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libvirt/src/xm_internal.c

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/*
* xm_internal.h: helper routines for dealing with inactive domains
*
* Copyright (C) 2006-2007 Red Hat
* 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_unified.h"
#include "xend_internal.h"
#include "hash.h"
#include "buf.h"
#include "uuid.h"
#include "util.h"
#include "memory.h"
/* 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);
typedef struct xenXMConfCache *xenXMConfCachePtr;
typedef struct xenXMConfCache {
time_t refreshedAt;
char filename[PATH_MAX];
virDomainDefPtr def;
} xenXMConfCache;
static char configDir[PATH_MAX];
/* Config file name to config object */
static virHashTablePtr configCache = NULL;
/* Name to config file name */
static virHashTablePtr nameConfigMap = NULL;
static int nconnections = 0;
static time_t lastRefresh = 0;
char * xenXMAutoAssignMac(void);
static int xenXMDomainAttachDevice(virDomainPtr domain, const char *xml);
static int xenXMDomainDetachDevice(virDomainPtr domain, const char *xml);
#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, /* URI */
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 */
xenXMDomainAttachDevice, /* domainAttachDevice */
xenXMDomainDetachDevice, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
#define xenXMError(conn, code, fmt...) \
virReportErrorHelper(conn, VIR_FROM_XENXM, code, __FILE__, \
__FUNCTION__, __LINE__, fmt)
int
xenXMInit (void)
{
char *envConfigDir;
int safeMode = 0;
/* Disable use of env variable if running setuid */
if ((geteuid() != getuid()) ||
(getegid() != getgid()))
safeMode = 1;
if (!safeMode &&
(envConfigDir = getenv("LIBVIRT_XM_CONFIG_DIR")) != NULL) {
strncpy(configDir, envConfigDir, PATH_MAX-1);
configDir[PATH_MAX-1] = '\0';
} else {
strcpy(configDir, XM_CONFIG_DIR);
}
return 0;
}
/* Convenience method to grab a int from the config file object */
static int xenXMConfigGetBool(virConnectPtr conn,
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) {
if (!val->str) {
*value = def;
}
*value = STREQ(val->str, "1") ? 1 : 0;
} else {
xenXMError(conn, 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(virConnectPtr conn,
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;
if (!val->str) {
*value = def;
}
*value = strtol(val->str, &ret, 10);
if (ret == val->str) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("config value %s was malformed"), name);
return -1;
}
} else {
xenXMError(conn, 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(virConnectPtr conn,
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(conn, 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(virConnectPtr conn,
virConfPtr conf,
const char *name,
char **value,
int allowMissing) {
virConfValuePtr val;
*value = NULL;
if (!(val = virConfGetValue(conf, name))) {
if (allowMissing)
return 0;
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("config value %s was missing"), name);
return -1;
}
if (val->type != VIR_CONF_STRING) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("config value %s was not a string"), name);
return -1;
}
if (!val->str) {
if (allowMissing)
return 0;
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("config value %s was missing"), name);
return -1;
}
if (!(*value = strdup(val->str))) {
xenXMError(conn, VIR_ERR_NO_MEMORY, NULL);
return -1;
}
return 0;
}
static int xenXMConfigCopyString(virConnectPtr conn,
virConfPtr conf,
const char *name,
char **value) {
return xenXMConfigCopyStringInternal(conn, conf, name, value, 0);
}
static int xenXMConfigCopyStringOpt(virConnectPtr conn,
virConfPtr conf,
const char *name,
char **value) {
return xenXMConfigCopyStringInternal(conn, 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);
}
/* Remove any configs which were not refreshed recently */
static int xenXMConfigReaper(const void *payload, const char *key ATTRIBUTE_UNUSED, const void *data) {
time_t now = *(const time_t *)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 != now) {
