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UBUNTU: SAUCE: shiftfs: lock down certain superblock flags
authorChristian Brauner <christian@brauner.io>
Wed, 8 May 2019 12:13:14 +0000 (14:13 +0200)
committerPaolo Pisati <paolo.pisati@canonical.com>
Tue, 2 Nov 2021 07:24:45 +0000 (08:24 +0100)
commit40b373d663ad86ad5030b65930a96b9e29a237bc
tree228494326fe9d2edfbbe3c50798ee5fe5f251db6tree
parent958069e8e4e31d8cf10a73203482be474110a7afcommit | diff
UBUNTU: SAUCE: shiftfs: lock down certain superblock flags

BugLink: https://bugs.launchpad.net/bugs/1827122
This locks down various superblock flags to prevent userns-root from
remounting a superblock with less restrictive options than the original
mark or underlay mount.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
fs/shiftfs.c diff | blob | blame | history
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