@@ -2846,6 +2846,123 @@ int coroutine_fn bdrv_co_is_allocated_above(BlockDriverState *top,
return 0;
}
+SnapshotInfoList *bdrv_query_snapshot_infolist(BlockDriverState *bs,
+ SnapshotFilterFunc filter,
+ void *opaque,
+ Error **errp)
+{
+ int i, sn_count;
+ QEMUSnapshotInfo *sn_tab = NULL;
+ SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL;
+ sn_count = bdrv_snapshot_list(bs, &sn_tab);
+ if (sn_count < 0) {
+ if (errp != NULL) {
+ error_setg(errp, "bdrv_snapshot_list: error %d\n", sn_count);
+ }
+ return NULL;
+ }
+
+ for (i = 0; i < sn_count; i++) {
+ if (filter && filter(&sn_tab[i], opaque) != 0) {
+ continue;
+ }
+
+ info_list = g_new0(SnapshotInfoList, 1);
+
+ 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;
+
+ /* XXX: waiting for the qapi to support qemu-queue.h types */
+ if (!cur_item) {
+ head = cur_item = info_list;
+ } else {
+ cur_item->next = info_list;
+ cur_item = info_list;
+ }
+
+ }
+
+ g_free(sn_tab);
+ return head;
+}
+
+/* collect all internal snapshot info in a image for ImageInfo */
+static void collect_snapshots_info(BlockDriverState *bs,
+ ImageInfo *info,
+ Error **errp)
+{
+ SnapshotInfoList *info_list;
+
+ info_list = bdrv_query_snapshot_infolist(bs, NULL, NULL, errp);
+ if (info_list != NULL) {
+ info->has_snapshots = true;
+ info->snapshots = info_list;
+ }
+ return;
+}
+
+static void collect_image_info(BlockDriverState *bs,
+ ImageInfo *info)
+{
+ uint64_t total_sectors;
+ char backing_filename[1024];
+ char backing_filename2[1024];
+ BlockDriverInfo bdi;
+ const char *filename;
+
+ filename = bdrv_get_filename(bs);
+ bdrv_get_geometry(bs, &total_sectors);
+
+ info->filename = g_strdup(filename);
+ info->format = g_strdup(bdrv_get_format_name(bs));
+ info->virtual_size = total_sectors * 512;
+ info->actual_size = bdrv_get_allocated_file_size(bs);
+ info->has_actual_size = info->actual_size >= 0;
+ if (bdrv_is_encrypted(bs)) {
+ info->encrypted = true;
+ info->has_encrypted = true;
+ }
+ if (bdrv_get_info(bs, &bdi) >= 0) {
+ if (bdi.cluster_size != 0) {
+ info->cluster_size = bdi.cluster_size;
+ info->has_cluster_size = true;
+ }
+ info->dirty_flag = bdi.is_dirty;
+ info->has_dirty_flag = true;
+ }
+ bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
+ if (backing_filename[0] != '\0') {
+ info->backing_filename = g_strdup(backing_filename);
+ info->has_backing_filename = true;
+ bdrv_get_full_backing_filename(bs, backing_filename2,
+ sizeof(backing_filename2));
+
+ if (strcmp(backing_filename, backing_filename2) != 0) {
+ info->full_backing_filename = g_strdup(backing_filename2);
+ info->has_full_backing_filename = true;
+ }
+
+ if (bs->backing_format[0]) {
+ info->backing_filename_format = g_strdup(bs->backing_format);
+ info->has_backing_filename_format = true;
+ }
+ }
+}
+
+ImageInfo *bdrv_query_image_info(BlockDriverState *bs, Error **errp)
+{
+ ImageInfo *info = g_new0(ImageInfo, 1);
+ collect_image_info(bs, info);
+ collect_snapshots_info(bs, info, errp);
+ return info;
+}
+
BlockInfo *bdrv_query_info(BlockDriverState *bs)
{
BlockInfo *info = g_malloc0(sizeof(*info));
@@ -316,8 +316,17 @@ void bdrv_get_backing_filename(BlockDriverState *bs,
char *filename, int filename_size);
void bdrv_get_full_backing_filename(BlockDriverState *bs,
char *dest, size_t sz);
+
+typedef int (*SnapshotFilterFunc)(const QEMUSnapshotInfo *sn, void *opaque);
+/* assume bs is already opened, use qapi_free_* to free returned value. */
+SnapshotInfoList *bdrv_query_snapshot_infolist(BlockDriverState *bs,
+ SnapshotFilterFunc filter,
+ void *opaque,
+ Error **errp);
+ImageInfo *bdrv_query_image_info(BlockDriverState *bs, Error **errp);
BlockInfo *bdrv_query_info(BlockDriverState *s);
BlockStats *bdrv_query_stats(const BlockDriverState *bs);
+
int bdrv_can_snapshot(BlockDriverState *bs);
int bdrv_is_snapshot(BlockDriverState *bs);
BlockDriverState *bdrv_snapshots(void);
This patch added function bdrv_query_image_info() and bdrv_query_snapshot_infolist(), which will return info in qmp object format. The implemetion code are mostly copied from collect_image_info() and collect_snapshot() in qemu-img.c. To help filter out snapshot info not needed, a call back function is added in bdrv_query_snapshot_infolist(). v2: Seperate patch for adding these functions. Spelling fix. Coding style fix due to comments from Eric. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> --- block.c | 117 +++++++++++++++++++++++++++++++++++++++++++++++++ include/block/block.h | 9 ++++ 2 files changed, 126 insertions(+), 0 deletions(-)