const char *olddomname = entry->def->name;
char *nameowner = (char *)virHashLookup(nameConfigMap, olddomname);
if (nameowner && STREQ(nameowner, key)) {
virHashRemoveEntry(nameConfigMap, olddomname, NULL);
}
return (1);
}
return (0);
}
static virDomainDefPtr
xenXMConfigReadFile(virConnectPtr conn, const char *filename) {
virConfPtr conf;
virDomainDefPtr def;
if (!(conf = virConfReadFile(filename)))
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;
}
/* 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 */
static int xenXMConfigCacheRefresh (virConnectPtr conn) {
DIR *dh;
struct dirent *ent;
time_t now = time(NULL);
int ret = -1;
if (now == ((time_t)-1)) {
xenXMError (conn, VIR_ERR_SYSTEM_ERROR, "%s", strerror(errno));
return (-1);
}
/* Rate limit re-scans */
if ((now - lastRefresh) < XM_REFRESH_INTERVAL)
return (0);
lastRefresh = now;
/* Process the files in the config dir */
if (!(dh = opendir(configDir))) {
xenXMError (conn, VIR_ERR_SYSTEM_ERROR, "%s", strerror(errno));
return (-1);
}
while ((ent = readdir(dh))) {
xenXMConfCachePtr entry;
struct stat st;
int newborn = 0;
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(configDir) + 1 + strlen(ent->d_name) + 1) > PATH_MAX)
continue;
strcpy(path, 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 ((entry = virHashLookup(configCache, path))) {
char *nameowner;
if (entry->refreshedAt >= st.st_mtime) {
entry->refreshedAt = now;
continue;
}
/* If we currently own the name, then release it and
re-acquire it later - just in case it was renamed */
nameowner = (char *)virHashLookup(nameConfigMap, entry->def->name);
if (nameowner && STREQ(nameowner, path)) {
virHashRemoveEntry(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) {
xenXMError (conn, VIR_ERR_NO_MEMORY, "%s", strerror(errno));
goto cleanup;
}
memcpy(entry->filename, path, PATH_MAX);
}
entry->refreshedAt = now;
if (!(entry->def = xenXMConfigReadFile(conn, entry->filename))) {
if (!newborn)
virHashRemoveEntry(configCache, path, NULL);
VIR_FREE(entry);
continue;
}
/* If its a completely new entry, it must be stuck into
the cache (refresh'd entries are already registered) */
if (newborn) {
if (virHashAddEntry(configCache, entry->filename, entry) < 0) {
virDomainDefFree(entry->def);
VIR_FREE(entry);
xenXMError (conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("xenXMConfigCacheRefresh: virHashAddEntry"));
goto cleanup;
}
}
/* See if we need to map this config file in as the primary owner
* of the domain in question
*/
if (!virHashLookup(nameConfigMap, entry->def->name)) {
if (virHashAddEntry(nameConfigMap, entry->def->name, entry->filename) < 0) {
virHashRemoveEntry(configCache, ent->d_name, NULL);
virDomainDefFree(entry->def);
VIR_FREE(entry);
}
}
}
/* 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 */
virHashRemoveSet(configCache, xenXMConfigReaper, xenXMConfigFree, (const void*) &now);
ret = 0;
cleanup:
if (dh)
closedir(dh);
return (ret);
}
/*
* Open a 'connection' to the config file directory ;-)
* We just create a hash table to store config files in.
* We only support a single directory, so repeated calls
* to open all end up using the same cache of files
*/
int
xenXMOpen (virConnectPtr conn ATTRIBUTE_UNUSED,
xmlURIPtr uri ATTRIBUTE_UNUSED,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED)
{
if (configCache == NULL) {
configCache = virHashCreate(50);
if (!configCache)
return (-1);
nameConfigMap = virHashCreate(50);
if (!nameConfigMap) {
virHashFree(configCache, NULL);
configCache = NULL;
return (-1);
}
/* Force the cache to be reloaded next time that
* xenXMConfigCacheRefresh is called.
*/
lastRefresh = 0;
}
nconnections++;
return (0);
}
/*
* Free the config files in the cache if this is the
* last connection
*/
int xenXMClose(virConnectPtr conn ATTRIBUTE_UNUSED) {
nconnections--;
if (nconnections <= 0) {
virHashFree(nameConfigMap, NULL);
nameConfigMap = NULL;
virHashFree(configCache, xenXMConfigFree);
configCache = NULL;
}
return (0);
}
/*
* Since these are all offline domains, we only return info about
* VCPUs and memory.
