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block: add image info query function bdrv_query_image_info()

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This patch adds function bdrv_query_image_info(), which will
retrieve image info in qmp object format. The implementation is
based on the code moved from qemu-img.c, but uses block layer
function to get snapshot info.

Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Wenchao Xia
2013-06-06 12:27:58 +08:00
committed by Stefan Hajnoczi
parent fb0ed4539c
commit 43526ec8d1
3 changed files with 46 additions and 14 deletions
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11
qemu-img.c
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@@ -1644,6 +1644,7 @@ static ImageInfoList *collect_image_info_list(const char *filename,
ImageInfoList *head = NULL;
ImageInfoList **last = &head;
GHashTable *filenames;
Error *err = NULL;
filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL);
@@ -1665,11 +1666,11 @@ static ImageInfoList *collect_image_info_list(const char *filename,
goto err;
}
info = g_new0(ImageInfo, 1);
bdrv_collect_image_info(bs, info, filename);
bdrv_query_snapshot_info_list(bs, &info->snapshots, NULL);
if (info->snapshots) {
info->has_snapshots = true;
bdrv_query_image_info(bs, &info, &err);
if (error_is_set(&err)) {
error_report("%s", error_get_pretty(err));
error_free(err);
goto err;
}
elem = g_new0(ImageInfoList, 1);