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libvirt/src/libvirt.c
Osier Yang caef87d557 block_resize: Define the new API 
The new API is named as "virDomainBlockResize", intending to add
support for qemu monitor command "block_resize" (both HMP and QMP).

Similar with APIs like "virDomainSetMemoryFlags", the units for
argument "size" is kilobytes.
2011-11-29 21:40:43 +08:00

17416 lines
492 KiB
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/*
* libvirt.c: Main interfaces for the libvirt library to handle virtualization
* domains from a process running in domain 0
*
* Copyright (C) 2005-2006, 2008-2011 Red Hat, Inc.
*
* See COPYING.LIB for the License of this software
*
* Daniel Veillard <veillard@redhat.com>
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/wait.h>
#include <time.h>
#include <gcrypt.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <libxml/uri.h>
#include "getpass.h"
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#include "virterror_internal.h"
#include "logging.h"
#include "datatypes.h"
#include "driver.h"
#include "uuid.h"
#include "util.h"
#include "memory.h"
#include "configmake.h"
#include "intprops.h"
#include "conf.h"
#include "rpc/virnettlscontext.h"
#include "command.h"
#include "virnodesuspend.h"
#ifndef WITH_DRIVER_MODULES
# ifdef WITH_TEST
# include "test/test_driver.h"
# endif
# ifdef WITH_XEN
# include "xen/xen_driver.h"
# endif
# ifdef WITH_REMOTE
# include "remote/remote_driver.h"
# endif
# ifdef WITH_OPENVZ
# include "openvz/openvz_driver.h"
# endif
# ifdef WITH_VMWARE
# include "vmware/vmware_driver.h"
# endif
# ifdef WITH_PHYP
# include "phyp/phyp_driver.h"
# endif
# ifdef WITH_VBOX
# include "vbox/vbox_driver.h"
# endif
# ifdef WITH_ESX
# include "esx/esx_driver.h"
# endif
# ifdef WITH_HYPERV
# include "hyperv/hyperv_driver.h"
# endif
# ifdef WITH_XENAPI
# include "xenapi/xenapi_driver.h"
# endif
#endif
#define VIR_FROM_THIS VIR_FROM_NONE
/*
* TODO:
* - use lock to protect against concurrent accesses ?
* - use reference counting to guarantee coherent pointer state ?
*/
#define MAX_DRIVERS 20
static virDriverPtr virDriverTab[MAX_DRIVERS];
static int virDriverTabCount = 0;
static virNetworkDriverPtr virNetworkDriverTab[MAX_DRIVERS];
static int virNetworkDriverTabCount = 0;
static virInterfaceDriverPtr virInterfaceDriverTab[MAX_DRIVERS];
static int virInterfaceDriverTabCount = 0;
static virStorageDriverPtr virStorageDriverTab[MAX_DRIVERS];
static int virStorageDriverTabCount = 0;
static virDeviceMonitorPtr virDeviceMonitorTab[MAX_DRIVERS];
static int virDeviceMonitorTabCount = 0;
static virSecretDriverPtr virSecretDriverTab[MAX_DRIVERS];
static int virSecretDriverTabCount = 0;
static virNWFilterDriverPtr virNWFilterDriverTab[MAX_DRIVERS];
static int virNWFilterDriverTabCount = 0;
#ifdef WITH_LIBVIRTD
static virStateDriverPtr virStateDriverTab[MAX_DRIVERS];
static int virStateDriverTabCount = 0;
#endif
static int initialized = 0;
#if defined(POLKIT_AUTH)
static int virConnectAuthGainPolkit(const char *privilege) {
virCommandPtr cmd;
int status;
int ret = -1;
if (getuid() == 0)
return 0;
cmd = virCommandNewArgList(POLKIT_AUTH, "--obtain", privilege, NULL);
if (virCommandRun(cmd, &status) < 0 ||
status > 1)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
#endif
static int virConnectAuthCallbackDefault(virConnectCredentialPtr cred,
unsigned int ncred,
void *cbdata ATTRIBUTE_UNUSED) {
int i;
for (i = 0 ; i < ncred ; i++) {
char buf[1024];
char *bufptr = buf;
size_t len;
switch (cred[i].type) {
case VIR_CRED_EXTERNAL: {
if (STRNEQ(cred[i].challenge, "PolicyKit"))
return -1;
#if defined(POLKIT_AUTH)
if (virConnectAuthGainPolkit(cred[i].prompt) < 0)
return -1;
#else
/*
* Ignore & carry on. Although we can't auth
* directly, the user may have authenticated
* themselves already outside context of libvirt
*/
#endif
break;
}
case VIR_CRED_USERNAME:
case VIR_CRED_AUTHNAME:
case VIR_CRED_ECHOPROMPT:
case VIR_CRED_REALM:
if (printf("%s: ", cred[i].prompt) < 0)
return -1;
if (fflush(stdout) != 0)
return -1;
if (!fgets(buf, sizeof(buf), stdin)) {
if (feof(stdin)) { /* Treat EOF as "" */
buf[0] = '\0';
break;
}
return -1;
}
len = strlen(buf);
if (len != 0 && buf[len-1] == '\n')
buf[len-1] = '\0';
break;
case VIR_CRED_PASSPHRASE:
case VIR_CRED_NOECHOPROMPT:
if (printf("%s: ", cred[i].prompt) < 0)
return -1;
if (fflush(stdout) != 0)
return -1;
bufptr = getpass("");
if (!bufptr)
return -1;
break;
default:
return -1;
}
if (cred[i].type != VIR_CRED_EXTERNAL) {
if (STREQ(bufptr, "") && cred[i].defresult)
cred[i].result = strdup(cred[i].defresult);
else
cred[i].result = strdup(bufptr);
if (!cred[i].result)
return -1;
cred[i].resultlen = strlen(cred[i].result);
}
}
return 0;
}
/* Don't typically want VIR_CRED_USERNAME. It enables you to authenticate
* as one user, and act as another. It just results in annoying
* prompts for the username twice & is very rarely what you want
*/
static int virConnectCredTypeDefault[] = {
VIR_CRED_AUTHNAME,
VIR_CRED_ECHOPROMPT,
VIR_CRED_REALM,
VIR_CRED_PASSPHRASE,
VIR_CRED_NOECHOPROMPT,
VIR_CRED_EXTERNAL,
};
static virConnectAuth virConnectAuthDefault = {
virConnectCredTypeDefault,
sizeof(virConnectCredTypeDefault)/sizeof(int),
virConnectAuthCallbackDefault,
NULL,
};
/*
* virConnectAuthPtrDefault
*
* A default implementation of the authentication callbacks. This
* implementation is suitable for command line based tools. It will
* prompt for username, passwords, realm and one time keys as needed.
* It will print on STDOUT, and read from STDIN. If this is not
* suitable for the application's needs an alternative implementation
* should be provided.
*/
virConnectAuthPtr virConnectAuthPtrDefault = &virConnectAuthDefault;
#if HAVE_WINSOCK2_H
static int
winsock_init (void)
{
WORD winsock_version, err;
WSADATA winsock_data;
/* http://msdn2.microsoft.com/en-us/library/ms742213.aspx */
winsock_version = MAKEWORD (2, 2);
err = WSAStartup (winsock_version, &winsock_data);
return err == 0 ? 0 : -1;
}
#endif
static int virTLSMutexInit (void **priv)
{ \
virMutexPtr lock = NULL;
if (VIR_ALLOC(lock) < 0)
return ENOMEM;
if (virMutexInit(lock) < 0) {
VIR_FREE(lock);
return errno;
}
*priv = lock;
return 0;
}
static int virTLSMutexDestroy(void **priv)
{
virMutexPtr lock = *priv;
virMutexDestroy(lock);
VIR_FREE(lock);
return 0;
}
static int virTLSMutexLock(void **priv)
{
virMutexPtr lock = *priv;
virMutexLock(lock);
return 0;
}
static int virTLSMutexUnlock(void **priv)
{
virMutexPtr lock = *priv;
virMutexUnlock(lock);
return 0;
}
static struct gcry_thread_cbs virTLSThreadImpl = {
/* GCRY_THREAD_OPTION_VERSION was added in gcrypt 1.4.2 */
#ifdef GCRY_THREAD_OPTION_VERSION
(GCRY_THREAD_OPTION_PTHREAD | (GCRY_THREAD_OPTION_VERSION << 8)),
#else
GCRY_THREAD_OPTION_PTHREAD,
#endif
NULL,
virTLSMutexInit,
virTLSMutexDestroy,
virTLSMutexLock,
virTLSMutexUnlock,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
};
/* Helper macros to implement VIR_DOMAIN_DEBUG using just C99. This
* assumes you pass fewer than 15 arguments to VIR_DOMAIN_DEBUG, but
* can easily be expanded if needed.
*
* Note that gcc provides extensions of "define a(b...) b" or
* "define a(b,...) b,##__VA_ARGS__" as a means of eliding a comma
* when no var-args are present, but we don't want to require gcc.
*/
#define VIR_ARG15(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, ...) _15
#define VIR_HAS_COMMA(...) VIR_ARG15(__VA_ARGS__, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0)
/* Form the name VIR_DOMAIN_DEBUG_[01], then call that macro,
* according to how many arguments are present. Two-phase due to
* macro expansion rules. */
#define VIR_DOMAIN_DEBUG_EXPAND(a, b, ...) \
VIR_DOMAIN_DEBUG_PASTE(a, b, __VA_ARGS__)
#define VIR_DOMAIN_DEBUG_PASTE(a, b, ...) \
a##b(__VA_ARGS__)
/* Internal use only, when VIR_DOMAIN_DEBUG has one argument. */
#define VIR_DOMAIN_DEBUG_0(dom) \
VIR_DOMAIN_DEBUG_2(dom, "%s", "")
/* Internal use only, when VIR_DOMAIN_DEBUG has three or more arguments. */
#define VIR_DOMAIN_DEBUG_1(dom, fmt, ...) \
VIR_DOMAIN_DEBUG_2(dom, ", " fmt, __VA_ARGS__)
/* Internal use only, with final format. */
#define VIR_DOMAIN_DEBUG_2(dom, fmt, ...) \
do { \
char _uuidstr[VIR_UUID_STRING_BUFLEN]; \
const char *_domname = NULL; \
\
if (!VIR_IS_DOMAIN(dom)) { \
memset(_uuidstr, 0, sizeof(_uuidstr)); \
} else { \
virUUIDFormat((dom)->uuid, _uuidstr); \
_domname = (dom)->name; \
} \
\
VIR_DEBUG("dom=%p, (VM: name=%s, uuid=%s)" fmt, \
dom, NULLSTR(_domname), _uuidstr, __VA_ARGS__); \
} while (0)
/**
* VIR_DOMAIN_DEBUG:
* @dom: domain
* @fmt: optional format for additional information
* @...: optional arguments corresponding to @fmt.
*/
#define VIR_DOMAIN_DEBUG(...) \
VIR_DOMAIN_DEBUG_EXPAND(VIR_DOMAIN_DEBUG_, \
VIR_HAS_COMMA(__VA_ARGS__), \
__VA_ARGS__)
/**
* VIR_UUID_DEBUG:
* @conn: connection
* @uuid: possibly null UUID array
*/
#define VIR_UUID_DEBUG(conn, uuid) \
do { \
if (uuid) { \
char _uuidstr[VIR_UUID_STRING_BUFLEN]; \
virUUIDFormat(uuid, _uuidstr); \
VIR_DEBUG("conn=%p, uuid=%s", conn, _uuidstr); \
} else { \
VIR_DEBUG("conn=%p, uuid=(null)", conn); \
} \
} while (0)
/**
* virInitialize:
*
* Initialize the library. It's better to call this routine at startup
* in multithreaded applications to avoid potential race when initializing
* the library.
*
* Calling virInitialize is mandatory, unless your first API call is one of
* virConnectOpen*.
*
* Returns 0 in case of success, -1 in case of error
*/
int
virInitialize(void)
{
if (initialized)
return 0;
initialized = 1;
if (virThreadInitialize() < 0 ||
virErrorInitialize() < 0 ||
virRandomInitialize(time(NULL) ^ getpid()) ||
virNodeSuspendInit() < 0)
return -1;
gcry_control(GCRYCTL_SET_THREAD_CBS, &virTLSThreadImpl);
gcry_check_version(NULL);
virLogSetFromEnv();
virNetTLSInit();
VIR_DEBUG("register drivers");
#if HAVE_WINSOCK2_H
if (winsock_init () == -1) return -1;
#endif
if (!bindtextdomain(PACKAGE, LOCALEDIR))
return -1;
/*
* Note that the order is important: the first ones have a higher
* priority when calling virConnectOpen.
*/
#ifdef WITH_DRIVER_MODULES
/* We don't care if any of these fail, because the whole point
* is to allow users to only install modules they want to use.
* If they try to open a connection for a module that
* is not loaded they'll get a suitable error at that point
*/
# ifdef WITH_TEST
virDriverLoadModule("test");
# endif
# ifdef WITH_XEN
virDriverLoadModule("xen");
# endif
# ifdef WITH_OPENVZ
virDriverLoadModule("openvz");
# endif
# ifdef WITH_VMWARE
virDriverLoadModule("vmware");
# endif
# ifdef WITH_VBOX
virDriverLoadModule("vbox");
# endif
# ifdef WITH_ESX
virDriverLoadModule("esx");
# endif
# ifdef WITH_HYPERV
virDriverLoadModule("hyperv");
# endif
# ifdef WITH_XENAPI
virDriverLoadModule("xenapi");
# endif
# ifdef WITH_REMOTE
virDriverLoadModule("remote");
# endif
#else
# ifdef WITH_TEST
if (testRegister() == -1) return -1;
# endif
# ifdef WITH_XEN
if (xenRegister () == -1) return -1;
# endif
# ifdef WITH_OPENVZ
if (openvzRegister() == -1) return -1;
# endif
# ifdef WITH_VMWARE
if (vmwareRegister() == -1) return -1;
# endif
# ifdef WITH_PHYP
if (phypRegister() == -1) return -1;
# endif
# ifdef WITH_VBOX
if (vboxRegister() == -1) return -1;
# endif
# ifdef WITH_ESX
if (esxRegister() == -1) return -1;
# endif
# ifdef WITH_HYPERV
if (hypervRegister() == -1) return -1;
# endif
# ifdef WITH_XENAPI
if (xenapiRegister() == -1) return -1;
# endif
# ifdef WITH_REMOTE
if (remoteRegister () == -1) return -1;
# endif
#endif
return 0;
}
#ifdef WIN32
BOOL WINAPI
DllMain (HINSTANCE instance, DWORD reason, LPVOID ignore);
BOOL WINAPI
DllMain (HINSTANCE instance ATTRIBUTE_UNUSED,
DWORD reason,
LPVOID ignore ATTRIBUTE_UNUSED)
{
switch (reason) {
case DLL_PROCESS_ATTACH:
virInitialize();
break;
case DLL_THREAD_ATTACH:
/* Nothing todo in libvirt yet */
break;
case DLL_THREAD_DETACH:
/* Release per-thread local data */
virThreadOnExit();
break;
case DLL_PROCESS_DETACH:
/* Don't bother releasing per-thread data
since (hopefully) windows cleans up
everything on process exit */
break;
}
return TRUE;
}
#endif
#define virLibConnError(code, ...) \
virReportErrorHelper(VIR_FROM_NONE, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibDomainError(code, ...) \
virReportErrorHelper(VIR_FROM_DOM, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibNetworkError(code, ...) \
virReportErrorHelper(VIR_FROM_NETWORK, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibStoragePoolError(code, ...) \
virReportErrorHelper(VIR_FROM_STORAGE, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibStorageVolError(code, ...) \
virReportErrorHelper(VIR_FROM_STORAGE, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibInterfaceError(code, ...) \
virReportErrorHelper(VIR_FROM_INTERFACE, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibNodeDeviceError(code, ...) \
virReportErrorHelper(VIR_FROM_NODEDEV, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibSecretError(code, ...) \
virReportErrorHelper(VIR_FROM_SECRET, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibStreamError(code, ...) \
virReportErrorHelper(VIR_FROM_STREAMS, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibNWFilterError(code, ...) \
virReportErrorHelper(VIR_FROM_NWFILTER, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#define virLibDomainSnapshotError(code, ...) \
virReportErrorHelper(VIR_FROM_DOMAIN_SNAPSHOT, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
/**
* virRegisterNetworkDriver:
* @driver: pointer to a network driver block
*
* Register a network virtualization driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterNetworkDriver(virNetworkDriverPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virNetworkDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
VIR_DEBUG ("registering %s as network driver %d",
driver->name, virNetworkDriverTabCount);
virNetworkDriverTab[virNetworkDriverTabCount] = driver;
return virNetworkDriverTabCount++;
}
/**
* virRegisterInterfaceDriver:
* @driver: pointer to an interface driver block
*
* Register an interface virtualization driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterInterfaceDriver(virInterfaceDriverPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virInterfaceDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
VIR_DEBUG ("registering %s as interface driver %d",
driver->name, virInterfaceDriverTabCount);
virInterfaceDriverTab[virInterfaceDriverTabCount] = driver;
return virInterfaceDriverTabCount++;
}
/**
* virRegisterStorageDriver:
* @driver: pointer to a storage driver block
*
* Register a storage virtualization driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterStorageDriver(virStorageDriverPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virStorageDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
VIR_DEBUG ("registering %s as storage driver %d",
driver->name, virStorageDriverTabCount);
virStorageDriverTab[virStorageDriverTabCount] = driver;
return virStorageDriverTabCount++;
}
/**
* virRegisterDeviceMonitor:
* @driver: pointer to a device monitor block
*
* Register a device monitor
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterDeviceMonitor(virDeviceMonitorPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virDeviceMonitorTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
VIR_DEBUG ("registering %s as device driver %d",
driver->name, virDeviceMonitorTabCount);
virDeviceMonitorTab[virDeviceMonitorTabCount] = driver;
return virDeviceMonitorTabCount++;
}
/**
* virRegisterSecretDriver:
* @driver: pointer to a secret driver block
*
* Register a secret driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterSecretDriver(virSecretDriverPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virSecretDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
VIR_DEBUG ("registering %s as secret driver %d",
driver->name, virSecretDriverTabCount);
virSecretDriverTab[virSecretDriverTabCount] = driver;
return virSecretDriverTabCount++;
}
/**
* virRegisterNWFilterDriver:
* @driver: pointer to a network filter driver block
*
* Register a network filter virtualization driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterNWFilterDriver(virNWFilterDriverPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virNWFilterDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
VIR_DEBUG ("registering %s as network filter driver %d",
driver->name, virNWFilterDriverTabCount);
virNWFilterDriverTab[virNWFilterDriverTabCount] = driver;
return virNWFilterDriverTabCount++;
}
/**
* virRegisterDriver:
* @driver: pointer to a driver block
*
* Register a virtualization driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterDriver(virDriverPtr driver)
{
VIR_DEBUG("driver=%p name=%s", driver, driver ? NULLSTR(driver->name) : "(null)");
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
if (driver->no < 0) {
virLibConnError(VIR_ERR_INVALID_ARG,
_("Tried to register an internal Xen driver"));
return -1;
}
VIR_DEBUG ("registering %s as driver %d",
driver->name, virDriverTabCount);
virDriverTab[virDriverTabCount] = driver;
return virDriverTabCount++;
}
#ifdef WITH_LIBVIRTD
/**
* virRegisterStateDriver:
* @driver: pointer to a driver block
*
* Register a virtualization driver
*
* Returns the driver priority or -1 in case of error.
*/
int
virRegisterStateDriver(virStateDriverPtr driver)
{
if (virInitialize() < 0)
return -1;
if (driver == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (virStateDriverTabCount >= MAX_DRIVERS) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("Too many drivers, cannot register %s"),
driver->name);
return -1;
}
virStateDriverTab[virStateDriverTabCount] = driver;
return virStateDriverTabCount++;
}
/**
* virStateInitialize:
* @privileged: set to 1 if running with root privilege, 0 otherwise
*
* Initialize all virtualization drivers.
*
* Returns 0 if all succeed, -1 upon any failure.
*/
int virStateInitialize(int privileged) {
int i, ret = 0;
if (virInitialize() < 0)
return -1;
for (i = 0 ; i < virStateDriverTabCount ; i++) {
if (virStateDriverTab[i]->initialize &&
virStateDriverTab[i]->initialize(privileged) < 0) {
VIR_ERROR(_("Initialization of %s state driver failed"),
virStateDriverTab[i]->name);
ret = -1;
}
}
return ret;
}
/**
* virStateCleanup:
*
* Run each virtualization driver's cleanup method.
*
* Returns 0 if all succeed, -1 upon any failure.
*/
int virStateCleanup(void) {
int i, ret = 0;
for (i = 0 ; i < virStateDriverTabCount ; i++) {
if (virStateDriverTab[i]->cleanup &&
virStateDriverTab[i]->cleanup() < 0)
ret = -1;
}
return ret;
}
/**
* virStateReload:
*
* Run each virtualization driver's reload method.
*
* Returns 0 if all succeed, -1 upon any failure.
*/
int virStateReload(void) {
int i, ret = 0;
for (i = 0 ; i < virStateDriverTabCount ; i++) {
if (virStateDriverTab[i]->reload &&
virStateDriverTab[i]->reload() < 0)
ret = -1;
}
return ret;
}
/**
* virStateActive:
*
* Run each virtualization driver's "active" method.
*
* Returns 0 if none are active, 1 if at least one is.
*/
int virStateActive(void) {
int i, ret = 0;
for (i = 0 ; i < virStateDriverTabCount ; i++) {
if (virStateDriverTab[i]->active &&
virStateDriverTab[i]->active())
ret = 1;
}
return ret;
}
#endif
/**
* virGetVersion:
* @libVer: return value for the library version (OUT)
* @type: ignored; pass NULL
* @typeVer: pass NULL; for historical purposes duplicates @libVer if
* non-NULL
*
* Provides version information. @libVer is the version of the
* library and will always be set unless an error occurs, in which case
* an error code will be returned. @typeVer exists for historical
* compatibility; if it is not NULL it will duplicate @libVer (it was
* originally intended to return hypervisor information based on @type,
* but due to the design of remote clients this is not reliable). To
* get the version of the running hypervisor use the virConnectGetVersion
* function instead. To get the libvirt library version used by a
* connection use the virConnectGetLibVersion instead.
*
* Returns -1 in case of failure, 0 otherwise, and values for @libVer and
* @typeVer have the format major * 1,000,000 + minor * 1,000 + release.
*/
int
virGetVersion(unsigned long *libVer, const char *type ATTRIBUTE_UNUSED,
unsigned long *typeVer)
{
VIR_DEBUG("libVir=%p, type=%s, typeVer=%p", libVer, type, typeVer);
if (!initialized)
if (virInitialize() < 0)
goto error;
if (libVer == NULL)
goto error;
*libVer = LIBVIR_VERSION_NUMBER;
if (typeVer != NULL)
*typeVer = LIBVIR_VERSION_NUMBER;
return 0;
error:
virDispatchError(NULL);
return -1;
}
static char *
virConnectConfigFile(void)
{
char *path;
if (geteuid() == 0) {
if (virAsprintf(&path, "%s/libvirt/libvirt.conf",
SYSCONFDIR) < 0)
goto no_memory;
} else {
char *userdir = virGetUserDirectory(geteuid());
if (!userdir)
goto error;
if (virAsprintf(&path, "%s/.libvirt/libvirt.conf",
userdir) < 0)
goto no_memory;
}
return path;
no_memory:
virReportOOMError();
error:
return NULL;
}
#define URI_ALIAS_CHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-"
static int
virConnectOpenFindURIAliasMatch(virConfValuePtr value, const char *alias, char **uri)
{
virConfValuePtr entry;
size_t alias_len;
if (value->type != VIR_CONF_LIST) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Expected a list for 'uri_aliases' config parameter"));
return -1;
}
entry = value->list;
alias_len = strlen(alias);
while (entry) {
char *offset;
size_t safe;
if (entry->type != VIR_CONF_STRING) {
virLibConnError(VIR_ERR_CONF_SYNTAX, "%s",
_("Expected a string for 'uri_aliases' config parameter list entry"));
return -1;
}
if (!(offset = strchr(entry->str, '='))) {
virLibConnError(VIR_ERR_CONF_SYNTAX,
_("Malformed 'uri_aliases' config entry '%s', expected 'alias=uri://host/path'"),
entry->str);
return -1;
}
safe = strspn(entry->str, URI_ALIAS_CHARS);
if (safe < (offset - entry->str)) {
virLibConnError(VIR_ERR_CONF_SYNTAX,
_("Malformed 'uri_aliases' config entry '%s', aliases may only container 'a-Z, 0-9, _, -'"),
entry->str);
return -1;
}
if (alias_len == (offset - entry->str) &&
STREQLEN(entry->str, alias, alias_len)) {
VIR_DEBUG("Resolved alias '%s' to '%s'",
alias, offset+1);
if (!(*uri = strdup(offset+1))) {
virReportOOMError();
return -1;
}
return 0;
}
entry = entry->next;
}
VIR_DEBUG("No alias found for '%s', passing through to drivers",
alias);
return 0;
}
static int
virConnectOpenResolveURIAlias(const char *alias, char **uri)
{
char *config = NULL;
int ret = -1;
virConfPtr conf = NULL;
virConfValuePtr value = NULL;
*uri = NULL;
if (!(config = virConnectConfigFile()))
goto cleanup;
if (!virFileExists(config)) {
ret = 0;
goto cleanup;
}
VIR_DEBUG("Loading config file '%s'", config);
if (!(conf = virConfReadFile(config, 0)))
goto cleanup;
if ((value = virConfGetValue(conf, "uri_aliases")))
ret = virConnectOpenFindURIAliasMatch(value, alias, uri);
else
ret = 0;
cleanup:
virConfFree(conf);
VIR_FREE(config);
return ret;
}
static virConnectPtr
do_open (const char *name,
virConnectAuthPtr auth,
unsigned int flags)
{
int i, res;
virConnectPtr ret;
virResetLastError();
ret = virGetConnect();
if (ret == NULL)
return NULL;
/*
* If no URI is passed, then check for an environment string if not
* available probe the compiled in drivers to find a default hypervisor
* if detectable.
*/
if (!name || name[0] == '\0') {
char *defname = getenv("LIBVIRT_DEFAULT_URI");
if (defname && *defname) {
VIR_DEBUG("Using LIBVIRT_DEFAULT_URI %s", defname);
name = defname;
} else {
name = NULL;
}
}
if (name) {
char *alias = NULL;
/* Convert xen -> xen:/// for back compat */
if (STRCASEEQ(name, "xen"))
name = "xen:///";
/* Convert xen:// -> xen:/// because xmlParseURI cannot parse the
* former. This allows URIs such as xen://localhost to work.
*/
if (STREQ (name, "xen://"))
name = "xen:///";
if (!(flags & VIR_CONNECT_NO_ALIASES) &&
virConnectOpenResolveURIAlias(name, &alias) < 0)
goto failed;
ret->uri = xmlParseURI (alias ? alias : name);
if (!ret->uri) {
virLibConnError(VIR_ERR_INVALID_ARG,
_("could not parse connection URI %s"),
alias ? alias : name);
VIR_FREE(alias);
goto failed;
}
VIR_DEBUG("name \"%s\" to URI components:\n"
" scheme %s\n"
" opaque %s\n"
" authority %s\n"
" server %s\n"
" user %s\n"
" port %d\n"
" path %s\n",
alias ? alias : name,
NULLSTR(ret->uri->scheme), NULLSTR(ret->uri->opaque),
NULLSTR(ret->uri->authority), NULLSTR(ret->uri->server),
NULLSTR(ret->uri->user), ret->uri->port,
NULLSTR(ret->uri->path));
VIR_FREE(alias);
} else {
VIR_DEBUG("no name, allowing driver auto-select");
}
/* Cleansing flags */
ret->flags = flags & VIR_CONNECT_RO;
for (i = 0; i < virDriverTabCount; i++) {
/* We're going to probe the remote driver next. So we have already
* probed all other client-side-only driver before, but none of them
* accepted the URI.
* If the scheme corresponds to a known but disabled client-side-only
* driver then report a useful error, instead of a cryptic one about
* not being able to connect to libvirtd or not being able to find
* certificates. */
if (virDriverTab[i]->no == VIR_DRV_REMOTE &&
ret->uri != NULL && ret->uri->scheme != NULL &&
(
#ifndef WITH_PHYP
STRCASEEQ(ret->uri->scheme, "phyp") ||
#endif
#ifndef WITH_ESX
STRCASEEQ(ret->uri->scheme, "vpx") ||
STRCASEEQ(ret->uri->scheme, "esx") ||
STRCASEEQ(ret->uri->scheme, "gsx") ||
#endif
#ifndef WITH_HYPERV
STRCASEEQ(ret->uri->scheme, "hyperv") ||
#endif
#ifndef WITH_XENAPI
STRCASEEQ(ret->uri->scheme, "xenapi") ||
#endif
false)) {
virReportErrorHelper(VIR_FROM_NONE, VIR_ERR_INVALID_ARG,
__FILE__, __FUNCTION__, __LINE__,
_("libvirt was built without the '%s' driver"),
ret->uri->scheme);
goto failed;
}
VIR_DEBUG("trying driver %d (%s) ...",
i, virDriverTab[i]->name);
res = virDriverTab[i]->open (ret, auth, flags);
VIR_DEBUG("driver %d %s returned %s",
i, virDriverTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) goto failed;
else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->driver = virDriverTab[i];
break;
}
}
if (!ret->driver) {
/* If we reach here, then all drivers declined the connection. */
virLibConnError(VIR_ERR_NO_CONNECT,
_("No connection for URI %s"),
NULLSTR(name));
goto failed;
}
for (i = 0; i < virNetworkDriverTabCount; i++) {
res = virNetworkDriverTab[i]->open (ret, auth, flags);
VIR_DEBUG("network driver %d %s returned %s",
i, virNetworkDriverTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) {
break;
} else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->networkDriver = virNetworkDriverTab[i];
break;
}
}
for (i = 0; i < virInterfaceDriverTabCount; i++) {
res = virInterfaceDriverTab[i]->open (ret, auth, flags);
VIR_DEBUG("interface driver %d %s returned %s",
i, virInterfaceDriverTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) {
break;
} else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->interfaceDriver = virInterfaceDriverTab[i];
break;
}
}
/* Secondary driver for storage. Optional */
for (i = 0; i < virStorageDriverTabCount; i++) {
res = virStorageDriverTab[i]->open (ret, auth, flags);
VIR_DEBUG("storage driver %d %s returned %s",
i, virStorageDriverTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) {
break;
} else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->storageDriver = virStorageDriverTab[i];
break;
}
}
/* Node driver (optional) */
for (i = 0; i < virDeviceMonitorTabCount; i++) {
res = virDeviceMonitorTab[i]->open (ret, auth, flags);
VIR_DEBUG("node driver %d %s returned %s",
i, virDeviceMonitorTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) {
break;
} else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->deviceMonitor = virDeviceMonitorTab[i];
break;
}
}
/* Secret manipulation driver. Optional */
for (i = 0; i < virSecretDriverTabCount; i++) {
res = virSecretDriverTab[i]->open (ret, auth, flags);
VIR_DEBUG("secret driver %d %s returned %s",
i, virSecretDriverTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) {
break;
} else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->secretDriver = virSecretDriverTab[i];
break;
}
}
/* Network filter driver. Optional */
for (i = 0; i < virNWFilterDriverTabCount; i++) {
res = virNWFilterDriverTab[i]->open (ret, auth, flags);
VIR_DEBUG("nwfilter driver %d %s returned %s",
i, virNWFilterDriverTab[i]->name,
res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
(res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
(res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
if (res == VIR_DRV_OPEN_ERROR) {
break;
} else if (res == VIR_DRV_OPEN_SUCCESS) {
ret->nwfilterDriver = virNWFilterDriverTab[i];
break;
}
}
return ret;
failed:
virUnrefConnect(ret);
return NULL;
}
/**
* virConnectOpen:
* @name: URI of the hypervisor
*
* This function should be called first to get a connection to the
* Hypervisor and xen store
*
* Returns a pointer to the hypervisor connection or NULL in case of error
*
* If @name is NULL then probing will be done to determine a suitable
* default driver to activate. This involves trying each hypervisor
* in turn until one successfully opens. If the LIBVIRT_DEFAULT_URI
* environment variable is set, then it will be used in preference
* to probing for a driver.
*
* If connecting to an unprivileged hypervisor driver which requires
* the libvirtd daemon to be active, it will automatically be launched
* if not already running. This can be prevented by setting the
* environment variable LIBVIRT_AUTOSTART=0
*
* URIs are documented at http://libvirt.org/uri.html
*/
virConnectPtr
virConnectOpen (const char *name)
{
virConnectPtr ret = NULL;
if (!initialized)
if (virInitialize() < 0)
goto error;
VIR_DEBUG("name=%s", name);
ret = do_open (name, NULL, 0);
if (!ret)
goto error;
return ret;
error:
virDispatchError(NULL);
return NULL;
}
/**
* virConnectOpenReadOnly:
* @name: URI of the hypervisor
*
* This function should be called first to get a restricted connection to the
* library functionalities. The set of APIs usable are then restricted
* on the available methods to control the domains.
*
* See virConnectOpen for notes about environment variables which can
* have an effect on opening drivers
*
* Returns a pointer to the hypervisor connection or NULL in case of error
*
* URIs are documented at http://libvirt.org/uri.html
*/
virConnectPtr
virConnectOpenReadOnly(const char *name)
{
virConnectPtr ret = NULL;
if (!initialized)
if (virInitialize() < 0)
goto error;
VIR_DEBUG("name=%s", name);
ret = do_open (name, NULL, VIR_CONNECT_RO);
if (!ret)
goto error;
return ret;
error:
virDispatchError(NULL);
return NULL;
}
/**
* virConnectOpenAuth:
* @name: URI of the hypervisor
* @auth: Authenticate callback parameters
* @flags: Open flags
*
* This function should be called first to get a connection to the
* Hypervisor. If necessary, authentication will be performed fetching
* credentials via the callback
*
* See virConnectOpen for notes about environment variables which can
* have an effect on opening drivers
*
* Returns a pointer to the hypervisor connection or NULL in case of error
*
* URIs are documented at http://libvirt.org/uri.html
*/
virConnectPtr
virConnectOpenAuth(const char *name,
virConnectAuthPtr auth,
unsigned int flags)
{
virConnectPtr ret = NULL;
if (!initialized)
if (virInitialize() < 0)
goto error;
VIR_DEBUG("name=%s, auth=%p, flags=%x", NULLSTR(name), auth, flags);
ret = do_open (name, auth, flags);
if (!ret)
goto error;
return ret;
error:
virDispatchError(NULL);
return NULL;
}
/**
* virConnectClose:
* @conn: pointer to the hypervisor connection
*
* This function closes the connection to the Hypervisor. This should
* not be called if further interaction with the Hypervisor are needed
* especially if there is running domain which need further monitoring by
* the application.
*
* Connections are reference counted; the count is explicitly
* increased by the initial open (virConnectOpen, virConnectOpenAuth,
* and the like) as well as virConnectRef; it is also temporarily
* increased by other API that depend on the connection remaining
* alive. The open and every virConnectRef call should have a
* matching virConnectClose, and all other references will be released
* after the corresponding operation completes.
*
* Returns the number of remaining references on success
* (positive implies that some other call still has a reference open,
* 0 implies that no references remain and the connection is closed),
* or -1 on failure. It is possible for the last virConnectClose to
* return a positive value if some other object still has a temporary
* reference to the connection, but the application should not try to
* further use a connection after the virConnectClose that matches the
* initial open.
*/
int
virConnectClose(virConnectPtr conn)
{
int ret = -1;
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
goto error;
}
ret = virUnrefConnect(conn);
if (ret < 0)
goto error;
return ret;
error:
virDispatchError(NULL);
return ret;
}
/**
* virConnectRef:
* @conn: the connection to hold a reference on
*
* Increment the reference count on the connection. For each
* additional call to this method, there shall be a corresponding
* call to virConnectClose to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using a connection would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure
*/
int
virConnectRef(virConnectPtr conn)
{
if ((!VIR_IS_CONNECT(conn))) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&conn->lock);
VIR_DEBUG("conn=%p refs=%d", conn, conn->refs);
conn->refs++;
virMutexUnlock(&conn->lock);
return 0;
}
/*
* Not for public use. This function is part of the internal
* implementation of driver features in the remote case.
*/
int
virDrvSupportsFeature (virConnectPtr conn, int feature)
{
int ret;
VIR_DEBUG("conn=%p, feature=%d", conn, feature);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!conn->driver->supports_feature)
ret = 0;
else
ret = conn->driver->supports_feature(conn, feature);
if (ret < 0)
virDispatchError(conn);
return ret;
}
/**
* virConnectGetType:
* @conn: pointer to the hypervisor connection
*
* Get the name of the Hypervisor software used.
*
* Returns NULL in case of error, a static zero terminated string otherwise.
*
* See also:
* http://www.redhat.com/archives/libvir-list/2007-February/msg00096.html
*/
const char *
virConnectGetType(virConnectPtr conn)
{
const char *ret;
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->driver->type) {
ret = conn->driver->type (conn);
if (ret) return ret;
}
return conn->driver->name;
}
/**
* virConnectGetVersion:
* @conn: pointer to the hypervisor connection
* @hvVer: return value for the version of the running hypervisor (OUT)
*
* Get the version level of the Hypervisor running. This may work only with
* hypervisor call, i.e. with privileged access to the hypervisor, not
* with a Read-Only connection.