*/
int xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return(-1);
}
if (domain->id != -1)
return (-1);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
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;
return (0);
}
#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;
int i;
const char *defaultArch, *defaultMachine;
if (VIR_ALLOC(def) < 0)
return NULL;
def->virtType = VIR_DOMAIN_VIRT_XEN;
def->id = -1;
if (xenXMConfigCopyString(conn, conf, "name", &def->name) < 0)
goto cleanup;
if (xenXMConfigGetUUID(conf, "uuid", def->uuid) < 0)
goto cleanup;
if ((xenXMConfigGetString(conn, 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);
if (defaultArch == NULL) {
xenXMError(conn, 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);
if (defaultMachine != NULL) {
if (!(def->os.machine = strdup(defaultMachine)))
goto no_memory;
}
if (hvm) {
const char *boot;
if (xenXMConfigCopyString(conn, conf, "kernel", &def->os.loader) < 0)
goto cleanup;
if (xenXMConfigGetString(conn, 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(conn, conf, "bootloader", &def->os.bootloader) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "bootargs", &def->os.bootloaderArgs) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "kernel", &def->os.kernel) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "ramdisk", &def->os.initrd) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "extra", &def->os.cmdline) < 0)
goto cleanup;
}
if (xenXMConfigGetULong(conn, conf, "memory", &def->memory, MIN_XEN_GUEST_SIZE * 2) < 0)
goto cleanup;
if (xenXMConfigGetULong(conn, conf, "maxmem", &def->maxmem, def->memory) < 0)
goto cleanup;
def->memory *= 1024;
def->maxmem *= 1024;
if (xenXMConfigGetULong(conn, conf, "vcpus", &def->vcpus, 1) < 0)
goto cleanup;
if (xenXMConfigGetString(conn, 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(conn, &str, 0,
def->cpumask, def->cpumasklen) < 0)
goto cleanup;
}
if (xenXMConfigGetString(conn, conf, "on_poweroff", &str, "destroy") < 0)
goto cleanup;
if ((def->onPoweroff = virDomainLifecycleTypeFromString(str)) < 0) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("unexpected value %s for on_poweroff"), str);
goto cleanup;
}
if (xenXMConfigGetString(conn, conf, "on_reboot", &str, "restart") < 0)
goto cleanup;
if ((def->onReboot = virDomainLifecycleTypeFromString(str)) < 0) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("unexpected value %s for on_reboot"), str);
goto cleanup;
}
if (xenXMConfigGetString(conn, conf, "on_crash", &str, "restart") < 0)
goto cleanup;
if ((def->onCrash = virDomainLifecycleTypeFromString(str)) < 0) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("unexpected value %s for on_crash"), str);
goto cleanup;
}
if (hvm) {
if (xenXMConfigGetBool(conn, conf, "pae", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_PAE);
if (xenXMConfigGetBool(conn, conf, "acpi", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_ACPI);
if (xenXMConfigGetBool(conn, conf, "apic", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_APIC);
if (xenXMConfigGetBool(conn, conf, "localtime", &def->localtime, 0) < 0)
goto cleanup;
}
if (xenXMConfigCopyStringOpt(conn, 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, *tmp1;
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, ',')) || offset[0] == '\0')
goto skipdisk;
if ((offset - head) >= (PATH_MAX-1))
goto skipdisk;
if (VIR_ALLOC_N(disk->src, (offset - head) + 1) < 0)
goto no_memory;
strncpy(disk->src, head, (offset - head));
disk->src[(offset-head)] = '\0';
head = offset + 1;
/* Remove legacy ioemu: junk */
if (STRPREFIX(head, "ioemu:"))
head = head + 6;
/* Extract the dest device name */
if (!(offset = strchr(head, ',')) || offset[0] == '\0')
goto skipdisk;
if (VIR_ALLOC_N(disk->dst, (offset - head) + 1) < 0)
goto no_memory;
strncpy(disk->dst, head, (offset - head));
disk->dst[(offset-head)] = '\0';
head = offset + 1;
/* Extract source driver type */
if (disk->src &&
(tmp = strchr(disk->src, ':')) != NULL) {
if (VIR_ALLOC_N(disk->driverName, (tmp - disk->src) + 1) < 0)
goto no_memory;
strncpy(disk->driverName, disk->src, (tmp - disk->src));
disk->driverName[tmp - disk->src] = '\0';
} else {
if (!(disk->driverName = strdup("phy")))
goto no_memory;
tmp = disk->src;
}
/* And the source driver sub-type */
if (STRPREFIX(disk->driverName, "tap")) {
if (!(tmp1 = strchr(tmp+1, ':')) || !tmp1[0])
goto skipdisk;
if (VIR_ALLOC_N(disk->driverType, (tmp1-(tmp+1))) < 0)
goto no_memory;
strncpy(disk->driverType, tmp+1, (tmp1-(tmp+1)));
memmove(disk->src, disk->src+(tmp1-disk->src)+1, strlen(disk->src)-(tmp1-disk->src));
} else {
disk->driverType = NULL;
if (disk->src[0] && tmp)
