diff options
Diffstat (limited to 'block/qcow2-bitmap.c')
| -rw-r--r-- | block/qcow2-bitmap.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 3c9dcaf0a2..9452e9fe76 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -962,25 +962,27 @@ static void set_readonly_helper(gpointer bitmap, gpointer value) bdrv_dirty_bitmap_set_readonly(bitmap, (bool)value); } -/* qcow2_load_dirty_bitmaps() - * Return value is a hint for caller: true means that the Qcow2 header was - * updated. (false doesn't mean that the header should be updated by the - * caller, it just means that updating was not needed or the image cannot be - * written to). - * On failure the function returns false. +/* + * Return true on success, false on failure. + * If header_updated is not NULL then it is set appropriately regardless of + * the return value. */ -bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, Error **errp) +bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, bool *header_updated, + Error **errp) { BDRVQcow2State *s = bs->opaque; Qcow2BitmapList *bm_list; Qcow2Bitmap *bm; GSList *created_dirty_bitmaps = NULL; - bool header_updated = false; bool needs_update = false; + if (header_updated) { + *header_updated = false; + } + if (s->nb_bitmaps == 0) { /* No bitmaps - nothing to do */ - return false; + return true; } bm_list = bitmap_list_load(bs, s->bitmap_directory_offset, @@ -1036,7 +1038,9 @@ bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, Error **errp) error_setg_errno(errp, -ret, "Can't update bitmap directory"); goto fail; } - header_updated = true; + if (header_updated) { + *header_updated = true; + } } if (!can_write(bs)) { @@ -1047,7 +1051,7 @@ bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, Error **errp) g_slist_free(created_dirty_bitmaps); bitmap_list_free(bm_list); - return header_updated; + return true; fail: g_slist_foreach(created_dirty_bitmaps, release_dirty_bitmap_helper, bs); |