[PATCH 2/3] net/unix: hook unix_socketpair() into LSM

[David Herrmann]

Use the newly created LSM-hook for unix_socketpair(). The default hook
return-value is 0, so behavior stays the same unless LSMs start using
this hook.

Signed-off-by: David Herrmann <dh.herrm...@gmail.com>
---
 net/unix/af_unix.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 68bb70a62afe..bc9705ace9b1 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1371,6 +1371,11 @@ static int unix_stream_connect(struct socket *sock, 
struct sockaddr *uaddr,
 static int unix_socketpair(struct socket *socka, struct socket *sockb)
 {
        struct sock *ska = socka->sk, *skb = sockb->sk;
+       int err;
+
+       err = security_unix_stream_socketpair(ska, skb);
+       if (err)
+               return err;
 
        /* Join our sockets back to back */
        sock_hold(ska);
-- 
2.17.0