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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2012-08-20 17:28:58 -0700 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2013-01-26 22:22:21 -0800 |
| commit | ec2aa8e8dd7d35524a68c89b9e7ceb07fb002561 (patch) | |
| tree | e6dccae5db69231b9f7c4bd362bed2031de7516a /fs/ramfs | |
| parent | userns: Recommend use of memory control groups. (diff) | |
| download | linux-dev-ec2aa8e8dd7d35524a68c89b9e7ceb07fb002561.tar.xz linux-dev-ec2aa8e8dd7d35524a68c89b9e7ceb07fb002561.zip | |
userns: Allow the userns root to mount of devpts
- The context in which devpts is mounted has no effect on the creation
of ptys as the /dev/ptmx interface has been used by unprivileged
users for many years.
- Only support unprivileged mounts in combination with the newinstance
option to ensure that mounting of /dev/pts in a user namespace will
not allow the options of an existing mount of devpts to be modified.
- Create /dev/pts/ptmx as the root user in the user namespace that
mounts devpts so that it's permissions to be changed.
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/ramfs')
0 files changed, 0 insertions, 0 deletions