qcow2: Make qcow2_write_snapshots() public

Updating the snapshot list will be useful when upgrading a v2 image to
v3, so we will need to call this function in qcow2.c.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20191011152814.14791-6-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>

diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c
index 120cb7fa0917ab3135dac2356aef221df8cd3973..e3bf4c9776f800b73b2ca085dd11c491f2583441 100644 (file)
--- a/block/qcow2-snapshot.c
+++ b/block/qcow2-snapshot.c
@@ -164,7 +164,7 @@ fail:
 }
 
 /* add at the end of the file a new list of snapshots */
-static int qcow2_write_snapshots(BlockDriverState *bs)
+int qcow2_write_snapshots(BlockDriverState *bs)
 {
     BDRVQcow2State *s = bs->opaque;
     QCowSnapshot *sn;

diff --git a/block/qcow2.h b/block/qcow2.h
index 363681cfdc378e065ddfe3a42512ea67a78f6d36..6c7a23fdf6ca8daf27773218000d505d61641081 100644 (file)
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -716,6 +716,7 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs,
 
 void qcow2_free_snapshots(BlockDriverState *bs);
 int qcow2_read_snapshots(BlockDriverState *bs, Error **errp);
+int qcow2_write_snapshots(BlockDriverState *bs);
 
 /* qcow2-cache.c functions */
 Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables,