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libvirt/src/openvz/openvz_driver.c
Cole Robinson 6094ad7bd7 Promote virEvent*Handle/Timeout to public API 
Since we virEventRegisterDefaultImpl is now a public API, callers need
a way to invoke the default registered Handle and Timeout functions. We
already have general functions for these internally, so promote
them to the public API.

v2:
    Actually add APIs to libvirt.h
2011-06-21 10:08:47 -04:00

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/*
* openvz_driver.c: core driver methods for managing OpenVZ VEs
*
* Copyright (C) 2010-2011 Red Hat, Inc.
* Copyright (C) 2006, 2007 Binary Karma
* Copyright (C) 2006 Shuveb Hussain
* Copyright (C) 2007 Anoop Joe Cyriac
*
* 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
*
* Authors:
* Shuveb Hussain <shuveb@binarykarma.com>
* Anoop Joe Cyriac <anoop@binarykarma.com>
*
*/
#include <config.h>
#include <sys/types.h>
#include <sys/poll.h>
#include <dirent.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <sys/wait.h>
#include "virterror_internal.h"
#include "datatypes.h"
#include "openvz_driver.h"
#include "buf.h"
#include "util.h"
#include "openvz_conf.h"
#include "nodeinfo.h"
#include "memory.h"
#include "bridge.h"
#include "files.h"
#include "logging.h"
#include "command.h"
#define VIR_FROM_THIS VIR_FROM_OPENVZ
#define OPENVZ_MAX_ARG 28
#define CMDBUF_LEN 1488
#define CMDOP_LEN 288
static int openvzGetProcessInfo(unsigned long long *cpuTime, int vpsid);
static int openvzGetMaxVCPUs(virConnectPtr conn, const char *type);
static int openvzDomainGetMaxVcpus(virDomainPtr dom);
static int openvzDomainSetVcpusInternal(virDomainObjPtr vm,
unsigned int nvcpus);
static int openvzDomainSetMemoryInternal(virDomainObjPtr vm,
unsigned long memory);
static void openvzDriverLock(struct openvz_driver *driver)
{
virMutexLock(&driver->lock);
}
static void openvzDriverUnlock(struct openvz_driver *driver)
{
virMutexUnlock(&driver->lock);
}
struct openvz_driver ovz_driver;
static void cmdExecFree(const char *cmdExec[])
{
int i=-1;
while (cmdExec[++i]) {
VIR_FREE(cmdExec[i]);
}
}
/* generate arguments to create OpenVZ container
return -1 - error
0 - OK
*/
static int
openvzDomainDefineCmd(const char *args[],
int maxarg, virDomainDefPtr vmdef)
{
int narg;
for (narg = 0; narg < maxarg; narg++)
args[narg] = NULL;
if (vmdef == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Container is not defined"));
return -1;
}
#define ADD_ARG(thisarg) \
do { \
if (narg >= maxarg) \
goto no_memory; \
args[narg++] = thisarg; \
} while (0)
#define ADD_ARG_LIT(thisarg) \
do { \
if (narg >= maxarg) \
goto no_memory; \
if ((args[narg++] = strdup(thisarg)) == NULL) \
goto no_memory; \
} while (0)
narg = 0;
ADD_ARG_LIT(VZCTL);
ADD_ARG_LIT("--quiet");
ADD_ARG_LIT("create");
ADD_ARG_LIT(vmdef->name);
ADD_ARG_LIT("--name");
ADD_ARG_LIT(vmdef->name);
if (vmdef->nfss == 1 &&
vmdef->fss[0]->type == VIR_DOMAIN_FS_TYPE_TEMPLATE) {
ADD_ARG_LIT("--ostemplate");
ADD_ARG_LIT(vmdef->fss[0]->src);
}
#if 0
if ((vmdef->profile && *(vmdef->profile))) {
ADD_ARG_LIT("--config");
ADD_ARG_LIT(vmdef->profile);
}
#endif
ADD_ARG(NULL);
return 0;
no_memory:
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not put argument to %s"), VZCTL);
return -1;
#undef ADD_ARG
#undef ADD_ARG_LIT
}
static int openvzSetInitialConfig(virDomainDefPtr vmdef)
{
int ret = -1;
int vpsid;
char * confdir = NULL;
const char *prog[OPENVZ_MAX_ARG];
prog[0] = NULL;
if (vmdef->nfss > 1) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("only one filesystem supported"));
goto cleanup;
}
if (vmdef->nfss == 1 &&
vmdef->fss[0]->type != VIR_DOMAIN_FS_TYPE_TEMPLATE &&
vmdef->fss[0]->type != VIR_DOMAIN_FS_TYPE_MOUNT)
{
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("filesystem is not of type 'template' or 'mount'"));
goto cleanup;
}
if (vmdef->nfss == 1 &&
vmdef->fss[0]->type == VIR_DOMAIN_FS_TYPE_MOUNT)
{
if (virStrToLong_i(vmdef->name, NULL, 10, &vpsid) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not convert domain name to VEID"));
goto cleanup;
}
if (openvzCopyDefaultConfig(vpsid) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not copy default config"));
goto cleanup;
}
