SELinux: new permission between tty audit and audit socket

New selinux permission to separate the ability to turn on tty auditing from
the ability to set audit rules.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/selinux/include/av_permissions.h b/security/selinux/include/av_permissions.h
index 0b8f9b2..d645192 100644
--- a/security/selinux/include/av_permissions.h
+++ b/security/selinux/include/av_permissions.h
@@ -708,6 +708,7 @@
 #define NETLINK_AUDIT_SOCKET__NLMSG_WRITE         0x00800000UL
 #define NETLINK_AUDIT_SOCKET__NLMSG_RELAY         0x01000000UL
 #define NETLINK_AUDIT_SOCKET__NLMSG_READPRIV      0x02000000UL
+#define NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT     0x04000000UL
 #define NETLINK_IP6FW_SOCKET__IOCTL               0x00000001UL
 #define NETLINK_IP6FW_SOCKET__READ                0x00000002UL
 #define NETLINK_IP6FW_SOCKET__WRITE               0x00000004UL