netstat.tproj/unix.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*-
  26  * Copyright (c) 1983, 1988, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  */
  57
  58 #ifndef lint
  59 #if 0
  60 static char sccsid[] = "@(#)unix.c      8.1 (Berkeley) 6/6/93";
  61 #endif
  62 static const char rcsid[] =
  63         "$Id: unix.c,v 1.2 2001/07/31 05:54:11 wsanchez Exp $";
  64 #endif /* not lint */
  65
  66 /*
  67  * Display protocol blocks in the unix domain.
  68  */
  69 #include <sys/param.h>
  70 #include <sys/queue.h>
  71 #include <sys/protosw.h>
  72 #include <sys/socket.h>
  73 #include <sys/socketvar.h>
  74 #include <sys/mbuf.h>
  75 #include <sys/sysctl.h>
  76 #include <sys/un.h>
  77 #include <sys/unpcb.h>
  78
  79 #include <netinet/in.h>
  80
  81 #include <errno.h>
  82 #include <err.h>
  83 #include <stddef.h>
  84 #include <stdio.h>
  85 #include <stdlib.h>
  86 #include <kvm.h>
  87 #include "netstat.h"
  88
  89 static  void unixdomainpr __P((struct xunpcb *, struct xsocket *));
  90
  91 static  const char *const socktype[] =
  92     { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
  93
  94 void
  95 unixpr()
  96 {
  97         char    *buf;
  98         int     type;
  99         size_t  len;
 100         struct  xsocket *so;
 101         struct  xunpgen *xug, *oxug;
 102         struct  xunpcb *xunp;
 103         char mibvar[sizeof "net.local.seqpacket.pcblist"];
 104
 105         for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) {
 106                 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]);
 107
 108                 len = 0;
 109                 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 110                         if (errno != ENOENT)
 111                                 warn("sysctl: %s", mibvar);
 112                         continue;
 113                 }
 114                 if ((buf = malloc(len)) == 0) {
 115                         warn("malloc %lu bytes", (u_long)len);
 116                         return;
 117                 }
 118                 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 119                         warn("sysctl: %s", mibvar);
 120                         free(buf);
 121                         return;
 122                 }
 123
 124                 oxug = xug = (struct xunpgen *)buf;
 125                 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
 126                      xug->xug_len > sizeof(struct xunpgen);
 127                      xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
 128                         xunp = (struct xunpcb *)xug;
 129                         so = &xunp->xu_socket;
 130
 131                         /* Ignore PCBs which were freed during copyout. */
 132                         if (xunp->xu_unp.unp_gencnt > oxug->xug_gen)
 133                                 continue;
 134                         unixdomainpr(xunp, so);
 135                 }
 136                 if (xug != oxug && xug->xug_gen != oxug->xug_gen) {
 137                         if (oxug->xug_count > xug->xug_count) {
 138                                 printf("Some %s sockets may have been deleted.\n",
 139                                        socktype[type]);
 140                         } else if (oxug->xug_count < xug->xug_count) {
 141                                 printf("Some %s sockets may have been created.\n",
 142                                socktype[type]);
 143                         } else {
 144                                 printf("Some %s sockets may have been created or deleted\n",
 145                                socktype[type]);
 146                         }
 147                 }
 148                 free(buf);
 149         }
 150 }
 151
 152 static void
 153 unixdomainpr(xunp, so)
 154         struct xunpcb *xunp;
 155         struct xsocket *so;
 156 {
 157         struct unpcb *unp;
 158         struct sockaddr_un *sa;
 159         static int first = 1;
 160
 161         unp = &xunp->xu_unp;
 162         if (unp->unp_addr)
 163                 sa = &xunp->xu_addr;
 164         else
 165                 sa = (struct sockaddr_un *)0;
 166
 167         if (first) {
 168                 printf("Active LOCAL (UNIX) domain sockets\n");
 169                 printf(
 170 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
 171                     "Address", "Type", "Recv-Q", "Send-Q",
 172                     "Inode", "Conn", "Refs", "Nextref");
 173                 first = 0;
 174         }
 175         printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx",
 176                (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
 177                so->so_snd.sb_cc,
 178                (long)unp->unp_vnode, (long)unp->unp_conn,
 179                (long)unp->unp_refs.lh_first, (long)unp->unp_reflink.le_next);
 180         if (sa)
 181                 printf(" %.*s",
 182                     (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)),
 183                     sa->sun_path);
 184         putchar('\n');
 185 }