/* This method shouldn't raise errors, since they'll overwrite
* errors that the caller(s) are already dealing with */
static int
SELinuxRestoreSecurityFileLabel(const char *path)
{
struct stat buf;
security_context_t fcon = NULL;
int rc = -1;
char *newpath = NULL;
char ebuf[1024];
VIR_INFO("Restoring SELinux context on '%s'", path);
if (virFileResolveLink(path, &newpath) < 0) {
VIR_WARN("cannot resolve symlink %s: %s", path,
virStrerror(errno, ebuf, sizeof(ebuf)));
goto err;
}
if (stat(newpath, &buf) != 0) {
VIR_WARN("cannot stat %s: %s", newpath,
virStrerror(errno, ebuf, sizeof(ebuf)));
goto err;
}
if (getContext(newpath, buf.st_mode, &fcon) < 0) {
VIR_WARN("cannot lookup default selinux label for %s", newpath);
} else {
rc = SELinuxSetFilecon(newpath, fcon);
}
err:
freecon(fcon);
VIR_FREE(newpath);
return rc;
}
static void virLockSpaceResourceFree(virLockSpaceResourcePtr res)
{
if (!res)
return;
if (res->lockHeld &&
(res->flags & VIR_LOCK_SPACE_ACQUIRE_AUTOCREATE)) {
if (res->flags & VIR_LOCK_SPACE_ACQUIRE_SHARED) {
/* We must upgrade to an exclusive lock to ensure
* no one else still has it before trying to delete */
if (virFileLock(res->fd, false, 0, 1) < 0) {
VIR_DEBUG("Could not upgrade shared lease to exclusive, not deleting");
} else {
if (unlink(res->path) < 0 &&
errno != ENOENT) {
char ebuf[1024];
VIR_WARN("Failed to unlink resource %s: %s",
res->path, virStrerror(errno, ebuf, sizeof(ebuf)));
}
}
} else {
if (unlink(res->path) < 0 &&
errno != ENOENT) {
char ebuf[1024];
VIR_WARN("Failed to unlink resource %s: %s",
res->path, virStrerror(errno, ebuf, sizeof(ebuf)));
}
}
}
VIR_FORCE_CLOSE(res->fd);
VIR_FREE(res->path);
VIR_FREE(res->name);
VIR_FREE(res);
}
int virFileClose(int *fdptr, virFileCloseFlags flags)
{
int saved_errno = 0;
int rc = 0;
if (*fdptr < 0)
return 0;
if (flags & VIR_FILE_CLOSE_PRESERVE_ERRNO)
saved_errno = errno;
rc = close(*fdptr);
if (!(flags & VIR_FILE_CLOSE_DONT_LOG)) {
if (rc < 0) {
if (errno == EBADF) {
if (!(flags & VIR_FILE_CLOSE_IGNORE_EBADF))
VIR_WARN("Tried to close invalid fd %d", *fdptr);
} else {
char ebuf[1024] ATTRIBUTE_UNUSED;
VIR_DEBUG("Failed to close fd %d: %s",
*fdptr, virStrerror(errno, ebuf, sizeof(ebuf)));
}
} else {
VIR_DEBUG("Closed fd %d", *fdptr);
}
}
/*
* Call after adding all arguments and environment settings, but before
* Run/RunAsync, to immediately output the environment and arguments of
* cmd to logfd. If virCommandRun cannot succeed (because of an
* out-of-memory condition while building cmd), nothing will be logged.
*/
void
virCommandWriteArgLog(virCommandPtr cmd, int logfd)
{
int ioError = 0;
size_t i;
/* Any errors will be reported later by virCommandRun, which means
* no command will be run, so there is nothing to log. */
if (!cmd || cmd->has_error)
return;
for (i = 0 ; i < cmd->nenv ; i++) {
if (safewrite(logfd, cmd->env[i], strlen(cmd->env[i])) < 0)
ioError = errno;
if (safewrite(logfd, " ", 1) < 0)
ioError = errno;
}
for (i = 0 ; i < cmd->nargs ; i++) {
if (safewrite(logfd, cmd->args[i], strlen(cmd->args[i])) < 0)
ioError = errno;
if (safewrite(logfd, i == cmd->nargs - 1 ? "\n" : " ", 1) < 0)
ioError = errno;
}
if (ioError) {
char ebuf[1024];
VIR_WARN("Unable to write command %s args to logfile: %s",
cmd->args[0], virStrerror(ioError, ebuf, sizeof ebuf));
}
}
static int get_sriov_function(const char *device_link,
struct pci_config_address **bdf)
{
char *config_address = NULL;
char *device_path = NULL;
char errbuf[64];
int ret = SRIOV_ERROR;
VIR_DEBUG("Attempting to resolve device path from device link '%s'",
device_link);
if (!virFileExists(device_link)) {
VIR_DEBUG("SR IOV function link '%s' does not exist", device_link);
/* Not an SR IOV device, not an error, either. */
ret = SRIOV_NOT_FOUND;
goto out;
}
device_path = canonicalize_file_name (device_link);
if (device_path == NULL) {
memset(errbuf, '\0', sizeof(errbuf));
VIR_ERROR(_("Failed to resolve device link '%s': '%s'"), device_link,
virStrerror(errno, errbuf, sizeof(errbuf)));
goto out;
}
VIR_DEBUG("SR IOV device path is '%s'", device_path);
config_address = basename(device_path);
if (VIR_ALLOC(*bdf) != 0) {
VIR_ERROR0(_("Failed to allocate memory for PCI device name"));
goto out;
}
if (parse_pci_config_address(config_address, *bdf) != 0) {
VIR_ERROR(_("Failed to parse PCI config address '%s'"), config_address);
goto out;
}
VIR_DEBUG("SR IOV function %.4x:%.2x:%.2x.%.1x",
(*bdf)->domain,
(*bdf)->bus,
(*bdf)->slot,
(*bdf)->function);
ret = SRIOV_FOUND;
out:
VIR_FREE(device_path);
return ret;
}
static int
pciWrite(pciDevice *dev, unsigned pos, uint8_t *buf, unsigned buflen)
{
if (pciOpenConfig(dev) < 0)
return -1;
if (lseek(dev->fd, pos, SEEK_SET) != pos ||
safewrite(dev->fd, buf, buflen) != buflen) {
char ebuf[1024];
VIR_WARN("Failed to write to '%s' : %s", dev->path,
virStrerror(errno, ebuf, sizeof(ebuf)));
return -1;
}
return 0;
}
static void
lxcProcessRemoveDomainStatus(virLXCDriverConfigPtr cfg,
virDomainObjPtr vm)
{
char ebuf[1024];
char *file = NULL;
if (virAsprintf(&file, "%s/%s.xml", cfg->stateDir, vm->def->name) < 0)
return;
if (unlink(file) < 0 && errno != ENOENT && errno != ENOTDIR)
VIR_WARN("Failed to remove domain XML for %s: %s",
vm->def->name, virStrerror(errno, ebuf, sizeof(ebuf)));
VIR_FREE(file);
}
/**
* virUUIDGenerate:
* @uuid: array of VIR_UUID_BUFLEN bytes to store the new UUID
*
* Generates a randomized unique identifier.
