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a88916665d
libvirt/src/xen/xen_driver.c
Yufang Zhang a88916665d xen: check if device is assigned to guest before reattaching 
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=664059

Reattaching pci device back to host without destroying guest or
detaching device from guest would cause host to crash. This patch adds
a check before doing device reattach. If the device is being assigned
to guest, libvirt refuses to reattach device to host. The patch only
works for Xen, for it just checks xenstore to get pci device
information.

Signed-off-by: Yufang Zhang <yuzhang@redhat.com>
2011-04-28 14:45:31 -06:00

2405 lines
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/*
* xen_driver.c: Unified Xen driver.
*
* Copyright (C) 2007-2011 Red Hat, Inc.
*
* See COPYING.LIB for the License of this software
*
* Richard W.M. Jones <rjones@redhat.com>
*/
#include <config.h>
/* Note:
*
* This driver provides a unified interface to the five
* separate underlying Xen drivers (xen_internal,
* xend_internal, xs_internal and xm_internal). Historically
* the body of libvirt.c handled the five Xen drivers,
* and contained Xen-specific code.
*/
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <fcntl.h>
#include <xen/dom0_ops.h>
#include <libxml/uri.h>
#include "virterror_internal.h"
#include "logging.h"
#include "datatypes.h"
#include "xen_driver.h"
#include "xen_sxpr.h"
#include "xen_xm.h"
#include "xen_hypervisor.h"
#include "xend_internal.h"
#include "xs_internal.h"
#include "xm_internal.h"
#if WITH_XEN_INOTIFY
# include "xen_inotify.h"
#endif
#include "xml.h"
#include "util.h"
#include "memory.h"
#include "node_device_conf.h"
#include "pci.h"
#include "uuid.h"
#include "fdstream.h"
#include "files.h"
#include "command.h"
#define VIR_FROM_THIS VIR_FROM_XEN
static int
xenUnifiedNodeGetInfo (virConnectPtr conn, virNodeInfoPtr info);
static int
xenUnifiedDomainGetMaxVcpus (virDomainPtr dom);
static int
xenUnifiedDomainGetVcpus (virDomainPtr dom,
virVcpuInfoPtr info, int maxinfo,
unsigned char *cpumaps, int maplen);
/* The five Xen drivers below us. */
static struct xenUnifiedDriver const * const drivers[XEN_UNIFIED_NR_DRIVERS] = {
[XEN_UNIFIED_HYPERVISOR_OFFSET] = &xenHypervisorDriver,
[XEN_UNIFIED_XEND_OFFSET] = &xenDaemonDriver,
[XEN_UNIFIED_XS_OFFSET] = &xenStoreDriver,
[XEN_UNIFIED_XM_OFFSET] = &xenXMDriver,
#if WITH_XEN_INOTIFY
[XEN_UNIFIED_INOTIFY_OFFSET] = &xenInotifyDriver,
#endif
};
#if defined WITH_LIBVIRTD || defined __sun
static int inside_daemon;
#endif
#define xenUnifiedError(code, ...) \
virReportErrorHelper(VIR_FROM_XEN, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
/**
* xenNumaInit:
* @conn: pointer to the hypervisor connection
*
* Initializer for previous variables. We currently assume that
* the number of physical CPU and the number of NUMA cell is fixed
* until reboot which might be false in future Xen implementations.
*/
static void
xenNumaInit(virConnectPtr conn) {
virNodeInfo nodeInfo;
xenUnifiedPrivatePtr priv;
int ret;
ret = xenUnifiedNodeGetInfo(conn, &nodeInfo);
if (ret < 0)
return;
priv = conn->privateData;
priv->nbNodeCells = nodeInfo.nodes;
priv->nbNodeCpus = nodeInfo.cpus;
}
/**
* xenDomainUsedCpus:
* @dom: the domain
*
* Analyze which set of CPUs are used by the domain and
* return a string providing the ranges.
*
* Returns the string which needs to be freed by the caller or
* NULL if the domain uses all CPU or in case of error.
*/
char *
xenDomainUsedCpus(virDomainPtr dom)
{
char *res = NULL;
int ncpus;
int nb_vcpu;
char *cpulist = NULL;
unsigned char *cpumap = NULL;
size_t cpumaplen;
int nb = 0;
int n, m;
virVcpuInfoPtr cpuinfo = NULL;
virNodeInfo nodeinfo;
xenUnifiedPrivatePtr priv;
if (!VIR_IS_CONNECTED_DOMAIN(dom))
return (NULL);
priv = dom->conn->privateData;
if (priv->nbNodeCpus <= 0)
return(NULL);
nb_vcpu = xenUnifiedDomainGetMaxVcpus(dom);
if (nb_vcpu <= 0)
return(NULL);
if (xenUnifiedNodeGetInfo(dom->conn, &nodeinfo) < 0)
return(NULL);
if (VIR_ALLOC_N(cpulist, priv->nbNodeCpus) < 0) {
virReportOOMError();
goto done;
}
if (VIR_ALLOC_N(cpuinfo, nb_vcpu) < 0) {
virReportOOMError();
goto done;
}
cpumaplen = VIR_CPU_MAPLEN(VIR_NODEINFO_MAXCPUS(nodeinfo));
if (xalloc_oversized(nb_vcpu, cpumaplen) ||
VIR_ALLOC_N(cpumap, nb_vcpu * cpumaplen) < 0) {
virReportOOMError();
goto done;
}
if ((ncpus = xenUnifiedDomainGetVcpus(dom, cpuinfo, nb_vcpu,
cpumap, cpumaplen)) >= 0) {
for (n = 0 ; n < ncpus ; n++) {
for (m = 0 ; m < priv->nbNodeCpus; m++) {
if ((cpulist[m] == 0) &&
(VIR_CPU_USABLE(cpumap, cpumaplen, n, m))) {
cpulist[m] = 1;
nb++;
/* if all CPU are used just return NULL */
if (nb == priv->nbNodeCpus)
goto done;
}
}
}
res = virDomainCpuSetFormat(cpulist, priv->nbNodeCpus);
}
done:
VIR_FREE(cpulist);
VIR_FREE(cpumap);
VIR_FREE(cpuinfo);
return(res);
}
#ifdef WITH_LIBVIRTD
static int
xenInitialize (int privileged ATTRIBUTE_UNUSED)
{
inside_daemon = 1;
return 0;
}
static virStateDriver state_driver = {
.name = "Xen",
.initialize = xenInitialize,
};
#endif
/*----- Dispatch functions. -----*/
/* These dispatch functions follow the model used historically
* by libvirt.c -- trying each low-level Xen driver in turn
* until one succeeds. However since we know what low-level
* drivers can perform which functions, it is probably better
* in future to optimise these dispatch functions to just call
* the single function (or small number of appropriate functions)
* in the low level drivers directly.
*/
static int
xenUnifiedProbe (void)
{
#ifdef __linux__
if (virFileExists("/proc/xen"))
return 1;
#endif
#ifdef __sun
int fd;
if ((fd = open("/dev/xen/domcaps", O_RDONLY)) >= 0) {
VIR_FORCE_CLOSE(fd);
return 1;
}
#endif
return 0;
}
#ifdef WITH_LIBXL
static int
xenUnifiedXendProbe (void)
{
virCommandPtr cmd;
int status;
int ret = 0;
cmd = virCommandNewArgList("/usr/sbin/xend", "status", NULL);
if (virCommandRun(cmd, &status) == 0 && status == 0)
ret = 1;
virCommandFree(cmd);
return ret;
}
#endif
static virDrvOpenStatus
xenUnifiedOpen (virConnectPtr conn, virConnectAuthPtr auth, int flags)
{
int i, ret = VIR_DRV_OPEN_DECLINED;
xenUnifiedPrivatePtr priv;
virDomainEventCallbackListPtr cbList;
#ifdef __sun
/*
* Only the libvirtd instance can open this driver.
