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| author | Eric W. Biederman <ebiederm@xmission.com> | 2016-09-14 21:53:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-23 12:31:31 +0300 |
| commit | e98d41370392dbc3e94c8802ce4e9eec9efdf92e (patch) | |
| tree | f3aeb2482e3a348fad2376a5f998b880956d9369 /arch/um/Kconfig.rest | |
| parent | 6bd1d8758db278cb97989a0ebd85059fd948b73b (diff) | |
| download | linux-e98d41370392dbc3e94c8802ce4e9eec9efdf92e.tar.xz | |
devpts: Change the owner of /dev/pts/ptmx to the mounter of /dev/pts
In 99.99% of the cases only root in a user namespace can mount /dev/pts
and in those cases the owner of /dev/pts/ptmx will remain root.root
In the oddball case where someone else has CAP_SYS_ADMIN this code
modifies the /dev/pts mount code to use current_fsuid and current_fsgid
as the values to use when creating the /dev/ptmx inode. As is done
when any other file is created.
This is a code simplification, and it allows running without a root
user entirely.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/um/Kconfig.rest')
0 files changed, 0 insertions, 0 deletions