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Tue, 4 Feb 2020 17:09:05 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH v2 05/33] block: Pass BdrvChildRole to bdrv_child_perm() Date: Tue, 4 Feb 2020 18:08:20 +0100 Message-Id: <20200204170848.614480-6-mreitz@redhat.com> In-Reply-To: <20200204170848.614480-1-mreitz@redhat.com> References: <20200204170848.614480-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: _g7HyTpgOQq7qhU372a32g-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Max Reitz Reviewed-by: Eric Blake --- block.c | 22 ++++++++++++---------- block/backup-top.c | 3 ++- block/blkdebug.c | 5 +++-- block/blklogwrites.c | 9 +++++---- block/commit.c | 1 + block/copy-on-read.c | 1 + block/mirror.c | 1 + block/quorum.c | 1 + block/replication.c | 1 + block/vvfat.c | 1 + include/block/block_int.h | 5 ++++- tests/test-bdrv-drain.c | 5 +++-- tests/test-bdrv-graph-mod.c | 1 + 13 files changed, 36 insertions(+), 20 deletions(-) diff --git a/block.c b/block.c index c576377650..7fa7830428 100644 --- a/block.c +++ b/block.c @@ -1764,12 +1764,12 @@ bool bdrv_is_writable(BlockDriverState *bs) static void bdrv_child_perm(BlockDriverState *bs, BlockDriverState *child_bs, BdrvChild *c, const BdrvChildClass *child_class, - BlockReopenQueue *reopen_queue, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t parent_perm, uint64_t parent_shared, uint64_t *nperm, uint64_t *nshared) { assert(bs->drv && bs->drv->bdrv_child_perm); - bs->drv->bdrv_child_perm(bs, c, child_class, reopen_queue, + bs->drv->bdrv_child_perm(bs, c, child_class, role, reopen_queue, parent_perm, parent_shared, nperm, nshared); /* TODO Take force_share from reopen_queue */ @@ -1863,7 +1863,7 @@ static int bdrv_check_perm(BlockDriverState *bs, BlockReopenQueue *q, uint64_t cur_perm, cur_shared; bool child_tighten_restr; - bdrv_child_perm(bs, c->bs, c, c->klass, q, + bdrv_child_perm(bs, c->bs, c, c->klass, c->role, q, cumulative_perms, cumulative_shared_perms, &cur_perm, &cur_shared); ret = bdrv_child_check_perm(c, q, cur_perm, cur_shared, ignore_children, @@ -1930,7 +1930,7 @@ static void bdrv_set_perm(BlockDriverState *bs, uint64_t cumulative_perms, /* Update all children */ QLIST_FOREACH(c, &bs->children, next) { uint64_t cur_perm, cur_shared; - bdrv_child_perm(bs, c->bs, c, c->klass, NULL, + bdrv_child_perm(bs, c->bs, c, c->klass, c->role, NULL, cumulative_perms, cumulative_shared_perms, &cur_perm, &cur_shared); bdrv_child_set_perm(c, cur_perm, cur_shared); @@ -2158,14 +2158,15 @@ int bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp) uint64_t perms, shared; bdrv_get_cumulative_perm(bs, &parent_perms, &parent_shared); - bdrv_child_perm(bs, c->bs, c, c->klass, NULL, parent_perms, parent_shared, - &perms, &shared); + bdrv_child_perm(bs, c->bs, c, c->klass, c->role, NULL, + parent_perms, parent_shared, &perms, &shared); return bdrv_child_try_set_perm(c, perms, shared, errp); } void bdrv_filter_default_perms(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) @@ -2176,6 +2177,7 @@ void bdrv_filter_default_perms(BlockDriverState *bs, BdrvChild *c, void bdrv_format_default_perms(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) @@ -2188,7 +2190,7 @@ void bdrv_format_default_perms(BlockDriverState *bs, BdrvChild *c, /* Apart from the modifications below, the same permissions are * forwarded and left alone as for filters */ - bdrv_filter_default_perms(bs, c, child_class, reopen_queue, + bdrv_filter_default_perms(bs, c, child_class, role, reopen_queue, perm, shared, &perm, &shared); /* Format drivers may touch metadata even if the guest doesn't write */ @@ -2464,7 +2466,7 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, bdrv_get_cumulative_perm(parent_bs, &perm, &shared_perm); assert(parent_bs->drv); - bdrv_child_perm(parent_bs, child_bs, NULL, child_class, NULL, + bdrv_child_perm(parent_bs, child_bs, NULL, child_class, child_role, NULL, perm, shared_perm, &perm, &shared_perm); child = bdrv_root_attach_child(child_bs, child_name, child_class, @@ -3502,7 +3504,7 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp) if (state->replace_backing_bs && state->new_backing_bs) { uint64_t nperm, nshared; bdrv_child_perm(state->bs, state->new_backing_bs, - NULL, &child_backing, bs_queue, + NULL, &child_backing, 0, bs_queue, state->perm, state->shared_perm, &nperm, &nshared); ret = bdrv_check_update_perm(state->new_backing_bs, NULL, @@ -3616,7 +3618,7 @@ static void bdrv_reopen_perm(BlockReopenQueue *q, BlockDriverState *bs, } else { uint64_t nperm, nshared; - bdrv_child_perm(parent->state.bs, bs, c, c->klass, q, + bdrv_child_perm(parent->state.bs, bs, c, c->klass, c->role, q, parent->state.perm, parent->state.shared_perm, &nperm, &nshared); diff --git a/block/backup-top.c b/block/backup-top.c index 3c812358ce..36ed71413b 100644 --- a/block/backup-top.c +++ b/block/backup-top.c @@ -118,6 +118,7 @@ static void backup_top_refresh_filename(BlockDriverState *bs) static void backup_top_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) @@ -148,7 +149,7 @@ static void backup_top_child_perm(BlockDriverState *bs, BdrvChild *c, *nperm = BLK_PERM_WRITE; } else { /* Source child */ - bdrv_filter_default_perms(bs, c, child_class, reopen_queue, + bdrv_filter_default_perms(bs, c, child_class, role, reopen_queue, perm, shared, nperm, nshared); if (perm & BLK_PERM_WRITE) { diff --git a/block/blkdebug.c b/block/blkdebug.c index c91e78d5c8..8dd8ed6055 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -994,14 +994,15 @@ static int blkdebug_reopen_prepare(BDRVReopenState *reopen_state, static void blkdebug_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) { BDRVBlkdebugState *s = bs->opaque; - bdrv_filter_default_perms(bs, c, child_class, reopen_queue, perm, shared, - nperm, nshared); + bdrv_filter_default_perms(bs, c, child_class, role, reopen_queue, + perm, shared, nperm, nshared); *nperm |= s->take_child_perms; *nshared &= ~s->unshare_child_perms; diff --git a/block/blklogwrites.c b/block/blklogwrites.c index 739db6dcf6..4faf912ef1 100644 --- a/block/blklogwrites.c +++ b/block/blklogwrites.c @@ -283,6 +283,7 @@ static int64_t blk_log_writes_getlength(BlockDriverState *bs) static void blk_log_writes_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *ro_q, uint64_t perm, uint64_t shrd, uint64_t *nperm, uint64_t *nshrd) @@ -294,11 +295,11 @@ static void blk_log_writes_child_perm(BlockDriverState *bs, BdrvChild *c, } if (!strcmp(c->name, "log")) { - bdrv_format_default_perms(bs, c, child_class, ro_q, perm, shrd, nperm, - nshrd); + bdrv_format_default_perms(bs, c, child_class, role, ro_q, perm, shrd, + nperm, nshrd); } else { - bdrv_filter_default_perms(bs, c, child_class, ro_q, perm, shrd, nperm, - nshrd); + bdrv_filter_default_perms(bs, c, child_class, role, ro_q, perm, shrd, + nperm, nshrd); } } diff --git a/block/commit.c b/block/commit.c index f2ccb11874..e0cbe46d75 100644 --- a/block/commit.c +++ b/block/commit.c @@ -237,6 +237,7 @@ static void bdrv_commit_top_refresh_filename(BlockDriverState *bs) static void bdrv_commit_top_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) diff --git a/block/copy-on-read.c b/block/copy-on-read.c index a2c4e6dc58..a2d92ac394 100644 --- a/block/copy-on-read.c +++ b/block/copy-on-read.c @@ -52,6 +52,7 @@ static int cor_open(BlockDriverState *bs, QDict *options, int flags, static void cor_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) diff --git a/block/mirror.c b/block/mirror.c index d8506af45a..25c5e8b622 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -1485,6 +1485,7 @@ static void bdrv_mirror_top_refresh_filename(BlockDriverState *bs) static void bdrv_mirror_top_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) diff --git a/block/quorum.c b/block/quorum.c index e53d02bbcd..62fe37856d 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -1170,6 +1170,7 @@ static char *quorum_dirname(BlockDriverState *bs, Error **errp) static void quorum_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) diff --git a/block/replication.c b/block/replication.c index c05df1bc16..9ca5c9368e 100644 --- a/block/replication.c +++ b/block/replication.c @@ -161,6 +161,7 @@ static void replication_close(BlockDriverState *bs) static void replication_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) diff --git a/block/vvfat.c b/block/vvfat.c index 0c0b224947..e9f64b0b24 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -3220,6 +3220,7 @@ err: static void vvfat_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) diff --git a/include/block/block_int.h b/include/block/block_int.h index 4817c2d38c..24f4f65593 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -556,7 +556,7 @@ struct BlockDriver { * the parents in @parent_perm and @parent_shared. * * If @c is NULL, return the permissions for attaching a new child for the - * given @child_class. + * given @child_class and @role. * * If @reopen_queue is non-NULL, don't return the currently needed * permissions, but those that will be needed after applying the @@ -564,6 +564,7 @@ struct BlockDriver { */ void (*bdrv_child_perm)(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t parent_perm, uint64_t parent_shared, uint64_t *nperm, uint64_t *nshared); @@ -1258,6 +1259,7 @@ int bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp); * all children */ void bdrv_filter_default_perms(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole child_role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared); @@ -1268,6 +1270,7 @@ void bdrv_filter_default_perms(BlockDriverState *bs, BdrvChild *c, * CONSISTENT_READ and doesn't share WRITE. */ void bdrv_format_default_perms(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole child_role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared); diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c index c03705ea37..b3d7960bd0 100644 --- a/tests/test-bdrv-drain.c +++ b/tests/test-bdrv-drain.c @@ -87,6 +87,7 @@ static int coroutine_fn bdrv_test_co_preadv(BlockDriverState *bs, static void bdrv_test_child_perm(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) @@ -99,8 +100,8 @@ static void bdrv_test_child_perm(BlockDriverState *bs, BdrvChild *c, child_class = &child_file; } - bdrv_format_default_perms(bs, c, child_class, reopen_queue, perm, shared, - nperm, nshared); + bdrv_format_default_perms(bs, c, child_class, role, reopen_queue, + perm, shared, nperm, nshared); } static int bdrv_test_change_backing_file(BlockDriverState *bs, diff --git a/tests/test-bdrv-graph-mod.c b/tests/test-bdrv-graph-mod.c index 8b8c186c9f..3707e2533c 100644 --- a/tests/test-bdrv-graph-mod.c +++ b/tests/test-bdrv-graph-mod.c @@ -31,6 +31,7 @@ static BlockDriver bdrv_pass_through = { static void no_perm_default_perms(BlockDriverState *bs, BdrvChild *c, const BdrvChildClass *child_class, + BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared)