int
qemuCapsProbeCPUModels(const char *qemu,
virBitmapPtr qemuCaps,
const char *arch,
unsigned int *count,
const char ***cpus)
{
char *output = NULL;
int ret = -1;
qemuCapsParseCPUModels parse;
virCommandPtr cmd;
if (count)
*count = 0;
if (cpus)
*cpus = NULL;
if (STREQ(arch, "i686") || STREQ(arch, "x86_64"))
parse = qemuCapsParseX86Models;
else if (STREQ(arch, "ppc64"))
parse = qemuCapsParsePPCModels;
else {
VIR_DEBUG("don't know how to parse %s CPU models", arch);
return 0;
}
cmd = virCommandNewArgList(qemu, "-cpu", "?", NULL);
if (qemuCapsGet(qemuCaps, QEMU_CAPS_NODEFCONFIG))
virCommandAddArg(cmd, "-nodefconfig");
virCommandAddEnvPassCommon(cmd);
virCommandSetOutputBuffer(cmd, &output);
virCommandClearCaps(cmd);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (parse(output, count, cpus) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(output);
virCommandFree(cmd);
return ret;
}
char *
virISCSIGetSession(const char *devpath,
bool probe)
{
/*
* # iscsiadm --mode session
* tcp: [1] 192.168.122.170:3260,1 demo-tgt-b
* tcp: [2] 192.168.122.170:3260,1 demo-tgt-a
*
* Pull out 2nd and 4th fields
*/
const char *regexes[] = {
"^tcp:\\s+\\[(\\S+)\\]\\s+\\S+\\s+(\\S+).*$"
};
int vars[] = {
2,
};
struct virISCSISessionData cbdata = {
.session = NULL,
.devpath = devpath,
};
char *error = NULL;
int exitstatus = 0;
virCommandPtr cmd = virCommandNewArgList(ISCSIADM, "--mode",
"session", NULL);
virCommandSetErrorBuffer(cmd, &error);
if (virCommandRunRegex(cmd,
1,
regexes,
vars,
virISCSIExtractSession,
&cbdata, NULL, &exitstatus) < 0)
goto cleanup;
if (cbdata.session == NULL && !probe)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find iscsiadm session: %s"),
NULLSTR(error));
cleanup:
VIR_FREE(error);
virCommandFree(cmd);
return cbdata.session;
}
static int virNetSocketForkDaemon(const char *binary)
{
int ret;
virCommandPtr cmd = virCommandNewArgList(binary,
"--timeout=30",
NULL);
virCommandAddEnvPassCommon(cmd);
virCommandAddEnvPass(cmd, "XDG_CACHE_HOME");
virCommandAddEnvPass(cmd, "XDG_CONFIG_HOME");
virCommandAddEnvPass(cmd, "XDG_RUNTIME_DIR");
virCommandClearCaps(cmd);
virCommandDaemonize(cmd);
ret = virCommandRun(cmd, NULL);
virCommandFree(cmd);
return ret;
}
/**
* @conn connection to report errors against
* @pool storage pool to unmount
*
* Ensure that a FS storage pool is not mounted on its target location.