memmove(disk->src, disk->src+(tmp-disk->src)+1, strlen(disk->src)-(tmp-disk->src));
}
/* 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(conn, 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;
}
}
qsort(def->disks, def->ndisks, sizeof(*def->disks),
virDomainDiskQSort);
list = virConfGetValue(conf, "vif");
if (list && list->type == VIR_CONF_LIST) {
list = list->list;
while (list) {
int type = -1;
char script[PATH_MAX];
char model[10];
char ip[16];
char mac[18];
char bridge[50];
char *key;
bridge[0] = '\0';
mac[0] = '\0';
script[0] = '\0';
ip[0] = '\0';
model[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, '=')) || (data[0] == '\0'))
goto skipnic;
data++;
if (STRPREFIX(key, "mac=")) {
int len = nextkey ? (nextkey - data) : 17;
if (len > 17)
len = 17;
strncpy(mac, data, len);
mac[len] = '\0';
} else if (STRPREFIX(key, "bridge=")) {
int len = nextkey ? (nextkey - data) : sizeof(bridge)-1;
type = 1;
if (len > (sizeof(bridge)-1))
len = sizeof(bridge)-1;
strncpy(bridge, data, len);
bridge[len] = '\0';
} else if (STRPREFIX(key, "script=")) {
int len = nextkey ? (nextkey - data) : PATH_MAX-1;
if (len > (PATH_MAX-1))
len = PATH_MAX-1;
strncpy(script, data, len);
script[len] = '\0';
} else if (STRPREFIX(key, "model=")) {
int len = nextkey ? (nextkey - data) : sizeof(model)-1;
if (len > (sizeof(model)-1))
len = sizeof(model)-1;
strncpy(model, data, len);
model[len] = '\0';
} else if (STRPREFIX(key, "ip=")) {
int len = nextkey ? (nextkey - data) : 15;
if (len > 15)
len = 15;
strncpy(ip, data, len);
ip[len] = '\0';
}
while (nextkey && (nextkey[0] == ',' ||
nextkey[0] == ' ' ||
nextkey[0] == '\t'))
nextkey++;
key = nextkey;
}
/* XXX Forcing to pretend its a bridge */
if (type == -1) {
type = 1;
}
if (VIR_ALLOC(net) < 0)
goto cleanup;
if (mac[0]) {
unsigned int rawmac[6];
sscanf(mac, "%02x:%02x:%02x:%02x:%02x:%02x",
(unsigned int*)&rawmac[0],
(unsigned int*)&rawmac[1],
(unsigned int*)&rawmac[2],
(unsigned int*)&rawmac[3],
(unsigned int*)&rawmac[4],
(unsigned int*)&rawmac[5]);
net->mac[0] = rawmac[0];
net->mac[1] = rawmac[1];
net->mac[2] = rawmac[2];
net->mac[3] = rawmac[3];
net->mac[4] = rawmac[4];
net->mac[5] = rawmac[5];
}
if (bridge[0] || STREQ(script, "vif-bridge"))
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;
} 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 (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);
}
}
if (hvm) {
if (xenXMConfigGetString(conn, 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(conn, 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(conn, conf, "vncunused", &val, 1) < 0)
goto cleanup;
graphics->data.vnc.autoport = val ? 1 : 0;
if (!graphics->data.vnc.autoport) {
unsigned long vncdisplay;
if (xenXMConfigGetULong(conn, conf, "vncdisplay", &vncdisplay, 0) < 0)
goto cleanup;
graphics->data.vnc.port = (int)vncdisplay + 5900;
}
if (xenXMConfigCopyStringOpt(conn, conf, "vnclisten", &graphics->data.vnc.listenAddr) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "vncpasswd", &graphics->data.vnc.passwd) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "keymap", &graphics->data.vnc.keymap) < 0)
goto cleanup;
def->graphics = graphics;
graphics = NULL;
} else {
if (xenXMConfigGetBool(conn, 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(conn, conf, "display", &graphics->data.sdl.display) < 0)
goto cleanup;
if (xenXMConfigCopyStringOpt(conn, conf, "xauthority", &graphics->data.sdl.xauth) < 0)
goto cleanup;
def->graphics = graphics;
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;
strncpy(vfb, list->list->str, MAX_VFB-1);
vfb[MAX_VFB-1] = '\0';
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 *data;
char *nextkey = strchr(key, ',');
char *end = nextkey;
if (nextkey) {
*end = '\0';
nextkey++;
}
if (!(data = strchr(key, '=')) || (data[0] == '\0'))
break;
data++;
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;
}
def->graphics = graphics;
graphics = NULL;
}
}
if (hvm) {
virDomainChrDefPtr chr = NULL;
if (xenXMConfigGetString(conn, conf, "parallel", &str, NULL) < 0)
goto cleanup;
if (str && STRNEQ(str, "none") &&
!(chr = xenDaemonParseSxprChar(conn, str, NULL)))
goto cleanup;
if (chr) {
if (VIR_ALLOC_N(def->parallels, 1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
def->parallels[0] = chr;
def->nparallels++;
chr = NULL;
}
if (xenXMConfigGetString(conn, conf, "serial", &str, NULL) < 0)
goto cleanup;
if (str && STRNEQ(str, "none") &&
!(chr = xenDaemonParseSxprChar(conn, str, NULL)))
goto cleanup;
if (chr) {
if (VIR_ALLOC_N(def->serials, 1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
def->serials[0] = chr;
def->nserials++;
}
} else {
