The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/security/mac_inet.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * Copyright (c) 2007 Apple Inc. All rights reserved.
    3  *
    4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
    5  * 
    6  * This file contains Original Code and/or Modifications of Original Code
    7  * as defined in and that are subject to the Apple Public Source License
    8  * Version 2.0 (the 'License'). You may not use this file except in
    9  * compliance with the License. The rights granted to you under the License
   10  * may not be used to create, or enable the creation or redistribution of,
   11  * unlawful or unlicensed copies of an Apple operating system, or to
   12  * circumvent, violate, or enable the circumvention or violation of, any
   13  * terms of an Apple operating system software license agreement.
   14  * 
   15  * Please obtain a copy of the License at
   16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
   17  * 
   18  * The Original Code and all software distributed under the License are
   19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   23  * Please see the License for the specific language governing rights and
   24  * limitations under the License.
   25  * 
   26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
   27  */
   28 /*-
   29  * Copyright (c) 1999-2002 Robert N. M. Watson
   30  * Copyright (c) 2001 Ilmar S. Habibulin
   31  * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
   32  * Copyright (c) 2006-2007 SPARTA, Inc.
   33  * All rights reserved.
   34  *
   35  * This software was developed by Robert Watson and Ilmar Habibulin for the
   36  * TrustedBSD Project.
   37  *
   38  * This software was developed for the FreeBSD Project in part by Network
   39  * Associates Laboratories, the Security Research Division of Network
   40  * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
   41  * as part of the DARPA CHATS research program.
   42  *
   43  * This software was enhanced by SPARTA ISSO under SPAWAR contract
   44  * N66001-04-C-6019 ("SEFOS").
   45  *
   46  * Redistribution and use in source and binary forms, with or without
   47  * modification, are permitted provided that the following conditions
   48  * are met:
   49  * 1. Redistributions of source code must retain the above copyright
   50  *    notice, this list of conditions and the following disclaimer.
   51  * 2. Redistributions in binary form must reproduce the above copyright
   52  *    notice, this list of conditions and the following disclaimer in the
   53  *    documentation and/or other materials provided with the distribution.
   54  *
   55  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   56  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   57  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   58  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   59  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   60  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   61  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   62  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   63  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   64  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   65  * SUCH DAMAGE.
   66  */
   67 
   68 #include <sys/param.h>
   69 #include <sys/kernel.h>
   70 #include <sys/mbuf.h>
   71 #include <sys/socket.h>
   72 #include <sys/socketvar.h>
   73 
   74 #include <net/if.h>
   75 #include <net/if_var.h>
   76 #include <net/route.h>
   77 
   78 #include <netinet/in.h>
   79 #include <netinet/in_pcb.h>
   80 #include <netinet/ip_var.h>
   81 
   82 #include <security/mac_internal.h>
   83 
   84 static struct label *
   85 mac_inpcb_label_alloc(int flag)
   86 {
   87         struct label *label;
   88         int error;
   89 
   90         label = mac_labelzone_alloc(flag);
   91         if (label == NULL)
   92                 return (NULL);
   93         MAC_CHECK(inpcb_label_init, label, flag);
   94         if (error) {
   95                 MAC_PERFORM(inpcb_label_destroy, label);
   96                 mac_labelzone_free(label);
   97                 return (NULL);
   98         }
   99         return (label);
  100 }
  101 
  102 int
  103 mac_inpcb_label_init(struct inpcb *inp, int flag)
  104 {
  105 
  106         inp->inp_label = mac_inpcb_label_alloc(flag);
  107         if (inp->inp_label == NULL)
  108                 return (ENOMEM);
  109         return (0);
  110 }
  111 
  112 static struct label *
  113 mac_ipq_label_alloc(int flag)
  114 {
  115         struct label *label;
  116         int error;
  117 
  118         label = mac_labelzone_alloc(flag);
  119         if (label == NULL)
  120                 return (NULL);
  121 
  122         MAC_CHECK(ipq_label_init, label, flag);
  123         if (error) {
  124                 MAC_PERFORM(ipq_label_destroy, label);
  125                 mac_labelzone_free(label);
