diff options
| -rw-r--r-- | block/qapi.c | 55 | ||||
| -rw-r--r-- | include/block/qapi.h | 4 | ||||
| -rw-r--r-- | qemu-img.c | 5 |
3 files changed, 49 insertions, 15 deletions
diff --git a/block/qapi.c b/block/qapi.c index 794dbf8fe8..1ed56da50c 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -26,29 +26,56 @@ #include "block/block_int.h" #include "qmp-commands.h" -void bdrv_collect_snapshots(BlockDriverState *bs , ImageInfo *info) +/* + * Returns 0 on success, with *p_list either set to describe snapshot + * information, or NULL because there are no snapshots. Returns -errno on + * error, with *p_list untouched. + */ +int bdrv_query_snapshot_info_list(BlockDriverState *bs, + SnapshotInfoList **p_list, + Error **errp) { int i, sn_count; QEMUSnapshotInfo *sn_tab = NULL; - SnapshotInfoList *info_list, *cur_item = NULL; + SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL; + SnapshotInfo *info; + sn_count = bdrv_snapshot_list(bs, &sn_tab); + if (sn_count < 0) { + const char *dev = bdrv_get_device_name(bs); + switch (sn_count) { + case -ENOMEDIUM: + error_setg(errp, "Device '%s' is not inserted", dev); + break; + case -ENOTSUP: + error_setg(errp, + "Device '%s' does not support internal snapshots", + dev); + break; + default: + error_setg_errno(errp, -sn_count, + "Can't list snapshots of device '%s'", dev); + break; + } + return sn_count; + } for (i = 0; i < sn_count; i++) { - info->has_snapshots = true; - info_list = g_new0(SnapshotInfoList, 1); + info = g_new0(SnapshotInfo, 1); + info->id = g_strdup(sn_tab[i].id_str); + info->name = g_strdup(sn_tab[i].name); + info->vm_state_size = sn_tab[i].vm_state_size; + info->date_sec = sn_tab[i].date_sec; + info->date_nsec = sn_tab[i].date_nsec; + info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; + info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; - info_list->value = g_new0(SnapshotInfo, 1); - info_list->value->id = g_strdup(sn_tab[i].id_str); - info_list->value->name = g_strdup(sn_tab[i].name); - info_list->value->vm_state_size = sn_tab[i].vm_state_size; - info_list->value->date_sec = sn_tab[i].date_sec; - info_list->value->date_nsec = sn_tab[i].date_nsec; - info_list->value->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; - info_list->value->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; + info_list = g_new0(SnapshotInfoList, 1); + info_list->value = info; /* XXX: waiting for the qapi to support qemu-queue.h types */ if (!cur_item) { - info->snapshots = cur_item = info_list; + head = cur_item = info_list; } else { cur_item->next = info_list; cur_item = info_list; @@ -57,6 +84,8 @@ void bdrv_collect_snapshots(BlockDriverState *bs , ImageInfo *info) } g_free(sn_tab); + *p_list = head; + return 0; } void bdrv_collect_image_info(BlockDriverState *bs, diff --git a/include/block/qapi.h b/include/block/qapi.h index e6e568da94..4f223d1ce4 100644 --- a/include/block/qapi.h +++ b/include/block/qapi.h @@ -29,7 +29,9 @@ #include "block/block.h" #include "block/snapshot.h" -void bdrv_collect_snapshots(BlockDriverState *bs , ImageInfo *info); +int bdrv_query_snapshot_info_list(BlockDriverState *bs, + SnapshotInfoList **p_list, + Error **errp); void bdrv_collect_image_info(BlockDriverState *bs, ImageInfo *info, const char *filename); diff --git a/qemu-img.c b/qemu-img.c index e089c7860b..e3d8fe3c77 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1667,7 +1667,10 @@ static ImageInfoList *collect_image_info_list(const char *filename, info = g_new0(ImageInfo, 1); bdrv_collect_image_info(bs, info, filename); - bdrv_collect_snapshots(bs, info); + bdrv_query_snapshot_info_list(bs, &info->snapshots, NULL); + if (info->snapshots) { + info->has_snapshots = true; + } elem = g_new0(ImageInfoList, 1); elem->value = info; |