bsd/kern/uipc_proto.c

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, 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 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  29 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  30 /*-
  31  * Copyright (c) 1982, 1986, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)uipc_proto.c        8.2 (Berkeley) 2/14/95
  63  */
  64
  65 #include <sys/param.h>
  66 #include <sys/socket.h>
  67 #include <sys/protosw.h>
  68 #include <sys/domain.h>
  69 #include <sys/mbuf.h>
  70 #include <sys/un.h>
  71 #include <net/raw_cb.h>
  72 #include <sys/sysctl.h>
  73
  74 /*
  75  * Definitions of protocols supported in the UNIX domain.
  76  */
  77
  78 int     raw_usrreq(void);
  79 static void pre_unp_init(void) __attribute__((section("__TEXT, initcode")));
  80
  81 static struct protosw localsw[] = {
  82         {
  83                 .pr_type = SOCK_STREAM,
  84                 .pr_domain = &localdomain,
  85                 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
  86                 .pr_ctloutput = uipc_ctloutput,
  87                 .pr_usrreqs = &uipc_usrreqs,
  88         },
  89         {
  90                 .pr_type = SOCK_DGRAM,
  91                 .pr_domain = &localdomain,
  92                 .pr_flags = PR_ATOMIC|PR_ADDR|PR_RIGHTS,
  93                 .pr_ctloutput = uipc_ctloutput,
  94                 .pr_usrreqs = &uipc_usrreqs,
  95         },
  96         {
  97                 .pr_ctlinput  = raw_ctlinput,
  98                 .pr_usrreqs = &raw_usrreqs,
  99         },
 100 };
 101
 102 int local_proto_count = (sizeof (localsw) / sizeof (struct protosw));
 103
 104 static void
 105 pre_unp_init(void)
 106 {
 107         static int localdomain_initted = 0;
 108         int i;
 109         struct protosw *pr;
 110         struct domain *dp = &localdomain;
 111
 112         for (i=0, pr = &localsw[0]; i<local_proto_count; i++, pr++)
 113                 net_add_proto(pr, dp);
 114         unp_init();
 115 }
 116
 117 struct domain localdomain = {
 118         .dom_family = AF_LOCAL,
 119         .dom_name = "unix",
 120         .dom_init = pre_unp_init,
 121         .dom_externalize = unp_externalize,
 122         .dom_dispose = unp_dispose,
 123         .dom_protosw = localsw
 124 };
 125
 126 SYSCTL_NODE(_net, PF_LOCAL, local, CTLFLAG_RW|CTLFLAG_LOCKED, NULL, "Local domain");
 127 SYSCTL_NODE(_net_local, SOCK_STREAM, stream, CTLFLAG_RW|CTLFLAG_LOCKED, NULL, "SOCK_STREAM");
 128 SYSCTL_NODE(_net_local, SOCK_DGRAM, dgram, CTLFLAG_RW|CTLFLAG_LOCKED, NULL, "SOCK_DGRAM");