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libvirt/src/xen/xm_internal.c
Jim Meyering 7be5c26d74 xenXMDomainDefineXML: remove dead store and useless/leaky virGetDomain 
* src/xen/xm_internal.c (xenXMDomainDefineXML): Remove useless and
leak-inducing call to virGetDomain, as well as decl of now-unused local.
2010-04-07 21:49:15 +02:00

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/*
* xm_internal.h: helper routines for dealing with inactive domains
*
* Copyright (C) 2006-2007, 2009-2010 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*
*/
#include <config.h>
#include <dirent.h>
#include <time.h>
#include <sys/stat.h>
#include <limits.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <stdint.h>
#include <xen/dom0_ops.h>
#include "virterror_internal.h"
#include "datatypes.h"
#include "xm_internal.h"
#include "xen_driver.h"
#include "xend_internal.h"
#include "hash.h"
#include "buf.h"
#include "uuid.h"
#include "util.h"
#include "memory.h"
#include "logging.h"
#define VIR_FROM_THIS VIR_FROM_XENXM
#ifdef WITH_RHEL5_API
# define XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU 0
# define XEND_CONFIG_MIN_VERS_PVFB_NEWCONF 2
#else
# define XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU 3
# define XEND_CONFIG_MIN_VERS_PVFB_NEWCONF 3
#endif
/* The true Xen limit varies but so far is always way
less than 1024, which is the Linux kernel limit according
to sched.h, so we'll match that for now */
#define XEN_MAX_PHYSICAL_CPU 1024
static int xenXMConfigSetString(virConfPtr conf, const char *setting,
const char *str);
char * xenXMAutoAssignMac(void);
static int xenXMDomainAttachDeviceFlags(virDomainPtr domain, const char *xml,
unsigned int flags);
static int xenXMDomainDetachDeviceFlags(virDomainPtr domain, const char *xml,
unsigned int flags);
#define XM_REFRESH_INTERVAL 10
#define XM_CONFIG_DIR "/etc/xen"
#define XM_EXAMPLE_PREFIX "xmexample"
#define XEND_CONFIG_FILE "xend-config.sxp"
#define XEND_PCI_CONFIG_PREFIX "xend-pci-"
#define QEMU_IF_SCRIPT "qemu-ifup"
#define XM_XML_ERROR "Invalid xml"
struct xenUnifiedDriver xenXMDriver = {
xenXMOpen, /* open */
xenXMClose, /* close */
NULL, /* version */
NULL, /* hostname */
NULL, /* nodeGetInfo */
NULL, /* getCapabilities */
NULL, /* listDomains */
NULL, /* numOfDomains */
NULL, /* domainCreateXML */
NULL, /* domainSuspend */
NULL, /* domainResume */
NULL, /* domainShutdown */
NULL, /* domainReboot */
NULL, /* domainDestroy */
NULL, /* domainGetOSType */
xenXMDomainGetMaxMemory, /* domainGetMaxMemory */
xenXMDomainSetMaxMemory, /* domainSetMaxMemory */
xenXMDomainSetMemory, /* domainMaxMemory */
xenXMDomainGetInfo, /* domainGetInfo */
NULL, /* domainSave */
NULL, /* domainRestore */
NULL, /* domainCoreDump */
xenXMDomainSetVcpus, /* domainSetVcpus */
xenXMDomainPinVcpu, /* domainPinVcpu */
NULL, /* domainGetVcpus */
NULL, /* domainGetMaxVcpus */
xenXMListDefinedDomains, /* listDefinedDomains */
xenXMNumOfDefinedDomains, /* numOfDefinedDomains */
xenXMDomainCreate, /* domainCreate */
xenXMDomainDefineXML, /* domainDefineXML */
xenXMDomainUndefine, /* domainUndefine */
xenXMDomainAttachDeviceFlags, /* domainAttachDeviceFlags */
xenXMDomainDetachDeviceFlags, /* domainDetachDeviceFlags */
NULL, /* domainUpdateDeviceFlags */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
#define xenXMError(code, ...) \
virReportErrorHelper(NULL, VIR_FROM_XENXM, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
#ifndef WITH_XEN_INOTIFY
static int xenInotifyActive(virConnectPtr conn ATTRIBUTE_UNUSED)
{
return 0;
}
#else
static int xenInotifyActive(virConnectPtr conn)
{
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
return priv->inotifyWatch > 0;
}
#endif
/* Convenience method to grab a int from the config file object */
static int xenXMConfigGetBool(virConfPtr conf,
const char *name,
int *value,
int def) {
virConfValuePtr val;
*value = 0;
if (!(val = virConfGetValue(conf, name))) {
*value = def;
return 0;
}
if (val->type == VIR_CONF_LONG) {
*value = val->l ? 1 : 0;
} else if (val->type == VIR_CONF_STRING) {
*value = STREQ(val->str, "1") ? 1 : 0;
} else {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was malformed"), name);
return -1;
}
return 0;
}
/* Convenience method to grab a int from the config file object */
static int xenXMConfigGetULong(virConfPtr conf,
const char *name,
unsigned long *value,
int def) {
virConfValuePtr val;
*value = 0;
if (!(val = virConfGetValue(conf, name))) {
*value = def;
return 0;
}
if (val->type == VIR_CONF_LONG) {
*value = val->l;
} else if (val->type == VIR_CONF_STRING) {
char *ret;
*value = strtol(val->str, &ret, 10);
if (ret == val->str) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was malformed"), name);
return -1;
}
} else {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was malformed"), name);
return -1;
}
return 0;
}
/* Convenience method to grab a string from the config file object */
static int xenXMConfigGetString(virConfPtr conf,
const char *name,
const char **value,
const char *def) {
virConfValuePtr val;
*value = NULL;
if (!(val = virConfGetValue(conf, name))) {
*value = def;
return 0;
}
if (val->type != VIR_CONF_STRING) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was malformed"), name);
return -1;
}
if (!val->str)
*value = def;
else
*value = val->str;
return 0;
}
static int xenXMConfigCopyStringInternal(virConfPtr conf,
const char *name,
char **value,
int allowMissing) {
virConfValuePtr val;
*value = NULL;
if (!(val = virConfGetValue(conf, name))) {
if (allowMissing)
return 0;
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was missing"), name);
return -1;
}
if (val->type != VIR_CONF_STRING) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was not a string"), name);
return -1;
}
if (!val->str) {
if (allowMissing)
return 0;
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("config value %s was missing"), name);
return -1;
}
if (!(*value = strdup(val->str))) {
virReportOOMError();
return -1;
}
return 0;
}
static int xenXMConfigCopyString(virConfPtr conf,
const char *name,
char **value) {
return xenXMConfigCopyStringInternal(conf, name, value, 0);
}
static int xenXMConfigCopyStringOpt(virConfPtr conf,
const char *name,
char **value) {
return xenXMConfigCopyStringInternal(conf, name, value, 1);
}
/* Convenience method to grab a string UUID from the config file object */
static int xenXMConfigGetUUID(virConfPtr conf, const char *name, unsigned char *uuid) {
virConfValuePtr val;
if (!uuid || !name || !conf)
return (-1);
if (!(val = virConfGetValue(conf, name))) {
return (-1);
}
if (val->type != VIR_CONF_STRING)
return (-1);
if (!val->str)
return (-1);
if (virUUIDParse(val->str, uuid) < 0)
return (-1);
return (0);
}
/* Release memory associated with a cached config object */
static void xenXMConfigFree(void *payload, const char *key ATTRIBUTE_UNUSED) {
xenXMConfCachePtr entry = (xenXMConfCachePtr)payload;
virDomainDefFree(entry->def);
VIR_FREE(entry);
}
struct xenXMConfigReaperData {
xenUnifiedPrivatePtr priv;
time_t now;
};
/* Remove any configs which were not refreshed recently */
static int xenXMConfigReaper(const void *payload, const char *key ATTRIBUTE_UNUSED, const void *data) {
const struct xenXMConfigReaperData *args = data;
xenXMConfCachePtr entry = (xenXMConfCachePtr)payload;
/* We're going to purge this config file, so check if it
is currently mapped as owner of a named domain. */
if (entry->refreshedAt != args->now) {
const char *olddomname = entry->def->name;
char *nameowner = (char *)virHashLookup(args->priv->nameConfigMap, olddomname);
if (nameowner && STREQ(nameowner, key)) {
virHashRemoveEntry(args->priv->nameConfigMap, olddomname, NULL);
}
return (1);
}
return (0);
}
static virDomainDefPtr
xenXMConfigReadFile(virConnectPtr conn, const char *filename) {
virConfPtr conf;
virDomainDefPtr def;
if (!(conf = virConfReadFile(filename, 0)))
return NULL;
def = xenXMDomainConfigParse(conn, conf);
virConfFree(conf);
return def;
}
static int
xenXMConfigSaveFile(virConnectPtr conn, const char *filename, virDomainDefPtr def) {
virConfPtr conf;
int ret;
if (!(conf = xenXMDomainConfigFormat(conn, def)))
return -1;
ret = virConfWriteFile(filename, conf);
virConfFree(conf);
return ret;
}
/*
* Caller must hold the lock on 'conn->privateData' before
* calling this funtion
*/
int
xenXMConfigCacheRemoveFile(virConnectPtr conn,
const char *filename)
{
xenUnifiedPrivatePtr priv = conn->privateData;
xenXMConfCachePtr entry;
entry = virHashLookup(priv->configCache, filename);
if (!entry) {
DEBUG("No config entry for %s", filename);
return 0;
}
virHashRemoveEntry(priv->nameConfigMap, entry->def->name, NULL);
virHashRemoveEntry(priv->configCache, filename, xenXMConfigFree);
DEBUG("Removed %s %s", entry->def->name, filename);
return 0;
}
/*
* Caller must hold the lock on 'conn->privateData' before
* calling this funtion
*/
int
xenXMConfigCacheAddFile(virConnectPtr conn, const char *filename)
{
xenUnifiedPrivatePtr priv = conn->privateData;
xenXMConfCachePtr entry;
struct stat st;
int newborn = 0;
time_t now = time(NULL);
DEBUG("Adding file %s", filename);
/* Get modified time */
if ((stat(filename, &st) < 0)) {
virReportSystemError(errno,
_("cannot stat: %s"),
filename);
return -1;
}
/* Ignore zero length files, because inotify fires before
any content has actually been created */
if (st.st_size == 0) {
DEBUG("Ignoring zero length file %s", filename);
return -1;
}
/* If we already have a matching entry and it is not
modified, then carry on to next one*/
if ((entry = virHashLookup(priv->configCache, filename))) {
char *nameowner;
if (entry->refreshedAt >= st.st_mtime) {
entry->refreshedAt = now;
/* return success if up-to-date */
return 0;
}
/* If we currently own the name, then release it and
