diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 62 |
1 files changed, 32 insertions, 30 deletions
@@ -2579,7 +2579,10 @@ static BlockDriverState *bdrv_open_inherit(const char *filename, goto fail; } if (file_bs != NULL) { - file = blk_new(BLK_PERM_CONSISTENT_READ, BLK_PERM_ALL); + /* Not requesting BLK_PERM_CONSISTENT_READ because we're only + * looking at the header to guess the image format. This works even + * in cases where a guest would not see a consistent state. */ + file = blk_new(0, BLK_PERM_ALL); blk_insert_bs(file, file_bs, &local_err); bdrv_unref(file_bs); if (local_err) { @@ -3195,6 +3198,7 @@ void bdrv_reopen_abort(BDRVReopenState *reopen_state) static void bdrv_close(BlockDriverState *bs) { BdrvAioNotifier *ban, *ban_next; + BdrvChild *child, *next; assert(!bs->job); assert(!bs->refcnt); @@ -3204,43 +3208,41 @@ static void bdrv_close(BlockDriverState *bs) bdrv_drain(bs); /* in case flush left pending I/O */ if (bs->drv) { - BdrvChild *child, *next; - bs->drv->bdrv_close(bs); bs->drv = NULL; + } - bdrv_set_backing_hd(bs, NULL, &error_abort); + bdrv_set_backing_hd(bs, NULL, &error_abort); - if (bs->file != NULL) { - bdrv_unref_child(bs, bs->file); - bs->file = NULL; - } + if (bs->file != NULL) { + bdrv_unref_child(bs, bs->file); + bs->file = NULL; + } - QLIST_FOREACH_SAFE(child, &bs->children, next, next) { - /* TODO Remove bdrv_unref() from drivers' close function and use - * bdrv_unref_child() here */ - if (child->bs->inherits_from == bs) { - child->bs->inherits_from = NULL; - } - bdrv_detach_child(child); + QLIST_FOREACH_SAFE(child, &bs->children, next, next) { + /* TODO Remove bdrv_unref() from drivers' close function and use + * bdrv_unref_child() here */ + if (child->bs->inherits_from == bs) { + child->bs->inherits_from = NULL; } - - g_free(bs->opaque); - bs->opaque = NULL; - atomic_set(&bs->copy_on_read, 0); - bs->backing_file[0] = '\0'; - bs->backing_format[0] = '\0'; - bs->total_sectors = 0; - bs->encrypted = false; - bs->sg = false; - QDECREF(bs->options); - QDECREF(bs->explicit_options); - bs->options = NULL; - bs->explicit_options = NULL; - QDECREF(bs->full_open_options); - bs->full_open_options = NULL; + bdrv_detach_child(child); } + g_free(bs->opaque); + bs->opaque = NULL; + atomic_set(&bs->copy_on_read, 0); + bs->backing_file[0] = '\0'; + bs->backing_format[0] = '\0'; + bs->total_sectors = 0; + bs->encrypted = false; + bs->sg = false; + QDECREF(bs->options); + QDECREF(bs->explicit_options); + bs->options = NULL; + bs->explicit_options = NULL; + QDECREF(bs->full_open_options); + bs->full_open_options = NULL; + bdrv_release_named_dirty_bitmaps(bs); assert(QLIST_EMPTY(&bs->dirty_bitmaps)); |