if (!(def->console = xenDaemonParseSxprChar(conn, "pty", NULL)))
goto cleanup;
}
if (hvm) {
if (xenXMConfigGetString(conn, conf, "soundhw", &str, NULL) < 0)
goto cleanup;
if (str &&
xenDaemonParseSxprSound(conn, def, str) < 0)
goto cleanup;
}
return def;
no_memory:
xenXMError(conn, VIR_ERR_NO_MEMORY, NULL);
/* 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) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return(NULL);
}
if (domain->id != -1)
return (NULL);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (NULL);
if (!(entry = virHashLookup(configCache, filename)))
return (NULL);
return virDomainDefFormat(domain->conn, entry->def, flags);
}
/*
* Update amount of memory in the config file
*/
int xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), 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);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
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)
return (-1);
return (0);
}
/*
* Update maximum memory limit in config
*/
int xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return (-1);
}
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
if (domain->id != -1)
return (-1);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
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)
return (-1);
return (0);
}
/*
* Get max memory limit from config
*/
unsigned long xenXMDomainGetMaxMemory(virDomainPtr domain) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return (-1);
}
if (domain->id != -1)
return (-1);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
return entry->def->maxmem;
}
/*
* Set the VCPU count in config
*/
int xenXMDomainSetVcpus(virDomainPtr domain, unsigned int vcpus) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return (-1);
}
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
if (domain->id != -1)
return (-1);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
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)
return (-1);
return (0);
}
/**
* 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)
{
const char *filename;
xenXMConfCachePtr entry;
virBuffer mapbuf = VIR_BUFFER_INITIALIZER;
char *mapstr = 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(domain ? domain->conn : NULL, VIR_ERR_INVALID_ARG,
__FUNCTION__);
return -1;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
xenXMError (domain->conn, VIR_ERR_INVALID_ARG,
"%s", _("read only connection"));
return -1;
}
if (domain->id != -1) {
xenXMError (domain->conn, VIR_ERR_INVALID_ARG,
"%s", _("not inactive domain"));
return -1;
}
if (!(filename = virHashLookup(nameConfigMap, domain->name))) {
xenXMError (domain->conn, VIR_ERR_INTERNAL_ERROR, "%s", _("virHashLookup"));
return -1;
}
if (!(entry = virHashLookup(configCache, filename))) {
xenXMError (domain->conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("can't retrieve config file for domain"));
return -1;
}
/* 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)) {
xenXMError(domain->conn, VIR_ERR_NO_MEMORY, "%s", _("allocate buffer"));
return -1;
}
mapstr = virBufferContentAndReset(&mapbuf);
if (VIR_ALLOC_N(cpuset, maxcpu) < 0) {
xenXMError(domain->conn, VIR_ERR_NO_MEMORY, "%s", _("allocate buffer"));
goto cleanup;
}
if (virDomainCpuSetParse(domain->conn,
(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(mapstr);
VIR_FREE(cpuset);
return (ret);
}
/*
* Find an inactive domain based on its name
*/
virDomainPtr xenXMDomainLookupByName(virConnectPtr conn, const char *domname) {
const char *filename;
xenXMConfCachePtr entry;
virDomainPtr ret;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return (NULL);
}
if (domname == NULL) {
xenXMError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
return (NULL);
}
if (xenXMConfigCacheRefresh (conn) < 0)
return (NULL);
if (!(filename = virHashLookup(nameConfigMap, domname)))
return (NULL);
if (!(entry = virHashLookup(configCache, filename))) {
return (NULL);
}
if (!(ret = virGetDomain(conn, domname, entry->def->uuid))) {
return (NULL);
}
/* Ensure its marked inactive, because may be cached
handle to a previously active domain */
ret->id = -1;
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) {
xenXMConfCachePtr entry;
virDomainPtr ret;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return (NULL);
}
if (uuid == NULL) {
xenXMError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
return (NULL);
}
if (xenXMConfigCacheRefresh (conn) < 0)
return (NULL);
if (!(entry = virHashSearch(configCache, xenXMDomainSearchForUUID, (const void *)uuid))) {
return (NULL);
}
if (!(ret = virGetDomain(conn, entry->def->name, uuid))) {
return (NULL);
}
/* Ensure its marked inactive, because may be cached