*
* Returns -1 in case of error, 0 otherwise. if the version can't be
* extracted by lack of capacities returns 0 and @hvVer is 0, otherwise
* @hvVer value is major * 1,000,000 + minor * 1,000 + release
*/
int
virConnectGetVersion(virConnectPtr conn, unsigned long *hvVer)
{
VIR_DEBUG("conn=%p, hvVer=%p", conn, hvVer);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (hvVer == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->version) {
int ret = conn->driver->version (conn, hvVer);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectGetLibVersion:
* @conn: pointer to the hypervisor connection
* @libVer: returns the libvirt library version used on the connection (OUT)
*
* Provides @libVer, which is the version of libvirt used by the
* daemon running on the @conn host
*
* Returns -1 in case of failure, 0 otherwise, and values for @libVer have
* the format major * 1,000,000 + minor * 1,000 + release.
*/
int
virConnectGetLibVersion(virConnectPtr conn, unsigned long *libVer)
{
int ret = -1;
VIR_DEBUG("conn=%p, libVir=%p", conn, libVer);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (libVer == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->libvirtVersion) {
ret = conn->driver->libvirtVersion(conn, libVer);
if (ret < 0)
goto error;
return ret;
}
*libVer = LIBVIR_VERSION_NUMBER;
return 0;
error:
virDispatchError(conn);
return ret;
}
/**
* virConnectGetHostname:
* @conn: pointer to a hypervisor connection
*
* This returns the system hostname on which the hypervisor is
* running (the result of the gethostname system call). If
* we are connected to a remote system, then this returns the
* hostname of the remote system.
*
* Returns the hostname which must be freed by the caller, or
* NULL if there was an error.
*/
char *
virConnectGetHostname (virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->driver->getHostname) {
char *ret = conn->driver->getHostname (conn);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virConnectGetURI:
* @conn: pointer to a hypervisor connection
*
* This returns the URI (name) of the hypervisor connection.
* Normally this is the same as or similar to the string passed
* to the virConnectOpen/virConnectOpenReadOnly call, but
* the driver may make the URI canonical. If name == NULL
* was passed to virConnectOpen, then the driver will return
* a non-NULL URI which can be used to connect to the same
* hypervisor later.
*
* Returns the URI string which must be freed by the caller, or
* NULL if there was an error.
*/
char *
virConnectGetURI (virConnectPtr conn)
{
char *name;
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
name = (char *)xmlSaveUri(conn->uri);
if (!name) {
virReportOOMError();
goto error;
}
return name;
error:
virDispatchError(conn);
return NULL;
}
/**
* virConnectGetSysinfo:
* @conn: pointer to a hypervisor connection
* @flags: callers should always pass 0
*
* This returns the XML description of the sysinfo details for the
* host on which the hypervisor is running, in the same format as the
* <sysinfo> element of a domain XML. This information is generally
* available only for hypervisors running with root privileges.
*
* Returns the XML string which must be freed by the caller, or
* NULL if there was an error.
*/
char *
virConnectGetSysinfo (virConnectPtr conn, unsigned int flags)
{
VIR_DEBUG("conn=%p, flags=%x", conn, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->driver->getSysinfo) {
char *ret = conn->driver->getSysinfo (conn, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virConnectGetMaxVcpus:
* @conn: pointer to the hypervisor connection
* @type: value of the 'type' attribute in the <domain> element
*
* Provides the maximum number of virtual CPUs supported for a guest VM of a
* specific type. The 'type' parameter here corresponds to the 'type'
* attribute in the <domain> element of the XML.
*
* Returns the maximum of virtual CPU or -1 in case of error.
*/
int
virConnectGetMaxVcpus(virConnectPtr conn,
const char *type)
{
VIR_DEBUG("conn=%p, type=%s", conn, type);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->driver->getMaxVcpus) {
int ret = conn->driver->getMaxVcpus (conn, type);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListDomains:
* @conn: pointer to the hypervisor connection
* @ids: array to collect the list of IDs of active domains
* @maxids: size of @ids
*
* Collect the list of active domains, and store their ID in @maxids
*
* Returns the number of domain found or -1 in case of error
*/
int
virConnectListDomains(virConnectPtr conn, int *ids, int maxids)
{
VIR_DEBUG("conn=%p, ids=%p, maxids=%d", conn, ids, maxids);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((ids == NULL) || (maxids < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->listDomains) {
int ret = conn->driver->listDomains (conn, ids, maxids);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectNumOfDomains:
* @conn: pointer to the hypervisor connection
*
* Provides the number of active domains.
*
* Returns the number of domain found or -1 in case of error
*/
int
virConnectNumOfDomains(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->driver->numOfDomains) {
int ret = conn->driver->numOfDomains (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainGetConnect:
* @dom: pointer to a domain
*
* Provides the connection pointer associated with a domain. The
* reference counter on the connection is not increased by this
* call.
*
* WARNING: When writing libvirt bindings in other languages, do
* not use this function. Instead, store the connection and
* the domain object together.
*
* Returns the virConnectPtr or NULL in case of failure.
*/
virConnectPtr
virDomainGetConnect (virDomainPtr dom)
{
VIR_DOMAIN_DEBUG(dom);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return dom->conn;
}
/**
* virDomainCreateXML:
* @conn: pointer to the hypervisor connection
* @xmlDesc: string containing an XML description of the domain
* @flags: bitwise-or of supported virDomainCreateFlags
*
* Launch a new guest domain, based on an XML description similar
* to the one returned by virDomainGetXMLDesc()
* This function may require privileged access to the hypervisor.
* The domain is not persistent, so its definition will disappear when it
* is destroyed, or if the host is restarted (see virDomainDefineXML() to
* define persistent domains).
*
* If the VIR_DOMAIN_START_PAUSED flag is set, the guest domain
* will be started, but its CPUs will remain paused. The CPUs
* can later be manually started using virDomainResume.
*
* If the VIR_DOMAIN_START_AUTODESTROY flag is set, the guest
* domain will be automatically destroyed when the virConnectPtr
* object is finally released. This will also happen if the
* client application crashes / loses its connection to the
* libvirtd daemon. Any domains marked for auto destroy will
* block attempts at migration, save-to-file, or snapshots.
*
* Returns a new domain object or NULL in case of failure
*/
virDomainPtr
virDomainCreateXML(virConnectPtr conn, const char *xmlDesc,
unsigned int flags)
{
VIR_DEBUG("conn=%p, xmlDesc=%s, flags=%x", conn, xmlDesc, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (xmlDesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainCreateXML) {
virDomainPtr ret;
ret = conn->driver->domainCreateXML (conn, xmlDesc, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainCreateLinux:
* @conn: pointer to the hypervisor connection
* @xmlDesc: string containing an XML description of the domain
* @flags: callers should always pass 0
*
* Deprecated after 0.4.6.
* Renamed to virDomainCreateXML() providing identical functionality.
* This existing name will left indefinitely for API compatibility.
*
* Returns a new domain object or NULL in case of failure
*/
virDomainPtr
virDomainCreateLinux(virConnectPtr conn, const char *xmlDesc,
unsigned int flags)
{
return virDomainCreateXML(conn, xmlDesc, flags);
}
/**
* virDomainLookupByID:
* @conn: pointer to the hypervisor connection
* @id: the domain ID number
*
* Try to find a domain based on the hypervisor ID number
* Note that this won't work for inactive domains which have an ID of -1,
* in that case a lookup based on the Name or UUId need to be done instead.
*
* Returns a new domain object or NULL in case of failure. If the
* domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.
*/
virDomainPtr
virDomainLookupByID(virConnectPtr conn, int id)
{
VIR_DEBUG("conn=%p, id=%d", conn, id);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (id < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainLookupByID) {
virDomainPtr ret;
ret = conn->driver->domainLookupByID (conn, id);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainLookupByUUID:
* @conn: pointer to the hypervisor connection
* @uuid: the raw UUID for the domain
*
* Try to lookup a domain on the given hypervisor based on its UUID.
*
* Returns a new domain object or NULL in case of failure. If the
* domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.
*/
virDomainPtr
virDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
{
VIR_UUID_DEBUG(conn, uuid);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuid == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainLookupByUUID) {
virDomainPtr ret;
ret = conn->driver->domainLookupByUUID (conn, uuid);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainLookupByUUIDString:
* @conn: pointer to the hypervisor connection
* @uuidstr: the string UUID for the domain
*
* Try to lookup a domain on the given hypervisor based on its UUID.
*
* Returns a new domain object or NULL in case of failure. If the
* domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.
*/
virDomainPtr
virDomainLookupByUUIDString(virConnectPtr conn, const char *uuidstr)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("conn=%p, uuidstr=%s", conn, NULLSTR(uuidstr));
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuidstr == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virUUIDParse(uuidstr, uuid) < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
return virDomainLookupByUUID(conn, &uuid[0]);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the domain
*
* Try to lookup a domain on the given hypervisor based on its name.
*
* Returns a new domain object or NULL in case of failure. If the
* domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.
*/
virDomainPtr
virDomainLookupByName(virConnectPtr conn, const char *name)
{
VIR_DEBUG("conn=%p, name=%s", conn, name);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainLookupByName) {
virDomainPtr dom;
dom = conn->driver->domainLookupByName (conn, name);
if (!dom)
goto error;
return dom;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainDestroy:
* @domain: a domain object
*
* Destroy the domain object. The running instance is shutdown if not down
* already and all resources used by it are given back to the hypervisor. This
* does not free the associated virDomainPtr object.
* This function may require privileged access
*
* If the domain is transient and has any snapshot metadata (see
* virDomainSnapshotNum()), then that metadata will automatically
* be deleted when the domain quits.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainDestroy(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainDestroy) {
int ret;
ret = conn->driver->domainDestroy (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainDestroyFlags:
* @domain: a domain object
* @flags: an OR'ed set of virDomainDestroyFlagsValues
*
* Destroy the domain object. The running instance is shutdown if not down
* already and all resources used by it are given back to the hypervisor.
* This does not free the associated virDomainPtr object.
* This function may require privileged access.
*
* Calling this function with no @flags set (equal to zero)
* is equivalent to calling virDomainDestroy. Using virDomainShutdown()
* may produce cleaner results for the guest's disks, but depends on guest
* support.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainDestroyFlags(virDomainPtr domain,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainDestroyFlags) {
int ret;
ret = conn->driver->domainDestroyFlags(domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainFree:
* @domain: a domain object
*
* Free the domain object. The running instance is kept alive.
* The data structure is freed and should not be used thereafter.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainFree(virDomainPtr domain)
{
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefDomain(domain) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virDomainRef:
* @domain: the domain to hold a reference on
*
* Increment the reference count on the domain. For each
* additional call to this method, there shall be a corresponding
* call to virDomainFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using a domain would increment
* the reference count.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainRef(virDomainPtr domain)
{
if ((!VIR_IS_CONNECTED_DOMAIN(domain))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&domain->conn->lock);
VIR_DOMAIN_DEBUG(domain, "refs=%d", domain->refs);
domain->refs++;
virMutexUnlock(&domain->conn->lock);
return 0;
}
/**
* virDomainSuspend:
* @domain: a domain object
*
* Suspends an active domain, the process is frozen without further access
* to CPU resources and I/O but the memory used by the domain at the
* hypervisor level will stay allocated. Use virDomainResume() to reactivate
* the domain.
* This function may require privileged access.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSuspend(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSuspend) {
int ret;
ret = conn->driver->domainSuspend (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainResume:
* @domain: a domain object
*
* Resume a suspended domain, the process is restarted from the state where
* it was frozen by calling virSuspendDomain().
* This function may require privileged access
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainResume(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainResume) {
int ret;
ret = conn->driver->domainResume (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSave:
* @domain: a domain object
* @to: path for the output file
*
* This method will suspend a domain and save its memory contents to
* a file on disk. After the call, if successful, the domain is not
* listed as running anymore (this ends the life of a transient domain).
* Use virDomainRestore() to restore a domain after saving.
*
* See virDomainSaveFlags() for more control. Also, a save file can
* be inspected or modified slightly with virDomainSaveImageGetXMLDesc()
* and virDomainSaveImageDefineXML().
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSave(virDomainPtr domain, const char *to)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "to=%s", to);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (to == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainSave) {
int ret;
char *absolute_to;
/* We must absolutize the file path as the save is done out of process */
if (virFileAbsPath(to, &absolute_to) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute output file path"));
goto error;
}
ret = conn->driver->domainSave(domain, absolute_to);
VIR_FREE(absolute_to);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSaveFlags:
* @domain: a domain object
* @to: path for the output file
* @dxml: (optional) XML config for adjusting guest xml used on restore
* @flags: bitwise-OR of virDomainSaveRestoreFlags
*
* This method will suspend a domain and save its memory contents to
* a file on disk. After the call, if successful, the domain is not
* listed as running anymore (this ends the life of a transient domain).
* Use virDomainRestore() to restore a domain after saving.
*
* If the hypervisor supports it, @dxml can be used to alter
* host-specific portions of the domain XML that will be used when
* restoring an image. For example, it is possible to alter the
* backing filename that is associated with a disk device, in order to
* prepare for file renaming done as part of backing up the disk
* device while the domain is stopped.
*
* If @flags includes VIR_DOMAIN_SAVE_BYPASS_CACHE, then libvirt will
* attempt to bypass the file system cache while creating the file, or
* fail if it cannot do so for the given system; this can allow less
* pressure on file system cache, but also risks slowing saves to NFS.
*
* Normally, the saved state file will remember whether the domain was
* running or paused, and restore defaults to the same state.
* Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in
* @flags will override what state gets saved into the file. These
* two flags are mutually exclusive.
*
* A save file can be inspected or modified slightly with
* virDomainSaveImageGetXMLDesc() and virDomainSaveImageDefineXML().
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSaveFlags(virDomainPtr domain, const char *to,
const char *dxml, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "to=%s, dxml=%s, flags=%x",
to, NULLSTR(dxml), flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (to == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SAVE_RUNNING) && (flags & VIR_DOMAIN_SAVE_PAUSED)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("running and paused flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainSaveFlags) {
int ret;
char *absolute_to;
/* We must absolutize the file path as the save is done out of process */
if (virFileAbsPath(to, &absolute_to) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute output file path"));
goto error;
}
ret = conn->driver->domainSaveFlags(domain, absolute_to, dxml, flags);
VIR_FREE(absolute_to);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainRestore:
* @conn: pointer to the hypervisor connection
* @from: path to the input file
*
* This method will restore a domain saved to disk by virDomainSave().
*
* See virDomainRestoreFlags() for more control.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainRestore(virConnectPtr conn, const char *from)
{
VIR_DEBUG("conn=%p, from=%s", conn, from);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (from == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainRestore) {
int ret;
char *absolute_from;
/* We must absolutize the file path as the restore is done out of process */
if (virFileAbsPath(from, &absolute_from) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute input file path"));
goto error;
}
ret = conn->driver->domainRestore(conn, absolute_from);
VIR_FREE(absolute_from);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainRestoreFlags:
* @conn: pointer to the hypervisor connection
* @from: path to the input file
* @dxml: (optional) XML config for adjusting guest xml used on restore
* @flags: bitwise-OR of virDomainSaveRestoreFlags
*
* This method will restore a domain saved to disk by virDomainSave().
*
* If the hypervisor supports it, @dxml can be used to alter
* host-specific portions of the domain XML that will be used when
* restoring an image. For example, it is possible to alter the
* backing filename that is associated with a disk device, in order to
* prepare for file renaming done as part of backing up the disk
* device while the domain is stopped.
*
* If @flags includes VIR_DOMAIN_SAVE_BYPASS_CACHE, then libvirt will
* attempt to bypass the file system cache while restoring the file, or
* fail if it cannot do so for the given system; this can allow less
* pressure on file system cache, but also risks slowing saves to NFS.
*
* Normally, the saved state file will remember whether the domain was
* running or paused, and restore defaults to the same state.
* Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in
* @flags will override the default read from the file. These two
* flags are mutually exclusive.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainRestoreFlags(virConnectPtr conn, const char *from, const char *dxml,
unsigned int flags)
{
VIR_DEBUG("conn=%p, from=%s, dxml=%s, flags=%x",
conn, from, NULLSTR(dxml), flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (from == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SAVE_RUNNING) && (flags & VIR_DOMAIN_SAVE_PAUSED)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("running and paused flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainRestoreFlags) {
int ret;
char *absolute_from;
/* We must absolutize the file path as the restore is done out of process */
if (virFileAbsPath(from, &absolute_from) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute input file path"));
goto error;
}
ret = conn->driver->domainRestoreFlags(conn, absolute_from, dxml,
flags);
VIR_FREE(absolute_from);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSaveImageGetXMLDesc:
* @conn: pointer to the hypervisor connection
* @file: path to saved state file
* @flags: bitwise-OR of subset of virDomainXMLFlags
*
* This method will extract the XML describing the domain at the time
* a saved state file was created. @file must be a file created
* previously by virDomainSave() or virDomainSaveFlags().
*
* No security-sensitive data will be included unless @flags contains
* VIR_DOMAIN_XML_SECURE; this flag is rejected on read-only
* connections. For this API, @flags should not contain either
* VIR_DOMAIN_XML_INACTIVE or VIR_DOMAIN_XML_UPDATE_CPU.
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of
* error. The caller must free() the returned value.
*/
char *
virDomainSaveImageGetXMLDesc(virConnectPtr conn, const char *file,
unsigned int flags)
{
VIR_DEBUG("conn=%p, file=%s, flags=%x",
conn, file, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (file == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((conn->flags & VIR_CONNECT_RO) && (flags & VIR_DOMAIN_XML_SECURE)) {
virLibConnError(VIR_ERR_OPERATION_DENIED,
_("virDomainSaveImageGetXMLDesc with secure flag"));
goto error;
}
if (conn->driver->domainSaveImageGetXMLDesc) {
char *ret;
char *absolute_file;
/* We must absolutize the file path as the read is done out of process */
if (virFileAbsPath(file, &absolute_file) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute input file path"));
goto error;
}
ret = conn->driver->domainSaveImageGetXMLDesc(conn, absolute_file,
flags);
VIR_FREE(absolute_file);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainSaveImageDefineXML:
* @conn: pointer to the hypervisor connection
* @file: path to saved state file
* @dxml: XML config for adjusting guest xml used on restore
* @flags: bitwise-OR of virDomainSaveRestoreFlags
*
* This updates the definition of a domain stored in a saved state
* file. @file must be a file created previously by virDomainSave()
* or virDomainSaveFlags().
*
* @dxml can be used to alter host-specific portions of the domain XML
* that will be used when restoring an image. For example, it is
* possible to alter the backing filename that is associated with a
* disk device, to match renaming done as part of backing up the disk
* device while the domain is stopped.
*
* Normally, the saved state file will remember whether the domain was
* running or paused, and restore defaults to the same state.
* Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in
* @flags will override the default saved into the file; omitting both
* leaves the file's default unchanged. These two flags are mutually
* exclusive.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSaveImageDefineXML(virConnectPtr conn, const char *file,
const char *dxml, unsigned int flags)
{
VIR_DEBUG("conn=%p, file=%s, dxml=%s, flags=%x",
conn, file, dxml, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!file || !dxml) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SAVE_RUNNING) && (flags & VIR_DOMAIN_SAVE_PAUSED)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("running and paused flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainSaveImageDefineXML) {
int ret;
char *absolute_file;
/* We must absolutize the file path as the read is done out of process */
if (virFileAbsPath(file, &absolute_file) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute input file path"));
goto error;
}
ret = conn->driver->domainSaveImageDefineXML(conn, absolute_file,
dxml, flags);
VIR_FREE(absolute_file);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainCoreDump:
* @domain: a domain object
* @to: path for the core file
* @flags: an OR'ed set of virDomainCoreDumpFlags
*
* This method will dump the core of a domain on a given file for analysis.
* Note that for remote Xen Daemon the file path will be interpreted in
* the remote host. Hypervisors may require the user to manually ensure
* proper permissions on the file named by @to.
*
* If @flags includes VIR_DUMP_CRASH, then leave the guest shut off with
* a crashed state after the dump completes. If @flags includes
* VIR_DUMP_LIVE, then make the core dump while continuing to allow
* the guest to run; otherwise, the guest is suspended during the dump.
* VIR_DUMP_RESET flag forces reset of the quest after dump.
* The above three flags are mutually exclusive.
*
* Additionally, if @flags includes VIR_DUMP_BYPASS_CACHE, then libvirt
* will attempt to bypass the file system cache while creating the file,
* or fail if it cannot do so for the given system; this can allow less
* pressure on file system cache, but also risks slowing saves to NFS.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainCoreDump(virDomainPtr domain, const char *to, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "to=%s, flags=%x", to, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (to == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((flags & VIR_DUMP_CRASH) && (flags & VIR_DUMP_LIVE)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("crash and live flags are mutually exclusive"));
goto error;
}
if ((flags & VIR_DUMP_CRASH) && (flags & VIR_DUMP_RESET)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("crash and reset flags are mutually exclusive"));
goto error;
}
if ((flags & VIR_DUMP_LIVE) && (flags & VIR_DUMP_RESET)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("live and reset flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainCoreDump) {
int ret;
char *absolute_to;
/* We must absolutize the file path as the save is done out of process */
if (virFileAbsPath(to, &absolute_to) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute core file path"));
goto error;
}
ret = conn->driver->domainCoreDump(domain, absolute_to, flags);
VIR_FREE(absolute_to);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainScreenshot:
* @domain: a domain object
* @stream: stream to use as output
* @screen: monitor ID to take screenshot from
* @flags: extra flags, currently unused
*
* Take a screenshot of current domain console as a stream. The image format
* is hypervisor specific. Moreover, some hypervisors supports multiple
* displays per domain. These can be distinguished by @screen argument.
*
* This call sets up a stream; subsequent use of stream API is necessary
* to transfer actual data, determine how much data is successfully
* transfered, and detect any errors.
*
* The screen ID is the sequential number of screen. In case of multiple
* graphics cards, heads are enumerated before devices, e.g. having
* two graphics cards, both with four heads, screen ID 5 addresses
* the second head on the second card.
*
* Returns a string representing the mime-type of the image format, or
* NULL upon error. The caller must free() the returned value.
*/
char *
virDomainScreenshot(virDomainPtr domain,
virStreamPtr stream,
unsigned int screen,
unsigned int flags)
{
VIR_DOMAIN_DEBUG(domain, "stream=%p, flags=%x", stream, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (!VIR_IS_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_STREAM, __FUNCTION__);
return NULL;
}
if (domain->conn->flags & VIR_CONNECT_RO ||
stream->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (domain->conn->driver->domainScreenshot) {
char * ret;
ret = domain->conn->driver->domainScreenshot(domain, stream,
screen, flags);
if (ret == NULL)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return NULL;
}
/**
* virDomainShutdown:
* @domain: a domain object
*
* Shutdown a domain, the domain object is still usable thereafter but
* the domain OS is being stopped. Note that the guest OS may ignore the
* request. For guests that react to a shutdown request, the differences
* from virDomainDestroy() are that the guests disk storage will be in a
* stable state rather than having the (virtual) power cord pulled, and
* this command returns as soon as the shutdown request is issued rather
* than blocking until the guest is no longer running.
*
* If the domain is transient and has any snapshot metadata (see
* virDomainSnapshotNum()), then that metadata will automatically
* be deleted when the domain quits.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainShutdown(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainShutdown) {
int ret;
ret = conn->driver->domainShutdown (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainReboot:
* @domain: a domain object
* @flags: extra flags for the reboot operation, not used yet
*
* Reboot a domain, the domain object is still usable there after but
* the domain OS is being stopped for a restart.
* Note that the guest OS may ignore the request.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainReboot(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainReboot) {
int ret;
ret = conn->driver->domainReboot (domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainReset:
* @domain: a domain object
* @flags: extra flags for the reboot operation, not used yet
*
* Reset a domain immediately without any guest OS shutdown.
* Reset emulates the power reset button on a machine, where all
* hardware sees the RST line set and reinitializes internal state.
*
* Note that there is a risk of data loss caused by reset without any
* guest OS shutdown.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainReset(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainReset) {
int ret;
ret = conn->driver->domainReset (domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetName:
* @domain: a domain object
*
* Get the public name for that domain
*
* Returns a pointer to the name or NULL, the string need not be deallocated
* its lifetime will be the same as the domain object.
*/
const char *
virDomainGetName(virDomainPtr domain)
{
VIR_DEBUG("domain=%p", domain);
virResetLastError();
if (!VIR_IS_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return domain->name;
}
/**
* virDomainGetUUID:
* @domain: a domain object
* @uuid: pointer to a VIR_UUID_BUFLEN bytes array
*
* Get the UUID for a domain
*
* Returns -1 in case of error, 0 in case of success
*/
int
virDomainGetUUID(virDomainPtr domain, unsigned char *uuid)
{
VIR_DOMAIN_DEBUG(domain, "uuid=%p", uuid);
virResetLastError();
if (!VIR_IS_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (uuid == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(domain->conn);
return -1;
}
memcpy(uuid, &domain->uuid[0], VIR_UUID_BUFLEN);
return 0;
}
/**
* virDomainGetUUIDString:
* @domain: a domain object
* @buf: pointer to a VIR_UUID_STRING_BUFLEN bytes array
*
* Get the UUID for a domain as string. For more information about
* UUID see RFC4122.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virDomainGetUUIDString(virDomainPtr domain, char *buf)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DOMAIN_DEBUG(domain, "buf=%p", buf);
virResetLastError();
if (!VIR_IS_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (buf == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virDomainGetUUID(domain, &uuid[0]))
goto error;
virUUIDFormat(uuid, buf);
return 0;
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetID:
* @domain: a domain object
*
* Get the hypervisor ID number for the domain
*
* Returns the domain ID number or (unsigned int) -1 in case of error
*/
unsigned int
virDomainGetID(virDomainPtr domain)
{
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return (unsigned int)-1;
}
return domain->id;
}
/**
* virDomainGetOSType:
* @domain: a domain object
*
* Get the type of domain operation system.
*
* Returns the new string or NULL in case of error, the string must be
* freed by the caller.
*/
char *
virDomainGetOSType(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if (conn->driver->domainGetOSType) {
char *ret;
ret = conn->driver->domainGetOSType (domain);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return NULL;
}
/**
* virDomainGetMaxMemory:
* @domain: a domain object or NULL
*
* Retrieve the maximum amount of physical memory allocated to a
* domain. If domain is NULL, then this get the amount of memory reserved
* to Domain0 i.e. the domain where the application runs.
*
* Returns the memory size in kilobytes or 0 in case of error.
*/
unsigned long
virDomainGetMaxMemory(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return 0;
}
conn = domain->conn;
if (conn->driver->domainGetMaxMemory) {
unsigned long ret;
ret = conn->driver->domainGetMaxMemory (domain);
if (ret == 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return 0;
}
/**
* virDomainSetMaxMemory:
* @domain: a domain object or NULL
* @memory: the memory size in kilobytes
*
* Dynamically change the maximum amount of physical memory allocated to a
* domain. If domain is NULL, then this change the amount of memory reserved
* to Domain0 i.e. the domain where the application runs.
* This function may require privileged access to the hypervisor.
*
* This command is hypervisor-specific for whether active, persistent,
* or both configurations are changed; for more control, use
* virDomainSetMemoryFlags().
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSetMaxMemory(virDomainPtr domain, unsigned long memory)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "memory=%lu", memory);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!memory) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSetMaxMemory) {
int ret;
ret = conn->driver->domainSetMaxMemory (domain, memory);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetMemory:
* @domain: a domain object or NULL
* @memory: the memory size in kilobytes
*
* Dynamically change the target amount of physical memory allocated to a
* domain. If domain is NULL, then this change the amount of memory reserved
* to Domain0 i.e. the domain where the application runs.
* This function may require privileged access to the hypervisor.
*
* This command only changes the runtime configuration of the domain,
* so can only be called on an active domain.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSetMemory(virDomainPtr domain, unsigned long memory)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "memory=%lu", memory);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!memory) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSetMemory) {
int ret;
ret = conn->driver->domainSetMemory (domain, memory);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/*
* virDomainSetMemoryFlags:
* @domain: a domain object or NULL
* @memory: the memory size in kilobytes
* @flags: an OR'ed set of virDomainMemoryModFlags
*
* Dynamically change the target amount of physical memory allocated to a
* domain. If domain is NULL, then this change the amount of memory reserved
* to Domain0 i.e. the domain where the application runs.
* This function may require privileged access to the hypervisor.
*
* @flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG.
* Both flags may be set. If VIR_DOMAIN_AFFECT_LIVE is set, the change affects
* a running domain and will fail if domain is not active.
* If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state,
* and will fail for transient domains. If neither flag is specified
* (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain
* modifies persistent setup, while an active domain is hypervisor-dependent
* on whether just live or both live and persistent state is changed.
* If VIR_DOMAIN_MEM_MAXIMUM is set, the change affects domain's maximum memory
* size rather than current memory size.
* Not all hypervisors can support all flag combinations.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainSetMemoryFlags(virDomainPtr domain, unsigned long memory,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "memory=%lu, flags=%x", memory, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!memory) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSetMemoryFlags) {
int ret;
ret = conn->driver->domainSetMemoryFlags(domain, memory, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/* Helper function called to validate incoming client array on any
* interface that sets typed parameters in the hypervisor. */
static int
virTypedParameterValidateSet(virDomainPtr domain,
virTypedParameterPtr params,
int nparams)
{
bool string_okay;
int i;
string_okay = VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver,
domain->conn,
VIR_DRV_FEATURE_TYPED_PARAM_STRING);
for (i = 0; i < nparams; i++) {
if (strnlen(params[i].field, VIR_TYPED_PARAM_FIELD_LENGTH) ==
VIR_TYPED_PARAM_FIELD_LENGTH) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("string parameter name '%.*s' too long"),
VIR_TYPED_PARAM_FIELD_LENGTH,
params[i].field);
virDispatchError(NULL);
return -1;
}
if (params[i].type == VIR_TYPED_PARAM_STRING) {
if (string_okay) {
if (!params[i].value.s) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("NULL string parameter '%s'"),
params[i].field);
virDispatchError(NULL);
return -1;
}
} else {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("string parameter '%s' unsupported"),
params[i].field);
virDispatchError(NULL);
return -1;
}
}
}
return 0;
}
/**
* virDomainSetMemoryParameters:
* @domain: pointer to domain object
* @params: pointer to memory parameter objects
* @nparams: number of memory parameter (this value can be the same or
* less than the number of parameters supported)
* @flags: bitwise-OR of virDomainModificationImpact
*
* Change all or a subset of the memory tunables.
* This function may require privileged access to the hypervisor.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainSetMemoryParameters(virDomainPtr domain,
virTypedParameterPtr params,
int nparams, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%d, flags=%x",
params, nparams, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((nparams <= 0) || (params == NULL)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virTypedParameterValidateSet(domain, params, nparams) < 0)
return -1;
conn = domain->conn;
if (conn->driver->domainSetMemoryParameters) {
int ret;
ret = conn->driver->domainSetMemoryParameters (domain, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetMemoryParameters:
* @domain: pointer to domain object
* @params: pointer to memory parameter object
* (return value, allocated by the caller)
* @nparams: pointer to number of memory parameters; input and output
* @flags: bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
*
* Get all memory parameters. On input, @nparams gives the size of the
* @params array; on output, @nparams gives how many slots were filled
* with parameter information, which might be less but will not exceed
* the input value.
*
* As a special case, calling with @params as NULL and @nparams as 0 on
* input will cause @nparams on output to contain the number of parameters
* supported by the hypervisor. The caller should then allocate @params
* array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API
* again.
*
* Here is a sample code snippet:
*
* if ((virDomainGetMemoryParameters(dom, NULL, &nparams, 0) == 0) &&
* (nparams != 0)) {
* if ((params = malloc(sizeof(*params) * nparams)) == NULL)
* goto error;
* memset(params, 0, sizeof(*params) * nparams);
* if (virDomainGetMemoryParameters(dom, params, &nparams, 0))
* goto error;
* }
*
* This function may require privileged access to the hypervisor. This function
* expects the caller to allocate the @params.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainGetMemoryParameters(virDomainPtr domain,
virTypedParameterPtr params,
int *nparams, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%d, flags=%x",
params, (nparams) ? *nparams : -1, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((nparams == NULL) || (*nparams < 0) ||
(params == NULL && *nparams != 0)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_TYPED_PARAM_STRING))
flags |= VIR_TYPED_PARAM_STRING_OKAY;
conn = domain->conn;
if (conn->driver->domainGetMemoryParameters) {
int ret;
ret = conn->driver->domainGetMemoryParameters (domain, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetBlkioParameters:
* @domain: pointer to domain object
* @params: pointer to blkio parameter objects
* @nparams: number of blkio parameters (this value can be the same or
* less than the number of parameters supported)
* @flags: bitwise-OR of virDomainModificationImpact
*
* Change all or a subset of the blkio tunables.
* This function may require privileged access to the hypervisor.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainSetBlkioParameters(virDomainPtr domain,
virTypedParameterPtr params,
int nparams, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%d, flags=%x",
params, nparams, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((nparams <= 0) || (params == NULL)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virTypedParameterValidateSet(domain, params, nparams) < 0)
return -1;
conn = domain->conn;
if (conn->driver->domainSetBlkioParameters) {
int ret;
ret = conn->driver->domainSetBlkioParameters (domain, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetBlkioParameters:
* @domain: pointer to domain object
* @params: pointer to blkio parameter object
* (return value, allocated by the caller)
* @nparams: pointer to number of blkio parameters; input and output
* @flags: bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
*
* Get all blkio parameters. On input, @nparams gives the size of the
* @params array; on output, @nparams gives how many slots were filled
* with parameter information, which might be less but will not exceed
* the input value.
*
* As a special case, calling with @params as NULL and @nparams as 0 on
* input will cause @nparams on output to contain the number of parameters
* supported by the hypervisor. The caller should then allocate @params
* array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API
* again.
*
* See virDomainGetMemoryParameters() for an equivalent usage example.
*
* This function may require privileged access to the hypervisor. This function
* expects the caller to allocate the @params.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainGetBlkioParameters(virDomainPtr domain,
virTypedParameterPtr params,
int *nparams, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%d, flags=%x",
params, (nparams) ? *nparams : -1, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((nparams == NULL) || (*nparams < 0) ||
(params == NULL && *nparams != 0)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_TYPED_PARAM_STRING))
flags |= VIR_TYPED_PARAM_STRING_OKAY;
conn = domain->conn;
if (conn->driver->domainGetBlkioParameters) {
int ret;
ret = conn->driver->domainGetBlkioParameters (domain, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError (VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetInfo:
* @domain: a domain object
* @info: pointer to a virDomainInfo structure allocated by the user
*
* Extract information about a domain. Note that if the connection
* used to get the domain is limited only a partial set of the information
* can be extracted.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "info=%p", info);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (info == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memset(info, 0, sizeof(virDomainInfo));
conn = domain->conn;
if (conn->driver->domainGetInfo) {
int ret;
ret = conn->driver->domainGetInfo (domain, info);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetState:
* @domain: a domain object
* @state: returned state of the domain (one of virDomainState)
* @reason: returned reason which led to @state (one of virDomain*Reason
* corresponding to the current state); it is allowed to be NULL
* @flags: additional flags, 0 for now.
*
* Extract domain state. Each state can be accompanied with a reason (if known)
* which led to the state.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainGetState(virDomainPtr domain,
int *state,
int *reason,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "state=%p, reason=%p, flags=%x",
state, reason, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!state) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetState) {
int ret;
ret = conn->driver->domainGetState(domain, state, reason, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetControlInfo:
* @domain: a domain object
* @info: pointer to a virDomainControlInfo structure allocated by the user
* @flags: additional flags, 0 for now
*
* Extract details about current state of control interface to a domain.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainGetControlInfo(virDomainPtr domain,
virDomainControlInfoPtr info,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "info=%p, flags=%x", info, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!info) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetControlInfo) {
int ret;
ret = conn->driver->domainGetControlInfo(domain, info, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetXMLDesc:
* @domain: a domain object
* @flags: an OR'ed set of virDomainXMLFlags
*
* Provide an XML description of the domain. The description may be reused
* later to relaunch the domain with virDomainCreateXML().
*
* No security-sensitive data will be included unless @flags contains
* VIR_DOMAIN_XML_SECURE; this flag is rejected on read-only
* connections. If @flags includes VIR_DOMAIN_XML_INACTIVE, then the
* XML represents the configuration that will be used on the next boot
* of a persistent domain; otherwise, the configuration represents the
* currently running domain. If @flags contains
* VIR_DOMAIN_XML_UPDATE_CPU, then the portion of the domain XML
* describing CPU capabilities is modified to match actual
* capabilities of the host.
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virDomainGetXMLDesc(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if ((conn->flags & VIR_CONNECT_RO) && (flags & VIR_DOMAIN_XML_SECURE)) {
virLibConnError(VIR_ERR_OPERATION_DENIED,
_("virDomainGetXMLDesc with secure flag"));
goto error;
}
if (conn->driver->domainGetXMLDesc) {
char *ret;
ret = conn->driver->domainGetXMLDesc(domain, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return NULL;
}
/**
* virConnectDomainXMLFromNative:
* @conn: a connection object
* @nativeFormat: configuration format importing from
* @nativeConfig: the configuration data to import
* @flags: currently unused, pass 0
*
* Reads native configuration data describing a domain, and
* generates libvirt domain XML. The format of the native
* data is hypervisor dependant.
