static int
virLogFormatString(char **msg,
int linenr,
const char *funcname,
virLogPriority priority,
const char *str)
{
int ret;
/*
* Be careful when changing the following log message formatting, we rely
* on it when stripping libvirt debug messages from qemu log files. So when
* changing this, you might also need to change the code there.
* virLogFormatString() function name is mentioned there so it's sufficient
* to just grep for it to find the right place.
*/
if ((funcname != NULL)) {
ret = virAsprintfQuiet(msg, "%llu: %s : %s:%d : %s\n",
virThreadSelfID(), virLogPriorityString(priority),
funcname, linenr, str);
} else {
ret = virAsprintfQuiet(msg, "%llu: %s : %s\n",
virThreadSelfID(), virLogPriorityString(priority),
str);
}
return ret;
}
void *
virDriverLoadModule(const char *name)
{
char *modfile = NULL, *regfunc = NULL;
void *handle = NULL;
int (*regsym)(void);
if (moddir == NULL)
virDriverModuleInitialize(NULL);
VIR_DEBUG("Module load %s", name);
if (virAsprintfQuiet(&modfile, "%s/libvirt_driver_%s.so", moddir, name) < 0)
return NULL;
if (access(modfile, R_OK) < 0) {
VIR_WARN("Module %s not accessible", modfile);
goto cleanup;
}
handle = dlopen(modfile, RTLD_NOW | RTLD_GLOBAL);
if (!handle) {
VIR_ERROR(_("failed to load module %s %s"), modfile, dlerror());
goto cleanup;
}
if (virAsprintfQuiet(®func, "%sRegister", name) < 0) {
goto cleanup;
}
regsym = dlsym(handle, regfunc);
if (!regsym) {
VIR_ERROR(_("Missing module registration symbol %s"), regfunc);
goto cleanup;
}
if ((*regsym)() < 0) {
VIR_ERROR(_("Failed module registration %s"), regfunc);
goto cleanup;
}
VIR_FREE(modfile);
VIR_FREE(regfunc);
return handle;
cleanup:
VIR_FREE(modfile);
VIR_FREE(regfunc);
if (handle)
dlclose(handle);
return NULL;
}
/**
* virProcessTranslateStatus:
* @status: child exit status to translate
*
* Translate an exit status into a malloc'd string. Generic helper
* for virCommandRun(), virCommandWait(), virRun(), and virProcessWait()
* status argument, as well as raw waitpid().
*/
char *
virProcessTranslateStatus(int status)
{
char *buf;
if (WIFEXITED(status)) {
ignore_value(virAsprintfQuiet(&buf, _("exit status %d"),
WEXITSTATUS(status)));
} else if (WIFSIGNALED(status)) {
ignore_value(virAsprintfQuiet(&buf, _("fatal signal %d"),
WTERMSIG(status)));
} else {
ignore_value(virAsprintfQuiet(&buf, _("invalid value %d"), status));
}
return buf;
}
/*
* Poor man's mocked NUMA guesser. We basically check if
* /sys/devices/system/node (where /sys/devices/system can already be mocked or
* changed in the tests) exists and cache the result.
*/
bool
virNumaIsAvailable(void)
{
if (numa_avail < 0) {
char *sysfs_node_path = NULL;
if (virAsprintfQuiet(&sysfs_node_path, "%s/node", SYSFS_SYSTEM_PATH) < 0)
return false;
numa_avail = virFileExists(sysfs_node_path);
VIR_FREE(sysfs_node_path);
}
/*
* Quite a few more things need to be mocked if NUMA is not available and
* you are using this file. Do not remove the abort() call below unless you
* make sure all under virCapabilitiesInitNUMAFake() is mocked (and whatever
* might have changed since this comment was added. You are welcome.