* If already unmounted, this is a no-op
*
* Returns 0 if successfully unmounted, -1 on error
*/
static int
virStorageBackendFileSystemUnmount(virStoragePoolObjPtr pool) {
virCommandPtr cmd = NULL;
int ret = -1;
int rc;
if (pool->def->type == VIR_STORAGE_POOL_NETFS) {
if (pool->def->source.nhost != 1) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Expected exactly 1 host for the storage pool"));
return -1;
}
if (pool->def->source.hosts[0].name == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing source host"));
return -1;
}
if (pool->def->source.dir == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing source dir"));
return -1;
}
} else {
if (pool->def->source.ndevice != 1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing source device"));
return -1;
}
}
/* Short-circuit if already unmounted */
if ((rc = virStorageBackendFileSystemIsMounted(pool)) != 1)
return rc;
cmd = virCommandNewArgList(UMOUNT,
pool->def->target.path,
NULL);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendSheepdogRefreshAllVol(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool)
{
int ret = -1;
char *output = NULL;
char **lines = NULL;
char **cells = NULL;
size_t i;
virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "list", "-r", NULL);
virStorageBackendSheepdogAddHostArg(cmd, pool);
virCommandSetOutputBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
lines = virStringSplit(output, "\n", 0);
if (lines == NULL)
goto cleanup;
for (i = 0; lines[i]; i++) {
const char *line = lines[i];
if (line == NULL)
break;
cells = virStringSplit(line, " ", 0);
if (cells != NULL && virStringListLength(cells) > 2) {
if (virStorageBackendSheepdogAddVolume(conn, pool, cells[1]) < 0)
goto cleanup;
}
virStringFreeList(cells);
cells = NULL;
}
ret = 0;
cleanup:
virCommandFree(cmd);
virStringFreeList(lines);
virStringFreeList(cells);
VIR_FREE(output);
return ret;
}
static char *
virStorageBackendISCSISession(virStoragePoolObjPtr pool,
int probe)
{
/*
* # iscsiadm --mode session
* tcp: [1] 192.168.122.170:3260,1 demo-tgt-b
* tcp: [2] 192.168.122.170:3260,1 demo-tgt-a
*
* Pull out 2nd and 4th fields
*/
const char *regexes[] = {
"^tcp:\\s+\\[(\\S+)\\]\\s+\\S+\\s+(\\S+)\\s*$"
};
int vars[] = {
2,
};
char *session = NULL;
virCommandPtr cmd = virCommandNewArgList(ISCSIADM, "--mode", "session", NULL);
/* Note that we ignore the exitstatus. Older versions of iscsiadm tools
* returned an exit status of > 0, even if they succeeded. We will just
* rely on whether session got filled in properly.
*/
if (virStorageBackendRunProgRegex(pool,
cmd,
1,
regexes,
vars,
virStorageBackendISCSIExtractSession,
&session, NULL) < 0)
goto cleanup;
if (session == NULL &&
!probe) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot find session"));
goto cleanup;
}
cleanup:
virCommandFree(cmd);
return session;
}
/* virPolkitAgentCreate:
*
* Allocate and setup a polkit agent
*
* Returns a virCommandPtr on success and NULL on failure
*/
virPolkitAgentPtr
virPolkitAgentCreate(void)
{
virPolkitAgentPtr agent = NULL;
int pipe_fd[2] = {-1, -1};
struct pollfd pollfd;
int outfd = STDOUT_FILENO;
int errfd = STDERR_FILENO;
if (!isatty(STDIN_FILENO))
goto error;
if (pipe2(pipe_fd, 0) < 0)
goto error;
if (VIR_ALLOC(agent) < 0)
goto error;
agent->cmd = virCommandNewArgList(PKTTYAGENT, "--process", NULL);
virCommandAddArgFormat(agent->cmd, "%lld", (long long int) getpid());
virCommandAddArg(agent->cmd, "--notify-fd");
virCommandAddArgFormat(agent->cmd, "%d", pipe_fd[1]);
virCommandAddArg(agent->cmd, "--fallback");
virCommandSetInputFD(agent->cmd, STDIN_FILENO);
virCommandSetOutputFD(agent->cmd, &outfd);
virCommandSetErrorFD(agent->cmd, &errfd);
virCommandPassFD(agent->cmd, pipe_fd[1], VIR_COMMAND_PASS_FD_CLOSE_PARENT);
if (virCommandRunAsync(agent->cmd, NULL) < 0)
goto error;
pollfd.fd = pipe_fd[0];
pollfd.events = POLLHUP;
if (poll(&pollfd, 1, -1) < 0)
goto error;
return agent;
error:
VIR_FORCE_CLOSE(pipe_fd[0]);
VIR_FORCE_CLOSE(pipe_fd[1]);
virPolkitAgentDestroy(agent);
return NULL;
}
static int
virConnectAuthGainPolkit(const char *privilege)
{
virCommandPtr cmd;
int ret = -1;
if (geteuid() == 0)
return 0;
cmd = virCommandNewArgList(POLKIT_AUTH, "--obtain", privilege, NULL);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendSheepdogResizeVol(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned long long capacity,
unsigned int flags)
{
virCheckFlags(0, -1);
virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "resize", vol->name, NULL);
virCommandAddArgFormat(cmd, "%llu", capacity);
virStorageBackendSheepdogAddHostArg(cmd, pool);
int ret = virCommandRun(cmd, NULL);
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendSheepdogRefreshPool(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool)
{
int ret;
char *output = NULL;
virCommandPtr cmd;
cmd = virCommandNewArgList(COLLIE, "node", "info", "-r", NULL);
virStorageBackendSheepdogAddHostArg(cmd, pool);
virCommandSetOutputBuffer(cmd, &output);
ret = virCommandRun(cmd, NULL);
if (ret == 0)
ret = virStorageBackendSheepdogParseNodeInfo(pool->def, output);
virCommandFree(cmd);
VIR_FREE(output);
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;
}
/*
* @sourceList: Pointer to a storage pool source list
*
* Use the pvs command to fill the list of pv_name and vg_name associated
* into the passed sourceList.
*
* Returns 0 if successful, -1 and sets error on failure
*/
static int
virStorageBackendLogicalGetPoolSources(virStoragePoolSourceListPtr sourceList)
{
/*
* # pvs --noheadings -o pv_name,vg_name
* /dev/sdb
* /dev/sdc VolGroup00
*/
const char *regexes[] = {
"^\\s*(\\S+)\\s+(\\S+)\\s*$"
};
int vars[] = {
2
};
virCommandPtr cmd;
int ret = -1;
/*
* NOTE: ignoring errors here; this is just to "touch" any logical volumes
* that might be hanging around, so if this fails for some reason, the
* worst that happens is that scanning doesn't pick everything up
*/
cmd = virCommandNew(VGSCAN);
if (virCommandRun(cmd, NULL) < 0)
VIR_WARN("Failure when running vgscan to refresh physical volumes");
virCommandFree(cmd);
cmd = virCommandNewArgList(PVS,
"--noheadings",
"-o", "pv_name,vg_name",
NULL);
if (virCommandRunRegex(cmd, 1, regexes, vars,
virStorageBackendLogicalFindPoolSourcesFunc,
sourceList, "pvs") < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static char *
virStorageBackendISCSISession(virStoragePoolObjPtr pool,
bool probe)
{
/*
* # iscsiadm --mode session
* tcp: [1] 192.168.122.170:3260,1 demo-tgt-b
* tcp: [2] 192.168.122.170:3260,1 demo-tgt-a
*
* Pull out 2nd and 4th fields
*/
const char *regexes[] = {
"^tcp:\\s+\\[(\\S+)\\]\\s+\\S+\\s+(\\S+).*$"
};
int vars[] = {
2,
};
char *session = NULL;
virCommandPtr cmd = virCommandNewArgList(ISCSIADM, "--mode", "session", NULL);
if (virStorageBackendRunProgRegex(pool,
cmd,
1,
regexes,
vars,
virStorageBackendISCSIExtractSession,
&session, NULL) < 0)
goto cleanup;
if (session == NULL &&
!probe) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("cannot find session"));
goto cleanup;
}
cleanup:
virCommandFree(cmd);
return session;
}
static int
openvzGetVEStatus(virDomainObjPtr vm, int *status, int *reason)
{
virCommandPtr cmd;
char *outbuf;
char *line;
int state;
int ret = -1;
cmd = virCommandNewArgList(VZLIST, vm->def->name, "-ostatus", "-H", NULL);
virCommandSetOutputBuffer(cmd, &outbuf);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if ((line = strchr(outbuf, '\n')) == NULL) {
openvzError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to parse vzlist output"));
goto cleanup;
}
*line++ = '\0';
state = virDomainObjGetState(vm, reason);
if (STREQ(outbuf, "running")) {
/* There is no way to detect whether a domain is paused or not
* with vzlist */
if (state == VIR_DOMAIN_PAUSED)
*status = state;
else
*status = VIR_DOMAIN_RUNNING;
} else {
*status = VIR_DOMAIN_SHUTOFF;
}
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FREE(outbuf);
return ret;
}
/*
* load (add) a profile. Will create one if necessary
*/
static int
load_profile(virSecurityManagerPtr mgr,
const char *profile,
virDomainDefPtr def,
const char *fn,
bool append)
{
int rc = -1;
bool create = true;
char *xml = NULL;
virCommandPtr cmd = NULL;
const char *probe = virSecurityManagerGetAllowDiskFormatProbing(mgr)
? "1" : "0";
xml = virDomainDefFormat(def, VIR_DOMAIN_XML_SECURE);
if (!xml)
goto cleanup;
if (profile_status_file(profile) >= 0)
create = false;
cmd = virCommandNewArgList(VIRT_AA_HELPER, "-p", probe,
create ? "-c" : "-r",
"-u", profile, NULL);
if (!create && fn) {
if (append) {
virCommandAddArgList(cmd, "-F", fn, NULL);
} else {
virCommandAddArgList(cmd, "-f", fn, NULL);
}
}
virCommandSetInputBuffer(cmd, xml);
rc = virCommandRun(cmd, NULL);
cleanup:
VIR_FREE(xml);
virCommandFree(cmd);
return rc;
}
char *
virNumaGetAutoPlacementAdvice(unsigned short vcpus,
unsigned long long balloon)
{
virCommandPtr cmd = NULL;
char *output = NULL;
cmd = virCommandNewArgList(NUMAD, "-w", NULL);
virCommandAddArgFormat(cmd, "%d:%llu", vcpus,
VIR_DIV_UP(balloon, 1024));
virCommandSetOutputBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to query numad for the "
"advisory nodeset"));
virCommandFree(cmd);
return output;
}
/**
* virNodeSuspendSetNodeWakeup:
* @alarmTime: time in seconds from now, at which the RTC alarm has to be set.
*
* Set up the RTC alarm to the specified time.
* Return 0 on success, -1 on failure.
*/
static int virNodeSuspendSetNodeWakeup(unsigned long long alarmTime)
{
virCommandPtr setAlarmCmd;
int ret = -1;
if (alarmTime <= MIN_TIME_REQ_FOR_SUSPEND) {
virNodeSuspendError(VIR_ERR_INVALID_ARG, "%s", _("Suspend duration is too short"));
return -1;
}
setAlarmCmd = virCommandNewArgList("rtcwake", "-m", "no", "-s", NULL);
virCommandAddArgFormat(setAlarmCmd, "%lld", alarmTime);
if (virCommandRun(setAlarmCmd, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(setAlarmCmd);
return ret;
}
static int
virStorageBackendZFSDeletePool(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool,
unsigned int flags)
{
virCommandPtr cmd = NULL;
int ret = -1;
virCheckFlags(0, -1);
cmd = virCommandNewArgList(ZPOOL, "destroy",
pool->def->source.name, NULL);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendFileSystemNetFindNFSPoolSources(virNetfsDiscoverState *state)
{
int ret = -1;
/*
* # showmount --no-headers -e HOSTNAME
* /tmp *
* /A dir demo1.foo.bar,demo2.foo.bar
*
* Extract directory name (including possible interior spaces ...).
*/
const char *regexes[] = {
"^(/.*\\S) +\\S+$"
};
int vars[] = {
1
};
virCommandPtr cmd = NULL;
cmd = virCommandNewArgList(SHOWMOUNT,
"--no-headers",
"--exports",
state->host,
NULL);
if (virCommandRunRegex(cmd, 1, regexes, vars,
virStorageBackendFileSystemNetFindPoolSourcesFunc,
state, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
virStorageBackendZFSDeleteVol(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned int flags)
{
int ret = -1;
virCommandPtr destroy_cmd = virCommandNewArgList(ZFS, "destroy", NULL);
virCheckFlags(0, -1);
virCommandAddArgFormat(destroy_cmd, "%s/%s",
pool->def->source.name, vol->name);
if (virCommandRun(destroy_cmd, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(destroy_cmd);
return ret;
}
int
qemuCapsProbeMachineTypes(const char *binary,
virCapsGuestMachinePtr **machines,
int *nmachines)
{
char *output;
int ret = -1;
virCommandPtr cmd;
int status;
/* Make sure the binary we are about to try exec'ing exists.
* Technically we could catch the exec() failure, but that's
* in a sub-process so it's hard to feed back a useful error.
