diff --git a/include/asm-alpha/socket.h b/include/asm-alpha/socket.h
index b519322..d22ab97 100644
--- a/include/asm-alpha/socket.h
+++ b/include/asm-alpha/socket.h
@@ -51,6 +51,7 @@
 #define SCM_TIMESTAMP		SO_TIMESTAMP
 
 #define SO_PEERSEC		30
+#define SO_PASSSEC		34
 
 /* Security levels - as per NRL IPv6 - don't actually do anything */
 #define SO_SECURITY_AUTHENTICATION		19
diff --git a/include/asm-arm/socket.h b/include/asm-arm/socket.h
index 3c51da6..19f7df7 100644
--- a/include/asm-arm/socket.h
+++ b/include/asm-arm/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-arm26/socket.h b/include/asm-arm26/socket.h
index 3c51da6..19f7df7 100644
--- a/include/asm-arm26/socket.h
+++ b/include/asm-arm26/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-cris/socket.h b/include/asm-cris/socket.h
index 8b1da3e..01cfdf1 100644
--- a/include/asm-cris/socket.h
+++ b/include/asm-cris/socket.h
@@ -50,6 +50,7 @@
 #define SO_ACCEPTCONN          30
 
 #define SO_PEERSEC             31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
 
diff --git a/include/asm-frv/socket.h b/include/asm-frv/socket.h
index 7177f8b..31db18f 100644
--- a/include/asm-frv/socket.h
+++ b/include/asm-frv/socket.h
@@ -48,6 +48,7 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
 
diff --git a/include/asm-h8300/socket.h b/include/asm-h8300/socket.h
index d98cf85..ebc830f 100644
--- a/include/asm-h8300/socket.h
+++ b/include/asm-h8300/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-i386/socket.h b/include/asm-i386/socket.h
index 802ae76..5755d57 100644
--- a/include/asm-i386/socket.h
+++ b/include/asm-i386/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-ia64/socket.h b/include/asm-ia64/socket.h
index a255006..d638ef3 100644
--- a/include/asm-ia64/socket.h
+++ b/include/asm-ia64/socket.h
@@ -57,5 +57,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC             31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_IA64_SOCKET_H */
diff --git a/include/asm-m32r/socket.h b/include/asm-m32r/socket.h
index 8b6680f..acdf748 100644
--- a/include/asm-m32r/socket.h
+++ b/include/asm-m32r/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_M32R_SOCKET_H */
diff --git a/include/asm-m68k/socket.h b/include/asm-m68k/socket.h
index f578ca4..a5966ec 100644
--- a/include/asm-m68k/socket.h
+++ b/include/asm-m68k/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC             31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-mips/socket.h b/include/asm-mips/socket.h
index 0bb31e5..36ebe4e 100644
--- a/include/asm-mips/socket.h
+++ b/include/asm-mips/socket.h
@@ -69,6 +69,7 @@
 #define SO_PEERSEC		30
 #define SO_SNDBUFFORCE		31
 #define SO_RCVBUFFORCE		33
+#define SO_PASSSEC		34
 
 #ifdef __KERNEL__
 
diff --git a/include/asm-parisc/socket.h b/include/asm-parisc/socket.h
index 1bf54dc..ce2eae1 100644
--- a/include/asm-parisc/socket.h
+++ b/include/asm-parisc/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		0x401c
 
 #define SO_PEERSEC		0x401d
+#define SO_PASSSEC		0x401e
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-powerpc/socket.h b/include/asm-powerpc/socket.h
index e4b8177..c8b1da5 100644
--- a/include/asm-powerpc/socket.h
+++ b/include/asm-powerpc/socket.h
@@ -55,5 +55,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif	/* _ASM_POWERPC_SOCKET_H */
diff --git a/include/asm-s390/socket.h b/include/asm-s390/socket.h
index 15a5298..1778a49 100644
--- a/include/asm-s390/socket.h
+++ b/include/asm-s390/socket.h
@@ -56,5 +56,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-sh/socket.h b/include/asm-sh/socket.h
index 553904f..ca70362 100644
--- a/include/asm-sh/socket.h
+++ b/include/asm-sh/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* __ASM_SH_SOCKET_H */
diff --git a/include/asm-sparc/socket.h b/include/asm-sparc/socket.h
index 4e0ce3a..f6c4e5b 100644
--- a/include/asm-sparc/socket.h
+++ b/include/asm-sparc/socket.h
@@ -48,6 +48,7 @@
 #define SCM_TIMESTAMP		SO_TIMESTAMP
 
