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block: bdrv_check_perm(): process children anyway

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Do generic processing even for drivers which define .bdrv_check_perm
handler. It's needed for further preallocate filter: it will need to do
additional action on bdrv_check_perm, but don't want to reimplement
generic logic.

The patch doesn't change existing behaviour: the only driver that
implements bdrv_check_perm is file-posix, but it never has any
children.

Also, bdrv_set_perm() don't stop processing if driver has
.bdrv_set_perm handler as well.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201021145859.11201-8-vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-10-21 17:58:45 +03:00 committed by Max Reitz
parent d1a764d126
commit 9530a25b8b
1 changed files with 5 additions and 2 deletions
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7
block.c
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@ -2028,8 +2028,11 @@ static int bdrv_check_perm(BlockDriverState *bs, BlockReopenQueue *q,
}
if (drv->bdrv_check_perm) {
return drv->bdrv_check_perm(bs, cumulative_perms,
cumulative_shared_perms, errp);
ret = drv->bdrv_check_perm(bs, cumulative_perms,
cumulative_shared_perms, errp);
if (ret < 0) {
return ret;
}
}
/* Drivers that never have children can omit .bdrv_child_perm() */