handle to a previously active domain */
ret->id = -1;
return (ret);
}
/*
* Start a domain from an existing defined config file
*/
int xenXMDomainCreate(virDomainPtr domain) {
char *sexpr;
int ret;
xenUnifiedPrivatePtr priv;
const char *filename;
xenXMConfCachePtr entry;
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (domain->id != -1)
return (-1);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
if (!(sexpr = xenDaemonFormatSxpr(domain->conn, entry->def, priv->xendConfigVersion))) {
xenXMError(domain->conn, VIR_ERR_XML_ERROR,
"%s", _("failed to build sexpr"));
return (-1);
}
ret = xenDaemonDomainCreateXML(domain->conn, sexpr);
VIR_FREE(sexpr);
if (ret != 0) {
return (-1);
}
if ((ret = xenDaemonDomainLookupByName_ids(domain->conn, domain->name,
entry->def->uuid)) < 0) {
return (-1);
}
domain->id = ret;
if ((ret = xend_wait_for_devices(domain->conn, domain->name)) < 0)
goto cleanup;
if ((ret = xenDaemonDomainResume(domain)) < 0)
goto cleanup;
return (0);
cleanup:
if (domain->id != -1) {
xenDaemonDomainDestroy(domain);
domain->id = -1;
}
return (-1);
}
static
int xenXMConfigSetInt(virConfPtr conf, const char *setting, long l) {
virConfValuePtr value = NULL;
if (VIR_ALLOC(value) < 0)
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)
return -1;
value->type = VIR_CONF_STRING;
value->next = NULL;
if (!(value->str = strdup(str))) {
VIR_FREE(value);
return -1;
}
return virConfSetValue(conf, setting, value);
}
static int xenXMDomainConfigFormatDisk(virConnectPtr conn,
virConfValuePtr list,
virDomainDiskDefPtr disk,
int hvm,
int xendConfigVersion)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virConfValuePtr val, tmp;
char *str;
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 {
virBufferVSprintf(&buf, "%s:",
disk->type == VIR_DOMAIN_DISK_TYPE_FILE ?
"file" : "phy");
}
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)) {
xenXMError(conn, VIR_ERR_NO_MEMORY, NULL);
return -1;
}
if (VIR_ALLOC(val) < 0) {
xenXMError(conn, VIR_ERR_NO_MEMORY, NULL);
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:
str = virBufferContentAndReset(&buf);
VIR_FREE(str);
return -1;
}
static int xenXMDomainConfigFormatNet(virConnectPtr conn,
virConfValuePtr list,
virDomainNetDefPtr net,
int hvm)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virConfValuePtr val, tmp;
char *str;
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);
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:
break;
default:
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
_("unsupported network type %d"),
net->type);
goto cleanup;
}
if (hvm)
virBufferAddLit(&buf, ",type=ioemu");
if (net->model)
virBufferVSprintf(&buf, ",model=%s",
net->model);
if (VIR_ALLOC(val) < 0) {
xenXMError(conn, VIR_ERR_NO_MEMORY, NULL);
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:
str = virBufferContentAndReset(&buf);
VIR_FREE(str);
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 &&
!(cpus = virDomainCpuSetFormat(conn, def->cpumask, def->cpumasklen)) < 0)
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 (xenXMConfigSetInt(conf, "localtime", def->localtime ? 1 : 0) < 0)
goto no_memory;
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(conn, 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(conn, 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(conn, 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->graphics) {
if (hvm || priv->xendConfigVersion < 3) {
if (def->graphics->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->data.sdl.display &&
xenXMConfigSetString(conf, "display",
def->graphics->data.sdl.display) < 0)
goto no_memory;
if (def->graphics->data.sdl.xauth &&
xenXMConfigSetString(conf, "xauthority",
def->graphics->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->data.vnc.autoport ? 1 : 0) < 0)
goto no_memory;
if (!def->graphics->data.vnc.autoport &&
xenXMConfigSetInt(conf, "vncdisplay",
def->graphics->data.vnc.port - 5900) < 0)
goto no_memory;
if (def->graphics->data.vnc.listenAddr &&
xenXMConfigSetString(conf, "vnclisten",
def->graphics->data.vnc.listenAddr) < 0)
goto no_memory;
if (def->graphics->data.vnc.passwd &&
xenXMConfigSetString(conf, "vncpasswd",
def->graphics->data.vnc.passwd) < 0)
goto no_memory;
if (def->graphics->data.vnc.keymap &&
xenXMConfigSetString(conf, "keymap",
def->graphics->data.vnc.keymap) < 0)
goto no_memory;
}
} else {
virConfValuePtr vfb, disp;
char *vfbstr = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (def->graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) {
virBufferAddLit(&buf, "type=sdl");
if (def->graphics->data.sdl.display)
virBufferVSprintf(&buf, ",display=%s",
