| commit | 90563b198e4c6674c63672fae1923da467215f45 | [log] [tgz] |
|---|---|---|
| author | Eric W. Biederman <[email protected]> | Fri Mar 22 03:10:15 2013 -0700 |
| committer | Eric W. Biederman <[email protected]> | Wed Mar 27 07:50:04 2013 -0700 |
| tree | aa8528c1c23dccbeca409059ec5f5d21ca1318bf | |
| parent | 3151527ee007b73a0ebd296010f1c0454a919c7d [diff] |
vfs: Add a mount flag to lock read only bind mounts When a read-only bind mount is copied from mount namespace in a higher privileged user namespace to a mount namespace in a lesser privileged user namespace, it should not be possible to remove the the read-only restriction. Add a MNT_LOCK_READONLY mount flag to indicate that a mount must remain read-only. CC: [email protected] Acked-by: Serge Hallyn <[email protected]> Signed-off-by: "Eric W. Biederman" <[email protected]>