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libvirt/src/openvz/openvz_conf.c
Chris Lalancette 29045d88ed Fix build of openvz on RHEL-5. 
When building libvirt on RHEL-5, I saw this error:

cc1: warnings being treated as errors
openvz/openvz_conf.c: In function 'openvzGetVPSUUID':
openvz/openvz_conf.c:835: warning: 'saveptr' may be used uninitialized in this function
make[3]: *** [libvirt_driver_openvz_la-openvz_conf.lo] Error 1

gcc in RHEL-5 gets upset about this usage of strtok_r (even though
it is perfectly valid).  Just set *saveptr to NULL at the
start to quiet it down.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-04-13 16:28:10 -04:00

994 lines
24 KiB
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/*
* openvz_conf.c: config functions for managing OpenVZ VEs
*
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <dirent.h>
#include <strings.h>
#include <time.h>
#include <sys/stat.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <string.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include "virterror_internal.h"
#include "openvz_conf.h"
#include "uuid.h"
#include "buf.h"
#include "memory.h"
#include "util.h"
#include "nodeinfo.h"
#define VIR_FROM_THIS VIR_FROM_OPENVZ
static char *openvzLocateConfDir(void);
static int openvzGetVPSUUID(int vpsid, char *uuidstr, size_t len);
static int openvzLocateConfFile(int vpsid, char *conffile, int maxlen, const char *ext);
static int openvzAssignUUIDs(void);
int
strtoI(const char *str)
{
int val;
if (virStrToLong_i(str, NULL, 10, &val) < 0)
return 0 ;
return val;
}
static int
openvzExtractVersionInfo(const char *cmd, int *retversion)
{
const char *const vzarg[] = { cmd, "--help", NULL };
const char *const vzenv[] = { "LC_ALL=C", NULL };
pid_t child;
int newstdout = -1;
int ret = -1, status;
unsigned long version;
char *tmp;
if (retversion)
*retversion = 0;
if (virExec(vzarg, vzenv, NULL,
&child, -1, &newstdout, NULL, VIR_EXEC_NONE) < 0)
return -1;
char *help = NULL;
int len = virFileReadLimFD(newstdout, 4096, &help);
if (len < 0)
goto cleanup2;
tmp = help;
/* expected format: vzctl version <major>.<minor>.<micro> */
if ((tmp = STRSKIP(tmp, "vzctl version ")) == NULL)
goto cleanup2;
if (virParseVersionString(tmp, &version) < 0)
goto cleanup2;
if (retversion)
*retversion = version;
ret = 0;
cleanup2:
VIR_FREE(help);
if (close(newstdout) < 0)
ret = -1;
rewait:
if (waitpid(child, &status, 0) != child) {
if (errno == EINTR)
goto rewait;
ret = -1;
}
return ret;
}
int openvzExtractVersion(struct openvz_driver *driver)
{
if (driver->version > 0)
return 0;
if (openvzExtractVersionInfo(VZCTL, &driver->version) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not extract vzctl version"));
return -1;
}
return 0;
}
virCapsPtr openvzCapsInit(void)
{
struct utsname utsname;
virCapsPtr caps;
virCapsGuestPtr guest;
uname(&utsname);
if ((caps = virCapabilitiesNew(utsname.machine,
0, 0)) == NULL)
goto no_memory;
if (nodeCapsInitNUMA(caps) < 0)
goto no_memory;
virCapabilitiesSetMacPrefix(caps, (unsigned char[]){ 0x52, 0x54, 0x00 });
if ((guest = virCapabilitiesAddGuest(caps,
"exe",
utsname.machine,
sizeof(int) == 4 ? 32 : 8,