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *virConnectDomainXMLFromNative(virConnectPtr conn,
const char *nativeFormat,
const char *nativeConfig,
unsigned int flags)
{
VIR_DEBUG("conn=%p, format=%s, config=%s, flags=%x",
conn, nativeFormat, nativeConfig, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (nativeFormat == NULL || nativeConfig == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainXMLFromNative) {
char *ret;
ret = conn->driver->domainXMLFromNative (conn,
nativeFormat,
nativeConfig,
flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virConnectDomainXMLToNative:
* @conn: a connection object
* @nativeFormat: configuration format exporting to
* @domainXml: the domain configuration to export
* @flags: currently unused, pass 0
*
* Reads a domain XML configuration document, and generates
* a native configuration file describing the domain.
* The format of the native data is hypervisor dependant.
*
* Returns a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error.
* the caller must free() the returned value.
*/
char *virConnectDomainXMLToNative(virConnectPtr conn,
const char *nativeFormat,
const char *domainXml,
unsigned int flags)
{
VIR_DEBUG("conn=%p, format=%s, xml=%s, flags=%x",
conn, nativeFormat, domainXml, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (nativeFormat == NULL || domainXml == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainXMLToNative) {
char *ret;
ret = conn->driver->domainXMLToNative(conn,
nativeFormat,
domainXml,
flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/*
* Sequence v1:
*
* Dst: Prepare
* - Get ready to accept incoming VM
* - Generate optional cookie to pass to src
*
* Src: Perform
* - Start migration and wait for send completion
* - Kill off VM if successful, resume if failed
*
* Dst: Finish
* - Wait for recv completion and check status
* - Kill off VM if unsuccessful
*
*/
static virDomainPtr
virDomainMigrateVersion1 (virDomainPtr domain,
virConnectPtr dconn,
unsigned long flags,
const char *dname,
const char *uri,
unsigned long bandwidth)
{
virDomainPtr ddomain = NULL;
char *uri_out = NULL;
char *cookie = NULL;
int cookielen = 0, ret;
virDomainInfo info;
VIR_DOMAIN_DEBUG(domain,
"dconn=%p, flags=%lx, dname=%s, uri=%s, bandwidth=%lu",
dconn, flags, NULLSTR(dname), NULLSTR(uri), bandwidth);
ret = virDomainGetInfo (domain, &info);
if (ret == 0 && info.state == VIR_DOMAIN_PAUSED) {
flags |= VIR_MIGRATE_PAUSED;
}
/* Prepare the migration.
*
* The destination host may return a cookie, or leave cookie as
* NULL.
*
* The destination host MUST set uri_out if uri_in is NULL.
*
* If uri_in is non-NULL, then the destination host may modify
* the URI by setting uri_out. If it does not wish to modify
* the URI, it should leave uri_out as NULL.
*/
if (dconn->driver->domainMigratePrepare
(dconn, &cookie, &cookielen, uri, &uri_out, flags, dname,
bandwidth) == -1)
goto done;
if (uri == NULL && uri_out == NULL) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("domainMigratePrepare did not set uri"));
goto done;
}
if (uri_out)
uri = uri_out; /* Did domainMigratePrepare change URI? */
/* Perform the migration. The driver isn't supposed to return
* until the migration is complete.
*/
if (domain->conn->driver->domainMigratePerform
(domain, cookie, cookielen, uri, flags, dname, bandwidth) == -1)
goto done;
/* Get the destination domain and return it or error.
* 'domain' no longer actually exists at this point
* (or so we hope), but we still use the object in memory
* in order to get the name.
*/
dname = dname ? dname : domain->name;
if (dconn->driver->domainMigrateFinish)
ddomain = dconn->driver->domainMigrateFinish
(dconn, dname, cookie, cookielen, uri, flags);
else
ddomain = virDomainLookupByName (dconn, dname);
done:
VIR_FREE (uri_out);
VIR_FREE (cookie);
return ddomain;
}
/*
* Sequence v2:
*
* Src: DumpXML
* - Generate XML to pass to dst
*
* Dst: Prepare
* - Get ready to accept incoming VM
* - Generate optional cookie to pass to src
*
* Src: Perform
* - Start migration and wait for send completion
* - Kill off VM if successful, resume if failed
*
* Dst: Finish
* - Wait for recv completion and check status
* - Kill off VM if unsuccessful
*
*/
static virDomainPtr
virDomainMigrateVersion2 (virDomainPtr domain,
virConnectPtr dconn,
unsigned long flags,
const char *dname,
const char *uri,
unsigned long bandwidth)
{
virDomainPtr ddomain = NULL;
char *uri_out = NULL;
char *cookie = NULL;
char *dom_xml = NULL;
int cookielen = 0, ret;
virDomainInfo info;
virErrorPtr orig_err = NULL;
int cancelled;
VIR_DOMAIN_DEBUG(domain,
"dconn=%p, flags=%lx, dname=%s, uri=%s, bandwidth=%lu",
dconn, flags, NULLSTR(dname), NULLSTR(uri), bandwidth);
/* Prepare the migration.
*
* The destination host may return a cookie, or leave cookie as
* NULL.
*
* The destination host MUST set uri_out if uri_in is NULL.
*
* If uri_in is non-NULL, then the destination host may modify
* the URI by setting uri_out. If it does not wish to modify
* the URI, it should leave uri_out as NULL.
*/
/* In version 2 of the protocol, the prepare step is slightly
* different. We fetch the domain XML of the source domain
* and pass it to Prepare2.
*/
if (!domain->conn->driver->domainGetXMLDesc) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, __FUNCTION__);
virDispatchError(domain->conn);
return NULL;
}
dom_xml = domain->conn->driver->domainGetXMLDesc(domain,
VIR_DOMAIN_XML_SECURE |
VIR_DOMAIN_XML_UPDATE_CPU);
if (!dom_xml)
return NULL;
ret = virDomainGetInfo (domain, &info);
if (ret == 0 && info.state == VIR_DOMAIN_PAUSED) {
flags |= VIR_MIGRATE_PAUSED;
}
VIR_DEBUG("Prepare2 %p flags=%lx", dconn, flags);
ret = dconn->driver->domainMigratePrepare2
(dconn, &cookie, &cookielen, uri, &uri_out, flags, dname,
bandwidth, dom_xml);
VIR_FREE (dom_xml);
if (ret == -1)
goto done;
if (uri == NULL && uri_out == NULL) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("domainMigratePrepare2 did not set uri"));
virDispatchError(domain->conn);
cancelled = 1;
goto finish;
}
if (uri_out)
uri = uri_out; /* Did domainMigratePrepare2 change URI? */
/* Perform the migration. The driver isn't supposed to return
* until the migration is complete.
*/
VIR_DEBUG("Perform %p", domain->conn);
ret = domain->conn->driver->domainMigratePerform
(domain, cookie, cookielen, uri, flags, dname, bandwidth);
/* Perform failed. Make sure Finish doesn't overwrite the error */
if (ret < 0)
orig_err = virSaveLastError();
/* If Perform returns < 0, then we need to cancel the VM
* startup on the destination
*/
cancelled = ret < 0 ? 1 : 0;
finish:
/* In version 2 of the migration protocol, we pass the
* status code from the sender to the destination host,
* so it can do any cleanup if the migration failed.
*/
dname = dname ? dname : domain->name;
VIR_DEBUG("Finish2 %p ret=%d", dconn, ret);
ddomain = dconn->driver->domainMigrateFinish2
(dconn, dname, cookie, cookielen, uri, flags, cancelled);
done:
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
VIR_FREE (uri_out);
VIR_FREE (cookie);
return ddomain;
}
/*
* Sequence v3:
*
* Src: Begin
* - Generate XML to pass to dst
* - Generate optional cookie to pass to dst
*
* Dst: Prepare
* - Get ready to accept incoming VM
* - Generate optional cookie to pass to src
*
* Src: Perform
* - Start migration and wait for send completion
* - Generate optional cookie to pass to dst
*
* Dst: Finish
* - Wait for recv completion and check status
* - Kill off VM if failed, resume if success
* - Generate optional cookie to pass to src
*
* Src: Confirm
* - Kill off VM if success, resume if failed
*
*/
static virDomainPtr
virDomainMigrateVersion3(virDomainPtr domain,
virConnectPtr dconn,
const char *xmlin,
unsigned long flags,
const char *dname,
const char *uri,
unsigned long bandwidth)
{
virDomainPtr ddomain = NULL;
char *uri_out = NULL;
char *cookiein = NULL;
char *cookieout = NULL;
char *dom_xml = NULL;
int cookieinlen = 0;
int cookieoutlen = 0;
int ret;
virDomainInfo info;
virErrorPtr orig_err = NULL;
int cancelled = 1;
unsigned long protection = 0;
bool notify_source = true;
VIR_DOMAIN_DEBUG(domain, "dconn=%p xmlin=%s, flags=%lx, "
"dname=%s, uri=%s, bandwidth=%lu",
dconn, NULLSTR(xmlin), flags,
NULLSTR(dname), NULLSTR(uri), bandwidth);
if (!domain->conn->driver->domainMigrateBegin3 ||
!domain->conn->driver->domainMigratePerform3 ||
!domain->conn->driver->domainMigrateConfirm3 ||
!dconn->driver->domainMigratePrepare3 ||
!dconn->driver->domainMigrateFinish3) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, __FUNCTION__);
virDispatchError(domain->conn);
return NULL;
}
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATE_CHANGE_PROTECTION))
protection = VIR_MIGRATE_CHANGE_PROTECTION;
VIR_DEBUG("Begin3 %p", domain->conn);
dom_xml = domain->conn->driver->domainMigrateBegin3
(domain, xmlin, &cookieout, &cookieoutlen,
flags | protection, dname, bandwidth);
if (!dom_xml)
goto done;
ret = virDomainGetInfo (domain, &info);
if (ret == 0 && info.state == VIR_DOMAIN_PAUSED) {
flags |= VIR_MIGRATE_PAUSED;
}
VIR_DEBUG("Prepare3 %p flags=%lx", dconn, flags);
cookiein = cookieout;
cookieinlen = cookieoutlen;
cookieout = NULL;
cookieoutlen = 0;
ret = dconn->driver->domainMigratePrepare3
(dconn, cookiein, cookieinlen, &cookieout, &cookieoutlen,
uri, &uri_out, flags, dname, bandwidth, dom_xml);
VIR_FREE (dom_xml);
if (ret == -1) {
if (protection) {
/* Begin already started a migration job so we need to cancel it by
* calling Confirm while making sure it doesn't overwrite the error
*/
orig_err = virSaveLastError();
goto confirm;
} else {
goto done;
}
}
if (uri == NULL && uri_out == NULL) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("domainMigratePrepare3 did not set uri"));
virDispatchError(domain->conn);
goto finish;
}
if (uri_out)
uri = uri_out; /* Did domainMigratePrepare3 change URI? */
/* Perform the migration. The driver isn't supposed to return
* until the migration is complete. The src VM should remain
* running, but in paused state until the destination can
* confirm migration completion.
*/
VIR_DEBUG("Perform3 %p uri=%s", domain->conn, uri);
VIR_FREE(cookiein);
cookiein = cookieout;
cookieinlen = cookieoutlen;
cookieout = NULL;
cookieoutlen = 0;
/* dconnuri not relevant in non-P2P modes, so left NULL here */
ret = domain->conn->driver->domainMigratePerform3
(domain, NULL, cookiein, cookieinlen,
&cookieout, &cookieoutlen, NULL,
uri, flags | protection, dname, bandwidth);
/* Perform failed. Make sure Finish doesn't overwrite the error */
if (ret < 0) {
orig_err = virSaveLastError();
/* Perform failed so we don't need to call confirm to let source know
* about the failure.
*/
notify_source = false;
}
/* If Perform returns < 0, then we need to cancel the VM
* startup on the destination
*/
cancelled = ret < 0 ? 1 : 0;
finish:
/*
* The status code from the source is passed to the destination.
* The dest can cleanup if the source indicated it failed to
* send all migration data. Returns NULL for ddomain if
* the dest was unable to complete migration.
*/
VIR_DEBUG("Finish3 %p ret=%d", dconn, ret);
VIR_FREE(cookiein);
cookiein = cookieout;
cookieinlen = cookieoutlen;
cookieout = NULL;
cookieoutlen = 0;
dname = dname ? dname : domain->name;
ddomain = dconn->driver->domainMigrateFinish3
(dconn, dname, cookiein, cookieinlen, &cookieout, &cookieoutlen,
NULL, uri, flags, cancelled);
/* If ddomain is NULL, then we were unable to start
* the guest on the target, and must restart on the
* source. There is a small chance that the ddomain
* is NULL due to an RPC failure, in which case
* ddomain could in fact be running on the dest.
* The lock manager plugins should take care of
* safety in this scenario.
*/
cancelled = ddomain == NULL ? 1 : 0;
/* If finish3 set an error, and we don't have an earlier
* one we need to preserve it in case confirm3 overwrites
*/
if (!orig_err)
orig_err = virSaveLastError();
confirm:
/*
* If cancelled, then src VM will be restarted, else it will be killed.
* Don't do this if migration failed on source and thus it was already
* cancelled there.
*/
if (notify_source) {
VIR_DEBUG("Confirm3 %p ret=%d domain=%p", domain->conn, ret, domain);
VIR_FREE(cookiein);
cookiein = cookieout;
cookieinlen = cookieoutlen;
cookieout = NULL;
cookieoutlen = 0;
ret = domain->conn->driver->domainMigrateConfirm3
(domain, cookiein, cookieinlen,
flags | protection, cancelled);
/* If Confirm3 returns -1, there's nothing more we can
* do, but fortunately worst case is that there is a
* domain left in 'paused' state on source.
*/
if (ret < 0) {
VIR_WARN("Guest %s probably left in 'paused' state on source",
domain->name);
}
}
done:
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
VIR_FREE(uri_out);
VIR_FREE(cookiein);
VIR_FREE(cookieout);
return ddomain;
}
/*
* In normal migration, the libvirt client co-ordinates communication
* between the 2 libvirtd instances on source & dest hosts.
*
* In this peer-2-peer migration alternative, the libvirt client
* only talks to the source libvirtd instance. The source libvirtd
* then opens its own connection to the destination and co-ordinates
* migration itself.
*/
static int
virDomainMigratePeer2Peer (virDomainPtr domain,
const char *xmlin,
unsigned long flags,
const char *dname,
const char *dconnuri,
const char *uri,
unsigned long bandwidth)
{
xmlURIPtr tempuri = NULL;
VIR_DOMAIN_DEBUG(domain, "xmlin=%s, flags=%lx, dname=%s, "
"dconnuri=%s, uri=%s, bandwidth=%lu",
NULLSTR(xmlin), flags, NULLSTR(dname),
NULLSTR(dconnuri), NULLSTR(uri), bandwidth);
if (!domain->conn->driver->domainMigratePerform) {
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
virDispatchError(domain->conn);
return -1;
}
tempuri = xmlParseURI(dconnuri);
if (!tempuri) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(domain->conn);
return -1;
}
if (!tempuri->server || STRPREFIX(tempuri->server, "localhost")) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(domain->conn);
xmlFreeURI(tempuri);
return -1;
}
xmlFreeURI(tempuri);
/* Perform the migration. The driver isn't supposed to return
* until the migration is complete.
*/
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V3)) {
VIR_DEBUG("Using migration protocol 3");
return domain->conn->driver->domainMigratePerform3(domain,
xmlin,
NULL, /* cookiein */
0, /* cookieinlen */
NULL, /* cookieoutlen */
NULL, /* cookieoutlen */
dconnuri,
uri,
flags,
dname,
bandwidth);
} else {
VIR_DEBUG("Using migration protocol 2");
if (xmlin) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to change target guest XML during migration"));
return -1;
}
if (uri) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to override peer2peer migration URI"));
return -1;
}
return domain->conn->driver->domainMigratePerform(domain,
NULL, /* cookie */
0, /* cookielen */
dconnuri,
flags,
dname,
bandwidth);
}
}
/*
* In normal migration, the libvirt client co-ordinates communication
* between the 2 libvirtd instances on source & dest hosts.
*
* Some hypervisors support an alternative, direct migration where
* there is no requirement for a libvirtd instance on the dest host.
* In this case
*
* eg, XenD can talk direct to XenD, so libvirtd on dest does not
* need to be involved at all, or even running
*/
static int
virDomainMigrateDirect (virDomainPtr domain,
const char *xmlin,
unsigned long flags,
const char *dname,
const char *uri,
unsigned long bandwidth)
{
VIR_DOMAIN_DEBUG(domain,
"xmlin=%s, flags=%lx, dname=%s, uri=%s, bandwidth=%lu",
NULLSTR(xmlin), flags, NULLSTR(dname), NULLSTR(uri),
bandwidth);
if (!domain->conn->driver->domainMigratePerform) {
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
virDispatchError(domain->conn);
return -1;
}
/* Perform the migration. The driver isn't supposed to return
* until the migration is complete.
*/
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V3)) {
VIR_DEBUG("Using migration protocol 3");
/* dconn URI not relevant in direct migration, since no
* target libvirtd is involved */
return domain->conn->driver->domainMigratePerform3(domain,
xmlin,
NULL, /* cookiein */
0, /* cookieinlen */
NULL, /* cookieoutlen */
NULL, /* cookieoutlen */
NULL, /* dconnuri */
uri,
flags,
dname,
bandwidth);
} else {
VIR_DEBUG("Using migration protocol 2");
if (xmlin) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to change target guest XML during migration"));
return -1;
}
return domain->conn->driver->domainMigratePerform(domain,
NULL, /* cookie */
0, /* cookielen */
uri,
flags,
dname,
bandwidth);
}
}
/**
* virDomainMigrate:
* @domain: a domain object
* @dconn: destination host (a connection object)
* @flags: flags
* @dname: (optional) rename domain to this at destination
* @uri: (optional) dest hostname/URI as seen from the source host
* @bandwidth: (optional) specify migration bandwidth limit in Mbps
*
* Migrate the domain object from its current host to the destination
* host given by dconn (a connection to the destination host).
*
* Flags may be one of more of the following:
* VIR_MIGRATE_LIVE Do not pause the VM during migration
* VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts
* VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel
* VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain
* on the destination host.
* VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the
* domain on the source host.
* VIR_MIGRATE_PAUSED Leave the domain suspended on the remote side.
* VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration
* changes during the migration process (set
* automatically when supported).
*
* VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.
* Applications using the VIR_MIGRATE_PEER2PEER flag will probably
* prefer to invoke virDomainMigrateToURI, avoiding the need to
* open connection to the destination host themselves.
*
* If a hypervisor supports renaming domains during migration,
* then you may set the dname parameter to the new name (otherwise
* it keeps the same name). If this is not supported by the
* hypervisor, dname must be NULL or else you will get an error.
*
* If the VIR_MIGRATE_PEER2PEER flag is set, the uri parameter
* must be a valid libvirt connection URI, by which the source
* libvirt driver can connect to the destination libvirt. If
* omitted, the dconn connection object will be queried for its
* current URI.
*
* If the VIR_MIGRATE_PEER2PEER flag is NOT set, the URI parameter
* takes a hypervisor specific format. The hypervisor capabilities
* XML includes details of the support URI schemes. If omitted
* the dconn will be asked for a default URI.
*
* In either case it is typically only necessary to specify a
* URI if the destination host has multiple interfaces and a
* specific interface is required to transmit migration data.
*
* The maximum bandwidth (in Mbps) that will be used to do migration
* can be specified with the bandwidth parameter. If set to 0,
* libvirt will choose a suitable default. Some hypervisors do
* not support this feature and will return an error if bandwidth
* is not 0.
*
* To see which features are supported by the current hypervisor,
* see virConnectGetCapabilities, /capabilities/host/migration_features.
*
* There are many limitations on migration imposed by the underlying
* technology - for example it may not be possible to migrate between
* different processors even with the same architecture, or between
* different types of hypervisor.
*
* Returns the new domain object if the migration was successful,
* or NULL in case of error. Note that the new domain object
* exists in the scope of the destination connection (dconn).
*/
virDomainPtr
virDomainMigrate (virDomainPtr domain,
virConnectPtr dconn,
unsigned long flags,
const char *dname,
const char *uri,
unsigned long bandwidth)
{
virDomainPtr ddomain = NULL;
VIR_DOMAIN_DEBUG(domain,
"dconn=%p, flags=%lx, dname=%s, uri=%s, bandwidth=%lu",
dconn, flags, NULLSTR(dname), NULLSTR(uri), bandwidth);
virResetLastError();
/* First checkout the source */
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
/* Now checkout the destination */
if (!VIR_IS_CONNECT(dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
goto error;
}
if (dconn->flags & VIR_CONNECT_RO) {
/* NB, deliberately report error against source object, not dest */
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (flags & VIR_MIGRATE_PEER2PEER) {
if (VIR_DRV_SUPPORTS_FEATURE (domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_P2P)) {
char *dstURI = NULL;
if (uri == NULL) {
dstURI = virConnectGetURI(dconn);
if (!dstURI)
return NULL;
}
VIR_DEBUG("Using peer2peer migration");
if (virDomainMigratePeer2Peer(domain, NULL, flags, dname,
uri ? uri : dstURI, NULL, bandwidth) < 0) {
VIR_FREE(dstURI);
goto error;
}
VIR_FREE(dstURI);
ddomain = virDomainLookupByName (dconn, dname ? dname : domain->name);
} else {
/* This driver does not support peer to peer migration */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
} else {
/* Change protection requires support only on source side, and
* is only needed in v3 migration, which automatically re-adds
* the flag for just the source side. We mask it out for
* non-peer2peer to allow migration from newer source to an
* older destination that rejects the flag. */
if (flags & VIR_MIGRATE_CHANGE_PROTECTION &&
!VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATE_CHANGE_PROTECTION)) {
virLibConnError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("cannot enforce change protection"));
goto error;
}
flags &= ~VIR_MIGRATE_CHANGE_PROTECTION;
if (flags & VIR_MIGRATE_TUNNELLED) {
virLibConnError(VIR_ERR_OPERATION_INVALID,
_("cannot perform tunnelled migration without using peer2peer flag"));
goto error;
}
/* Check that migration is supported by both drivers. */
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V3) &&
VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
VIR_DRV_FEATURE_MIGRATION_V3)) {
VIR_DEBUG("Using migration protocol 3");
ddomain = virDomainMigrateVersion3(domain, dconn, NULL,
flags, dname, uri, bandwidth);
} else if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V2) &&
VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
VIR_DRV_FEATURE_MIGRATION_V2)) {
VIR_DEBUG("Using migration protocol 2");
ddomain = virDomainMigrateVersion2(domain, dconn, flags,
dname, uri, bandwidth);
} else if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V1) &&
VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
VIR_DRV_FEATURE_MIGRATION_V1)) {
VIR_DEBUG("Using migration protocol 1");
ddomain = virDomainMigrateVersion1(domain, dconn, flags,
dname, uri, bandwidth);
} else {
/* This driver does not support any migration method */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
}
if (ddomain == NULL)
goto error;
return ddomain;
error:
virDispatchError(domain->conn);
return NULL;
}
/**
* virDomainMigrate2:
* @domain: a domain object
* @dconn: destination host (a connection object)
* @flags: flags
* @dxml: (optional) XML config for launching guest on target
* @dname: (optional) rename domain to this at destination
* @uri: (optional) dest hostname/URI as seen from the source host
* @bandwidth: (optional) specify migration bandwidth limit in Mbps
*
* Migrate the domain object from its current host to the destination
* host given by dconn (a connection to the destination host).
*
* Flags may be one of more of the following:
* VIR_MIGRATE_LIVE Do not pause the VM during migration
* VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts
* VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel
* VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain
* on the destination host.
* VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the
* domain on the source host.
* VIR_MIGRATE_PAUSED Leave the domain suspended on the remote side.
* VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration
* changes during the migration process (set
* automatically when supported).
*
* VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.
* Applications using the VIR_MIGRATE_PEER2PEER flag will probably
* prefer to invoke virDomainMigrateToURI, avoiding the need to
* open connection to the destination host themselves.
*
* If a hypervisor supports renaming domains during migration,
* then you may set the dname parameter to the new name (otherwise
* it keeps the same name). If this is not supported by the
* hypervisor, dname must be NULL or else you will get an error.
*
* If the VIR_MIGRATE_PEER2PEER flag is set, the uri parameter
* must be a valid libvirt connection URI, by which the source
* libvirt driver can connect to the destination libvirt. If
* omitted, the dconn connection object will be queried for its
* current URI.
*
* If the VIR_MIGRATE_PEER2PEER flag is NOT set, the URI parameter
* takes a hypervisor specific format. The hypervisor capabilities
* XML includes details of the support URI schemes. If omitted
* the dconn will be asked for a default URI.
*
* In either case it is typically only necessary to specify a
* URI if the destination host has multiple interfaces and a
* specific interface is required to transmit migration data.
*
* The maximum bandwidth (in Mbps) that will be used to do migration
* can be specified with the bandwidth parameter. If set to 0,
* libvirt will choose a suitable default. Some hypervisors do
* not support this feature and will return an error if bandwidth
* is not 0.
*
* To see which features are supported by the current hypervisor,
* see virConnectGetCapabilities, /capabilities/host/migration_features.
*
* There are many limitations on migration imposed by the underlying
* technology - for example it may not be possible to migrate between
* different processors even with the same architecture, or between
* different types of hypervisor.
*
* If the hypervisor supports it, @dxml can be used to alter
* host-specific portions of the domain XML that will be used on
* the destination. For example, it is possible to alter the
* backing filename that is associated with a disk device, in order
* to account for naming differences between source and destination
* in accessing the underlying storage. The migration will fail
* if @dxml would cause any guest-visible changes. Pass NULL
* if no changes are needed to the XML between source and destination.
* @dxml cannot be used to rename the domain during migration (use
* @dname for that purpose). Domain name in @dxml must either match the
* original domain name or @dname if it was specified.
*
* Returns the new domain object if the migration was successful,
* or NULL in case of error. Note that the new domain object
* exists in the scope of the destination connection (dconn).
*/
virDomainPtr
virDomainMigrate2(virDomainPtr domain,
virConnectPtr dconn,
const char *dxml,
unsigned long flags,
const char *dname,
const char *uri,
unsigned long bandwidth)
{
virDomainPtr ddomain = NULL;
VIR_DOMAIN_DEBUG(domain,
"dconn=%p, flags=%lx, dname=%s, uri=%s, bandwidth=%lu",
dconn, flags, NULLSTR(dname), NULLSTR(uri), bandwidth);
virResetLastError();
/* First checkout the source */
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
/* Now checkout the destination */
if (!VIR_IS_CONNECT(dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
goto error;
}
if (dconn->flags & VIR_CONNECT_RO) {
/* NB, deliberately report error against source object, not dest */
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (flags & VIR_MIGRATE_PEER2PEER) {
if (VIR_DRV_SUPPORTS_FEATURE (domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_P2P)) {
char *dstURI = virConnectGetURI(dconn);
if (!dstURI)
return NULL;
VIR_DEBUG("Using peer2peer migration");
if (virDomainMigratePeer2Peer(domain, dxml, flags, dname,
dstURI, uri, bandwidth) < 0) {
VIR_FREE(dstURI);
goto error;
}
VIR_FREE(dstURI);
ddomain = virDomainLookupByName (dconn, dname ? dname : domain->name);
} else {
/* This driver does not support peer to peer migration */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
} else {
/* Change protection requires support only on source side, and
* is only needed in v3 migration, which automatically re-adds
* the flag for just the source side. We mask it out for
* non-peer2peer to allow migration from newer source to an
* older destination that rejects the flag. */
if (flags & VIR_MIGRATE_CHANGE_PROTECTION &&
!VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATE_CHANGE_PROTECTION)) {
virLibConnError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("cannot enforce change protection"));
goto error;
}
flags &= ~VIR_MIGRATE_CHANGE_PROTECTION;
if (flags & VIR_MIGRATE_TUNNELLED) {
virLibConnError(VIR_ERR_OPERATION_INVALID,
_("cannot perform tunnelled migration without using peer2peer flag"));
goto error;
}
/* Check that migration is supported by both drivers. */
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V3) &&
VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
VIR_DRV_FEATURE_MIGRATION_V3)) {
VIR_DEBUG("Using migration protocol 3");
ddomain = virDomainMigrateVersion3(domain, dconn, dxml,
flags, dname, uri, bandwidth);
} else if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V2) &&
VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
VIR_DRV_FEATURE_MIGRATION_V2)) {
VIR_DEBUG("Using migration protocol 2");
if (dxml) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to change target guest XML during migration"));
goto error;
}
ddomain = virDomainMigrateVersion2(domain, dconn, flags,
dname, uri, bandwidth);
} else if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_V1) &&
VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
VIR_DRV_FEATURE_MIGRATION_V1)) {
VIR_DEBUG("Using migration protocol 1");
if (dxml) {
virLibConnError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to change target guest XML during migration"));
goto error;
}
ddomain = virDomainMigrateVersion1(domain, dconn, flags,
dname, uri, bandwidth);
} else {
/* This driver does not support any migration method */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
}
if (ddomain == NULL)
goto error;
return ddomain;
error:
virDispatchError(domain->conn);
return NULL;
}
/**
* virDomainMigrateToURI:
* @domain: a domain object
* @duri: mandatory URI for the destination host
* @flags: flags
* @dname: (optional) rename domain to this at destination
* @bandwidth: (optional) specify migration bandwidth limit in Mbps
*
* Migrate the domain object from its current host to the destination
* host given by duri.
*
* Flags may be one of more of the following:
* VIR_MIGRATE_LIVE Do not pause the VM during migration
* VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts
* VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel
* VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain
* on the destination host.
* VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the
* domain on the source host.
* VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration
* changes during the migration process (set
* automatically when supported).
*
* The operation of this API hinges on the VIR_MIGRATE_PEER2PEER flag.
* If the VIR_MIGRATE_PEER2PEER flag is NOT set, the duri parameter
* takes a hypervisor specific format. The uri_transports element of the
* hypervisor capabilities XML includes details of the supported URI
* schemes. Not all hypervisors will support this mode of migration, so
* if the VIR_MIGRATE_PEER2PEER flag is not set, then it may be necessary
* to use the alternative virDomainMigrate API providing and explicit
* virConnectPtr for the destination host.
*
* If the VIR_MIGRATE_PEER2PEER flag IS set, the duri parameter
* must be a valid libvirt connection URI, by which the source
* libvirt driver can connect to the destination libvirt.
*
* VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.
*
* If a hypervisor supports renaming domains during migration,
* the dname parameter specifies the new name for the domain.
* Setting dname to NULL keeps the domain name the same. If domain
* renaming is not supported by the hypervisor, dname must be NULL or
* else an error will be returned.
*
* The maximum bandwidth (in Mbps) that will be used to do migration
* can be specified with the bandwidth parameter. If set to 0,
* libvirt will choose a suitable default. Some hypervisors do
* not support this feature and will return an error if bandwidth
* is not 0.
*
* To see which features are supported by the current hypervisor,
* see virConnectGetCapabilities, /capabilities/host/migration_features.
*
* There are many limitations on migration imposed by the underlying
* technology - for example it may not be possible to migrate between
* different processors even with the same architecture, or between
* different types of hypervisor.
*
* Returns 0 if the migration succeeded, -1 upon error.
*/
int
virDomainMigrateToURI (virDomainPtr domain,
const char *duri,
unsigned long flags,
const char *dname,
unsigned long bandwidth)
{
VIR_DOMAIN_DEBUG(domain, "duri=%p, flags=%lx, dname=%s, bandwidth=%lu",
NULLSTR(duri), flags, NULLSTR(dname), bandwidth);
virResetLastError();
/* First checkout the source */
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (duri == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (flags & VIR_MIGRATE_PEER2PEER) {
if (VIR_DRV_SUPPORTS_FEATURE (domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_P2P)) {
VIR_DEBUG("Using peer2peer migration");
if (virDomainMigratePeer2Peer(domain, NULL, flags,
dname, duri, NULL, bandwidth) < 0)
goto error;
} else {
/* No peer to peer migration supported */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
} else {
if (VIR_DRV_SUPPORTS_FEATURE (domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_DIRECT)) {
VIR_DEBUG("Using direct migration");
if (virDomainMigrateDirect(domain, NULL, flags,
dname, duri, bandwidth) < 0)
goto error;
} else {
/* Cannot do a migration with only the perform step */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
}
return 0;
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainMigrateToURI2:
* @domain: a domain object
* @dconnuri: (optional) URI for target libvirtd if @flags includes VIR_MIGRATE_PEER2PEER
* @miguri: (optional) URI for invoking the migration, not if @flags includs VIR_MIGRATE_TUNNELLED
* @dxml: (optional) XML config for launching guest on target
* @flags: flags
* @dname: (optional) rename domain to this at destination
* @bandwidth: (optional) specify migration bandwidth limit in Mbps
*
* Migrate the domain object from its current host to the destination
* host given by duri.
*
* Flags may be one of more of the following:
* VIR_MIGRATE_LIVE Do not pause the VM during migration
* VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts
* VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel
* VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain
* on the destination host.
* VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the
* domain on the source host.
* VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration
* changes during the migration process (set
* automatically when supported).
*
* The operation of this API hinges on the VIR_MIGRATE_PEER2PEER flag.
*
* If the VIR_MIGRATE_PEER2PEER flag is set, the @dconnuri parameter
* must be a valid libvirt connection URI, by which the source
* libvirt driver can connect to the destination libvirt. If the
* VIR_MIGRATE_PEER2PEER flag is NOT set, then @dconnuri must be
* NULL.
*
* If the VIR_MIGRATE_TUNNELLED flag is NOT set, then the @miguri
* parameter allows specification of a URI to use to initiate the
* VM migration. It takes a hypervisor specific format. The uri_transports
* element of the hypervisor capabilities XML includes details of the
* supported URI schemes.
*
* VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.
*
* If a hypervisor supports changing the configuration of the guest
* during migration, the @dxml parameter specifies the new config
* for the guest. The configuration must include an identical set
* of virtual devices, to ensure a stable guest ABI across migration.
* Only parameters related to host side configuration can be
* changed in the XML. Hypervisors will validate this and refuse to
* allow migration if the provided XML would cause a change in the
* guest ABI,
*
* If a hypervisor supports renaming domains during migration,
* the dname parameter specifies the new name for the domain.
* Setting dname to NULL keeps the domain name the same. If domain
* renaming is not supported by the hypervisor, dname must be NULL or
* else an error will be returned.
*
* The maximum bandwidth (in Mbps) that will be used to do migration
* can be specified with the bandwidth parameter. If set to 0,
* libvirt will choose a suitable default. Some hypervisors do
* not support this feature and will return an error if bandwidth
* is not 0.
*
* To see which features are supported by the current hypervisor,
* see virConnectGetCapabilities, /capabilities/host/migration_features.
*
* There are many limitations on migration imposed by the underlying
* technology - for example it may not be possible to migrate between
* different processors even with the same architecture, or between
* different types of hypervisor.
*
* Returns 0 if the migration succeeded, -1 upon error.
