From: Roy.Li <rongqing.li@xxxxxxxxxxxxx>
Export the tcp sock's security context to proc, since it maybe
different from the sock's owner process security context.
Signed-off-by: Roy.Li <rongqing.li@xxxxxxxxxxxxx>
---
net/ipv4/tcp_ipv4.c | 15 +++++++++++----
1 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 955b8e6..98a85d6 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2478,13 +2478,16 @@ static void get_timewait4_sock(struct inet_timewait_sock *tw,
static int tcp4_seq_show(struct seq_file *seq, void *v)
{
struct tcp_iter_state *st;
- int len;
+ int len, sclen;
+ struct sock *s = NULL;
if (v == SEQ_START_TOKEN) {
- seq_printf(seq, "%-*s\n", TMPSZ - 1,
+ seq_printf(seq,
" sl local_address rem_address st tx_queue "
"rx_queue tr tm->when retrnsmt uid timeout "
- "inode");
+ "inode %n", &len);
+ seq_printf(seq, "%-*s\n", TMPSZ - len - 1,
+ (selinux_is_enabled() ? " scontext" : ""));
goto out;
}
st = seq->private;
@@ -2493,15 +2496,19 @@ static int tcp4_seq_show(struct seq_file *seq, void *v)
case TCP_SEQ_STATE_LISTENING:
case TCP_SEQ_STATE_ESTABLISHED:
get_tcp4_sock(v, seq, st->num, &len);
+ s = v;
break;
case TCP_SEQ_STATE_OPENREQ:
get_openreq4(st->syn_wait_sk, v, seq, st->num, st->uid, &len);
+ s = st->syn_wait_sk;
break;
case TCP_SEQ_STATE_TIME_WAIT:
get_timewait4_sock(v, seq, st->num, &len);
break;
}
- seq_printf(seq, "%*s\n", TMPSZ - 1 - len, "");
+
+ sock_write_secctx(s, seq, &sclen);
+ seq_printf(seq, "%*s\n", TMPSZ + sclen - 1 - len, "");
out:
return 0;
}
--
1.7.1
--
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