*/
if (!virFileIsExecutable(binary)) {
virReportSystemError(errno, _("Cannot find QEMU binary %s"), binary);
return -1;
}
cmd = virCommandNewArgList(binary, "-M", "?", NULL);
virCommandAddEnvPassCommon(cmd);
virCommandSetOutputBuffer(cmd, &output);
virCommandClearCaps(cmd);
/* Ignore failure from older qemu that did not understand '-M ?'. */
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
if (qemuCapsParseMachineTypesStr(output, machines, nmachines) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(output);
virCommandFree(cmd);
return ret;
}
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;
}
static int
virStorageBackendSheepdogRefreshVol(virConnectPtr conn ATTRIBUTE_UNUSED,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol)
{
int ret;
char *output = NULL;
virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "list", vol->name, "-r", NULL);
virStorageBackendSheepdogAddHostArg(cmd, pool);
virCommandSetOutputBuffer(cmd, &output);
ret = virCommandRun(cmd, NULL);
if (ret < 0)
goto cleanup;
if ((ret = virStorageBackendSheepdogParseVdiList(vol, output)) < 0)
goto cleanup;
vol->type = VIR_STORAGE_VOL_NETWORK;
VIR_FREE(vol->key);
if (virAsprintf(&vol->key, "%s/%s",
pool->def->source.name, vol->name) == -1) {
virReportOOMError();
goto cleanup;
}
VIR_FREE(vol->target.path);
if (!(vol->target.path = strdup(vol->name))) {
virReportOOMError();
goto cleanup;
}
cleanup:
virCommandFree(cmd);
return ret;
}
int
vmwareExtractVersion(struct vmware_driver *driver)
{
unsigned long version = 0;
char *tmp;
int ret = -1;
virCommandPtr cmd;
char * outbuf = NULL;
const char * bin = (driver->type == TYPE_PLAYER) ? "vmplayer" : "vmware";
const char * pattern = (driver->type == TYPE_PLAYER) ?
"VMware Player " : "VMware Workstation ";
cmd = virCommandNewArgList(bin, "-v", NULL);
virCommandSetOutputBuffer(cmd, &outbuf);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if ((tmp = STRSKIP(outbuf, pattern)) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("failed to parse %s version"), bin);
goto cleanup;
}
if (virParseVersionString(tmp, &version, false) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("version parsing error"));
goto cleanup;
}
driver->version = version;
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FREE(outbuf);
return ret;
}
static int
virStorageBackendVzPoolStart(virStoragePoolObjPtr pool)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(pool);
VIR_AUTOFREE(char *) grp_name = NULL;
VIR_AUTOFREE(char *) usr_name = NULL;
VIR_AUTOFREE(char *) mode = NULL;
VIR_AUTOPTR(virCommand) cmd = NULL;
/* Check the permissions */
if (def->target.perms.mode == (mode_t)-1)
def->target.perms.mode = VIR_STORAGE_DEFAULT_POOL_PERM_MODE;
if (def->target.perms.uid == (uid_t)-1)
def->target.perms.uid = geteuid();
if (def->target.perms.gid == (gid_t)-1)
def->target.perms.gid = getegid();
/* Convert ids to names because vstorage uses names */
if (!(grp_name = virGetGroupName(def->target.perms.gid)))
return -1;
if (!(usr_name = virGetUserName(def->target.perms.uid)))
return -1;
if (virAsprintf(&mode, "%o", def->target.perms.mode) < 0)
return -1;
cmd = virCommandNewArgList(VSTORAGE_MOUNT,
"-c", def->source.name,
def->target.path,
"-m", mode,
"-g", grp_name, "-u", usr_name,
NULL);
return virCommandRun(cmd, NULL);
}
static void
testCleanupImages(void)
{
virCommandPtr cmd;
VIR_FREE(qemuimg);
VIR_FREE(absraw);
VIR_FREE(canonraw);
VIR_FREE(absqcow2);
VIR_FREE(canonqcow2);
VIR_FREE(abswrap);
VIR_FREE(absqed);
VIR_FREE(abslink2);
if (chdir(abs_builddir) < 0) {
fprintf(stderr, "unable to return to correct directory, refusing to "
"clean up %s\n", datadir);
return;
}
cmd = virCommandNewArgList("rm", "-rf", datadir, NULL);
ignore_value(virCommandRun(cmd, NULL));
virCommandFree(cmd);
}
static char *
virStorageBackendSCSISerial(const char *dev)
{
char *serial = NULL;
#ifdef HAVE_UDEV