* Everything else falls back to the remote driver.
*/
if (!inside_daemon)
return VIR_DRV_OPEN_DECLINED;
#endif
if (conn->uri == NULL) {
if (!xenUnifiedProbe())
return VIR_DRV_OPEN_DECLINED;
conn->uri = xmlParseURI("xen:///");
if (!conn->uri) {
virReportOOMError();
return VIR_DRV_OPEN_ERROR;
}
} else {
if (conn->uri->scheme) {
/* Decline any scheme which isn't "xen://" or "http://". */
if (STRCASENEQ(conn->uri->scheme, "xen") &&
STRCASENEQ(conn->uri->scheme, "http"))
return VIR_DRV_OPEN_DECLINED;
/* Return an error if the path isn't '' or '/' */
if (conn->uri->path &&
STRNEQ(conn->uri->path, "") &&
STRNEQ(conn->uri->path, "/")) {
xenUnifiedError(VIR_ERR_INTERNAL_ERROR,
_("unexpected Xen URI path '%s', try xen:///"),
conn->uri->path);
return VIR_DRV_OPEN_ERROR;
}
/* Decline any xen:// URI with a server specified, allowing remote
* driver to handle, but keep any http:/// URIs */
if (STRCASEEQ(conn->uri->scheme, "xen") &&
conn->uri->server)
return VIR_DRV_OPEN_DECLINED;
} else {
/* Special case URI for Xen driver only:
*
* Treat a plain path as a Xen UNIX socket path, and give
* error unless path is absolute
*/
if (!conn->uri->path || conn->uri->path[0] != '/') {
xenUnifiedError(VIR_ERR_INTERNAL_ERROR,
_("unexpected Xen URI path '%s', try ///var/lib/xen/xend-socket"),
NULLSTR(conn->uri->path));
return VIR_DRV_OPEN_ERROR;
}
}
}
#ifdef WITH_LIBXL
/* Decline xen:// URI if xend is not running and libxenlight
* driver is potentially available. */
if (!xenUnifiedXendProbe())
return VIR_DRV_OPEN_DECLINED;
#endif
/* We now know the URI is definitely for this driver, so beyond
* here, don't return DECLINED, always use ERROR */
/* Allocate per-connection private data. */
if (VIR_ALLOC(priv) < 0) {
virReportOOMError();
return VIR_DRV_OPEN_ERROR;
}
if (virMutexInit(&priv->lock) < 0) {
xenUnifiedError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot initialize mutex"));
VIR_FREE(priv);
return VIR_DRV_OPEN_ERROR;
}
/* Allocate callback list */
if (VIR_ALLOC(cbList) < 0) {
virReportOOMError();
virMutexDestroy(&priv->lock);
VIR_FREE(priv);
return VIR_DRV_OPEN_ERROR;
}
conn->privateData = priv;
priv->domainEventCallbacks = cbList;
priv->handle = -1;
priv->xendConfigVersion = -1;
priv->xshandle = NULL;
/* Hypervisor is only run with privilege & required to succeed */
if (xenHavePrivilege()) {
VIR_DEBUG0("Trying hypervisor sub-driver");
if (drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->open(conn, auth, flags) ==
VIR_DRV_OPEN_SUCCESS) {
VIR_DEBUG0("Activated hypervisor sub-driver");
priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET] = 1;
}
}
/* XenD is required to succeed if privileged */
VIR_DEBUG0("Trying XenD sub-driver");
if (drivers[XEN_UNIFIED_XEND_OFFSET]->open(conn, auth, flags) ==
VIR_DRV_OPEN_SUCCESS) {
VIR_DEBUG0("Activated XenD sub-driver");
priv->opened[XEN_UNIFIED_XEND_OFFSET] = 1;
/* XenD is active, so try the xm & xs drivers too, both requird to
* succeed if root, optional otherwise */
if (priv->xendConfigVersion <= 2) {
VIR_DEBUG0("Trying XM sub-driver");
if (drivers[XEN_UNIFIED_XM_OFFSET]->open(conn, auth, flags) ==
VIR_DRV_OPEN_SUCCESS) {
VIR_DEBUG0("Activated XM sub-driver");
priv->opened[XEN_UNIFIED_XM_OFFSET] = 1;
}
}
VIR_DEBUG0("Trying XS sub-driver");
if (drivers[XEN_UNIFIED_XS_OFFSET]->open(conn, auth, flags) ==
VIR_DRV_OPEN_SUCCESS) {
VIR_DEBUG0("Activated XS sub-driver");
priv->opened[XEN_UNIFIED_XS_OFFSET] = 1;
} else {
if (xenHavePrivilege())
goto fail; /* XS is mandatory when privileged */
}
} else {
if (xenHavePrivilege()) {
goto fail; /* XenD is mandatory when privileged */
} else {
VIR_DEBUG0("Handing off for remote driver");
ret = VIR_DRV_OPEN_DECLINED; /* Let remote_driver try instead */
goto clean;
}
}
xenNumaInit(conn);
if (!(priv->caps = xenHypervisorMakeCapabilities(conn))) {
VIR_DEBUG0("Failed to make capabilities");
goto fail;
}
#if WITH_XEN_INOTIFY
if (xenHavePrivilege()) {
VIR_DEBUG0("Trying Xen inotify sub-driver");
if (drivers[XEN_UNIFIED_INOTIFY_OFFSET]->open(conn, auth, flags) ==
VIR_DRV_OPEN_SUCCESS) {
VIR_DEBUG0("Activated Xen inotify sub-driver");
priv->opened[XEN_UNIFIED_INOTIFY_OFFSET] = 1;
}
}
#endif
return VIR_DRV_OPEN_SUCCESS;
fail:
ret = VIR_DRV_OPEN_ERROR;
clean:
VIR_DEBUG0("Failed to activate a mandatory sub-driver");
for (i = 0 ; i < XEN_UNIFIED_NR_DRIVERS ; i++)
if (priv->opened[i]) drivers[i]->close(conn);
virMutexDestroy(&priv->lock);
VIR_FREE(priv);
conn->privateData = NULL;
return ret;
}
#define GET_PRIVATE(conn) \
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) (conn)->privateData
static int
xenUnifiedClose (virConnectPtr conn)
{
GET_PRIVATE(conn);
int i;
virCapabilitiesFree(priv->caps);
virDomainEventCallbackListFree(priv->domainEventCallbacks);
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->close)
(void) drivers[i]->close (conn);
virMutexDestroy(&priv->lock);
VIR_FREE(conn->privateData);
return 0;
}
#define HV_VERSION ((DOM0_INTERFACE_VERSION >> 24) * 1000000 + \
((DOM0_INTERFACE_VERSION >> 16) & 0xFF) * 1000 + \
(DOM0_INTERFACE_VERSION & 0xFFFF))
unsigned long xenUnifiedVersion(void)
{
return HV_VERSION;
}
static const char *
xenUnifiedType (virConnectPtr conn)
{
GET_PRIVATE(conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i])
return "Xen";
return NULL;
}
/* Which features are supported by this driver? */
static int
xenUnifiedSupportsFeature (virConnectPtr conn ATTRIBUTE_UNUSED, int feature)
{
switch (feature) {
case VIR_DRV_FEATURE_MIGRATION_V1:
case VIR_DRV_FEATURE_MIGRATION_DIRECT:
return 1;
default:
return 0;
}
}
static int
xenUnifiedGetVersion (virConnectPtr conn, unsigned long *hvVer)
{
GET_PRIVATE(conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->version &&
drivers[i]->version (conn, hvVer) == 0)
return 0;
return -1;
}
static int
xenUnifiedIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED)
{
return 0;
}
static int
xenUnifiedIsSecure(virConnectPtr conn)
{
GET_PRIVATE(conn);
int ret = 1;
/* All drivers are secure, except for XenD over TCP */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET] &&
priv->addrfamily != AF_UNIX)
ret = 0;
return ret;
}
int
xenUnifiedGetMaxVcpus (virConnectPtr conn, const char *type)
{
GET_PRIVATE(conn);
if (type && STRCASENEQ (type, "Xen")) {
xenUnifiedError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET])
return xenHypervisorGetMaxVcpus (conn, type);
else {
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
}
static int
xenUnifiedNodeGetInfo (virConnectPtr conn, virNodeInfoPtr info)
{
GET_PRIVATE(conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->nodeGetInfo &&
drivers[i]->nodeGetInfo (conn, info) == 0)
return 0;
return -1;
}
static char *
xenUnifiedGetCapabilities (virConnectPtr conn)
{
xenUnifiedPrivatePtr priv = conn->privateData;
char *xml;
if (!(xml = virCapabilitiesFormatXML(priv->caps))) {
virReportOOMError();
return NULL;
}
return xml;
}
static int
xenUnifiedListDomains (virConnectPtr conn, int *ids, int maxids)
{
GET_PRIVATE(conn);
int ret;
/* Try xenstore. */
if (priv->opened[XEN_UNIFIED_XS_OFFSET]) {
