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swh:1:snp:38ae39f9fd01a4b0ef06fab5668b65bf4c2aca03
Revision 90563b198e4c6674c63672fae1923da467215f45 authored by Eric W. Biederman on 22 March 2013, 10:10:15 UTC, committed by Eric W. Biederman on 27 March 2013, 14:50:04 UTC 
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: stable@vger.kernel.org
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
1 parent 3151527
History
Tip revision: 0cdd776ec92c0fec768c7079331804d3e52d4b27 authored by Linus Torvalds on 15 May 2022, 15:08:51 UTC
Merge tag 'driver-core-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Tip revision: 0cdd776
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