*
* Returns 0 in case of success and -1 in case of failure
*/
int
virUUIDGenerate(unsigned char *uuid)
{
int err;
if (uuid == NULL)
return(-1);
if ((err = virUUIDGenerateRandomBytes(uuid, VIR_UUID_BUFLEN))) {
char ebuf[1024];
VIR_WARN("Falling back to pseudorandom UUID,"
" failed to generate random bytes: %s",
virStrerror(err, ebuf, sizeof ebuf));
err = virUUIDGeneratePseudoRandomBytes(uuid, VIR_UUID_BUFLEN);
}
return(err);
}
static int
pciOpenConfig(pciDevice *dev)
{
int fd;
if (dev->fd > 0)
return 0;
fd = open(dev->path, O_RDWR);
if (fd < 0) {
char ebuf[1024];
VIR_WARN("Failed to open config space file '%s': %s",
dev->path, virStrerror(errno, ebuf, sizeof(ebuf)));
return -1;
}
VIR_DEBUG("%s %s: opened %s", dev->id, dev->name, dev->path);
dev->fd = fd;
return 0;
}
/**
* virUUIDGenerate:
* @uuid: array of VIR_UUID_BUFLEN bytes to store the new UUID
*
* Generates a randomized unique identifier.
*
* Returns 0 in case of success and -1 in case of failure
*/
int
virUUIDGenerate(unsigned char *uuid)
{
int err;
if (uuid == NULL)
return -1;
if ((err = virUUIDGenerateRandomBytes(uuid, VIR_UUID_BUFLEN))) {
char ebuf[1024];
VIR_WARN("Falling back to pseudorandom UUID,"
" failed to generate random bytes: %s",
virStrerror(err, ebuf, sizeof(ebuf)));
err = virUUIDGeneratePseudoRandomBytes(uuid, VIR_UUID_BUFLEN);
}
/*
* Make UUID RFC 4122 compliant. Following form will be used:
*
* xxxxxxxx-xxxx-Axxx-Bxxx-xxxxxxxxxxxx
*
* where
* A is version defined in 4.1.3 of RFC
* Msb0 Msb1 Msb2 Msb3 Version Description
* 0 1 0 0 4 The randomly or pseudo-
* randomly generated version
* specified in this document.
*
* B is variant defined in 4.1.1 of RFC
* Msb0 Msb1 Msb2 Description
* 1 0 x The variant specified in this document.
*/
uuid[6] = (uuid[6] & 0x0F) | (4 << 4);
uuid[8] = (uuid[8] & 0x3F) | (2 << 6);
return err;
}
static int daemonForkIntoBackground(const char *argv0)
{
int statuspipe[2];
if (pipe(statuspipe) < 0)
return -1;
pid_t pid = fork();
switch (pid) {
case 0:
{
/* intermediate child */
int stdinfd = -1;
int stdoutfd = -1;
int nextpid;
VIR_FORCE_CLOSE(statuspipe[0]);
if ((stdinfd = open("/dev/null", O_RDONLY)) < 0)
goto cleanup;
if ((stdoutfd = open("/dev/null", O_WRONLY)) < 0)
goto cleanup;
if (dup2(stdinfd, STDIN_FILENO) != STDIN_FILENO)
goto cleanup;
if (dup2(stdoutfd, STDOUT_FILENO) != STDOUT_FILENO)
goto cleanup;
if (dup2(stdoutfd, STDERR_FILENO) != STDERR_FILENO)
goto cleanup;
if (stdinfd > STDERR_FILENO && VIR_CLOSE(stdinfd) < 0)
goto cleanup;
if (stdoutfd > STDERR_FILENO && VIR_CLOSE(stdoutfd) < 0)
goto cleanup;
if (setsid() < 0)
goto cleanup;
nextpid = fork();
switch (nextpid) {
case 0: /* grandchild */
return statuspipe[1];
case -1: /* error */
goto cleanup;
default: /* intermediate child succeeded */
_exit(EXIT_SUCCESS);
}
cleanup:
VIR_FORCE_CLOSE(stdoutfd);
VIR_FORCE_CLOSE(stdinfd);
VIR_FORCE_CLOSE(statuspipe[1]);
_exit(EXIT_FAILURE);
}
case -1: /* error in parent */
goto error;
default:
{
/* parent */
int ret;
char status;
VIR_FORCE_CLOSE(statuspipe[1]);
/* We wait to make sure the first child forked successfully */
if (virPidWait(pid, NULL) < 0)
goto error;
/* If we get here, then the grandchild was spawned, so we
* must exit. Block until the second child initializes
* successfully */
again:
ret = read(statuspipe[0], &status, 1);
if (ret == -1 && errno == EINTR)
goto again;
VIR_FORCE_CLOSE(statuspipe[0]);
if (ret != 1) {
char ebuf[1024];
fprintf(stderr,
_("%s: error: unable to determine if daemon is "
"running: %s\n"), argv0,
virStrerror(errno, ebuf, sizeof(ebuf)));
exit(EXIT_FAILURE);
} else if (status != 0) {
fprintf(stderr,
_("%s: error: %s. Check /var/log/messages or run "
"without --daemon for more info.\n"), argv0,
virDaemonErrTypeToString(status));
exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
}
}
error:
VIR_FORCE_CLOSE(statuspipe[0]);
VIR_FORCE_CLOSE(statuspipe[1]);
return -1;
}
/**
* virLXCProcessStart:
* @conn: pointer to connection
* @driver: pointer to driver structure
* @vm: pointer to virtual machine structure
* @autoDestroy: mark the domain for auto destruction
* @reason: reason for switching vm to running state
*
* Starts a vm
*
* Returns 0 on success or -1 in case of error
*/
int virLXCProcessStart(virConnectPtr conn,
virLXCDriverPtr driver,
virDomainObjPtr vm,
unsigned int nfiles, int *files,
bool autoDestroy,
virDomainRunningReason reason)
{
int rc = -1, r;
size_t nttyFDs = 0;
int *ttyFDs = NULL;
size_t i;
char *logfile = NULL;
int logfd = -1;
size_t nveths = 0;
char **veths = NULL;
int handshakefds[2] = { -1, -1 };
off_t pos = -1;
char ebuf[1024];
char *timestamp;
virCommandPtr cmd = NULL;
virLXCDomainObjPrivatePtr priv = vm->privateData;
virCapsPtr caps = NULL;
virErrorPtr err = NULL;
virLXCDriverConfigPtr cfg = virLXCDriverGetConfig(driver);