*/
int
virDomainMigrateToURI2(virDomainPtr domain,
const char *dconnuri,
const char *miguri,
const char *dxml,
unsigned long flags,
const char *dname,
unsigned long bandwidth)
{
VIR_DOMAIN_DEBUG(domain, "dconnuri=%s, miguri=%s, dxml=%s, "
"flags=%lx, dname=%s, bandwidth=%lu",
NULLSTR(dconnuri), NULLSTR(miguri), NULLSTR(dxml),
flags, NULLSTR(dname), bandwidth);
virResetLastError();
/* First checkout the source */
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (flags & VIR_MIGRATE_PEER2PEER) {
if (VIR_DRV_SUPPORTS_FEATURE (domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_P2P)) {
VIR_DEBUG("Using peer2peer migration");
if (virDomainMigratePeer2Peer(domain, dxml, flags,
dname, dconnuri, miguri, bandwidth) < 0)
goto error;
} else {
/* No peer to peer migration supported */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
} else {
if (VIR_DRV_SUPPORTS_FEATURE (domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_MIGRATION_DIRECT)) {
VIR_DEBUG("Using direct migration");
if (virDomainMigrateDirect(domain, dxml, flags,
dname, miguri, bandwidth) < 0)
goto error;
} else {
/* Cannot do a migration with only the perform step */
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
}
return 0;
error:
virDispatchError(domain->conn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePrepare (virConnectPtr dconn,
char **cookie,
int *cookielen,
const char *uri_in,
char **uri_out,
unsigned long flags,
const char *dname,
unsigned long bandwidth)
{
VIR_DEBUG("dconn=%p, cookie=%p, cookielen=%p, uri_in=%s, uri_out=%p, "
"flags=%lx, dname=%s, bandwidth=%lu", dconn, cookie, cookielen,
NULLSTR(uri_in), uri_out, flags, NULLSTR(dname), bandwidth);
virResetLastError();
if (!VIR_IS_CONNECT (dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dconn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dconn->driver->domainMigratePrepare) {
int ret;
ret = dconn->driver->domainMigratePrepare (dconn, cookie, cookielen,
uri_in, uri_out,
flags, dname, bandwidth);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dconn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePerform (virDomainPtr domain,
const char *cookie,
int cookielen,
const char *uri,
unsigned long flags,
const char *dname,
unsigned long bandwidth)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "cookie=%p, cookielen=%d, uri=%s, flags=%lx, "
"dname=%s, bandwidth=%lu", cookie, cookielen, uri, flags,
NULLSTR(dname), bandwidth);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigratePerform) {
int ret;
ret = conn->driver->domainMigratePerform (domain, cookie, cookielen,
uri,
flags, dname, bandwidth);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
virDomainPtr
virDomainMigrateFinish (virConnectPtr dconn,
const char *dname,
const char *cookie,
int cookielen,
const char *uri,
unsigned long flags)
{
VIR_DEBUG("dconn=%p, dname=%s, cookie=%p, cookielen=%d, uri=%s, "
"flags=%lx", dconn, NULLSTR(dname), cookie, cookielen,
uri, flags);
virResetLastError();
if (!VIR_IS_CONNECT (dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (dconn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dconn->driver->domainMigrateFinish) {
virDomainPtr ret;
ret = dconn->driver->domainMigrateFinish (dconn, dname,
cookie, cookielen,
uri, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dconn);
return NULL;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePrepare2 (virConnectPtr dconn,
char **cookie,
int *cookielen,
const char *uri_in,
char **uri_out,
unsigned long flags,
const char *dname,
unsigned long bandwidth,
const char *dom_xml)
{
VIR_DEBUG("dconn=%p, cookie=%p, cookielen=%p, uri_in=%s, uri_out=%p,"
"flags=%lx, dname=%s, bandwidth=%lu, dom_xml=%s", dconn,
cookie, cookielen, uri_in, uri_out, flags, NULLSTR(dname),
bandwidth, dom_xml);
virResetLastError();
if (!VIR_IS_CONNECT (dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dconn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dconn->driver->domainMigratePrepare2) {
int ret;
ret = dconn->driver->domainMigratePrepare2 (dconn, cookie, cookielen,
uri_in, uri_out,
flags, dname, bandwidth,
dom_xml);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dconn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
virDomainPtr
virDomainMigrateFinish2 (virConnectPtr dconn,
const char *dname,
const char *cookie,
int cookielen,
const char *uri,
unsigned long flags,
int retcode)
{
VIR_DEBUG("dconn=%p, dname=%s, cookie=%p, cookielen=%d, uri=%s, "
"flags=%lx, retcode=%d", dconn, NULLSTR(dname), cookie,
cookielen, uri, flags, retcode);
virResetLastError();
if (!VIR_IS_CONNECT (dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (dconn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dconn->driver->domainMigrateFinish2) {
virDomainPtr ret;
ret = dconn->driver->domainMigrateFinish2 (dconn, dname,
cookie, cookielen,
uri, flags,
retcode);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dconn);
return NULL;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePrepareTunnel(virConnectPtr conn,
virStreamPtr st,
unsigned long flags,
const char *dname,
unsigned long bandwidth,
const char *dom_xml)
{
VIR_DEBUG("conn=%p, stream=%p, flags=%lx, dname=%s, "
"bandwidth=%lu, dom_xml=%s", conn, st, flags,
NULLSTR(dname), bandwidth, dom_xml);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn != st->conn) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigratePrepareTunnel) {
int rv = conn->driver->domainMigratePrepareTunnel(conn, st,
flags, dname,
bandwidth, dom_xml);
if (rv < 0)
goto error;
return rv;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
char *
virDomainMigrateBegin3(virDomainPtr domain,
const char *xmlin,
char **cookieout,
int *cookieoutlen,
unsigned long flags,
const char *dname,
unsigned long bandwidth)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xmlin=%s cookieout=%p, cookieoutlen=%p, "
"flags=%lx, dname=%s, bandwidth=%lu",
NULLSTR(xmlin), cookieout, cookieoutlen, flags,
NULLSTR(dname), bandwidth);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigrateBegin3) {
char *xml;
xml = conn->driver->domainMigrateBegin3(domain, xmlin,
cookieout, cookieoutlen,
flags, dname, bandwidth);
VIR_DEBUG("xml %s", NULLSTR(xml));
if (!xml)
goto error;
return xml;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return NULL;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePrepare3(virConnectPtr dconn,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
const char *uri_in,
char **uri_out,
unsigned long flags,
const char *dname,
unsigned long bandwidth,
const char *dom_xml)
{
VIR_DEBUG("dconn=%p, cookiein=%p, cookieinlen=%d, cookieout=%p, "
"cookieoutlen=%p, uri_in=%s, uri_out=%p, flags=%lx, dname=%s, "
"bandwidth=%lu, dom_xml=%s",
dconn, cookiein, cookieinlen, cookieout, cookieoutlen, uri_in,
uri_out, flags, NULLSTR(dname), bandwidth, dom_xml);
virResetLastError();
if (!VIR_IS_CONNECT (dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dconn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dconn->driver->domainMigratePrepare3) {
int ret;
ret = dconn->driver->domainMigratePrepare3(dconn,
cookiein, cookieinlen,
cookieout, cookieoutlen,
uri_in, uri_out,
flags, dname, bandwidth,
dom_xml);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dconn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePrepareTunnel3(virConnectPtr conn,
virStreamPtr st,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
unsigned long flags,
const char *dname,
unsigned long bandwidth,
const char *dom_xml)
{
VIR_DEBUG("conn=%p, stream=%p, cookiein=%p, cookieinlen=%d, cookieout=%p, "
"cookieoutlen=%p, flags=%lx, dname=%s, bandwidth=%lu, "
"dom_xml=%s",
conn, st, cookiein, cookieinlen, cookieout, cookieoutlen, flags,
NULLSTR(dname), bandwidth, dom_xml);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn != st->conn) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigratePrepareTunnel3) {
int rv = conn->driver->domainMigratePrepareTunnel3(conn, st,
cookiein, cookieinlen,
cookieout, cookieoutlen,
flags, dname,
bandwidth, dom_xml);
if (rv < 0)
goto error;
return rv;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigratePerform3(virDomainPtr domain,
const char *xmlin,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
const char *dconnuri,
const char *uri,
unsigned long flags,
const char *dname,
unsigned long bandwidth)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xmlin=%s cookiein=%p, cookieinlen=%d, "
"cookieout=%p, cookieoutlen=%p, dconnuri=%s, "
"uri=%s, flags=%lx, dname=%s, bandwidth=%lu",
NULLSTR(xmlin), cookiein, cookieinlen,
cookieout, cookieoutlen, NULLSTR(dconnuri),
NULLSTR(uri), flags, NULLSTR(dname), bandwidth);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigratePerform3) {
int ret;
ret = conn->driver->domainMigratePerform3(domain, xmlin,
cookiein, cookieinlen,
cookieout, cookieoutlen,
dconnuri, uri,
flags, dname, bandwidth);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
virDomainPtr
virDomainMigrateFinish3(virConnectPtr dconn,
const char *dname,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
const char *dconnuri,
const char *uri,
unsigned long flags,
int cancelled)
{
VIR_DEBUG("dconn=%p, dname=%s, cookiein=%p, cookieinlen=%d, cookieout=%p,"
"cookieoutlen=%p, dconnuri=%s, uri=%s, flags=%lx, retcode=%d",
dconn, NULLSTR(dname), cookiein, cookieinlen, cookieout,
cookieoutlen, NULLSTR(dconnuri), NULLSTR(uri), flags, cancelled);
virResetLastError();
if (!VIR_IS_CONNECT (dconn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (dconn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dconn->driver->domainMigrateFinish3) {
virDomainPtr ret;
ret = dconn->driver->domainMigrateFinish3(dconn, dname,
cookiein, cookieinlen,
cookieout, cookieoutlen,
dconnuri, uri, flags,
cancelled);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dconn);
return NULL;
}
/*
* Not for public use. This function is part of the internal
* implementation of migration in the remote case.
*/
int
virDomainMigrateConfirm3(virDomainPtr domain,
const char *cookiein,
int cookieinlen,
unsigned long flags,
int cancelled)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain,
"cookiein=%p, cookieinlen=%d, flags=%lx, cancelled=%d",
cookiein, cookieinlen, flags, cancelled);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigrateConfirm3) {
int ret;
ret = conn->driver->domainMigrateConfirm3(domain,
cookiein, cookieinlen,
flags, cancelled);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virNodeGetInfo:
* @conn: pointer to the hypervisor connection
* @info: pointer to a virNodeInfo structure allocated by the user
*
* Extract hardware information about the node.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNodeGetInfo(virConnectPtr conn, virNodeInfoPtr info)
{
VIR_DEBUG("conn=%p, info=%p", conn, info);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (info == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->nodeGetInfo) {
int ret;
ret = conn->driver->nodeGetInfo (conn, info);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectGetCapabilities:
* @conn: pointer to the hypervisor connection
*
* Provides capabilities of the hypervisor / driver.
*
* Returns NULL in case of error, or an XML string
* defining the capabilities.
* The client must free the returned string after use.
*/
char *
virConnectGetCapabilities (virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT (conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->driver->getCapabilities) {
char *ret;
ret = conn->driver->getCapabilities (conn);
if (!ret)
goto error;
VIR_DEBUG("conn=%p ret=%s", conn, ret);
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNodeGetCPUStats:
* @conn: pointer to the hypervisor connection.
* @cpuNum: number of node cpu. (VIR_NODE_CPU_STATS_ALL_CPUS means total cpu
* statistics)
* @params: pointer to node cpu time parameter objects
* @nparams: number of node cpu time parameter (this value should be same or
* less than the number of parameters supported)
* @flags: currently unused, for future extension. always pass 0.
*
* This function provides individual cpu statistics of the node.
* If you want to get total cpu statistics of the node, you must specify
* VIR_NODE_CPU_STATS_ALL_CPUS to @cpuNum.
* The @params array will be filled with the values equal to the number of
* parameters suggested by @nparams
*
* As the value of @nparams is dynamic, call the API setting @nparams to 0 and
* @params as NULL, the API returns the number of parameters supported by the
* HV by updating @nparams on SUCCESS. The caller should then allocate @params
* array, i.e. (sizeof(@virNodeCPUStats) * @nparams) bytes and call
* the API again.
*
* Here is a sample code snippet:
*
* if ((virNodeGetCPUStats(conn, cpuNum, NULL, &nparams, 0) == 0) &&
* (nparams != 0)) {
* if ((params = malloc(sizeof(virNodeCPUStats) * nparams)) == NULL)
* goto error;
* memset(params, 0, sizeof(virNodeCPUStats) * nparams);
* if (virNodeGetCPUStats(conn, cpuNum, params, &nparams, 0))
* goto error;
* }
*
* This function doesn't require privileged access to the hypervisor.
* This function expects the caller to allocate the @params.
*
* CPU time Statistics:
*
* VIR_NODE_CPU_STATS_KERNEL:
* The cumulative CPU time which spends by kernel,
* when the node booting up.(nanoseconds)
* VIR_NODE_CPU_STATS_USER:
* The cumulative CPU time which spends by user processes,
* when the node booting up.(nanoseconds)
* VIR_NODE_CPU_STATS_IDLE:
* The cumulative idle CPU time, when the node booting up.(nanoseconds)
* VIR_NODE_CPU_STATS_IOWAIT:
* The cumulative I/O wait CPU time, when the node booting up.(nanoseconds)
* VIR_NODE_CPU_STATS_UTILIZATION:
* The CPU utilization. The usage value is in percent and 100%
* represents all CPUs on the server.
*
* Returns -1 in case of error, 0 in case of success.
*/
int virNodeGetCPUStats (virConnectPtr conn,
int cpuNum,
virNodeCPUStatsPtr params,
int *nparams, unsigned int flags)
{
VIR_DEBUG("conn=%p, cpuNum=%d, params=%p, nparams=%d, flags=%x",
conn, cpuNum, params, nparams ? *nparams : -1, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((nparams == NULL) || (*nparams < 0) ||
((cpuNum < 0) && (cpuNum != VIR_NODE_CPU_STATS_ALL_CPUS))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->nodeGetCPUStats) {
int ret;
ret = conn->driver->nodeGetCPUStats (conn, cpuNum, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNodeGetMemoryStats:
* @conn: pointer to the hypervisor connection.
* @cellNum: number of node cell. (VIR_NODE_MEMORY_STATS_ALL_CELLS means total
* cell statistics)
* @params: pointer to node memory stats objects
* @nparams: number of node memory stats (this value should be same or
* less than the number of stats supported)
* @flags: currently unused, for future extension. always pass 0.
*
* This function provides memory stats of the node.
* If you want to get total cpu statistics of the node, you must specify
* VIR_NODE_MEMORY_STATS_ALL_CELLS to @cellNum.
* The @params array will be filled with the values equal to the number of
* stats suggested by @nparams
*
* As the value of @nparams is dynamic, call the API setting @nparams to 0 and
* @params as NULL, the API returns the number of parameters supported by the
* HV by updating @nparams on SUCCESS. The caller should then allocate @params
* array, i.e. (sizeof(@virNodeMemoryStats) * @nparams) bytes and call
* the API again.
*
* Here is the sample code snippet:
*
* if ((virNodeGetMemoryStats(conn, cellNum, NULL, &nparams, 0) == 0) &&
* (nparams != 0)) {
* if ((params = malloc(sizeof(virNodeMemoryStats) * nparams)) == NULL)
* goto error;
* memset(params, cellNum, 0, sizeof(virNodeMemoryStats) * nparams);
* if (virNodeGetMemoryStats(conn, params, &nparams, 0))
* goto error;
* }
*
* This function doesn't require privileged access to the hypervisor.
* This function expects the caller to allocate the @params.
*
* Memory Stats:
*
* VIR_NODE_MEMORY_STATS_TOTAL:
* The total memory usage.(KB)
* VIR_NODE_MEMORY_STATS_FREE:
* The free memory usage.(KB)
* On linux, this usage includes buffers and cached.
* VIR_NODE_MEMORY_STATS_BUFFERS:
* The buffers memory usage.(KB)
* VIR_NODE_MEMORY_STATS_CACHED:
* The cached memory usage.(KB)
*
* Returns -1 in case of error, 0 in case of success.
*/
int virNodeGetMemoryStats (virConnectPtr conn,
int cellNum,
virNodeMemoryStatsPtr params,
int *nparams, unsigned int flags)
{
VIR_DEBUG("conn=%p, cellNum=%d, params=%p, nparams=%d, flags=%x",
conn, cellNum, params, nparams ? *nparams : -1, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((nparams == NULL) || (*nparams < 0) ||
((cellNum < 0) && (cellNum != VIR_NODE_MEMORY_STATS_ALL_CELLS))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->nodeGetMemoryStats) {
int ret;
ret = conn->driver->nodeGetMemoryStats (conn, cellNum, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNodeGetFreeMemory:
* @conn: pointer to the hypervisor connection
*
* provides the free memory available on the Node
* Note: most libvirt APIs provide memory sizes in kilobytes, but in this
* function the returned value is in bytes. Divide by 1024 as necessary.
*
* Returns the available free memory in bytes or 0 in case of error
*/
unsigned long long
virNodeGetFreeMemory(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT (conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return 0;
}
if (conn->driver->nodeGetFreeMemory) {
unsigned long long ret;
ret = conn->driver->nodeGetFreeMemory (conn);
if (ret == 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return 0;
}
/**
* virNodeSuspendForDuration:
* @conn: pointer to the hypervisor connection
* @target: the state to which the host must be suspended to,
* such as: VIR_NODE_SUSPEND_TARGET_MEM (Suspend-to-RAM)
* VIR_NODE_SUSPEND_TARGET_DISK (Suspend-to-Disk)
* VIR_NODE_SUSPEND_TARGET_HYBRID (Hybrid-Suspend,
* which is a combination of the former modes).
* @duration: the time duration in seconds for which the host
* has to be suspended
* @flags: any flag values that might need to be passed;
* currently unused (0).
*
* Attempt to suspend the node (host machine) for the given duration of
* time in the specified state (Suspend-to-RAM, Suspend-to-Disk or
* Hybrid-Suspend). Schedule the node's Real-Time-Clock interrupt to
* resume the node after the duration is complete.
*
* Returns 0 on success (i.e., the node will be suspended after a short
* delay), -1 on failure (the operation is not supported, or an attempted
* suspend is already underway).
*/
int
virNodeSuspendForDuration(virConnectPtr conn,
unsigned int target,
unsigned long long duration,
unsigned int flags)
{
VIR_DEBUG("conn=%p, target=%d, duration=%lld", conn, target, duration);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->nodeSuspendForDuration) {
int ret;
ret = conn->driver->nodeSuspendForDuration(conn, target,
duration, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainGetSchedulerType:
* @domain: pointer to domain object
* @nparams: pointer to number of scheduler parameters, can be NULL
* (return value)
*
* Get the scheduler type and the number of scheduler parameters.
*
* Returns NULL in case of error. The caller must free the returned string.
*/
char *
virDomainGetSchedulerType(virDomainPtr domain, int *nparams)
{
virConnectPtr conn;
char *schedtype;
VIR_DOMAIN_DEBUG(domain, "nparams=%p", nparams);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if (conn->driver->domainGetSchedulerType){
schedtype = conn->driver->domainGetSchedulerType (domain, nparams);
if (!schedtype)
goto error;
return schedtype;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return NULL;
}
/**
* virDomainGetSchedulerParameters:
* @domain: pointer to domain object
* @params: pointer to scheduler parameter objects
* (return value)
* @nparams: pointer to number of scheduler parameter objects
* (this value should generally be as large as the returned value
* nparams of virDomainGetSchedulerType()); input and output
*
* Get all scheduler parameters. On input, @nparams gives the size of the
* @params array; on output, @nparams gives how many slots were filled
* with parameter information, which might be less but will not exceed
* the input value. @nparams cannot be 0.
*
* It is hypervisor specific whether this returns the live or
* persistent state; for more control, use
* virDomainGetSchedulerParametersFlags().
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainGetSchedulerParameters(virDomainPtr domain,
virTypedParameterPtr params, int *nparams)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%p", params, nparams);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (params == NULL || nparams == NULL || *nparams <= 0) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetSchedulerParameters) {
int ret;
ret = conn->driver->domainGetSchedulerParameters (domain, params, nparams);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetSchedulerParametersFlags:
* @domain: pointer to domain object
* @params: pointer to scheduler parameter object
* (return value)
* @nparams: pointer to number of scheduler parameter
* (this value should be same than the returned value
* nparams of virDomainGetSchedulerType()); input and output
* @flags: bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
*
* Get all scheduler parameters. On input, @nparams gives the size of the
* @params array; on output, @nparams gives how many slots were filled
* with parameter information, which might be less but will not exceed
* the input value. @nparams cannot be 0.
*
* The value of @flags can be exactly VIR_DOMAIN_AFFECT_CURRENT,
* VIR_DOMAIN_AFFECT_LIVE, or VIR_DOMAIN_AFFECT_CONFIG.
*
* Here is a sample code snippet:
*
* char *ret = virDomainGetSchedulerType(dom, &nparams);
* if (ret && nparams != 0) {
* if ((params = malloc(sizeof(*params) * nparams)) == NULL)
* goto error;
* memset(params, 0, sizeof(*params) * nparams);
* if (virDomainGetSchedulerParametersFlags(dom, params, &nparams, 0))
* goto error;
* }
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainGetSchedulerParametersFlags(virDomainPtr domain,
virTypedParameterPtr params, int *nparams,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%p, flags=%x",
params, nparams, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (params == NULL || nparams == NULL || *nparams <= 0) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
VIR_DRV_FEATURE_TYPED_PARAM_STRING))
flags |= VIR_TYPED_PARAM_STRING_OKAY;
conn = domain->conn;
if (conn->driver->domainGetSchedulerParametersFlags) {
int ret;
ret = conn->driver->domainGetSchedulerParametersFlags (domain, params,
nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetSchedulerParameters:
* @domain: pointer to domain object
* @params: pointer to scheduler parameter objects
* @nparams: number of scheduler parameter objects
* (this value can be the same or less than the returned value
* nparams of virDomainGetSchedulerType)
*
* Change all or a subset or the scheduler parameters. It is
* hypervisor-specific whether this sets live, persistent, or both
* settings; for more control, use
* virDomainSetSchedulerParametersFlags.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainSetSchedulerParameters(virDomainPtr domain,
virTypedParameterPtr params, int nparams)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%d", params, nparams);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (params == NULL || nparams < 0) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virTypedParameterValidateSet(domain, params, nparams) < 0)
return -1;
conn = domain->conn;
if (conn->driver->domainSetSchedulerParameters) {
int ret;
ret = conn->driver->domainSetSchedulerParameters (domain, params, nparams);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetSchedulerParametersFlags:
* @domain: pointer to domain object
* @params: pointer to scheduler parameter objects
* @nparams: number of scheduler parameter objects
* (this value can be the same or less than the returned value
* nparams of virDomainGetSchedulerType)
* @flags: bitwise-OR of virDomainModificationImpact
*
* Change a subset or all scheduler parameters. The value of @flags
* should be either VIR_DOMAIN_AFFECT_CURRENT, or a bitwise-or of
* values from VIR_DOMAIN_AFFECT_LIVE and
* VIR_DOMAIN_AFFECT_CURRENT, although hypervisors vary in which
* flags are supported.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainSetSchedulerParametersFlags(virDomainPtr domain,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "params=%p, nparams=%d, flags=%x",
params, nparams, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (params == NULL || nparams < 0) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virTypedParameterValidateSet(domain, params, nparams) < 0)
return -1;
conn = domain->conn;
if (conn->driver->domainSetSchedulerParametersFlags) {
int ret;
ret = conn->driver->domainSetSchedulerParametersFlags(domain,
params,
nparams,
flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainBlockStats:
* @dom: pointer to the domain object
* @disk: path to the block device, or device shorthand
* @stats: block device stats (returned)
* @size: size of stats structure
*
* This function returns block device (disk) stats for block
* devices attached to the domain.
*
* The @disk parameter is either the device target shorthand (the
* <target dev='...'/> sub-element, such as "xvda"), or (since 0.9.8)
* an unambiguous source name of the block device (the <source
* file='...'/> sub-element, such as "/path/to/image"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Domains may have more than one block device. To get stats for
* each you should make multiple calls to this function.
*
* Individual fields within the stats structure may be returned
* as -1, which indicates that the hypervisor does not support
* that particular statistic.
*
* Returns: 0 in case of success or -1 in case of failure.
*/
int
virDomainBlockStats(virDomainPtr dom, const char *disk,
virDomainBlockStatsPtr stats, size_t size)
{
virConnectPtr conn;
struct _virDomainBlockStats stats2 = { -1, -1, -1, -1, -1 };
VIR_DOMAIN_DEBUG(dom, "disk=%s, stats=%p, size=%zi", disk, stats, size);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!disk || !stats || size > sizeof stats2) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = dom->conn;
if (conn->driver->domainBlockStats) {
if (conn->driver->domainBlockStats (dom, disk, &stats2) == -1)
goto error;
memcpy (stats, &stats2, size);
return 0;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainBlockStatsFlags:
* @dom: pointer to domain object
* @disk: path to the block device, or device shorthand
* @params: pointer to block stats parameter object
* (return value)
* @nparams: pointer to number of block stats; input and output
* @flags: bitwise-OR of virTypedParameterFlags
*
* This function is to get block stats parameters for block
* devices attached to the domain.
*
* The @disk parameter is either the device target shorthand (the
* <target dev='...'/> sub-element, such as "xvda"), or (since 0.9.8)
* an unambiguous source name of the block device (the <source
* file='...'/> sub-element, such as "/path/to/image"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Domains may have more than one block device. To get stats for
* each you should make multiple calls to this function.
*
* On input, @nparams gives the size of the @params array; on output,
* @nparams gives how many slots were filled with parameter
* information, which might be less but will not exceed the input
* value.
*
* As a special case, calling with @params as NULL and @nparams as 0 on
* input will cause @nparams on output to contain the number of parameters
* supported by the hypervisor. (Note that block devices of different types
* might support different parameters, so it might be necessary to compute
* @nparams for each block device). The caller should then allocate @params
* array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API
* again. See virDomainGetMemoryParameters() for more details.
*
* Returns -1 in case of error, 0 in case of success.
*/
int virDomainBlockStatsFlags(virDomainPtr dom,
const char *disk,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%s, params=%p, nparams=%d, flags=%x",
disk, params, nparams ? *nparams : -1, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!disk || (nparams == NULL) || (*nparams < 0) ||
(params == NULL && *nparams != 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (VIR_DRV_SUPPORTS_FEATURE(dom->conn->driver, dom->conn,
VIR_DRV_FEATURE_TYPED_PARAM_STRING))
flags |= VIR_TYPED_PARAM_STRING_OKAY;
conn = dom->conn;
if (conn->driver->domainBlockStatsFlags) {
int ret;
ret = conn->driver->domainBlockStatsFlags(dom, disk, params, nparams, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainInterfaceStats:
* @dom: pointer to the domain object
* @path: path to the interface
* @stats: network interface stats (returned)
* @size: size of stats structure
*
* This function returns network interface stats for interfaces
* attached to the domain.
*
* The path parameter is the name of the network interface.
*
* Domains may have more than one network interface. To get stats for
* each you should make multiple calls to this function.
*
* Individual fields within the stats structure may be returned
* as -1, which indicates that the hypervisor does not support
* that particular statistic.
*
* Returns: 0 in case of success or -1 in case of failure.
*/
int
virDomainInterfaceStats (virDomainPtr dom, const char *path,
virDomainInterfaceStatsPtr stats, size_t size)
{
virConnectPtr conn;
struct _virDomainInterfaceStats stats2 = { -1, -1, -1, -1,
-1, -1, -1, -1 };
VIR_DOMAIN_DEBUG(dom, "path=%s, stats=%p, size=%zi",
path, stats, size);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!path || !stats || size > sizeof stats2) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = dom->conn;
if (conn->driver->domainInterfaceStats) {
if (conn->driver->domainInterfaceStats (dom, path, &stats2) == -1)
goto error;
memcpy (stats, &stats2, size);
return 0;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainMemoryStats:
* @dom: pointer to the domain object
* @stats: nr_stats-sized array of stat structures (returned)
* @nr_stats: number of memory statistics requested
* @flags: unused, always pass 0
*
* This function provides memory statistics for the domain.
*
* Up to 'nr_stats' elements of 'stats' will be populated with memory statistics
* from the domain. Only statistics supported by the domain, the driver, and
* this version of libvirt will be returned.
*
* Memory Statistics:
*
* VIR_DOMAIN_MEMORY_STAT_SWAP_IN:
* The total amount of data read from swap space (in kb).
* VIR_DOMAIN_MEMORY_STAT_SWAP_OUT:
* The total amount of memory written out to swap space (in kb).
* VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT:
* The number of page faults that required disk IO to service.
* VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT:
* The number of page faults serviced without disk IO.
* VIR_DOMAIN_MEMORY_STAT_UNUSED:
* The amount of memory which is not being used for any purpose (in kb).
* VIR_DOMAIN_MEMORY_STAT_AVAILABLE:
* The total amount of memory available to the domain's OS (in kb).
* VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON:
* Current balloon value (in kb).
*
* Returns: The number of stats provided or -1 in case of failure.
*/
int virDomainMemoryStats (virDomainPtr dom, virDomainMemoryStatPtr stats,
unsigned int nr_stats, unsigned int flags)
{
virConnectPtr conn;
unsigned long nr_stats_ret = 0;
VIR_DOMAIN_DEBUG(dom, "stats=%p, nr_stats=%u, flags=%x",
stats, nr_stats, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!stats || nr_stats == 0)
return 0;
if (nr_stats > VIR_DOMAIN_MEMORY_STAT_NR)
nr_stats = VIR_DOMAIN_MEMORY_STAT_NR;
conn = dom->conn;
if (conn->driver->domainMemoryStats) {
nr_stats_ret = conn->driver->domainMemoryStats (dom, stats, nr_stats,
flags);
if (nr_stats_ret == -1)
goto error;
return nr_stats_ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainBlockPeek:
* @dom: pointer to the domain object
* @disk: path to the block device, or device shorthand
* @offset: offset within block device
* @size: size to read
* @buffer: return buffer (must be at least size bytes)
* @flags: unused, always pass 0
*
* This function allows you to read the contents of a domain's
* disk device.
*
* Typical uses for this are to determine if the domain has
* written a Master Boot Record (indicating that the domain
* has completed installation), or to try to work out the state
* of the domain's filesystems.
*
* (Note that in the local case you might try to open the
* block device or file directly, but that won't work in the
* remote case, nor if you don't have sufficient permission.
* Hence the need for this call).
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* 'offset' and 'size' represent an area which must lie entirely
* within the device or file. 'size' may be 0 to test if the
* call would succeed.
*
* 'buffer' is the return buffer and must be at least 'size' bytes.
*
* NB. The remote driver imposes a 64K byte limit on 'size'.
* For your program to be able to work reliably over a remote
* connection you should split large requests to <= 65536 bytes.
*
* Returns: 0 in case of success or -1 in case of failure.
*/
int
virDomainBlockPeek (virDomainPtr dom,
const char *disk,
unsigned long long offset /* really 64 bits */,
size_t size,
void *buffer,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%s, offset=%lld, size=%zi, buffer=%p, flags=%x",
disk, offset, size, buffer, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!disk) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("disk is NULL"));
goto error;
}
/* Allow size == 0 as an access test. */
if (size > 0 && !buffer) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("buffer is NULL"));
goto error;
}
if (conn->driver->domainBlockPeek) {
int ret;
ret = conn->driver->domainBlockPeek(dom, disk, offset, size,
buffer, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainBlockResize:
* @dom: pointer to the domain object
* @disk: path to the block image, or shorthand
* @size: new size of the block image in kilobytes
* @flags: unused, always pass 0
*
* Note that this call may fail if the underlying virtualization hypervisor
* does not support it. And this call requires privileged access to the
* hypervisor.
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Resize a block device of domain while the domain is running.
*
* Returns: 0 in case of success or -1 in case of failure.
*/
int
virDomainBlockResize (virDomainPtr dom,
const char *disk,
unsigned long long size,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%s, size=%llu, flags=%x", disk, size, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!disk) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("disk is NULL"));
goto error;
}
if (conn->driver->domainBlockResize) {
int ret;
ret =conn->driver->domainBlockResize(dom, disk, size, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainMemoryPeek:
* @dom: pointer to the domain object
* @start: start of memory to peek
* @size: size of memory to peek
* @buffer: return buffer (must be at least size bytes)
* @flags: flags, see below
*
* This function allows you to read the contents of a domain's
* memory.
*
* The memory which is read is controlled by the 'start', 'size'
* and 'flags' parameters.
*
* If 'flags' is VIR_MEMORY_VIRTUAL then the 'start' and 'size'
* parameters are interpreted as virtual memory addresses for
* whichever task happens to be running on the domain at the
* moment. Although this sounds haphazard it is in fact what
* you want in order to read Linux kernel state, because it
* ensures that pointers in the kernel image can be interpreted
* coherently.
*
* 'buffer' is the return buffer and must be at least 'size' bytes.
* 'size' may be 0 to test if the call would succeed.
*
* NB. The remote driver imposes a 64K byte limit on 'size'.
* For your program to be able to work reliably over a remote
* connection you should split large requests to <= 65536 bytes.
*
* Returns: 0 in case of success or -1 in case of failure.
*/
int
virDomainMemoryPeek (virDomainPtr dom,
unsigned long long start /* really 64 bits */,
size_t size,
void *buffer,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "start=%lld, size=%zi, buffer=%p, flags=%x",
start, size, buffer, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
/* Note on access to physical memory: A VIR_MEMORY_PHYSICAL flag is
* a possibility. However it isn't really useful unless the caller
* can also access registers, particularly CR3 on x86 in order to
* get the Page Table Directory. Since registers are different on
* every architecture, that would imply another call to get the
* machine registers.
*
* The QEMU driver handles VIR_MEMORY_VIRTUAL, mapping it
* to the qemu 'memsave' command which does the virtual to physical
* mapping inside qemu.
*
* The QEMU driver also handles VIR_MEMORY_PHYSICAL, mapping it
* to the qemu 'pmemsave' command.
*
* At time of writing there is no Xen driver. However the Xen
* hypervisor only lets you map physical pages from other domains,
* and so the Xen driver would have to do the virtual to physical
* mapping by chasing 2, 3 or 4-level page tables from the PTD.
* There is example code in libxc (xc_translate_foreign_address)
* which does this, although we cannot copy this code directly
* because of incompatible licensing.
*/
/* Exactly one of these two flags must be set. */
if (!(flags & VIR_MEMORY_VIRTUAL) == !(flags & VIR_MEMORY_PHYSICAL)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("flags parameter must include VIR_MEMORY_VIRTUAL or VIR_MEMORY_PHYSICAL"));
goto error;
}
/* Allow size == 0 as an access test. */
if (size > 0 && !buffer) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("buffer is NULL but size is non-zero"));
goto error;
}
if (conn->driver->domainMemoryPeek) {
int ret;
ret = conn->driver->domainMemoryPeek (dom, start, size,
buffer, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainGetBlockInfo:
* @domain: a domain object
* @disk: path to the block device, or device shorthand
* @info: pointer to a virDomainBlockInfo structure allocated by the user
* @flags: currently unused, pass zero
*
* Extract information about a domain's block device.
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainGetBlockInfo(virDomainPtr domain, const char *disk,
virDomainBlockInfoPtr info, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "info=%p, flags=%x", info, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (disk == NULL || info == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memset(info, 0, sizeof(virDomainBlockInfo));
conn = domain->conn;
if (conn->driver->domainGetBlockInfo) {
int ret;
ret = conn->driver->domainGetBlockInfo (domain, disk, info, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/************************************************************************
* *
* Handling of defined but not running domains *
* *
************************************************************************/
/**
* virDomainDefineXML:
* @conn: pointer to the hypervisor connection
* @xml: the XML description for the domain, preferably in UTF-8
*
* Define a domain, but does not start it.
* This definition is persistent, until explicitly undefined with
* virDomainUndefine(). A previous definition for this domain would be
* overriden if it already exists.
*
* Returns NULL in case of error, a pointer to the domain otherwise
*/
virDomainPtr
virDomainDefineXML(virConnectPtr conn, const char *xml) {
VIR_DEBUG("conn=%p, xml=%s", conn, xml);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (xml == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainDefineXML) {
virDomainPtr ret;
ret = conn->driver->domainDefineXML (conn, xml);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainUndefine:
* @domain: pointer to a defined domain
*
* Undefine a domain. If the domain is running, it's converted to
* transient domain, without stopping it. If the domain is inactive,
* the domain configuration is removed.
*
* If the domain has a managed save image (see
* virDomainHasManagedSaveImage()), or if it is inactive and has any
* snapshot metadata (see virDomainSnapshotNum()), then the undefine will
* fail. See virDomainUndefineFlags() for more control.
*
* Returns 0 in case of success, -1 in case of error
*/
int
virDomainUndefine(virDomainPtr domain) {
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainUndefine) {
int ret;
ret = conn->driver->domainUndefine (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainUndefineFlags:
* @domain: pointer to a defined domain
* @flags: bitwise-or of supported virDomainUndefineFlagsValues
*
* Undefine a domain. If the domain is running, it's converted to
* transient domain, without stopping it. If the domain is inactive,
* the domain configuration is removed.
*
* If the domain has a managed save image (see virDomainHasManagedSaveImage()),
* then including VIR_DOMAIN_UNDEFINE_MANAGED_SAVE in @flags will also remove
* that file, and omitting the flag will cause the undefine process to fail.
*
* If the domain is inactive and has any snapshot metadata (see
* virDomainSnapshotNum()), then including
* VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA in @flags will also remove
* that metadata. Omitting the flag will cause the undefine of an
* inactive domain to fail. Active snapshots will retain snapshot
* metadata until the (now-transient) domain halts, regardless of
* whether this flag is present. On hypervisors where snapshots do
* not use libvirt metadata, this flag has no effect.
*
* Returns 0 in case of success, -1 in case of error
*/
int
virDomainUndefineFlags(virDomainPtr domain,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainUndefineFlags) {
int ret;
ret = conn->driver->domainUndefineFlags (domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virConnectNumOfDefinedDomains:
* @conn: pointer to the hypervisor connection
*
* Provides the number of defined but inactive domains.
*
* Returns the number of domain found or -1 in case of error
*/
int
virConnectNumOfDefinedDomains(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->driver->numOfDefinedDomains) {
int ret;
ret = conn->driver->numOfDefinedDomains (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListDefinedDomains:
* @conn: pointer to the hypervisor connection
* @names: pointer to an array to store the names
* @maxnames: size of the array
*
* list the defined but inactive domains, stores the pointers to the names
* in @names
*
* Returns the number of names provided in the array or -1 in case of error
*/
int
virConnectListDefinedDomains(virConnectPtr conn, char **const names,
int maxnames) {
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->listDefinedDomains) {
int ret;
ret = conn->driver->listDefinedDomains (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainCreate:
* @domain: pointer to a defined domain
*
* Launch a defined domain. If the call succeeds the domain moves from the
* defined to the running domains pools. The domain will be paused only
* if restoring from managed state created from a paused domain. For more
* control, see virDomainCreateWithFlags().
*
* Returns 0 in case of success, -1 in case of error
*/
int
virDomainCreate(virDomainPtr domain) {
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainCreate) {
int ret;
ret = conn->driver->domainCreate (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainCreateWithFlags:
* @domain: pointer to a defined domain
* @flags: bitwise-or of supported virDomainCreateFlags
*
* Launch a defined domain. If the call succeeds the domain moves from the
* defined to the running domains pools.
*
* If the VIR_DOMAIN_START_PAUSED flag is set, or if the guest domain
* has a managed save image that requested paused state (see
* virDomainManagedSave()) the guest domain will be started, but its
* CPUs will remain paused. The CPUs can later be manually started
* using virDomainResume(). In all other cases, the guest domain will
* be running.
*
* If the VIR_DOMAIN_START_AUTODESTROY flag is set, the guest
* domain will be automatically destroyed when the virConnectPtr
* object is finally released. This will also happen if the
* client application crashes / loses its connection to the
* libvirtd daemon. Any domains marked for auto destroy will
* block attempts at migration, save-to-file, or snapshots.
*
* If the VIR_DOMAIN_START_BYPASS_CACHE flag is set, and there is a
* managed save file for this domain (created by virDomainManagedSave()),
* then libvirt will attempt to bypass the file system cache while restoring
* the file, or fail if it cannot do so for the given system; this can allow
* less pressure on file system cache, but also risks slowing loads from NFS.
*
* If the VIR_DOMAIN_START_FORCE_BOOT flag is set, then any managed save
* file for this domain is discarded, and the domain boots from scratch.
*
* Returns 0 in case of success, -1 in case of error
*/
int
virDomainCreateWithFlags(virDomainPtr domain, unsigned int flags) {
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainCreateWithFlags) {
int ret;
ret = conn->driver->domainCreateWithFlags (domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetAutostart:
* @domain: a domain object
* @autostart: the value returned
*
* Provides a boolean value indicating whether the domain
* configured to be automatically started when the host
* machine boots.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virDomainGetAutostart(virDomainPtr domain,
int *autostart)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "autostart=%p", autostart);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!autostart) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetAutostart) {
int ret;
ret = conn->driver->domainGetAutostart (domain, autostart);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetAutostart:
* @domain: a domain object
* @autostart: whether the domain should be automatically started 0 or 1
*
* Configure the domain to be automatically started
* when the host machine boots.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virDomainSetAutostart(virDomainPtr domain,
int autostart)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "autostart=%d", autostart);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainSetAutostart) {
int ret;
ret = conn->driver->domainSetAutostart (domain, autostart);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainInjectNMI:
* @domain: pointer to domain object, or NULL for Domain0
* @flags: the flags for controlling behavior, pass 0 for now
*
* Send NMI to the guest
*
* Returns 0 in case of success, -1 in case of failure.
*/
int virDomainInjectNMI(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainInjectNMI) {
int ret;
ret = conn->driver->domainInjectNMI(domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError (VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSendKey:
* @domain: pointer to domain object, or NULL for Domain0
* @codeset: the code set of keycodes, from virKeycodeSet
* @holdtime: the duration (in milliseconds) that the keys will be held
* @keycodes: array of keycodes
* @nkeycodes: number of keycodes, up to VIR_DOMAIN_SEND_KEY_MAX_KEYS
* @flags: the flags for controlling behavior, pass 0 for now
*
* Send key(s) to the guest.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int virDomainSendKey(virDomainPtr domain,
unsigned int codeset,
unsigned int holdtime,
unsigned int *keycodes,
int nkeycodes,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "codeset=%u, holdtime=%u, nkeycodes=%u, flags=%x",
codeset, holdtime, nkeycodes, flags);
virResetLastError();
if (keycodes == NULL ||
nkeycodes <= 0 || nkeycodes > VIR_DOMAIN_SEND_KEY_MAX_KEYS) {
virLibDomainError(VIR_ERR_OPERATION_INVALID, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSendKey) {
int ret;
ret = conn->driver->domainSendKey(domain, codeset, holdtime,
keycodes, nkeycodes, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError (VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetVcpus:
* @domain: pointer to domain object, or NULL for Domain0
* @nvcpus: the new number of virtual CPUs for this domain
*
* Dynamically change the number of virtual CPUs used by the domain.
* Note that this call may fail if the underlying virtualization hypervisor
* does not support it or if growing the number is arbitrary limited.
* This function may require privileged access to the hypervisor.
*
* This command only changes the runtime configuration of the domain,
* so can only be called on an active domain. It is hypervisor-dependent
* whether it also affects persistent configuration; for more control,
* use virDomainSetVcpusFlags().
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainSetVcpus(virDomainPtr domain, unsigned int nvcpus)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "nvcpus=%u", nvcpus);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (nvcpus < 1) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSetVcpus) {
int ret;
ret = conn->driver->domainSetVcpus (domain, nvcpus);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainSetVcpusFlags:
* @domain: pointer to domain object, or NULL for Domain0
* @nvcpus: the new number of virtual CPUs for this domain, must be at least 1
* @flags: an OR'ed set of virDomainVcpuFlags
*
* Dynamically change the number of virtual CPUs used by the domain.
* Note that this call may fail if the underlying virtualization hypervisor
* does not support it or if growing the number is arbitrary limited.
* This function may require privileged access to the hypervisor.
*
* @flags may include VIR_DOMAIN_AFFECT_LIVE to affect a running
* domain (which may fail if domain is not active), or
* VIR_DOMAIN_AFFECT_CONFIG to affect the next boot via the XML
* description of the domain. Both flags may be set.
* If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT),
* then an inactive domain modifies persistent setup, while an active domain
* is hypervisor-dependent on whether just live or both live and persistent
* state is changed.
*
* If @flags includes VIR_DOMAIN_VCPU_MAXIMUM, then
* VIR_DOMAIN_AFFECT_LIVE must be clear, and only the maximum virtual
* CPU limit is altered; generally, this value must be less than or
* equal to virConnectGetMaxVcpus(). Otherwise, this call affects the
* current virtual CPU limit, which must be less than or equal to the
* maximum limit.
* Not all hypervisors can support all flag combinations.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainSetVcpusFlags(virDomainPtr domain, unsigned int nvcpus,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "nvcpus=%u, flags=%x", nvcpus, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
/* Perform some argument validation common to all implementations. */
if (nvcpus < 1 || (unsigned short) nvcpus != nvcpus) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainSetVcpusFlags) {
int ret;
ret = conn->driver->domainSetVcpusFlags (domain, nvcpus, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetVcpusFlags:
* @domain: pointer to domain object, or NULL for Domain0
* @flags: an OR'ed set of virDomainVcpuFlags
*
* Query the number of virtual CPUs used by the domain. Note that
* this call may fail if the underlying virtualization hypervisor does
* not support it. This function may require privileged access to the
* hypervisor.
*
* If @flags includes VIR_DOMAIN_AFFECT_LIVE, this will query a
* running domain (which will fail if domain is not active); if
* it includes VIR_DOMAIN_AFFECT_CONFIG, this will query the XML
* description of the domain. It is an error to set both flags.
* If neither flag is set (that is, VIR_DOMAIN_AFFECT_CURRENT),
* then the configuration queried depends on whether the domain
* is currently running.
*
* If @flags includes VIR_DOMAIN_VCPU_MAXIMUM, then the maximum
* virtual CPU limit is queried. Otherwise, this call queries the
* current virtual CPU limit.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainGetVcpusFlags(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
/* At most one of these two flags should be set. */
if ((flags & VIR_DOMAIN_AFFECT_LIVE) && (flags & VIR_DOMAIN_AFFECT_CONFIG)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetVcpusFlags) {
int ret;
ret = conn->driver->domainGetVcpusFlags (domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainPinVcpu:
* @domain: pointer to domain object, or NULL for Domain0
* @vcpu: virtual CPU number
* @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes) (IN)
* Each bit set to 1 means that corresponding CPU is usable.
* Bytes are stored in little-endian order: CPU0-7, 8-15...
* In each byte, lowest CPU number is least significant bit.
* @maplen: number of bytes in cpumap, from 1 up to size of CPU map in
* underlying virtualization system (Xen...).
* If maplen < size, missing bytes are set to zero.
* If maplen > size, failure code is returned.
*
* Dynamically change the real CPUs which can be allocated to a virtual CPU.
* This function may require privileged access to the hypervisor.
*
* This command only changes the runtime configuration of the domain,
* so can only be called on an active domain.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainPinVcpu(virDomainPtr domain, unsigned int vcpu,
unsigned char *cpumap, int maplen)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "vcpu=%u, cpumap=%p, maplen=%d",
vcpu, cpumap, maplen);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((vcpu > 32000) || (cpumap == NULL) || (maplen < 1)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainPinVcpu) {
int ret;
ret = conn->driver->domainPinVcpu (domain, vcpu, cpumap, maplen);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainPinVcpuFlags:
* @domain: pointer to domain object, or NULL for Domain0
* @vcpu: virtual CPU number
* @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes) (IN)
* Each bit set to 1 means that corresponding CPU is usable.
* Bytes are stored in little-endian order: CPU0-7, 8-15...
* In each byte, lowest CPU number is least significant bit.
* @maplen: number of bytes in cpumap, from 1 up to size of CPU map in
* underlying virtualization system (Xen...).
* If maplen < size, missing bytes are set to zero.
* If maplen > size, failure code is returned.
* @flags: bitwise-OR of virDomainModificationImpac
*
* Dynamically change the real CPUs which can be allocated to a virtual CPU.
* This function may require privileged access to the hypervisor.
*
* @flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG.
* Both flags may be set.
* If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain
* and may fail if domain is not alive.
* If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state,
* and will fail for transient domains. If neither flag is specified (that is,
* @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies
* persistent setup, while an active domain is hypervisor-dependent on whether
* just live or both live and persistent state is changed.
* Not all hypervisors can support all flag combinations.
*
* See also virDomainGetVcpuPinInfo for querying this information.
*
* Returns 0 in case of success, -1 in case of failure.
*
*/
int
virDomainPinVcpuFlags(virDomainPtr domain, unsigned int vcpu,
unsigned char *cpumap, int maplen, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "vcpu=%u, cpumap=%p, maplen=%d, flags=%x",
vcpu, cpumap, maplen, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((vcpu > 32000) || (cpumap == NULL) || (maplen < 1)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainPinVcpuFlags) {
int ret;
ret = conn->driver->domainPinVcpuFlags (domain, vcpu, cpumap, maplen, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetVcpuPinInfo:
* @domain: pointer to domain object, or NULL for Domain0
* @ncpumaps: the number of cpumap (listed first to match virDomainGetVcpus)
* @cpumaps: pointer to a bit map of real CPUs for all vcpus of this
* domain (in 8-bit bytes) (OUT)
* It's assumed there is <ncpumaps> cpumap in cpumaps array.
* The memory allocated to cpumaps must be (ncpumaps * maplen) bytes
* (ie: calloc(ncpumaps, maplen)).
* One cpumap inside cpumaps has the format described in
* virDomainPinVcpu() API.
* Must not be NULL.
* @maplen: the number of bytes in one cpumap, from 1 up to size of CPU map.
* Must be positive.
* @flags: an OR'ed set of virDomainModificationImpact
* Must not be VIR_DOMAIN_AFFECT_LIVE and
* VIR_DOMAIN_AFFECT_CONFIG concurrently.
*
* Query the CPU affinity setting of all virtual CPUs of domain, store it
* in cpumaps.
*
* Returns the number of virtual CPUs in case of success,
* -1 in case of failure.
*/
int
virDomainGetVcpuPinInfo (virDomainPtr domain, int ncpumaps,
unsigned char *cpumaps, int maplen, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "ncpumaps=%d, cpumaps=%p, maplen=%d, flags=%x",
ncpumaps, cpumaps, maplen, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (ncpumaps < 1 || !cpumaps || maplen <= 0 ||
INT_MULTIPLY_OVERFLOW(ncpumaps, maplen)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetVcpuPinInfo) {
int ret;
ret = conn->driver->domainGetVcpuPinInfo (domain, ncpumaps,
cpumaps, maplen, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetVcpus:
* @domain: pointer to domain object, or NULL for Domain0
* @info: pointer to an array of virVcpuInfo structures (OUT)
* @maxinfo: number of structures in info array
* @cpumaps: pointer to a bit map of real CPUs for all vcpus of this
* domain (in 8-bit bytes) (OUT)
* If cpumaps is NULL, then no cpumap information is returned by the API.
* It's assumed there is <maxinfo> cpumap in cpumaps array.
* The memory allocated to cpumaps must be (maxinfo * maplen) bytes
* (ie: calloc(maxinfo, maplen)).
* One cpumap inside cpumaps has the format described in
* virDomainPinVcpu() API.
* @maplen: number of bytes in one cpumap, from 1 up to size of CPU map in
* underlying virtualization system (Xen...).
* Must be zero when cpumaps is NULL and positive when it is non-NULL.
*
* Extract information about virtual CPUs of domain, store it in info array
* and also in cpumaps if this pointer isn't NULL. This call may fail
* on an inactive domain.
*
* See also virDomainGetVcpuPinInfo for querying just cpumaps, including on
* an inactive domain.
*
* Returns the number of info filled in case of success, -1 in case of failure.
*/
int
virDomainGetVcpus(virDomainPtr domain, virVcpuInfoPtr info, int maxinfo,
unsigned char *cpumaps, int maplen)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "info=%p, maxinfo=%d, cpumaps=%p, maplen=%d",
info, maxinfo, cpumaps, maplen);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((info == NULL) || (maxinfo < 1)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
/* Ensure that domainGetVcpus (aka remoteDomainGetVcpus) does not
try to memcpy anything into a NULL pointer. */
if (!cpumaps ? maplen != 0
: (maplen <= 0 || INT_MULTIPLY_OVERFLOW(maxinfo, maplen))) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetVcpus) {
int ret;
ret = conn->driver->domainGetVcpus (domain, info, maxinfo,
cpumaps, maplen);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetMaxVcpus:
* @domain: pointer to domain object
*
* Provides the maximum number of virtual CPUs supported for
* the guest VM. If the guest is inactive, this is basically
* the same as virConnectGetMaxVcpus(). If the guest is running
* this will reflect the maximum number of virtual CPUs the
* guest was booted with. For more details, see virDomainGetVcpusFlags().
*
* Returns the maximum of virtual CPU or -1 in case of error.
*/
int
virDomainGetMaxVcpus(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->driver->domainGetMaxVcpus) {
int ret;
ret = conn->driver->domainGetMaxVcpus (domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetSecurityLabel:
* @domain: a domain object
* @seclabel: pointer to a virSecurityLabel structure
*
* Extract security label of an active domain. The 'label' field
* in the @seclabel argument will be initialized to the empty
* string if the domain is not running under a security model.
*
* Returns 0 in case of success, -1 in case of failure
*/
int
virDomainGetSecurityLabel(virDomainPtr domain, virSecurityLabelPtr seclabel)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "seclabel=%p", seclabel);
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (seclabel == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainGetSecurityLabel) {
int ret;
ret = conn->driver->domainGetSecurityLabel(domain, seclabel);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virNodeGetSecurityModel:
* @conn: a connection object
* @secmodel: pointer to a virSecurityModel structure
*
* Extract the security model of a hypervisor. The 'model' field
* in the @secmodel argument may be initialized to the empty
* string if the driver has not activated a security model.
*
* Returns 0 in case of success, -1 in case of failure
*/
int
virNodeGetSecurityModel(virConnectPtr conn, virSecurityModelPtr secmodel)
{
VIR_DEBUG("conn=%p secmodel=%p", conn, secmodel);
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (secmodel == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->nodeGetSecurityModel) {
int ret;
ret = conn->driver->nodeGetSecurityModel(conn, secmodel);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainAttachDevice:
* @domain: pointer to domain object
* @xml: pointer to XML description of one device
*
* Create a virtual device attachment to backend. This function,
* having hotplug semantics, is only allowed on an active domain.
*
* For compatibility, this method can also be used to change the media
* in an existing CDROM/Floppy device, however, applications are
* recommended to use the virDomainUpdateDeviceFlag method instead.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainAttachDevice(virDomainPtr domain, const char *xml)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xml=%s", xml);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (xml == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainAttachDevice) {
int ret;
ret = conn->driver->domainAttachDevice (domain, xml);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainAttachDeviceFlags:
* @domain: pointer to domain object
* @xml: pointer to XML description of one device
* @flags: an OR'ed set of virDomainDeviceModifyFlags
*
* Attach a virtual device to a domain, using the flags parameter
* to control how the device is attached. VIR_DOMAIN_AFFECT_CURRENT
* specifies that the device allocation is made based on current domain
* state. VIR_DOMAIN_AFFECT_LIVE specifies that the device shall be
* allocated to the active domain instance only and is not added to the
* persisted domain configuration. VIR_DOMAIN_AFFECT_CONFIG
* specifies that the device shall be allocated to the persisted domain
* configuration only. Note that the target hypervisor must return an
* error if unable to satisfy flags. E.g. the hypervisor driver will
* return failure if LIVE is specified but it only supports modifying the
* persisted device allocation.
*
* For compatibility, this method can also be used to change the media
* in an existing CDROM/Floppy device, however, applications are
* recommended to use the virDomainUpdateDeviceFlag method instead.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainAttachDeviceFlags(virDomainPtr domain,
const char *xml, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xml=%s, flags=%x", xml, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (xml == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainAttachDeviceFlags) {
int ret;
ret = conn->driver->domainAttachDeviceFlags(domain, xml, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainDetachDevice:
* @domain: pointer to domain object
* @xml: pointer to XML description of one device
*
* Destroy a virtual device attachment to backend. This function,
* having hot-unplug semantics, is only allowed on an active domain.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainDetachDevice(virDomainPtr domain, const char *xml)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xml=%s", xml);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (xml == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainDetachDevice) {
int ret;
ret = conn->driver->domainDetachDevice (domain, xml);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainDetachDeviceFlags:
* @domain: pointer to domain object
* @xml: pointer to XML description of one device
* @flags: an OR'ed set of virDomainDeviceModifyFlags
*
* Detach a virtual device from a domain, using the flags parameter
* to control how the device is detached. VIR_DOMAIN_AFFECT_CURRENT
* specifies that the device allocation is removed based on current domain
* state. VIR_DOMAIN_AFFECT_LIVE specifies that the device shall be
* deallocated from the active domain instance only and is not from the
* persisted domain configuration. VIR_DOMAIN_AFFECT_CONFIG
* specifies that the device shall be deallocated from the persisted domain
* configuration only. Note that the target hypervisor must return an
* error if unable to satisfy flags. E.g. the hypervisor driver will
* return failure if LIVE is specified but it only supports removing the
* persisted device allocation.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainDetachDeviceFlags(virDomainPtr domain,
const char *xml, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xml=%s, flags=%x", xml, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (xml == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainDetachDeviceFlags) {
int ret;
ret = conn->driver->domainDetachDeviceFlags(domain, xml, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainUpdateDeviceFlags:
* @domain: pointer to domain object
* @xml: pointer to XML description of one device
* @flags: an OR'ed set of virDomainDeviceModifyFlags
*
* Change a virtual device on a domain, using the flags parameter
* to control how the device is changed. VIR_DOMAIN_AFFECT_CURRENT
* specifies that the device change is made based on current domain
* state. VIR_DOMAIN_AFFECT_LIVE specifies that the device shall be
* changed on the active domain instance only and is not added to the
* persisted domain configuration. VIR_DOMAIN_AFFECT_CONFIG
* specifies that the device shall be changed on the persisted domain
* configuration only. Note that the target hypervisor must return an
* error if unable to satisfy flags. E.g. the hypervisor driver will
* return failure if LIVE is specified but it only supports modifying the
* persisted device allocation.
*
* This method is used for actions such changing CDROM/Floppy device
* media, altering the graphics configuration such as password,
* reconfiguring the NIC device backend connectivity, etc.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainUpdateDeviceFlags(virDomainPtr domain,
const char *xml, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xml=%s, flags=%x", xml, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (xml == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = domain->conn;
if (conn->driver->domainUpdateDeviceFlags) {
int ret;
ret = conn->driver->domainUpdateDeviceFlags(domain, xml, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virNodeGetCellsFreeMemory:
* @conn: pointer to the hypervisor connection
* @freeMems: pointer to the array of unsigned long long
* @startCell: index of first cell to return freeMems info on.
* @maxCells: Maximum number of cells for which freeMems information can
* be returned.
*
* This call returns the amount of free memory in one or more NUMA cells.
* The @freeMems array must be allocated by the caller and will be filled
* with the amount of free memory in bytes for each cell requested,
* starting with startCell (in freeMems[0]), up to either
* (startCell + maxCells), or the number of additional cells in the node,
* whichever is smaller.
*
* Returns the number of entries filled in freeMems, or -1 in case of error.
*/
int
virNodeGetCellsFreeMemory(virConnectPtr conn, unsigned long long *freeMems,
int startCell, int maxCells)
{
VIR_DEBUG("conn=%p, freeMems=%p, startCell=%d, maxCells=%d",
conn, freeMems, startCell, maxCells);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((freeMems == NULL) || (maxCells <= 0) || (startCell < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->nodeGetCellsFreeMemory) {
int ret;
ret = conn->driver->nodeGetCellsFreeMemory (conn, freeMems, startCell, maxCells);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNetworkGetConnect:
* @net: pointer to a network
*
* Provides the connection pointer associated with a network. The
* reference counter on the connection is not increased by this
* call.
*
* WARNING: When writing libvirt bindings in other languages, do
* not use this function. Instead, store the connection and
* the network object together.
*
* Returns the virConnectPtr or NULL in case of failure.
*/
virConnectPtr
virNetworkGetConnect (virNetworkPtr net)
{
VIR_DEBUG("net=%p", net);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK (net)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return net->conn;
}
/**
* virConnectNumOfNetworks:
* @conn: pointer to the hypervisor connection
*
* Provides the number of active networks.
*
* Returns the number of network found or -1 in case of error
*/
int
virConnectNumOfNetworks(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->networkDriver && conn->networkDriver->numOfNetworks) {
int ret;
ret = conn->networkDriver->numOfNetworks (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListNetworks:
* @conn: pointer to the hypervisor connection
* @names: array to collect the list of names of active networks
* @maxnames: size of @names
*
* Collect the list of active networks, and store their names in @names
*
* Returns the number of networks found or -1 in case of error
*/
int
virConnectListNetworks(virConnectPtr conn, char **const names, int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->listNetworks) {
int ret;
ret = conn->networkDriver->listNetworks (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectNumOfDefinedNetworks:
* @conn: pointer to the hypervisor connection
*
* Provides the number of inactive networks.
*
* Returns the number of networks found or -1 in case of error
*/
int
virConnectNumOfDefinedNetworks(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->networkDriver && conn->networkDriver->numOfDefinedNetworks) {
int ret;
ret = conn->networkDriver->numOfDefinedNetworks (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListDefinedNetworks:
* @conn: pointer to the hypervisor connection
* @names: pointer to an array to store the names
* @maxnames: size of the array
*
* list the inactive networks, stores the pointers to the names in @names
*
* Returns the number of names provided in the array or -1 in case of error
*/
int
virConnectListDefinedNetworks(virConnectPtr conn, char **const names,
int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->listDefinedNetworks) {
int ret;
ret = conn->networkDriver->listDefinedNetworks (conn,
names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNetworkLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the network
*
* Try to lookup a network on the given hypervisor based on its name.
*
* Returns a new network object or NULL in case of failure. If the
* network cannot be found, then VIR_ERR_NO_NETWORK error is raised.
*/
virNetworkPtr
virNetworkLookupByName(virConnectPtr conn, const char *name)
{
VIR_DEBUG("conn=%p, name=%s", conn, name);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkLookupByName) {
virNetworkPtr ret;
ret = conn->networkDriver->networkLookupByName (conn, name);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNetworkLookupByUUID:
* @conn: pointer to the hypervisor connection
* @uuid: the raw UUID for the network
*
* Try to lookup a network on the given hypervisor based on its UUID.
*
* Returns a new network object or NULL in case of failure. If the
* network cannot be found, then VIR_ERR_NO_NETWORK error is raised.
*/
virNetworkPtr
virNetworkLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
{
VIR_UUID_DEBUG(conn, uuid);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuid == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkLookupByUUID){
virNetworkPtr ret;
ret = conn->networkDriver->networkLookupByUUID (conn, uuid);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNetworkLookupByUUIDString:
* @conn: pointer to the hypervisor connection
* @uuidstr: the string UUID for the network
*
* Try to lookup a network on the given hypervisor based on its UUID.
*
* Returns a new network object or NULL in case of failure. If the
* network cannot be found, then VIR_ERR_NO_NETWORK error is raised.
*/
virNetworkPtr
virNetworkLookupByUUIDString(virConnectPtr conn, const char *uuidstr)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("conn=%p, uuidstr=%s", conn, NULLSTR(uuidstr));
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuidstr == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virUUIDParse(uuidstr, uuid) < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
return virNetworkLookupByUUID(conn, &uuid[0]);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNetworkCreateXML:
* @conn: pointer to the hypervisor connection
* @xmlDesc: an XML description of the network
*
* Create and start a new virtual network, based on an XML description
* similar to the one returned by virNetworkGetXMLDesc()
*
* Returns a new network object or NULL in case of failure
*/
virNetworkPtr
virNetworkCreateXML(virConnectPtr conn, const char *xmlDesc)
{
VIR_DEBUG("conn=%p, xmlDesc=%s", conn, xmlDesc);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (xmlDesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkCreateXML) {
virNetworkPtr ret;
ret = conn->networkDriver->networkCreateXML (conn, xmlDesc);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNetworkDefineXML:
* @conn: pointer to the hypervisor connection
* @xml: the XML description for the network, preferably in UTF-8
*
* Define a network, but does not create it
*
* Returns NULL in case of error, a pointer to the network otherwise
*/
virNetworkPtr
virNetworkDefineXML(virConnectPtr conn, const char *xml)
{
VIR_DEBUG("conn=%p, xml=%s", conn, xml);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (xml == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkDefineXML) {
virNetworkPtr ret;
ret = conn->networkDriver->networkDefineXML (conn, xml);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNetworkUndefine:
* @network: pointer to a defined network
*
* Undefine a network but does not stop it if it is running
*
* Returns 0 in case of success, -1 in case of error
*/
int
virNetworkUndefine(virNetworkPtr network) {
virConnectPtr conn;
VIR_DEBUG("network=%p", network);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = network->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibNetworkError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkUndefine) {
int ret;
ret = conn->networkDriver->networkUndefine (network);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return -1;
}
/**
* virNetworkCreate:
* @network: pointer to a defined network
*
* Create and start a defined network. If the call succeed the network
* moves from the defined to the running networks pools.
*
* Returns 0 in case of success, -1 in case of error
*/
int
virNetworkCreate(virNetworkPtr network)
{
virConnectPtr conn;
VIR_DEBUG("network=%p", network);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = network->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibNetworkError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkCreate) {
int ret;
ret = conn->networkDriver->networkCreate (network);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return -1;
}
/**
* virNetworkDestroy:
* @network: a network object
*
* Destroy the network object. The running instance is shutdown if not down
* already and all resources used by it are given back to the hypervisor. This
* does not free the associated virNetworkPtr object.
* This function may require privileged access
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNetworkDestroy(virNetworkPtr network)
{
virConnectPtr conn;
VIR_DEBUG("network=%p", network);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = network->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibNetworkError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->networkDriver && conn->networkDriver->networkDestroy) {
int ret;
ret = conn->networkDriver->networkDestroy (network);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return -1;
}
/**
* virNetworkFree:
* @network: a network object
*
* Free the network object. The running instance is kept alive.
* The data structure is freed and should not be used thereafter.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNetworkFree(virNetworkPtr network)
{
VIR_DEBUG("network=%p", network);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefNetwork(network) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virNetworkRef:
* @network: the network to hold a reference on
*
* Increment the reference count on the network. For each
* additional call to this method, there shall be a corresponding
* call to virNetworkFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using a network would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNetworkRef(virNetworkPtr network)
{
if ((!VIR_IS_CONNECTED_NETWORK(network))) {
virLibConnError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&network->conn->lock);
VIR_DEBUG("network=%p refs=%d", network, network->refs);
network->refs++;
virMutexUnlock(&network->conn->lock);
return 0;
}
/**
* virNetworkGetName:
* @network: a network object
*
* Get the public name for that network
*
* Returns a pointer to the name or NULL, the string need not be deallocated
* its lifetime will be the same as the network object.
*/
const char *
virNetworkGetName(virNetworkPtr network)
{
VIR_DEBUG("network=%p", network);
virResetLastError();
if (!VIR_IS_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return network->name;
}
/**
* virNetworkGetUUID:
* @network: a network object
* @uuid: pointer to a VIR_UUID_BUFLEN bytes array
*
* Get the UUID for a network
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNetworkGetUUID(virNetworkPtr network, unsigned char *uuid)
{
VIR_DEBUG("network=%p, uuid=%p", network, uuid);
virResetLastError();
if (!VIR_IS_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (uuid == NULL) {
virLibNetworkError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memcpy(uuid, &network->uuid[0], VIR_UUID_BUFLEN);
return 0;
error:
virDispatchError(network->conn);
return -1;
}
/**
* virNetworkGetUUIDString:
* @network: a network object
* @buf: pointer to a VIR_UUID_STRING_BUFLEN bytes array
*
* Get the UUID for a network as string. For more information about
* UUID see RFC4122.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNetworkGetUUIDString(virNetworkPtr network, char *buf)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("network=%p, buf=%p", network, buf);
virResetLastError();
if (!VIR_IS_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (buf == NULL) {
virLibNetworkError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virNetworkGetUUID(network, &uuid[0]))
goto error;
virUUIDFormat(uuid, buf);
return 0;
error:
virDispatchError(network->conn);
return -1;
}
/**
* virNetworkGetXMLDesc:
* @network: a network object
* @flags: an OR'ed set of extraction flags, not used yet
*
* Provide an XML description of the network. The description may be reused
* later to relaunch the network with virNetworkCreateXML().
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virNetworkGetXMLDesc(virNetworkPtr network, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("network=%p, flags=%x", network, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = network->conn;
if (conn->networkDriver && conn->networkDriver->networkGetXMLDesc) {
char *ret;
ret = conn->networkDriver->networkGetXMLDesc(network, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return NULL;
}
/**
* virNetworkGetBridgeName:
* @network: a network object
*
* Provides a bridge interface name to which a domain may connect
* a network interface in order to join the network.
*
* Returns a 0 terminated interface name, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virNetworkGetBridgeName(virNetworkPtr network)
{
virConnectPtr conn;
VIR_DEBUG("network=%p", network);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = network->conn;
if (conn->networkDriver && conn->networkDriver->networkGetBridgeName) {
char *ret;
ret = conn->networkDriver->networkGetBridgeName (network);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return NULL;
}
/**
* virNetworkGetAutostart:
* @network: a network object
* @autostart: the value returned
*
* Provides a boolean value indicating whether the network
* configured to be automatically started when the host
* machine boots.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNetworkGetAutostart(virNetworkPtr network,
int *autostart)
{
virConnectPtr conn;
VIR_DEBUG("network=%p, autostart=%p", network, autostart);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!autostart) {
virLibNetworkError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = network->conn;
if (conn->networkDriver && conn->networkDriver->networkGetAutostart) {
int ret;
ret = conn->networkDriver->networkGetAutostart (network, autostart);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return -1;
}
/**
* virNetworkSetAutostart:
* @network: a network object
* @autostart: whether the network should be automatically started 0 or 1
*
* Configure the network to be automatically started
* when the host machine boots.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNetworkSetAutostart(virNetworkPtr network,
int autostart)
{
virConnectPtr conn;
VIR_DEBUG("network=%p, autostart=%d", network, autostart);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(network)) {
virLibNetworkError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (network->conn->flags & VIR_CONNECT_RO) {
virLibNetworkError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = network->conn;
if (conn->networkDriver && conn->networkDriver->networkSetAutostart) {
int ret;
ret = conn->networkDriver->networkSetAutostart (network, autostart);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(network->conn);
return -1;
}
/**
* virInterfaceGetConnect:
* @iface: pointer to an interface
*
* Provides the connection pointer associated with an interface. The
* reference counter on the connection is not increased by this
* call.
*
* WARNING: When writing libvirt bindings in other languages, do
* not use this function. Instead, store the connection and
* the interface object together.
*
* Returns the virConnectPtr or NULL in case of failure.
*/
virConnectPtr
virInterfaceGetConnect (virInterfacePtr iface)
{
VIR_DEBUG("iface=%p", iface);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE (iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return iface->conn;
}
/**
* virConnectNumOfInterfaces:
* @conn: pointer to the hypervisor connection
*
* Provides the number of active interfaces on the physical host.
*
* Returns the number of active interfaces found or -1 in case of error
*/
int
virConnectNumOfInterfaces(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->interfaceDriver && conn->interfaceDriver->numOfInterfaces) {
int ret;
ret = conn->interfaceDriver->numOfInterfaces (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListInterfaces:
* @conn: pointer to the hypervisor connection
* @names: array to collect the list of names of interfaces
* @maxnames: size of @names
*
* Collect the list of active physical host interfaces,
* and store their names in @names
*
* Returns the number of interfaces found or -1 in case of error
*/
int
virConnectListInterfaces(virConnectPtr conn, char **const names, int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->listInterfaces) {
int ret;
ret = conn->interfaceDriver->listInterfaces (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectNumOfDefinedInterfaces:
* @conn: pointer to the hypervisor connection
*
* Provides the number of defined (inactive) interfaces on the physical host.
*
* Returns the number of defined interface found or -1 in case of error
*/
int
virConnectNumOfDefinedInterfaces(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->interfaceDriver && conn->interfaceDriver->numOfDefinedInterfaces) {
int ret;
ret = conn->interfaceDriver->numOfDefinedInterfaces (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListDefinedInterfaces:
* @conn: pointer to the hypervisor connection
* @names: array to collect the list of names of interfaces
* @maxnames: size of @names
*
* Collect the list of defined (inactive) physical host interfaces,
* and store their names in @names.
*
* Returns the number of interfaces found or -1 in case of error
*/
int
virConnectListDefinedInterfaces(virConnectPtr conn,
char **const names,
int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->listDefinedInterfaces) {
int ret;
ret = conn->interfaceDriver->listDefinedInterfaces (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virInterfaceLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the interface
*
* Try to lookup an interface on the given hypervisor based on its name.
*
* Returns a new interface object or NULL in case of failure. If the
* interface cannot be found, then VIR_ERR_NO_INTERFACE error is raised.
*/
virInterfacePtr
virInterfaceLookupByName(virConnectPtr conn, const char *name)
{
VIR_DEBUG("conn=%p, name=%s", conn, name);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceLookupByName) {
virInterfacePtr ret;
ret = conn->interfaceDriver->interfaceLookupByName (conn, name);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virInterfaceLookupByMACString:
* @conn: pointer to the hypervisor connection
* @macstr: the MAC for the interface (null-terminated ASCII format)
*
* Try to lookup an interface on the given hypervisor based on its MAC.
*
* Returns a new interface object or NULL in case of failure. If the
* interface cannot be found, then VIR_ERR_NO_INTERFACE error is raised.
*/
virInterfacePtr
virInterfaceLookupByMACString(virConnectPtr conn, const char *macstr)
{
VIR_DEBUG("conn=%p, macstr=%s", conn, macstr);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (macstr == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceLookupByMACString) {
virInterfacePtr ret;
ret = conn->interfaceDriver->interfaceLookupByMACString (conn, macstr);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virInterfaceGetName:
* @iface: an interface object
*
* Get the public name for that interface
*
* Returns a pointer to the name or NULL, the string need not be deallocated
* its lifetime will be the same as the interface object.
*/
const char *
virInterfaceGetName(virInterfacePtr iface)
{
VIR_DEBUG("iface=%p", iface);
virResetLastError();
if (!VIR_IS_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return iface->name;
}
/**
* virInterfaceGetMACString:
* @iface: an interface object
*
* Get the MAC for an interface as string. For more information about
* MAC see RFC4122.
*
* Returns a pointer to the MAC address (in null-terminated ASCII
* format) or NULL, the string need not be deallocated its lifetime
* will be the same as the interface object.
*/
const char *
virInterfaceGetMACString(virInterfacePtr iface)
{
VIR_DEBUG("iface=%p", iface);
virResetLastError();
if (!VIR_IS_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return iface->mac;
}
/**
* virInterfaceGetXMLDesc:
* @iface: an interface object
* @flags: an OR'ed set of extraction flags. Current valid bits:
*
* VIR_INTERFACE_XML_INACTIVE - return the static configuration,
* suitable for use redefining the
* interface via virInterfaceDefineXML()
*
* Provide an XML description of the interface. If
* VIR_INTERFACE_XML_INACTIVE is set, the description may be reused
* later to redefine the interface with virInterfaceDefineXML(). If it
* is not set, the ip address and netmask will be the current live
* setting of the interface, not the settings from the config files.
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virInterfaceGetXMLDesc(virInterfacePtr iface, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("iface=%p, flags=%x", iface, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = iface->conn;
if (conn->interfaceDriver && conn->interfaceDriver->interfaceGetXMLDesc) {
char *ret;
ret = conn->interfaceDriver->interfaceGetXMLDesc (iface, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(iface->conn);
return NULL;
}
/**
* virInterfaceDefineXML:
* @conn: pointer to the hypervisor connection
* @xml: the XML description for the interface, preferably in UTF-8
* @flags: and OR'ed set of extraction flags, not used yet
*
* Define an interface (or modify existing interface configuration).
*
* Normally this change in the interface configuration is immediately
* permanent/persistent, but if virInterfaceChangeBegin() has been
* previously called (i.e. if an interface config transaction is
* open), the new interface definition will only become permanent if
* virInterfaceChangeCommit() is called prior to the next reboot of
* the system running libvirtd. Prior to that time, it can be
* explicitly removed using virInterfaceChangeRollback(), or will be
* automatically removed during the next reboot of the system running
* libvirtd.
*
* Returns NULL in case of error, a pointer to the interface otherwise
*/
virInterfacePtr
virInterfaceDefineXML(virConnectPtr conn, const char *xml, unsigned int flags)
{
VIR_DEBUG("conn=%p, xml=%s, flags=%x", conn, xml, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (xml == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceDefineXML) {
virInterfacePtr ret;
ret = conn->interfaceDriver->interfaceDefineXML (conn, xml, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virInterfaceUndefine:
* @iface: pointer to a defined interface
*
* Undefine an interface, ie remove it from the config.
* This does not free the associated virInterfacePtr object.
*
* Normally this change in the interface configuration is
* permanent/persistent, but if virInterfaceChangeBegin() has been
* previously called (i.e. if an interface config transaction is
* open), the removal of the interface definition will only become
* permanent if virInterfaceChangeCommit() is called prior to the next
* reboot of the system running libvirtd. Prior to that time, the
* definition can be explicitly restored using
* virInterfaceChangeRollback(), or will be automatically restored
* during the next reboot of the system running libvirtd.