 #define SO_PEERSEC		0x001e
+#define SO_PASSSEC		0x001f
 
 /* Security levels - as per NRL IPv6 - don't actually do anything */
 #define SO_SECURITY_AUTHENTICATION		0x5001
diff --git a/include/asm-sparc64/socket.h b/include/asm-sparc64/socket.h
index 59987da..754d46a 100644
--- a/include/asm-sparc64/socket.h
+++ b/include/asm-sparc64/socket.h
@@ -48,6 +48,7 @@
 #define SCM_TIMESTAMP		SO_TIMESTAMP
 
 #define SO_PEERSEC		0x001e
+#define SO_PASSSEC		0x001f
 
 /* Security levels - as per NRL IPv6 - don't actually do anything */
 #define SO_SECURITY_AUTHENTICATION		0x5001
diff --git a/include/asm-v850/socket.h b/include/asm-v850/socket.h
index 0240d36..0dfe55a 100644
--- a/include/asm-v850/socket.h
+++ b/include/asm-v850/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif /* __V850_SOCKET_H__ */
diff --git a/include/asm-x86_64/socket.h b/include/asm-x86_64/socket.h
index f2cdbea..b467026 100644
--- a/include/asm-x86_64/socket.h
+++ b/include/asm-x86_64/socket.h
@@ -48,5 +48,6 @@
 #define SO_ACCEPTCONN		30
 
 #define SO_PEERSEC             31
+#define SO_PASSSEC		34
 
 #endif /* _ASM_SOCKET_H */
diff --git a/include/asm-xtensa/socket.h b/include/asm-xtensa/socket.h
index 00f83f3..971d231 100644
--- a/include/asm-xtensa/socket.h
+++ b/include/asm-xtensa/socket.h
@@ -59,5 +59,6 @@
 
 #define SO_ACCEPTCONN		30
 #define SO_PEERSEC		31
+#define SO_PASSSEC		34
 
 #endif	/* _XTENSA_SOCKET_H */
diff --git a/include/linux/net.h b/include/linux/net.h
index 385e68f..b20c53c 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -61,6 +61,7 @@
 #define SOCK_ASYNC_WAITDATA	1
 #define SOCK_NOSPACE		2
 #define SOCK_PASSCRED		3
+#define SOCK_PASSSEC		4
 
 #ifndef ARCH_HAS_SOCKET_TYPES
 /**
diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index 795f81f..5ba72d9 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -53,10 +53,16 @@
 struct unix_skb_parms {
 	struct ucred		creds;		/* Skb credentials	*/
 	struct scm_fp_list	*fp;		/* Passed files		*/
+#ifdef CONFIG_SECURITY_NETWORK
+	char			*secdata;	/* Security context	*/
+	u32			seclen;		/* Security length	*/
+#endif
 };
 
 #define UNIXCB(skb) 	(*(struct unix_skb_parms*)&((skb)->cb))
 #define UNIXCREDS(skb)	(&UNIXCB((skb)).creds)
+#define UNIXSECDATA(skb)	(&UNIXCB((skb)).secdata)
+#define UNIXSECLEN(skb)		(&UNIXCB((skb)).seclen)
 
 #define unix_state_rlock(s)	spin_lock(&unix_sk(s)->lock)
 #define unix_state_runlock(s)	spin_unlock(&unix_sk(s)->lock)
diff --git a/include/net/scm.h b/include/net/scm.h
index 540619c..02daa09 100644
--- a/include/net/scm.h
+++ b/include/net/scm.h
@@ -19,6 +19,10 @@
 {
 	struct ucred		creds;		/* Skb credentials	*/
 	struct scm_fp_list	*fp;		/* Passed files		*/
+#ifdef CONFIG_SECURITY_NETWORK
+	char			*secdata;	/* Security context	*/
+	u32			seclen;		/* Security length	*/
+#endif
 	unsigned long		seq;		/* Connection seqno	*/
 };
 
