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bh=IBhxgowuQFcAUR58uqqa1WKNXK5w+PFAr5esLP1KKHs=; b=iIQN8DzNC4u7xIQWer7EONm2eQq2WKzKMt3C4YDPrilBH/vxFwPg18PaFQf9/LmlYItRYz 1pioDCLWcAqQIIKlfUesJysuJ7Q1HNVOeNV5F/RHL4NRNCapnwUPYrbxIVGfg0x1jD33ur eSLjlErTAqM6PnNOgPEN1vinburfdts= X-MC-Unique: m3vw3HT2M9iC4dpragY7tA-1 From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Subject: [PATCH v5 31/31] block.c: assertions to the block layer permissions API Date: Wed, 24 Nov 2021 01:44:18 -0500 Message-Id: <20211124064418.3120601-32-eesposit@redhat.com> In-Reply-To: <20211124064418.3120601-1-eesposit@redhat.com> References: <20211124064418.3120601-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eesposit@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Now that we "covered" the three main cases where the permission API was being used under BQL (fuse, amend and invalidate_cache), we can safely assert for the permission functions implemented in block.c Signed-off-by: Emanuele Giuseppe Esposito --- block.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/block.c b/block.c index 805974676b..6056ec4bc5 100644 --- a/block.c +++ b/block.c @@ -2138,6 +2138,7 @@ static bool bdrv_a_allow_b(BdrvChild *a, BdrvChild *b= , Error **errp) =20 assert(a->bs); assert(a->bs =3D=3D b->bs); + assert(qemu_in_main_thread()); =20 if ((b->perm & a->shared_perm) =3D=3D b->perm) { return true; @@ -2161,6 +2162,7 @@ static bool bdrv_a_allow_b(BdrvChild *a, BdrvChild *b= , Error **errp) static bool bdrv_parent_perms_conflict(BlockDriverState *bs, Error **errp) { BdrvChild *a, *b; + assert(qemu_in_main_thread()); =20 /* * During the loop we'll look at each pair twice. That's correct becau= se @@ -2245,6 +2247,8 @@ static void bdrv_child_set_perm_abort(void *opaque) { BdrvChildSetPermState *s =3D opaque; =20 + assert(qemu_in_main_thread()); + s->child->perm =3D s->old_perm; s->child->shared_perm =3D s->old_shared_perm; } @@ -2258,6 +2262,7 @@ static void bdrv_child_set_perm(BdrvChild *c, uint64_= t perm, uint64_t shared, Transaction *tran) { BdrvChildSetPermState *s =3D g_new(BdrvChildSetPermState, 1); + assert(qemu_in_main_thread()); =20 *s =3D (BdrvChildSetPermState) { .child =3D c, @@ -2442,6 +2447,7 @@ static int bdrv_node_refresh_perm(BlockDriverState *b= s, BlockReopenQueue *q, BdrvChild *c; int ret; uint64_t cumulative_perms, cumulative_shared_perms; + assert(qemu_in_main_thread()); =20 bdrv_get_cumulative_perm(bs, &cumulative_perms, &cumulative_shared_per= ms); =20 @@ -2510,6 +2516,7 @@ static int bdrv_list_refresh_perms(GSList *list, Bloc= kReopenQueue *q, { int ret; BlockDriverState *bs; + assert(qemu_in_main_thread()); =20 for ( ; list; list =3D list->next) { bs =3D list->data; @@ -2582,6 +2589,7 @@ static int bdrv_refresh_perms(BlockDriverState *bs, E= rror **errp) int ret; Transaction *tran =3D tran_new(); g_autoptr(GSList) list =3D bdrv_topological_dfs(NULL, NULL, bs); + assert(qemu_in_main_thread()); =20 ret =3D bdrv_list_refresh_perms(list, NULL, tran, errp); tran_finalize(tran, ret); @@ -2648,6 +2656,7 @@ static void bdrv_filter_default_perms(BlockDriverStat= e *bs, BdrvChild *c, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) { + assert(qemu_in_main_thread()); *nperm =3D perm & DEFAULT_PERM_PASSTHROUGH; *nshared =3D (shared & DEFAULT_PERM_PASSTHROUGH) | DEFAULT_PERM_UNCHAN= GED; } @@ -2659,6 +2668,7 @@ static void bdrv_default_perms_for_cow(BlockDriverSta= te *bs, BdrvChild *c, uint64_t *nperm, uint64_t *nshared) { assert(role & BDRV_CHILD_COW); + assert(qemu_in_main_thread()); =20 /* * We want consistent read from backing files if the parent needs it. @@ -2696,6 +2706,7 @@ static void bdrv_default_perms_for_storage(BlockDrive= rState *bs, BdrvChild *c, { int flags; =20 + assert(qemu_in_main_thread()); assert(role & (BDRV_CHILD_METADATA | BDRV_CHILD_DATA)); =20 flags =3D bdrv_reopen_get_flags(reopen_queue, bs); @@ -6094,6 +6105,7 @@ static void xdbg_graph_add_edge(XDbgBlockGraphConstru= ctor *gr, void *parent, { BlockPermission qapi_perm; XDbgBlockGraphEdge *edge; + assert(qemu_in_main_thread()); =20 edge =3D g_new0(XDbgBlockGraphEdge, 1); =20 --=20 2.27.0