if (openvzWriteVPSConfigParam(vpsid, "VE_PRIVATE", vmdef->fss[0]->src) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not set the source dir for the filesystem"));
goto cleanup;
}
}
else
{
if (openvzDomainDefineCmd(prog, OPENVZ_MAX_ARG, vmdef) < 0) {
VIR_ERROR(_("Error creating command for container"));
goto cleanup;
}
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
}
ret = 0;
cleanup:
VIR_FREE(confdir);
cmdExecFree(prog);
return ret;
}
static virDomainPtr openvzDomainLookupByID(virConnectPtr conn,
int id) {
struct openvz_driver *driver = conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
openvzDriverLock(driver);
vm = virDomainFindByID(&driver->domains, id);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom)
dom->id = vm->def->id;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return dom;
}
static int openvzGetVersion(virConnectPtr conn, unsigned long *version) {
struct openvz_driver *driver = conn->privateData;
openvzDriverLock(driver);
*version = driver->version;
openvzDriverUnlock(driver);
return 0;
}
static char *openvzGetOSType(virDomainPtr dom)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *ret = NULL;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (!(ret = strdup(vm->def->os.type)))
virReportOOMError();
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static virDomainPtr openvzDomainLookupByUUID(virConnectPtr conn,
const unsigned char *uuid) {
struct openvz_driver *driver = conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom)
dom->id = vm->def->id;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return dom;
}
static virDomainPtr openvzDomainLookupByName(virConnectPtr conn,
const char *name) {
struct openvz_driver *driver = conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
openvzDriverLock(driver);
vm = virDomainFindByName(&driver->domains, name);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom)
dom->id = vm->def->id;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return dom;
}
static int openvzDomainGetInfo(virDomainPtr dom,
virDomainInfoPtr info) {
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
info->state = virDomainObjGetState(vm, NULL);
if (!virDomainObjIsActive(vm)) {
info->cpuTime = 0;
} else {
if (openvzGetProcessInfo(&(info->cpuTime), dom->id) < 0) {
openvzError(VIR_ERR_OPERATION_FAILED,
_("cannot read cputime for domain %d"), dom->id);
goto cleanup;
}
}
info->maxMem = vm->def->mem.max_balloon;
info->memory = vm->def->mem.cur_balloon;
info->nrVirtCpu = vm->def->vcpus;
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int
openvzDomainGetState(virDomainPtr dom,
int *state,
int *reason,
unsigned int flags)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
*state = virDomainObjGetState(vm, reason);
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int openvzDomainIsActive(virDomainPtr dom)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr obj;
int ret = -1;
openvzDriverLock(driver);
obj = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!obj) {
openvzError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
ret = virDomainObjIsActive(obj);
cleanup:
if (obj)
virDomainObjUnlock(obj);
return ret;
}
static int openvzDomainIsPersistent(virDomainPtr dom)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr obj;
int ret = -1;
openvzDriverLock(driver);
obj = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!obj) {
openvzError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
ret = obj->persistent;
cleanup:
if (obj)
virDomainObjUnlock(obj);
return ret;
}
static int openvzDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED)
{
return 0;
}
static char *openvzDomainGetXMLDesc(virDomainPtr dom, int flags) {
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *ret = NULL;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
ret = virDomainDefFormat(vm->def, flags);
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
/*
* Convenient helper to target a command line argv
* and fill in an empty slot with the supplied
* key value. This lets us declare the argv on the
* stack and just splice in the domain name after
*/
#define PROGRAM_SENTINAL ((char *)0x1)
static void openvzSetProgramSentinal(const char **prog, const char *key)