@@ -48,6 +52,17 @@
 	return __scm_send(sock, msg, scm);
 }
 
+#ifdef CONFIG_SECURITY_NETWORK
+static inline void scm_passec(struct socket *sock, struct msghdr *msg, struct scm_cookie *scm)
+{
+	if (test_bit(SOCK_PASSSEC, &sock->flags) && scm->secdata != NULL)
+		put_cmsg(msg, SOL_SOCKET, SCM_SECURITY, scm->seclen, scm->secdata);
+}
+#else
+static inline void scm_passec(struct socket *sock, struct msghdr *msg, struct scm_cookie *scm)
+{ }
+#endif /* CONFIG_SECURITY_NETWORK */
+
 static __inline__ void scm_recv(struct socket *sock, struct msghdr *msg,
 				struct scm_cookie *scm, int flags)
 {
@@ -62,6 +77,8 @@
 	if (test_bit(SOCK_PASSCRED, &sock->flags))
 		put_cmsg(msg, SOL_SOCKET, SCM_CREDENTIALS, sizeof(scm->creds), &scm->creds);
 
+	scm_passec(sock, msg, scm);
+
 	if (!scm->fp)
 		return;
 	
diff --git a/net/core/sock.c b/net/core/sock.c
index 5d820c3..204a8de 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -565,6 +565,13 @@
 			ret = -ENONET;
 			break;
 
+		case SO_PASSSEC:
+			if (valbool)
+				set_bit(SOCK_PASSSEC, &sock->flags);
+			else
+				clear_bit(SOCK_PASSSEC, &sock->flags);
+			break;
+
 		/* We implement the SO_SNDLOWAT etc to
 		   not be settable (1003.1g 5.3) */
 		default:
@@ -723,6 +730,10 @@
 			v.val = sk->sk_state == TCP_LISTEN;
 			break;
 
+		case SO_PASSSEC:
+			v.val = test_bit(SOCK_PASSSEC, &sock->flags) ? 1 : 0;
+			break;
+
 		case SO_PEERSEC:
 			return security_socket_getpeersec_stream(sock, optval, optlen, len);
 
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index d901465..fd11d40 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -128,6 +128,30 @@
 
 #define UNIX_ABSTRACT(sk)	(unix_sk(sk)->addr->hash != UNIX_HASH_SIZE)
 
+#ifdef CONFIG_SECURITY_NETWORK
+static void unix_get_peersec_dgram(struct sk_buff *skb)
+{
+	int err;
+
+	err = security_socket_getpeersec_dgram(skb, UNIXSECDATA(skb),
+					       UNIXSECLEN(skb));
+	if (err)
+		*(UNIXSECDATA(skb)) = NULL;
+}
+
+static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)
+{
+	scm->secdata = *UNIXSECDATA(skb);
+	scm->seclen = *UNIXSECLEN(skb);
+}
+#else
+static void unix_get_peersec_dgram(struct sk_buff *skb)
+{ }
+
+static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)
+{ }
+#endif /* CONFIG_SECURITY_NETWORK */
+
 /*
  *  SMP locking strategy:
  *    hash table is protected with spinlock unix_table_lock
@@ -1291,6 +1315,8 @@
 	if (siocb->scm->fp)
 		unix_attach_fds(siocb->scm, skb);
 
+	unix_get_peersec_dgram(skb);
+
 	skb->h.raw = skb->data;
 	err = memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len);
 	if (err)
@@ -1570,6 +1596,7 @@
 		memset(&tmp_scm, 0, sizeof(tmp_scm));
 	}
 	siocb->scm->creds = *UNIXCREDS(skb);
+	unix_set_secdata(siocb->scm, skb);
 
 	if (!(flags & MSG_PEEK))
 	{
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b6c378d..b85afcf 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -69,6 +69,7 @@
 #include <linux/sysctl.h>
 #include <linux/audit.h>
 #include <linux/string.h>
+#include <linux/selinux.h>
 
 #include "avc.h"
 #include "objsec.h"
@@ -3420,7 +3421,13 @@
 static int selinux_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata, u32 *seclen)
 {
 	int err = 0;
-	u32 peer_sid = selinux_socket_getpeer_dgram(skb);
+	u32 peer_sid;
+
+	if (skb->sk->sk_family == PF_UNIX)
+		selinux_get_inode_sid(SOCK_INODE(skb->sk->sk_socket),
+				      &peer_sid);
+	else
+		peer_sid = selinux_socket_getpeer_dgram(skb);
 
 	if (peer_sid == SECSID_NULL)
 		return -EINVAL;
@@ -3432,8 +3439,6 @@
 	return 0;
 }
 
-
-
 static int selinux_sk_alloc_security(struct sock *sk, int family, gfp_t priority)
 {
 	return sk_alloc_security(sk, family, priority);