NULL,
NULL,
0,
NULL)) == NULL)
goto no_memory;
if (virCapabilitiesAddGuestDomain(guest,
"openvz",
NULL,
NULL,
0,
NULL) == NULL)
goto no_memory;
return caps;
no_memory:
virCapabilitiesFree(caps);
return NULL;
}
static int
openvzReadNetworkConf(virDomainDefPtr def,
int veid) {
int ret;
virDomainNetDefPtr net = NULL;
char temp[4096];
char *token, *saveptr = NULL;
/*parse routing network configuration*
* Sample from config:
* IP_ADDRESS="1.1.1.1 1.1.1.2"
* splited IPs by space
*/
ret = openvzReadVPSConfigParam(veid, "IP_ADDRESS", temp, sizeof(temp));
if (ret < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not read 'IP_ADDRESS' from config for container %d"),
veid);
goto error;
} else if (ret > 0) {
token = strtok_r(temp, " ", &saveptr);
while (token != NULL) {
if (VIR_ALLOC(net) < 0)
goto no_memory;
net->type = VIR_DOMAIN_NET_TYPE_ETHERNET;
net->data.ethernet.ipaddr = strdup(token);
if (net->data.ethernet.ipaddr == NULL)
goto no_memory;
if (VIR_REALLOC_N(def->nets, def->nnets + 1) < 0)
goto no_memory;
def->nets[def->nnets++] = net;
net = NULL;
token = strtok_r(NULL, " ", &saveptr);
}
}
/*parse bridge devices*/
/*Sample from config:
*NETIF="ifname=eth10,mac=00:18:51:C1:05:EE,host_ifname=veth105.10,host_mac=00:18:51:8F:D9:F3"
*devices splited by ';'
*/
ret = openvzReadVPSConfigParam(veid, "NETIF", temp, sizeof(temp));
if (ret < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not read 'NETIF' from config for container %d"),
veid);
goto error;
} else if (ret > 0) {
token = strtok_r(temp, ";", &saveptr);
while (token != NULL) {
/*add new device to list*/
if (VIR_ALLOC(net) < 0)
goto no_memory;
net->type = VIR_DOMAIN_NET_TYPE_BRIDGE;
char *p = token;
char cpy_temp[32];
int len;
/*parse string*/
do {
char *next = strchrnul (token, ',');
if (STRPREFIX(p, "ifname=")) {
/* skip in libvirt */
} else if (STRPREFIX(p, "host_ifname=")) {
p += 12;
len = next - p;
if (len > 16) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Too long network device name"));
goto error;
}
if (VIR_ALLOC_N(net->ifname, len+1) < 0)
goto no_memory;
if (virStrncpy(net->ifname, p, len, len+1) == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Network ifname %s too long for destination"), p);
goto error;
}
} else if (STRPREFIX(p, "bridge=")) {
p += 7;
len = next - p;
if (len > 16) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Too long bridge device name"));
goto error;
}
if (VIR_ALLOC_N(net->data.bridge.brname, len+1) < 0)
goto no_memory;
if (virStrncpy(net->data.bridge.brname, p, len, len+1) == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Bridge name %s too long for destination"), p);
goto error;
}
} else if (STRPREFIX(p, "mac=")) {
p += 4;
len = next - p;
if (len != 17) { //should be 17
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Wrong length MAC address"));
goto error;
}
if (virStrncpy(cpy_temp, p, len, sizeof(cpy_temp)) == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("MAC address %s too long for destination"), p);
goto error;
}
if (virParseMacAddr(cpy_temp, net->mac) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Wrong MAC address"));
goto error;
}
}