{
const char **tmp = prog;
while (tmp && *tmp) {
if (*tmp == PROGRAM_SENTINAL) {
*tmp = key;
break;
}
tmp++;
}
}
static int openvzDomainSuspend(virDomainPtr dom) {
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = {VZCTL, "--quiet", "chkpnt", PROGRAM_SENTINAL, "--suspend", NULL};
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (!virDomainObjIsActive(vm)) {
openvzError(VIR_ERR_OPERATION_INVALID, "%s",
_("Domain is not running"));
goto cleanup;
}
if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_PAUSED) {
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
virDomainObjSetState(vm, VIR_DOMAIN_PAUSED, VIR_DOMAIN_PAUSED_USER);
}
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int openvzDomainResume(virDomainPtr dom) {
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = {VZCTL, "--quiet", "chkpnt", PROGRAM_SENTINAL, "--resume", NULL};
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (!virDomainObjIsActive(vm)) {
openvzError(VIR_ERR_OPERATION_INVALID, "%s",
_("Domain is not running"));
goto cleanup;
}
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_PAUSED) {
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
virDomainObjSetState(vm, VIR_DOMAIN_RUNNING, VIR_DOMAIN_RUNNING_UNPAUSED);
}
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int openvzDomainShutdown(virDomainPtr dom) {
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = {VZCTL, "--quiet", "stop", PROGRAM_SENTINAL, NULL};
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
openvzSetProgramSentinal(prog, vm->def->name);
if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_RUNNING) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("domain is not in running state"));
goto cleanup;
}
if (virRun(prog, NULL) < 0)
goto cleanup;
vm->def->id = -1;
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, VIR_DOMAIN_SHUTOFF_SHUTDOWN);
dom->id = -1;
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int openvzDomainReboot(virDomainPtr dom,
unsigned int flags ATTRIBUTE_UNUSED) {
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = {VZCTL, "--quiet", "restart", PROGRAM_SENTINAL, NULL};
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
openvzSetProgramSentinal(prog, vm->def->name);
if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_RUNNING) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("domain is not in running state"));
goto cleanup;
}
if (virRun(prog, NULL) < 0)
goto cleanup;
ret = 0;
virDomainObjSetState(vm, VIR_DOMAIN_RUNNING, VIR_DOMAIN_RUNNING_BOOTED);
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static char *
openvzGenerateVethName(int veid, char *dev_name_ve)
{
char dev_name[32];
int ifNo = 0;
if (sscanf(dev_name_ve, "%*[^0-9]%d", &ifNo) != 1)
return NULL;
if (snprintf(dev_name, sizeof(dev_name), "veth%d.%d", veid, ifNo) < 7)
return NULL;
return strdup(dev_name);
}
static char *
openvzGenerateContainerVethName(int veid)
{
char *temp = NULL;
char *name = NULL;
/* try to get line "^NETIF=..." from config */
if (openvzReadVPSConfigParam(veid, "NETIF", &temp) <= 0) {
name = strdup("eth0");
} else {
char *saveptr = NULL;
char *s;
int max = 0;
/* get maximum interface number (actually, it is the last one) */
for (s=strtok_r(temp, ";", &saveptr); s; s=strtok_r(NULL, ";", &saveptr)) {
int x;
if (sscanf(s, "ifname=eth%d", &x) != 1) return NULL;
if (x > max) max = x;
}
/* set new name */
virAsprintf(&name, "eth%d", max + 1);
}
VIR_FREE(temp);
if (name == NULL) {
virReportOOMError();
}
return name;
}
static int
openvzDomainSetNetwork(virConnectPtr conn, const char *vpsid,
virDomainNetDefPtr net,
virBufferPtr configBuf)
{
int rc = 0, narg;
const char *prog[OPENVZ_MAX_ARG];
char macaddr[VIR_MAC_STRING_BUFLEN];
unsigned char host_mac[VIR_MAC_BUFLEN];
char host_macaddr[VIR_MAC_STRING_BUFLEN];
struct openvz_driver *driver = conn->privateData;
char *opt = NULL;
#define ADD_ARG_LIT(thisarg) \
do { \
if (narg >= OPENVZ_MAX_ARG) \
goto no_memory; \
if ((prog[narg++] = strdup(thisarg)) == NULL) \
goto no_memory; \
} while (0)
if (net == NULL)
return 0;
if (vpsid == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Container ID is not specified"));
return -1;
}
for (narg = 0; narg < OPENVZ_MAX_ARG; narg++)