virCommandPtr cmd = virCommandNewArgList(
"/lib/udev/scsi_id",
"--replace-whitespace",
"--whitelisted",
"--device", dev,
NULL
);
/* Run the program and capture its output */
virCommandSetOutputBuffer(cmd, &serial);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
#endif
if (serial && STRNEQ(serial, "")) {
char *nl = strchr(serial, '\n');
if (nl)
*nl = '\0';
} else {
VIR_FREE(serial);
if (!(serial = strdup(dev)))
virReportOOMError();
}
#ifdef HAVE_UDEV
cleanup:
virCommandFree(cmd);
#endif
return serial;
}
static int
virStorageBackendSheepdogBuildVol(virConnectPtr conn,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol,
unsigned int flags)
{
int ret = -1;
virCheckFlags(0, -1);
virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "create", vol->name, NULL);
virCommandAddArgFormat(cmd, "%llu", vol->target.capacity);
virStorageBackendSheepdogAddHostArg(cmd, pool);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (virStorageBackendSheepdogRefreshVol(conn, pool, vol) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
testPrepImages(void)
{
int ret = EXIT_FAILURE;
virCommandPtr cmd = NULL;
qemuimg = virFindFileInPath("kvm-img");
if (!qemuimg)
qemuimg = virFindFileInPath("qemu-img");
if (!qemuimg)
goto skip;
if (virAsprintf(&absraw, "%s/raw", datadir) < 0 ||
virAsprintf(&absqcow2, "%s/qcow2", datadir) < 0 ||
virAsprintf(&abswrap, "%s/wrap", datadir) < 0 ||
virAsprintf(&absqed, "%s/qed", datadir) < 0 ||
virAsprintf(&abslink2, "%s/sub/link2", datadir) < 0) {
virReportOOMError();
goto cleanup;
}
if (virFileMakePath(datadir "/sub") < 0) {
fprintf(stderr, "unable to create directory %s\n", datadir "/sub");
goto cleanup;
}
if (chdir(datadir) < 0) {
fprintf(stderr, "unable to test relative backing chains\n");
goto cleanup;
}
/* I'm lazy enough to use a shell one-liner instead of open/write/close */
virCommandFree(cmd);
cmd = virCommandNewArgList("sh", "-c", "printf %1024d 0 > raw", NULL);
if (virCommandRun(cmd, NULL) < 0) {
fprintf(stderr, "unable to create raw file\n");
goto cleanup;
}
if (!(canonraw = canonicalize_file_name(absraw))) {
virReportOOMError();
goto cleanup;
}
/* Create a qcow2 wrapping relative raw; later on, we modify its
* metadata to test other configurations */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "create", "-f", "qcow2",
"-obacking_file=raw,backing_fmt=raw", "qcow2",
NULL);
if (virCommandRun(cmd, NULL) < 0)
goto skip;
/* Make sure our later uses of 'qemu-img rebase' will work */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-F", "raw", "-b", "raw", "qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
goto skip;
if (!(canonqcow2 = canonicalize_file_name(absqcow2))) {
virReportOOMError();
goto cleanup;
}
/* Create a second qcow2 wrapping the first, to be sure that we
* can correctly avoid insecure probing. */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "create", "-f", "qcow2", NULL);
virCommandAddArgFormat(cmd, "-obacking_file=%s,backing_fmt=qcow2",
absqcow2);
virCommandAddArg(cmd, "wrap");
if (virCommandRun(cmd, NULL) < 0)
goto skip;
/* Create a qed file. */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "create", "-f", "qed", NULL);
virCommandAddArgFormat(cmd, "-obacking_file=%s,backing_fmt=raw",
absraw);
virCommandAddArg(cmd, "qed");
if (virCommandRun(cmd, NULL) < 0)
goto skip;
/* Create some symlinks in a sub-directory. */
if (symlink("../qcow2", datadir "/sub/link1") < 0 ||
symlink("../wrap", datadir "/sub/link2") < 0) {
fprintf(stderr, "unable to create symlink");
goto cleanup;
}
ret = 0;
cleanup:
virCommandFree(cmd);
if (ret)
testCleanupImages();
return ret;
skip:
fputs("qemu-img is too old; skipping this test\n", stderr);
ret = EXIT_AM_SKIP;
goto cleanup;
}
static int
mymain(void)
{
int ret;
virCommandPtr cmd = NULL;
/* Prep some files with qemu-img; if that is not found on PATH, or