*
* Returns 0 in case of success, -1 in case of error
*/
int
virInterfaceUndefine(virInterfacePtr iface) {
virConnectPtr conn;
VIR_DEBUG("iface=%p", iface);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = iface->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibInterfaceError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceUndefine) {
int ret;
ret = conn->interfaceDriver->interfaceUndefine (iface);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(iface->conn);
return -1;
}
/**
* virInterfaceCreate:
* @iface: pointer to a defined interface
* @flags: and OR'ed set of extraction flags, not used yet
*
* Activate an interface (i.e. call "ifup").
*
* If there was an open network config transaction at the time this
* interface was defined (that is, if virInterfaceChangeBegin() had
* been called), the interface will be brought back down (and then
* undefined) if virInterfaceChangeRollback() is called.
p *
* Returns 0 in case of success, -1 in case of error
*/
int
virInterfaceCreate(virInterfacePtr iface, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("iface=%p, flags=%x", iface, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = iface->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibInterfaceError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceCreate) {
int ret;
ret = conn->interfaceDriver->interfaceCreate (iface, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(iface->conn);
return -1;
}
/**
* virInterfaceDestroy:
* @iface: an interface object
* @flags: and OR'ed set of extraction flags, not used yet
*
* deactivate an interface (ie call "ifdown")
* This does not remove the interface from the config, and
* does not free the associated virInterfacePtr object.
*
* If there is an open network config transaction at the time this
* interface is destroyed (that is, if virInterfaceChangeBegin() had
* been called), and if the interface is later undefined and then
* virInterfaceChangeRollback() is called, the restoral of the
* interface definition will also bring the interface back up.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virInterfaceDestroy(virInterfacePtr iface, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("iface=%p, flags=%x", iface, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = iface->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibInterfaceError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceDestroy) {
int ret;
ret = conn->interfaceDriver->interfaceDestroy (iface, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(iface->conn);
return -1;
}
/**
* virInterfaceRef:
* @iface: the interface to hold a reference on
*
* Increment the reference count on the interface. For each
* additional call to this method, there shall be a corresponding
* call to virInterfaceFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using an interface would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virInterfaceRef(virInterfacePtr iface)
{
if ((!VIR_IS_CONNECTED_INTERFACE(iface))) {
virLibConnError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&iface->conn->lock);
VIR_DEBUG("iface=%p refs=%d", iface, iface->refs);
iface->refs++;
virMutexUnlock(&iface->conn->lock);
return 0;
}
/**
* virInterfaceFree:
* @iface: an interface object
*
* Free the interface object. The interface itself is unaltered.
* The data structure is freed and should not be used thereafter.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virInterfaceFree(virInterfacePtr iface)
{
VIR_DEBUG("iface=%p", iface);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
virLibInterfaceError(VIR_ERR_INVALID_INTERFACE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefInterface(iface) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virInterfaceChangeBegin:
* @conn: pointer to hypervisor connection
* @flags: flags, not used yet
*
* This functions creates a restore point to which one can return
* later by calling virInterfaceChangeRollback(). This function should
* be called before any transaction with interface configuration.
* Once knowing, new configuration works, it can be commited via
* virInterfaceChangeCommit(), which frees the restore point.
*
* If virInterfaceChangeBegin() is called when a transaction is
* already opened, this function will fail, and a
* VIR_ERR_INVALID_OPERATION will be logged.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virInterfaceChangeBegin(virConnectPtr conn, unsigned int flags)
{
VIR_DEBUG("conn=%p, flags=%x", conn, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibInterfaceError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceChangeBegin) {
int ret;
ret = conn->interfaceDriver->interfaceChangeBegin(conn, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virInterfaceChangeCommit:
* @conn: pointer to hypervisor connection
* @flags: flags, not used yet
*
* This commits the changes made to interfaces and frees the restore point
* created by virInterfaceChangeBegin().
*
* If virInterfaceChangeCommit() is called when a transaction is not
* opened, this function will fail, and a VIR_ERR_INVALID_OPERATION
* will be logged.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virInterfaceChangeCommit(virConnectPtr conn, unsigned int flags)
{
VIR_DEBUG("conn=%p, flags=%x", conn, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibInterfaceError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver && conn->interfaceDriver->interfaceChangeCommit) {
int ret;
ret = conn->interfaceDriver->interfaceChangeCommit(conn, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virInterfaceChangeRollback:
* @conn: pointer to hypervisor connection
* @flags: flags, not used yet
*
* This cancels changes made to interfaces settings by restoring previous
* state created by virInterfaceChangeBegin().
*
* If virInterfaceChangeRollback() is called when a transaction is not
* opened, this function will fail, and a VIR_ERR_INVALID_OPERATION
* will be logged.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virInterfaceChangeRollback(virConnectPtr conn, unsigned int flags)
{
VIR_DEBUG("conn=%p, flags=%x", conn, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibInterfaceError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->interfaceDriver &&
conn->interfaceDriver->interfaceChangeRollback) {
int ret;
ret = conn->interfaceDriver->interfaceChangeRollback(conn, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virStoragePoolGetConnect:
* @pool: pointer to a pool
*
* Provides the connection pointer associated with a storage pool. The
* reference counter on the connection is not increased by this
* call.
*
* WARNING: When writing libvirt bindings in other languages, do
* not use this function. Instead, store the connection and
* the pool object together.
*
* Returns the virConnectPtr or NULL in case of failure.
*/
virConnectPtr
virStoragePoolGetConnect (virStoragePoolPtr pool)
{
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL (pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return pool->conn;
}
/**
* virConnectNumOfStoragePools:
* @conn: pointer to hypervisor connection
*
* Provides the number of active storage pools
*
* Returns the number of pools found, or -1 on error
*/
int
virConnectNumOfStoragePools (virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->storageDriver && conn->storageDriver->numOfPools) {
int ret;
ret = conn->storageDriver->numOfPools (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListStoragePools:
* @conn: pointer to hypervisor connection
* @names: array of char * to fill with pool names (allocated by caller)
* @maxnames: size of the names array
*
* Provides the list of names of active storage pools
* upto maxnames. If there are more than maxnames, the
* remaining names will be silently ignored.
*
* Returns 0 on success, -1 on error
*/
int
virConnectListStoragePools (virConnectPtr conn,
char **const names,
int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->listPools) {
int ret;
ret = conn->storageDriver->listPools (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectNumOfDefinedStoragePools:
* @conn: pointer to hypervisor connection
*
* Provides the number of inactive storage pools
*
* Returns the number of pools found, or -1 on error
*/
int
virConnectNumOfDefinedStoragePools(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->storageDriver && conn->storageDriver->numOfDefinedPools) {
int ret;
ret = conn->storageDriver->numOfDefinedPools (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListDefinedStoragePools:
* @conn: pointer to hypervisor connection
* @names: array of char * to fill with pool names (allocated by caller)
* @maxnames: size of the names array
*
* Provides the list of names of inactive storage pools
* upto maxnames. If there are more than maxnames, the
* remaining names will be silently ignored.
*
* Returns 0 on success, -1 on error
*/
int
virConnectListDefinedStoragePools(virConnectPtr conn,
char **const names,
int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->listDefinedPools) {
int ret;
ret = conn->storageDriver->listDefinedPools (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectFindStoragePoolSources:
* @conn: pointer to hypervisor connection
* @type: type of storage pool sources to discover
* @srcSpec: XML document specifying discovery source
* @flags: flags for discovery (unused, pass 0)
*
* Talks to a storage backend and attempts to auto-discover the set of
* available storage pool sources. e.g. For iSCSI this would be a set of
* iSCSI targets. For NFS this would be a list of exported paths. The
* srcSpec (optional for some storage pool types, e.g. local ones) is
* an instance of the storage pool's source element specifying where
* to look for the pools.
*
* srcSpec is not required for some types (e.g., those querying
* local storage resources only)
*
* Returns an xml document consisting of a SourceList element
* containing a source document appropriate to the given pool
* type for each discovered source.
*/
char *
virConnectFindStoragePoolSources(virConnectPtr conn,
const char *type,
const char *srcSpec,
unsigned int flags)
{
VIR_DEBUG("conn=%p, type=%s, src=%s, flags=%x",
conn, NULLSTR(type), NULLSTR(srcSpec), flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (type == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->findPoolSources) {
char *ret;
ret = conn->storageDriver->findPoolSources(conn, type, srcSpec, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStoragePoolLookupByName:
* @conn: pointer to hypervisor connection
* @name: name of pool to fetch
*
* Fetch a storage pool based on its unique name
*
* Returns a virStoragePoolPtr object, or NULL if no matching pool is found
*/
virStoragePoolPtr
virStoragePoolLookupByName(virConnectPtr conn,
const char *name)
{
VIR_DEBUG("conn=%p, name=%s", conn, name);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolLookupByName) {
virStoragePoolPtr ret;
ret = conn->storageDriver->poolLookupByName (conn, name);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStoragePoolLookupByUUID:
* @conn: pointer to hypervisor connection
* @uuid: globally unique id of pool to fetch
*
* Fetch a storage pool based on its globally unique id
*
* Returns a virStoragePoolPtr object, or NULL if no matching pool is found
*/
virStoragePoolPtr
virStoragePoolLookupByUUID(virConnectPtr conn,
const unsigned char *uuid)
{
VIR_UUID_DEBUG(conn, uuid);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuid == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolLookupByUUID) {
virStoragePoolPtr ret;
ret = conn->storageDriver->poolLookupByUUID (conn, uuid);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStoragePoolLookupByUUIDString:
* @conn: pointer to hypervisor connection
* @uuidstr: globally unique id of pool to fetch
*
* Fetch a storage pool based on its globally unique id
*
* Returns a virStoragePoolPtr object, or NULL if no matching pool is found
*/
virStoragePoolPtr
virStoragePoolLookupByUUIDString(virConnectPtr conn,
const char *uuidstr)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("conn=%p, uuidstr=%s", conn, NULLSTR(uuidstr));
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuidstr == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virUUIDParse(uuidstr, uuid) < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
return virStoragePoolLookupByUUID(conn, uuid);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStoragePoolLookupByVolume:
* @vol: pointer to storage volume
*
* Fetch a storage pool which contains a particular volume
*
* Returns a virStoragePoolPtr object, or NULL if no matching pool is found
*/
virStoragePoolPtr
virStoragePoolLookupByVolume(virStorageVolPtr vol)
{
VIR_DEBUG("vol=%p", vol);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_VOL(vol)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (vol->conn->storageDriver && vol->conn->storageDriver->poolLookupByVolume) {
virStoragePoolPtr ret;
ret = vol->conn->storageDriver->poolLookupByVolume (vol);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return NULL;
}
/**
* virStoragePoolCreateXML:
* @conn: pointer to hypervisor connection
* @xmlDesc: XML description for new pool
* @flags: future flags, use 0 for now
*
* Create a new storage based on its XML description. The
* pool is not persistent, so its definition will disappear
* when it is destroyed, or if the host is restarted
*
* Returns a virStoragePoolPtr object, or NULL if creation failed
*/
virStoragePoolPtr
virStoragePoolCreateXML(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags)
{
VIR_DEBUG("conn=%p, xmlDesc=%s, flags=%x", conn, xmlDesc, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (xmlDesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolCreateXML) {
virStoragePoolPtr ret;
ret = conn->storageDriver->poolCreateXML (conn, xmlDesc, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStoragePoolDefineXML:
* @conn: pointer to hypervisor connection
* @xml: XML description for new pool
* @flags: future flags, use 0 for now
*
* Define a new inactive storage pool based on its XML description. The
* pool is persistent, until explicitly undefined.
*
* Returns a virStoragePoolPtr object, or NULL if creation failed
*/
virStoragePoolPtr
virStoragePoolDefineXML(virConnectPtr conn,
const char *xml,
unsigned int flags)
{
VIR_DEBUG("conn=%p, xml=%s, flags=%x", conn, xml, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (xml == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolDefineXML) {
virStoragePoolPtr ret;
ret = conn->storageDriver->poolDefineXML (conn, xml, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStoragePoolBuild:
* @pool: pointer to storage pool
* @flags: future flags, use 0 for now
* @flags: flags to control pool build behaviour
*
* Currently only filesystem pool accepts flags VIR_STORAGE_POOL_BUILD_OVERWRITE
* and VIR_STORAGE_POOL_BUILD_NO_OVERWRITE.
*
* Build the underlying storage pool
*
* Returns 0 on success, or -1 upon failure
*/
int
virStoragePoolBuild(virStoragePoolPtr pool,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, flags=%x", pool, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = pool->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolBuild) {
int ret;
ret = conn->storageDriver->poolBuild (pool, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolUndefine:
* @pool: pointer to storage pool
*
* Undefine an inactive storage pool
*
* Returns 0 on success, -1 on failure
*/
int
virStoragePoolUndefine(virStoragePoolPtr pool)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_NETWORK, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = pool->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolUndefine) {
int ret;
ret = conn->storageDriver->poolUndefine (pool);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolCreate:
* @pool: pointer to storage pool
* @flags: future flags, use 0 for now
*
* Starts an inactive storage pool
*
* Returns 0 on success, or -1 if it could not be started
*/
int
virStoragePoolCreate(virStoragePoolPtr pool,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, flags=%x", pool, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = pool->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolCreate) {
int ret;
ret = conn->storageDriver->poolCreate (pool, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolDestroy:
* @pool: pointer to storage pool
*
* Destroy an active storage pool. This will deactivate the
* pool on the host, but keep any persistent config associated
* with it. If it has a persistent config it can later be
* restarted with virStoragePoolCreate(). This does not free
* the associated virStoragePoolPtr object.
*
* Returns 0 on success, or -1 if it could not be destroyed
*/
int
virStoragePoolDestroy(virStoragePoolPtr pool)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = pool->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolDestroy) {
int ret;
ret = conn->storageDriver->poolDestroy (pool);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolDelete:
* @pool: pointer to storage pool
* @flags: flags for obliteration process
*
* Delete the underlying pool resources. This is
* a non-recoverable operation. The virStoragePoolPtr object
* itself is not free'd.
*
* Returns 0 on success, or -1 if it could not be obliterate
*/
int
virStoragePoolDelete(virStoragePoolPtr pool,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, flags=%x", pool, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = pool->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolDelete) {
int ret;
ret = conn->storageDriver->poolDelete (pool, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolFree:
* @pool: pointer to storage pool
*
* Free a storage pool object, releasing all memory associated with
* it. Does not change the state of the pool on the host.
*
* Returns 0 on success, or -1 if it could not be free'd.
*/
int
virStoragePoolFree(virStoragePoolPtr pool)
{
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefStoragePool(pool) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virStoragePoolRef:
* @pool: the pool to hold a reference on
*
* Increment the reference count on the pool. For each
* additional call to this method, there shall be a corresponding
* call to virStoragePoolFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using a pool would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virStoragePoolRef(virStoragePoolPtr pool)
{
if ((!VIR_IS_CONNECTED_STORAGE_POOL(pool))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&pool->conn->lock);
VIR_DEBUG("pool=%p refs=%d", pool, pool->refs);
pool->refs++;
virMutexUnlock(&pool->conn->lock);
return 0;
}
/**
* virStoragePoolRefresh:
* @pool: pointer to storage pool
* @flags: flags to control refresh behaviour (currently unused, use 0)
*
* Request that the pool refresh its list of volumes. This may
* involve communicating with a remote server, and/or initializing
* new devices at the OS layer
*
* Returns 0 if the volume list was refreshed, -1 on failure
*/
int
virStoragePoolRefresh(virStoragePoolPtr pool,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, flags=%x", pool, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = pool->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->poolRefresh) {
int ret;
ret = conn->storageDriver->poolRefresh (pool, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolGetName:
* @pool: pointer to storage pool
*
* Fetch the locally unique name of the storage pool
*
* Returns the name of the pool, or NULL on error
*/
const char*
virStoragePoolGetName(virStoragePoolPtr pool)
{
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return pool->name;
}
/**
* virStoragePoolGetUUID:
* @pool: pointer to storage pool
* @uuid: buffer of VIR_UUID_BUFLEN bytes in size
*
* Fetch the globally unique ID of the storage pool
*
* Returns 0 on success, or -1 on error;
*/
int
virStoragePoolGetUUID(virStoragePoolPtr pool,
unsigned char *uuid)
{
VIR_DEBUG("pool=%p, uuid=%p", pool, uuid);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (uuid == NULL) {
virLibStoragePoolError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memcpy(uuid, &pool->uuid[0], VIR_UUID_BUFLEN);
return 0;
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolGetUUIDString:
* @pool: pointer to storage pool
* @buf: buffer of VIR_UUID_STRING_BUFLEN bytes in size
*
* Fetch the globally unique ID of the storage pool as a string
*
* Returns 0 on success, or -1 on error;
*/
int
virStoragePoolGetUUIDString(virStoragePoolPtr pool,
char *buf)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("pool=%p, buf=%p", pool, buf);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (buf == NULL) {
virLibStoragePoolError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virStoragePoolGetUUID(pool, &uuid[0]))
goto error;
virUUIDFormat(uuid, buf);
return 0;
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolGetInfo:
* @pool: pointer to storage pool
* @info: pointer at which to store info
*
* Get volatile information about the storage pool
* such as free space / usage summary
*
* Returns 0 on success, or -1 on failure.
*/
int
virStoragePoolGetInfo(virStoragePoolPtr pool,
virStoragePoolInfoPtr info)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, info=%p", pool, info);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (info == NULL) {
virLibStoragePoolError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memset(info, 0, sizeof(virStoragePoolInfo));
conn = pool->conn;
if (conn->storageDriver->poolGetInfo) {
int ret;
ret = conn->storageDriver->poolGetInfo (pool, info);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolGetXMLDesc:
* @pool: pointer to storage pool
* @flags: flags for XML format options (set of virDomainXMLFlags)
*
* Fetch an XML document describing all aspects of the
* storage pool. This is suitable for later feeding back
* into the virStoragePoolCreateXML method.
*
* Returns a XML document, or NULL on error
*/
char *
virStoragePoolGetXMLDesc(virStoragePoolPtr pool,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, flags=%x", pool, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = pool->conn;
if (conn->storageDriver && conn->storageDriver->poolGetXMLDesc) {
char *ret;
ret = conn->storageDriver->poolGetXMLDesc (pool, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return NULL;
}
/**
* virStoragePoolGetAutostart:
* @pool: pointer to storage pool
* @autostart: location in which to store autostart flag
*
* Fetches the value of the autostart flag, which determines
* whether the pool is automatically started at boot time
*
* Returns 0 on success, -1 on failure
*/
int
virStoragePoolGetAutostart(virStoragePoolPtr pool,
int *autostart)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, autostart=%p", pool, autostart);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!autostart) {
virLibStoragePoolError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
conn = pool->conn;
if (conn->storageDriver && conn->storageDriver->poolGetAutostart) {
int ret;
ret = conn->storageDriver->poolGetAutostart (pool, autostart);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolSetAutostart:
* @pool: pointer to storage pool
* @autostart: new flag setting
*
* Sets the autostart flag
*
* Returns 0 on success, -1 on failure
*/
int
virStoragePoolSetAutostart(virStoragePoolPtr pool,
int autostart)
{
virConnectPtr conn;
VIR_DEBUG("pool=%p, autostart=%d", pool, autostart);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibStoragePoolError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (pool->conn->flags & VIR_CONNECT_RO) {
virLibStoragePoolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
conn = pool->conn;
if (conn->storageDriver && conn->storageDriver->poolSetAutostart) {
int ret;
ret = conn->storageDriver->poolSetAutostart (pool, autostart);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolNumOfVolumes:
* @pool: pointer to storage pool
*
* Fetch the number of storage volumes within a pool
*
* Returns the number of storage pools, or -1 on failure
*/
int
virStoragePoolNumOfVolumes(virStoragePoolPtr pool)
{
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (pool->conn->storageDriver && pool->conn->storageDriver->poolNumOfVolumes) {
int ret;
ret = pool->conn->storageDriver->poolNumOfVolumes (pool);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolListVolumes:
* @pool: pointer to storage pool
* @names: array in which to storage volume names
* @maxnames: size of names array
*
* Fetch list of storage volume names, limiting to
* at most maxnames.
*
* Returns the number of names fetched, or -1 on error
*/
int
virStoragePoolListVolumes(virStoragePoolPtr pool,
char **const names,
int maxnames)
{
VIR_DEBUG("pool=%p, names=%p, maxnames=%d", pool, names, maxnames);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (pool->conn->storageDriver && pool->conn->storageDriver->poolListVolumes) {
int ret;
ret = pool->conn->storageDriver->poolListVolumes (pool, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStorageVolGetConnect:
* @vol: pointer to a pool
*
* Provides the connection pointer associated with a storage volume. The
* reference counter on the connection is not increased by this
* call.
*
* WARNING: When writing libvirt bindings in other languages, do
* not use this function. Instead, store the connection and
* the volume object together.
*
* Returns the virConnectPtr or NULL in case of failure.
*/
virConnectPtr
virStorageVolGetConnect (virStorageVolPtr vol)
{
VIR_DEBUG("vol=%p", vol);
virResetLastError();
if (!VIR_IS_STORAGE_VOL (vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return vol->conn;
}
/**
* virStorageVolLookupByName:
* @pool: pointer to storage pool
* @name: name of storage volume
*
* Fetch a pointer to a storage volume based on its name
* within a pool
*
* Returns a storage volume, or NULL if not found / error
*/
virStorageVolPtr
virStorageVolLookupByName(virStoragePoolPtr pool,
const char *name)
{
VIR_DEBUG("pool=%p, name=%s", pool, name);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (pool->conn->storageDriver && pool->conn->storageDriver->volLookupByName) {
virStorageVolPtr ret;
ret = pool->conn->storageDriver->volLookupByName (pool, name);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return NULL;
}
/**
* virStorageVolLookupByKey:
* @conn: pointer to hypervisor connection
* @key: globally unique key
*
* Fetch a pointer to a storage volume based on its
* globally unique key
*
* Returns a storage volume, or NULL if not found / error
*/
virStorageVolPtr
virStorageVolLookupByKey(virConnectPtr conn,
const char *key)
{
VIR_DEBUG("conn=%p, key=%s", conn, key);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (key == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->volLookupByKey) {
virStorageVolPtr ret;
ret = conn->storageDriver->volLookupByKey (conn, key);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStorageVolLookupByPath:
* @conn: pointer to hypervisor connection
* @path: locally unique path
*
* Fetch a pointer to a storage volume based on its
* locally (host) unique path
*
* Returns a storage volume, or NULL if not found / error
*/
virStorageVolPtr
virStorageVolLookupByPath(virConnectPtr conn,
const char *path)
{
VIR_DEBUG("conn=%p, path=%s", conn, path);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (path == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->volLookupByPath) {
virStorageVolPtr ret;
ret = conn->storageDriver->volLookupByPath (conn, path);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virStorageVolGetName:
* @vol: pointer to storage volume
*
* Fetch the storage volume name. This is unique
* within the scope of a pool
*
* Returns the volume name, or NULL on error
*/
const char*
virStorageVolGetName(virStorageVolPtr vol)
{
VIR_DEBUG("vol=%p", vol);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return vol->name;
}
/**
* virStorageVolGetKey:
* @vol: pointer to storage volume
*
* Fetch the storage volume key. This is globally
* unique, so the same volume will have the same
* key no matter what host it is accessed from
*
* Returns the volume key, or NULL on error
*/
const char*
virStorageVolGetKey(virStorageVolPtr vol)
{
VIR_DEBUG("vol=%p", vol);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return vol->key;
}
/**
* virStorageVolCreateXML:
* @pool: pointer to storage pool
* @xmldesc: description of volume to create
* @flags: flags for creation (unused, pass 0)
*
* Create a storage volume within a pool based
* on an XML description. Not all pools support
* creation of volumes
*
* Returns the storage volume, or NULL on error
*/
virStorageVolPtr
virStorageVolCreateXML(virStoragePoolPtr pool,
const char *xmldesc,
unsigned int flags)
{
VIR_DEBUG("pool=%p, flags=%x", pool, flags);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (xmldesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (pool->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (pool->conn->storageDriver && pool->conn->storageDriver->volCreateXML) {
virStorageVolPtr ret;
ret = pool->conn->storageDriver->volCreateXML (pool, xmldesc, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return NULL;
}
/**
* virStorageVolCreateXMLFrom:
* @pool: pointer to parent pool for the new volume
* @xmldesc: description of volume to create
* @clonevol: storage volume to use as input
* @flags: flags for creation (unused, pass 0)
*
* Create a storage volume in the parent pool, using the
* 'clonevol' volume as input. Information for the new
* volume (name, perms) are passed via a typical volume
* XML description.
*
* Returns the storage volume, or NULL on error
*/
virStorageVolPtr
virStorageVolCreateXMLFrom(virStoragePoolPtr pool,
const char *xmldesc,
virStorageVolPtr clonevol,
unsigned int flags)
{
VIR_DEBUG("pool=%p, flags=%x, clonevol=%p", pool, flags, clonevol);
virResetLastError();
if (!VIR_IS_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_POOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (!VIR_IS_STORAGE_VOL(clonevol)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
goto error;
}
if (xmldesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (pool->conn->flags & VIR_CONNECT_RO ||
clonevol->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (pool->conn->storageDriver &&
pool->conn->storageDriver->volCreateXMLFrom) {
virStorageVolPtr ret;
ret = pool->conn->storageDriver->volCreateXMLFrom (pool, xmldesc,
clonevol, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return NULL;
}
/**
* virStorageVolDownload:
* @vol: pointer to volume to download from
* @stream: stream to use as output
* @offset: position in @vol to start reading from
* @length: limit on amount of data to download
* @flags: future flags (unused, pass 0)
*
* Download the content of the volume as a stream. If @length
* is zero, then the remaining contents of the volume after
* @offset will be downloaded.
*
* This call sets up an asynchronous stream; subsequent use of
* stream APIs is necessary to transfer the actual data,
* determine how much data is successfully transferred, and
* detect any errors. The results will be unpredictable if
* another active stream is writing to the storage volume.
*
* Returns 0, or -1 upon error.
*/
int
virStorageVolDownload(virStorageVolPtr vol,
virStreamPtr stream,
unsigned long long offset,
unsigned long long length,
unsigned int flags)
{
VIR_DEBUG("vol=%p, stream=%p, offset=%llu, length=%llu, flags=%x",
vol, stream, offset, length, flags);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
return -1;
}
if (!VIR_IS_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_STREAM, __FUNCTION__);
return -1;
}
if (vol->conn->flags & VIR_CONNECT_RO ||
stream->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (vol->conn->storageDriver &&
vol->conn->storageDriver->volDownload) {
int ret;
ret = vol->conn->storageDriver->volDownload(vol,
stream,
offset,
length,
flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return -1;
}
/**
* virStorageVolUpload:
* @vol: pointer to volume to upload
* @stream: stream to use as input
* @offset: position to start writing to
* @length: limit on amount of data to upload
* @flags: flags for creation (unused, pass 0)
*
* Upload new content to the volume from a stream. This call
* will fail if @offset + @length exceeds the size of the
* volume. Otherwise, if @length is non-zero, an error
* will be raised if an attempt is made to upload greater
* than @length bytes of data.
*
* This call sets up an asynchronous stream; subsequent use of
* stream APIs is necessary to transfer the actual data,
* determine how much data is successfully transferred, and
* detect any errors. The results will be unpredictable if
* another active stream is writing to the storage volume.
*
* Returns 0, or -1 upon error.
*/
int
virStorageVolUpload(virStorageVolPtr vol,
virStreamPtr stream,
unsigned long long offset,
unsigned long long length,
unsigned int flags)
{
VIR_DEBUG("vol=%p, stream=%p, offset=%llu, length=%llu, flags=%x",
vol, stream, offset, length, flags);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibConnError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
return -1;
}
if (!VIR_IS_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_STREAM, __FUNCTION__);
return -1;
}
if (vol->conn->flags & VIR_CONNECT_RO ||
stream->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (vol->conn->storageDriver &&
vol->conn->storageDriver->volUpload) {
int ret;
ret = vol->conn->storageDriver->volUpload(vol,
stream,
offset,
length,
flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return -1;
}
/**
* virStorageVolDelete:
* @vol: pointer to storage volume
* @flags: future flags, use 0 for now
*
* Delete the storage volume from the pool
*
* Returns 0 on success, or -1 on error
*/
int
virStorageVolDelete(virStorageVolPtr vol,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("vol=%p, flags=%x", vol, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = vol->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStorageVolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->volDelete) {
int ret;
ret = conn->storageDriver->volDelete (vol, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return -1;
}
/**
* virStorageVolWipe:
* @vol: pointer to storage volume
* @flags: future flags, use 0 for now
*
* Ensure data previously on a volume is not accessible to future reads
*
* Returns 0 on success, or -1 on error
*/
int
virStorageVolWipe(virStorageVolPtr vol,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("vol=%p, flags=%x", vol, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = vol->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibStorageVolError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->storageDriver && conn->storageDriver->volWipe) {
int ret;
ret = conn->storageDriver->volWipe(vol, flags);
if (ret < 0) {
goto error;
}
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return -1;
}
/**
* virStorageVolFree:
* @vol: pointer to storage volume
*
* Release the storage volume handle. The underlying
* storage volume continues to exist.
*
* Returns 0 on success, or -1 on error
*/
int
virStorageVolFree(virStorageVolPtr vol)
{
VIR_DEBUG("vol=%p", vol);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefStorageVol(vol) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virStorageVolRef:
* @vol: the vol to hold a reference on
*
* Increment the reference count on the vol. For each
* additional call to this method, there shall be a corresponding
* call to virStorageVolFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using a vol would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virStorageVolRef(virStorageVolPtr vol)
{
if ((!VIR_IS_CONNECTED_STORAGE_VOL(vol))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&vol->conn->lock);
VIR_DEBUG("vol=%p refs=%d", vol, vol->refs);
vol->refs++;
virMutexUnlock(&vol->conn->lock);
return 0;
}
/**
* virStorageVolGetInfo:
* @vol: pointer to storage volume
* @info: pointer at which to store info
*
* Fetches volatile information about the storage
* volume such as its current allocation
*
* Returns 0 on success, or -1 on failure
*/
int
virStorageVolGetInfo(virStorageVolPtr vol,
virStorageVolInfoPtr info)
{
virConnectPtr conn;
VIR_DEBUG("vol=%p, info=%p", vol, info);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (info == NULL) {
virLibStorageVolError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memset(info, 0, sizeof(virStorageVolInfo));
conn = vol->conn;
if (conn->storageDriver->volGetInfo){
int ret;
ret = conn->storageDriver->volGetInfo (vol, info);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return -1;
}
/**
* virStorageVolGetXMLDesc:
* @vol: pointer to storage volume
* @flags: flags for XML generation (unused, pass 0)
*
* Fetch an XML document describing all aspects of
* the storage volume
*
* Returns the XML document, or NULL on error
*/
char *
virStorageVolGetXMLDesc(virStorageVolPtr vol,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("vol=%p, flags=%x", vol, flags);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = vol->conn;
if (conn->storageDriver && conn->storageDriver->volGetXMLDesc) {
char *ret;
ret = conn->storageDriver->volGetXMLDesc (vol, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return NULL;
}
/**
* virStorageVolGetPath:
* @vol: pointer to storage volume
*
* Fetch the storage volume path. Depending on the pool
* configuration this is either persistent across hosts,
* or dynamically assigned at pool startup. Consult
* pool documentation for information on getting the
* persistent naming
*
* Returns the storage volume path, or NULL on error. The
* caller must free() the returned path after use.
*/
char *
virStorageVolGetPath(virStorageVolPtr vol)
{
virConnectPtr conn;
VIR_DEBUG("vol=%p", vol);
virResetLastError();
if (!VIR_IS_STORAGE_VOL(vol)) {
virLibStorageVolError(VIR_ERR_INVALID_STORAGE_VOL, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = vol->conn;
if (conn->storageDriver && conn->storageDriver->volGetPath) {
char *ret;
ret = conn->storageDriver->volGetPath (vol);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(vol->conn);
return NULL;
}
/**
* virNodeNumOfDevices:
* @conn: pointer to the hypervisor connection
* @cap: capability name
* @flags: flags (unused, pass 0)
*
* Provides the number of node devices.
*
* If the optional 'cap' argument is non-NULL, then the count
* will be restricted to devices with the specified capability
*
* Returns the number of node devices or -1 in case of error
*/
int
virNodeNumOfDevices(virConnectPtr conn, const char *cap, unsigned int flags)
{
VIR_DEBUG("conn=%p, cap=%s, flags=%x", conn, NULLSTR(cap), flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->deviceMonitor && conn->deviceMonitor->numOfDevices) {
int ret;
ret = conn->deviceMonitor->numOfDevices (conn, cap, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNodeListDevices:
* @conn: pointer to the hypervisor connection
* @cap: capability name
* @names: array to collect the list of node device names
* @maxnames: size of @names
* @flags: flags (unused, pass 0)
*
* Collect the list of node devices, and store their names in @names
*
* If the optional 'cap' argument is non-NULL, then the count
* will be restricted to devices with the specified capability
*
* Returns the number of node devices found or -1 in case of error
*/
int
virNodeListDevices(virConnectPtr conn,
const char *cap,
char **const names, int maxnames,
unsigned int flags)
{
VIR_DEBUG("conn=%p, cap=%s, names=%p, maxnames=%d, flags=%x",
conn, cap, names, maxnames, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->deviceMonitor && conn->deviceMonitor->listDevices) {
int ret;
ret = conn->deviceMonitor->listDevices (conn, cap, names, maxnames, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNodeDeviceLookupByName:
* @conn: pointer to the hypervisor connection
* @name: unique device name
*
* Lookup a node device by its name.
*
* Returns a virNodeDevicePtr if found, NULL otherwise.
*/
virNodeDevicePtr virNodeDeviceLookupByName(virConnectPtr conn, const char *name)
{
VIR_DEBUG("conn=%p, name=%p", conn, name);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->deviceMonitor && conn->deviceMonitor->deviceLookupByName) {
virNodeDevicePtr ret;
ret = conn->deviceMonitor->deviceLookupByName (conn, name);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNodeDeviceGetXMLDesc:
* @dev: pointer to the node device
* @flags: flags for XML generation (unused, pass 0)
*
* Fetch an XML document describing all aspects of
* the device.
*
* Returns the XML document, or NULL on error
*/
char *virNodeDeviceGetXMLDesc(virNodeDevicePtr dev, unsigned int flags)
{
VIR_DEBUG("dev=%p, conn=%p, flags=%x", dev, dev ? dev->conn : NULL, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (dev->conn->deviceMonitor && dev->conn->deviceMonitor->deviceGetXMLDesc) {
char *ret;
ret = dev->conn->deviceMonitor->deviceGetXMLDesc(dev, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return NULL;
}
/**
* virNodeDeviceGetName:
* @dev: the device
*
* Just return the device name
*
* Returns the device name or NULL in case of error
*/
const char *virNodeDeviceGetName(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return dev->name;
}
/**
* virNodeDeviceGetParent:
* @dev: the device
*
* Accessor for the parent of the device
*
* Returns the name of the device's parent, or NULL if the
* device has no parent.
*/
const char *virNodeDeviceGetParent(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (!dev->parent) {
if (dev->conn->deviceMonitor && dev->conn->deviceMonitor->deviceGetParent) {
dev->parent = dev->conn->deviceMonitor->deviceGetParent (dev);
} else {
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
virDispatchError(dev->conn);
return NULL;
}
}
return dev->parent;
}
/**
* virNodeDeviceNumOfCaps:
* @dev: the device
*
* Accessor for the number of capabilities supported by the device.
*
* Returns the number of capabilities supported by the device.
*/
int virNodeDeviceNumOfCaps(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dev->conn->deviceMonitor && dev->conn->deviceMonitor->deviceNumOfCaps) {
int ret;
ret = dev->conn->deviceMonitor->deviceNumOfCaps (dev);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return -1;
}
/**
* virNodeDeviceListCaps:
* @dev: the device
* @names: array to collect the list of capability names
* @maxnames: size of @names
*
* Lists the names of the capabilities supported by the device.
*
* Returns the number of capability names listed in @names.
*/
int virNodeDeviceListCaps(virNodeDevicePtr dev,
char **const names,
int maxnames)
{
VIR_DEBUG("dev=%p, conn=%p, names=%p, maxnames=%d",
dev, dev ? dev->conn : NULL, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (names == NULL || maxnames < 0) {
virLibNodeDeviceError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (dev->conn->deviceMonitor && dev->conn->deviceMonitor->deviceListCaps) {
int ret;
ret = dev->conn->deviceMonitor->deviceListCaps (dev, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return -1;
}
/**
* virNodeDeviceFree:
* @dev: pointer to the node device
*
* Drops a reference to the node device, freeing it if
* this was the last reference.
*
* Returns the 0 for success, -1 for error.
*/
int virNodeDeviceFree(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefNodeDevice(dev) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virNodeDeviceRef:
* @dev: the dev to hold a reference on
*
* Increment the reference count on the dev. For each
* additional call to this method, there shall be a corresponding
* call to virNodeDeviceFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using a dev would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNodeDeviceRef(virNodeDevicePtr dev)
{
if ((!VIR_IS_CONNECTED_NODE_DEVICE(dev))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&dev->conn->lock);
VIR_DEBUG("dev=%p refs=%d", dev, dev->refs);
dev->refs++;
virMutexUnlock(&dev->conn->lock);
return 0;
}
/**
* virNodeDeviceDettach:
* @dev: pointer to the node device
*
* Dettach the node device from the node itself so that it may be
* assigned to a guest domain.
*
* Depending on the hypervisor, this may involve operations such
* as unbinding any device drivers from the device, binding the
* device to a dummy device driver and resetting the device.