ret = xenStoreListDomains (conn, ids, maxids);
if (ret >= 0) return ret;
}
/* Try HV. */
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET]) {
ret = xenHypervisorListDomains (conn, ids, maxids);
if (ret >= 0) return ret;
}
/* Try xend. */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonListDomains (conn, ids, maxids);
if (ret >= 0) return ret;
}
return -1;
}
static int
xenUnifiedNumOfDomains (virConnectPtr conn)
{
GET_PRIVATE(conn);
int ret;
/* Try xenstore. */
if (priv->opened[XEN_UNIFIED_XS_OFFSET]) {
ret = xenStoreNumOfDomains (conn);
if (ret >= 0) return ret;
}
/* Try HV. */
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET]) {
ret = xenHypervisorNumOfDomains (conn);
if (ret >= 0) return ret;
}
/* Try xend. */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonNumOfDomains (conn);
if (ret >= 0) return ret;
}
return -1;
}
static virDomainPtr
xenUnifiedDomainCreateXML (virConnectPtr conn,
const char *xmlDesc, unsigned int flags)
{
GET_PRIVATE(conn);
int i;
virDomainPtr ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainCreateXML) {
ret = drivers[i]->domainCreateXML (conn, xmlDesc, flags);
if (ret) return ret;
}
return NULL;
}
/* Assumption made in underlying drivers:
* If the domain is "not found" and there is no other error, then
* the Lookup* functions return a NULL but do not set virterror.
*/
static virDomainPtr
xenUnifiedDomainLookupByID (virConnectPtr conn, int id)
{
GET_PRIVATE(conn);
virDomainPtr ret;
/* Reset any connection-level errors in virterror first, in case
* there is one hanging around from a previous call.
*/
virConnResetLastError (conn);
/* Try hypervisor/xenstore combo. */
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET]) {
ret = xenHypervisorLookupDomainByID (conn, id);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Try xend. */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonLookupByID (conn, id);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Not found. */
xenUnifiedError(VIR_ERR_NO_DOMAIN, __FUNCTION__);
return NULL;
}
static virDomainPtr
xenUnifiedDomainLookupByUUID (virConnectPtr conn,
const unsigned char *uuid)
{
GET_PRIVATE(conn);
virDomainPtr ret;
/* Reset any connection-level errors in virterror first, in case
* there is one hanging around from a previous call.
*/
virConnResetLastError (conn);
/* Try hypervisor/xenstore combo. */
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET]) {
ret = xenHypervisorLookupDomainByUUID (conn, uuid);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Try xend. */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonLookupByUUID (conn, uuid);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Try XM for inactive domains. */
if (priv->opened[XEN_UNIFIED_XM_OFFSET]) {
ret = xenXMDomainLookupByUUID (conn, uuid);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Not found. */
xenUnifiedError(VIR_ERR_NO_DOMAIN, __FUNCTION__);
return NULL;
}
static virDomainPtr
xenUnifiedDomainLookupByName (virConnectPtr conn,
const char *name)
{
GET_PRIVATE(conn);
virDomainPtr ret;
/* Reset any connection-level errors in virterror first, in case
* there is one hanging around from a previous call.
*/
virConnResetLastError (conn);
/* Try xend. */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonLookupByName (conn, name);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Try xenstore for inactive domains. */
if (priv->opened[XEN_UNIFIED_XS_OFFSET]) {
ret = xenStoreLookupByName (conn, name);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Try XM for inactive domains. */
if (priv->opened[XEN_UNIFIED_XM_OFFSET]) {
ret = xenXMDomainLookupByName (conn, name);
if (ret || conn->err.code != VIR_ERR_OK)
return ret;
}
/* Not found. */
xenUnifiedError(VIR_ERR_NO_DOMAIN, __FUNCTION__);
return NULL;
}
static int
xenUnifiedDomainIsActive(virDomainPtr dom)
{
virDomainPtr currdom;
int ret = -1;
/* ID field in dom may be outdated, so re-lookup */
currdom = xenUnifiedDomainLookupByUUID(dom->conn, dom->uuid);
if (currdom) {
ret = currdom->id == -1 ? 0 : 1;
virDomainFree(currdom);
}
return ret;
}
static int
xenUnifiedDomainIsPersistent(virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
virDomainPtr currdom = NULL;
int ret = -1;
if (priv->opened[XEN_UNIFIED_XM_OFFSET]) {
/* Old Xen, pre-inactive domain management.
* If the XM driver can see the guest, it is definitely persistent */
currdom = xenXMDomainLookupByUUID(dom->conn, dom->uuid);
if (currdom)
ret = 1;
else
ret = 0;
} else {
/* New Xen with inactive domain management */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
currdom = xenDaemonLookupByUUID(dom->conn, dom->uuid);
if (currdom) {
if (currdom->id == -1) {
/* If its inactive, then trivially, it must be persistent */
ret = 1;
} else {
char *path;
char uuidstr[VIR_UUID_STRING_BUFLEN];
/* If its running there's no official way to tell, so we
* go behind xend's back & look at the config dir */
virUUIDFormat(dom->uuid, uuidstr);
if (virAsprintf(&path, "%s/%s", XEND_DOMAINS_DIR, uuidstr) < 0) {
virReportOOMError();
goto done;
}
if (access(path, R_OK) == 0)
ret = 1;
else if (errno == ENOENT)
ret = 0;
}
}
}
}
done:
if (currdom)
virDomainFree(currdom);
return ret;
}
static int
xenUnifiedDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED)
{
return 0;
}
static int
xenUnifiedDomainSuspend (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
/* Try non-hypervisor methods first, then hypervisor direct method
* as a last resort.
*/
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (i != XEN_UNIFIED_HYPERVISOR_OFFSET &&
priv->opened[i] &&
drivers[i]->domainSuspend &&
drivers[i]->domainSuspend (dom) == 0)
return 0;
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET] &&
drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->domainSuspend &&
drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->domainSuspend (dom) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainResume (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
/* Try non-hypervisor methods first, then hypervisor direct method
* as a last resort.
*/
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (i != XEN_UNIFIED_HYPERVISOR_OFFSET &&
priv->opened[i] &&
drivers[i]->domainResume &&
drivers[i]->domainResume (dom) == 0)
return 0;
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET] &&
drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->domainResume &&
drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->domainResume (dom) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainShutdown (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainShutdown &&
drivers[i]->domainShutdown (dom) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainReboot (virDomainPtr dom, unsigned int flags)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainReboot &&
drivers[i]->domainReboot (dom, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainDestroy (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
/* Try non-hypervisor methods first, then hypervisor direct method
* as a last resort.
