External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-01-22 12:35:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

storage: fs: Process backing store data in virStorageBackendProbeTarget

Browse Source 
Move the processing of the backend metadata directly to the helper
instead of passing it through arguments to the function.
This commit is contained in:
Peter Krempa 2014-07-14 17:29:54 +02:00
parent 9f20d6a56d
commit cd4d547576
1 changed files with 32 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
src/storage/storage_backend_fs.c
View File

@ -61,20 +61,17 @@ VIR_LOG_INIT("storage.storage_backend_fs");
#define VIR_STORAGE_VOL_FS_PROBE_FLAGS (VIR_STORAGE_VOL_FS_OPEN_FLAGS | \
VIR_STORAGE_VOL_OPEN_NOERROR)
static int ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
static int
virStorageBackendProbeTarget(virStorageSourcePtr target,
char **backingStore,
int *backingStoreFormat,
virStorageEncryptionPtr *encryption)
{
int backingStoreFormat;
int fd = -1;
int ret = -1;
int rc;
virStorageSourcePtr meta = NULL;
struct stat sb;
*backingStore = NULL;
*backingStoreFormat = VIR_STORAGE_FILE_AUTO;
if (encryption)
*encryption = NULL;
@ -95,32 +92,41 @@ virStorageBackendProbeTarget(virStorageSourcePtr target,
if (!(meta = virStorageFileGetMetadataFromFD(target->path,
fd,
VIR_STORAGE_FILE_AUTO,
backingStoreFormat)))
&backingStoreFormat)))
goto cleanup;
if (VIR_STRDUP(*backingStore, meta->backingStoreRaw) < 0)
goto cleanup;
if (meta->backingStoreRaw) {
if (VIR_ALLOC(target->backingStore) < 0)
goto cleanup;
/* Default to success below this point */
ret = 0;
target->backingStore->path = meta->backingStoreRaw;
meta->backingStoreRaw = NULL;
target->backingStore->format = backingStoreFormat;
if (target->backingStore->format == VIR_STORAGE_FILE_AUTO) {
if (!virStorageIsFile(target->backingStore->path) ||
(rc = virStorageFileProbeFormat(target->backingStore->path,
-1, -1)) < 0) {
/* If the backing file is currently unavailable or is
* accessed via remote protocol only log an error, fake the
* format as RAW and continue. Returning -1 here would
* disable the whole storage pool, making it unavailable for
* even maintenance. */
target->backingStore->format = VIR_STORAGE_FILE_RAW;
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot probe backing volume format: %s"),
target->backingStore->path);
ret = -3;
} else {
target->backingStore->format = rc;
}
}
}
target->format = meta->format;
if (*backingStore &&
*backingStoreFormat == VIR_STORAGE_FILE_AUTO &&
virStorageIsFile(*backingStore)) {
if ((rc = virStorageFileProbeFormat(*backingStore, -1, -1)) < 0) {
/* If the backing file is currently unavailable, only log an error,
* but continue. Returning -1 here would disable the whole storage
* pool, making it unavailable for even maintenance. */
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot probe backing volume format: %s"),
*backingStore);
ret = -3;
} else {
*backingStoreFormat = rc;
}
}
/* Default to success below this point */
ret = 0;
if (meta->capacity)
target->capacity = meta->capacity;
@ -845,8 +851,6 @@ virStorageBackendFileSystemRefresh(virConnectPtr conn ATTRIBUTE_UNUSED,
while ((direrr = virDirRead(dir, &ent, pool->def->target.path)) > 0) {
int ret;
char *backingStore;
int backingStoreFormat;
if (VIR_ALLOC(vol) < 0)
goto error;
@ -865,8 +869,6 @@ virStorageBackendFileSystemRefresh(virConnectPtr conn ATTRIBUTE_UNUSED,
goto error;
if ((ret = virStorageBackendProbeTarget(&vol->target,
&backingStore,
&backingStoreFormat,
&vol->target.encryption)) < 0) {
if (ret == -2) {
/* Silently ignore non-regular files,
@ -880,7 +882,6 @@ virStorageBackendFileSystemRefresh(virConnectPtr conn ATTRIBUTE_UNUSED,
* failed: continue with faked RAW format, since AUTO will
* break virStorageVolTargetDefFormat() generating the line
* <format type='...'/>. */
backingStoreFormat = VIR_STORAGE_FILE_RAW;
} else {
goto error;
}
@ -890,13 +891,7 @@ virStorageBackendFileSystemRefresh(virConnectPtr conn ATTRIBUTE_UNUSED,
if (vol->target.format == VIR_STORAGE_FILE_DIR)
vol->type = VIR_STORAGE_VOL_DIR;
if (backingStore != NULL) {
if (VIR_ALLOC(vol->target.backingStore) < 0)
goto error;
vol->target.backingStore->path = backingStore;
vol->target.backingStore->format = backingStoreFormat;
if (vol->target.backingStore) {
ignore_value(virStorageBackendUpdateVolTargetInfo(vol->target.backingStore,
true, false,
VIR_STORAGE_VOL_OPEN_DEFAULT));
@ -905,7 +900,6 @@ virStorageBackendFileSystemRefresh(virConnectPtr conn ATTRIBUTE_UNUSED,
* An error message was raised, but we just continue. */
}
if (VIR_APPEND_ELEMENT(pool->volumes.objs, pool->volumes.count, vol) < 0)
goto error;
}