*/
if (!numa_avail)
abort();
return numa_avail;
}
static char *
virDomainAuditGetRdev(const char *path)
{
char *ret = NULL;
struct stat sb;
if (stat(path, &sb) == 0 &&
(S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode))) {
int maj = major(sb.st_rdev);
int min = minor(sb.st_rdev);
ignore_value(virAsprintfQuiet(&ret, "%02X:%02X", maj, min));
}
return ret;
}
char *
canonicalize_file_name(const char *path)
{
if (getenv("LIBVIRT_MTAB")) {
const char *p;
char *ret;
if ((p = STRSKIP(path, "/some/symlink")))
ignore_value(virAsprintfQuiet(&ret, "/gluster%s", p));
else
ignore_value(VIR_STRDUP_QUIET(ret, path));
return ret;
}
return real_canonicalize_file_name(path);
}
static void init_sysfs(void)
{
if (fakerootdir && fakesysfscgroupdir)
return;
if (!(fakerootdir = getenv("LIBVIRT_FAKE_ROOT_DIR"))) {
fprintf(stderr, "Missing LIBVIRT_FAKE_ROOT_DIR env variable\n");
abort();
}
if (virAsprintfQuiet(&fakesysfscgroupdir, "%s%s",
fakerootdir, SYSFS_CGROUP_PREFIX) < 0)
abort();
if (virFileMakePath(fakesysfscgroupdir) < 0) {
fprintf(stderr, "Cannot create %s\n", fakesysfscgroupdir);
abort();
}
# define MAKE_CONTROLLER(subpath) \
do { \
char *path; \
if (asprintf(&path, "%s/%s", fakesysfscgroupdir, subpath) < 0) \
abort(); \
if (make_controller(path, 0755) < 0) { \
fprintf(stderr, "Cannot initialize %s\n", path); \
free(path); \
abort(); \
} \
free(path); \
} while (0)
MAKE_CONTROLLER("cpu");
MAKE_CONTROLLER("cpuacct");
MAKE_CONTROLLER("cpu,cpuacct");
MAKE_CONTROLLER("cpu,cpuacct/system");
MAKE_CONTROLLER("cpuset");
MAKE_CONTROLLER("blkio");
MAKE_CONTROLLER("memory");
MAKE_CONTROLLER("freezer");
if (make_file(fakesysfscgroupdir,
SYSFS_CPU_PRESENT_MOCKED, "8-23,48-159\n") < 0)
abort();
}
static int
getrealpath(char **newpath,
const char *path)
{
if (STRPREFIX(path, LEASEDIR)) {
if (virAsprintfQuiet(newpath, "%s/nssdata/%s",
abs_srcdir,
path + strlen(LEASEDIR)) < 0) {
errno = ENOMEM;
return -1;
}
} else {
if (VIR_STRDUP_QUIET(*newpath, path) < 0)
return -1;
}
return 0;
}
/* Similar to virGetHostname() but avoids use of error
* reporting APIs or logging APIs, to prevent recursion
*/
static int
virLogHostnameString(char **rawmsg,
char **msg)
{
char *hostname = virGetHostnameQuiet();
char *hoststr;
if (!hostname)
return -1;
if (virAsprintfQuiet(&hoststr, "hostname: %s", hostname) < 0) {
VIR_FREE(hostname);
return -1;
}
VIR_FREE(hostname);
if (virLogFormatString(msg, 0, NULL, VIR_LOG_INFO, hoststr) < 0) {
VIR_FREE(hoststr);
return -1;
}
*rawmsg = hoststr;
return 0;
}
/* creates network intereface for VM */
static int
createVifNetwork(virConnectPtr conn, xen_vm vm, int device,
char *bridge, char *mac)
{
xen_session *session = ((struct _xenapiPrivate *)(conn->privateData))->session;
xen_vm xvm = NULL;
char *uuid = NULL;
xen_vm_get_uuid(session, &uuid, vm);
if (uuid) {
if (!xen_vm_get_by_uuid(session, &xvm, uuid))
return -1;
VIR_FREE(uuid);
}
xen_vm_record_opt *vm_opt = xen_vm_record_opt_alloc();
vm_opt->is_record = 0;
vm_opt->u.handle = xvm;
xen_network_set *net_set = NULL;
xen_network_record *net_rec = NULL;
int cnt = 0;
if (xen_network_get_all(session, &net_set)) {
for (cnt = 0; cnt < net_set->size; cnt++) {
if (xen_network_get_record(session, &net_rec, net_set->contents[cnt])) {
if (STREQ(net_rec->bridge, bridge)) {
break;
} else {
xen_network_record_free(net_rec);
}
}
}
}
if (cnt < net_set->size && net_rec) {
xen_network network = NULL;
xen_network_get_by_uuid(session, &network, net_rec->uuid);
xen_network_record_opt *network_opt = xen_network_record_opt_alloc();
network_opt->is_record = 0;
network_opt->u.handle = network;
xen_vif_record *vif_record = xen_vif_record_alloc();
vif_record->mac = mac;
vif_record->vm = vm_opt;
vif_record->network = network_opt;
xen_vif vif = NULL;
vif_record->other_config = xen_string_string_map_alloc(0);
vif_record->runtime_properties = xen_string_string_map_alloc(0);