* if it lacks support for qcow2 and qed, skip this test. */
if ((ret = testPrepImages()) != 0)
return ret;
#define TEST_ONE_CHAIN(id, start, format, chain, flags) \
do { \
struct testChainData data = { \
start, format, chain, ARRAY_CARDINALITY(chain), flags, \
}; \
if (virtTestRun("Storage backing chain " id, 1, \
testStorageChain, &data) < 0) \
ret = -1; \
} while (0)
#define TEST_CHAIN(id, relstart, absstart, format, chain1, flags1, \
chain2, flags2, chain3, flags3, chain4, flags4) \
do { \
TEST_ONE_CHAIN(#id "a", relstart, format, chain1, flags1); \
TEST_ONE_CHAIN(#id "b", relstart, format, chain2, flags2); \
TEST_ONE_CHAIN(#id "c", absstart, format, chain3, flags3); \
TEST_ONE_CHAIN(#id "d", absstart, format, chain4, flags4); \
} while (0)
/* Expected details about files in chains */
const testFileData raw = {
NULL, NULL, NULL, VIR_STORAGE_FILE_NONE, false, 0, false,
};
const testFileData qcow2_relback_relstart = {
canonraw, "raw", ".", VIR_STORAGE_FILE_RAW, true, 1024, false,
};
const testFileData qcow2_relback_absstart = {
canonraw, "raw", datadir, VIR_STORAGE_FILE_RAW, true, 1024, false,
};
const testFileData qcow2_absback = {
canonraw, absraw, datadir, VIR_STORAGE_FILE_RAW, true, 1024, false,
};
const testFileData qcow2_as_probe = {
canonraw, absraw, datadir, VIR_STORAGE_FILE_AUTO, true, 1024, false,
};
const testFileData qcow2_bogus = {
NULL, datadir "/bogus", datadir, VIR_STORAGE_FILE_NONE,
false, 1024, false,
};
const testFileData qcow2_protocol = {
"nbd:example.org:6000", NULL, NULL, VIR_STORAGE_FILE_RAW,
false, 1024, false,
};
const testFileData wrap = {
canonqcow2, absqcow2, datadir, VIR_STORAGE_FILE_QCOW2,
true, 1024, false,
};
const testFileData wrap_as_raw = {
canonqcow2, absqcow2, datadir, VIR_STORAGE_FILE_RAW,
true, 1024, false,
};
const testFileData wrap_as_probe = {
canonqcow2, absqcow2, datadir, VIR_STORAGE_FILE_AUTO,
true, 1024, false,
};
const testFileData qed = {
canonraw, absraw, datadir, VIR_STORAGE_FILE_RAW,
true, 1024, false,
};
const testFileData link1_rel = {
canonraw, "../raw", "sub/../sub/..", VIR_STORAGE_FILE_RAW,
true, 1024, false,
};
const testFileData link1_abs = {
canonraw, "../raw", datadir "/sub/../sub/..", VIR_STORAGE_FILE_RAW,
true, 1024, false,
};
const testFileData link2_rel = {
canonqcow2, "../sub/link1", "sub/../sub", VIR_STORAGE_FILE_QCOW2,
true, 1024, false,
};
const testFileData link2_abs = {
canonqcow2, "../sub/link1", datadir "/sub/../sub",
VIR_STORAGE_FILE_QCOW2, true, 1024, false,
};
/* The actual tests, in several groups. */
/* Missing file */
const testFileData chain0[] = { };
TEST_ONE_CHAIN("0", "bogus", VIR_STORAGE_FILE_RAW, chain0, EXP_FAIL);
/* Raw image, whether with right format or no specified format */
const testFileData chain1[] = { raw };
TEST_CHAIN(1, "raw", absraw, VIR_STORAGE_FILE_RAW,
chain1, EXP_PASS,
chain1, ALLOW_PROBE | EXP_PASS,
chain1, EXP_PASS,
chain1, ALLOW_PROBE | EXP_PASS);
TEST_CHAIN(2, "raw", absraw, VIR_STORAGE_FILE_AUTO,
chain1, EXP_PASS,
chain1, ALLOW_PROBE | EXP_PASS,
chain1, EXP_PASS,
chain1, ALLOW_PROBE | EXP_PASS);
/* Qcow2 file with relative raw backing, format provided */
const testFileData chain3a[] = { qcow2_relback_relstart, raw };
const testFileData chain3c[] = { qcow2_relback_absstart, raw };
const testFileData chain4a[] = { raw };
TEST_CHAIN(3, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
chain3a, EXP_PASS,
chain3a, ALLOW_PROBE | EXP_PASS,
chain3c, EXP_PASS,
chain3c, ALLOW_PROBE | EXP_PASS);
TEST_CHAIN(4, "qcow2", absqcow2, VIR_STORAGE_FILE_AUTO,
chain4a, EXP_PASS,
chain3a, ALLOW_PROBE | EXP_PASS,
chain4a, EXP_PASS,
chain3c, ALLOW_PROBE | EXP_PASS);
/* Rewrite qcow2 file to use absolute backing name */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-F", "raw", "-b", absraw, "qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
/* Qcow2 file with raw as absolute backing, backing format provided */