  126                 return (NULL);
  127         }
  128         return (label);
  129 }
  130 
  131 int
  132 mac_ipq_label_init(struct ipq *ipq, int flag)
  133 {
  134 
  135         ipq->ipq_label = mac_ipq_label_alloc(flag);
  136         if (ipq->ipq_label == NULL)
  137                 return (ENOMEM);
  138         return (0);
  139 }
  140 
  141 static void
  142 mac_inpcb_label_free(struct label *label)
  143 {
  144 
  145         MAC_PERFORM(inpcb_label_destroy, label);
  146         mac_labelzone_free(label);
  147 }
  148 
  149 void
  150 mac_inpcb_label_destroy(struct inpcb *inp)
  151 {
  152 
  153         mac_inpcb_label_free(inp->inp_label);
  154         inp->inp_label = NULL;
  155 }
  156 
  157 void
  158 mac_inpcb_label_recycle(struct inpcb *inp)
  159 {
  160 
  161         MAC_PERFORM(inpcb_label_recycle, inp->inp_label);
  162 }
  163 
  164 static void
  165 mac_ipq_label_free(struct label *label)
  166 {
  167 
  168         MAC_PERFORM(ipq_label_destroy, label);
  169         mac_labelzone_free(label);
  170 }
  171 
  172 void
  173 mac_ipq_label_destroy(struct ipq *ipq)
  174 {
  175 
  176         mac_ipq_label_free(ipq->ipq_label);
  177         ipq->ipq_label = NULL;
  178 }
  179 
  180 void
  181 mac_inpcb_label_associate(struct socket *so, struct inpcb *inp)
  182 {
  183 
  184         MAC_PERFORM(inpcb_label_associate, so, so->so_label, inp,
  185             inp->inp_label);
  186 }
  187 
  188 void
  189 mac_mbuf_label_associate_ipq(struct ipq *ipq, struct mbuf *m)
  190 {
  191         struct label *label;
  192 
  193         label = mac_mbuf_to_label(m);
  194 
  195         MAC_PERFORM(mbuf_label_associate_ipq, ipq, ipq->ipq_label, m, label);
  196 }
  197 
  198 void
  199 mac_netinet_fragment(struct mbuf *datagram, struct mbuf *fragment)
  200 {
  201         struct label *datagramlabel, *fragmentlabel;
  202 
  203         datagramlabel = mac_mbuf_to_label(datagram);
  204         fragmentlabel = mac_mbuf_to_label(fragment);
  205 
  206         MAC_PERFORM(netinet_fragment, datagram, datagramlabel, fragment,
  207             fragmentlabel);
  208 }
  209 
  210 void
  211 mac_ipq_label_associate(struct mbuf *fragment, struct ipq *ipq)
  212 {
  213         struct label *label;
  214 
  215         label = mac_mbuf_to_label(fragment);
  216 
  217         MAC_PERFORM(ipq_label_associate, fragment, label, ipq, ipq->ipq_label);
  218 }
  219 
  220 void
  221 mac_mbuf_label_associate_inpcb(struct inpcb *inp, struct mbuf *m)
  222 {
  223         struct label *mlabel;
  224 
  225         /* INP_LOCK_ASSERT(inp); */
  226         mlabel = mac_mbuf_to_label(m);
  227 
  228         MAC_PERFORM(mbuf_label_associate_inpcb, inp, inp->inp_label, m, mlabel);
  229 }
  230 
  231 int
  232 mac_ipq_label_compare(struct mbuf *fragment, struct ipq *ipq)
  233 {
  234         struct label *label;
  235         int result;
  236 
  237         label = mac_mbuf_to_label(fragment);
  238 
  239         result = 1;
  240         MAC_BOOLEAN(ipq_label_compare, &&, fragment, label, ipq, ipq->ipq_label);
  241 
  242         return (result);
  243 }
  244 
  245 void
  246 mac_netinet_icmp_reply(struct mbuf *m)
  247 {
  248         struct label *label;
  249 
  250         label = mac_mbuf_to_label(m);
  251 
  252         MAC_PERFORM(netinet_icmp_reply, m, label);
  253 }
  254 
  255 void
  256 mac_netinet_tcp_reply(struct mbuf *m)
  257 {
  258         struct label *label;
  259 
  260         label = mac_mbuf_to_label(m);
  261 
  262         MAC_PERFORM(netinet_tcp_reply, m, label);
  263 }
  264 
  265 void
  266 mac_ipq_label_update(struct mbuf *fragment, struct ipq *ipq)
  267 {
  268         struct label *label;
  269 
  270         label = mac_mbuf_to_label(fragment);
  271 
  272         MAC_PERFORM(ipq_label_update, fragment, label, ipq, ipq->ipq_label);
  273 }
  274 
  275 int
  276 mac_inpcb_check_deliver(struct inpcb *inp, struct mbuf *m, int family, int type)
  277 {
  278         struct label *label;
  279         int error;
  280 
  281         if ((m->m_flags & M_PKTHDR) == 0)
  282                 panic("%s: no mbuf packet header!", __func__);
  283 
  284         label = mac_mbuf_to_label(m);
  285 
  286         MAC_CHECK(inpcb_check_deliver, inp, inp->inp_label, m, label,
  287             family, type);
  288 
  289         return (error);
  290 }
  291 
  292 /*
  293  * Propagate a change in the socket label to the inpcb label.
  294  */
  295 void
  296 mac_inpcb_label_update(struct socket *so)
  297 {
  298         struct inpcb *inp;
  299 
  300         /* XXX: assert socket lock. */
  301         inp = sotoinpcb(so);    /* XXX: inp locking */
  302 
  303         if (inp != NULL) {
  304                 /* INP_LOCK_ASSERT(inp); */
  305                 MAC_PERFORM(inpcb_label_update, so, so->so_label, inp,
  306                     inp->inp_label);
  307         }
  308 }

Cache object: a0e1e9559a916ff8d5cc985bf2c1de66


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.