vif_record->qos_algorithm_params = xen_string_string_map_alloc(0);
if (virAsprintfQuiet(&vif_record->device, "%d", device) < 0)
return -1;
xen_vif_create(session, &vif, vif_record);
if (!vif) {
xen_vif_free(vif);
xen_vif_record_free(vif_record);
xen_network_record_free(net_rec);
xen_network_set_free(net_set);
return 0;
}
xen_vif_record_free(vif_record);
xen_network_record_free(net_rec);
}
if (net_set != NULL) xen_network_set_free(net_set);
return -1;
}
void *
virDriverLoadModule(const char *name)
{
char *modfile = NULL, *regfunc = NULL, *fixedname = NULL;
char *tmp;
void *handle = NULL;
int (*regsym)(void);
VIR_DEBUG("Module load %s", name);
if (!(modfile = virFileFindResourceFull(name,
"libvirt_driver_",
".so",
abs_topbuilddir "/src/.libs",
DEFAULT_DRIVER_DIR,
"LIBVIRT_DRIVER_DIR")))
return NULL;
if (access(modfile, R_OK) < 0) {
VIR_INFO("Module %s not accessible", modfile);
goto cleanup;
}
virUpdateSelfLastChanged(modfile);
handle = dlopen(modfile, RTLD_NOW | RTLD_GLOBAL);
if (!handle) {
VIR_ERROR(_("failed to load module %s %s"), modfile, dlerror());
goto cleanup;
}
if (VIR_STRDUP_QUIET(fixedname, name) < 0) {
VIR_ERROR(_("out of memory"));
goto cleanup;
}
/* convert something_like_this into somethingLikeThis */
while ((tmp = strchr(fixedname, '_'))) {
memmove(tmp, tmp + 1, strlen(tmp));
*tmp = c_toupper(*tmp);
}
if (virAsprintfQuiet(®func, "%sRegister", fixedname) < 0)
goto cleanup;
regsym = dlsym(handle, regfunc);
if (!regsym) {
VIR_ERROR(_("Missing module registration symbol %s"), regfunc);
goto cleanup;
}
if ((*regsym)() < 0) {
VIR_ERROR(_("Failed module registration %s"), regfunc);
goto cleanup;
}
VIR_FREE(modfile);
VIR_FREE(regfunc);
VIR_FREE(fixedname);
return handle;
cleanup:
VIR_FREE(modfile);
VIR_FREE(regfunc);
VIR_FREE(fixedname);
if (handle)
dlclose(handle);
return NULL;
}
static int
create_scsihost(const char *fakesysfsdir, const char *devicepath,
const char *unique_id, const char *hostname)
{
char *unique_id_path = NULL;
char *link_path = NULL;
char *spot;
int ret = -1;
int fd = -1;
if (virAsprintfQuiet(&unique_id_path, "%s/devices/pci0000:00/%s/unique_id",
fakesysfsdir, devicepath) < 0 ||
virAsprintfQuiet(&link_path, "%s/class/scsi_host/%s",
fakesysfsdir, hostname) < 0) {
fprintf(stderr, "Out of memory\n");
goto cleanup;
}
/* Rather than create path & file, temporarily snip off the file to
* create the path
*/
if (!(spot = strstr(unique_id_path, "unique_id"))) {
fprintf(stderr, "Did not find unique_id in path\n");
goto cleanup;
}
spot--;
*spot = '\0';
if (virFileMakePathWithMode(unique_id_path, 0755) < 0) {
fprintf(stderr, "Unable to make path to '%s'\n", unique_id_path);
goto cleanup;
}
*spot = '/';
/* Rather than create path & file, temporarily snip off the file to
* create the path
*/
if (!(spot = strstr(link_path, hostname))) {
fprintf(stderr, "Did not find hostname in path\n");
goto cleanup;
}
spot--;
*spot = '\0';
if (virFileMakePathWithMode(link_path, 0755) < 0) {
fprintf(stderr, "Unable to make path to '%s'\n", link_path);
goto cleanup;
}
*spot = '/';
if ((fd = open(unique_id_path, O_CREAT|O_WRONLY, 0444)) < 0) {
fprintf(stderr, "Unable to create '%s'\n", unique_id_path);
goto cleanup;
}
if (safewrite(fd, unique_id, 1) != 1) {
fprintf(stderr, "Unable to write '%s'\n", unique_id);
goto cleanup;
}
VIR_DEBUG("Created unique_id '%s'", unique_id_path);
/* The link is to the path not the file - so remove the file */
if (!(spot = strstr(unique_id_path, "unique_id"))) {
fprintf(stderr, "Did not find unique_id in path\n");
goto cleanup;
}
spot--;
*spot = '\0';
if (symlink(unique_id_path, link_path) < 0) {
fprintf(stderr, "Unable to create symlink '%s' to '%s'\n",
link_path, unique_id_path);
goto cleanup;
}
VIR_DEBUG("Created symlink '%s'", link_path);
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
VIR_FREE(unique_id_path);
VIR_FREE(link_path);
return ret;
}
