tree 7e03ed05fdfae31da74e34856d2f9c718f896c6e
parent 8b31f456c72e53ee97474a538bcd91bfb1b93fb7
author Vivek Goyal <vgoyal@redhat.com> 1468422836 -0400
committer Paul Moore <paul@paul-moore.com> 1470701213 -0400

security, overlayfs: provide copy up security hook for unioned files

Provide a security hook to label new file correctly when a file is copied
up from lower layer to upper layer of a overlay/union mount.

This hook can prepare a new set of creds which are suitable for new file
creation during copy up. Caller will use new creds to create file and then
revert back to old creds and release new creds.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
[PM: whitespace cleanup to appease checkpatch.pl]
Signed-off-by: Paul Moore <paul@paul-moore.com>