*/
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (i != XEN_UNIFIED_HYPERVISOR_OFFSET &&
priv->opened[i] &&
drivers[i]->domainDestroy &&
drivers[i]->domainDestroy (dom) == 0)
return 0;
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET] &&
drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->domainDestroy &&
drivers[XEN_UNIFIED_HYPERVISOR_OFFSET]->domainDestroy (dom) == 0)
return 0;
return -1;
}
static char *
xenUnifiedDomainGetOSType (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
char *ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainGetOSType) {
ret = drivers[i]->domainGetOSType (dom);
if (ret) return ret;
}
return NULL;
}
static unsigned long
xenUnifiedDomainGetMaxMemory (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
unsigned long ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainGetMaxMemory) {
ret = drivers[i]->domainGetMaxMemory (dom);
if (ret != 0) return ret;
}
return 0;
}
static int
xenUnifiedDomainSetMaxMemory (virDomainPtr dom, unsigned long memory)
{
GET_PRIVATE(dom->conn);
int i;
/* Prefer xend for setting max memory */
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
if (xenDaemonDomainSetMaxMemory (dom, memory) == 0)
return 0;
}
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (i != XEN_UNIFIED_XEND_OFFSET &&
priv->opened[i] &&
drivers[i]->domainSetMaxMemory &&
drivers[i]->domainSetMaxMemory (dom, memory) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainSetMemory (virDomainPtr dom, unsigned long memory)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainSetMemory &&
drivers[i]->domainSetMemory (dom, memory) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainGetInfo (virDomainPtr dom, virDomainInfoPtr info)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainGetInfo &&
drivers[i]->domainGetInfo (dom, info) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainSave (virDomainPtr dom, const char *to)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainSave &&
drivers[i]->domainSave (dom, to) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainRestore (virConnectPtr conn, const char *from)
{
GET_PRIVATE(conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainRestore &&
drivers[i]->domainRestore (conn, from) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainCoreDump (virDomainPtr dom, const char *to, int flags)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainCoreDump &&
drivers[i]->domainCoreDump (dom, to, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainSetVcpusFlags (virDomainPtr dom, unsigned int nvcpus,
unsigned int flags)
{
GET_PRIVATE(dom->conn);
int ret;
virCheckFlags(VIR_DOMAIN_VCPU_LIVE |
VIR_DOMAIN_VCPU_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM, -1);
/* At least one of LIVE or CONFIG must be set. MAXIMUM cannot be
* mixed with LIVE. */
if ((flags & (VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG)) == 0 ||
(flags & (VIR_DOMAIN_VCPU_MAXIMUM | VIR_DOMAIN_VCPU_LIVE)) ==
(VIR_DOMAIN_VCPU_MAXIMUM | VIR_DOMAIN_VCPU_LIVE)) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
if (!nvcpus || (unsigned short) nvcpus != nvcpus) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("argument out of range: %d"), nvcpus);
return -1;
}
/* Try non-hypervisor methods first, then hypervisor direct method
* as a last resort.
*/
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonDomainSetVcpusFlags(dom, nvcpus, flags);
if (ret != -2)
return ret;
}
if (priv->opened[XEN_UNIFIED_XM_OFFSET]) {
ret = xenXMDomainSetVcpusFlags(dom, nvcpus, flags);
if (ret != -2)
return ret;
}
if (flags == VIR_DOMAIN_VCPU_LIVE)
return xenHypervisorSetVcpus(dom, nvcpus);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedDomainSetVcpus (virDomainPtr dom, unsigned int nvcpus)
{
unsigned int flags = VIR_DOMAIN_VCPU_LIVE;
xenUnifiedPrivatePtr priv;
/* Per the documented API, it is hypervisor-dependent whether this
* affects just _LIVE or _LIVE|_CONFIG; in xen's case, that
* depends on xendConfigVersion. */
if (dom) {
priv = dom->conn->privateData;
if (priv->xendConfigVersion >= 3)
flags |= VIR_DOMAIN_VCPU_CONFIG;
}
return xenUnifiedDomainSetVcpusFlags(dom, nvcpus, flags);
}
static int
xenUnifiedDomainPinVcpu (virDomainPtr dom, unsigned int vcpu,
unsigned char *cpumap, int maplen)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] &&
drivers[i]->domainPinVcpu &&
drivers[i]->domainPinVcpu (dom, vcpu, cpumap, maplen) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainGetVcpus (virDomainPtr dom,
virVcpuInfoPtr info, int maxinfo,
unsigned char *cpumaps, int maplen)
{
GET_PRIVATE(dom->conn);
int i, ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainGetVcpus) {
ret = drivers[i]->domainGetVcpus (dom, info, maxinfo, cpumaps, maplen);
if (ret > 0)
return ret;
}
return -1;
}
static int
xenUnifiedDomainGetVcpusFlags (virDomainPtr dom, unsigned int flags)
{
GET_PRIVATE(dom->conn);
int ret;
virCheckFlags(VIR_DOMAIN_VCPU_LIVE |
VIR_DOMAIN_VCPU_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM, -1);
/* Exactly one of LIVE or CONFIG must be set. */
if (!(flags & VIR_DOMAIN_VCPU_LIVE) == !(flags & VIR_DOMAIN_VCPU_CONFIG)) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("invalid flag combination: (0x%x)"), flags);
return -1;
}
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
ret = xenDaemonDomainGetVcpusFlags(dom, flags);
if (ret != -2)
return ret;
}
if (priv->opened[XEN_UNIFIED_XM_OFFSET]) {
ret = xenXMDomainGetVcpusFlags(dom, flags);
if (ret != -2)
return ret;
}
if (flags == (VIR_DOMAIN_VCPU_CONFIG | VIR_DOMAIN_VCPU_MAXIMUM))
return xenHypervisorGetVcpuMax(dom);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedDomainGetMaxVcpus (virDomainPtr dom)
{
return xenUnifiedDomainGetVcpusFlags(dom, (VIR_DOMAIN_VCPU_LIVE |
VIR_DOMAIN_VCPU_MAXIMUM));
}
static char *
xenUnifiedDomainDumpXML (virDomainPtr dom, int flags)
{
GET_PRIVATE(dom->conn);
if (dom->id == -1 && priv->xendConfigVersion < 3 ) {
if (priv->opened[XEN_UNIFIED_XM_OFFSET])
return xenXMDomainDumpXML(dom, flags);
} else {
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
char *cpus, *res;
xenUnifiedLock(priv);
cpus = xenDomainUsedCpus(dom);
xenUnifiedUnlock(priv);
res = xenDaemonDomainDumpXML(dom, flags, cpus);
VIR_FREE(cpus);
return(res);
}
}
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return NULL;
}
static char *
xenUnifiedDomainXMLFromNative(virConnectPtr conn,
const char *format,
const char *config,
unsigned int flags ATTRIBUTE_UNUSED)
{
virDomainDefPtr def = NULL;
char *ret = NULL;
virConfPtr conf = NULL;
int id;
char * tty;
int vncport;