p = ++next;
} while (p < token + strlen(token));
if (VIR_REALLOC_N(def->nets, def->nnets + 1) < 0)
goto no_memory;
def->nets[def->nnets++] = net;
net = NULL;
token = strtok_r(NULL, ";", &saveptr);
}
}
return 0;
no_memory:
virReportOOMError();
error:
virDomainNetDefFree(net);
return -1;
}
/* utility function to replace 'from' by 'to' in 'str' */
static char*
openvz_replace(const char* str,
const char* from,
const char* to) {
const char* offset = NULL;
const char* str_start = str;
int to_len;
int from_len;
virBuffer buf = VIR_BUFFER_INITIALIZER;
if ((!from) || (!to))
return NULL;
from_len = strlen(from);
to_len = strlen(to);
while((offset = strstr(str_start, from)))
{
virBufferAdd(&buf, str_start, offset-str_start);
virBufferAdd(&buf, to, to_len);
str_start = offset + from_len;
}
virBufferAdd(&buf, str_start, -1);
if (virBufferError(&buf)) {
virBufferFreeAndReset(&buf);
return NULL;
}
return virBufferContentAndReset(&buf);
}
static int
openvzReadFSConf(virDomainDefPtr def,
int veid) {
int ret;
virDomainFSDefPtr fs = NULL;
char* veid_str = NULL;
char temp[100];
ret = openvzReadVPSConfigParam(veid, "OSTEMPLATE", temp, sizeof(temp));
if (ret < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not read 'OSTEMPLATE' from config for container %d"),
veid);
goto error;
} else if (ret > 0) {
if (VIR_ALLOC(fs) < 0)
goto no_memory;
fs->type = VIR_DOMAIN_FS_TYPE_TEMPLATE;
fs->src = strdup(temp);
} else {
/* OSTEMPLATE was not found, VE was booted from a private dir directly */
ret = openvzReadVPSConfigParam(veid, "VE_PRIVATE", temp, sizeof(temp));
if (ret <= 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not read 'VE_PRIVATE' from config for container %d"),
veid);
goto error;
}
if (VIR_ALLOC(fs) < 0)
goto no_memory;
if (virAsprintf(&veid_str, "%d", veid) < 0)
goto no_memory;
fs->type = VIR_DOMAIN_FS_TYPE_MOUNT;
fs->src = openvz_replace(temp, "$VEID", veid_str);
VIR_FREE(veid_str);
}
fs->dst = strdup("/");
if (fs->src == NULL || fs->dst == NULL)
goto no_memory;
if (VIR_REALLOC_N(def->fss, def->nfss + 1) < 0)
goto no_memory;
def->fss[def->nfss++] = fs;
fs = NULL;
return 0;
no_memory:
virReportOOMError();
error:
virDomainFSDefFree(fs);
return -1;
}
/* Free all memory associated with a openvz_driver structure */
void
openvzFreeDriver(struct openvz_driver *driver)
{
if (!driver)
return;
virDomainObjListDeinit(&driver->domains);
virCapabilitiesFree(driver->caps);
VIR_FREE(driver);
}
int openvzLoadDomains(struct openvz_driver *driver) {
FILE *fp;
int veid, ret;
char status[16];
char uuidstr[VIR_UUID_STRING_BUFLEN];
virDomainObjPtr dom = NULL;
char temp[50];
if (openvzAssignUUIDs() < 0)
return -1;
if ((fp = popen(VZLIST " -a -ovpsid,status -H 2>/dev/null", "r")) == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s", _("popen failed"));
return -1;
}
while(!feof(fp)) {
if (fscanf(fp, "%d %s\n", &veid, status) != 2) {
if (feof(fp))
break;
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to parse vzlist output"));
goto cleanup;
}
if (VIR_ALLOC(dom) < 0)
goto no_memory;
if (virMutexInit(&dom->lock) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot initialize mutex"));
VIR_FREE(dom);