*
* If the device is currently in use by the node, this method may
* fail.
*
* Once the device is not assigned to any guest, it may be re-attached
* to the node using the virNodeDeviceReattach() method.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNodeDeviceDettach(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dev->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dev->conn->driver->nodeDeviceDettach) {
int ret;
ret = dev->conn->driver->nodeDeviceDettach (dev);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return -1;
}
/**
* virNodeDeviceReAttach:
* @dev: pointer to the node device
*
* Re-attach a previously dettached node device to the node so that it
* may be used by the node again.
*
* Depending on the hypervisor, this may involve operations such
* as resetting the device, unbinding it from a dummy device driver
* and binding it to its appropriate driver.
*
* If the device is currently in use by a guest, this method may fail.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNodeDeviceReAttach(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dev->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dev->conn->driver->nodeDeviceReAttach) {
int ret;
ret = dev->conn->driver->nodeDeviceReAttach (dev);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return -1;
}
/**
* virNodeDeviceReset:
* @dev: pointer to the node device
*
* Reset a previously dettached node device to the node before or
* after assigning it to a guest.
*
* The exact reset semantics depends on the hypervisor and device
* type but, for example, KVM will attempt to reset PCI devices with
* a Function Level Reset, Secondary Bus Reset or a Power Management
* D-State reset.
*
* If the reset will affect other devices which are currently in use,
* this function may fail.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNodeDeviceReset(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p, conn=%p", dev, dev ? dev->conn : NULL);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dev->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dev->conn->driver->nodeDeviceReset) {
int ret;
ret = dev->conn->driver->nodeDeviceReset (dev);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return -1;
}
/**
* virNodeDeviceCreateXML:
* @conn: pointer to the hypervisor connection
* @xmlDesc: string containing an XML description of the device to be created
* @flags: callers should always pass 0
*
* Create a new device on the VM host machine, for example, virtual
* HBAs created using vport_create.
*
* Returns a node device object if successful, NULL in case of failure
*/
virNodeDevicePtr
virNodeDeviceCreateXML(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags)
{
VIR_DEBUG("conn=%p, xmlDesc=%s, flags=%x", conn, xmlDesc, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (xmlDesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->deviceMonitor &&
conn->deviceMonitor->deviceCreateXML) {
virNodeDevicePtr dev = conn->deviceMonitor->deviceCreateXML(conn, xmlDesc, flags);
if (dev == NULL)
goto error;
return dev;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNodeDeviceDestroy:
* @dev: a device object
*
* Destroy the device object. The virtual device is removed from the host operating system.
* This function may require privileged access
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNodeDeviceDestroy(virNodeDevicePtr dev)
{
VIR_DEBUG("dev=%p", dev);
virResetLastError();
if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) {
virLibNodeDeviceError(VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dev->conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (dev->conn->deviceMonitor &&
dev->conn->deviceMonitor->deviceDestroy) {
int retval = dev->conn->deviceMonitor->deviceDestroy(dev);
if (retval < 0) {
goto error;
}
return 0;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dev->conn);
return -1;
}
/*
* Domain Event Notification
*/
/**
* virConnectDomainEventRegister:
* @conn: pointer to the connection
* @cb: callback to the function handling domain events
* @opaque: opaque data to pass on to the callback
* @freecb: optional function to deallocate opaque when not used anymore
*
* Adds a callback to receive notifications of domain lifecycle events
* occurring on a connection
*
* Use of this method is no longer recommended. Instead applications
* should try virConnectDomainEventRegisterAny which has a more flexible
* API contract
*
* The virDomainPtr object handle passed into the callback upon delivery
* of an event is only valid for the duration of execution of the callback.
* If the callback wishes to keep the domain object after the callback returns,
* it shall take a reference to it, by calling virDomainRef.
* The reference can be released once the object is no longer required
* by calling virDomainFree.
*
* Returns 0 on success, -1 on failure
*/
int
virConnectDomainEventRegister(virConnectPtr conn,
virConnectDomainEventCallback cb,
void *opaque,
virFreeCallback freecb)
{
VIR_DEBUG("conn=%p, cb=%p, opaque=%p, freecb=%p", conn, cb, opaque, freecb);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (cb == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((conn->driver) && (conn->driver->domainEventRegister)) {
int ret;
ret = conn->driver->domainEventRegister (conn, cb, opaque, freecb);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectDomainEventDeregister:
* @conn: pointer to the connection
* @cb: callback to the function handling domain events
*
* Removes a callback previously registered with the virConnectDomainEventRegister
* funtion.
*
* Use of this method is no longer recommended. Instead applications
* should try virConnectDomainEventUnregisterAny which has a more flexible
* API contract
*
* Returns 0 on success, -1 on failure
*/
int
virConnectDomainEventDeregister(virConnectPtr conn,
virConnectDomainEventCallback cb)
{
VIR_DEBUG("conn=%p, cb=%p", conn, cb);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (cb == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((conn->driver) && (conn->driver->domainEventDeregister)) {
int ret;
ret = conn->driver->domainEventDeregister (conn, cb);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virSecretGetConnect:
* @secret: A virSecret secret
*
* Provides the connection pointer associated with a secret. The reference
* counter on the connection is not increased by this call.
*
* WARNING: When writing libvirt bindings in other languages, do not use this
* function. Instead, store the connection and the secret object together.
*
* Returns the virConnectPtr or NULL in case of failure.
*/
virConnectPtr
virSecretGetConnect (virSecretPtr secret)
{
VIR_DEBUG("secret=%p", secret);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET (secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return secret->conn;
}
/**
* virConnectNumOfSecrets:
* @conn: virConnect connection
*
* Fetch number of currently defined secrets.
*
* Returns the number currently defined secrets.
*/
int
virConnectNumOfSecrets(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->secretDriver != NULL &&
conn->secretDriver->numOfSecrets != NULL) {
int ret;
ret = conn->secretDriver->numOfSecrets(conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListSecrets:
* @conn: virConnect connection
* @uuids: Pointer to an array to store the UUIDs
* @maxuuids: size of the array.
*
* List UUIDs of defined secrets, store pointers to names in uuids.
*
* Returns the number of UUIDs provided in the array, or -1 on failure.
*/
int
virConnectListSecrets(virConnectPtr conn, char **uuids, int maxuuids)
{
VIR_DEBUG("conn=%p, uuids=%p, maxuuids=%d", conn, uuids, maxuuids);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (uuids == NULL || maxuuids < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->secretDriver != NULL && conn->secretDriver->listSecrets != NULL) {
int ret;
ret = conn->secretDriver->listSecrets(conn, uuids, maxuuids);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virSecretLookupByUUID:
* @conn: pointer to the hypervisor connection
* @uuid: the raw UUID for the secret
*
* Try to lookup a secret on the given hypervisor based on its UUID.
* Uses the 16 bytes of raw data to describe the UUID
*
* Returns a new secret object or NULL in case of failure. If the
* secret cannot be found, then VIR_ERR_NO_SECRET error is raised.
*/
virSecretPtr
virSecretLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
{
VIR_UUID_DEBUG(conn, uuid);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuid == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->secretDriver &&
conn->secretDriver->lookupByUUID) {
virSecretPtr ret;
ret = conn->secretDriver->lookupByUUID (conn, uuid);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virSecretLookupByUUIDString:
* @conn: pointer to the hypervisor connection
* @uuidstr: the string UUID for the secret
*
* Try to lookup a secret on the given hypervisor based on its UUID.
* Uses the printable string value to describe the UUID
*
* Returns a new secret object or NULL in case of failure. If the
* secret cannot be found, then VIR_ERR_NO_SECRET error is raised.
*/
virSecretPtr
virSecretLookupByUUIDString(virConnectPtr conn, const char *uuidstr)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("conn=%p, uuidstr=%s", conn, NULLSTR(uuidstr));
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuidstr == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virUUIDParse(uuidstr, uuid) < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
return virSecretLookupByUUID(conn, &uuid[0]);
error:
virDispatchError(conn);
return NULL;
}
/**
* virSecretLookupByUsage:
* @conn: pointer to the hypervisor connection
* @usageType: the type of secret usage
* @usageID: identifier of the object using the secret
*
* Try to lookup a secret on the given hypervisor based on its usage
* The usageID is unique within the set of secrets sharing the
* same usageType value.
*
* Returns a new secret object or NULL in case of failure. If the
* secret cannot be found, then VIR_ERR_NO_SECRET error is raised.
*/
virSecretPtr
virSecretLookupByUsage(virConnectPtr conn,
int usageType,
const char *usageID)
{
VIR_DEBUG("conn=%p, usageType=%d usageID=%s", conn, usageType, NULLSTR(usageID));
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (usageID == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->secretDriver &&
conn->secretDriver->lookupByUsage) {
virSecretPtr ret;
ret = conn->secretDriver->lookupByUsage (conn, usageType, usageID);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virSecretDefineXML:
* @conn: virConnect connection
* @xml: XML describing the secret.
* @flags: flags, use 0 for now
*
* If XML specifies a UUID, locates the specified secret and replaces all
* attributes of the secret specified by UUID by attributes specified in xml
* (any attributes not specified in xml are discarded).
*
* Otherwise, creates a new secret with an automatically chosen UUID, and
* initializes its attributes from xml.
*
* Returns a the secret on success, NULL on failure.
*/
virSecretPtr
virSecretDefineXML(virConnectPtr conn, const char *xml, unsigned int flags)
{
VIR_DEBUG("conn=%p, xml=%s, flags=%x", conn, xml, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (xml == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->secretDriver != NULL && conn->secretDriver->defineXML != NULL) {
virSecretPtr ret;
ret = conn->secretDriver->defineXML(conn, xml, flags);
if (ret == NULL)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virSecretGetUUID:
* @secret: A virSecret secret
* @uuid: buffer of VIR_UUID_BUFLEN bytes in size
*
* Fetches the UUID of the secret.
*
* Returns 0 on success with the uuid buffer being filled, or
* -1 upon failure.
*/
int
virSecretGetUUID(virSecretPtr secret, unsigned char *uuid)
{
VIR_DEBUG("secret=%p", secret);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (uuid == NULL) {
virLibSecretError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(secret->conn);
return -1;
}
memcpy(uuid, &secret->uuid[0], VIR_UUID_BUFLEN);
return 0;
}
/**
* virSecretGetUUIDString:
* @secret: a secret object
* @buf: pointer to a VIR_UUID_STRING_BUFLEN bytes array
*
* Get the UUID for a secret as string. For more information about
* UUID see RFC4122.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virSecretGetUUIDString(virSecretPtr secret, char *buf)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("secret=%p, buf=%p", secret, buf);
virResetLastError();
if (!VIR_IS_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (buf == NULL) {
virLibSecretError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virSecretGetUUID(secret, &uuid[0]))
goto error;
virUUIDFormat(uuid, buf);
return 0;
error:
virDispatchError(secret->conn);
return -1;
}
/**
* virSecretGetUsageType:
* @secret: a secret object
*
* Get the type of object which uses this secret. The returned
* value is one of the constants defined in the virSecretUsageType
* enumeration. More values may be added to this enumeration in
* the future, so callers should expect to see usage types they
* do not explicitly know about.
*
* Returns a positive integer identifying the type of object,
* or -1 upon error.
*/
int
virSecretGetUsageType(virSecretPtr secret)
{
VIR_DEBUG("secret=%p", secret);
virResetLastError();
if (!VIR_IS_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
return secret->usageType;
}
/**
* virSecretGetUsageID:
* @secret: a secret object
*
* Get the unique identifier of the object with which this
* secret is to be used. The format of the identifier is
* dependant on the usage type of the secret. For a secret
* with a usage type of VIR_SECRET_USAGE_TYPE_VOLUME the
* identifier will be a fully qualfied path name. The
* identifiers are intended to be unique within the set of
* all secrets sharing the same usage type. ie, there shall
* only ever be one secret for each volume path.
*
* Returns a string identifying the object using the secret,
* or NULL upon error
*/
const char *
virSecretGetUsageID(virSecretPtr secret)
{
VIR_DEBUG("secret=%p", secret);
virResetLastError();
if (!VIR_IS_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return secret->usageID;
}
/**
* virSecretGetXMLDesc:
* @secret: A virSecret secret
* @flags: flags, use 0 for now
*
* Fetches an XML document describing attributes of the secret.
*
* Returns the XML document on success, NULL on failure. The caller must
* free() the XML.
*/
char *
virSecretGetXMLDesc(virSecretPtr secret, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("secret=%p, flags=%x", secret, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = secret->conn;
if (conn->secretDriver != NULL && conn->secretDriver->getXMLDesc != NULL) {
char *ret;
ret = conn->secretDriver->getXMLDesc(secret, flags);
if (ret == NULL)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virSecretSetValue:
* @secret: A virSecret secret
* @value: Value of the secret
* @value_size: Size of the value
* @flags: flags, use 0 for now
*
* Sets the value of a secret.
*
* Returns 0 on success, -1 on failure.
*/
int
virSecretSetValue(virSecretPtr secret, const unsigned char *value,
size_t value_size, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("secret=%p, value=%p, value_size=%zu, flags=%x", secret, value,
value_size, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = secret->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibSecretError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (value == NULL) {
virLibSecretError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->secretDriver != NULL && conn->secretDriver->setValue != NULL) {
int ret;
ret = conn->secretDriver->setValue(secret, value, value_size, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virSecretGetValue:
* @secret: A virSecret connection
* @value_size: Place for storing size of the secret value
* @flags: flags, use 0 for now
*
* Fetches the value of a secret.
*
* Returns the secret value on success, NULL on failure. The caller must
* free() the secret value.
*/
unsigned char *
virSecretGetValue(virSecretPtr secret, size_t *value_size, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("secret=%p, value_size=%p, flags=%x", secret, value_size, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = secret->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibSecretError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (value_size == NULL) {
virLibSecretError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->secretDriver != NULL && conn->secretDriver->getValue != NULL) {
unsigned char *ret;
ret = conn->secretDriver->getValue(secret, value_size, flags, 0);
if (ret == NULL)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virSecretUndefine:
* @secret: A virSecret secret
*
* Deletes the specified secret. This does not free the associated
* virSecretPtr object.
*
* Returns 0 on success, -1 on failure.
*/
int
virSecretUndefine(virSecretPtr secret)
{
virConnectPtr conn;
VIR_DEBUG("secret=%p", secret);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = secret->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibSecretError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->secretDriver != NULL && conn->secretDriver->undefine != NULL) {
int ret;
ret = conn->secretDriver->undefine(secret);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virSecretRef:
* @secret: the secret to hold a reference on
*
* Increment the reference count on the secret. For each additional call to
* this method, there shall be a corresponding call to virSecretFree to release
* the reference count, once the caller no longer needs the reference to this
* object.
*
* This method is typically useful for applications where multiple threads are
* using a connection, and it is required that the connection remain open until
* all threads have finished using it. ie, each new thread using a secret would
* increment the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virSecretRef(virSecretPtr secret)
{
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&secret->conn->lock);
VIR_DEBUG("secret=%p refs=%d", secret, secret->refs);
secret->refs++;
virMutexUnlock(&secret->conn->lock);
return 0;
}
/**
* virSecretFree:
* @secret: pointer to a secret
*
* Release the secret handle. The underlying secret continues to exist.
*
* Returns 0 on success, or -1 on error
*/
int
virSecretFree(virSecretPtr secret)
{
VIR_DEBUG("secret=%p", secret);
virResetLastError();
if (!VIR_IS_CONNECTED_SECRET(secret)) {
virLibSecretError(VIR_ERR_INVALID_SECRET, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefSecret(secret) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virStreamNew:
* @conn: pointer to the connection
* @flags: control features of the stream
*
* Creates a new stream object which can be used to perform
* streamed I/O with other public API function.
*
* When no longer needed, a stream object must be released
* with virStreamFree. If a data stream has been used,
* then the application must call virStreamFinish or
* virStreamAbort before free'ing to, in order to notify
* the driver of termination.
*
* If a non-blocking data stream is required passed
* VIR_STREAM_NONBLOCK for flags, otherwise pass 0.
*
* Returns the new stream, or NULL upon error
*/
virStreamPtr
virStreamNew(virConnectPtr conn,
unsigned int flags)
{
virStreamPtr st;
VIR_DEBUG("conn=%p, flags=%x", conn, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
st = virGetStream(conn);
if (st)
st->flags = flags;
else
virDispatchError(conn);
return st;
}
/**
* virStreamRef:
* @stream: pointer to the stream
*
* Increment the reference count on the stream. For each
* additional call to this method, there shall be a corresponding
* call to virStreamFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* Returns 0 in case of success, -1 in case of failure
*/
int
virStreamRef(virStreamPtr stream)
{
if ((!VIR_IS_CONNECTED_STREAM(stream))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&stream->conn->lock);
VIR_DEBUG("stream=%p refs=%d", stream, stream->refs);
stream->refs++;
virMutexUnlock(&stream->conn->lock);
return 0;
}
/**
* virStreamSend:
* @stream: pointer to the stream object
* @data: buffer to write to stream
* @nbytes: size of @data buffer
*
* Write a series of bytes to the stream. This method may
* block the calling application for an arbitrary amount
* of time. Once an application has finished sending data
* it should call virStreamFinish to wait for successful
* confirmation from the driver, or detect any error.
*
* This method may not be used if a stream source has been
* registered.
*
* Errors are not guaranteed to be reported synchronously
* with the call, but may instead be delayed until a
* subsequent call.
*
* An example using this with a hypothetical file upload
* API looks like
*
* virStreamPtr st = virStreamNew(conn, 0);
* int fd = open("demo.iso", O_RDONLY)
*
* virConnectUploadFile(conn, "demo.iso", st);
*
* while (1) {
* char buf[1024];
* int got = read(fd, buf, 1024);
* if (got < 0) {
* virStreamAbort(st);
* break;
* }
* if (got == 0) {
* virStreamFinish(st);
* break;
* }
* int offset = 0;
* while (offset < got) {
* int sent = virStreamSend(st, buf+offset, got-offset)
* if (sent < 0) {
* virStreamAbort(st);
* goto done;
* }
* offset += sent;
* }
* }
* if (virStreamFinish(st) < 0)
* ... report an error ....
* done:
* virStreamFree(st);
* close(fd);
*
* Returns the number of bytes written, which may be less
* than requested.
*
* Returns -1 upon error, at which time the stream will
* be marked as aborted, and the caller should now release
* the stream with virStreamFree.
*
* Returns -2 if the outgoing transmit buffers are full &
* the stream is marked as non-blocking.
*/
int virStreamSend(virStreamPtr stream,
const char *data,
size_t nbytes)
{
VIR_DEBUG("stream=%p, data=%p, nbytes=%zi", stream, data, nbytes);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (data == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (stream->driver &&
stream->driver->streamSend) {
int ret;
ret = (stream->driver->streamSend)(stream, data, nbytes);
if (ret == -2)
return -2;
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamRecv:
* @stream: pointer to the stream object
* @data: buffer to read into from stream
* @nbytes: size of @data buffer
*
* Reads a series of bytes from the stream. This method may
* block the calling application for an arbitrary amount
* of time.
*
* Errors are not guaranteed to be reported synchronously
* with the call, but may instead be delayed until a
* subsequent call.
*
* An example using this with a hypothetical file download
* API looks like
*
* virStreamPtr st = virStreamNew(conn, 0);
* int fd = open("demo.iso", O_WRONLY, 0600)
*
* virConnectDownloadFile(conn, "demo.iso", st);
*
* while (1) {
* char buf[1024];
* int got = virStreamRecv(st, buf, 1024);
* if (got < 0)
* break;
* if (got == 0) {
* virStreamFinish(st);
* break;
* }
* int offset = 0;
* while (offset < got) {
* int sent = write(fd, buf+offset, got-offset)
* if (sent < 0) {
* virStreamAbort(st);
* goto done;
* }
* offset += sent;
* }
* }
* if (virStreamFinish(st) < 0)
* ... report an error ....
* done:
* virStreamFree(st);
* close(fd);
*
*
* Returns the number of bytes read, which may be less
* than requested.
*
* Returns 0 when the end of the stream is reached, at
* which time the caller should invoke virStreamFinish()
* to get confirmation of stream completion.
*
* Returns -1 upon error, at which time the stream will
* be marked as aborted, and the caller should now release
* the stream with virStreamFree.
*
* Returns -2 if there is no data pending to be read & the
* stream is marked as non-blocking.
*/
int virStreamRecv(virStreamPtr stream,
char *data,
size_t nbytes)
{
VIR_DEBUG("stream=%p, data=%p, nbytes=%zi", stream, data, nbytes);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (data == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (stream->driver &&
stream->driver->streamRecv) {
int ret;
ret = (stream->driver->streamRecv)(stream, data, nbytes);
if (ret == -2)
return -2;
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamSendAll:
* @stream: pointer to the stream object
* @handler: source callback for reading data from application
* @opaque: application defined data
*
* Send the entire data stream, reading the data from the
* requested data source. This is simply a convenient alternative
* to virStreamSend, for apps that do blocking-I/o.
*
* An example using this with a hypothetical file upload
* API looks like
*
* int mysource(virStreamPtr st, char *buf, int nbytes, void *opaque) {
* int *fd = opaque;
*
* return read(*fd, buf, nbytes);
* }
*
* virStreamPtr st = virStreamNew(conn, 0);
* int fd = open("demo.iso", O_RDONLY)
*
* virConnectUploadFile(conn, st);
* if (virStreamSendAll(st, mysource, &fd) < 0) {
* ...report an error ...
* goto done;
* }
* if (virStreamFinish(st) < 0)
* ...report an error...
* virStreamFree(st);
* close(fd);
*
* Returns 0 if all the data was successfully sent. The caller
* should invoke virStreamFinish(st) to flush the stream upon
* success and then virStreamFree
*
* Returns -1 upon any error, with virStreamAbort() already
* having been called, so the caller need only call
* virStreamFree()
*/
int virStreamSendAll(virStreamPtr stream,
virStreamSourceFunc handler,
void *opaque)
{
char *bytes = NULL;
int want = 1024*64;
int ret = -1;
VIR_DEBUG("stream=%p, handler=%p, opaque=%p", stream, handler, opaque);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (handler == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto cleanup;
}
if (stream->flags & VIR_STREAM_NONBLOCK) {
virLibConnError(VIR_ERR_OPERATION_INVALID,
_("data sources cannot be used for non-blocking streams"));
goto cleanup;
}
if (VIR_ALLOC_N(bytes, want) < 0) {
virReportOOMError();
goto cleanup;
}
for (;;) {
int got, offset = 0;
got = (handler)(stream, bytes, want, opaque);
if (got < 0) {
virStreamAbort(stream);
goto cleanup;
}
if (got == 0)
break;
while (offset < got) {
int done;
done = virStreamSend(stream, bytes + offset, got - offset);
if (done < 0)
goto cleanup;
offset += done;
}
}
ret = 0;
cleanup:
VIR_FREE(bytes);
if (ret != 0)
virDispatchError(stream->conn);
return ret;
}
/**
* virStreamRecvAll:
* @stream: pointer to the stream object
* @handler: sink callback for writing data to application
* @opaque: application defined data
*
* Receive the entire data stream, sending the data to the
* requested data sink. This is simply a convenient alternative
* to virStreamRecv, for apps that do blocking-I/o.
*
* An example using this with a hypothetical file download
* API looks like
*
* int mysink(virStreamPtr st, const char *buf, int nbytes, void *opaque) {
* int *fd = opaque;
*
* return write(*fd, buf, nbytes);
* }
*
* virStreamPtr st = virStreamNew(conn, 0);
* int fd = open("demo.iso", O_WRONLY)
*
* virConnectUploadFile(conn, st);
* if (virStreamRecvAll(st, mysink, &fd) < 0) {
* ...report an error ...
* goto done;
* }
* if (virStreamFinish(st) < 0)
* ...report an error...
* virStreamFree(st);
* close(fd);
*
* Returns 0 if all the data was successfully received. The caller
* should invoke virStreamFinish(st) to flush the stream upon
* success and then virStreamFree
*
* Returns -1 upon any error, with virStreamAbort() already
* having been called, so the caller need only call
* virStreamFree()
*/
int virStreamRecvAll(virStreamPtr stream,
virStreamSinkFunc handler,
void *opaque)
{
char *bytes = NULL;
int want = 1024*64;
int ret = -1;
VIR_DEBUG("stream=%p, handler=%p, opaque=%p", stream, handler, opaque);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (handler == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto cleanup;
}
if (stream->flags & VIR_STREAM_NONBLOCK) {
virLibConnError(VIR_ERR_OPERATION_INVALID,
_("data sinks cannot be used for non-blocking streams"));
goto cleanup;
}
if (VIR_ALLOC_N(bytes, want) < 0) {
virReportOOMError();
goto cleanup;
}
for (;;) {
int got, offset = 0;
got = virStreamRecv(stream, bytes, want);
if (got < 0)
goto cleanup;
if (got == 0)
break;
while (offset < got) {
int done;
done = (handler)(stream, bytes + offset, got - offset, opaque);
if (done < 0) {
virStreamAbort(stream);
goto cleanup;
}
offset += done;
}
}
ret = 0;
cleanup:
VIR_FREE(bytes);
if (ret != 0)
virDispatchError(stream->conn);
return ret;
}
/**
* virStreamEventAddCallback:
* @stream: pointer to the stream object
* @events: set of events to monitor
* @cb: callback to invoke when an event occurs
* @opaque: application defined data
* @ff: callback to free @opaque data
*
* Register a callback to be notified when a stream
* becomes writable, or readable. This is most commonly
* used in conjunction with non-blocking data streams
* to integrate into an event loop
*
* Returns 0 on success, -1 upon error
*/
int virStreamEventAddCallback(virStreamPtr stream,
int events,
virStreamEventCallback cb,
void *opaque,
virFreeCallback ff)
{
VIR_DEBUG("stream=%p, events=%d, cb=%p, opaque=%p, ff=%p", stream, events, cb, opaque, ff);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (stream->driver &&
stream->driver->streamAddCallback) {
int ret;
ret = (stream->driver->streamAddCallback)(stream, events, cb, opaque, ff);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamEventUpdateCallback:
* @stream: pointer to the stream object
* @events: set of events to monitor
*
* Changes the set of events to monitor for a stream. This allows
* for event notification to be changed without having to
* unregister & register the callback completely. This method
* is guaranteed to succeed if a callback is already registered
*
* Returns 0 on success, -1 if no callback is registered
*/
int virStreamEventUpdateCallback(virStreamPtr stream,
int events)
{
VIR_DEBUG("stream=%p, events=%d", stream, events);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (stream->driver &&
stream->driver->streamUpdateCallback) {
int ret;
ret = (stream->driver->streamUpdateCallback)(stream, events);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamEventRemoveCallback:
* @stream: pointer to the stream object
*
* Remove an event callback from the stream
*
* Returns 0 on success, -1 on error
*/
int virStreamEventRemoveCallback(virStreamPtr stream)
{
VIR_DEBUG("stream=%p", stream);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (stream->driver &&
stream->driver->streamRemoveCallback) {
int ret;
ret = (stream->driver->streamRemoveCallback)(stream);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamFinish:
* @stream: pointer to the stream object
*
* Indicate that there is no further data is to be transmitted
* on the stream. For output streams this should be called once
* all data has been written. For input streams this should be
* called once virStreamRecv returns end-of-file.
*
* This method is a synchronization point for all asynchronous
* errors, so if this returns a success code the application can
* be sure that all data has been successfully processed.
*
* Returns 0 on success, -1 upon error
*/
int virStreamFinish(virStreamPtr stream)
{
VIR_DEBUG("stream=%p", stream);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (stream->driver &&
stream->driver->streamFinish) {
int ret;
ret = (stream->driver->streamFinish)(stream);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamAbort:
* @stream: pointer to the stream object
*
* Request that the in progress data transfer be cancelled
* abnormally before the end of the stream has been reached.
* For output streams this can be used to inform the driver
* that the stream is being terminated early. For input
* streams this can be used to inform the driver that it
* should stop sending data.
*
* Returns 0 on success, -1 upon error
*/
int virStreamAbort(virStreamPtr stream)
{
VIR_DEBUG("stream=%p", stream);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!stream->driver) {
VIR_DEBUG("aborting unused stream");
return 0;
}
if (stream->driver->streamAbort) {
int ret;
ret = (stream->driver->streamAbort)(stream);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(stream->conn);
return -1;
}
/**
* virStreamFree:
* @stream: pointer to the stream object
*
* Decrement the reference count on a stream, releasing
* the stream object if the reference count has hit zero.
*
* There must not be an active data transfer in progress
* when releasing the stream. If a stream needs to be
* disposed of prior to end of stream being reached, then
* the virStreamAbort function should be called first.
*
* Returns 0 upon success, or -1 on error
*/
int virStreamFree(virStreamPtr stream)
{
VIR_DEBUG("stream=%p", stream);
virResetLastError();
if (!VIR_IS_CONNECTED_STREAM(stream)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
/* XXX Enforce shutdown before free'ing resources ? */
if (virUnrefStream(stream) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virDomainIsActive:
* @dom: pointer to the domain object
*
* Determine if the domain is currently running
*
* Returns 1 if running, 0 if inactive, -1 on error
*/
int virDomainIsActive(virDomainPtr dom)
{
VIR_DEBUG("dom=%p", dom);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(dom)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dom->conn->driver->domainIsActive) {
int ret;
ret = dom->conn->driver->domainIsActive(dom);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainIsPersistent:
* @dom: pointer to the domain object
*
* Determine if the domain has a persistent configuration
* which means it will still exist after shutting down
*
* Returns 1 if persistent, 0 if transient, -1 on error
*/
int virDomainIsPersistent(virDomainPtr dom)
{
VIR_DOMAIN_DEBUG(dom);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(dom)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dom->conn->driver->domainIsPersistent) {
int ret;
ret = dom->conn->driver->domainIsPersistent(dom);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainIsUpdated:
* @dom: pointer to the domain object
*
* Determine if the domain has been updated.
*
* Returns 1 if updated, 0 if not, -1 on error
*/
int virDomainIsUpdated(virDomainPtr dom)
{
VIR_DOMAIN_DEBUG(dom);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(dom)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dom->conn->driver->domainIsUpdated) {
int ret;
ret = dom->conn->driver->domainIsUpdated(dom);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virNetworkIsActive:
* @net: pointer to the network object
*
* Determine if the network is currently running
*
* Returns 1 if running, 0 if inactive, -1 on error
*/
int virNetworkIsActive(virNetworkPtr net)
{
VIR_DEBUG("net=%p", net);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(net)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (net->conn->networkDriver->networkIsActive) {
int ret;
ret = net->conn->networkDriver->networkIsActive(net);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(net->conn);
return -1;
}
/**
* virNetworkIsPersistent:
* @net: pointer to the network object
*
* Determine if the network has a persistent configuration
* which means it will still exist after shutting down
*
* Returns 1 if persistent, 0 if transient, -1 on error
*/
int virNetworkIsPersistent(virNetworkPtr net)
{
VIR_DEBUG("net=%p", net);
virResetLastError();
if (!VIR_IS_CONNECTED_NETWORK(net)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (net->conn->networkDriver->networkIsPersistent) {
int ret;
ret = net->conn->networkDriver->networkIsPersistent(net);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(net->conn);
return -1;
}
/**
* virStoragePoolIsActive:
* @pool: pointer to the storage pool object
*
* Determine if the storage pool is currently running
*
* Returns 1 if running, 0 if inactive, -1 on error
*/
int virStoragePoolIsActive(virStoragePoolPtr pool)
{
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (pool->conn->storageDriver->poolIsActive) {
int ret;
ret = pool->conn->storageDriver->poolIsActive(pool);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virStoragePoolIsPersistent:
* @pool: pointer to the storage pool object
*
* Determine if the storage pool has a persistent configuration
* which means it will still exist after shutting down
*
* Returns 1 if persistent, 0 if transient, -1 on error
*/
int virStoragePoolIsPersistent(virStoragePoolPtr pool)
{
VIR_DEBUG("pool=%p", pool);
virResetLastError();
if (!VIR_IS_CONNECTED_STORAGE_POOL(pool)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (pool->conn->storageDriver->poolIsPersistent) {
int ret;
ret = pool->conn->storageDriver->poolIsPersistent(pool);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(pool->conn);
return -1;
}
/**
* virConnectNumOfNWFilters:
* @conn: pointer to the hypervisor connection
*
* Provides the number of nwfilters.
*
* Returns the number of nwfilters found or -1 in case of error
*/
int
virConnectNumOfNWFilters(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->nwfilterDriver && conn->nwfilterDriver->numOfNWFilters) {
int ret;
ret = conn->nwfilterDriver->numOfNWFilters (conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListNWFilters:
* @conn: pointer to the hypervisor connection
* @names: array to collect the list of names of network filters
* @maxnames: size of @names
*
* Collect the list of network filters, and store their names in @names
*
* Returns the number of network filters found or -1 in case of error
*/
int
virConnectListNWFilters(virConnectPtr conn, char **const names, int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if ((names == NULL) || (maxnames < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->nwfilterDriver && conn->nwfilterDriver->listNWFilters) {
int ret;
ret = conn->nwfilterDriver->listNWFilters (conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virNWFilterLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the network filter
*
* Try to lookup a network filter on the given hypervisor based on its name.
*
* Returns a new nwfilter object or NULL in case of failure. If the
* network filter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.
*/
virNWFilterPtr
virNWFilterLookupByName(virConnectPtr conn, const char *name)
{
VIR_DEBUG("conn=%p, name=%s", conn, name);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterLookupByName) {
virNWFilterPtr ret;
ret = conn->nwfilterDriver->nwfilterLookupByName (conn, name);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterLookupByUUID:
* @conn: pointer to the hypervisor connection
* @uuid: the raw UUID for the network filter
*
* Try to lookup a network filter on the given hypervisor based on its UUID.
*
* Returns a new nwfilter object or NULL in case of failure. If the
* nwfdilter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.
*/
virNWFilterPtr
virNWFilterLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
{
VIR_UUID_DEBUG(conn, uuid);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuid == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterLookupByUUID){
virNWFilterPtr ret;
ret = conn->nwfilterDriver->nwfilterLookupByUUID (conn, uuid);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterLookupByUUIDString:
* @conn: pointer to the hypervisor connection
* @uuidstr: the string UUID for the nwfilter
*
* Try to lookup an nwfilter on the given hypervisor based on its UUID.
*
* Returns a new nwfilter object or NULL in case of failure. If the
* nwfilter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.
*/
virNWFilterPtr
virNWFilterLookupByUUIDString(virConnectPtr conn, const char *uuidstr)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("conn=%p, uuidstr=%s", conn, NULLSTR(uuidstr));
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (uuidstr == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virUUIDParse(uuidstr, uuid) < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
return virNWFilterLookupByUUID(conn, &uuid[0]);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterFree:
* @nwfilter: a nwfilter object
*
* Free the nwfilter object. The running instance is kept alive.
* The data structure is freed and should not be used thereafter.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNWFilterFree(virNWFilterPtr nwfilter)
{
VIR_DEBUG("nwfilter=%p", nwfilter);
virResetLastError();
if (!VIR_IS_CONNECTED_NWFILTER(nwfilter)) {
virLibNWFilterError(VIR_ERR_INVALID_NWFILTER, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefNWFilter(nwfilter) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virNWFilterGetName:
* @nwfilter: a nwfilter object
*
* Get the public name for the network filter
*
* Returns a pointer to the name or NULL, the string need not be deallocated
* its lifetime will be the same as the nwfilter object.
*/
const char *
virNWFilterGetName(virNWFilterPtr nwfilter)
{
VIR_DEBUG("nwfilter=%p", nwfilter);
virResetLastError();
if (!VIR_IS_NWFILTER(nwfilter)) {
virLibNWFilterError(VIR_ERR_INVALID_NWFILTER, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return nwfilter->name;
}
/**
* virNWFilterGetUUID:
* @nwfilter: a nwfilter object
* @uuid: pointer to a VIR_UUID_BUFLEN bytes array
*
* Get the UUID for a network filter
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNWFilterGetUUID(virNWFilterPtr nwfilter, unsigned char *uuid)
{
VIR_DEBUG("nwfilter=%p, uuid=%p", nwfilter, uuid);
virResetLastError();
if (!VIR_IS_NWFILTER(nwfilter)) {
virLibNWFilterError(VIR_ERR_INVALID_NWFILTER, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (uuid == NULL) {
virLibNWFilterError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memcpy(uuid, &nwfilter->uuid[0], VIR_UUID_BUFLEN);
return 0;
error:
virDispatchError(nwfilter->conn);
return -1;
}
/**
* virNWFilterGetUUIDString:
* @nwfilter: a nwfilter object
* @buf: pointer to a VIR_UUID_STRING_BUFLEN bytes array
*
* Get the UUID for a network filter as string. For more information about
* UUID see RFC4122.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNWFilterGetUUIDString(virNWFilterPtr nwfilter, char *buf)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("nwfilter=%p, buf=%p", nwfilter, buf);
virResetLastError();
if (!VIR_IS_NWFILTER(nwfilter)) {
virLibNWFilterError(VIR_ERR_INVALID_NWFILTER, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (buf == NULL) {
virLibNWFilterError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (virNWFilterGetUUID(nwfilter, &uuid[0]))
goto error;
virUUIDFormat(uuid, buf);
return 0;
error:
virDispatchError(nwfilter->conn);
return -1;
}
/**
* virNWFilterDefineXML:
* @conn: pointer to the hypervisor connection
* @xmlDesc: an XML description of the nwfilter
*
* Define a new network filter, based on an XML description
* similar to the one returned by virNWFilterGetXMLDesc()
*
* Returns a new nwfilter object or NULL in case of failure
*/
virNWFilterPtr
virNWFilterDefineXML(virConnectPtr conn, const char *xmlDesc)
{
VIR_DEBUG("conn=%p, xmlDesc=%s", conn, xmlDesc);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (xmlDesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->nwfilterDriver && conn->nwfilterDriver->defineXML) {
virNWFilterPtr ret;
ret = conn->nwfilterDriver->defineXML (conn, xmlDesc);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterUndefine:
* @nwfilter: a nwfilter object
*
* Undefine the nwfilter object. This call will not succeed if
* a running VM is referencing the filter. This does not free the
* associated virNWFilterPtr object.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNWFilterUndefine(virNWFilterPtr nwfilter)
{
virConnectPtr conn;
VIR_DEBUG("nwfilter=%p", nwfilter);
virResetLastError();
if (!VIR_IS_CONNECTED_NWFILTER(nwfilter)) {
virLibNWFilterError(VIR_ERR_INVALID_NWFILTER, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = nwfilter->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibNWFilterError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->nwfilterDriver && conn->nwfilterDriver->undefine) {
int ret;
ret = conn->nwfilterDriver->undefine (nwfilter);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(nwfilter->conn);
return -1;
}
/**
* virNWFilterGetXMLDesc:
* @nwfilter: a nwfilter object
* @flags: an OR'ed set of extraction flags, not used yet
*
* Provide an XML description of the network filter. The description may be
* reused later to redefine the network filter with virNWFilterCreateXML().
