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authorTom Gundersen <teg@jklm.no>2018-05-04 16:28:22 +0200
committerJames Morris <james.morris@microsoft.com>2018-05-04 12:48:54 -0700
commit5859cdf55063943192f316b3d6c673fd6fcbee46 (patch)
tree0e54055d2dedb3c8f958de14be63fc3f7b47a263 /security/smack/smack_lsm.c
parent0b811db2cb2aabc910e53d34ebb95a15997c33e7 (diff)
downloadlinux-5859cdf55063943192f316b3d6c673fd6fcbee46.tar.gz
smack: provide socketpair callback
Make sure to implement the new socketpair callback so the SO_PEERSEC call on socketpair(2)s will return correct information. Signed-off-by: Tom Gundersen <teg@jklm.no> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'security/smack/smack_lsm.c')
-rw-r--r--security/smack/smack_lsm.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 0b414836bebd..dcb976f98df2 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2842,6 +2842,27 @@ static int smack_socket_post_create(struct socket *sock, int family,
return smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET);
}
+/**
+ * smack_socket_socketpair - create socket pair
+ * @socka: one socket
+ * @sockb: another socket
+ *
+ * Cross reference the peer labels for SO_PEERSEC
+ *
+ * Returns 0 on success, and error code otherwise
+ */
+static int smack_socket_socketpair(struct socket *socka,
+ struct socket *sockb)
+{
+ struct socket_smack *asp = socka->sk->sk_security;
+ struct socket_smack *bsp = sockb->sk->sk_security;
+
+ asp->smk_packet = bsp->smk_out;
+ bsp->smk_packet = asp->smk_out;
+
+ return 0;
+}
+
#ifdef SMACK_IPV6_PORT_LABELING
/**
* smack_socket_bind - record port binding information.
@@ -4724,6 +4745,7 @@ static struct security_hook_list smack_hooks[] __lsm_ro_after_init = {
LSM_HOOK_INIT(unix_may_send, smack_unix_may_send),
LSM_HOOK_INIT(socket_post_create, smack_socket_post_create),
+ LSM_HOOK_INIT(socket_socketpair, smack_socket_socketpair),
#ifdef SMACK_IPV6_PORT_LABELING
LSM_HOOK_INIT(socket_bind, smack_socket_bind),
#endif