goto cleanup;
}
virDomainObjLock(dom);
if (VIR_ALLOC(dom->def) < 0)
goto no_memory;
if (STREQ(status, "stopped"))
dom->state = VIR_DOMAIN_SHUTOFF;
else
dom->state = VIR_DOMAIN_RUNNING;
dom->refs = 1;
dom->pid = veid;
dom->def->id = dom->state == VIR_DOMAIN_SHUTOFF ? -1 : veid;
/* XXX OpenVZ doesn't appear to have concept of a transient domain */
dom->persistent = 1;
if (virAsprintf(&dom->def->name, "%i", veid) < 0)
goto no_memory;
openvzGetVPSUUID(veid, uuidstr, sizeof(uuidstr));
ret = virUUIDParse(uuidstr, dom->def->uuid);
if (ret == -1) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("UUID in config file malformed"));
goto cleanup;
}
if (!(dom->def->os.type = strdup("exe")))
goto no_memory;
if (!(dom->def->os.init = strdup("/sbin/init")))
goto no_memory;
ret = openvzReadVPSConfigParam(veid, "CPUS", temp, sizeof(temp));
if (ret < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR,
_("Could not read config for container %d"),
veid);
goto cleanup;
} else if (ret > 0) {
dom->def->vcpus = strtoI(temp);
}
if (ret == 0 || dom->def->vcpus == 0)
dom->def->vcpus = openvzGetNodeCPUs();
/* XXX load rest of VM config data .... */
openvzReadNetworkConf(dom->def, veid);
openvzReadFSConf(dom->def, veid);
virUUIDFormat(dom->def->uuid, uuidstr);
if (virHashAddEntry(driver->domains.objs, uuidstr, dom) < 0)
goto no_memory;
virDomainObjUnlock(dom);
dom = NULL;
}
fclose(fp);
return 0;
no_memory:
virReportOOMError();
cleanup:
fclose(fp);
if (dom)
virDomainObjUnref(dom);
return -1;
}
unsigned int
openvzGetNodeCPUs(void)
{
virNodeInfo nodeinfo;
if (nodeGetInfo(NULL, &nodeinfo) < 0)
return 0;
return nodeinfo.cpus;
}
static int
openvzWriteConfigParam(const char * conf_file, const char *param, const char *value)
{
char * temp_file = NULL;
int fd = -1, temp_fd = -1;
char line[PATH_MAX] ;
if (virAsprintf(&temp_file, "%s.tmp", conf_file)<0) {
virReportOOMError();
return -1;
}
fd = open(conf_file, O_RDONLY);
if (fd == -1)
goto error;
temp_fd = open(temp_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (temp_fd == -1) {
close(fd);
goto error;
}
while(1) {
if (openvz_readline(fd, line, sizeof(line)) <= 0)
break;
if (!(STRPREFIX(line, param) && line[strlen(param)] == '=')) {
if (safewrite(temp_fd, line, strlen(line)) !=
strlen(line))
goto error;
}
}
if (safewrite(temp_fd, param, strlen(param)) < 0 ||
safewrite(temp_fd, "=\"", 2) < 0 ||
safewrite(temp_fd, value, strlen(value)) < 0 ||
safewrite(temp_fd, "\"\n", 2) < 0)
goto error;
if (close(fd) < 0)
goto error;
fd = -1;
if (close(temp_fd) < 0)
goto error;
temp_fd = -1;
if (rename(temp_file, conf_file) < 0)
goto error;
return 0;
error:
if (fd != -1)
close(fd);
if (temp_fd != -1)
close(temp_fd);
if(temp_file)
unlink(temp_file);
VIR_FREE(temp_file);
return -1;
}
int
openvzWriteVPSConfigParam(int vpsid, const char *param, const char *value)
{
char conf_file[PATH_MAX];
if (openvzLocateConfFile(vpsid, conf_file, PATH_MAX, "conf")<0)
return -1;
return openvzWriteConfigParam(conf_file, param, value);
}
static int
openvzReadConfigParam(const char * conf_file ,const char * param, char *value, int maxlen)
{
char line[PATH_MAX] ;
int ret, found = 0;
