diff options
Diffstat (limited to 'block/block-backend.c')
| -rw-r--r-- | block/block-backend.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index 1ed75c6c15..0319220a78 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -120,17 +120,23 @@ static const BdrvChildRole child_root = { /* * Create a new BlockBackend with a reference count of one. - * Store an error through @errp on failure, unless it's null. + * + * @perm is a bitmasks of BLK_PERM_* constants which describes the permissions + * to request for a block driver node that is attached to this BlockBackend. + * @shared_perm is a bitmask which describes which permissions may be granted + * to other users of the attached node. + * Both sets of permissions can be changed later using blk_set_perm(). + * * Return the new BlockBackend on success, null on failure. */ -BlockBackend *blk_new(void) +BlockBackend *blk_new(uint64_t perm, uint64_t shared_perm) { BlockBackend *blk; blk = g_new0(BlockBackend, 1); blk->refcnt = 1; - blk->perm = 0; - blk->shared_perm = BLK_PERM_ALL; + blk->perm = perm; + blk->shared_perm = shared_perm; blk_set_enable_write_cache(blk, true); qemu_co_queue_init(&blk->public.throttled_reqs[0]); @@ -161,7 +167,7 @@ BlockBackend *blk_new_open(const char *filename, const char *reference, BlockBackend *blk; BlockDriverState *bs; - blk = blk_new(); + blk = blk_new(0, BLK_PERM_ALL); bs = bdrv_open(filename, reference, options, flags, errp); if (!bs) { blk_unref(blk); @@ -505,9 +511,10 @@ void blk_remove_bs(BlockBackend *blk) void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs) { bdrv_ref(bs); - /* FIXME Use real permissions */ + /* FIXME Error handling */ blk->root = bdrv_root_attach_child(bs, "root", &child_root, - 0, BLK_PERM_ALL, blk, &error_abort); + blk->perm, blk->shared_perm, blk, + &error_abort); notifier_list_notify(&blk->insert_bs_notifiers, blk); if (blk->public.throttle_state) { |