virCgroupPtr selfcgroup;
int status;
if (virCgroupNewSelf(&selfcgroup) < 0)
return -1;
if (!virCgroupHasController(selfcgroup,
VIR_CGROUP_CONTROLLER_CPUACCT)) {
virCgroupFree(&selfcgroup);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to find 'cpuacct' cgroups controller mount"));
return -1;
}
if (!virCgroupHasController(selfcgroup,
VIR_CGROUP_CONTROLLER_DEVICES)) {
virCgroupFree(&selfcgroup);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to find 'devices' cgroups controller mount"));
return -1;
}
if (!virCgroupHasController(selfcgroup,
VIR_CGROUP_CONTROLLER_MEMORY)) {
virCgroupFree(&selfcgroup);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to find 'memory' cgroups controller mount"));
return -1;
}
virCgroupFree(&selfcgroup);
if (virFileMakePath(cfg->logDir) < 0) {
virReportSystemError(errno,
_("Cannot create log directory '%s'"),
cfg->logDir);
return -1;
}
if (!vm->def->resource) {
virDomainResourceDefPtr res;
if (VIR_ALLOC(res) < 0)
goto cleanup;
if (VIR_STRDUP(res->partition, "/machine") < 0) {
VIR_FREE(res);
goto cleanup;
}
vm->def->resource = res;
}
if (virAsprintf(&logfile, "%s/%s.log",
cfg->logDir, vm->def->name) < 0)
return -1;
if (!(caps = virLXCDriverGetCapabilities(driver, false)))
goto cleanup;
/* Do this up front, so any part of the startup process can add
* runtime state to vm->def that won't be persisted. This let's us
* report implicit runtime defaults in the XML, like vnc listen/socket
*/
VIR_DEBUG("Setting current domain def as transient");
if (virDomainObjSetDefTransient(caps, driver->xmlopt, vm, true) < 0)
goto cleanup;
/* Run an early hook to set-up missing devices */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_PREPARE, VIR_HOOK_SUBOP_BEGIN,
NULL, xml, NULL);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto cleanup;
}
if (virLXCProcessEnsureRootFS(vm) < 0)
goto cleanup;
/* Must be run before security labelling */
VIR_DEBUG("Preparing host devices");
if (virLXCPrepareHostDevices(driver, vm->def) < 0)
goto cleanup;
/* Here we open all the PTYs we need on the host OS side.
* The LXC controller will open the guest OS side PTYs
* and forward I/O between them.
*/
nttyFDs = vm->def->nconsoles;
if (VIR_ALLOC_N(ttyFDs, nttyFDs) < 0)
goto cleanup;
for (i = 0; i < vm->def->nconsoles; i++)
ttyFDs[i] = -1;
/* If you are using a SecurityDriver with dynamic labelling,
then generate a security label for isolation */
VIR_DEBUG("Generating domain security label (if required)");
if (vm->def->nseclabels &&
vm->def->seclabels[0]->type == VIR_DOMAIN_SECLABEL_DEFAULT)
vm->def->seclabels[0]->type = VIR_DOMAIN_SECLABEL_NONE;
if (virSecurityManagerGenLabel(driver->securityManager, vm->def) < 0) {
virDomainAuditSecurityLabel(vm, false);
goto cleanup;
}
virDomainAuditSecurityLabel(vm, true);
VIR_DEBUG("Setting domain security labels");
if (virSecurityManagerSetAllLabel(driver->securityManager,
vm->def, NULL) < 0)
goto cleanup;
for (i = 0; i < vm->def->nconsoles; i++) {
char *ttyPath;
if (vm->def->consoles[i]->source.type != VIR_DOMAIN_CHR_TYPE_PTY) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Only PTY console types are supported"));
goto cleanup;
}
if (virFileOpenTty(&ttyFDs[i], &ttyPath, 1) < 0) {
virReportSystemError(errno, "%s",
_("Failed to allocate tty"));
goto cleanup;
}
VIR_FREE(vm->def->consoles[i]->source.data.file.path);
vm->def->consoles[i]->source.data.file.path = ttyPath;
VIR_FREE(vm->def->consoles[i]->info.alias);
if (virAsprintf(&vm->def->consoles[i]->info.alias, "console%zu", i) < 0)
goto cleanup;
}
if (virLXCProcessSetupInterfaces(conn, vm->def, &nveths, &veths) < 0)
goto cleanup;
/* Save the configuration for the controller */
if (virDomainSaveConfig(cfg->stateDir, vm->def) < 0)
goto cleanup;
if ((logfd = open(logfile, O_WRONLY | O_APPEND | O_CREAT,
S_IRUSR|S_IWUSR)) < 0) {
virReportSystemError(errno,
_("Failed to open '%s'"),
logfile);
goto cleanup;
}
if (pipe(handshakefds) < 0) {
virReportSystemError(errno, "%s",
_("Unable to create pipe"));
goto cleanup;
}
if (!(cmd = virLXCProcessBuildControllerCmd(driver,
vm,
nveths, veths,
ttyFDs, nttyFDs,
files, nfiles,
handshakefds[1])))
goto cleanup;
virCommandSetOutputFD(cmd, &logfd);
virCommandSetErrorFD(cmd, &logfd);
/* now that we know it is about to start call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_START, VIR_HOOK_SUBOP_BEGIN,
NULL, xml, NULL);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto cleanup;
}
/* Log timestamp */
if ((timestamp = virTimeStringNow()) == NULL)
goto cleanup;
if (safewrite(logfd, timestamp, strlen(timestamp)) < 0 ||
safewrite(logfd, START_POSTFIX, strlen(START_POSTFIX)) < 0) {
VIR_WARN("Unable to write timestamp to logfile: %s",
virStrerror(errno, ebuf, sizeof(ebuf)));
}
VIR_FREE(timestamp);