int fd ;
char * sf, * token;
char *saveptr = NULL;
value[0] = 0;
fd = open(conf_file, O_RDONLY);
if (fd == -1)
return -1;
while(1) {
ret = openvz_readline(fd, line, sizeof(line));
if(ret <= 0)
break;
saveptr = NULL;
if (STREQLEN(line, param, strlen(param))) {
sf = line;
sf += strlen(param);
if (sf[0] == '=' && sf[1] != '\0' ) {
sf ++;
if ((token = strtok_r(sf,"\"\t\n", &saveptr)) != NULL) {
if (virStrcpy(value, token, maxlen) == NULL) {
ret = -1;
break;
}
found = 1;
}
}
}
}
close(fd);
if (ret == 0 && found)
ret = 1;
return ret ;
}
/*
* Read parameter from container config
* sample: 133, "OSTEMPLATE", value, 1024
* return: -1 - error
* 0 - don't found
* 1 - OK
*/
int
openvzReadVPSConfigParam(int vpsid ,const char * param, char *value, int maxlen)
{
char conf_file[PATH_MAX] ;
if (openvzLocateConfFile(vpsid, conf_file, PATH_MAX, "conf")<0)
return -1;
return openvzReadConfigParam(conf_file, param, value, maxlen);
}
static int
openvz_copyfile(char* from_path, char* to_path)
{
char line[PATH_MAX];
int fd, copy_fd;
int bytes_read;
fd = open(from_path, O_RDONLY);
if (fd == -1)
return -1;
copy_fd = open(to_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (copy_fd == -1) {
close(fd);
return -1;
}
while(1) {
if (openvz_readline(fd, line, sizeof(line)) <= 0)
break;
bytes_read = strlen(line);
if (safewrite(copy_fd, line, bytes_read) != bytes_read)
goto error;
}
if (close(fd) < 0)
goto error;
fd = -1;
if (close(copy_fd) < 0)
goto error;
return 0;
error:
if (fd != -1)
close(fd);
if (copy_fd != -1)
close(copy_fd);
return -1;
}
/*
* Copy the default config to the VE conf file
* return: -1 - error
* 0 - OK
*/
int
openvzCopyDefaultConfig(int vpsid)
{
char * confdir = NULL;
char * default_conf_file = NULL;
char configfile_value[PATH_MAX];
char conf_file[PATH_MAX];
int ret = -1;
if(openvzReadConfigParam(VZ_CONF_FILE, "CONFIGFILE", configfile_value, PATH_MAX) < 0)
goto cleanup;
confdir = openvzLocateConfDir();
if (confdir == NULL)
goto cleanup;
if (virAsprintf(&default_conf_file, "%s/ve-%s.conf-sample", confdir, configfile_value) < 0) {
virReportOOMError();
goto cleanup;
}
if (openvzLocateConfFile(vpsid, conf_file, PATH_MAX, "conf")<0)
goto cleanup;
if (openvz_copyfile(default_conf_file, conf_file)<0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(confdir);
VIR_FREE(default_conf_file);
return ret;
}
/* Locate config file of container
* return -1 - error
* 0 - OK
*/
static int
openvzLocateConfFile(int vpsid, char *conffile, int maxlen, const char *ext)
{
char * confdir;
int ret = 0;
confdir = openvzLocateConfDir();
if (confdir == NULL)
return -1;
if (snprintf(conffile, maxlen, "%s/%d.%s",
confdir, vpsid, ext ? ext : "conf") >= maxlen)
ret = -1;
VIR_FREE(confdir);
return ret;
}
static char
*openvzLocateConfDir(void)
{
const char *conf_dir_list[] = {"/etc/vz/conf", "/usr/local/etc/conf", NULL};
int i=0;
while(conf_dir_list[i]) {
if(!access(conf_dir_list[i], F_OK))
return strdup(conf_dir_list[i]);
i ++;
}
return NULL;
}
/* Richard Steven's classic readline() function */
int
openvz_readline(int fd, char *ptr, int maxlen)
{
int n, rc;
char c;
for(n = 1; n < maxlen; n ++) {
if( (rc = read(fd, &c, 1)) == 1) {
