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>

3 files changed, 7 insertions, 5 deletions

diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index ef0579d5bca6..7af88ef01657 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1251,7 +1251,8 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
                    sk_wmem_alloc_get(sp),
                    sk_rmem_alloc_get(sp),
                    0, 0L, 0,
-                   sock_i_uid(sp), 0,
+                   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+                   0,
                    sock_i_ino(sp),
                    atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index c66b90f71c9b..4b5b335ebde1 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1803,7 +1803,7 @@ static void tcp_v6_destroy_sock(struct sock *sk)
 #ifdef CONFIG_PROC_FS
 /* Proc filesystem TCPv6 sock list dumping. */
 static void get_openreq6(struct seq_file *seq,
-                         const struct sock *sk, struct request_sock *req, int i, int uid)
+                         const struct sock *sk, struct request_sock *req, int i, kuid_t uid)
 {
         int ttd = req->expires - jiffies;
         const struct in6_addr *src = &inet6_rsk(req)->loc_addr;
@@ -1827,7 +1827,7 @@ static void get_openreq6(struct seq_file *seq,
                    1,   /* timers active (only the expire timer) */
                    jiffies_to_clock_t(ttd),
                    req->retrans,
-                   uid,
+                   from_kuid_munged(seq_user_ns(seq), uid),
                    0,  /* non standard timer */
                    0, /* open_requests have no inode */
                    0, req);
@@ -1877,7 +1877,7 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i)
                    timer_active,
                    jiffies_to_clock_t(timer_expires - jiffies),
                    icsk->icsk_retransmits,
-                   sock_i_uid(sp),
+                   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
                    icsk->icsk_probes_out,
                    sock_i_ino(sp),
                    atomic_read(&sp->sk_refcnt), sp,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 99d0077b56b8..bbdff07eebe1 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1458,7 +1458,8 @@ static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket
                    sk_wmem_alloc_get(sp),
                    sk_rmem_alloc_get(sp),
                    0, 0L, 0,
-                   sock_i_uid(sp), 0,
+                   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+                   0,
                    sock_i_ino(sp),
                    atomic_read(&sp->sk_refcnt), sp,
                    atomic_read(&sp->sk_drops));