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block: Request child permissions in filter drivers

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All callers will have to request permissions for all of their child
nodes. Block drivers that act as simply filters can use the default
implementation of .bdrv_child_perm().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Kevin Wolf 2016-12-15 12:28:58 +01:00
parent 6a1b9ee152
commit d7010dfb68
6 changed files with 8 additions and 0 deletions
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2
block/blkdebug.c
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@ -734,6 +734,8 @@ static BlockDriver bdrv_blkdebug = {
.bdrv_file_open = blkdebug_open,
.bdrv_close = blkdebug_close,
.bdrv_reopen_prepare = blkdebug_reopen_prepare,
.bdrv_child_perm = bdrv_filter_default_perms,
.bdrv_getlength = blkdebug_getlength,
.bdrv_truncate = blkdebug_truncate,
.bdrv_refresh_filename = blkdebug_refresh_filename,