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[Qemu-devel] [PATCH 21/54] block: Require .bdrv_child_perm() with child
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH 21/54] block: Require .bdrv_child_perm() with child nodes |
Date: |
Tue, 21 Feb 2017 15:58:17 +0100 |
All block drivers that can have child nodes implement .bdrv_child_perm()
now. Make this officially a requirement by asserting that only drivers
without children can omit .bdrv_child_perm().
Signed-off-by: Kevin Wolf <address@hidden>
---
block.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/block.c b/block.c
index 6d1362e..1c5f211 100644
--- a/block.c
+++ b/block.c
@@ -1361,8 +1361,9 @@ static int bdrv_check_perm(BlockDriverState *bs, uint64_t
cumulative_perms,
cumulative_shared_perms, errp);
}
- /* Drivers may not have .bdrv_child_perm() */
+ /* Drivers that never have children can omit .bdrv_child_perm() */
if (!drv->bdrv_child_perm) {
+ assert(QLIST_EMPTY(&bs->children));
return 0;
}
@@ -1421,8 +1422,9 @@ static void bdrv_set_perm(BlockDriverState *bs, uint64_t
cumulative_perms,
drv->bdrv_set_perm(bs, cumulative_perms, cumulative_shared_perms);
}
- /* Drivers may not have .bdrv_child_perm() */
+ /* Drivers that never have children can omit .bdrv_child_perm() */
if (!drv->bdrv_child_perm) {
+ assert(QLIST_EMPTY(&bs->children));
return;
}
--
1.8.3.1
- Re: [Qemu-devel] [PATCH 18/54] block: Default .bdrv_child_perm() for format drivers, (continued)
[Qemu-devel] [PATCH 19/54] block: Request child permissions in format drivers, Kevin Wolf, 2017/02/21
[Qemu-devel] [PATCH 20/54] vvfat: Implement .bdrv_child_perm(), Kevin Wolf, 2017/02/21
[Qemu-devel] [PATCH 21/54] block: Require .bdrv_child_perm() with child nodes,
Kevin Wolf <=
[Qemu-devel] [PATCH 22/54] block: Request real permissions in bdrv_attach_child(), Kevin Wolf, 2017/02/21
[Qemu-devel] [PATCH 23/54] block: Add permissions to BlockBackend, Kevin Wolf, 2017/02/21
[Qemu-devel] [PATCH 27/54] block: Request real permissions in blk_new_open(), Kevin Wolf, 2017/02/21
[Qemu-devel] [PATCH 24/54] block: Add permissions to blk_new(), Kevin Wolf, 2017/02/21