re-acquire it later - just in case it was renamed */
nameowner = (char *)virHashLookup(priv->nameConfigMap, entry->def->name);
if (nameowner && STREQ(nameowner, filename)) {
virHashRemoveEntry(priv->nameConfigMap, entry->def->name, NULL);
}
/* Clear existing config entry which needs refresh */
virDomainDefFree(entry->def);
entry->def = NULL;
} else { /* Completely new entry */
newborn = 1;
if (VIR_ALLOC(entry) < 0) {
virReportOOMError();
return -1;
}
memcpy(entry->filename, filename, PATH_MAX);
}
entry->refreshedAt = now;
if (!(entry->def = xenXMConfigReadFile(conn, entry->filename))) {
DEBUG("Failed to read %s", entry->filename);
if (!newborn)
virHashRemoveEntry(priv->configCache, filename, NULL);
VIR_FREE(entry);
return -1;
}
/* If its a completely new entry, it must be stuck into
the cache (refresh'd entries are already registered) */
if (newborn) {
if (virHashAddEntry(priv->configCache, entry->filename, entry) < 0) {
virDomainDefFree(entry->def);
VIR_FREE(entry);
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("xenXMConfigCacheRefresh: virHashAddEntry"));
return -1;
}
}
/* See if we need to map this config file in as the primary owner
* of the domain in question
*/
if (!virHashLookup(priv->nameConfigMap, entry->def->name)) {
if (virHashAddEntry(priv->nameConfigMap, entry->def->name, entry->filename) < 0) {
virHashRemoveEntry(priv->configCache, filename, NULL);
virDomainDefFree(entry->def);
VIR_FREE(entry);
}
}
DEBUG("Added config %s %s", entry->def->name, filename);
return 0;
}
/* This method is called by various methods to scan /etc/xen
* (or whatever directory was set by LIBVIRT_XM_CONFIG_DIR
* environment variable) and process any domain configs. It
* has rate-limited so never rescans more frequently than
* once every X seconds
*
* Caller must hold the lock on 'conn->privateData' before
* calling this funtion
*/
int xenXMConfigCacheRefresh (virConnectPtr conn) {
xenUnifiedPrivatePtr priv = conn->privateData;
DIR *dh;
struct dirent *ent;
time_t now = time(NULL);
int ret = -1;
struct xenXMConfigReaperData args;
if (now == ((time_t)-1)) {
virReportSystemError(errno,
"%s", _("cannot get time of day"));
return (-1);
}
/* Rate limit re-scans */
if ((now - priv->lastRefresh) < XM_REFRESH_INTERVAL)
return (0);
priv->lastRefresh = now;
/* Process the files in the config dir */
if (!(dh = opendir(priv->configDir))) {
virReportSystemError(errno,
_("cannot read directory %s"),
priv->configDir);
return (-1);
}
while ((ent = readdir(dh))) {
struct stat st;
char path[PATH_MAX];
/*
* Skip a bunch of crufty files that clearly aren't config files
*/
/* Like 'dot' files... */
if (STRPREFIX(ent->d_name, "."))
continue;
/* ...and the XenD server config file */
if (STRPREFIX(ent->d_name, XEND_CONFIG_FILE))
continue;
/* ...and random PCI config cruft */
if (STRPREFIX(ent->d_name, XEND_PCI_CONFIG_PREFIX))
continue;
/* ...and the example domain configs */
if (STRPREFIX(ent->d_name, XM_EXAMPLE_PREFIX))
continue;
/* ...and the QEMU networking script */
if (STRPREFIX(ent->d_name, QEMU_IF_SCRIPT))
continue;
/* ...and editor backups */
if (ent->d_name[0] == '#')
continue;
if (ent->d_name[strlen(ent->d_name)-1] == '~')
continue;
/* Build the full file path */
if ((strlen(priv->configDir) + 1 + strlen(ent->d_name) + 1) > PATH_MAX)
continue;
strcpy(path, priv->configDir);
strcat(path, "/");
strcat(path, ent->d_name);
/* Skip anything which isn't a file (takes care of scripts/ subdir */
if ((stat(path, &st) < 0) ||
(!S_ISREG(st.st_mode))) {
continue;
}
/* If we already have a matching entry and it is not
modified, then carry on to next one*/
if (xenXMConfigCacheAddFile(conn, path) < 0) {
/* Ignoring errors, since alot of stuff goes wrong in /etc/xen */
}
}
/* Reap all entries which were not changed, by comparing
their refresh timestamp - the timestamp should match
'now' if they were refreshed. If timestamp doesn't match
then the config is no longer on disk */
args.now = now;
args.priv = priv;
virHashRemoveSet(priv->configCache, xenXMConfigReaper, xenXMConfigFree, &args);
ret = 0;
closedir(dh);
return (ret);
}
/*
* The XM driver keeps a cache of config files as virDomainDefPtr
* objects in the xenUnifiedPrivatePtr. Optionally inotify lets
* us watch for changes (see separate driver), otherwise we poll
* every few seconds
*/
virDrvOpenStatus
xenXMOpen (virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED)
{
xenUnifiedPrivatePtr priv = conn->privateData;
priv->configDir = XM_CONFIG_DIR;
priv->configCache = virHashCreate(50);
if (!priv->configCache)
return (-1);
priv->nameConfigMap = virHashCreate(50);
if (!priv->nameConfigMap) {
virHashFree(priv->configCache, NULL);
priv->configCache = NULL;
return (-1);
}
/* Force the cache to be reloaded next time that
* xenXMConfigCacheRefresh is called.
*/
priv->lastRefresh = 0;
return (0);
}
/*
* Free the cached config files associated with this
* connection
*/
int xenXMClose(virConnectPtr conn) {
xenUnifiedPrivatePtr priv = conn->privateData;
virHashFree(priv->nameConfigMap, NULL);
virHashFree(priv->configCache, xenXMConfigFree);
return (0);
}
/*
* Since these are all offline domains, we only return info about
* VCPUs and memory.
*/
int xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return(-1);
}
if (domain->id != -1)
return (-1);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto error;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto error;
memset(info, 0, sizeof(virDomainInfo));
info->maxMem = entry->def->maxmem;
info->memory = entry->def->memory;
info->nrVirtCpu = entry->def->vcpus;
info->state = VIR_DOMAIN_SHUTOFF;
info->cpuTime = 0;
xenUnifiedUnlock(priv);
return (0);
error:
xenUnifiedUnlock(priv);
return -1;
}
#define MAX_VFB 1024
/*
* Turn a config record into a lump of XML describing the
* domain, suitable for later feeding for virDomainCreateXML
*/
virDomainDefPtr
xenXMDomainConfigParse(virConnectPtr conn, virConfPtr conf) {
const char *str;
int hvm = 0;
int val;
virConfValuePtr list;
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
virDomainDefPtr def = NULL;
virDomainDiskDefPtr disk = NULL;
virDomainNetDefPtr net = NULL;
virDomainGraphicsDefPtr graphics = NULL;
virDomainHostdevDefPtr hostdev = NULL;
int i;
const char *defaultArch, *defaultMachine;
int vmlocaltime = 0;
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
return NULL;
}
def->virtType = VIR_DOMAIN_VIRT_XEN;
def->id = -1;
if (xenXMConfigCopyString(conf, "name", &def->name) < 0)
goto cleanup;
if (xenXMConfigGetUUID(conf, "uuid", def->uuid) < 0)
goto cleanup;
if ((xenXMConfigGetString(conf, "builder", &str, "linux") == 0) &&
STREQ(str, "hvm"))
hvm = 1;
if (!(def->os.type = strdup(hvm ? "hvm" : "xen")))
goto no_memory;
defaultArch = virCapabilitiesDefaultGuestArch(priv->caps, def->os.type, virDomainVirtTypeToString(def->virtType));
if (defaultArch == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("no supported architecture for os type '%s'"),
def->os.type);
goto cleanup;
}
if (!(def->os.arch = strdup(defaultArch)))
goto no_memory;
defaultMachine = virCapabilitiesDefaultGuestMachine(priv->caps,
def->os.type,
def->os.arch,
virDomainVirtTypeToString(def->virtType));
if (defaultMachine != NULL) {
if (!(def->os.machine = strdup(defaultMachine)))
goto no_memory;
}
if (hvm) {
const char *boot;
if (xenXMConfigCopyString(conf, "kernel", &def->os.loader) < 0)
goto cleanup;
if (xenXMConfigGetString(conf, "boot", &boot, "c") < 0)
goto cleanup;
for (i = 0 ; i < VIR_DOMAIN_BOOT_LAST && boot[i] ; i++) {
switch (*boot) {
case 'a':
def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY;
break;
case 'd':
def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM;
break;
case 'n':
def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET;
break;
case 'c':
default:
def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK;
break;
}
def->os.nBootDevs++;
}
} else {
if (xenXMConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "extra", &def->os.cmdline) < 0)
goto cleanup;
}
if (xenXMConfigGetULong(conf, "memory", &def->memory, MIN_XEN_GUEST_SIZE * 2) < 0)
goto cleanup;
if (xenXMConfigGetULong(conf, "maxmem", &def->maxmem, def->memory) < 0)
goto cleanup;
def->memory *= 1024;
def->maxmem *= 1024;
if (xenXMConfigGetULong(conf, "vcpus", &def->vcpus, 1) < 0)
goto cleanup;
if (xenXMConfigGetString(conf, "cpus", &str, NULL) < 0)
goto cleanup;
if (str) {
def->cpumasklen = 4096;
if (VIR_ALLOC_N(def->cpumask, def->cpumasklen) < 0)
goto no_memory;
if (virDomainCpuSetParse(&str, 0,
def->cpumask, def->cpumasklen) < 0)
goto cleanup;
}
if (xenXMConfigGetString(conf, "on_poweroff", &str, "destroy") < 0)
goto cleanup;
if ((def->onPoweroff = virDomainLifecycleTypeFromString(str)) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unexpected value %s for on_poweroff"), str);
goto cleanup;
}
if (xenXMConfigGetString(conf, "on_reboot", &str, "restart") < 0)
goto cleanup;
if ((def->onReboot = virDomainLifecycleTypeFromString(str)) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unexpected value %s for on_reboot"), str);
goto cleanup;
}
if (xenXMConfigGetString(conf, "on_crash", &str, "restart") < 0)
goto cleanup;
if ((def->onCrash = virDomainLifecycleTypeFromString(str)) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unexpected value %s for on_crash"), str);
goto cleanup;
}
if (hvm) {
if (xenXMConfigGetBool(conf, "pae", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_PAE);
if (xenXMConfigGetBool(conf, "acpi", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_ACPI);
if (xenXMConfigGetBool(conf, "apic", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_APIC);
}
if (xenXMConfigGetBool(conf, "localtime", &vmlocaltime, 0) < 0)
goto cleanup;
def->clock.offset = vmlocaltime ?
VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME :
VIR_DOMAIN_CLOCK_OFFSET_UTC;
if (xenXMConfigCopyStringOpt(conf, "device_model", &def->emulator) < 0)
goto cleanup;
list = virConfGetValue(conf, "disk");
if (list && list->type == VIR_CONF_LIST) {
list = list->list;
while (list) {
char *head;
char *offset;
char *tmp;
if ((list->type != VIR_CONF_STRING) || (list->str == NULL))
goto skipdisk;
head = list->str;
if (VIR_ALLOC(disk) < 0)
goto no_memory;
/*
* Disks have 3 components, SOURCE,DEST-DEVICE,MODE
* eg, phy:/dev/HostVG/XenGuest1,xvda,w
* The SOURCE is usually prefixed with a driver type,
* and optionally driver sub-type
* The DEST-DEVICE is optionally post-fixed with disk type
*/
/* Extract the source file path*/
if (!(offset = strchr(head, ',')))
goto skipdisk;
if ((offset - head) >= (PATH_MAX-1))
goto skipdisk;
if (offset == head) {
disk->src = NULL; /* No source file given, eg CDROM with no media */
} else {
if (VIR_ALLOC_N(disk->src, (offset - head) + 1) < 0)
goto no_memory;
if (virStrncpy(disk->src, head, offset - head,
(offset - head) + 1) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Source file %s too big for destination"),
head);
goto cleanup;
}
}
head = offset + 1;
/* Remove legacy ioemu: junk */
if (STRPREFIX(head, "ioemu:"))
head = head + 6;
/* Extract the dest device name */
if (!(offset = strchr(head, ',')))
goto skipdisk;
if (VIR_ALLOC_N(disk->dst, (offset - head) + 1) < 0)
goto no_memory;
if (virStrncpy(disk->dst, head, offset - head,
(offset - head) + 1) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Dest file %s too big for destination"), head);
goto cleanup;
}
head = offset + 1;
/* Extract source driver type */
if (disk->src) {
/* The main type phy:, file:, tap: ... */
if ((tmp = strchr(disk->src, ':')) != NULL) {
if (VIR_ALLOC_N(disk->driverName, (tmp - disk->src) + 1) < 0)
goto no_memory;
if (virStrncpy(disk->driverName, disk->src,
(tmp - disk->src),
(tmp - disk->src) + 1) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Driver name %s too big for destination"),
disk->src);
goto cleanup;
}
/* Strip the prefix we found off the source file name */
memmove(disk->src, disk->src+(tmp-disk->src)+1,
strlen(disk->src)-(tmp-disk->src));
}
/* And the sub-type for tap:XXX: type */
if (disk->driverName &&
STREQ(disk->driverName, "tap")) {
if (!(tmp = strchr(disk->src, ':')))
goto skipdisk;
if (VIR_ALLOC_N(disk->driverType, (tmp - disk->src) + 1) < 0)
goto no_memory;
if (virStrncpy(disk->driverType, disk->src,
(tmp - disk->src),
(tmp - disk->src) + 1) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Driver type %s too big for destination"),
disk->src);
goto cleanup;
}
/* Strip the prefix we found off the source file name */
memmove(disk->src, disk->src+(tmp-disk->src)+1,
strlen(disk->src)-(tmp-disk->src));
}
}
/* No source, or driver name, so fix to phy: */
if (!disk->driverName &&
!(disk->driverName = strdup("phy")))
goto no_memory;
/* phy: type indicates a block device */
disk->type = STREQ(disk->driverName, "phy") ?
VIR_DOMAIN_DISK_TYPE_BLOCK : VIR_DOMAIN_DISK_TYPE_FILE;
/* Check for a :cdrom/:disk postfix */
disk->device = VIR_DOMAIN_DISK_DEVICE_DISK;
if ((tmp = strchr(disk->dst, ':')) != NULL) {
if (STREQ(tmp, ":cdrom"))
disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
tmp[0] = '\0';
}
if (STRPREFIX(disk->dst, "xvd") || !hvm) {
disk->bus = VIR_DOMAIN_DISK_BUS_XEN;
} else if (STRPREFIX(disk->dst, "sd")) {
disk->bus = VIR_DOMAIN_DISK_BUS_SCSI;
} else {
disk->bus = VIR_DOMAIN_DISK_BUS_IDE;
}
if (STREQ(head, "r") ||
STREQ(head, "ro"))
disk->readonly = 1;
else if ((STREQ(head, "w!")) ||
(STREQ(head, "!")))
disk->shared = 1;
/* Maintain list in sorted order according to target device name */
if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0)
goto no_memory;
def->disks[def->ndisks++] = disk;
disk = NULL;
skipdisk:
list = list->next;
virDomainDiskDefFree(disk);
}
}
if (hvm && priv->xendConfigVersion == 1) {
if (xenXMConfigGetString(conf, "cdrom", &str, NULL) < 0)
goto cleanup;
if (str) {
if (VIR_ALLOC(disk) < 0)
goto no_memory;
disk->type = VIR_DOMAIN_DISK_TYPE_FILE;
disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
if (!(disk->driverName = strdup("file")))
goto no_memory;
if (!(disk->src = strdup(str)))
goto no_memory;
if (!(disk->dst = strdup("hdc")))
goto no_memory;
disk->bus = VIR_DOMAIN_DISK_BUS_IDE;
disk->readonly = 1;
if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0)
goto no_memory;
def->disks[def->ndisks++] = disk;
disk = NULL;
}
}
list = virConfGetValue(conf, "vif");
if (list && list->type == VIR_CONF_LIST) {
list = list->list;
while (list) {
char script[PATH_MAX];
char model[10];
char type[10];
char ip[16];
char mac[18];
char bridge[50];
char vifname[50];
char *key;
bridge[0] = '\0';
mac[0] = '\0';
script[0] = '\0';
ip[0] = '\0';
model[0] = '\0';
type[0] = '\0';
vifname[0] = '\0';
if ((list->type != VIR_CONF_STRING) || (list->str == NULL))
goto skipnic;
key = list->str;
while (key) {
char *data;
char *nextkey = strchr(key, ',');
if (!(data = strchr(key, '=')))
goto skipnic;
data++;
if (STRPREFIX(key, "mac=")) {
int len = nextkey ? (nextkey - data) : sizeof(mac) - 1;
if (virStrncpy(mac, data, len, sizeof(mac)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("MAC address %s too big for destination"),
data);
goto skipnic;
}
} else if (STRPREFIX(key, "bridge=")) {
int len = nextkey ? (nextkey - data) : sizeof(bridge) - 1;
if (virStrncpy(bridge, data, len, sizeof(bridge)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Bridge %s too big for destination"),
data);
goto skipnic;
}
} else if (STRPREFIX(key, "script=")) {
int len = nextkey ? (nextkey - data) : sizeof(script) - 1;
if (virStrncpy(script, data, len, sizeof(script)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Script %s too big for destination"),
data);
goto skipnic;
}
} else if (STRPREFIX(key, "model=")) {
int len = nextkey ? (nextkey - data) : sizeof(model) - 1;
if (virStrncpy(model, data, len, sizeof(model)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Model %s too big for destination"), data);
goto skipnic;
}
} else if (STRPREFIX(key, "type=")) {
int len = nextkey ? (nextkey - data) : sizeof(type) - 1;
if (virStrncpy(type, data, len, sizeof(type)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Type %s too big for destination"), data);
goto skipnic;
}
} else if (STRPREFIX(key, "vifname=")) {
int len = nextkey ? (nextkey - data) : sizeof(vifname) - 1;
if (virStrncpy(vifname, data, len, sizeof(vifname)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Vifname %s too big for destination"),
data);
goto skipnic;
}
} else if (STRPREFIX(key, "ip=")) {
int len = nextkey ? (nextkey - data) : sizeof(ip) - 1;
if (virStrncpy(ip, data, len, sizeof(ip)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("IP %s too big for destination"), data);
goto skipnic;
}
}
while (nextkey && (nextkey[0] == ',' ||
nextkey[0] == ' ' ||
nextkey[0] == '\t'))
nextkey++;
key = nextkey;
}
if (VIR_ALLOC(net) < 0)
goto no_memory;
if (mac[0]) {
if (virParseMacAddr(mac, net->mac) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("malformed mac address '%s'"), mac);
goto cleanup;
}
}
if (bridge[0] || STREQ(script, "vif-bridge") ||
STREQ(script, "vif-vnic")) {
net->type = VIR_DOMAIN_NET_TYPE_BRIDGE;
} else {
net->type = VIR_DOMAIN_NET_TYPE_ETHERNET;
}
if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
if (bridge[0] &&
!(net->data.bridge.brname = strdup(bridge)))
goto no_memory;
if (script[0] &&
!(net->data.bridge.script = strdup(script)))
goto no_memory;
if (ip[0] &&
!(net->data.bridge.ipaddr = strdup(ip)))
goto no_memory;
} else {
if (script[0] &&
!(net->data.ethernet.script = strdup(script)))
goto no_memory;
if (ip[0] &&
!(net->data.ethernet.ipaddr = strdup(ip)))
goto no_memory;
}
if (model[0] &&
!(net->model = strdup(model)))
goto no_memory;
if (!model[0] && type[0] &&
STREQ(type, "netfront") &&
!(net->model = strdup("netfront")))
goto no_memory;
if (vifname[0] &&
!(net->ifname = strdup(vifname)))
goto no_memory;
if (VIR_REALLOC_N(def->nets, def->nnets+1) < 0)
goto no_memory;
def->nets[def->nnets++] = net;
net = NULL;
skipnic:
list = list->next;
virDomainNetDefFree(net);
}
}
list = virConfGetValue(conf, "pci");
if (list && list->type == VIR_CONF_LIST) {
list = list->list;
while (list) {
char domain[5];
char bus[3];
char slot[3];
char func[2];
char *key, *nextkey;
int domainID;
int busID;
int slotID;
int funcID;
domain[0] = bus[0] = slot[0] = func[0] = '\0';
if ((list->type != VIR_CONF_STRING) || (list->str == NULL))
goto skippci;
/* pci=['0000:00:1b.0','0000:00:13.0'] */
if (!(key = list->str))
goto skippci;
if (!(nextkey = strchr(key, ':')))
goto skippci;
if (virStrncpy(domain, key, (nextkey - key), sizeof(domain)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Domain %s too big for destination"), key);
goto skippci;
}
key = nextkey + 1;
if (!(nextkey = strchr(key, ':')))
goto skippci;
if (virStrncpy(bus, key, (nextkey - key), sizeof(bus)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Bus %s too big for destination"), key);
goto skippci;
}
key = nextkey + 1;
if (!(nextkey = strchr(key, '.')))
