From c1cef67251d3e6ae275c0898ccf4cbcfe85d4e0b Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Tue, 14 Mar 2017 10:30:50 +0800 Subject: [PATCH] block: Always call bdrv_child_check_perm first bdrv_child_set_perm alone is not very usable because the caller must call bdrv_child_check_perm first. This is already encapsulated conveniently in bdrv_child_try_set_perm, so remove the other prototypes from the header and fix the one wrong caller, block/mirror.c. Signed-off-by: Fam Zheng Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block.c | 13 +++++++++---- block/mirror.c | 6 ++++-- include/block/block_int.h | 4 ---- 3 files changed, 13 insertions(+), 10 deletions(-) diff --git a/block.c b/block.c index cb5737073f..a77e8a064e 100644 --- a/block.c +++ b/block.c @@ -1393,6 +1393,11 @@ static int bdrv_fill_options(QDict **options, const char *filename, return 0; } +static int bdrv_child_check_perm(BdrvChild *c, uint64_t perm, uint64_t shared, + GSList *ignore_children, Error **errp); +static void bdrv_child_abort_perm_update(BdrvChild *c); +static void bdrv_child_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared); + /* * Check whether permissions on this node can be changed in a way that * @cumulative_perms and @cumulative_shared_perms are the new cumulative @@ -1615,8 +1620,8 @@ static int bdrv_check_update_perm(BlockDriverState *bs, uint64_t new_used_perm, /* Needs to be followed by a call to either bdrv_child_set_perm() or * bdrv_child_abort_perm_update(). */ -int bdrv_child_check_perm(BdrvChild *c, uint64_t perm, uint64_t shared, - GSList *ignore_children, Error **errp) +static int bdrv_child_check_perm(BdrvChild *c, uint64_t perm, uint64_t shared, + GSList *ignore_children, Error **errp) { int ret; @@ -1627,7 +1632,7 @@ int bdrv_child_check_perm(BdrvChild *c, uint64_t perm, uint64_t shared, return ret; } -void bdrv_child_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared) +static void bdrv_child_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared) { uint64_t cumulative_perms, cumulative_shared_perms; @@ -1639,7 +1644,7 @@ void bdrv_child_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared) bdrv_set_perm(c->bs, cumulative_perms, cumulative_shared_perms); } -void bdrv_child_abort_perm_update(BdrvChild *c) +static void bdrv_child_abort_perm_update(BdrvChild *c) { bdrv_abort_perm_update(c->bs); } diff --git a/block/mirror.c b/block/mirror.c index 4f3a5cb310..ca4baa510a 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -574,7 +574,8 @@ static void mirror_exit(BlockJob *job, void *opaque) * valid. Also give up permissions on mirror_top_bs->backing, which might * block the removal. */ block_job_remove_all_bdrv(job); - bdrv_child_set_perm(mirror_top_bs->backing, 0, BLK_PERM_ALL); + bdrv_child_try_set_perm(mirror_top_bs->backing, 0, BLK_PERM_ALL, + &error_abort); bdrv_replace_node(mirror_top_bs, backing_bs(mirror_top_bs), &error_abort); /* We just changed the BDS the job BB refers to (with either or both of the @@ -1245,7 +1246,8 @@ fail: block_job_unref(&s->common); } - bdrv_child_set_perm(mirror_top_bs->backing, 0, BLK_PERM_ALL); + bdrv_child_try_set_perm(mirror_top_bs->backing, 0, BLK_PERM_ALL, + &error_abort); bdrv_replace_node(mirror_top_bs, backing_bs(mirror_top_bs), &error_abort); } diff --git a/include/block/block_int.h b/include/block/block_int.h index 6c699ac9c3..59400bd848 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -889,10 +889,6 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, void *opaque, Error **errp); void bdrv_root_unref_child(BdrvChild *child); -int bdrv_child_check_perm(BdrvChild *c, uint64_t perm, uint64_t shared, - GSList *ignore_children, Error **errp); -void bdrv_child_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared); -void bdrv_child_abort_perm_update(BdrvChild *c); int bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared, Error **errp);