GET_PRIVATE(conn);
if (STRNEQ(format, XEN_CONFIG_FORMAT_XM) &&
STRNEQ(format, XEN_CONFIG_FORMAT_SEXPR)) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("unsupported config type %s"), format);
return NULL;
}
if (STREQ(format, XEN_CONFIG_FORMAT_XM)) {
conf = virConfReadMem(config, strlen(config), 0);
if (!conf)
goto cleanup;
def = xenParseXM(conf, priv->xendConfigVersion, priv->caps);
} else if (STREQ(format, XEN_CONFIG_FORMAT_SEXPR)) {
id = xenGetDomIdFromSxprString(config, priv->xendConfigVersion);
xenUnifiedLock(priv);
tty = xenStoreDomainGetConsolePath(conn, id);
vncport = xenStoreDomainGetVNCPort(conn, id);
xenUnifiedUnlock(priv);
def = xenParseSxprString(config, priv->xendConfigVersion, tty,
vncport);
}
if (!def)
goto cleanup;
ret = virDomainDefFormat(def, 0);
cleanup:
virDomainDefFree(def);
if (conf)
virConfFree(conf);
return ret;
}
#define MAX_CONFIG_SIZE (1024 * 65)
static char *
xenUnifiedDomainXMLToNative(virConnectPtr conn,
const char *format,
const char *xmlData,
unsigned int flags ATTRIBUTE_UNUSED)
{
virDomainDefPtr def = NULL;
char *ret = NULL;
virConfPtr conf = NULL;
GET_PRIVATE(conn);
if (STRNEQ(format, XEN_CONFIG_FORMAT_XM) &&
STRNEQ(format, XEN_CONFIG_FORMAT_SEXPR)) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("unsupported config type %s"), format);
goto cleanup;
}
if (!(def = virDomainDefParseString(priv->caps,
xmlData,
0)))
goto cleanup;
if (STREQ(format, XEN_CONFIG_FORMAT_XM)) {
int len = MAX_CONFIG_SIZE;
conf = xenFormatXM(conn, def, priv->xendConfigVersion);
if (!conf)
goto cleanup;
if (VIR_ALLOC_N(ret, len) < 0) {
virReportOOMError();
goto cleanup;
}
if (virConfWriteMem(ret, &len, conf) < 0) {
VIR_FREE(ret);
goto cleanup;
}
} else if (STREQ(format, XEN_CONFIG_FORMAT_SEXPR)) {
ret = xenFormatSxpr(conn, def, priv->xendConfigVersion);
}
cleanup:
virDomainDefFree(def);
if (conf)
virConfFree(conf);
return ret;
}
static int
xenUnifiedDomainMigratePrepare (virConnectPtr dconn,
char **cookie,
int *cookielen,
const char *uri_in,
char **uri_out,
unsigned long flags,
const char *dname,
unsigned long resource)
{
GET_PRIVATE(dconn);
if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
return xenDaemonDomainMigratePrepare (dconn, cookie, cookielen,
uri_in, uri_out,
flags, dname, resource);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedDomainMigratePerform (virDomainPtr dom,
const char *cookie,
int cookielen,
const char *uri,
unsigned long flags,
const char *dname,
unsigned long resource)
{
GET_PRIVATE(dom->conn);
if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
return xenDaemonDomainMigratePerform (dom, cookie, cookielen, uri,
flags, dname, resource);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static virDomainPtr
xenUnifiedDomainMigrateFinish (virConnectPtr dconn,
const char *dname,
const char *cookie ATTRIBUTE_UNUSED,
int cookielen ATTRIBUTE_UNUSED,
const char *uri ATTRIBUTE_UNUSED,
unsigned long flags)
{
virDomainPtr dom = NULL;
char *domain_xml = NULL;
virDomainPtr dom_new = NULL;
dom = xenUnifiedDomainLookupByName (dconn, dname);
if (! dom) {
return NULL;
}
if (flags & VIR_MIGRATE_PERSIST_DEST) {
domain_xml = xenDaemonDomainDumpXML (dom, 0, NULL);
if (! domain_xml) {
xenUnifiedError(VIR_ERR_MIGRATE_PERSIST_FAILED,
"%s", _("failed to get XML representation of migrated domain"));
goto failure;
}
dom_new = xenDaemonDomainDefineXML (dconn, domain_xml);
if (! dom_new) {
xenUnifiedError(VIR_ERR_MIGRATE_PERSIST_FAILED,
"%s", _("failed to define domain on destination host"));
goto failure;
}
/* Free additional reference added by Define */
virDomainFree (dom_new);
}
VIR_FREE (domain_xml);
return dom;
failure:
virDomainFree (dom);
VIR_FREE (domain_xml);
return NULL;
}
static int
xenUnifiedListDefinedDomains (virConnectPtr conn, char **const names,
int maxnames)
{
GET_PRIVATE(conn);
int i;
int ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->listDefinedDomains) {
ret = drivers[i]->listDefinedDomains (conn, names, maxnames);
if (ret >= 0) return ret;
}
return -1;
}
static int
xenUnifiedNumOfDefinedDomains (virConnectPtr conn)
{
GET_PRIVATE(conn);
int i;
int ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->numOfDefinedDomains) {
ret = drivers[i]->numOfDefinedDomains (conn);
if (ret >= 0) return ret;
}
return -1;
}
static int
xenUnifiedDomainCreateWithFlags (virDomainPtr dom, unsigned int flags)
{
GET_PRIVATE(dom->conn);
int i;
virCheckFlags(0, -1);
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainCreate &&
drivers[i]->domainCreate (dom) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainCreate (virDomainPtr dom)
{
return xenUnifiedDomainCreateWithFlags(dom, 0);
}
static virDomainPtr
xenUnifiedDomainDefineXML (virConnectPtr conn, const char *xml)
{
GET_PRIVATE(conn);
int i;
virDomainPtr ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainDefineXML) {
ret = drivers[i]->domainDefineXML (conn, xml);
if (ret) return ret;
}
return NULL;
}
static int
xenUnifiedDomainUndefine (virDomainPtr dom)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainUndefine &&
drivers[i]->domainUndefine (dom) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainAttachDevice (virDomainPtr dom, const char *xml)
{
GET_PRIVATE(dom->conn);
int i;
unsigned int flags = VIR_DOMAIN_DEVICE_MODIFY_LIVE;
/*
* HACK: xend with xendConfigVersion >= 3 does not support changing live
* config without touching persistent config, we add the extra flag here
* to make this API work
*/
if (priv->opened[XEN_UNIFIED_XEND_OFFSET] &&
priv->xendConfigVersion >= 3)
flags |= VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainAttachDeviceFlags &&
drivers[i]->domainAttachDeviceFlags(dom, xml, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainAttachDeviceFlags (virDomainPtr dom, const char *xml,
unsigned int flags)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainAttachDeviceFlags &&
drivers[i]->domainAttachDeviceFlags(dom, xml, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainDetachDevice (virDomainPtr dom, const char *xml)
{
GET_PRIVATE(dom->conn);
int i;
unsigned int flags = VIR_DOMAIN_DEVICE_MODIFY_LIVE;
/*
* HACK: xend with xendConfigVersion >= 3 does not support changing live
* config without touching persistent config, we add the extra flag here
* to make this API work
*/
if (priv->opened[XEN_UNIFIED_XEND_OFFSET] &&
priv->xendConfigVersion >= 3)
flags |= VIR_DOMAIN_DEVICE_MODIFY_CONFIG;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainDetachDeviceFlags &&
drivers[i]->domainDetachDeviceFlags(dom, xml, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainDetachDeviceFlags (virDomainPtr dom, const char *xml,