goto skippci;
if (virStrncpy(slot, key, (nextkey - key), sizeof(slot)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Slot %s too big for destination"), key);
goto skippci;
}
key = nextkey + 1;
if (strlen(key) != 1)
goto skippci;
if (virStrncpy(func, key, 1, sizeof(func)) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("Function %s too big for destination"), key);
goto skippci;
}
if (virStrToLong_i(domain, NULL, 16, &domainID) < 0)
goto skippci;
if (virStrToLong_i(bus, NULL, 16, &busID) < 0)
goto skippci;
if (virStrToLong_i(slot, NULL, 16, &slotID) < 0)
goto skippci;
if (virStrToLong_i(func, NULL, 16, &funcID) < 0)
goto skippci;
if (VIR_ALLOC(hostdev) < 0)
goto no_memory;
hostdev->managed = 0;
hostdev->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI;
hostdev->source.subsys.u.pci.domain = domainID;
hostdev->source.subsys.u.pci.bus = busID;
hostdev->source.subsys.u.pci.slot = slotID;
hostdev->source.subsys.u.pci.function = funcID;
if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0)
goto no_memory;
def->hostdevs[def->nhostdevs++] = hostdev;
hostdev = NULL;
skippci:
list = list->next;
}
}
if (hvm) {
if (xenXMConfigGetString(conf, "usbdevice", &str, NULL) < 0)
goto cleanup;
if (str &&
(STREQ(str, "tablet") ||
STREQ(str, "mouse"))) {
virDomainInputDefPtr input;
if (VIR_ALLOC(input) < 0)
goto no_memory;
input->bus = VIR_DOMAIN_INPUT_BUS_USB;
input->type = STREQ(str, "tablet") ?
VIR_DOMAIN_INPUT_TYPE_TABLET :
VIR_DOMAIN_INPUT_TYPE_MOUSE;
if (VIR_ALLOC_N(def->inputs, 1) < 0) {
virDomainInputDefFree(input);
goto no_memory;
}
def->inputs[0] = input;
def->ninputs = 1;
}
}
/* HVM guests, or old PV guests use this config format */
if (hvm || priv->xendConfigVersion < 3) {
if (xenXMConfigGetBool(conf, "vnc", &val, 0) < 0)
goto cleanup;
if (val) {
if (VIR_ALLOC(graphics) < 0)
goto no_memory;
graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_VNC;
if (xenXMConfigGetBool(conf, "vncunused", &val, 1) < 0)
goto cleanup;
graphics->data.vnc.autoport = val ? 1 : 0;
if (!graphics->data.vnc.autoport) {
unsigned long vncdisplay;
if (xenXMConfigGetULong(conf, "vncdisplay", &vncdisplay, 0) < 0)
goto cleanup;
graphics->data.vnc.port = (int)vncdisplay + 5900;
}
if (xenXMConfigCopyStringOpt(conf, "vnclisten", &graphics->data.vnc.listenAddr) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "vncpasswd", &graphics->data.vnc.passwd) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "keymap", &graphics->data.vnc.keymap) < 0)
goto cleanup;
if (VIR_ALLOC_N(def->graphics, 1) < 0)
goto no_memory;
def->graphics[0] = graphics;
def->ngraphics = 1;
graphics = NULL;
} else {
if (xenXMConfigGetBool(conf, "sdl", &val, 0) < 0)
goto cleanup;
if (val) {
if (VIR_ALLOC(graphics) < 0)
goto no_memory;
graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_SDL;
if (xenXMConfigCopyStringOpt(conf, "display", &graphics->data.sdl.display) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conf, "xauthority", &graphics->data.sdl.xauth) < 0)
goto cleanup;
if (VIR_ALLOC_N(def->graphics, 1) < 0)
goto no_memory;
def->graphics[0] = graphics;
def->ngraphics = 1;
graphics = NULL;
}
}
}
if (!hvm && def->graphics == NULL) { /* New PV guests use this format */
list = virConfGetValue(conf, "vfb");
if (list && list->type == VIR_CONF_LIST &&
list->list && list->list->type == VIR_CONF_STRING &&
list->list->str) {
char vfb[MAX_VFB];
char *key = vfb;
if (virStrcpyStatic(vfb, list->list->str) == NULL) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("VFB %s too big for destination"),
list->list->str);
goto cleanup;
}
if (VIR_ALLOC(graphics) < 0)
goto no_memory;
if (strstr(key, "type=sdl"))
graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_SDL;
else
graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_VNC;
while (key) {
char *nextkey = strchr(key, ',');
char *end = nextkey;
if (nextkey) {
*end = '\0';
nextkey++;
}
if (!strchr(key, '='))
break;
if (graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC) {
if (STRPREFIX(key, "vncunused=")) {
if (STREQ(key + 10, "1"))
graphics->data.vnc.autoport = 1;
} else if (STRPREFIX(key, "vnclisten=")) {
if (!(graphics->data.vnc.listenAddr = strdup(key + 10)))
goto no_memory;
} else if (STRPREFIX(key, "vncpasswd=")) {
if (!(graphics->data.vnc.passwd = strdup(key + 10)))
goto no_memory;
} else if (STRPREFIX(key, "keymap=")) {
if (!(graphics->data.vnc.keymap = strdup(key + 7)))
goto no_memory;
} else if (STRPREFIX(key, "vncdisplay=")) {
graphics->data.vnc.port = strtol(key+11, NULL, 10) + 5900;
}
} else {
if (STRPREFIX(key, "display=")) {
if (!(graphics->data.sdl.display = strdup(key + 8)))
goto no_memory;
} else if (STRPREFIX(key, "xauthority=")) {
if (!(graphics->data.sdl.xauth = strdup(key + 11)))
goto no_memory;
}
}
while (nextkey && (nextkey[0] == ',' ||
nextkey[0] == ' ' ||
nextkey[0] == '\t'))
nextkey++;
key = nextkey;
}
if (VIR_ALLOC_N(def->graphics, 1) < 0)
goto no_memory;
def->graphics[0] = graphics;
def->ngraphics = 1;
graphics = NULL;
}
}
if (hvm) {
virDomainChrDefPtr chr = NULL;
if (xenXMConfigGetString(conf, "parallel", &str, NULL) < 0)
goto cleanup;
if (str && STRNEQ(str, "none") &&
!(chr = xenDaemonParseSxprChar(str, NULL)))
goto cleanup;
if (chr) {
if (VIR_ALLOC_N(def->parallels, 1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
chr->targetType = VIR_DOMAIN_CHR_TARGET_TYPE_PARALLEL;
def->parallels[0] = chr;
def->nparallels++;
chr = NULL;
}
if (xenXMConfigGetString(conf, "serial", &str, NULL) < 0)
goto cleanup;
if (str && STRNEQ(str, "none") &&
!(chr = xenDaemonParseSxprChar(str, NULL)))
goto cleanup;
if (chr) {
if (VIR_ALLOC_N(def->serials, 1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
chr->targetType = VIR_DOMAIN_CHR_TARGET_TYPE_SERIAL;
def->serials[0] = chr;
def->nserials++;
}
} else {
if (!(def->console = xenDaemonParseSxprChar("pty", NULL)))
goto cleanup;
def->console->targetType = VIR_DOMAIN_CHR_TARGET_TYPE_CONSOLE;
}
if (hvm) {
if (xenXMConfigGetString(conf, "soundhw", &str, NULL) < 0)
goto cleanup;
if (str &&
xenDaemonParseSxprSound(def, str) < 0)
goto cleanup;
}
return def;
no_memory:
virReportOOMError();
/* fallthrough */
cleanup:
virDomainGraphicsDefFree(graphics);
virDomainNetDefFree(net);
virDomainDiskDefFree(disk);
virDomainDefFree(def);
return NULL;
}
/*
* Turn a config record into a lump of XML describing the
* domain, suitable for later feeding for virDomainCreateXML
*/
char *xenXMDomainDumpXML(virDomainPtr domain, int flags) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
char *ret = NULL;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return(NULL);
}
if (domain->id != -1)
return (NULL);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
ret = virDomainDefFormat(entry->def, flags);
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/*
* Update amount of memory in the config file
*/
int xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
int ret = -1;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (-1);
}
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
if (domain->id != -1)
return (-1);
if (memory < 1024 * MIN_XEN_GUEST_SIZE)
return (-1);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
entry->def->memory = memory;
if (entry->def->memory > entry->def->maxmem)
entry->def->memory = entry->def->maxmem;
/* If this fails, should we try to undo our changes to the
* in-memory representation of the config file. I say not!
