3:20 a.m.
---
src/conf/snapshot_conf.c | 131 ++++++++++++++++++++++++++++-------------------
1 file changed, 77 insertions(+), 54 deletions(-)
diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c
index 65a78d6..da6fec5 100644
--- a/src/conf/snapshot_conf.c
+++ b/src/conf/snapshot_conf.c
@@ -429,6 +429,80 @@ virDomainSnapshotDefParseString(const char *xmlStr,
return ret;
}
+
+/**
+ * virDomainSnapshotDefAssignExternalNames:
+ * @def: snapshot def object
+ *
+ * Generate default external file names for snapshot targets. Returns 0 on
+ * success, -1 on error.
+ */
+static int
+virDomainSnapshotDefAssignExternalNames(virDomainSnapshotDefPtr def)
+{
+ size_t i;
+ int ret = -1;
+
+ for (i = 0; i < def->ndisks; i++) {
+ virDomainSnapshotDiskDefPtr disk = &def->disks[i];
+
+ if (disk->snapshot == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL &&
+ !disk->src->path) {
+ const char *original = virDomainDiskGetSource(def->dom->disks[i]);
+ const char *tmp;
+ struct stat sb;
+
+ if (disk->src->type != VIR_STORAGE_TYPE_FILE) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("cannot generate external snapshot name "
+ "for disk '%s' on a '%s'
device"),
+ disk->name,
+ virStorageTypeToString(disk->src->type));
+ goto cleanup;
+ }
+
+ if (!original) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("cannot generate external snapshot name "
+ "for disk '%s' without source"),
+ disk->name);
+ goto cleanup;
+ }
+ if (stat(original, &sb) < 0 || !S_ISREG(sb.st_mode)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("source for disk '%s' is not a regular
"
+ "file; refusing to generate external "
+ "snapshot name"),
+ disk->name);
+ goto cleanup;
+ }
+
+ tmp = strrchr(original, '.');
+ if (!tmp || strchr(tmp, '/')) {
+ if (virAsprintf(&disk->src->path, "%s.%s", original,
+ def->name) < 0)
+ goto cleanup;
+ } else {
+ if ((tmp - original) > INT_MAX) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("integer overflow"));
+ goto cleanup;
+ }
+ if (virAsprintf(&disk->src->path, "%.*s.%s",
+ (int) (tmp - original), original,
+ def->name) < 0)
+ goto cleanup;
+ }
+ }
+ }
+
+ ret = 0;
+
+ cleanup:
+ return ret;
+}
+
+
static int
virDomainSnapshotCompareDiskIndex(const void *a, const void *b)
{
@@ -565,60 +639,9 @@ virDomainSnapshotAlignDisks(virDomainSnapshotDefPtr def,
qsort(&def->disks[0], def->ndisks, sizeof(def->disks[0]),
virDomainSnapshotCompareDiskIndex);
- /* Generate any default external file names, but only if the
- * backing file is a regular file. */
- for (i = 0; i < def->ndisks; i++) {
- virDomainSnapshotDiskDefPtr disk = &def->disks[i];
-
- if (disk->snapshot == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL &&
- !disk->src->path) {
- const char *original = virDomainDiskGetSource(def->dom->disks[i]);
- const char *tmp;
- struct stat sb;
-
- if (disk->src->type != VIR_STORAGE_TYPE_FILE) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
- _("cannot generate external snapshot name "
- "for disk '%s' on a '%s'
device"),
- disk->name,
- virStorageTypeToString(disk->src->type));
- goto cleanup;
- }
-
- if (!original) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
- _("cannot generate external snapshot name "
- "for disk '%s' without source"),
- disk->name);
- goto cleanup;
- }
- if (stat(original, &sb) < 0 || !S_ISREG(sb.st_mode)) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
- _("source for disk '%s' is not a regular
"
- "file; refusing to generate external "
- "snapshot name"),
- disk->name);
- goto cleanup;
- }
-
- tmp = strrchr(original, '.');
- if (!tmp || strchr(tmp, '/')) {
- if (virAsprintf(&disk->src->path, "%s.%s", original,
- def->name) < 0)
- goto cleanup;
- } else {
- if ((tmp - original) > INT_MAX) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("integer overflow"));
- goto cleanup;
- }
- if (virAsprintf(&disk->src->path, "%.*s.%s",
- (int) (tmp - original), original,
- def->name) < 0)
- goto cleanup;
- }
- }
- }
+ /* Generate default external file names for external snapshot locations */
+ if (virDomainSnapshotDefAssignExternalNames(def) < 0)
+ goto cleanup;
ret = 0;
--
2.6.2