unsigned int flags)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainDetachDeviceFlags &&
drivers[i]->domainDetachDeviceFlags(dom, xml, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainUpdateDeviceFlags (virDomainPtr dom, const char *xml,
unsigned int flags)
{
GET_PRIVATE(dom->conn);
int i;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
if (priv->opened[i] && drivers[i]->domainUpdateDeviceFlags &&
drivers[i]->domainUpdateDeviceFlags(dom, xml, flags) == 0)
return 0;
return -1;
}
static int
xenUnifiedDomainGetAutostart (virDomainPtr dom, int *autostart)
{
GET_PRIVATE(dom->conn);
if (priv->xendConfigVersion < 3) {
if (priv->opened[XEN_UNIFIED_XM_OFFSET])
return xenXMDomainGetAutostart(dom, autostart);
} else {
if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
return xenDaemonDomainGetAutostart(dom, autostart);
}
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedDomainSetAutostart (virDomainPtr dom, int autostart)
{
GET_PRIVATE(dom->conn);
if (priv->xendConfigVersion < 3) {
if (priv->opened[XEN_UNIFIED_XM_OFFSET])
return xenXMDomainSetAutostart(dom, autostart);
} else {
if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
return xenDaemonDomainSetAutostart(dom, autostart);
}
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static char *
xenUnifiedDomainGetSchedulerType (virDomainPtr dom, int *nparams)
{
GET_PRIVATE(dom->conn);
int i;
char *schedulertype;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; i++) {
if (priv->opened[i] && drivers[i]->domainGetSchedulerType) {
schedulertype = drivers[i]->domainGetSchedulerType (dom, nparams);
if (schedulertype != NULL)
return(schedulertype);
}
}
return(NULL);
}
static int
xenUnifiedDomainGetSchedulerParameters (virDomainPtr dom,
virSchedParameterPtr params, int *nparams)
{
GET_PRIVATE(dom->conn);
int i, ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i) {
if (priv->opened[i] && drivers[i]->domainGetSchedulerParameters) {
ret = drivers[i]->domainGetSchedulerParameters(dom, params, nparams);
if (ret == 0)
return(0);
}
}
return(-1);
}
static int
xenUnifiedDomainSetSchedulerParameters (virDomainPtr dom,
virSchedParameterPtr params, int nparams)
{
GET_PRIVATE(dom->conn);
int i, ret;
/* do the hypervisor call last to get better error */
for (i = XEN_UNIFIED_NR_DRIVERS - 1; i >= 0; i--) {
if (priv->opened[i] && drivers[i]->domainSetSchedulerParameters) {
ret = drivers[i]->domainSetSchedulerParameters(dom, params, nparams);
if (ret == 0)
return 0;
}
}
return(-1);
}
static int
xenUnifiedDomainBlockStats (virDomainPtr dom, const char *path,
struct _virDomainBlockStats *stats)
{
GET_PRIVATE (dom->conn);
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET])
return xenHypervisorDomainBlockStats (dom, path, stats);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedDomainInterfaceStats (virDomainPtr dom, const char *path,
struct _virDomainInterfaceStats *stats)
{
GET_PRIVATE (dom->conn);
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET])
return xenHypervisorDomainInterfaceStats (dom, path, stats);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedDomainBlockPeek (virDomainPtr dom, const char *path,
unsigned long long offset, size_t size,
void *buffer, unsigned int flags ATTRIBUTE_UNUSED)
{
int r;
GET_PRIVATE (dom->conn);
if (priv->opened[XEN_UNIFIED_XEND_OFFSET]) {
r = xenDaemonDomainBlockPeek (dom, path, offset, size, buffer);
if (r != -2) return r;
/* r == -2 means declined, so fall through to XM driver ... */
}
if (priv->opened[XEN_UNIFIED_XM_OFFSET]) {
if (xenXMDomainBlockPeek (dom, path, offset, size, buffer) == 0)
return 0;
}
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static int
xenUnifiedNodeGetCellsFreeMemory (virConnectPtr conn, unsigned long long *freeMems,
int startCell, int maxCells)
{
GET_PRIVATE (conn);
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET])
return xenHypervisorNodeGetCellsFreeMemory (conn, freeMems,
startCell, maxCells);
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static unsigned long long
xenUnifiedNodeGetFreeMemory (virConnectPtr conn)
{
unsigned long long freeMem = 0;
int ret;
GET_PRIVATE (conn);
if (priv->opened[XEN_UNIFIED_HYPERVISOR_OFFSET]) {
ret = xenHypervisorNodeGetCellsFreeMemory (conn, &freeMem,
-1, 1);
if (ret != 1)
return (0);
return(freeMem);
}
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return(0);
}
static int
xenUnifiedDomainEventRegister(virConnectPtr conn,
virConnectDomainEventCallback callback,
void *opaque,
virFreeCallback freefunc)
{
GET_PRIVATE (conn);
int ret;
xenUnifiedLock(priv);
if (priv->xsWatch == -1) {
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
xenUnifiedUnlock(priv);
return -1;
}
ret = virDomainEventCallbackListAdd(conn, priv->domainEventCallbacks,
callback, opaque, freefunc);
xenUnifiedUnlock(priv);
return (ret);
}
static int
xenUnifiedDomainEventDeregister(virConnectPtr conn,
virConnectDomainEventCallback callback)
{
int ret;
GET_PRIVATE (conn);
xenUnifiedLock(priv);
if (priv->xsWatch == -1) {
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
xenUnifiedUnlock(priv);
return -1;
}
if (priv->domainEventDispatching)
ret = virDomainEventCallbackListMarkDelete(conn, priv->domainEventCallbacks,
callback);
else
ret = virDomainEventCallbackListRemove(conn, priv->domainEventCallbacks,
callback);
xenUnifiedUnlock(priv);
return ret;
}
static int
xenUnifiedDomainEventRegisterAny(virConnectPtr conn,
virDomainPtr dom,
int eventID,
virConnectDomainEventGenericCallback callback,
void *opaque,
virFreeCallback freefunc)
{
GET_PRIVATE (conn);
int ret;
xenUnifiedLock(priv);
if (priv->xsWatch == -1) {
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
xenUnifiedUnlock(priv);
return -1;
}
ret = virDomainEventCallbackListAddID(conn, priv->domainEventCallbacks,
dom, eventID,
callback, opaque, freefunc);
xenUnifiedUnlock(priv);
return (ret);
}
static int
xenUnifiedDomainEventDeregisterAny(virConnectPtr conn,
int callbackID)
{
int ret;
GET_PRIVATE (conn);
xenUnifiedLock(priv);
if (priv->xsWatch == -1) {
xenUnifiedError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
xenUnifiedUnlock(priv);
return -1;
}
if (priv->domainEventDispatching)
ret = virDomainEventCallbackListMarkDeleteID(conn, priv->domainEventCallbacks,
callbackID);
else
ret = virDomainEventCallbackListRemoveID(conn, priv->domainEventCallbacks,
callbackID);
xenUnifiedUnlock(priv);
return ret;
}
static int
xenUnifiedNodeDeviceGetPciInfo (virNodeDevicePtr dev,
unsigned *domain,
unsigned *bus,
unsigned *slot,
unsigned *function)