const testFileData chain5[] = { qcow2_absback, raw };
const testFileData chain6[] = { raw };
TEST_CHAIN(5, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
chain5, EXP_PASS,
chain5, ALLOW_PROBE | EXP_PASS,
chain5, EXP_PASS,
chain5, ALLOW_PROBE | EXP_PASS);
TEST_CHAIN(6, "qcow2", absqcow2, VIR_STORAGE_FILE_AUTO,
chain6, EXP_PASS,
chain5, ALLOW_PROBE | EXP_PASS,
chain6, EXP_PASS,
chain5, ALLOW_PROBE | EXP_PASS);
/* Wrapped file access */
const testFileData chain7[] = { wrap, qcow2_absback, raw };
TEST_CHAIN(7, "wrap", abswrap, VIR_STORAGE_FILE_QCOW2,
chain7, EXP_PASS,
chain7, ALLOW_PROBE | EXP_PASS,
chain7, EXP_PASS,
chain7, ALLOW_PROBE | EXP_PASS);
/* Rewrite qcow2 and wrap file to omit backing file type */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-b", absraw, "qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-b", absqcow2, "wrap", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
/* Qcow2 file with raw as absolute backing, backing format omitted */
const testFileData chain8a[] = { wrap_as_raw, raw };
const testFileData chain8b[] = { wrap_as_probe, qcow2_as_probe, raw };
TEST_CHAIN(8, "wrap", abswrap, VIR_STORAGE_FILE_QCOW2,
chain8a, EXP_PASS,
chain8b, ALLOW_PROBE | EXP_PASS,
chain8a, EXP_PASS,
chain8b, ALLOW_PROBE | EXP_PASS);
/* Rewrite qcow2 to a missing backing file, with backing type */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-F", "qcow2", "-b", datadir "/bogus",
"qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
/* Qcow2 file with missing backing file but specified type */
const testFileData chain9[] = { qcow2_bogus };
TEST_CHAIN(9, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
chain9, EXP_WARN,
chain9, ALLOW_PROBE | EXP_WARN,
chain9, EXP_WARN,
chain9, ALLOW_PROBE | EXP_WARN);
/* Rewrite qcow2 to a missing backing file, without backing type */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-b", datadir "/bogus", "qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
/* Qcow2 file with missing backing file and no specified type */
const testFileData chain10[] = { qcow2_bogus };
TEST_CHAIN(10, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
chain10, EXP_WARN,
chain10, ALLOW_PROBE | EXP_WARN,
chain10, EXP_WARN,
chain10, ALLOW_PROBE | EXP_WARN);
/* Rewrite qcow2 to use an nbd: protocol as backend */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-F", "raw", "-b", "nbd:example.org:6000",
"qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
/* Qcow2 file with backing protocol instead of file */
const testFileData chain11[] = { qcow2_protocol };
TEST_CHAIN(11, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
chain11, EXP_PASS,
chain11, ALLOW_PROBE | EXP_PASS,
chain11, EXP_PASS,
chain11, ALLOW_PROBE | EXP_PASS);
/* qed file */
const testFileData chain12a[] = { raw };
const testFileData chain12b[] = { qed, raw };
TEST_CHAIN(12, "qed", absqed, VIR_STORAGE_FILE_AUTO,
chain12a, EXP_PASS,
chain12b, ALLOW_PROBE | EXP_PASS,
chain12a, EXP_PASS,
chain12b, ALLOW_PROBE | EXP_PASS);
/* Rewrite qcow2 and wrap file to use backing names relative to a
* symlink from a different directory */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-F", "raw", "-b", "../raw", "qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
"-F", "qcow2", "-b", "../sub/link1", "wrap",
NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
/* Behavior of symlinks to qcow2 with relative backing files */
const testFileData chain13a[] = { link2_rel, link1_rel, raw };
const testFileData chain13c[] = { link2_abs, link1_abs, raw };
TEST_CHAIN(13, "sub/link2", abslink2, VIR_STORAGE_FILE_QCOW2,
chain13a, EXP_PASS,
chain13a, ALLOW_PROBE | EXP_PASS,
chain13c, EXP_PASS,
chain13c, ALLOW_PROBE | EXP_PASS);
/* Final cleanup */
testCleanupImages();
virCommandFree(cmd);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}