prog[narg] = NULL;
narg = 0;
if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE ||
net->type == VIR_DOMAIN_NET_TYPE_ETHERNET) {
ADD_ARG_LIT(VZCTL);
ADD_ARG_LIT("--quiet");
ADD_ARG_LIT("set");
ADD_ARG_LIT(vpsid);
}
virFormatMacAddr(net->mac, macaddr);
virCapabilitiesGenerateMac(driver->caps, host_mac);
virFormatMacAddr(host_mac, host_macaddr);
if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE ||
(net->type == VIR_DOMAIN_NET_TYPE_ETHERNET &&
net->data.ethernet.ipaddr == NULL)) {
virBuffer buf = VIR_BUFFER_INITIALIZER;
int veid = openvzGetVEID(vpsid);
/* --netif_add ifname[,mac,host_ifname,host_mac] */
ADD_ARG_LIT("--netif_add") ;
/* if user doesn't specify guest interface name,
* then we need to generate it */
if (net->data.ethernet.dev == NULL) {
net->data.ethernet.dev = openvzGenerateContainerVethName(veid);
if (net->data.ethernet.dev == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not generate eth name for container"));
rc = -1;
goto exit;
}
}
/* if user doesn't specified host interface name,
* than we need to generate it */
if (net->ifname == NULL) {
net->ifname = openvzGenerateVethName(veid, net->data.ethernet.dev);
if (net->ifname == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not generate veth name"));
rc = -1;
goto exit;
}
}
virBufferAdd(&buf, net->data.ethernet.dev, -1); /* Guest dev */
virBufferAsprintf(&buf, ",%s", macaddr); /* Guest dev mac */
virBufferAsprintf(&buf, ",%s", net->ifname); /* Host dev */
virBufferAsprintf(&buf, ",%s", host_macaddr); /* Host dev mac */
if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
if (driver->version >= VZCTL_BRIDGE_MIN_VERSION) {
virBufferAsprintf(&buf, ",%s", net->data.bridge.brname); /* Host bridge */
} else {
virBufferAsprintf(configBuf, "ifname=%s", net->data.ethernet.dev);
virBufferAsprintf(configBuf, ",mac=%s", macaddr); /* Guest dev mac */
virBufferAsprintf(configBuf, ",host_ifname=%s", net->ifname); /* Host dev */
virBufferAsprintf(configBuf, ",host_mac=%s", host_macaddr); /* Host dev mac */
virBufferAsprintf(configBuf, ",bridge=%s", net->data.bridge.brname); /* Host bridge */
}
}
if (!(opt = virBufferContentAndReset(&buf)))
goto no_memory;
ADD_ARG_LIT(opt) ;
VIR_FREE(opt);
} else if (net->type == VIR_DOMAIN_NET_TYPE_ETHERNET &&
net->data.ethernet.ipaddr != NULL) {
/* --ipadd ip */
ADD_ARG_LIT("--ipadd") ;
ADD_ARG_LIT(net->data.ethernet.ipaddr) ;
}
/* TODO: processing NAT and physical device */
if (prog[0] != NULL) {
ADD_ARG_LIT("--save");
if (virRun(prog, NULL) < 0) {
rc = -1;
goto exit;
}
}
exit:
cmdExecFree(prog);
return rc;
no_memory:
VIR_FREE(opt);
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not put argument to %s"), VZCTL);
cmdExecFree(prog);
return -1;
#undef ADD_ARG_LIT
}
static int
openvzDomainSetNetworkConfig(virConnectPtr conn,
virDomainDefPtr def)
{
unsigned int i;
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *param;
int first = 1;
struct openvz_driver *driver = conn->privateData;
for (i = 0 ; i < def->nnets ; i++) {
if (driver->version < VZCTL_BRIDGE_MIN_VERSION &&
def->nets[i]->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
if (first)
first = 0;
else
virBufferAddLit(&buf, ";");
}
if (openvzDomainSetNetwork(conn, def->name, def->nets[i], &buf) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not configure network"));
goto exit;
}
}
if (driver->version < VZCTL_BRIDGE_MIN_VERSION && def->nnets) {
param = virBufferContentAndReset(&buf);
if (param) {
if (openvzWriteVPSConfigParam(strtoI(def->name), "NETIF", param) < 0) {
VIR_FREE(param);
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot replace NETIF config"));
return -1;
}
VIR_FREE(param);
}
}
return 0;
exit:
virBufferFreeAndReset(&buf);
return -1;
}
static virDomainPtr
openvzDomainDefineXML(virConnectPtr conn, const char *xml)
{
struct openvz_driver *driver = conn->privateData;
virDomainDefPtr vmdef = NULL;
virDomainObjPtr vm = NULL;
virDomainPtr dom = NULL;
openvzDriverLock(driver);
if ((vmdef = virDomainDefParseString(driver->caps, xml,
VIR_DOMAIN_XML_INACTIVE)) == NULL)
goto cleanup;
vm = virDomainFindByName(&driver->domains, vmdef->name);
if (vm) {
openvzError(VIR_ERR_OPERATION_FAILED,
_("Already an OPENVZ VM active with the id '%s'"),