*ptr++ = c;
if(c == '\n')
break;
}
else if(rc == 0) {
if(n == 1)
return 0; /* EOF condition */
else
break;
}
else
return -1; /* error */
}
*ptr = 0;
return n;
}
static int
openvzGetVPSUUID(int vpsid, char *uuidstr, size_t len)
{
char conf_file[PATH_MAX];
char line[1024];
char *saveptr = NULL;
char *uuidbuf;
char *iden;
int fd, ret;
int retval = 0;
if (openvzLocateConfFile(vpsid, conf_file, PATH_MAX, "conf")<0)
return -1;
fd = open(conf_file, O_RDONLY);
if(fd == -1)
return -1;
while(1) {
ret = openvz_readline(fd, line, sizeof(line));
if(ret == -1) {
close(fd);
return -1;
}
if(ret == 0) { /* EoF, UUID was not found */
uuidstr[0] = 0;
break;
}
iden = strtok_r(line, " ", &saveptr);
uuidbuf = strtok_r(NULL, "\n", &saveptr);
if (iden != NULL && uuidbuf != NULL && STREQ(iden, "#UUID:")) {
if (virStrcpy(uuidstr, uuidbuf, len) == NULL)
retval = -1;
break;
}
}
close(fd);
return retval;
}
/* Do actual checking for UUID presence in conf file,
* assign if not present.
*/
int
openvzSetDefinedUUID(int vpsid, unsigned char *uuid)
{
char conf_file[PATH_MAX];
char uuidstr[VIR_UUID_STRING_BUFLEN];
if (uuid == NULL)
return -1;
if (openvzLocateConfFile(vpsid, conf_file, PATH_MAX, "conf")<0)
return -1;
if (openvzGetVPSUUID(vpsid, uuidstr, sizeof(uuidstr)))
return -1;
if (uuidstr[0] == 0) {
FILE *fp = fopen(conf_file, "a"); /* append */
if (fp == NULL)
return -1;
virUUIDFormat(uuid, uuidstr);
/* Record failure if fprintf or fclose fails,
and be careful always to close the stream. */
if ((fprintf(fp, "\n#UUID: %s\n", uuidstr) < 0)
+ (fclose(fp) == EOF))
return -1;
}
return 0;
}
static int
openvzSetUUID(int vpsid){
unsigned char uuid[VIR_UUID_BUFLEN];
if (virUUIDGenerate(uuid)) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to generate UUID"));
return -1;
}
return openvzSetDefinedUUID(vpsid, uuid);
}
/*
* Scan VPS config files and see if they have a UUID.
* If not, assign one. Just append one to the config
* file as comment so that the OpenVZ tools ignore it.
*
*/
static int openvzAssignUUIDs(void)
{
DIR *dp;
struct dirent *dent;
char *conf_dir;
int vpsid, res;
char ext[8];
conf_dir = openvzLocateConfDir();
if (conf_dir == NULL)
return -1;
dp = opendir(conf_dir);
if(dp == NULL) {
VIR_FREE(conf_dir);
return 0;
}
while((dent = readdir(dp))) {
res = sscanf(dent->d_name, "%d.%5s", &vpsid, ext);
if(!(res == 2 && STREQ(ext, "conf")))
continue;
if(vpsid > 0) /* '0.conf' belongs to the host, ignore it */
openvzSetUUID(vpsid);
}
closedir(dp);
VIR_FREE(conf_dir);
return 0;
}
/*
* Return CTID from name
*
*/
int openvzGetVEID(const char *name) {
char *cmd;
int veid;
FILE *fp;
bool ok;
if (virAsprintf(&cmd, "%s %s -ovpsid -H", VZLIST, name) < 0) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("virAsprintf failed"));
return -1;
}
fp = popen(cmd, "r");
VIR_FREE(cmd);
if (fp == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s", _("popen failed"));
return -1;
}
ok = fscanf(fp, "%d\n", &veid ) == 1;
fclose(fp);
if (ok && veid >= 0)
return veid;
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to parse vzlist output"));
return -1;
}
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