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author | Eric W. Biederman <ebiederm@xmission.com> | 2015-05-08 23:22:29 -0500 |
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committer | Sasha Levin <sasha.levin@oracle.com> | 2015-07-12 09:49:24 -0400 |
commit | 78ee73651f6e3f0b53ca6e00615c2ca43a57174e (patch) | |
tree | 70b5f457655866b2bf20d5152e777985c02f790a /.mailmap | |
parent | 866cebe251f4fb2b435f4ecfe6d3bb4025938533 (diff) |
mnt: Refactor the logic for mounting sysfs and proc in a user namespace
[ Upstream commit 1b852bceb0d111e510d1a15826ecc4a19358d512 ]
Fresh mounts of proc and sysfs are a very special case that works very
much like a bind mount. Unfortunately the current structure can not
preserve the MNT_LOCK... mount flags. Therefore refactor the logic
into a form that can be modified to preserve those lock bits.
Add a new filesystem flag FS_USERNS_VISIBLE that requires some mount
of the filesystem be fully visible in the current mount namespace,
before the filesystem may be mounted.
Move the logic for calling fs_fully_visible from proc and sysfs into
fs/namespace.c where it has greater access to mount namespace state.
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to '.mailmap')
0 files changed, 0 insertions, 0 deletions