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authorEric W. Biederman <ebiederm@xmission.com>2012-06-01 16:14:19 -0600
committerEric W. Biederman <ebiederm@xmission.com>2012-09-21 03:13:25 -0700
commitd2b31ca644fdc8704de3367a6a56a5c958c77f53 (patch)
tree70967aaec7a5a86ffdd6adf3a45d3b3cb8833678 /security/tomoyo
parent8b94eea4bfb8df693c5b35d08b74f13cfb92f3de (diff)
downloadvexpress-lsk-d2b31ca644fdc8704de3367a6a56a5c958c77f53.tar.gz
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.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c
index c2d04a50f76..d88eb3a046e 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;
}