/**
* virStorageBackendZFSVolModeNeeded:
*
* Checks if it's necessary to specify 'volmode' (i.e. that
* we're working with BSD ZFS implementation).
*
* Returns 1 if 'volmode' is need, 0 if not needed, -1 on error
*/
static int
virStorageBackendZFSVolModeNeeded(void)
{
virCommandPtr cmd = NULL;
int ret = -1, exit = -1;
char *error = NULL;
/* 'zfs get' without arguments prints out
* usage information to stderr, including
* list of supported options, and exits with
* exit code 2
*/
cmd = virCommandNewArgList(ZFS, "get", NULL);
virCommandAddEnvString(cmd, "LC_ALL=C");
virCommandSetErrorBuffer(cmd, &error);
ret = virCommandRun(cmd, &exit);
if ((ret < 0) || (exit != 2)) {
VIR_WARN("Command 'zfs get' either failed "
"to run or exited with unexpected status");
goto cleanup;
}
if (strstr(error, " volmode "))
ret = 1;
else
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FREE(error);
return ret;
}
/**
* lxcContainerBuildInitCmd:
* @vmDef: pointer to vm definition structure
*
* Build a virCommandPtr for launching the container 'init' process
*
* Returns a virCommandPtr
*/
static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
virCommandPtr cmd;
virUUIDFormat(vmDef->uuid, uuidstr);
cmd = virCommandNew(vmDef->os.init);
virCommandAddEnvString(cmd, "PATH=/bin:/sbin");
virCommandAddEnvString(cmd, "TERM=linux");
virCommandAddEnvString(cmd, "container=lxc-libvirt");
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_UUID", uuidstr);
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_NAME", vmDef->name);
if (vmDef->os.cmdline)
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_CMDLINE", vmDef->os.cmdline);
return cmd;
}
static int
openvzExtractVersionInfo(const char *cmdstr, int *retversion)
{
int ret = -1;
unsigned long version;
char *help = NULL;
char *tmp;
virCommandPtr cmd = virCommandNewArgList(cmdstr, "--help", NULL);
if (retversion)
*retversion = 0;
virCommandAddEnvString(cmd, "LC_ALL=C");
virCommandSetOutputBuffer(cmd, &help);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
tmp = help;
/* expected format: vzctl version <major>.<minor>.<micro> */
if ((tmp = STRSKIP(tmp, "vzctl version ")) == NULL)
goto cleanup;
if (virParseVersionString(tmp, &version, true) < 0)
goto cleanup;
if (retversion)
*retversion = version;
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FREE(help);
return ret;
}
