aboutsummaryrefslogtreecommitdiff
path: root/ipc/msg.c
diff options
context:
space:
mode:
authorEric W. Biederman <ebiederm@xmission.com>2012-02-07 16:54:11 -0800
committerEric W. Biederman <ebiederm@xmission.com>2012-09-06 22:17:20 -0700
commit1efdb69b0bb41dec8ee3e2cac0a0f167837d0919 (patch)
treea9eb64c44d773e7b4fead20a7bfa9a354abf3bfa /ipc/msg.c
parent9582d90196aa879e6acf866f02a1adead08707b5 (diff)
downloadvexpress-lsk-1efdb69b0bb41dec8ee3e2cac0a0f167837d0919.tar.gz
userns: Convert ipc to use kuid and kgid where appropriate
- Store the ipc owner and creator with a kuid - Store the ipc group and the crators group with a kgid. - Add error handling to ipc_update_perms, allowing it to fail if the uids and gids can not be converted to kuids or kgids. - Modify the proc files to display the ipc creator and owner in the user namespace of the opener of the proc file. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'ipc/msg.c')
-rw-r--r--ipc/msg.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/ipc/msg.c b/ipc/msg.c
index 7385de25788..a71af5a65ab 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -443,9 +443,12 @@ static int msgctl_down(struct ipc_namespace *ns, int msqid, int cmd,
goto out_unlock;
}
+ err = ipc_update_perm(&msqid64.msg_perm, ipcp);
+ if (err)
+ goto out_unlock;
+
msq->q_qbytes = msqid64.msg_qbytes;
- ipc_update_perm(&msqid64.msg_perm, ipcp);
msq->q_ctime = get_seconds();
/* sleeping receivers might be excluded by
* stricter permissions.
@@ -922,6 +925,7 @@ out:
#ifdef CONFIG_PROC_FS
static int sysvipc_msg_proc_show(struct seq_file *s, void *it)
{
+ struct user_namespace *user_ns = seq_user_ns(s);
struct msg_queue *msq = it;
return seq_printf(s,
@@ -933,10 +937,10 @@ static int sysvipc_msg_proc_show(struct seq_file *s, void *it)
msq->q_qnum,
msq->q_lspid,
msq->q_lrpid,
- msq->q_perm.uid,
- msq->q_perm.gid,
- msq->q_perm.cuid,
- msq->q_perm.cgid,
+ from_kuid_munged(user_ns, msq->q_perm.uid),
+ from_kgid_munged(user_ns, msq->q_perm.gid),
+ from_kuid_munged(user_ns, msq->q_perm.cuid),
+ from_kgid_munged(user_ns, msq->q_perm.cgid),
msq->q_stime,
msq->q_rtime,
msq->q_ctime);