userns: Print out socket uids in a user namespace aware fashion.

Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index b4c3582a991..53b89817c00 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2110,7 +2110,9 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
                 bucket, src, srcp, dest, destp, sp->sk_state,
                 sk_wmem_alloc_get(sp),
                 sk_rmem_alloc_get(sp),
-                0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+                0, 0L, 0,
+                from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
+                0, sock_i_ino(sp),
                 atomic_read(&sp->sk_refcnt), sp,
                 atomic_read(&sp->sk_drops), len);
 }