*/
if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
goto cleanup;
ret = 0;
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/*
* Update maximum memory limit in config
*/
int xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
int ret = -1;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (-1);
}
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
if (domain->id != -1)
return (-1);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
entry->def->maxmem = memory;
if (entry->def->memory > entry->def->maxmem)
entry->def->memory = entry->def->maxmem;
/* If this fails, should we try to undo our changes to the
* in-memory representation of the config file. I say not!
*/
if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
goto cleanup;
ret = 0;
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/*
* Get max memory limit from config
*/
unsigned long xenXMDomainGetMaxMemory(virDomainPtr domain) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
unsigned long ret = 0;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (0);
}
if (domain->id != -1)
return (0);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
ret = entry->def->maxmem;
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/*
* Set the VCPU count in config
*/
int xenXMDomainSetVcpus(virDomainPtr domain, unsigned int vcpus) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
int ret = -1;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (-1);
}
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
if (domain->id != -1)
return (-1);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
entry->def->vcpus = vcpus;
/* If this fails, should we try to undo our changes to the
* in-memory representation of the config file. I say not!
*/
if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
goto cleanup;
ret = 0;
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/**
* xenXMDomainPinVcpu:
* @domain: pointer to domain object
* @vcpu: virtual CPU number (reserved)
* @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes)
* @maplen: length of cpumap in bytes
*
* Set the vcpu affinity in config
*
* Returns 0 for success; -1 (with errno) on error
*/
int xenXMDomainPinVcpu(virDomainPtr domain,
unsigned int vcpu ATTRIBUTE_UNUSED,
unsigned char *cpumap, int maplen)
{
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
virBuffer mapbuf = VIR_BUFFER_INITIALIZER;
char *mapstr = NULL, *mapsave = NULL;
int i, j, n, comma = 0;
int ret = -1;
char *cpuset = NULL;
int maxcpu = XEN_MAX_PHYSICAL_CPU;
if (domain == NULL || domain->conn == NULL || domain->name == NULL
|| cpumap == NULL || maplen < 1 || maplen > (int)sizeof(cpumap_t)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
xenXMError(VIR_ERR_INVALID_ARG,
"%s", _("read only connection"));
return -1;
}
if (domain->id != -1) {
xenXMError(VIR_ERR_INVALID_ARG,
"%s", _("not inactive domain"));
return -1;
}
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) {
xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("virHashLookup"));
goto cleanup;
}
if (!(entry = virHashLookup(priv->configCache, filename))) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("can't retrieve config file for domain"));
goto cleanup;
}
/* from bit map, build character string of mapped CPU numbers */
for (i = 0; i < maplen; i++)
for (j = 0; j < 8; j++)
if ((cpumap[i] & (1 << j))) {
n = i*8 + j;
if (comma)
virBufferAddLit (&mapbuf, ",");
comma = 1;
virBufferVSprintf (&mapbuf, "%d", n);
}
if (virBufferError(&mapbuf)) {
virBufferFreeAndReset(&mapbuf);
virReportOOMError();
goto cleanup;
}
mapstr = virBufferContentAndReset(&mapbuf);
mapsave = mapstr;
if (VIR_ALLOC_N(cpuset, maxcpu) < 0) {
virReportOOMError();
goto cleanup;
}
if (virDomainCpuSetParse((const char **)&mapstr, 0,
cpuset, maxcpu) < 0)
goto cleanup;
VIR_FREE(entry->def->cpumask);
entry->def->cpumask = cpuset;
entry->def->cpumasklen = maxcpu;
cpuset = NULL;
if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(mapsave);
VIR_FREE(cpuset);
xenUnifiedUnlock(priv);
return (ret);
}
/*
* Find an inactive domain based on its name
*/
virDomainPtr xenXMDomainLookupByName(virConnectPtr conn, const char *domname) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
virDomainPtr ret = NULL;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__);
return (NULL);
}
if (domname == NULL) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (NULL);
}
priv = conn->privateData;
xenUnifiedLock(priv);
if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0)
goto cleanup;
if (!(filename = virHashLookup(priv->nameConfigMap, domname)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
if (!(ret = virGetDomain(conn, domname, entry->def->uuid)))
goto cleanup;
/* Ensure its marked inactive, because may be cached
handle to a previously active domain */
ret->id = -1;
cleanup:
xenUnifiedUnlock(priv);
return (ret);
}
/*
* Hash table iterator to search for a domain based on UUID
*/
static int xenXMDomainSearchForUUID(const void *payload, const char *name ATTRIBUTE_UNUSED, const void *data) {
const unsigned char *wantuuid = (const unsigned char *)data;
const xenXMConfCachePtr entry = (const xenXMConfCachePtr)payload;
if (!memcmp(entry->def->uuid, wantuuid, VIR_UUID_BUFLEN))
return (1);
return (0);
}
/*
* Find an inactive domain based on its UUID
*/
virDomainPtr xenXMDomainLookupByUUID(virConnectPtr conn,
const unsigned char *uuid) {
xenUnifiedPrivatePtr priv;
xenXMConfCachePtr entry;
virDomainPtr ret = NULL;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__);
return (NULL);
}
if (uuid == NULL) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (NULL);
}
priv = conn->privateData;
xenUnifiedLock(priv);
if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0)
goto cleanup;
if (!(entry = virHashSearch(priv->configCache, xenXMDomainSearchForUUID, (const void *)uuid)))
goto cleanup;
if (!(ret = virGetDomain(conn, entry->def->name, uuid)))
goto cleanup;
/* Ensure its marked inactive, because may be cached
handle to a previously active domain */
ret->id = -1;
cleanup:
xenUnifiedUnlock(priv);
return (ret);
}
/*
* Start a domain from an existing defined config file
*/
int xenXMDomainCreate(virDomainPtr domain) {
char *sexpr;
int ret = -1;
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (domain->id != -1)
return (-1);
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto error;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto error;
if (!(sexpr = xenDaemonFormatSxpr(domain->conn, entry->def, priv->xendConfigVersion)))
goto error;
ret = xenDaemonDomainCreateXML(domain->conn, sexpr);
VIR_FREE(sexpr);
if (ret != 0)
goto error;
if ((ret = xenDaemonDomainLookupByName_ids(domain->conn, domain->name,
entry->def->uuid)) < 0)
goto error;
domain->id = ret;
if (xend_wait_for_devices(domain->conn, domain->name) < 0)
goto error;
if (xenDaemonDomainResume(domain) < 0)
goto error;
xenUnifiedUnlock(priv);
return (0);
error:
if (domain->id != -1) {
xenDaemonDomainDestroy(domain);
domain->id = -1;
}
xenUnifiedUnlock(priv);
return (-1);
}
static
int xenXMConfigSetInt(virConfPtr conf, const char *setting, long l) {
virConfValuePtr value = NULL;
if (VIR_ALLOC(value) < 0) {
virReportOOMError();
return -1;
}
value->type = VIR_CONF_LONG;
value->next = NULL;
value->l = l;
return virConfSetValue(conf, setting, value);
}
static
int xenXMConfigSetString(virConfPtr conf, const char *setting, const char *str) {
virConfValuePtr value = NULL;
if (VIR_ALLOC(value) < 0) {
virReportOOMError();
return -1;
}
value->type = VIR_CONF_STRING;
value->next = NULL;
if (!(value->str = strdup(str))) {
VIR_FREE(value);
virReportOOMError();
return -1;
}
return virConfSetValue(conf, setting, value);
}
static int xenXMDomainConfigFormatDisk(virConfValuePtr list,
virDomainDiskDefPtr disk,
int hvm,
int xendConfigVersion)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virConfValuePtr val, tmp;
if(disk->src) {
if (disk->driverName) {
virBufferVSprintf(&buf, "%s:", disk->driverName);
if (STREQ(disk->driverName, "tap"))
virBufferVSprintf(&buf, "%s:", disk->driverType ? disk->driverType : "aio");
} else {
switch (disk->type) {
case VIR_DOMAIN_DISK_TYPE_FILE:
virBufferAddLit(&buf, "file:");
break;
case VIR_DOMAIN_DISK_TYPE_BLOCK:
virBufferAddLit(&buf, "phy:");
break;
default:
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk type %s"),
virDomainDiskTypeToString(disk->type));
goto cleanup;
}
}
virBufferVSprintf(&buf, "%s", disk->src);
}
virBufferAddLit(&buf, ",");
if (hvm && xendConfigVersion == 1)
virBufferAddLit(&buf, "ioemu:");
virBufferVSprintf(&buf, "%s", disk->dst);
if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
virBufferAddLit(&buf, ":cdrom");
if (disk->readonly)
virBufferAddLit(&buf, ",r");
else if (disk->shared)
virBufferAddLit(&buf, ",!");
else
virBufferAddLit(&buf, ",w");
if (virBufferError(&buf)) {
virReportOOMError();
goto cleanup;
}
if (VIR_ALLOC(val) < 0) {
virReportOOMError();
goto cleanup;
