sys/kern/uipc_proto.c

   1 /*-
   2  * Copyright (c) 1982, 1986, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)uipc_proto.c        8.1 (Berkeley) 6/10/93
  34  * $FreeBSD: src/sys/kern/uipc_proto.c,v 1.21.2.1 2002/03/09 05:22:23 dd Exp $
  35  * $DragonFly: src/sys/kern/uipc_proto.c,v 1.7 2008/10/27 02:56:30 sephe Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/kernel.h>
  40 #include <sys/domain.h>
  41 #include <sys/protosw.h>
  42 #include <sys/socket.h>
  43 #include <sys/queue.h>
  44 #include <sys/sysctl.h>
  45 #include <sys/un.h>
  46
  47 #include <net/raw_cb.h>
  48
  49 /*
  50  * Definitions of protocols supported in the LOCAL domain.
  51  */
  52
  53 static struct protosw localsw[] = {
  54     {
  55         .pr_type = SOCK_STREAM,
  56         .pr_domain = &localdomain,
  57         .pr_protocol = 0,
  58         .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS|PR_SYNC_PORT,
  59         .pr_ctloutput = uipc_ctloutput,
  60         .pr_usrreqs = &uipc_usrreqs
  61     },
  62     {
  63         .pr_type = SOCK_SEQPACKET,
  64         .pr_domain = &localdomain,
  65         .pr_protocol = 0,
  66         .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS|PR_SYNC_PORT|
  67                     PR_ATOMIC,
  68         .pr_ctloutput = uipc_ctloutput,
  69         .pr_usrreqs = &uipc_usrreqs
  70     },
  71     {
  72         .pr_type = SOCK_DGRAM,
  73         .pr_domain = &localdomain,
  74         .pr_protocol = 0,
  75         .pr_flags = PR_RIGHTS|PR_SYNC_PORT|PR_ATOMIC|PR_ADDR,
  76         .pr_ctloutput = NULL,
  77         .pr_usrreqs = &uipc_usrreqs
  78     },
  79     {
  80         .pr_type = 0,
  81         .pr_protocol = 0,
  82         .pr_flags = PR_SYNC_PORT,
  83         .pr_ctlinput = raw_ctlinput,
  84         .pr_ctloutput = NULL,
  85         .pr_init = raw_init,
  86         .pr_usrreqs = &raw_usrreqs
  87     }
  88 };
  89
  90 struct domain localdomain = {
  91         AF_LOCAL, "local", unp_init, unp_externalize, unp_dispose,
  92         localsw, &localsw[sizeof(localsw)/sizeof(localsw[0])],
  93 };
  94
  95 DOMAIN_SET(local);
  96
  97 SYSCTL_NODE(_net, PF_LOCAL, local, CTLFLAG_RW, 0, "Local domain");
  98 SYSCTL_NODE(_net_local, SOCK_STREAM, stream, CTLFLAG_RW, 0, "SOCK_STREAM");
  99 SYSCTL_NODE(_net_local, SOCK_SEQPACKET, seqpacket, CTLFLAG_RW, 0,
 100                         "SOCK_SEQPACKET");
 101 SYSCTL_NODE(_net_local, SOCK_DGRAM, dgram, CTLFLAG_RW, 0, "SOCK_DGRAM");