/* Log generated command line */
virCommandWriteArgLog(cmd, logfd);
if ((pos = lseek(logfd, 0, SEEK_END)) < 0)
VIR_WARN("Unable to seek to end of logfile: %s",
virStrerror(errno, ebuf, sizeof(ebuf)));
virCommandRawStatus(cmd);
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
if (status != 0) {
if (virLXCProcessReadLogOutput(vm, logfile, pos, ebuf,
sizeof(ebuf)) <= 0) {
if (WIFEXITED(status))
snprintf(ebuf, sizeof(ebuf), _("unexpected exit status %d"),
WEXITSTATUS(status));
else
snprintf(ebuf, sizeof(ebuf), "%s", _("terminated abnormally"));
}
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), ebuf);
goto cleanup;
}
if (VIR_CLOSE(handshakefds[1]) < 0) {
virReportSystemError(errno, "%s", _("could not close handshake fd"));
goto cleanup;
}
/* Connect to the controller as a client *first* because
* this will block until the child has written their
* pid file out to disk & created their cgroup */
if (!(priv->monitor = virLXCProcessConnectMonitor(driver, vm))) {
/* Intentionally overwrite the real monitor error message,
* since a better one is almost always found in the logs
*/
if (virLXCProcessReadLogOutput(vm, logfile, pos, ebuf, sizeof(ebuf)) > 0) {
virResetLastError();
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), ebuf);
}
goto cleanup;
}
/* And get its pid */
if ((r = virPidFileRead(cfg->stateDir, vm->def->name, &vm->pid)) < 0) {
if (virLXCProcessReadLogOutput(vm, logfile, pos, ebuf, sizeof(ebuf)) > 0)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), ebuf);
else
virReportSystemError(-r,
_("Failed to read pid file %s/%s.pid"),
cfg->stateDir, vm->def->name);
goto cleanup;
}
if (virCgroupNewDetectMachine(vm->def->name, "lxc", vm->pid,
vm->def->resource ?
vm->def->resource->partition :
NULL,
-1, &priv->cgroup) < 0)
goto error;
if (!priv->cgroup) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No valid cgroup for machine %s"),
vm->def->name);
goto error;
}
priv->stopReason = VIR_DOMAIN_EVENT_STOPPED_FAILED;
priv->wantReboot = false;
vm->def->id = vm->pid;
virDomainObjSetState(vm, VIR_DOMAIN_RUNNING, reason);
priv->doneStopEvent = false;
if (virAtomicIntInc(&driver->nactive) == 1 && driver->inhibitCallback)
driver->inhibitCallback(true, driver->inhibitOpaque);
if (lxcContainerWaitForContinue(handshakefds[0]) < 0) {
char out[1024];
if (!(virLXCProcessReadLogOutput(vm, logfile, pos, out, 1024) < 0)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), out);
}
goto error;
}
if (autoDestroy &&
virCloseCallbacksSet(driver->closeCallbacks, vm,
conn, lxcProcessAutoDestroy) < 0)
goto error;
if (virDomainObjSetDefTransient(caps, driver->xmlopt,
vm, false) < 0)
goto error;
/* Write domain status to disk.
*
* XXX: Earlier we wrote the plain "live" domain XML to this
* location for the benefit of libvirt_lxc. We're now overwriting
* it with the live status XML instead. This is a (currently
* harmless) inconsistency we should fix one day */
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0)
goto error;
/* finally we can call the 'started' hook script if any */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_STARTED, VIR_HOOK_SUBOP_BEGIN,
NULL, xml, NULL);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto error;
}
rc = 0;
cleanup:
if (rc != 0 && !err)
err = virSaveLastError();
virCommandFree(cmd);
if (VIR_CLOSE(logfd) < 0) {
virReportSystemError(errno, "%s", _("could not close logfile"));
rc = -1;
}
for (i = 0; i < nveths; i++) {
if (rc != 0 && veths[i])
ignore_value(virNetDevVethDelete(veths[i]));
VIR_FREE(veths[i]);
}
if (rc != 0) {
if (vm->newDef) {
virDomainDefFree(vm->newDef);
vm->newDef = NULL;
}
if (priv->monitor) {
virObjectUnref(priv->monitor);
priv->monitor = NULL;
}
virDomainConfVMNWFilterTeardown(vm);
virSecurityManagerRestoreAllLabel(driver->securityManager,
vm->def, false);
virSecurityManagerReleaseLabel(driver->securityManager, vm->def);
/* Clear out dynamically assigned labels */
if (vm->def->nseclabels &&
vm->def->seclabels[0]->type == VIR_DOMAIN_SECLABEL_DYNAMIC) {
VIR_FREE(vm->def->seclabels[0]->model);
VIR_FREE(vm->def->seclabels[0]->label);
VIR_FREE(vm->def->seclabels[0]->imagelabel);
}
}
for (i = 0; i < nttyFDs; i++)
VIR_FORCE_CLOSE(ttyFDs[i]);
VIR_FREE(ttyFDs);
VIR_FORCE_CLOSE(handshakefds[0]);
VIR_FORCE_CLOSE(handshakefds[1]);
VIR_FREE(logfile);
virObjectUnref(cfg);
virObjectUnref(caps);
if (err) {
virSetError(err);
virFreeError(err);
}
return rc;
error:
err = virSaveLastError();
virLXCProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED);
goto cleanup;
}
libxlDriverConfigPtr
libxlDriverConfigNew(void)
{
libxlDriverConfigPtr cfg;
char *log_file = NULL;
char ebuf[1024];
unsigned int free_mem;
if (libxlConfigInitialize() < 0)
return NULL;
if (!(cfg = virObjectNew(libxlDriverConfigClass)))