}
val->type = VIR_CONF_STRING;
val->str = virBufferContentAndReset(&buf);
tmp = list->list;
while (tmp && tmp->next)
tmp = tmp->next;
if (tmp)
tmp->next = val;
else
list->list = val;
return 0;
cleanup:
virBufferFreeAndReset(&buf);
return -1;
}
static int xenXMDomainConfigFormatNet(virConnectPtr conn,
virConfValuePtr list,
virDomainNetDefPtr net,
int hvm)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virConfValuePtr val, tmp;
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
virBufferVSprintf(&buf, "mac=%02x:%02x:%02x:%02x:%02x:%02x",
net->mac[0], net->mac[1],
net->mac[2], net->mac[3],
net->mac[4], net->mac[5]);
switch (net->type) {
case VIR_DOMAIN_NET_TYPE_BRIDGE:
virBufferVSprintf(&buf, ",bridge=%s", net->data.bridge.brname);
if (net->data.bridge.ipaddr)
virBufferVSprintf(&buf, ",ip=%s", net->data.bridge.ipaddr);
virBufferVSprintf(&buf, ",script=%s", DEFAULT_VIF_SCRIPT);
break;
case VIR_DOMAIN_NET_TYPE_ETHERNET:
if (net->data.ethernet.script)
virBufferVSprintf(&buf, ",script=%s", net->data.ethernet.script);
if (net->data.ethernet.ipaddr)
virBufferVSprintf(&buf, ",ip=%s", net->data.ethernet.ipaddr);
break;
case VIR_DOMAIN_NET_TYPE_NETWORK:
{
virNetworkPtr network = virNetworkLookupByName(conn, net->data.network.name);
char *bridge;
if (!network) {
xenXMError(VIR_ERR_NO_NETWORK, "%s",
net->data.network.name);
return -1;
}
bridge = virNetworkGetBridgeName(network);
virNetworkFree(network);
if (!bridge) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("network %s is not active"),
net->data.network.name);
return -1;
}
virBufferVSprintf(&buf, ",bridge=%s", bridge);
virBufferVSprintf(&buf, ",script=%s", DEFAULT_VIF_SCRIPT);
}
break;
default:
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unsupported network type %d"),
net->type);
goto cleanup;
}
if (!hvm) {
if (net->model != NULL)
virBufferVSprintf(&buf, ",model=%s", net->model);
}
else if (net->model == NULL) {
/*
* apparently type ioemu breaks paravirt drivers on HVM so skip this
* from XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU
*/
if (priv->xendConfigVersion <= XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU)
virBufferAddLit(&buf, ",type=ioemu");
}
else if (STREQ(net->model, "netfront")) {
virBufferAddLit(&buf, ",type=netfront");
}
else {
virBufferVSprintf(&buf, ",model=%s", net->model);
virBufferAddLit(&buf, ",type=ioemu");
}
if (net->ifname)
virBufferVSprintf(&buf, ",vifname=%s",
net->ifname);
if (virBufferError(&buf)) {
virReportOOMError();
goto cleanup;
}
if (VIR_ALLOC(val) < 0) {
virReportOOMError();
goto cleanup;
}
val->type = VIR_CONF_STRING;
val->str = virBufferContentAndReset(&buf);
tmp = list->list;
while (tmp && tmp->next)
tmp = tmp->next;
if (tmp)
tmp->next = val;
else
list->list = val;
return 0;
cleanup:
virBufferFreeAndReset(&buf);
return -1;
}
static int
xenXMDomainConfigFormatPCI(virConfPtr conf,
virDomainDefPtr def)
{
virConfValuePtr pciVal = NULL;
int hasPCI = 0;
int i;
for (i = 0 ; i < def->nhostdevs ; i++)
if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
def->hostdevs[i]->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
hasPCI = 1;
if (!hasPCI)
return 0;
if (VIR_ALLOC(pciVal) < 0) {
virReportOOMError();
return -1;
}
pciVal->type = VIR_CONF_LIST;
pciVal->list = NULL;
for (i = 0 ; i < def->nhostdevs ; i++) {
if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
def->hostdevs[i]->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) {
virConfValuePtr val, tmp;
char *buf;
if (virAsprintf(&buf, "%04x:%02x:%02x.%x",
def->hostdevs[i]->source.subsys.u.pci.domain,
def->hostdevs[i]->source.subsys.u.pci.bus,
def->hostdevs[i]->source.subsys.u.pci.slot,
def->hostdevs[i]->source.subsys.u.pci.function) < 0) {
virReportOOMError();
goto error;
}
if (VIR_ALLOC(val) < 0) {
VIR_FREE(buf);
virReportOOMError();
goto error;
}
val->type = VIR_CONF_STRING;
val->str = buf;
tmp = pciVal->list;
while (tmp && tmp->next)
tmp = tmp->next;
if (tmp)
tmp->next = val;
else
pciVal->list = val;
}
}
if (pciVal->list != NULL) {
int ret = virConfSetValue(conf, "pci", pciVal);
pciVal = NULL;
if (ret < 0)
return -1;
}
VIR_FREE(pciVal);
return 0;
error:
virConfFreeValue(pciVal);
return -1;
}
virConfPtr xenXMDomainConfigFormat(virConnectPtr conn,
virDomainDefPtr def) {
virConfPtr conf = NULL;
int hvm = 0, i;
xenUnifiedPrivatePtr priv;
char *cpus = NULL;
const char *lifecycle;
char uuid[VIR_UUID_STRING_BUFLEN];
virConfValuePtr diskVal = NULL;
virConfValuePtr netVal = NULL;
priv = (xenUnifiedPrivatePtr) conn->privateData;
if (!(conf = virConfNew()))
goto cleanup;
if (xenXMConfigSetString(conf, "name", def->name) < 0)
goto no_memory;
virUUIDFormat(def->uuid, uuid);
if (xenXMConfigSetString(conf, "uuid", uuid) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "maxmem", def->maxmem / 1024) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "memory", def->memory / 1024) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "vcpus", def->vcpus) < 0)
goto no_memory;
if ((def->cpumask != NULL) &&
((cpus = virDomainCpuSetFormat(def->cpumask,
def->cpumasklen)) == NULL))
goto cleanup;
if (cpus &&
xenXMConfigSetString(conf, "cpus", cpus) < 0)
goto no_memory;
VIR_FREE(cpus);
hvm = STREQ(def->os.type, "hvm") ? 1 : 0;
if (hvm) {
char boot[VIR_DOMAIN_BOOT_LAST+1];
if (xenXMConfigSetString(conf, "builder", "hvm") < 0)
goto no_memory;
if (def->os.loader &&
xenXMConfigSetString(conf, "kernel", def->os.loader) < 0)
goto no_memory;
for (i = 0 ; i < def->os.nBootDevs ; i++) {
switch (def->os.bootDevs[i]) {
case VIR_DOMAIN_BOOT_FLOPPY:
boot[i] = 'a';
break;
case VIR_DOMAIN_BOOT_CDROM:
boot[i] = 'd';
break;
case VIR_DOMAIN_BOOT_NET:
boot[i] = 'n';
break;
case VIR_DOMAIN_BOOT_DISK:
default:
boot[i] = 'c';
break;
}
}
if (!def->os.nBootDevs) {
boot[0] = 'c';
boot[1] = '\0';
} else {
boot[def->os.nBootDevs] = '\0';
}
if (xenXMConfigSetString(conf, "boot", boot) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "pae",
(def->features &
(1 << VIR_DOMAIN_FEATURE_PAE)) ? 1 : 0) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "acpi",
(def->features &
(1 << VIR_DOMAIN_FEATURE_ACPI)) ? 1 : 0) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "apic",
(def->features &
(1 << VIR_DOMAIN_FEATURE_APIC)) ? 1 : 0) < 0)
goto no_memory;
if (def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME) {
if (def->clock.data.timezone) {
xenXMError(VIR_ERR_CONFIG_UNSUPPORTED,
"%s", _("configurable timezones are not supported"));
goto cleanup;
}
if (xenXMConfigSetInt(conf, "localtime", 1) < 0)
goto no_memory;
} else if (def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_UTC) {
if (xenXMConfigSetInt(conf, "localtime", 0) < 0)
goto no_memory;
} else {
/* XXX We could support Xen's rtc clock offset */
xenXMError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported clock offset '%s'"),
virDomainClockOffsetTypeToString(def->clock.offset));
goto cleanup;
}
if (priv->xendConfigVersion == 1) {
for (i = 0 ; i < def->ndisks ; i++) {
if (def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_CDROM &&
def->disks[i]->dst &&
STREQ(def->disks[i]->dst, "hdc") &&
def->disks[i]->src) {
if (xenXMConfigSetString(conf, "cdrom",
def->disks[i]->src) < 0)
goto no_memory;
break;
}
}
}
/* XXX floppy disks */
} else {
if (def->os.bootloader &&
xenXMConfigSetString(conf, "bootloader", def->os.bootloader) < 0)
goto no_memory;
if (def->os.bootloaderArgs &&
xenXMConfigSetString(conf, "bootloader_args", def->os.bootloaderArgs) < 0)
goto no_memory;
if (def->os.kernel &&
xenXMConfigSetString(conf, "kernel", def->os.kernel) < 0)
goto no_memory;
if (def->os.initrd &&
xenXMConfigSetString(conf, "ramdisk", def->os.initrd) < 0)
goto no_memory;
if (def->os.cmdline &&
xenXMConfigSetString(conf, "extra", def->os.cmdline) < 0)
goto no_memory;
}
if (!(lifecycle = virDomainLifecycleTypeToString(def->onPoweroff))) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unexpected lifecycle action %d"), def->onPoweroff);
goto cleanup;
}
if (xenXMConfigSetString(conf, "on_poweroff", lifecycle) < 0)
goto no_memory;
if (!(lifecycle = virDomainLifecycleTypeToString(def->onReboot))) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unexpected lifecycle action %d"), def->onReboot);
goto cleanup;
}
if (xenXMConfigSetString(conf, "on_reboot", lifecycle) < 0)
goto no_memory;
if (!(lifecycle = virDomainLifecycleTypeToString(def->onCrash))) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
_("unexpected lifecycle action %d"), def->onCrash);
goto cleanup;
}
if (xenXMConfigSetString(conf, "on_crash", lifecycle) < 0)
goto no_memory;
if (hvm) {
if (def->emulator &&
xenXMConfigSetString(conf, "device_model", def->emulator) < 0)
goto no_memory;
for (i = 0 ; i < def->ninputs ; i++) {
if (def->inputs[i]->bus == VIR_DOMAIN_INPUT_BUS_USB) {
if (xenXMConfigSetInt(conf, "usb", 1) < 0)
goto no_memory;
if (xenXMConfigSetString(conf, "usbdevice",
def->inputs[i]->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ?
