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| H A D | block.c | diff 234ac1a9025bcfcc532449f72a97b3d4754d466c Thu Mar 02 11:43:00 CST 2017 Kevin Wolf <kwolf@redhat.com> block: Handle permission errors in change_parent_backing_link()
Instead of just trying to change parents by parent over to reference @to
instead of @from, and abort()ing whenever the permissions don't allow
this, do proper permission checking beforehand and pass any error to the
callers.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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