static void bdrv_close(BlockDriverState *bs)
{
BdrvAioNotifier *ban, *ban_next;
+ BdrvChild *child, *next;
assert(!bs->job);
assert(!bs->refcnt);
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));
back_flags = flags;
back_flags &= ~(BDRV_O_RDWR | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING);
+ backing_options = qdict_new();
if (backing_fmt) {
- backing_options = qdict_new();
qdict_put_str(backing_options, "driver", backing_fmt);
}
+ qdict_put_bool(backing_options, BDRV_OPT_FORCE_SHARE, true);
bs = bdrv_open(full_backing, NULL, backing_options, back_flags,
&local_err);