tree 796e6f292f50a37627c3cf806c3961e33215b610
parent 87ace5f8b6cbb9be14cf771a8962e32fd97f9660
author Max Reitz <mreitz@redhat.com> 1558544630 +0200
committer Kevin Wolf <kwolf@redhat.com> 1560868870 +0200

block: Add *tighten_restrictions to *check*_perm()

This patch makes three functions report whether the necessary permission
change tightens restrictions or not.  These functions are:
- bdrv_check_perm()
- bdrv_check_update_perm()
- bdrv_child_check_perm()

Callers can use this result to decide whether a failure is fatal or not
(see the next patch).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>