{
virNodeDeviceDefPtr def = NULL;
virNodeDevCapsDefPtr cap;
char *xml = NULL;
int ret = -1;
xml = virNodeDeviceGetXMLDesc(dev, 0);
if (!xml)
goto out;
def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE);
if (!def)
goto out;
cap = def->caps;
while (cap) {
if (cap->type == VIR_NODE_DEV_CAP_PCI_DEV) {
*domain = cap->data.pci_dev.domain;
*bus = cap->data.pci_dev.bus;
*slot = cap->data.pci_dev.slot;
*function = cap->data.pci_dev.function;
break;
}
cap = cap->next;
}
if (!cap) {
xenUnifiedError(VIR_ERR_INVALID_ARG,
_("device %s is not a PCI device"), dev->name);
goto out;
}
ret = 0;
out:
virNodeDeviceDefFree(def);
VIR_FREE(xml);
return ret;
}
static int
xenUnifiedNodeDeviceDettach (virNodeDevicePtr dev)
{
pciDevice *pci;
unsigned domain, bus, slot, function;
int ret = -1;
if (xenUnifiedNodeDeviceGetPciInfo(dev, &domain, &bus, &slot, &function) < 0)
return -1;
pci = pciGetDevice(domain, bus, slot, function);
if (!pci)
return -1;
if (pciDettachDevice(pci, NULL) < 0)
goto out;
ret = 0;
out:
pciFreeDevice(pci);
return ret;
}
static int
xenUnifiedNodeDeviceAssignedDomainId (virNodeDevicePtr dev)
{
int numdomains;
int ret = -1, i;
int *ids = NULL;
char *bdf = NULL;
char *xref = NULL;
unsigned int domain, bus, slot, function;
virConnectPtr conn = dev->conn;
xenUnifiedPrivatePtr priv = conn->privateData;
/* Get active domains */
numdomains = xenUnifiedNumOfDomains(conn);
if (numdomains < 0) {
return ret;
}
if (numdomains > 0){
if (VIR_ALLOC_N(ids, numdomains) < 0) {
virReportOOMError();
goto out;
}
if ((numdomains = xenUnifiedListDomains(conn, &ids[0], numdomains)) < 0) {
goto out;
}
}
/* Get pci bdf */
if (xenUnifiedNodeDeviceGetPciInfo(dev, &domain, &bus, &slot, &function) < 0)
goto out;
if (virAsprintf(&bdf, "%04x:%02x:%02x.%0x",
domain, bus, slot, function) < 0) {
virReportOOMError();
goto out;
}
xenUnifiedLock(priv);
/* Check if bdf is assigned to one of active domains */
for (i = 0; i < numdomains; i++ ) {
xref = xenStoreDomainGetPCIID(conn, ids[i], bdf);
if (xref == NULL) {
continue;
} else {
ret = ids[i];
break;
}
}
xenUnifiedUnlock(priv);
VIR_FREE(xref);
VIR_FREE(bdf);
out:
VIR_FREE(ids);
return ret;
}
static int
xenUnifiedNodeDeviceReAttach (virNodeDevicePtr dev)
{
pciDevice *pci;
unsigned domain, bus, slot, function;
int ret = -1;
int domid;
if (xenUnifiedNodeDeviceGetPciInfo(dev, &domain, &bus, &slot, &function) < 0)
return -1;
pci = pciGetDevice(domain, bus, slot, function);
if (!pci)
return -1;
/* Check if device is assigned to an active guest */
if ((domid = xenUnifiedNodeDeviceAssignedDomainId(dev)) >= 0) {
xenUnifiedError(VIR_ERR_INTERNAL_ERROR,
_("Device %s has been assigned to guest %d"),
dev->name, domid);
goto out;
}
if (pciReAttachDevice(pci, NULL) < 0)
goto out;
ret = 0;
out:
pciFreeDevice(pci);
return ret;
}
static int
xenUnifiedNodeDeviceReset (virNodeDevicePtr dev)
{
pciDevice *pci;
unsigned domain, bus, slot, function;
int ret = -1;
if (xenUnifiedNodeDeviceGetPciInfo(dev, &domain, &bus, &slot, &function) < 0)
return -1;
pci = pciGetDevice(domain, bus, slot, function);
if (!pci)
return -1;
if (pciResetDevice(pci, NULL, NULL) < 0)
goto out;
ret = 0;
out:
pciFreeDevice(pci);
return ret;
}
static int
xenUnifiedDomainOpenConsole(virDomainPtr dom,
const char *devname,
virStreamPtr st,
unsigned int flags)
{
virDomainDefPtr def = NULL;
int ret = -1;
virDomainChrDefPtr chr = NULL;
virCheckFlags(0, -1);
if (dom->id == -1) {
xenUnifiedError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto cleanup;
}
if (devname) {
/* XXX support device aliases in future */
xenUnifiedError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Named device aliases are not supported"));
goto cleanup;
}
def = xenDaemonDomainFetch(dom->conn, dom->id, dom->name, NULL);
if (!def)
goto cleanup;
if (def->console)
chr = def->console;
else if (def->nserials)
chr = def->serials[0];
if (!chr) {
xenUnifiedError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot find default console device"));
goto cleanup;
}
if (chr->source.type != VIR_DOMAIN_CHR_TYPE_PTY) {
xenUnifiedError(VIR_ERR_INTERNAL_ERROR,
_("character device %s is not using a PTY"), devname);
goto cleanup;
}
if (virFDStreamOpenFile(st, chr->source.data.file.path, 0, 0, O_RDWR) < 0)
goto cleanup;
ret = 0;
cleanup:
virDomainDefFree(def);
return ret;
}
/*----- Register with libvirt.c, and initialize Xen drivers. -----*/
/* The interface which we export upwards to libvirt.c. */
static virDriver xenUnifiedDriver = {
VIR_DRV_XEN_UNIFIED,
"Xen",
xenUnifiedOpen, /* open */
xenUnifiedClose, /* close */
xenUnifiedSupportsFeature, /* supports_feature */
xenUnifiedType, /* type */
xenUnifiedGetVersion, /* version */
NULL, /* libvirtVersion (impl. in libvirt.c) */
virGetHostname, /* getHostname */
NULL, /* getSysinfo */
xenUnifiedGetMaxVcpus, /* getMaxVcpus */
xenUnifiedNodeGetInfo, /* nodeGetInfo */
xenUnifiedGetCapabilities, /* getCapabilities */
xenUnifiedListDomains, /* listDomains */
xenUnifiedNumOfDomains, /* numOfDomains */
xenUnifiedDomainCreateXML, /* domainCreateXML */
xenUnifiedDomainLookupByID, /* domainLookupByID */
xenUnifiedDomainLookupByUUID, /* domainLookupByUUID */
xenUnifiedDomainLookupByName, /* domainLookupByName */
xenUnifiedDomainSuspend, /* domainSuspend */
xenUnifiedDomainResume, /* domainResume */
xenUnifiedDomainShutdown, /* domainShutdown */
xenUnifiedDomainReboot, /* domainReboot */
xenUnifiedDomainDestroy, /* domainDestroy */
xenUnifiedDomainGetOSType, /* domainGetOSType */
xenUnifiedDomainGetMaxMemory, /* domainGetMaxMemory */
xenUnifiedDomainSetMaxMemory, /* domainSetMaxMemory */
xenUnifiedDomainSetMemory, /* domainSetMemory */
NULL, /*domainSetMemoryFlags */
NULL, /* domainSetMemoryParameters */
NULL, /* domainGetMemoryParameters */
NULL, /* domainSetBlkioParameters */
NULL, /* domainGetBlkioParameters */
xenUnifiedDomainGetInfo, /* domainGetInfo */
xenUnifiedDomainSave, /* domainSave */
xenUnifiedDomainRestore, /* domainRestore */
xenUnifiedDomainCoreDump, /* domainCoreDump */
xenUnifiedDomainSetVcpus, /* domainSetVcpus */
xenUnifiedDomainSetVcpusFlags, /* domainSetVcpusFlags */
xenUnifiedDomainGetVcpusFlags, /* domainGetVcpusFlags */
xenUnifiedDomainPinVcpu, /* domainPinVcpu */
xenUnifiedDomainGetVcpus, /* domainGetVcpus */
xenUnifiedDomainGetMaxVcpus, /* domainGetMaxVcpus */
NULL, /* domainGetSecurityLabel */
NULL, /* nodeGetSecurityModel */
xenUnifiedDomainDumpXML, /* domainDumpXML */
xenUnifiedDomainXMLFromNative, /* domainXMLFromNative */
xenUnifiedDomainXMLToNative, /* domainXMLToNative */
xenUnifiedListDefinedDomains, /* listDefinedDomains */