vmdef->name);
goto cleanup;
}
if (!(vm = virDomainAssignDef(driver->caps,
&driver->domains, vmdef, false)))
goto cleanup;
vmdef = NULL;
vm->persistent = 1;
if (openvzSetInitialConfig(vm->def) < 0) {
VIR_ERROR(_("Error creating initial configuration"));
goto cleanup;
}
/* TODO: set quota */
if (openvzSetDefinedUUID(strtoI(vm->def->name), vm->def->uuid) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not set UUID"));
goto cleanup;
}
if (openvzDomainSetNetworkConfig(conn, vm->def) < 0)
goto cleanup;
if (vm->def->vcpus != vm->def->maxvcpus) {
openvzError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("current vcpu count must equal maximum"));
goto cleanup;
}
if (vm->def->maxvcpus > 0) {
if (openvzDomainSetVcpusInternal(vm, vm->def->maxvcpus) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not set number of virtual cpu"));
goto cleanup;
}
}
if (vm->def->mem.cur_balloon > 0) {
if (openvzDomainSetMemoryInternal(vm, vm->def->mem.cur_balloon) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not set memory size"));
goto cleanup;
}
}
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom)
dom->id = -1;
cleanup:
virDomainDefFree(vmdef);
if (vm)
virDomainObjUnlock(vm);
openvzDriverUnlock(driver);
return dom;
}
static virDomainPtr
openvzDomainCreateXML(virConnectPtr conn, const char *xml,
unsigned int flags)
{
struct openvz_driver *driver = conn->privateData;
virDomainDefPtr vmdef = NULL;
virDomainObjPtr vm = NULL;
virDomainPtr dom = NULL;
const char *progstart[] = {VZCTL, "--quiet", "start", PROGRAM_SENTINAL, NULL};
virCheckFlags(0, NULL);
openvzDriverLock(driver);
if ((vmdef = virDomainDefParseString(driver->caps, xml,
VIR_DOMAIN_XML_INACTIVE)) == NULL)
goto cleanup;
vm = virDomainFindByName(&driver->domains, vmdef->name);
if (vm) {
openvzError(VIR_ERR_OPERATION_FAILED,
_("Already an OPENVZ VM defined with the id '%s'"),
vmdef->name);
goto cleanup;
}
if (!(vm = virDomainAssignDef(driver->caps,
&driver->domains, vmdef, false)))
goto cleanup;
vmdef = NULL;
/* All OpenVZ domains seem to be persistent - this is a bit of a violation
* of this libvirt API which is intended for transient domain creation */
vm->persistent = 1;
if (openvzSetInitialConfig(vm->def) < 0) {
VIR_ERROR(_("Error creating initial configuration"));
goto cleanup;
}
if (openvzSetDefinedUUID(strtoI(vm->def->name), vm->def->uuid) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not set UUID"));
goto cleanup;
}
if (openvzDomainSetNetworkConfig(conn, vm->def) < 0)
goto cleanup;
openvzSetProgramSentinal(progstart, vm->def->name);
if (virRun(progstart, NULL) < 0) {
goto cleanup;
}
vm->pid = strtoI(vm->def->name);
vm->def->id = vm->pid;
virDomainObjSetState(vm, VIR_DOMAIN_RUNNING, VIR_DOMAIN_RUNNING_BOOTED);
if (vm->def->maxvcpus > 0) {
if (openvzDomainSetVcpusInternal(vm, vm->def->maxvcpus) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not set number of virtual cpu"));
goto cleanup;
}
}
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom)
dom->id = vm->def->id;
cleanup:
virDomainDefFree(vmdef);
if (vm)
virDomainObjUnlock(vm);
openvzDriverUnlock(driver);
return dom;
}
static int
openvzDomainCreateWithFlags(virDomainPtr dom, unsigned int flags)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = {VZCTL, "--quiet", "start", PROGRAM_SENTINAL, NULL };
int ret = -1;
virCheckFlags(0, -1);
openvzDriverLock(driver);
vm = virDomainFindByName(&driver->domains, dom->name);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching id"));
goto cleanup;
}
if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_SHUTOFF) {
openvzError(VIR_ERR_OPERATION_DENIED, "%s",
_("domain is not in shutoff state"));
goto cleanup;
}
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
vm->pid = strtoI(vm->def->name);
vm->def->id = vm->pid;
dom->id = vm->pid;
virDomainObjSetState(vm, VIR_DOMAIN_RUNNING, VIR_DOMAIN_RUNNING_BOOTED);
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int
openvzDomainCreate(virDomainPtr dom)
{
return openvzDomainCreateWithFlags(dom, 0);
}
static int
openvzDomainUndefine(virDomainPtr dom)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = { VZCTL, "--quiet", "destroy", PROGRAM_SENTINAL, NULL };