def->graphics->data.sdl.display);
if (def->graphics->data.sdl.xauth)
virBufferVSprintf(&buf, ",xauthority=%s",
def->graphics->data.sdl.xauth);
} else {
virBufferAddLit(&buf, "type=vnc");
virBufferVSprintf(&buf, ",vncunused=%d",
def->graphics->data.vnc.autoport ? 1 : 0);
if (!def->graphics->data.vnc.autoport)
virBufferVSprintf(&buf, ",vncdisplay=%d",
def->graphics->data.vnc.port - 5900);
if (def->graphics->data.vnc.listenAddr)
virBufferVSprintf(&buf, ",vnclisten=%s",
def->graphics->data.vnc.listenAddr);
if (def->graphics->data.vnc.passwd)
virBufferVSprintf(&buf, ",vncpasswd=%s",
def->graphics->data.vnc.passwd);
if (def->graphics->data.vnc.keymap)
virBufferVSprintf(&buf, ",keymap=%s",
def->graphics->data.vnc.keymap);
}
if (virBufferError(&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(conn, diskVal, def->disks[i],
hvm, priv->xendConfigVersion) < 0)
goto cleanup;
}
if (diskVal->list == NULL)
VIR_FREE(diskVal);
else if (virConfSetValue(conf, "disk", diskVal) < 0) {
diskVal = NULL;
goto no_memory;
}
diskVal = NULL;
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)
VIR_FREE(netVal);
else if (virConfSetValue(conf, "vif", netVal) < 0) {
netVal = NULL;
goto no_memory;
}
netVal = NULL;
if (hvm) {
if (def->nparallels) {
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *str;
int ret;
ret = xenDaemonFormatSxprChr(conn, 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(conn, 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(conn,
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:
xenXMError(conn, VIR_ERR_NO_MEMORY, NULL);
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;
virDomainPtr olddomain;
char filename[PATH_MAX];
const char * oldfilename;
virDomainDefPtr def = NULL;
xenXMConfCachePtr entry = NULL;
xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return (NULL);
}
if (xml == NULL) {
xenXMError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
return (NULL);
}
if (conn->flags & VIR_CONNECT_RO)
return (NULL);
if (xenXMConfigCacheRefresh (conn) < 0)
return (NULL);
if (!(def = virDomainDefParseString(conn, priv->caps, xml)))
return (NULL);
if (virHashLookup(nameConfigMap, def->name)) {
/* domain exists, we will overwrite it */
if (!(oldfilename = (char *)virHashLookup(nameConfigMap, def->name))) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("can't retrieve config filename for domain to overwrite"));
goto error;
}
if (!(entry = virHashLookup(configCache, oldfilename))) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("can't retrieve config entry for domain to overwrite"));
goto error;
}
/* XXX wtf.com is this line for - it appears to be amemory leak */
if (!(olddomain = virGetDomain(conn, def->name, entry->def->uuid)))
goto error;
/* Remove the name -> filename mapping */
if (virHashRemoveEntry(nameConfigMap, def->name, NULL) < 0) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("failed to remove old domain from config map"));
goto error;
}
/* Remove the config record itself */
if (virHashRemoveEntry(configCache, oldfilename, xenXMConfigFree) < 0) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("failed to remove old domain from config map"));
goto error;
}
entry = NULL;
}
if ((strlen(configDir) + 1 + strlen(def->name) + 1) > PATH_MAX) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("config file name is too long"));
goto error;
}
strcpy(filename, configDir);
strcat(filename, "/");
strcat(filename, def->name);
if (xenXMConfigSaveFile(conn, filename, def) < 0)
goto error;
if (VIR_ALLOC(entry) < 0) {
xenXMError(conn, VIR_ERR_NO_MEMORY, "%s", _("config"));
goto error;
}
if ((entry->refreshedAt = time(NULL)) == ((time_t)-1)) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("unable to get current time"));
goto error;
}
memmove(entry->filename, filename, PATH_MAX);
entry->def = def;
if (virHashAddEntry(configCache, filename, entry) < 0) {
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("unable to store config file handle"));
goto error;
}
if (virHashAddEntry(nameConfigMap, def->name, entry->filename) < 0) {
virHashRemoveEntry(configCache, filename, NULL);
xenXMError(conn, VIR_ERR_INTERNAL_ERROR,
"%s", _("unable to store config file handle"));
goto error;
}
if (!(ret = virGetDomain(conn, def->name, def->uuid)))
return NULL;
ret->id = -1;
return (ret);
error:
VIR_FREE(entry);
virDomainDefFree(def);
return (NULL);
}
/*
* Delete a domain from disk
*/
int xenXMDomainUndefine(virDomainPtr domain) {
const char *filename;
xenXMConfCachePtr entry;
if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) {
xenXMError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return (-1);
}
if (domain->id != -1)
return (-1);
