bsd/kern/uipc_proto.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  31 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  32 /*-
  33  * Copyright (c) 1982, 1986, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)uipc_proto.c        8.2 (Berkeley) 2/14/95
  65  */
  66
  67 #include <sys/param.h>
  68 #include <sys/socket.h>
  69 #include <sys/protosw.h>
  70 #include <sys/domain.h>
  71 #include <sys/mbuf.h>
  72 #include <sys/un.h>
  73 #include <net/raw_cb.h>
  74 #include <sys/sysctl.h>
  75
  76 /*
  77  * Definitions of protocols supported in the UNIX domain.
  78  */
  79
  80 int     uipc_usrreq(), raw_usrreq();
  81 void    raw_init(), raw_input(), raw_ctlinput();
  82 extern  struct domain localdomain;              /* or at least forward */
  83
  84 static struct protosw localsw[] = {
  85 { SOCK_STREAM,  &localdomain,   0,      PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
  86   0,            0,              0,              uipc_ctloutput,
  87   0,
  88   0,            0,              0,              0,
  89   0,
  90   &uipc_usrreqs,
  91   0,            0,              0
  92
  93 },
  94 { SOCK_DGRAM,   &localdomain,   0,              PR_ATOMIC|PR_ADDR|PR_RIGHTS,
  95   0,            0,              0,              uipc_ctloutput,
  96   0,
  97   0,            0,              0,              0,
  98   0,
  99   &uipc_usrreqs,
 100   0,            0,              0
 101 },
 102 { 0,            0,              0,              0,
 103   0,            0,              raw_ctlinput,   0,
 104   0,
 105   0,            0,              0,              0,
 106   0,
 107   &raw_usrreqs,
 108   0,                    0,              0
 109 }
 110 };
 111
 112 int local_proto_count = (sizeof (localsw) / sizeof (struct protosw));
 113
 114 static void pre_unp_init()
 115 {       static int localdomain_initted = 0;
 116         register int i;
 117         register struct protosw *pr;
 118         register struct domain *dp = &localdomain;
 119
 120         for (i=0, pr = &localsw[0]; i<local_proto_count; i++, pr++)
 121                 net_add_proto(pr, dp);
 122         unp_init();
 123 }
 124
 125 struct domain localdomain =
 126     { AF_LOCAL, "unix", pre_unp_init, unp_externalize, unp_dispose,
 127       localsw};
 128
 129
 130
 131
 132 SYSCTL_NODE(_net, PF_LOCAL, local, CTLFLAG_RW, 0, "Local domain");
 133 SYSCTL_NODE(_net_local, SOCK_STREAM, stream, CTLFLAG_RW, 0, "SOCK_STREAM");
 134 SYSCTL_NODE(_net_local, SOCK_DGRAM, dgram, CTLFLAG_RW, 0, "SOCK_DGRAM");
 135