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainObjIsActive(vm)) {
openvzError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot delete active domain"));
goto cleanup;
}
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
virDomainRemoveInactive(&driver->domains, vm);
vm = NULL;
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
openvzDriverUnlock(driver);
return ret;
}
static int
openvzDomainSetAutostart(virDomainPtr dom, int autostart)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *prog[] = { VZCTL, "--quiet", "set", PROGRAM_SENTINAL,
"--onboot", autostart ? "yes" : "no",
"--save", NULL };
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int
openvzDomainGetAutostart(virDomainPtr dom, int *autostart)
{
struct openvz_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *value = NULL;
int ret = -1;
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (openvzReadVPSConfigParam(strtoI(vm->def->name), "ONBOOT", &value) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not read container config"));
goto cleanup;
}
*autostart = 0;
if (STREQ(value,"yes"))
*autostart = 1;
ret = 0;
cleanup:
VIR_FREE(value);
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int openvzGetMaxVCPUs(virConnectPtr conn ATTRIBUTE_UNUSED,
const char *type)
{
if (type == NULL || STRCASEEQ(type, "openvz"))
return 1028; /* OpenVZ has no limitation */
openvzError(VIR_ERR_INVALID_ARG,
_("unknown type '%s'"), type);
return -1;
}
static int
openvzDomainGetVcpusFlags(virDomainPtr dom ATTRIBUTE_UNUSED,
unsigned int flags)
{
if (flags != (VIR_DOMAIN_AFFECT_LIVE | VIR_DOMAIN_VCPU_MAXIMUM)) {
openvzError(VIR_ERR_INVALID_ARG, _("unsupported flags (0x%x)"), flags);
return -1;
}
return openvzGetMaxVCPUs(NULL, "openvz");
}
static int openvzDomainGetMaxVcpus(virDomainPtr dom)
{
return openvzDomainGetVcpusFlags(dom, (VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_VCPU_MAXIMUM));
}
static int openvzDomainSetVcpusInternal(virDomainObjPtr vm,
unsigned int nvcpus)
{
char str_vcpus[32];
const char *prog[] = { VZCTL, "--quiet", "set", PROGRAM_SENTINAL,
"--cpus", str_vcpus, "--save", NULL };
unsigned int pcpus;
pcpus = openvzGetNodeCPUs();
if (pcpus > 0 && pcpus < nvcpus)
nvcpus = pcpus;
snprintf(str_vcpus, 31, "%d", nvcpus);
str_vcpus[31] = '\0';
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
return -1;
}
vm->def->maxvcpus = vm->def->vcpus = nvcpus;
return 0;
}
static int openvzDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
unsigned int flags)
{
virDomainObjPtr vm;
struct openvz_driver *driver = dom->conn->privateData;
int ret = -1;
if (flags != VIR_DOMAIN_AFFECT_LIVE) {
openvzError(VIR_ERR_INVALID_ARG, _("unsupported flags (0x%x)"), flags);
return -1;
}
openvzDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
openvzDriverUnlock(driver);
if (!vm) {
openvzError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (nvcpus <= 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("VCPUs should be >= 1"));
goto cleanup;
}
openvzDomainSetVcpusInternal(vm, nvcpus);
ret = 0;
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static int
openvzDomainSetVcpus(virDomainPtr dom, unsigned int nvcpus)
{
return openvzDomainSetVcpusFlags(dom, nvcpus, VIR_DOMAIN_AFFECT_LIVE);
}
static virDrvOpenStatus openvzOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED)
{
struct openvz_driver *driver;
if (conn->uri == NULL) {
if (!virFileExists("/proc/vz"))
return VIR_DRV_OPEN_DECLINED;
if (access("/proc/vz", W_OK) < 0)
return VIR_DRV_OPEN_DECLINED;
conn->uri = xmlParseURI("openvz:///system");
if (conn->uri == NULL) {
virReportOOMError();
return VIR_DRV_OPEN_ERROR;
}
} else {
/* If scheme isn't 'openvz', then its for another driver */
if (conn->uri->scheme == NULL ||
STRNEQ (conn->uri->scheme, "openvz"))
return VIR_DRV_OPEN_DECLINED;
/* If server name is given, its for remote driver */
if (conn->uri->server != NULL)
return VIR_DRV_OPEN_DECLINED;
/* If path isn't /system, then they typoed, so tell them correct path */
if (conn->uri->path == NULL ||
STRNEQ (conn->uri->path, "/system")) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("unexpected OpenVZ URI path '%s', try openvz:///system"),
conn->uri->path);
return VIR_DRV_OPEN_ERROR;
}
if (!virFileExists("/proc/vz")) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("OpenVZ control file /proc/vz does not exist"));
return VIR_DRV_OPEN_ERROR;
}
if (access("/proc/vz", W_OK) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("OpenVZ control file /proc/vz is not accessible"));
return VIR_DRV_OPEN_ERROR;
}
}
/* We now know the URI is definitely for this driver, so beyond
* here, don't return DECLINED, always use ERROR */
if (VIR_ALLOC(driver) < 0) {
virReportOOMError();
return VIR_DRV_OPEN_ERROR;
}
if (virDomainObjListInit(&driver->domains) < 0)
goto cleanup;
if (!(driver->caps = openvzCapsInit()))
goto cleanup;
if (openvzLoadDomains(driver) < 0)
goto cleanup;
if (openvzExtractVersion(driver) < 0)
goto cleanup;
conn->privateData = driver;
return VIR_DRV_OPEN_SUCCESS;
cleanup:
openvzFreeDriver(driver);
return VIR_DRV_OPEN_ERROR;
};
static int openvzClose(virConnectPtr conn) {
struct openvz_driver *driver = conn->privateData;
openvzFreeDriver(driver);
conn->privateData = NULL;
return 0;
}
static const char *openvzGetType(virConnectPtr conn ATTRIBUTE_UNUSED) {
return "OpenVZ";
}
static int openvzIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED) {
/* Encryption is not relevant / applicable to way we talk to openvz */
return 0;
}
static int openvzIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED) {
/* We run CLI tools directly so this is secure */
return 1;
}
static char *openvzGetCapabilities(virConnectPtr conn) {
struct openvz_driver *driver = conn->privateData;
char *ret;
openvzDriverLock(driver);
ret = virCapabilitiesFormatXML(driver->caps);
openvzDriverUnlock(driver);
return ret;
}
static int openvzListDomains(virConnectPtr conn ATTRIBUTE_UNUSED,
int *ids, int nids) {
int got = 0;
int veid;
int outfd = -1;
int rc = -1;
int ret;
char buf[32];
char *endptr;
virCommandPtr cmd = virCommandNewArgList(VZLIST, "-ovpsid", "-H" , NULL);
virCommandSetOutputFD(cmd, &outfd);
if (virCommandRunAsync(cmd, NULL) < 0)
goto cleanup;
while (got < nids) {
ret = openvz_readline(outfd, buf, 32);
if (!ret)
break;
if (virStrToLong_i(buf, &endptr, 10, &veid) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not parse VPS ID %s"), buf);
continue;
}
ids[got] = veid;
got ++;
}
if (virCommandWait(cmd, NULL) < 0)
goto cleanup;
if (VIR_CLOSE(outfd) < 0) {
virReportSystemError(errno, "%s", _("failed to close file"));
goto cleanup;
}
rc = got;
cleanup:
VIR_FORCE_CLOSE(outfd);
virCommandFree(cmd);
return rc;
}
static int openvzNumDomains(virConnectPtr conn) {
struct openvz_driver *driver = conn->privateData;
int n;
openvzDriverLock(driver);
n = virDomainObjListNumOfDomains(&driver->domains, 1);
openvzDriverUnlock(driver);
return n;
}
static int openvzListDefinedDomains(virConnectPtr conn ATTRIBUTE_UNUSED,
char **const names, int nnames) {
int got = 0;
int veid, outfd = -1, ret;
int rc = -1;
char vpsname[32];
char buf[32];
char *endptr;
virCommandPtr cmd = virCommandNewArgList(VZLIST,
"-ovpsid", "-H", "-S", NULL);
/* the -S options lists only stopped domains */
virCommandSetOutputFD(cmd, &outfd);
if (virCommandRunAsync(cmd, NULL) < 0)
goto out;
while (got < nnames) {
ret = openvz_readline(outfd, buf, 32);
if (!ret)
break;
if (virStrToLong_i(buf, &endptr, 10, &veid) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not parse VPS ID %s"), buf);
continue;
}
snprintf(vpsname, sizeof(vpsname), "%d", veid);
if (!(names[got] = strdup(vpsname))) {
virReportOOMError();
goto out;
}
got ++;
}
if (virCommandWait(cmd, NULL) < 0)
goto out;
if (VIR_CLOSE(outfd) < 0) {
virReportSystemError(errno, "%s", _("failed to close file"));
goto out;
}
rc = got;
out:
VIR_FORCE_CLOSE(outfd);
virCommandFree(cmd);
if (rc < 0) {
for ( ; got >= 0 ; got--)
VIR_FREE(names[got]);
}
return rc;
}
static int openvzGetProcessInfo(unsigned long long *cpuTime, int vpsid)
{
FILE *fp;
char *line = NULL;
size_t line_size = 0;
unsigned long long usertime, systime, nicetime;
int readvps = vpsid + 1; /* ensure readvps is initially different */
ssize_t ret;
int err = 0;
/* read statistic from /proc/vz/vestat.
sample:
Version: 2.2
VEID user nice system uptime idle other..
33 78 0 1330 59454597 142650441835148 other..
55 178 0 5340 59424597 542650441835148 other..
