1 /*- 2 * Copyright (c) 1999-2002 Robert N. M. Watson 3 * Copyright (c) 2001-2003 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed by Robert Watson for the TrustedBSD Project. 7 * 8 * This software was developed for the FreeBSD Project in part by Network 9 * Associates Laboratories, the Security Research Division of Network 10 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 11 * as part of the DARPA CHATS research program. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD$ 35 */ 36 37 /* 38 * Developed by the TrustedBSD Project. 39 * 40 * Sample policy implementing no entry points; for performance measurement 41 * purposes only. If you're looking for a stub policy to base new policies 42 * on, try mac_stub. 43 */ 44 45 #include <sys/types.h> 46 #include <sys/param.h> 47 #include <sys/acl.h> 48 #include <sys/conf.h> 49 #include <sys/extattr.h> 50 #include <sys/kernel.h> 51 #include <sys/mac.h> 52 #include <sys/mount.h> 53 #include <sys/proc.h> 54 #include <sys/systm.h> 55 #include <sys/sysproto.h> 56 #include <sys/sysent.h> 57 #include <sys/vnode.h> 58 #include <sys/file.h> 59 #include <sys/socket.h> 60 #include <sys/socketvar.h> 61 #include <sys/pipe.h> 62 #include <sys/sx.h> 63 #include <sys/sysctl.h> 64 65 #include <fs/devfs/devfs.h> 66 67 #include <net/bpfdesc.h> 68 #include <net/if.h> 69 #include <net/if_types.h> 70 #include <net/if_var.h> 71 72 #include <netinet/in.h> 73 #include <netinet/ip_var.h> 74 75 #include <vm/vm.h> 76 77 #include <sys/mac_policy.h> 78 79 SYSCTL_DECL(_security_mac); 80 81 SYSCTL_NODE(_security_mac, OID_AUTO, none, CTLFLAG_RW, 0, 82 "TrustedBSD mac_none policy controls"); 83 84 static int mac_none_enabled = 1; 85 SYSCTL_INT(_security_mac_none, OID_AUTO, enabled, CTLFLAG_RW, 86 &mac_none_enabled, 0, "Enforce none policy"); 87 88 static struct mac_policy_ops mac_none_ops = 89 { 90 }; 91 92 MAC_POLICY_SET(&mac_none_ops, mac_none, "TrustedBSD MAC/None", 93 MPC_LOADTIME_FLAG_UNLOADOK, NULL); 94