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virNWFilterGetXMLDesc(virNWFilterPtr nwfilter, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("nwfilter=%p, flags=%x", nwfilter, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_NWFILTER(nwfilter)) {
virLibNWFilterError(VIR_ERR_INVALID_NWFILTER, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = nwfilter->conn;
if (conn->nwfilterDriver && conn->nwfilterDriver->getXMLDesc) {
char *ret;
ret = conn->nwfilterDriver->getXMLDesc (nwfilter, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(nwfilter->conn);
return NULL;
}
/**
* virNWFilterRef:
* @nwfilter: the nwfilter to hold a reference on
*
* Increment the reference count on the nwfilter. For each
* additional call to this method, there shall be a corresponding
* call to virNWFilterFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using an nwfilter would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNWFilterRef(virNWFilterPtr nwfilter)
{
if ((!VIR_IS_CONNECTED_NWFILTER(nwfilter))) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virMutexLock(&nwfilter->conn->lock);
VIR_DEBUG("nwfilter=%p refs=%d", nwfilter, nwfilter->refs);
nwfilter->refs++;
virMutexUnlock(&nwfilter->conn->lock);
return 0;
}
/**
* virInterfaceIsActive:
* @iface: pointer to the interface object
*
* Determine if the interface is currently running
*
* Returns 1 if running, 0 if inactive, -1 on error
*/
int virInterfaceIsActive(virInterfacePtr iface)
{
VIR_DEBUG("iface=%p", iface);
virResetLastError();
if (!VIR_IS_CONNECTED_INTERFACE(iface)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (iface->conn->interfaceDriver->interfaceIsActive) {
int ret;
ret = iface->conn->interfaceDriver->interfaceIsActive(iface);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(iface->conn);
return -1;
}
/**
* virConnectIsEncrypted:
* @conn: pointer to the connection object
*
* Determine if the connection to the hypervisor is encrypted
*
* Returns 1 if encrypted, 0 if not encrypted, -1 on error
*/
int virConnectIsEncrypted(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->driver->isEncrypted) {
int ret;
ret = conn->driver->isEncrypted(conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectIsSecure:
* @conn: pointer to the connection object
*
* Determine if the connection to the hypervisor is secure
*
* A connection will be classed as secure if it is either
* encrypted, or running over a channel which is not exposed
* to eavesdropping (eg a UNIX domain socket, or pipe)
*
* Returns 1 if secure, 0 if secure, -1 on error
*/
int virConnectIsSecure(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->driver->isSecure) {
int ret;
ret = conn->driver->isSecure(conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectCompareCPU:
* @conn: virConnect connection
* @xmlDesc: XML describing the CPU to compare with host CPU
* @flags: currently unused, pass 0
*
* Compares the given CPU description with the host CPU
*
* Returns comparison result according to enum virCPUCompareResult
*/
int
virConnectCompareCPU(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags)
{
VIR_DEBUG("conn=%p, xmlDesc=%s, flags=%x", conn, xmlDesc, flags);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return VIR_CPU_COMPARE_ERROR;
}
if (xmlDesc == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->cpuCompare) {
int ret;
ret = conn->driver->cpuCompare(conn, xmlDesc, flags);
if (ret == VIR_CPU_COMPARE_ERROR)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return VIR_CPU_COMPARE_ERROR;
}
/**
* virConnectBaselineCPU:
*
* @conn: virConnect connection
* @xmlCPUs: array of XML descriptions of host CPUs
* @ncpus: number of CPUs in xmlCPUs
* @flags: fine-tuning flags, currently unused, pass 0.
*
* Computes the most feature-rich CPU which is compatible with all given
* host CPUs.
*
* Returns XML description of the computed CPU or NULL on error.
*/
char *
virConnectBaselineCPU(virConnectPtr conn,
const char **xmlCPUs,
unsigned int ncpus,
unsigned int flags)
{
unsigned int i;
VIR_DEBUG("conn=%p, xmlCPUs=%p, ncpus=%u, flags=%x",
conn, xmlCPUs, ncpus, flags);
if (xmlCPUs) {
for (i = 0; i < ncpus; i++)
VIR_DEBUG("xmlCPUs[%u]=%s", i, NULLSTR(xmlCPUs[i]));
}
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
if (xmlCPUs == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->cpuBaseline) {
char *cpu;
cpu = conn->driver->cpuBaseline(conn, xmlCPUs, ncpus, flags);
if (!cpu)
goto error;
return cpu;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainGetJobInfo:
* @domain: a domain object
* @info: pointer to a virDomainJobInfo structure allocated by the user
*
* Extract information about progress of a background job on a domain.
* Will return an error if the domain is not active.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainGetJobInfo(virDomainPtr domain, virDomainJobInfoPtr info)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "info=%p", info);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (info == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
memset(info, 0, sizeof(virDomainJobInfo));
conn = domain->conn;
if (conn->driver->domainGetJobInfo) {
int ret;
ret = conn->driver->domainGetJobInfo (domain, info);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainAbortJob:
* @domain: a domain object
*
* Requests that the current background job be aborted at the
* soonest opportunity. This will block until the job has
* either completed, or aborted.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainAbortJob(virDomainPtr domain)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainAbortJob) {
int ret;
ret = conn->driver->domainAbortJob(domain);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainMigrateSetMaxDowntime:
* @domain: a domain object
* @downtime: maximum tolerable downtime for live migration, in milliseconds
* @flags: fine-tuning flags, currently unused, use 0
*
* Sets maximum tolerable time for which the domain is allowed to be paused
* at the end of live migration. It's supposed to be called while the domain is
* being live-migrated as a reaction to migration progress.
*
* Returns 0 in case of success, -1 otherwise.
*/
int
virDomainMigrateSetMaxDowntime(virDomainPtr domain,
unsigned long long downtime,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "downtime=%llu, flags=%x", downtime, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigrateSetMaxDowntime) {
if (conn->driver->domainMigrateSetMaxDowntime(domain, downtime, flags) < 0)
goto error;
return 0;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainMigrateSetMaxSpeed:
* @domain: a domain object
* @bandwidth: migration bandwidth limit in Mbps
* @flags: fine-tuning flags, currently unused, use 0
*
* The maximum bandwidth (in Mbps) that will be used to do migration
* can be specified with the bandwidth parameter. Not all hypervisors
* will support a bandwidth cap
*
* Returns 0 in case of success, -1 otherwise.
*/
int
virDomainMigrateSetMaxSpeed(virDomainPtr domain,
unsigned long bandwidth,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "bandwidth=%lu, flags=%x", bandwidth, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigrateSetMaxSpeed) {
if (conn->driver->domainMigrateSetMaxSpeed(domain, bandwidth, flags) < 0)
goto error;
return 0;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainMigrateGetMaxSpeed:
* @domain: a domain object
* @bandwidth: return value of current migration bandwidth limit in Mbps
* @flags: fine-tuning flags, currently unused, use 0
*
* Get the current maximum bandwidth (in Mbps) that will be used if the
* domain is migrated. Not all hypervisors will support a bandwidth limit.
*
* Returns 0 in case of success, -1 otherwise.
*/
int
virDomainMigrateGetMaxSpeed(virDomainPtr domain,
unsigned long *bandwidth,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "bandwidth = %p, flags=%x", bandwidth, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (!bandwidth) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainMigrateGetMaxSpeed) {
if (conn->driver->domainMigrateGetMaxSpeed(domain, bandwidth, flags) < 0)
goto error;
return 0;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectDomainEventRegisterAny:
* @conn: pointer to the connection
* @dom: pointer to the domain
* @eventID: the event type to receive
* @cb: callback to the function handling domain events
* @opaque: opaque data to pass on to the callback
* @freecb: optional function to deallocate opaque when not used anymore
*
* Adds a callback to receive notifications of arbitrary domain events
* occurring on a domain.
*
* If dom is NULL, then events will be monitored for any domain. If dom
* is non-NULL, then only the specific domain will be monitored
*
* Most types of event have a callback providing a custom set of parameters
* for the event. When registering an event, it is thus neccessary to use
* the VIR_DOMAIN_EVENT_CALLBACK() macro to cast the supplied function pointer
* to match the signature of this method.
*
* The virDomainPtr object handle passed into the callback upon delivery
* of an event is only valid for the duration of execution of the callback.
* If the callback wishes to keep the domain object after the callback returns,
* it shall take a reference to it, by calling virDomainRef.
* The reference can be released once the object is no longer required
* by calling virDomainFree.
*
* The return value from this method is a positive integer identifier
* for the callback. To unregister a callback, this callback ID should
* be passed to the virDomainEventUnregisterAny method
*
* Returns a callback identifier on success, -1 on failure
*/
int
virConnectDomainEventRegisterAny(virConnectPtr conn,
virDomainPtr dom,
int eventID,
virConnectDomainEventGenericCallback cb,
void *opaque,
virFreeCallback freecb)
{
VIR_DOMAIN_DEBUG(dom, "conn=%p, eventID=%d, cb=%p, opaque=%p, freecb=%p",
conn, eventID, cb, opaque, freecb);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (dom != NULL &&
!(VIR_IS_CONNECTED_DOMAIN(dom) && dom->conn == conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(conn);
return -1;
}
if (eventID < 0 || eventID >= VIR_DOMAIN_EVENT_ID_LAST || cb == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((conn->driver) && (conn->driver->domainEventRegisterAny)) {
int ret;
ret = conn->driver->domainEventRegisterAny(conn, dom, eventID, cb, opaque, freecb);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectDomainEventDeregisterAny:
* @conn: pointer to the connection
* @callbackID: the callback identifier
*
* Removes an event callback. The callbackID parameter should be the
* vaule obtained from a previous virDomainEventRegisterAny method.
*
* Returns 0 on success, -1 on failure
*/
int
virConnectDomainEventDeregisterAny(virConnectPtr conn,
int callbackID)
{
VIR_DEBUG("conn=%p, callbackID=%d", conn, callbackID);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (callbackID < 0) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if ((conn->driver) && (conn->driver->domainEventDeregisterAny)) {
int ret;
ret = conn->driver->domainEventDeregisterAny(conn, callbackID);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainManagedSave:
* @dom: pointer to the domain
* @flags: bitwise-OR of virDomainSaveRestoreFlags
*
* This method will suspend a domain and save its memory contents to
* a file on disk. After the call, if successful, the domain is not
* listed as running anymore.
* The difference from virDomainSave() is that libvirt is keeping track of
* the saved state itself, and will reuse it once the domain is being
* restarted (automatically or via an explicit libvirt call).
* As a result any running domain is sure to not have a managed saved image.
* This also implies that managed save only works on persistent domains,
* since the domain must still exist in order to use virDomainCreate() to
* restart it.
*
* If @flags includes VIR_DOMAIN_SAVE_BYPASS_CACHE, then libvirt will
* attempt to bypass the file system cache while creating the file, or
* fail if it cannot do so for the given system; this can allow less
* pressure on file system cache, but also risks slowing saves to NFS.
*
* Normally, the managed saved state will remember whether the domain
* was running or paused, and start will resume to the same state.
* Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in
* @flags will override the default saved into the file. These two
* flags are mutually exclusive.
*
* Returns 0 in case of success or -1 in case of failure
*/
int virDomainManagedSave(virDomainPtr dom, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SAVE_RUNNING) && (flags & VIR_DOMAIN_SAVE_PAUSED)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("running and paused flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainManagedSave) {
int ret;
ret = conn->driver->domainManagedSave(dom, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainHasManagedSaveImage:
* @dom: pointer to the domain
* @flags: optional flags currently unused
*
* Check if a domain has a managed save image as created by
* virDomainManagedSave(). Note that any running domain should not have
* such an image, as it should have been removed on restart.
*
* Returns 0 if no image is present, 1 if an image is present, and
* -1 in case of error
*/
int virDomainHasManagedSaveImage(virDomainPtr dom, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (conn->driver->domainHasManagedSaveImage) {
int ret;
ret = conn->driver->domainHasManagedSaveImage(dom, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainManagedSaveRemove:
* @dom: pointer to the domain
* @flags: optional flags currently unused
*
* Remove any managed save image for this domain.
*
* Returns 0 in case of success, and -1 in case of error
*/
int virDomainManagedSaveRemove(virDomainPtr dom, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainManagedSaveRemove) {
int ret;
ret = conn->driver->domainManagedSaveRemove(dom, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotGetName:
* @snapshot: a snapshot object
*
* Get the public name for that snapshot
*
* Returns a pointer to the name or NULL, the string need not be deallocated
* as its lifetime will be the same as the snapshot object.
*/
const char *
virDomainSnapshotGetName(virDomainSnapshotPtr snapshot)
{
VIR_DEBUG("snapshot=%p", snapshot);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return snapshot->name;
}
/**
* virDomainSnapshotGetDomain:
* @snapshot: a snapshot object
*
* Get the domain that a snapshot was created for
*
* Returns the domain or NULL.
*/
virDomainPtr
virDomainSnapshotGetDomain(virDomainSnapshotPtr snapshot)
{
VIR_DEBUG("snapshot=%p", snapshot);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return snapshot->domain;
}
/**
* virDomainSnapshotGetConnect:
* @snapshot: a snapshot object
*
* Get the connection that owns the domain that a snapshot was created for
*
* Returns the connection or NULL.
*/
virConnectPtr
virDomainSnapshotGetConnect(virDomainSnapshotPtr snapshot)
{
VIR_DEBUG("snapshot=%p", snapshot);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return NULL;
}
return snapshot->domain->conn;
}
/**
* virDomainSnapshotCreateXML:
* @domain: a domain object
* @xmlDesc: string containing an XML description of the domain
* @flags: bitwise-OR of virDomainSnapshotCreateFlags
*
* Creates a new snapshot of a domain based on the snapshot xml
* contained in xmlDesc.
*
* If @flags is 0, the domain can be active, in which case the
* snapshot will be a system checkpoint (both disk state and runtime
* VM state such as RAM contents), where reverting to the snapshot is
* the same as resuming from hibernation (TCP connections may have
* timed out, but everything else picks up where it left off); or
* the domain can be inactive, in which case the snapshot includes
* just the disk state prior to booting. The newly created snapshot
* becomes current (see virDomainSnapshotCurrent()), and is a child
* of any previous current snapshot.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE, then this
* is a request to reinstate snapshot metadata that was previously
* discarded, rather than creating a new snapshot. This can be used
* to recreate a snapshot hierarchy on a destination, then remove it
* on the source, in order to allow migration (since migration
* normally fails if snapshot metadata still remains on the source
* machine). When redefining snapshot metadata, the current snapshot
* will not be altered unless the VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT
* flag is also present. It is an error to request the
* VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT flag without
* VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE. On some hypervisors,
* redefining an existing snapshot can be used to alter host-specific
* portions of the domain XML to be used during revert (such as
* backing filenames associated with disk devices), but must not alter
* guest-visible layout. When redefining a snapshot name that does
* not exist, the hypervisor may validate that reverting to the
* snapshot appears to be possible (for example, disk images have
* snapshot contents by the requested name). Not all hypervisors
* support these flags.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA, then the
* domain's disk images are modified according to @xmlDesc, but then
* the just-created snapshot has its metadata deleted. This flag is
* incompatible with VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_HALT, then the domain
* will be inactive after the snapshot completes, regardless of whether
* it was active before; otherwise, a running domain will still be
* running after the snapshot. This flag is invalid on transient domains,
* and is incompatible with VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY, then the
* snapshot will be limited to the disks described in @xmlDesc, and no
* VM state will be saved. For an active guest, the disk image may be
* inconsistent (as if power had been pulled), and specifying this
* with the VIR_DOMAIN_SNAPSHOT_CREATE_HALT flag risks data loss.
*
* Returns an (opaque) virDomainSnapshotPtr on success, NULL on failure.
*/
virDomainSnapshotPtr
virDomainSnapshotCreateXML(virDomainPtr domain,
const char *xmlDesc,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "xmlDesc=%s, flags=%x", xmlDesc, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if (xmlDesc == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT) &&
!(flags & VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("use of current flag requires redefine flag"));
goto error;
}
if ((flags & VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE) &&
(flags & VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("redefine and no metadata flags are mutually exclusive"));
goto error;
}
if ((flags & VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE) &&
(flags & VIR_DOMAIN_SNAPSHOT_CREATE_HALT)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("redefine and halt flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainSnapshotCreateXML) {
virDomainSnapshotPtr ret;
ret = conn->driver->domainSnapshotCreateXML(domain, xmlDesc, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainSnapshotGetXMLDesc:
* @snapshot: a domain snapshot object
* @flags: bitwise-OR of subset of virDomainXMLFlags
*
* Provide an XML description of the domain snapshot.
*
* No security-sensitive data will be included unless @flags contains
* VIR_DOMAIN_XML_SECURE; this flag is rejected on read-only
* connections. For this API, @flags should not contain either
* VIR_DOMAIN_XML_INACTIVE or VIR_DOMAIN_XML_UPDATE_CPU.
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("snapshot=%p, flags=%x", snapshot, flags);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = snapshot->domain->conn;
if ((conn->flags & VIR_CONNECT_RO) && (flags & VIR_DOMAIN_XML_SECURE)) {
virLibConnError(VIR_ERR_OPERATION_DENIED,
_("virDomainSnapshotGetXMLDesc with secure flag"));
goto error;
}
if (conn->driver->domainSnapshotGetXMLDesc) {
char *ret;
ret = conn->driver->domainSnapshotGetXMLDesc(snapshot, flags);
if (!ret)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainSnapshotNum:
* @domain: a domain object
* @flags: bitwise-or of supported virDomainSnapshotListFlags
*
* Provides the number of domain snapshots for this domain.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_ROOTS, then the result is
* filtered to the number of snapshots that have no parents. Likewise,
* if @flags includes VIR_DOMAIN_SNAPSHOT_LIST_LEAVES, then the result is
* filtered to the number of snapshots that have no children. Both flags
* can be used together to find unrelated snapshots.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_METADATA, then the result is
* the number of snapshots that also include metadata that would prevent
* the removal of the last reference to a domain; this value will either
* be 0 or the same value as if the flag were not given.
*
* Returns the number of domain snapshots found or -1 in case of error.
*/
int
virDomainSnapshotNum(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->driver->domainSnapshotNum) {
int ret = conn->driver->domainSnapshotNum(domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotListNames:
* @domain: a domain object
* @names: array to collect the list of names of snapshots
* @nameslen: size of @names
* @flags: bitwise-or of supported virDomainSnapshotListFlags
*
* Collect the list of domain snapshots for the given domain, and store
* their names in @names. Caller is responsible for freeing each member
* of the array. The value to use for @nameslen can be determined by
* virDomainSnapshotNum() with the same @flags.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_ROOTS, then the result is
* filtered to the number of snapshots that have no parents. Likewise,
* if @flags includes VIR_DOMAIN_SNAPSHOT_LIST_LEAVES, then the result is
* filtered to the number of snapshots that have no children. Both flags
* can be used together to find unrelated snapshots.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_METADATA, then the result is
* the number of snapshots that also include metadata that would prevent
* the removal of the last reference to a domain; this value will either
* be 0 or the same value as if the flag were not given.
*
* Returns the number of domain snapshots found or -1 in case of error.
*/
int
virDomainSnapshotListNames(virDomainPtr domain, char **names, int nameslen,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "names=%p, nameslen=%d, flags=%x",
names, nameslen, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if ((names == NULL) || (nameslen < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainSnapshotListNames) {
int ret = conn->driver->domainSnapshotListNames(domain, names,
nameslen, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotNumChildren:
* @snapshot: a domain snapshot object
* @flags: bitwise-or of supported virDomainSnapshotListFlags
*
* Provides the number of child snapshots for this domain snapshot.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS, then the result
* includes all descendants, otherwise it is limited to direct children.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_LEAVES, then the result is
* filtered to the number of snapshots that have no children.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_METADATA, then the result is
* the number of snapshots that also include metadata that would prevent
* the removal of the last reference to a domain; this value will either
* be 0 or the same value as if the flag were not given.
*
* Returns the number of domain snapshots found or -1 in case of error.
*/
int
virDomainSnapshotNumChildren(virDomainSnapshotPtr snapshot, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("snapshot=%p, flags=%x", snapshot, flags);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = snapshot->domain->conn;
if (conn->driver->domainSnapshotNumChildren) {
int ret = conn->driver->domainSnapshotNumChildren(snapshot, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotListChildrenNames:
* @snapshot: a domain snapshot object
* @names: array to collect the list of names of snapshots
* @nameslen: size of @names
* @flags: bitwise-or of supported virDomainSnapshotListFlags
*
* Collect the list of domain snapshots that are children of the given
* snapshot, and store their names in @names. Caller is responsible for
* freeing each member of the array. The value to use for @nameslen can
* be determined by virDomainSnapshotNumChildren() with the same @flags.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS, then the result
* includes all descendants, otherwise it is limited to direct children.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_LEAVES, then the result is
* filtered to the number of snapshots that have no children.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_LIST_METADATA, then the result is
* the number of snapshots that also include metadata that would prevent
* the removal of the last reference to a domain; this value will either
* be 0 or the same value as if the flag were not given.
*
* Returns the number of domain snapshots found or -1 in case of error.
*/
int
virDomainSnapshotListChildrenNames(virDomainSnapshotPtr snapshot,
char **names, int nameslen,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("snapshot=%p, names=%p, nameslen=%d, flags=%x",
snapshot, names, nameslen, flags);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = snapshot->domain->conn;
if ((names == NULL) || (nameslen < 0)) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainSnapshotListChildrenNames) {
int ret = conn->driver->domainSnapshotListChildrenNames(snapshot,
names,
nameslen,
flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotLookupByName:
* @domain: a domain object
* @name: name for the domain snapshot
* @flags: unused flag parameters; callers should pass 0
*
* Try to lookup a domain snapshot based on its name.
*
* Returns a domain snapshot object or NULL in case of failure. If the
* domain snapshot cannot be found, then the VIR_ERR_NO_DOMAIN_SNAPSHOT
* error is raised.
*/
virDomainSnapshotPtr
virDomainSnapshotLookupByName(virDomainPtr domain,
const char *name,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "name=%s, flags=%x", name, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if (name == NULL) {
virLibConnError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (conn->driver->domainSnapshotLookupByName) {
virDomainSnapshotPtr dom;
dom = conn->driver->domainSnapshotLookupByName(domain, name, flags);
if (!dom)
goto error;
return dom;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainHasCurrentSnapshot:
* @domain: pointer to the domain object
* @flags: unused flag parameters; callers should pass 0
*
* Determine if the domain has a current snapshot.
*
* Returns 1 if such snapshot exists, 0 if it doesn't, -1 on error.
*/
int
virDomainHasCurrentSnapshot(virDomainPtr domain, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = domain->conn;
if (conn->driver->domainHasCurrentSnapshot) {
int ret = conn->driver->domainHasCurrentSnapshot(domain, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotCurrent:
* @domain: a domain object
* @flags: unused flag parameters; callers should pass 0
*
* Get the current snapshot for a domain, if any.
*
* Returns a domain snapshot object or NULL in case of failure. If the
* current domain snapshot cannot be found, then the VIR_ERR_NO_DOMAIN_SNAPSHOT
* error is raised.
*/
virDomainSnapshotPtr
virDomainSnapshotCurrent(virDomainPtr domain,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = domain->conn;
if (conn->driver->domainSnapshotCurrent) {
virDomainSnapshotPtr snap;
snap = conn->driver->domainSnapshotCurrent(domain, flags);
if (!snap)
goto error;
return snap;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainSnapshotGetParent:
* @snapshot: a snapshot object
* @flags: unused flag parameters; callers should pass 0
*
* Get the parent snapshot for @snapshot, if any.
*
* Returns a domain snapshot object or NULL in case of failure. If the
* given snapshot is a root (no parent), then the VIR_ERR_NO_DOMAIN_SNAPSHOT
* error is raised.
*/
virDomainSnapshotPtr
virDomainSnapshotGetParent(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("snapshot=%p, flags=%x", snapshot, flags);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return NULL;
}
conn = snapshot->domain->conn;
if (conn->driver->domainSnapshotGetParent) {
virDomainSnapshotPtr snap;
snap = conn->driver->domainSnapshotGetParent(snapshot, flags);
if (!snap)
goto error;
return snap;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return NULL;
}
/**
* virDomainRevertToSnapshot:
* @snapshot: a domain snapshot object
* @flags: bitwise-OR of virDomainSnapshotRevertFlags
*
* Revert the domain to a given snapshot.
*
* Normally, the domain will revert to the same state the domain was
* in while the snapshot was taken (whether inactive, running, or
* paused), except that disk snapshots default to reverting to
* inactive state. Including VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING in
* @flags overrides the snapshot state to guarantee a running domain
* after the revert; or including VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED in
* @flags guarantees a paused domain after the revert. These two
* flags are mutually exclusive. While a persistent domain does not
* need either flag, it is not possible to revert a transient domain
* into an inactive state, so transient domains require the use of one
* of these two flags.
*
* Reverting to any snapshot discards all configuration changes made since
* the last snapshot. Additionally, reverting to a snapshot from a running
* domain is a form of data loss, since it discards whatever is in the
* guest's RAM at the time. Since the very nature of keeping snapshots
* implies the intent to roll back state, no additional confirmation is
* normally required for these lossy effects.
*
* However, there are two particular situations where reverting will
* be refused by default, and where @flags must include
* VIR_DOMAIN_SNAPSHOT_REVERT_FORCE to acknowledge the risks. 1) Any
* attempt to revert to a snapshot that lacks the metadata to perform
* ABI compatibility checks (generally the case for snapshots that
* lack a full <domain> when listed by virDomainSnapshotGetXMLDesc(),
* such as those created prior to libvirt 0.9.5). 2) Any attempt to
* revert a running domain to an active state that requires starting a
* new hypervisor instance rather than reusing the existing hypervisor
* (since this would terminate all connections to the domain, such as
* such as VNC or Spice graphics) - this condition arises from active
* snapshots that are provably ABI incomaptible, as well as from
* inactive snapshots with a @flags request to start the domain after
* the revert.
*
* Returns 0 if the creation is successful, -1 on error.
*/
int
virDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("snapshot=%p, flags=%x", snapshot, flags);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = snapshot->domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING) &&
(flags & VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("running and paused flags are mutually exclusive"));
goto error;
}
if (conn->driver->domainRevertToSnapshot) {
int ret = conn->driver->domainRevertToSnapshot(snapshot, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotDelete:
* @snapshot: a domain snapshot object
* @flags: bitwise-or of supported virDomainSnapshotDeleteFlags
*
* Delete the snapshot.
*
* If @flags is 0, then just this snapshot is deleted, and changes
* from this snapshot are automatically merged into children
* snapshots. If @flags includes VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN,
* then this snapshot and any descendant snapshots are deleted. If
* @flags includes VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY, then any
* descendant snapshots are deleted, but this snapshot remains. These
* two flags are mutually exclusive.
*
* If @flags includes VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY, then
* any snapshot metadata tracked by libvirt is removed while keeping
* the snapshot contents intact; if a hypervisor does not require any
* libvirt metadata to track snapshots, then this flag is silently
* ignored.
*
* Returns 0 if the selected snapshot(s) were successfully deleted,
* -1 on error.
*/
int
virDomainSnapshotDelete(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("snapshot=%p, flags=%x", snapshot, flags);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = snapshot->domain->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibConnError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if ((flags & VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN) &&
(flags & VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("children and children_only flags are "
"mutually exclusive"));
goto error;
}
if (conn->driver->domainSnapshotDelete) {
int ret = conn->driver->domainSnapshotDelete(snapshot, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainSnapshotFree:
* @snapshot: a domain snapshot object
*
* Free the domain snapshot object. The snapshot itself is not modified.
* The data structure is freed and should not be used thereafter.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virDomainSnapshotFree(virDomainSnapshotPtr snapshot)
{
VIR_DEBUG("snapshot=%p", snapshot);
virResetLastError();
if (!VIR_IS_DOMAIN_SNAPSHOT(snapshot)) {
virLibDomainSnapshotError(VIR_ERR_INVALID_DOMAIN_SNAPSHOT,
__FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (virUnrefDomainSnapshot(snapshot) < 0) {
virDispatchError(NULL);
return -1;
}
return 0;
}
/**
* virDomainOpenConsole:
* @dom: a domain object
* @dev_name: the console, serial or parallel port device alias, or NULL
* @st: a stream to associate with the console
* @flags: unused, pass 0
*
* This opens the backend associated with a console, serial or
* parallel port device on a guest, if the backend is supported.
* If the @dev_name is omitted, then the first console or serial
* device is opened. The console is associated with the passed
* in @st stream, which should have been opened in non-blocking
* mode for bi-directional I/O.
*
* returns 0 if the console was opened, -1 on error
*/
int virDomainOpenConsole(virDomainPtr dom,
const char *dev_name,
virStreamPtr st,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "dev_name=%s, st=%p, flags=%x",
NULLSTR(dev_name), st, flags);
virResetLastError();
if (!VIR_IS_DOMAIN(dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (conn->driver->domainOpenConsole) {
int ret;
ret = conn->driver->domainOpenConsole(dom, dev_name, st, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virDomainBlockJobAbort:
* @dom: pointer to domain object
* @disk: path to the block device, or device shorthand
* @flags: currently unused, for future extension
*
* Cancel the active block job on the given disk.
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Returns -1 in case of failure, 0 when successful.
*/
int virDomainBlockJobAbort(virDomainPtr dom, const char *disk,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%p, flags=%x", disk, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!disk) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("disk is NULL"));
goto error;
}
if (conn->driver->domainBlockJobAbort) {
int ret;
ret = conn->driver->domainBlockJobAbort(dom, disk, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainGetBlockJobInfo:
* @dom: pointer to domain object
* @disk: path to the block device, or device shorthand
* @info: pointer to a virDomainBlockJobInfo structure
* @flags: currently unused, for future extension
*
* Request block job information for the given disk. If an operation is active
* @info will be updated with the current progress.
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Returns -1 in case of failure, 0 when nothing found, 1 when info was found.
*/
int virDomainGetBlockJobInfo(virDomainPtr dom, const char *disk,
virDomainBlockJobInfoPtr info, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%p, info=%p, flags=%x", disk, info, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (!disk) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("disk is NULL"));
goto error;
}
if (!info) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("info is NULL"));
goto error;
}
if (conn->driver->domainGetBlockJobInfo) {
int ret;
ret = conn->driver->domainGetBlockJobInfo(dom, disk, info, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainBlockJobSetSpeed:
* @dom: pointer to domain object
* @disk: path to the block device, or device shorthand
* @bandwidth: specify bandwidth limit in Mbps
* @flags: currently unused, for future extension
*
* Set the maximimum allowable bandwidth that a block job may consume. If
* bandwidth is 0, the limit will revert to the hypervisor default.
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* Returns -1 in case of failure, 0 when successful.
*/
int virDomainBlockJobSetSpeed(virDomainPtr dom, const char *disk,
unsigned long bandwidth, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%p, bandwidth=%lu, flags=%x",
disk, bandwidth, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!disk) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("disk is NULL"));
goto error;
}
if (conn->driver->domainBlockJobSetSpeed) {
int ret;
ret = conn->driver->domainBlockJobSetSpeed(dom, disk, bandwidth, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainBlockPull:
* @dom: pointer to domain object
* @disk: path to the block device, or device shorthand
* @bandwidth: (optional) specify copy bandwidth limit in Mbps
* @flags: currently unused, for future extension
*
* Populate a disk image with data from its backing image. Once all data from
* its backing image has been pulled, the disk no longer depends on a backing
* image. This function pulls data for the entire device in the background.
* Progress of the operation can be checked with virDomainGetBlockJobInfo() and
* the operation can be aborted with virDomainBlockJobAbort(). When finished,
* an asynchronous event is raised to indicate the final status.
*
* The @disk parameter is either an unambiguous source name of the
* block device (the <source file='...'/> sub-element, such as
* "/path/to/image"), or (since 0.9.5) the device target shorthand
* (the <target dev='...'/> sub-element, such as "xvda"). Valid names
* can be found by calling virDomainGetXMLDesc() and inspecting
* elements within //domain/devices/disk.
*
* The maximum bandwidth (in Mbps) that will be used to do the copy can be
* specified with the bandwidth parameter. If set to 0, libvirt will choose a
* suitable default. Some hypervisors do not support this feature and will
* return an error if bandwidth is not 0.
*
* Returns 0 if the operation has started, -1 on failure.
*/
int virDomainBlockPull(virDomainPtr dom, const char *disk,
unsigned long bandwidth, unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(dom, "disk=%p, bandwidth=%lu, flags=%x",
disk, bandwidth, flags);
virResetLastError();
if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
conn = dom->conn;
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!disk) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("disk is NULL"));
goto error;
}
if (conn->driver->domainBlockPull) {
int ret;
ret = conn->driver->domainBlockPull(dom, disk, bandwidth, flags);
if (ret < 0)
goto error;
return ret;
}
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virDomainOpenGraphics:
* @dom: pointer to domain object
* @idx: index of graphics config to open
* @fd: file descriptor to attach graphics to
* @flags: flags to control open operation
*
* This will attempt to connect the file descriptor @fd, to
* the graphics backend of @dom. If @dom has multiple graphics
* backends configured, then @idx will determine which one is
* opened, starting from @idx 0.
*
* To disable any authentication, pass the VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH
* constant for @flags.
*
* The caller should use an anonymous socketpair to open
* @fd before invocation.
*
* This method can only be used when connected to a local
* libvirt hypervisor, over a UNIX domain socket. Attempts
* to use this method over a TCP connection will always fail
*
* Returns 0 on success, -1 on failure
*/
int virDomainOpenGraphics(virDomainPtr dom,
unsigned int idx,
int fd,
unsigned int flags)
{
struct stat sb;
VIR_DOMAIN_DEBUG(dom, "idx=%u, fd=%d, flags=%x",
idx, fd, flags);
virResetLastError();
if (!VIR_IS_DOMAIN(dom)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (fd < 0) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
if (fstat(fd, &sb) < 0) {
virReportSystemError(errno,
_("Unable to access file descriptor %d"), fd);
goto error;
}
if (!S_ISSOCK(sb.st_mode)) {
virLibDomainError(VIR_ERR_INVALID_ARG,
_("File descriptor %d must be a socket"), fd);
goto error;
}
if (dom->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
}
if (!VIR_DRV_SUPPORTS_FEATURE(dom->conn->driver, dom->conn,
VIR_DRV_FEATURE_FD_PASSING)) {
virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
goto error;
}
if (dom->conn->driver->domainOpenGraphics) {
int ret;
ret = dom->conn->driver->domainOpenGraphics(dom, idx, fd, flags);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(dom->conn);
return -1;
}
/**
* virConnectSetKeepAlive:
* @conn: pointer to a hypervisor connection
* @interval: number of seconds of inactivity before a keepalive message is sent
* @count: number of messages that can be sent in a row
*
* Start sending keepalive messages after interval second of inactivity and
* consider the connection to be broken when no response is received after
* count keepalive messages sent in a row. In other words, sending count + 1
* keepalive message results in closing the connection. When interval is <= 0,
* no keepalive messages will be sent. When count is 0, the connection will be
* automatically closed after interval seconds of inactivity without sending
* any keepalive messages.
*
* Note: client has to implement and run event loop to be able to use keepalive
* messages. Failure to do so may result in connections being closed
* unexpectedly.
*
* Returns -1 on error, 0 on success, 1 when remote party doesn't support
* keepalive messages.
*/
int virConnectSetKeepAlive(virConnectPtr conn,
int interval,
unsigned int count)
{
int ret = -1;
VIR_DEBUG("conn=%p, interval=%d, count=%u", conn, interval, count);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (interval <= 0) {
virLibConnError(VIR_ERR_INVALID_ARG,
_("negative or zero interval make no sense"));
goto error;
}
if (conn->driver->setKeepAlive) {
ret = conn->driver->setKeepAlive(conn, interval, count);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectIsAlive:
* @conn: pointer to the connection object
*
* Determine if the connection to the hypervisor is still alive
*
* A connection will be classed as alive if it is either local, or running
* over a channel (TCP or UNIX socket) which is not closed.
*
* Returns 1 if alive, 0 if dead, -1 on error
*/
int virConnectIsAlive(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (conn->driver->isAlive) {
int ret;
ret = conn->driver->isAlive(conn);
if (ret < 0)
goto error;
return ret;
}
virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
error:
virDispatchError(conn);
return -1;
}
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