*/
if ((fp = fopen("/proc/vz/vestat", "r")) == NULL)
return -1;
/*search line with VEID=vpsid*/
while (1) {
ret = getline(&line, &line_size, fp);
if (ret < 0) {
err = !feof(fp);
break;
}
if (sscanf (line, "%d %llu %llu %llu",
&readvps, &usertime, &nicetime, &systime) == 4
&& readvps == vpsid) { /*found vpsid*/
/* convert jiffies to nanoseconds */
*cpuTime = (1000ull * 1000ull * 1000ull
* (usertime + nicetime + systime)
/ (unsigned long long)sysconf(_SC_CLK_TCK));
break;
}
}
VIR_FREE(line);
VIR_FORCE_FCLOSE(fp);
if (err)
return -1;
if (readvps != vpsid) /*not found*/
return -1;
return 0;
}
static int openvzNumDefinedDomains(virConnectPtr conn) {
struct openvz_driver *driver = conn->privateData;
int n;
openvzDriverLock(driver);
n = virDomainObjListNumOfDomains(&driver->domains, 0);
openvzDriverUnlock(driver);
return n;
}
static int
openvzDomainSetMemoryInternal(virDomainObjPtr vm,
unsigned long mem)
{
char str_mem[16];
const char *prog[] = { VZCTL, "--quiet", "set", PROGRAM_SENTINAL,
"--kmemsize", str_mem, "--save", NULL
};
/* memory has to be changed its format from kbyte to byte */
snprintf(str_mem, sizeof(str_mem), "%lu", mem * 1024);
openvzSetProgramSentinal(prog, vm->def->name);
if (virRun(prog, NULL) < 0) {
goto cleanup;
}
return 0;
cleanup:
return -1;
}
static virDriver openvzDriver = {
.no = VIR_DRV_OPENVZ,
.name = "OPENVZ",
.open = openvzOpen, /* 0.3.1 */
.close = openvzClose, /* 0.3.1 */
.type = openvzGetType, /* 0.3.1 */
.version = openvzGetVersion, /* 0.5.0 */
.getMaxVcpus = openvzGetMaxVCPUs, /* 0.4.6 */
.nodeGetInfo = nodeGetInfo, /* 0.3.2 */
.getCapabilities = openvzGetCapabilities, /* 0.4.6 */
.listDomains = openvzListDomains, /* 0.3.1 */
.numOfDomains = openvzNumDomains, /* 0.3.1 */
.domainCreateXML = openvzDomainCreateXML, /* 0.3.3 */
.domainLookupByID = openvzDomainLookupByID, /* 0.3.1 */
.domainLookupByUUID = openvzDomainLookupByUUID, /* 0.3.1 */
.domainLookupByName = openvzDomainLookupByName, /* 0.3.1 */
.domainSuspend = openvzDomainSuspend, /* 0.8.3 */
.domainResume = openvzDomainResume, /* 0.8.3 */
.domainShutdown = openvzDomainShutdown, /* 0.3.1 */
.domainReboot = openvzDomainReboot, /* 0.3.1 */
.domainDestroy = openvzDomainShutdown, /* 0.3.1 */
.domainGetOSType = openvzGetOSType, /* 0.3.1 */
.domainGetInfo = openvzDomainGetInfo, /* 0.3.1 */
.domainGetState = openvzDomainGetState, /* 0.9.2 */
.domainSetVcpus = openvzDomainSetVcpus, /* 0.4.6 */
.domainSetVcpusFlags = openvzDomainSetVcpusFlags, /* 0.8.5 */
.domainGetVcpusFlags = openvzDomainGetVcpusFlags, /* 0.8.5 */
.domainGetMaxVcpus = openvzDomainGetMaxVcpus, /* 0.4.6 */
.domainGetXMLDesc = openvzDomainGetXMLDesc, /* 0.4.6 */
.listDefinedDomains = openvzListDefinedDomains, /* 0.3.1 */
.numOfDefinedDomains = openvzNumDefinedDomains, /* 0.3.1 */
.domainCreate = openvzDomainCreate, /* 0.3.1 */
.domainCreateWithFlags = openvzDomainCreateWithFlags, /* 0.8.2 */
.domainDefineXML = openvzDomainDefineXML, /* 0.3.3 */
.domainUndefine = openvzDomainUndefine, /* 0.3.3 */
.domainGetAutostart = openvzDomainGetAutostart, /* 0.4.6 */
.domainSetAutostart = openvzDomainSetAutostart, /* 0.4.6 */
.isEncrypted = openvzIsEncrypted, /* 0.7.3 */
.isSecure = openvzIsSecure, /* 0.7.3 */
.domainIsActive = openvzDomainIsActive, /* 0.7.3 */
.domainIsPersistent = openvzDomainIsPersistent, /* 0.7.3 */
.domainIsUpdated = openvzDomainIsUpdated, /* 0.8.6 */
};
int openvzRegister(void) {
virRegisterDriver(&openvzDriver);
return 0;
}
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