return NULL;
if (VIR_STRDUP(cfg->configDir, LIBXL_CONFIG_DIR) < 0)
goto error;
if (VIR_STRDUP(cfg->autostartDir, LIBXL_AUTOSTART_DIR) < 0)
goto error;
if (VIR_STRDUP(cfg->logDir, LIBXL_LOG_DIR) < 0)
goto error;
if (VIR_STRDUP(cfg->stateDir, LIBXL_STATE_DIR) < 0)
goto error;
if (VIR_STRDUP(cfg->libDir, LIBXL_LIB_DIR) < 0)
goto error;
if (VIR_STRDUP(cfg->saveDir, LIBXL_SAVE_DIR) < 0)
goto error;
if (VIR_STRDUP(cfg->autoDumpDir, LIBXL_DUMP_DIR) < 0)
goto error;
if (virAsprintf(&log_file, "%s/libxl-driver.log", cfg->logDir) < 0)
goto error;
if (virFileMakePath(cfg->logDir) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("failed to create log dir '%s': %s"),
cfg->logDir,
virStrerror(errno, ebuf, sizeof(ebuf)));
goto error;
}
if ((cfg->logger_file = fopen(log_file, "a")) == NULL) {
VIR_ERROR(_("Failed to create log file '%s': %s"),
log_file, virStrerror(errno, ebuf, sizeof(ebuf)));
goto error;
}
VIR_FREE(log_file);
cfg->logger =
(xentoollog_logger *)xtl_createlogger_stdiostream(cfg->logger_file,
XTL_DEBUG, 0);
if (!cfg->logger) {
VIR_ERROR(_("cannot create logger for libxenlight, disabling driver"));
goto error;
}
if (libxl_ctx_alloc(&cfg->ctx, LIBXL_VERSION, 0, cfg->logger)) {
VIR_ERROR(_("cannot initialize libxenlight context, probably not "
"running in a Xen Dom0, disabling driver"));
goto error;
}
if ((cfg->verInfo = libxl_get_version_info(cfg->ctx)) == NULL) {
VIR_ERROR(_("cannot version information from libxenlight, "
"disabling driver"));
goto error;
}
cfg->version = (cfg->verInfo->xen_version_major * 1000000) +
(cfg->verInfo->xen_version_minor * 1000);
/* This will fill xenstore info about free and dom0 memory if missing,
* should be called before starting first domain */
if (libxl_get_free_memory(cfg->ctx, &free_mem)) {
VIR_ERROR(_("Unable to configure libxl's memory management parameters"));
goto error;
}
/* setup autoballoon */
if (libxlGetAutoballoonConf(cfg, &cfg->autoballoon) < 0)
goto error;
return cfg;
error:
VIR_FREE(log_file);
virObjectUnref(cfg);
return NULL;
}
int virPolkitCheckAuth(const char *actionid,
pid_t pid,
unsigned long long startTime ATTRIBUTE_UNUSED,
uid_t uid,
const char **details,
bool allowInteraction ATTRIBUTE_UNUSED)
{
PolKitCaller *pkcaller = NULL;
PolKitAction *pkaction = NULL;
PolKitContext *pkcontext = NULL;
PolKitError *pkerr = NULL;
PolKitResult pkresult;
DBusError err;
DBusConnection *sysbus;
int ret = -1;
if (details) {
virReportError(VIR_ERR_AUTH_FAILED, "%s",
_("Details not supported with polkit v0"));
return -1;
}
if (!(sysbus = virDBusGetSystemBus()))
goto cleanup;
VIR_INFO("Checking PID %lld running as %d",
(long long) pid, uid);
dbus_error_init(&err);
if (!(pkcaller = polkit_caller_new_from_pid(sysbus,
pid, &err))) {
VIR_DEBUG("Failed to lookup policy kit caller: %s", err.message);
dbus_error_free(&err);
goto cleanup;
}
if (!(pkaction = polkit_action_new())) {
char ebuf[1024];
VIR_DEBUG("Failed to create polkit action %s",
virStrerror(errno, ebuf, sizeof(ebuf)));
goto cleanup;
}
polkit_action_set_action_id(pkaction, actionid);
if (!(pkcontext = polkit_context_new()) ||
!polkit_context_init(pkcontext, &pkerr)) {
char ebuf[1024];
VIR_DEBUG("Failed to create polkit context %s",
(pkerr ? polkit_error_get_error_message(pkerr)
: virStrerror(errno, ebuf, sizeof(ebuf))));
if (pkerr)
polkit_error_free(pkerr);
dbus_error_free(&err);
goto cleanup;
}
# if HAVE_POLKIT_CONTEXT_IS_CALLER_AUTHORIZED
pkresult = polkit_context_is_caller_authorized(pkcontext,
pkaction,
pkcaller,
0,
&pkerr);
if (pkerr && polkit_error_is_set(pkerr)) {
VIR_DEBUG("Policy kit failed to check authorization %d %s",
polkit_error_get_error_code(pkerr),
polkit_error_get_error_message(pkerr));
goto cleanup;
}
# else
pkresult = polkit_context_can_caller_do_action(pkcontext,
pkaction,
pkcaller);
# endif
if (pkresult != POLKIT_RESULT_YES) {
VIR_DEBUG("Policy kit denied action %s from pid %lld, uid %d, result: %s",
actionid, (long long) pid, uid,
polkit_result_to_string_representation(pkresult));
ret = -2;
goto cleanup;
}
VIR_DEBUG("Policy allowed action %s from pid %lld, uid %d",
actionid, (long long)pid, (int)uid);
ret = 0;
cleanup:
if (ret < 0) {
virResetLastError();
virReportError(VIR_ERR_AUTH_FAILED, "%s",
_("authentication failed"));
}
if (pkcontext)
polkit_context_unref(pkcontext);
if (pkcaller)
polkit_caller_unref(pkcaller);
if (pkaction)
polkit_action_unref(pkaction);
return ret;
}
int virPidFileAcquirePath(const char *path,
pid_t pid)
{
int fd = -1;
char pidstr[INT_BUFSIZE_BOUND(pid)];
if (path[0] == '\0')
return 0;
while (1) {
struct stat a, b;
if ((fd = open(path, O_WRONLY|O_CREAT, 0644)) < 0) {
virReportSystemError(errno,
_("Failed to open pid file '%s'"),
path);
return -1;
}
if (virSetCloseExec(fd) < 0) {
virReportSystemError(errno,