"mouse" : "tablet") < 0)
goto no_memory;
break;
}
}
}
if (def->ngraphics == 1) {
if (priv->xendConfigVersion < (hvm ? 4 : XEND_CONFIG_MIN_VERS_PVFB_NEWCONF)) {
if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) {
if (xenXMConfigSetInt(conf, "sdl", 1) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "vnc", 0) < 0)
goto no_memory;
if (def->graphics[0]->data.sdl.display &&
xenXMConfigSetString(conf, "display",
def->graphics[0]->data.sdl.display) < 0)
goto no_memory;
if (def->graphics[0]->data.sdl.xauth &&
xenXMConfigSetString(conf, "xauthority",
def->graphics[0]->data.sdl.xauth) < 0)
goto no_memory;
} else {
if (xenXMConfigSetInt(conf, "sdl", 0) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "vnc", 1) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "vncunused",
def->graphics[0]->data.vnc.autoport ? 1 : 0) < 0)
goto no_memory;
if (!def->graphics[0]->data.vnc.autoport &&
xenXMConfigSetInt(conf, "vncdisplay",
def->graphics[0]->data.vnc.port - 5900) < 0)
goto no_memory;
if (def->graphics[0]->data.vnc.listenAddr &&
xenXMConfigSetString(conf, "vnclisten",
def->graphics[0]->data.vnc.listenAddr) < 0)
goto no_memory;
if (def->graphics[0]->data.vnc.passwd &&
xenXMConfigSetString(conf, "vncpasswd",
def->graphics[0]->data.vnc.passwd) < 0)
goto no_memory;
if (def->graphics[0]->data.vnc.keymap &&
xenXMConfigSetString(conf, "keymap",
def->graphics[0]->data.vnc.keymap) < 0)
goto no_memory;
}
} else {
virConfValuePtr vfb, disp;
char *vfbstr = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) {
virBufferAddLit(&buf, "type=sdl");
if (def->graphics[0]->data.sdl.display)
virBufferVSprintf(&buf, ",display=%s",
def->graphics[0]->data.sdl.display);
if (def->graphics[0]->data.sdl.xauth)
virBufferVSprintf(&buf, ",xauthority=%s",
def->graphics[0]->data.sdl.xauth);
} else {
virBufferAddLit(&buf, "type=vnc");
virBufferVSprintf(&buf, ",vncunused=%d",
def->graphics[0]->data.vnc.autoport ? 1 : 0);
if (!def->graphics[0]->data.vnc.autoport)
virBufferVSprintf(&buf, ",vncdisplay=%d",
def->graphics[0]->data.vnc.port - 5900);
if (def->graphics[0]->data.vnc.listenAddr)
virBufferVSprintf(&buf, ",vnclisten=%s",
def->graphics[0]->data.vnc.listenAddr);
if (def->graphics[0]->data.vnc.passwd)
virBufferVSprintf(&buf, ",vncpasswd=%s",
def->graphics[0]->data.vnc.passwd);
if (def->graphics[0]->data.vnc.keymap)
virBufferVSprintf(&buf, ",keymap=%s",
def->graphics[0]->data.vnc.keymap);
}
if (virBufferError(&buf)) {
virBufferFreeAndReset(&buf);
goto no_memory;
}
vfbstr = virBufferContentAndReset(&buf);
if (VIR_ALLOC(vfb) < 0) {
VIR_FREE(vfbstr);
goto no_memory;
}
if (VIR_ALLOC(disp) < 0) {
VIR_FREE(vfb);
VIR_FREE(vfbstr);
goto no_memory;
}
vfb->type = VIR_CONF_LIST;
vfb->list = disp;
disp->type = VIR_CONF_STRING;
disp->str = vfbstr;
if (virConfSetValue(conf, "vfb", vfb) < 0)
goto no_memory;
}
}
/* analyze of the devices */
if (VIR_ALLOC(diskVal) < 0)
goto no_memory;
diskVal->type = VIR_CONF_LIST;
diskVal->list = NULL;
for (i = 0 ; i < def->ndisks ; i++) {
if (priv->xendConfigVersion == 1 &&
def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_CDROM &&
def->disks[i]->dst &&
STREQ(def->disks[i]->dst, "hdc")) {
continue;
}
if (def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)
continue;
if (xenXMDomainConfigFormatDisk(diskVal, def->disks[i],
hvm, priv->xendConfigVersion) < 0)
goto cleanup;
}
if (diskVal->list != NULL) {
int ret = virConfSetValue(conf, "disk", diskVal);
diskVal = NULL;
if (ret < 0)
goto no_memory;
}
VIR_FREE(diskVal);
if (VIR_ALLOC(netVal) < 0)
goto no_memory;
netVal->type = VIR_CONF_LIST;
netVal->list = NULL;
for (i = 0 ; i < def->nnets ; i++) {
if (xenXMDomainConfigFormatNet(conn, netVal,
def->nets[i],
hvm) < 0)
goto cleanup;
}
if (netVal->list != NULL) {
int ret = virConfSetValue(conf, "vif", netVal);
netVal = NULL;
if (ret < 0)
goto no_memory;
}
VIR_FREE(netVal);
if (xenXMDomainConfigFormatPCI(conf, def) < 0)
goto cleanup;
if (hvm) {
if (def->nparallels) {
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *str;
int ret;
ret = xenDaemonFormatSxprChr(def->parallels[0], &buf);
str = virBufferContentAndReset(&buf);
if (ret == 0)
ret = xenXMConfigSetString(conf, "parallel", str);
VIR_FREE(str);
if (ret < 0)
goto no_memory;
} else {
if (xenXMConfigSetString(conf, "parallel", "none") < 0)
goto no_memory;
}
if (def->nserials) {
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *str;
int ret;
ret = xenDaemonFormatSxprChr(def->serials[0], &buf);
str = virBufferContentAndReset(&buf);
if (ret == 0)
ret = xenXMConfigSetString(conf, "serial", str);
VIR_FREE(str);
if (ret < 0)
goto no_memory;
} else {
if (xenXMConfigSetString(conf, "serial", "none") < 0)
goto no_memory;
}
if (def->sounds) {
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *str = NULL;
int ret = xenDaemonFormatSxprSound(def, &buf);
str = virBufferContentAndReset(&buf);
if (ret == 0)
ret = xenXMConfigSetString(conf, "soundhw", str);
VIR_FREE(str);
if (ret < 0)
goto no_memory;
}
}
return conf;
no_memory:
virReportOOMError();
cleanup:
virConfFreeValue(diskVal);
virConfFreeValue(netVal);
VIR_FREE(cpus);
if (conf)
virConfFree(conf);
return (NULL);
}
/*
* Create a config file for a domain, based on an XML
* document describing its config
*/
virDomainPtr xenXMDomainDefineXML(virConnectPtr conn, const char *xml) {
virDomainPtr ret;
char filename[PATH_MAX];
const char * oldfilename;
virDomainDefPtr def = NULL;
xenXMConfCachePtr entry = NULL;
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__);
return (NULL);
}
if (xml == NULL) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (NULL);
}
if (conn->flags & VIR_CONNECT_RO)
return (NULL);
xenUnifiedLock(priv);
if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0) {
xenUnifiedUnlock(priv);
return (NULL);
}
if (!(def = virDomainDefParseString(priv->caps, xml,
VIR_DOMAIN_XML_INACTIVE))) {
xenUnifiedUnlock(priv);
return (NULL);
}
/*
* check that if there is another domain defined with the same uuid
* it has the same name
*/
if ((entry = virHashSearch(priv->configCache, xenXMDomainSearchForUUID,
(const void *)&(def->uuid))) != NULL) {
if ((entry->def != NULL) && (entry->def->name != NULL) &&
(STRNEQ(def->name, entry->def->name))) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(entry->def->uuid, uuidstr);
xenXMError(VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined with uuid %s"),
entry->def->name, uuidstr);
entry = NULL;
goto error;
}
entry = NULL;
}
if (virHashLookup(priv->nameConfigMap, def->name)) {
/* domain exists, we will overwrite it */
if (!(oldfilename = (char *)virHashLookup(priv->nameConfigMap, def->name))) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("can't retrieve config filename for domain to overwrite"));
goto error;
}
if (!(entry = virHashLookup(priv->configCache, oldfilename))) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("can't retrieve config entry for domain to overwrite"));
goto error;
}
/* Remove the name -> filename mapping */
if (virHashRemoveEntry(priv->nameConfigMap, def->name, NULL) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("failed to remove old domain from config map"));
goto error;
}
/* Remove the config record itself */
if (virHashRemoveEntry(priv->configCache, oldfilename, xenXMConfigFree) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("failed to remove old domain from config map"));
goto error;
}
entry = NULL;
}
if ((strlen(priv->configDir) + 1 + strlen(def->name) + 1) > PATH_MAX) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("config file name is too long"));
goto error;
}
strcpy(filename, priv->configDir);
strcat(filename, "/");
strcat(filename, def->name);
if (xenXMConfigSaveFile(conn, filename, def) < 0)
goto error;
if (VIR_ALLOC(entry) < 0) {
virReportOOMError();
goto error;
}
if ((entry->refreshedAt = time(NULL)) == ((time_t)-1)) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("unable to get current time"));
goto error;
}
memmove(entry->filename, filename, PATH_MAX);
entry->def = def;
if (virHashAddEntry(priv->configCache, filename, entry) < 0) {
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("unable to store config file handle"));
goto error;
}
if (virHashAddEntry(priv->nameConfigMap, def->name, entry->filename) < 0) {
virHashRemoveEntry(priv->configCache, filename, NULL);
xenXMError(VIR_ERR_INTERNAL_ERROR,
"%s", _("unable to store config file handle"));
goto error;
}
ret = virGetDomain(conn, def->name, def->uuid);
xenUnifiedUnlock(priv);