if (domain->conn->flags & VIR_CONNECT_RO)
return (-1);
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return (-1);
if (!(entry = virHashLookup(configCache, filename)))
return (-1);
if (unlink(entry->filename) < 0)
return (-1);
/* Remove the name -> filename mapping */
if (virHashRemoveEntry(nameConfigMap, domain->name, NULL) < 0)
return(-1);
/* Remove the config record itself */
if (virHashRemoveEntry(configCache, entry->filename, xenXMConfigFree) < 0)
return (-1);
return (0);
}
struct xenXMListIteratorContext {
virConnectPtr conn;
int max;
int count;
char ** names;
};
static void xenXMListIterator(const void *payload ATTRIBUTE_UNUSED, const char *name, const void *data) {
struct xenXMListIteratorContext *ctx = (struct xenXMListIteratorContext *)data;
virDomainPtr dom = NULL;
if (ctx->count == ctx->max)
return;
dom = xenDaemonLookupByName(ctx->conn, name);
if (!dom) {
ctx->names[ctx->count] = strdup(name);
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) {
struct xenXMListIteratorContext ctx;
if (!VIR_IS_CONNECT(conn)) {
xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return (-1);
}
if (xenXMConfigCacheRefresh (conn) < 0)
return (-1);
if (maxnames > virHashSize(configCache))
maxnames = virHashSize(configCache);
ctx.conn = conn;
ctx.count = 0;
ctx.max = maxnames;
ctx.names = names;
virHashForEach(nameConfigMap, xenXMListIterator, &ctx);
return (ctx.count);
}
/*
* Return the maximum number of defined domains - not filtered
* based on number running
*/
int xenXMNumOfDefinedDomains(virConnectPtr conn) {
if (!VIR_IS_CONNECT(conn)) {
xenXMError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return (-1);
}
if (xenXMConfigCacheRefresh (conn) < 0)
return (-1);
return virHashSize(nameConfigMap);
}
/**
* xenXMDomainAttachDevice:
* @domain: pointer to domain object
* @xml: pointer to XML description of device
*
* Create a virtual device attachment to backend.
* XML description is translated into config file.
*
* Returns 0 in case of success, -1 in case of failure.
*/
static int
xenXMDomainAttachDevice(virDomainPtr domain, const char *xml) {
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((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return -1;
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (domain->conn->flags & VIR_CONNECT_RO)
return -1;
if (domain->id != -1)
return -1;
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return -1;
if (!(entry = virHashLookup(configCache, filename)))
return -1;
def = entry->def;
if (!(dev = virDomainDeviceDefParse(domain->conn,
priv->caps,
entry->def,
xml)))
return -1;
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
{
if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0) {
xenXMError(domain->conn, VIR_ERR_NO_MEMORY, NULL);
goto cleanup;
}
def->disks[def->ndisks++] = dev->data.disk;
dev->data.disk = NULL;
qsort(def->disks, def->ndisks, sizeof(*def->disks),
virDomainDiskQSort);
}
break;
case VIR_DOMAIN_DEVICE_NET:
{
if (VIR_REALLOC_N(def->nets, def->nnets+1) < 0) {
xenXMError(domain->conn, VIR_ERR_NO_MEMORY, NULL);
goto cleanup;
}
def->nets[def->nnets++] = dev->data.net;
dev->data.net = NULL;
break;
}
default:
xenXMError(domain->conn, 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);
return ret;
}
/**
* xenXMDomainDetachDevice:
* @domain: pointer to domain object
* @xml: pointer to XML description of device
*
* Destroy a virtual device attachment to backend.
*
* Returns 0 in case of success, -1 in case of failure.
*/
static int
xenXMDomainDetachDevice(virDomainPtr domain, const char *xml) {
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((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG,
__FUNCTION__);
return -1;
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (domain->conn->flags & VIR_CONNECT_RO)
return -1;
if (domain->id != -1)
return -1;
if (!(filename = virHashLookup(nameConfigMap, domain->name)))
return -1;
if (!(entry = virHashLookup(configCache, filename)))
return -1;
def = entry->def;
if (!(dev = virDomainDeviceDefParse(domain->conn,
priv->caps,
entry->def,
xml)))
return -1;
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,
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,
def->nnets - (i + 1));
break;
}
}
break;
}
default:
xenXMError(domain->conn, 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);
return (ret);
}
int
xenXMDomainBlockPeek (virDomainPtr dom,
const char *path ATTRIBUTE_UNUSED,
unsigned long long offset ATTRIBUTE_UNUSED,
size_t size ATTRIBUTE_UNUSED,
void *buffer ATTRIBUTE_UNUSED)
{
xenXMError (dom->conn, VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
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