xenUnifiedNumOfDefinedDomains, /* numOfDefinedDomains */
xenUnifiedDomainCreate, /* domainCreate */
xenUnifiedDomainCreateWithFlags, /* domainCreateWithFlags */
xenUnifiedDomainDefineXML, /* domainDefineXML */
xenUnifiedDomainUndefine, /* domainUndefine */
xenUnifiedDomainAttachDevice, /* domainAttachDevice */
xenUnifiedDomainAttachDeviceFlags, /* domainAttachDeviceFlags */
xenUnifiedDomainDetachDevice, /* domainDetachDevice */
xenUnifiedDomainDetachDeviceFlags, /* domainDetachDeviceFlags */
xenUnifiedDomainUpdateDeviceFlags, /* domainUpdateDeviceFlags */
xenUnifiedDomainGetAutostart, /* domainGetAutostart */
xenUnifiedDomainSetAutostart, /* domainSetAutostart */
xenUnifiedDomainGetSchedulerType, /* domainGetSchedulerType */
xenUnifiedDomainGetSchedulerParameters, /* domainGetSchedulerParameters */
xenUnifiedDomainSetSchedulerParameters, /* domainSetSchedulerParameters */
xenUnifiedDomainMigratePrepare, /* domainMigratePrepare */
xenUnifiedDomainMigratePerform, /* domainMigratePerform */
xenUnifiedDomainMigrateFinish, /* domainMigrateFinish */
xenUnifiedDomainBlockStats, /* domainBlockStats */
xenUnifiedDomainInterfaceStats, /* domainInterfaceStats */
NULL, /* domainMemoryStats */
xenUnifiedDomainBlockPeek, /* domainBlockPeek */
NULL, /* domainMemoryPeek */
NULL, /* domainGetBlockInfo */
xenUnifiedNodeGetCellsFreeMemory, /* nodeGetCellsFreeMemory */
xenUnifiedNodeGetFreeMemory, /* getFreeMemory */
xenUnifiedDomainEventRegister, /* domainEventRegister */
xenUnifiedDomainEventDeregister, /* domainEventDeregister */
NULL, /* domainMigratePrepare2 */
NULL, /* domainMigrateFinish2 */
xenUnifiedNodeDeviceDettach, /* nodeDeviceDettach */
xenUnifiedNodeDeviceReAttach, /* nodeDeviceReAttach */
xenUnifiedNodeDeviceReset, /* nodeDeviceReset */
NULL, /* domainMigratePrepareTunnel */
xenUnifiedIsEncrypted, /* isEncrypted */
xenUnifiedIsSecure, /* isSecure */
xenUnifiedDomainIsActive, /* domainIsActive */
xenUnifiedDomainIsPersistent, /* domainIsPersistent */
xenUnifiedDomainIsUpdated, /* domainIsUpdated */
NULL, /* cpuCompare */
NULL, /* cpuBaseline */
NULL, /* domainGetJobInfo */
NULL, /* domainAbortJob */
NULL, /* domainMigrateSetMaxDowntime */
NULL, /* domainMigrateSetMaxSpeed */
xenUnifiedDomainEventRegisterAny, /* domainEventRegisterAny */
xenUnifiedDomainEventDeregisterAny, /* domainEventDeregisterAny */
NULL, /* domainManagedSave */
NULL, /* domainHasManagedSaveImage */
NULL, /* domainManagedSaveRemove */
NULL, /* domainSnapshotCreateXML */
NULL, /* domainSnapshotDumpXML */
NULL, /* domainSnapshotNum */
NULL, /* domainSnapshotListNames */
NULL, /* domainSnapshotLookupByName */
NULL, /* domainHasCurrentSnapshot */
NULL, /* domainSnapshotCurrent */
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
xenUnifiedDomainOpenConsole, /* domainOpenConsole */
};
/**
* xenRegister:
*
* Register xen related drivers
*
* Returns the driver priority or -1 in case of error.
*/
int
xenRegister (void)
{
/* Ignore failures here. */
(void) xenHypervisorInit ();
#ifdef WITH_LIBVIRTD
if (virRegisterStateDriver (&state_driver) == -1) return -1;
#endif
return virRegisterDriver (&xenUnifiedDriver);
}
/**
* xenUnifiedDomainInfoListFree:
*
* Free the Domain Info List
*/
void
xenUnifiedDomainInfoListFree(xenUnifiedDomainInfoListPtr list)
{
int i;
if (list == NULL)
return;
for (i=0; i<list->count; i++) {
VIR_FREE(list->doms[i]->name);
VIR_FREE(list->doms[i]);
}
VIR_FREE(list->doms);
VIR_FREE(list);
}
/**
* xenUnifiedAddDomainInfo:
*
* Add name and uuid to the domain info list
*
* Returns: 0 on success, -1 on failure
*/
int
xenUnifiedAddDomainInfo(xenUnifiedDomainInfoListPtr list,
int id, char *name,
unsigned char *uuid)
{
xenUnifiedDomainInfoPtr info;
int n;
/* check if we already have this callback on our list */
for (n=0; n < list->count; n++) {
if (STREQ(list->doms[n]->name, name) &&
!memcmp(list->doms[n]->uuid, uuid, VIR_UUID_BUFLEN)) {
VIR_DEBUG0("WARNING: dom already tracked");
return -1;
}
}
if (VIR_ALLOC(info) < 0)
goto memory_error;
if (!(info->name = strdup(name)))
goto memory_error;
memcpy(info->uuid, uuid, VIR_UUID_BUFLEN);
info->id = id;
/* Make space on list */
n = list->count;
if (VIR_REALLOC_N(list->doms, n + 1) < 0) {
goto memory_error;
}
list->doms[n] = info;
list->count++;
return 0;
memory_error:
virReportOOMError();
if (info)
VIR_FREE(info->name);
VIR_FREE(info);
return -1;
}
/**
* xenUnifiedRemoveDomainInfo:
*
* Removes name and uuid to the domain info list
*
* Returns: 0 on success, -1 on failure
*/
int
xenUnifiedRemoveDomainInfo(xenUnifiedDomainInfoListPtr list,
int id, char *name,
unsigned char *uuid)
{
int i;
for (i = 0 ; i < list->count ; i++) {
if( list->doms[i]->id == id &&
STREQ(list->doms[i]->name, name) &&
!memcmp(list->doms[i]->uuid, uuid, VIR_UUID_BUFLEN)) {
VIR_FREE(list->doms[i]->name);
VIR_FREE(list->doms[i]);
if (i < (list->count - 1))
memmove(list->doms + i,
list->doms + i + 1,
sizeof(*(list->doms)) *
(list->count - (i + 1)));
if (VIR_REALLOC_N(list->doms,
list->count - 1) < 0) {
; /* Failure to reduce memory allocation isn't fatal */
}
list->count--;
return 0;
}
}
return -1;
}
static void
xenUnifiedDomainEventDispatchFunc(virConnectPtr conn,
virDomainEventPtr event,
virConnectDomainEventGenericCallback cb,
void *cbopaque,
void *opaque)
{
xenUnifiedPrivatePtr priv = opaque;
/*
* Release the lock while the callback is running so that
* we're re-entrant safe for callback work - the callback
* may want to invoke other virt functions & we have already
* protected the one piece of state we have - the callback
* list
*/
xenUnifiedUnlock(priv);
virDomainEventDispatchDefaultFunc(conn, event, cb, cbopaque, NULL);
xenUnifiedLock(priv);
}
/**
* xenUnifiedDomainEventDispatch:
* @priv: the connection to dispatch events on
* @event: the event to dispatch
*
* Dispatch domain events to registered callbacks
*
* The caller must hold the lock in 'priv' before invoking
*
*/
void xenUnifiedDomainEventDispatch (xenUnifiedPrivatePtr priv,
virDomainEventPtr event)
{
if (!priv)
return;
priv->domainEventDispatching = 1;
if (priv->domainEventCallbacks) {
virDomainEventDispatch(event,
priv->domainEventCallbacks,
xenUnifiedDomainEventDispatchFunc,
priv);
/* Purge any deleted callbacks */
virDomainEventCallbackListPurgeMarked(priv->domainEventCallbacks);
}
virDomainEventFree(event);
priv->domainEventDispatching = 0;
}
void xenUnifiedLock(xenUnifiedPrivatePtr priv)
{
virMutexLock(&priv->lock);
}
void xenUnifiedUnlock(xenUnifiedPrivatePtr priv)
{
virMutexUnlock(&priv->lock);
}
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