_("Failed to set close-on-exec flag '%s'"),
path);
VIR_FORCE_CLOSE(fd);
return -1;
}
if (fstat(fd, &b) < 0) {
virReportSystemError(errno,
_("Unable to check status of pid file '%s'"),
path);
VIR_FORCE_CLOSE(fd);
return -1;
}
if (virFileLock(fd, false, 0, 1) < 0) {
virReportSystemError(errno,
_("Failed to acquire pid file '%s'"),
path);
VIR_FORCE_CLOSE(fd);
return -1;
}
/* Now make sure the pidfile we locked is the same
* one that now exists on the filesystem
*/
if (stat(path, &a) < 0) {
char ebuf[1024] ATTRIBUTE_UNUSED;
VIR_DEBUG("Pid file '%s' disappeared: %s",
path, virStrerror(errno, ebuf, sizeof(ebuf)));
VIR_FORCE_CLOSE(fd);
/* Someone else must be racing with us, so try agin */
continue;
}
if (a.st_ino == b.st_ino)
break;
VIR_DEBUG("Pid file '%s' was recreated", path);
VIR_FORCE_CLOSE(fd);
/* Someone else must be racing with us, so try agin */
}
static int
virStorageBackendIQNFound(virStoragePoolObjPtr pool,
char **ifacename)
{
int ret = IQN_MISSING, fd = -1;
char ebuf[64];
FILE *fp = NULL;
pid_t child = 0;
char *line = NULL, *newline = NULL, *iqn = NULL, *token = NULL,
*saveptr = NULL;
const char *const prog[] = {
ISCSIADM, "--mode", "iface", NULL
};
if (VIR_ALLOC_N(line, LINE_SIZE) != 0) {
ret = IQN_ERROR;
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Could not allocate memory for output of '%s'"),
prog[0]);
goto out;
}
memset(line, 0, LINE_SIZE);
if (virExec(prog, NULL, NULL, &child, -1, &fd, NULL, VIR_EXEC_NONE) < 0) {
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to run '%s' when looking for existing interface with IQN '%s'"),
prog[0], pool->def->source.initiator.iqn);
ret = IQN_ERROR;
goto out;
}
if ((fp = fdopen(fd, "r")) == NULL) {
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to open stream for file descriptor "
"when reading output from '%s': '%s'"),
prog[0], virStrerror(errno, ebuf, sizeof ebuf));
ret = IQN_ERROR;
goto out;
}
while (fgets(line, LINE_SIZE, fp) != NULL) {
newline = strrchr(line, '\n');
if (newline == NULL) {
ret = IQN_ERROR;
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected line > %d characters "
"when parsing output of '%s'"),
LINE_SIZE, prog[0]);
goto out;
}
*newline = '\0';
iqn = strrchr(line, ',');
if (iqn == NULL) {
continue;
}
iqn++;
if (STREQ(iqn, pool->def->source.initiator.iqn)) {
token = strtok_r(line, " ", &saveptr);
*ifacename = strdup(token);
if (*ifacename == NULL) {
ret = IQN_ERROR;
virReportOOMError();
goto out;
}
VIR_DEBUG("Found interface '%s' with IQN '%s'", *ifacename, iqn);
ret = IQN_FOUND;
break;
}
}
out:
if (ret == IQN_MISSING) {
VIR_DEBUG("Could not find interface witn IQN '%s'", iqn);
}
VIR_FREE(line);
if (fp != NULL) {
fclose(fp);
} else {
if (fd != -1) {
close(fd);
}
}
return ret;
}
static int
qemuCapsInitGuest(virCapsPtr caps,
virCapsPtr old_caps,
const char *hostmachine,
const struct qemu_arch_info *info,
int hvm)
{
virCapsGuestPtr guest;
int i;
int haskvm = 0;
int haskqemu = 0;
char *kvmbin = NULL;
char *binary = NULL;
time_t binary_mtime;
virCapsGuestMachinePtr *machines = NULL;
int nmachines = 0;
struct stat st;
unsigned int ncpus;
virBitmapPtr qemuCaps = NULL;
int ret = -1;
/* Check for existance of base emulator, or alternate base
* which can be used with magic cpu choice
*/
binary = virFindFileInPath(info->binary);
if (binary == NULL || !virFileIsExecutable(binary)) {
VIR_FREE(binary);
binary = virFindFileInPath(info->altbinary);
}
/* Can use acceleration for KVM/KQEMU if
* - host & guest arches match
* Or
* - hostarch is x86_64 and guest arch is i686
* The latter simply needs "-cpu qemu32"
*/
if (STREQ(info->arch, hostmachine) ||
(STREQ(hostmachine, "x86_64") && STREQ(info->arch, "i686"))) {
if (access("/dev/kvm", F_OK) == 0) {
const char *const kvmbins[] = { "/usr/libexec/qemu-kvm", /* RHEL */
"qemu-kvm", /* Fedora */
"kvm" }; /* Upstream .spec */
for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) {
kvmbin = virFindFileInPath(kvmbins[i]);
if (!kvmbin)
continue;
haskvm = 1;
if (!binary)
binary = kvmbin;
break;
}
}
if (access("/dev/kqemu", F_OK) == 0)
haskqemu = 1;
}
if (!binary)
return 0;
/* Ignore binary if extracting version info fails */
if (qemuCapsExtractVersionInfo(binary, info->arch, NULL, &qemuCaps) < 0) {
ret = 0;
goto cleanup;
}
if (stat(binary, &st) == 0) {
binary_mtime = st.st_mtime;
} else {
char ebuf[1024];
VIR_WARN("Failed to stat %s, most peculiar : %s",
binary, virStrerror(errno, ebuf, sizeof(ebuf)));
binary_mtime = 0;
}
if (info->machine) {
virCapsGuestMachinePtr machine;
if (VIR_ALLOC(machine) < 0) {
goto no_memory;
}
if (!(machine->name = strdup(info->machine))) {
VIR_FREE(machine);
goto no_memory;
}
nmachines = 1;
if (VIR_ALLOC_N(machines, nmachines) < 0) {
VIR_FREE(machine->name);
VIR_FREE(machine);
goto no_memory;
}
machines[0] = machine;
