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| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-06-01 16:14:19 -0600 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-09-21 03:13:25 -0700 |
| commit | d2b31ca644fdc8704de3367a6a56a5c958c77f53 (patch) | |
| tree | 70967aaec7a5a86ffdd6adf3a45d3b3cb8833678 /security/tomoyo | |
| parent | 8b94eea4bfb8df693c5b35d08b74f13cfb92f3de (diff) | |
| download | lwn-d2b31ca644fdc8704de3367a6a56a5c958c77f53.tar.gz lwn-d2b31ca644fdc8704de3367a6a56a5c958c77f53.zip | |
userns: Teach security_path_chown to take kuids and kgids
Don't make the security modules deal with raw user space uid and
gids instead pass in a kuid_t and a kgid_t so that security modules
only have to deal with internal kernel uids and gids.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: James Morris <james.l.morris@oracle.com>
Cc: John Johansen <john.johansen@canonical.com>
Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'security/tomoyo')
| -rw-r--r-- | security/tomoyo/tomoyo.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c index c2d04a50f76a..d88eb3a046ed 100644 --- a/security/tomoyo/tomoyo.c +++ b/security/tomoyo/tomoyo.c @@ -373,13 +373,15 @@ static int tomoyo_path_chmod(struct path *path, umode_t mode) * * Returns 0 on success, negative value otherwise. */ -static int tomoyo_path_chown(struct path *path, uid_t uid, gid_t gid) +static int tomoyo_path_chown(struct path *path, kuid_t uid, kgid_t gid) { int error = 0; - if (uid != (uid_t) -1) - error = tomoyo_path_number_perm(TOMOYO_TYPE_CHOWN, path, uid); - if (!error && gid != (gid_t) -1) - error = tomoyo_path_number_perm(TOMOYO_TYPE_CHGRP, path, gid); + if (uid_valid(uid)) + error = tomoyo_path_number_perm(TOMOYO_TYPE_CHOWN, path, + from_kuid(&init_user_ns, uid)); + if (!error && gid_valid(gid)) + error = tomoyo_path_number_perm(TOMOYO_TYPE_CHGRP, path, + from_kgid(&init_user_ns, gid)); return error; } |