return (ret);
error:
VIR_FREE(entry);
virDomainDefFree(def);
xenUnifiedUnlock(priv);
return (NULL);
}
/*
* Delete a domain from disk
*/
int xenXMDomainUndefine(virDomainPtr domain) {
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
int ret = -1;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return (-1);
}
if (domain->id != -1)
return (-1);
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
priv = domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
if (unlink(entry->filename) < 0)
goto cleanup;
/* Remove the name -> filename mapping */
if (virHashRemoveEntry(priv->nameConfigMap, domain->name, NULL) < 0)
goto cleanup;
/* Remove the config record itself */
if (virHashRemoveEntry(priv->configCache, entry->filename, xenXMConfigFree) < 0)
goto cleanup;
ret = 0;
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
struct xenXMListIteratorContext {
virConnectPtr conn;
int oom;
int max;
int count;
char ** names;
};
static void xenXMListIterator(void *payload ATTRIBUTE_UNUSED, const char *name, void *data) {
struct xenXMListIteratorContext *ctx = data;
virDomainPtr dom = NULL;
if (ctx->oom)
return;
if (ctx->count == ctx->max)
return;
dom = xenDaemonLookupByName(ctx->conn, name);
if (!dom) {
if (!(ctx->names[ctx->count] = strdup(name)))
ctx->oom = 1;
else
ctx->count++;
} else {
virDomainFree(dom);
}
}
/*
* List all defined domains, filtered to remove any which
* are currently running
*/
int xenXMListDefinedDomains(virConnectPtr conn, char **const names, int maxnames) {
xenUnifiedPrivatePtr priv;
struct xenXMListIteratorContext ctx;
int i, ret = -1;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__);
return (-1);
}
priv = conn->privateData;
xenUnifiedLock(priv);
if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0)
goto cleanup;
if (maxnames > virHashSize(priv->configCache))
maxnames = virHashSize(priv->configCache);
ctx.conn = conn;
ctx.oom = 0;
ctx.count = 0;
ctx.max = maxnames;
ctx.names = names;
virHashForEach(priv->nameConfigMap, xenXMListIterator, &ctx);
if (ctx.oom) {
for (i = 0; i < ctx.count; i++)
VIR_FREE(ctx.names[i]);
virReportOOMError();
goto cleanup;
}
ret = ctx.count;
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/*
* Return the maximum number of defined domains - not filtered
* based on number running
*/
int xenXMNumOfDefinedDomains(virConnectPtr conn) {
xenUnifiedPrivatePtr priv;
int ret = -1;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__);
return (-1);
}
priv = conn->privateData;
xenUnifiedLock(priv);
if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0)
goto cleanup;
ret = virHashSize(priv->nameConfigMap);
cleanup:
xenUnifiedUnlock(priv);
return ret;
}
/**
* xenXMDomainAttachDeviceFlags:
* @domain: pointer to domain object
* @xml: pointer to XML description of device
* @flags: an OR'ed set of virDomainDeviceModifyFlags
*
* Create a virtual device attachment to backend.
* XML description is translated into config file.
* This driver only supports device allocation to
* persisted config.
*
* Returns 0 in case of success, -1 in case of failure.
*/
static int
xenXMDomainAttachDeviceFlags(virDomainPtr domain, const char *xml,
unsigned int flags) {
const char *filename = NULL;
xenXMConfCachePtr entry = NULL;
int ret = -1;
virDomainDeviceDefPtr dev = NULL;
virDomainDefPtr def;
xenUnifiedPrivatePtr priv;
if ((!domain) || (!domain->conn) || (!domain->name) || (!xml)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO)
return -1;
if (domain->id != -1 && !(flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG))
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
def = entry->def;
if (!(dev = virDomainDeviceDefParse(priv->caps,
entry->def,
xml, VIR_DOMAIN_XML_INACTIVE)))
goto cleanup;
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
{
if (virDomainDiskInsert(def, dev->data.disk) < 0) {
virReportOOMError();
goto cleanup;
}
dev->data.disk = NULL;
}
break;
case VIR_DOMAIN_DEVICE_NET:
{
if (VIR_REALLOC_N(def->nets, def->nnets+1) < 0) {
virReportOOMError();
goto cleanup;
}
def->nets[def->nnets++] = dev->data.net;
dev->data.net = NULL;
break;
}
default:
xenXMError(VIR_ERR_XML_ERROR,
"%s", _("unknown device"));
goto cleanup;
}
/* If this fails, should we try to undo our changes to the
* in-memory representation of the config file. I say not!
*/
if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
goto cleanup;
ret = 0;
cleanup:
virDomainDeviceDefFree(dev);
xenUnifiedUnlock(priv);
return ret;
}
/**
* xenXMDomainDetachDeviceFlags:
* @domain: pointer to domain object
* @xml: pointer to XML description of device
* @flags: an OR'ed set of virDomainDeviceModifyFlags
*
* Destroy a virtual device attachment to backend.
* This driver only supports device deallocation from
* persisted config.
*
* Returns 0 in case of success, -1 in case of failure.
*/
static int
xenXMDomainDetachDeviceFlags(virDomainPtr domain, const char *xml,
unsigned int flags) {
const char *filename = NULL;
xenXMConfCachePtr entry = NULL;
virDomainDeviceDefPtr dev = NULL;
virDomainDefPtr def;
int ret = -1;
int i;
xenUnifiedPrivatePtr priv;
if ((!domain) || (!domain->conn) || (!domain->name) || (!xml)) {
xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO)
return -1;
if (domain->id != -1 && !(flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG))
return -1;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
xenUnifiedLock(priv);
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
goto cleanup;
if (!(entry = virHashLookup(priv->configCache, filename)))
goto cleanup;
def = entry->def;
if (!(dev = virDomainDeviceDefParse(priv->caps,
entry->def,
xml, VIR_DOMAIN_XML_INACTIVE)))
goto cleanup;
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
{
for (i = 0 ; i < def->ndisks ; i++) {
if (def->disks[i]->dst &&
dev->data.disk->dst &&
STREQ(def->disks[i]->dst, dev->data.disk->dst)) {
virDomainDiskDefFree(def->disks[i]);
if (i < (def->ndisks - 1))
memmove(def->disks + i,
def->disks + i + 1,
sizeof(*def->disks) *
(def->ndisks - (i + 1)));
break;
}
}
break;
}
case VIR_DOMAIN_DEVICE_NET:
{
for (i = 0 ; i < def->nnets ; i++) {
if (!memcmp(def->nets[i]->mac,
dev->data.net->mac,
sizeof(def->nets[i]->mac))) {
virDomainNetDefFree(def->nets[i]);
if (i < (def->nnets - 1))
memmove(def->nets + i,
def->nets + i + 1,
sizeof(*def->nets) *
(def->nnets - (i + 1)));
break;
}
}
break;
}
default:
xenXMError(VIR_ERR_XML_ERROR,
"%s", _("unknown device"));
goto cleanup;
}
/* If this fails, should we try to undo our changes to the
* in-memory representation of the config file. I say not!
*/
if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
goto cleanup;
ret = 0;
cleanup:
virDomainDeviceDefFree(dev);
xenUnifiedUnlock(priv);
return (ret);
}
int
xenXMDomainBlockPeek (virDomainPtr dom ATTRIBUTE_UNUSED,
const char *path ATTRIBUTE_UNUSED,
unsigned long long offset ATTRIBUTE_UNUSED,
size_t size ATTRIBUTE_UNUSED,
void *buffer ATTRIBUTE_UNUSED)
{
xenXMError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
static char *xenXMAutostartLinkName(virDomainPtr dom)
{
char *ret;
if (virAsprintf(&ret, "/etc/xen/auto/%s", dom->name) < 0)
return NULL;
return ret;
}
static char *xenXMDomainConfigName(virDomainPtr dom)
{
char *ret;
if (virAsprintf(&ret, "/etc/xen/%s", dom->name) < 0)
return NULL;
return ret;
}
int xenXMDomainGetAutostart(virDomainPtr dom, int *autostart)
{
char *linkname = xenXMAutostartLinkName(dom);
char *config = xenXMDomainConfigName(dom);
int ret = -1;
if (!linkname || !config) {
virReportOOMError();
goto cleanup;
}
*autostart = virFileLinkPointsTo(linkname, config);
if (*autostart < 0) {
virReportSystemError(errno,
_("cannot check link %s points to config %s"),
linkname, config);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(linkname);
VIR_FREE(config);
return ret;
}
int xenXMDomainSetAutostart(virDomainPtr dom, int autostart)
{
char *linkname = xenXMAutostartLinkName(dom);
char *config = xenXMDomainConfigName(dom);
int ret = -1;
if (!linkname || !config) {
virReportOOMError();
goto cleanup;
}
if (autostart) {
if (symlink(config, linkname) < 0 &&
errno != EEXIST) {
virReportSystemError(errno,
_("failed to create link %s to %s"),
config, linkname);
goto cleanup;
}
} else {
if (unlink(linkname) < 0 &&
errno != ENOENT) {
virReportSystemError(errno,
_("failed to remove link %s"),
linkname);
goto cleanup;
}
}
ret = 0;
cleanup:
VIR_FREE(linkname);
VIR_FREE(config);
return ret;
}
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