} else {
int probe = 1;
if (old_caps && binary_mtime)
probe = !qemuCapsGetOldMachines(hvm ? "hvm" : "xen", info->arch,
info->wordsize, binary, binary_mtime,
old_caps, &machines, &nmachines);
if (probe &&
qemuCapsProbeMachineTypes(binary, &machines, &nmachines) < 0)
goto error;
}
/* We register kvm as the base emulator too, since we can
* just give -no-kvm to disable acceleration if required */
if ((guest = virCapabilitiesAddGuest(caps,
hvm ? "hvm" : "xen",
info->arch,
info->wordsize,
binary,
NULL,
nmachines,
machines)) == NULL)
goto error;
machines = NULL;
nmachines = 0;
guest->arch.defaultInfo.emulator_mtime = binary_mtime;
if (caps->host.cpu &&
qemuCapsProbeCPUModels(binary, NULL, info->arch, &ncpus, NULL) == 0 &&
ncpus > 0 &&
!virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
goto error;
if (qemuCapsGet(qemuCaps, QEMU_CAPS_BOOTINDEX) &&
!virCapabilitiesAddGuestFeature(guest, "deviceboot", 1, 0))
goto error;
if (hvm) {
if (virCapabilitiesAddGuestDomain(guest,
"qemu",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
if (haskqemu &&
virCapabilitiesAddGuestDomain(guest,
"kqemu",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
if (haskvm) {
virCapsGuestDomainPtr dom;
if (stat(kvmbin, &st) == 0) {
binary_mtime = st.st_mtime;
} else {
char ebuf[1024];
VIR_WARN("Failed to stat %s, most peculiar : %s",
binary, virStrerror(errno, ebuf, sizeof(ebuf)));
binary_mtime = 0;
}
if (!STREQ(binary, kvmbin)) {
int probe = 1;
if (old_caps && binary_mtime)
probe = !qemuCapsGetOldMachines("hvm", info->arch, info->wordsize,
kvmbin, binary_mtime,
old_caps, &machines, &nmachines);
if (probe &&
qemuCapsProbeMachineTypes(kvmbin, &machines, &nmachines) < 0)
goto error;
}
if ((dom = virCapabilitiesAddGuestDomain(guest,
"kvm",
kvmbin,
NULL,
nmachines,
machines)) == NULL) {
goto error;
}
machines = NULL;
nmachines = 0;
dom->info.emulator_mtime = binary_mtime;
}
} else {
if (virCapabilitiesAddGuestDomain(guest,
"kvm",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
}
if (info->nflags) {
for (i = 0 ; i < info->nflags ; i++) {
if (virCapabilitiesAddGuestFeature(guest,
info->flags[i].name,
info->flags[i].default_on,
info->flags[i].toggle) == NULL)
goto error;
}
}
ret = 0;
cleanup:
if (binary == kvmbin) {
/* don't double free */
VIR_FREE(binary);
} else {
VIR_FREE(binary);
VIR_FREE(kvmbin);
}
qemuCapsFree(qemuCaps);
return ret;
no_memory:
virReportOOMError();
error:
virCapabilitiesFreeMachines(machines, nmachines);
goto cleanup;
}
static virLockSpaceResourcePtr
virLockSpaceResourceNew(virLockSpacePtr lockspace,
const char *resname,
unsigned int flags,
pid_t owner)
{
virLockSpaceResourcePtr res;
bool shared = !!(flags & VIR_LOCK_SPACE_ACQUIRE_SHARED);
if (VIR_ALLOC(res) < 0)
return NULL;
res->fd = -1;
res->flags = flags;
if (VIR_STRDUP(res->name, resname) < 0)
goto error;
if (!(res->path = virLockSpaceGetResourcePath(lockspace, resname)))
goto error;
if (flags & VIR_LOCK_SPACE_ACQUIRE_AUTOCREATE) {
while (1) {
struct stat a, b;
if ((res->fd = open(res->path, O_RDWR|O_CREAT, 0600)) < 0) {
virReportSystemError(errno,
_("Unable to open/create resource %s"),
res->path);
goto error;
}
if (virSetCloseExec(res->fd) < 0) {
virReportSystemError(errno,
_("Failed to set close-on-exec flag '%s'"),
res->path);
goto error;
}
if (fstat(res->fd, &b) < 0) {
virReportSystemError(errno,
_("Unable to check status of pid file '%s'"),
res->path);
goto error;
}
if (virFileLock(res->fd, shared, 0, 1, false) < 0) {
if (errno == EACCES || errno == EAGAIN) {
virReportError(VIR_ERR_RESOURCE_BUSY,
_("Lockspace resource '%s' is locked"),
resname);
} else {
virReportSystemError(errno,
_("Unable to acquire lock on '%s'"),
res->path);
}
goto error;
}
/* Now make sure the pidfile we locked is the same
* one that now exists on the filesystem
*/
if (stat(res->path, &a) < 0) {
char ebuf[1024] ATTRIBUTE_UNUSED;
VIR_DEBUG("Resource '%s' disappeared: %s",
res->path, virStrerror(errno, ebuf, sizeof(ebuf)));
VIR_FORCE_CLOSE(res->fd);
/* Someone else must be racing with us, so try again */
continue;
}
if (a.st_ino == b.st_ino)
break;
VIR_DEBUG("Resource '%s' was recreated", res->path);
VIR_FORCE_CLOSE(res->fd);
/* Someone else must be racing with us, so try again */
}
} else {
/**
* qemuCreateInBridgePortWithHelper:
* @cfg: the configuration object in which the helper name is looked up
* @brname: the bridge name
* @ifname: the returned interface name
* @macaddr: the returned MAC address
* @tapfd: file descriptor return value for the new tap device
* @flags: OR of virNetDevTapCreateFlags:
* VIR_NETDEV_TAP_CREATE_VNET_HDR
* - Enable IFF_VNET_HDR on the tap device
*
* This function creates a new tap device on a bridge using an external
* helper. The final name for the bridge will be stored in @ifname.
*
* Returns 0 in case of success or -1 on failure
*/
static int
qemuCreateInBridgePortWithHelper(virQEMUDriverConfigPtr cfg,
const char *brname,
char **ifname,
int *tapfd,
unsigned int flags)
{
virCommandPtr cmd;
char *errbuf = NULL, *cmdstr = NULL;
int pair[2] = { -1, -1 };
if ((flags & ~VIR_NETDEV_TAP_CREATE_VNET_HDR) != VIR_NETDEV_TAP_CREATE_IFUP)
return -1;
if (socketpair(AF_UNIX, SOCK_STREAM, 0, pair) < 0) {
virReportSystemError(errno, "%s", _("failed to create socket"));
return -1;
}
if (!virFileIsExecutable(cfg->bridgeHelperName)) {
virReportSystemError(errno, _("'%s' is not a suitable bridge helper"),
cfg->bridgeHelperName);
return -1;
}
cmd = virCommandNew(cfg->bridgeHelperName);
if (flags & VIR_NETDEV_TAP_CREATE_VNET_HDR)
virCommandAddArgFormat(cmd, "--use-vnet");
virCommandAddArgFormat(cmd, "--br=%s", brname);
virCommandAddArgFormat(cmd, "--fd=%d", pair[1]);
virCommandSetErrorBuffer(cmd, &errbuf);
virCommandDoAsyncIO(cmd);
virCommandPassFD(cmd, pair[1],
VIR_COMMAND_PASS_FD_CLOSE_PARENT);
virCommandClearCaps(cmd);
#ifdef CAP_NET_ADMIN
virCommandAllowCap(cmd, CAP_NET_ADMIN);
#endif
if (virCommandRunAsync(cmd, NULL) < 0) {
*tapfd = -1;
goto cleanup;
}
do {
*tapfd = recvfd(pair[0], 0);
} while (*tapfd < 0 && errno == EINTR);
if (*tapfd < 0) {
char ebuf[1024];
char *errstr = NULL;
if (!(cmdstr = virCommandToString(cmd)))
goto cleanup;
virCommandAbort(cmd);
if (errbuf && *errbuf &&
virAsprintf(&errstr, "\nstderr=%s", errbuf) < 0)
goto cleanup;
virReportError(VIR_ERR_INTERNAL_ERROR,
_("%s: failed to communicate with bridge helper: %s%s"),
cmdstr, virStrerror(errno, ebuf, sizeof(ebuf)),
errstr ? errstr : "");
VIR_FREE(errstr);
goto cleanup;
}
if (virNetDevTapGetName(*tapfd, ifname) < 0 ||
virCommandWait(cmd, NULL) < 0) {
VIR_FORCE_CLOSE(*tapfd);
*tapfd = -1;
}
cleanup:
VIR_FREE(cmdstr);
VIR_FREE(errbuf);
virCommandFree(cmd);
VIR_FORCE_CLOSE(pair[0]);
return *tapfd < 0 ? -1 : 0;
}
static int
virStorageBackendIQNFound(const char *initiatoriqn,
char **ifacename)
{
int ret = IQN_MISSING, fd = -1;
char ebuf[64];
FILE *fp = NULL;
char *line = NULL, *newline = NULL, *iqn = NULL, *token = NULL;
virCommandPtr cmd = virCommandNewArgList(ISCSIADM,
"--mode", "iface", NULL);
if (VIR_ALLOC_N(line, LINE_SIZE) != 0) {
ret = IQN_ERROR;
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Could not allocate memory for output of '%s'"),
ISCSIADM);
goto out;
}
memset(line, 0, LINE_SIZE);
virCommandSetOutputFD(cmd, &fd);
if (virCommandRunAsync(cmd, NULL) < 0) {
ret = IQN_ERROR;
goto out;
}
if ((fp = VIR_FDOPEN(fd, "r")) == NULL) {
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to open stream for file descriptor "
"when reading output from '%s': '%s'"),
ISCSIADM, virStrerror(errno, ebuf, sizeof ebuf));
ret = IQN_ERROR;
goto out;
}
while (fgets(line, LINE_SIZE, fp) != NULL) {
newline = strrchr(line, '\n');
if (newline == NULL) {
ret = IQN_ERROR;
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected line > %d characters "
"when parsing output of '%s'"),
LINE_SIZE, ISCSIADM);
goto out;
}
*newline = '\0';
iqn = strrchr(line, ',');
if (iqn == NULL) {
continue;
}
iqn++;
if (STREQ(iqn, initiatoriqn)) {
token = strchr(line, ' ');
if (!token) {
ret = IQN_ERROR;
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing space when parsing output "
"of '%s'"), ISCSIADM);
goto out;
}
*ifacename = strndup(line, token - line);
if (*ifacename == NULL) {
ret = IQN_ERROR;
virReportOOMError();
goto out;
}
VIR_DEBUG("Found interface '%s' with IQN '%s'", *ifacename, iqn);
ret = IQN_FOUND;
break;
}
}
if (virCommandWait(cmd, NULL) < 0)
ret = IQN_ERROR;
out:
if (ret == IQN_MISSING) {
VIR_DEBUG("Could not find interface with IQN '%s'", iqn);
}
VIR_FREE(line);
VIR_FORCE_FCLOSE(fp);
VIR_FORCE_CLOSE(fd);
virCommandFree(cmd);
return ret;
}