netstat.tproj/unix.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*-
  25  * Copyright (c) 1983, 1988, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57 #ifndef lint
  58 #if 0
  59 static char sccsid[] = "@(#)unix.c      8.1 (Berkeley) 6/6/93";
  60 #endif
  61 static const char rcsid[] =
  62         "$Id: unix.c,v 1.3 2004/08/26 23:55:22 lindak Exp $";
  63 #endif /* not lint */
  64
  65 /*
  66  * Display protocol blocks in the unix domain.
  67  */
  68 #include <sys/param.h>
  69 #include <sys/queue.h>
  70 #include <sys/socket.h>
  71 #include <sys/socketvar.h>
  72 #include <sys/mbuf.h>
  73 #include <sys/sysctl.h>
  74 #include <sys/un.h>
  75 #include <sys/unpcb.h>
  76
  77 #include <netinet/in.h>
  78
  79 #include <errno.h>
  80 #include <err.h>
  81 #include <stddef.h>
  82 #include <stdio.h>
  83 #include <stdlib.h>
  84 #include <kvm.h>
  85 #include "netstat.h"
  86
  87 static  void unixdomainpr __P((struct xunpcb *, struct xsocket *));
  88
  89 static  const char *const socktype[] =
  90     { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
  91
  92 void
  93 unixpr()
  94 {
  95         char    *buf;
  96         int     type;
  97         size_t  len;
  98         struct  xsocket *so;
  99         struct  xunpgen *xug, *oxug;
 100         struct  xunpcb *xunp;
 101         char mibvar[sizeof "net.local.seqpacket.pcblist"];
 102
 103         for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) {
 104                 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]);
 105
 106                 len = 0;
 107                 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 108                         if (errno != ENOENT)
 109                                 warn("sysctl: %s", mibvar);
 110                         continue;
 111                 }
 112                 if ((buf = malloc(len)) == 0) {
 113                         warn("malloc %lu bytes", (u_long)len);
 114                         return;
 115                 }
 116                 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 117                         warn("sysctl: %s", mibvar);
 118                         free(buf);
 119                         return;
 120                 }
 121
 122                 oxug = xug = (struct xunpgen *)buf;
 123                 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
 124                      xug->xug_len > sizeof(struct xunpgen);
 125                      xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
 126                         xunp = (struct xunpcb *)xug;
 127                         so = &xunp->xu_socket;
 128
 129                         /* Ignore PCBs which were freed during copyout. */
 130                         if (xunp->xu_unp.unp_gencnt > oxug->xug_gen)
 131                                 continue;
 132                         unixdomainpr(xunp, so);
 133                 }
 134                 if (xug != oxug && xug->xug_gen != oxug->xug_gen) {
 135                         if (oxug->xug_count > xug->xug_count) {
 136                                 printf("Some %s sockets may have been deleted.\n",
 137                                        socktype[type]);
 138                         } else if (oxug->xug_count < xug->xug_count) {
 139                                 printf("Some %s sockets may have been created.\n",
 140                                socktype[type]);
 141                         } else {
 142                                 printf("Some %s sockets may have been created or deleted\n",
 143                                socktype[type]);
 144                         }
 145                 }
 146                 free(buf);
 147         }
 148 }
 149
 150 static void
 151 unixdomainpr(xunp, so)
 152         struct xunpcb *xunp;
 153         struct xsocket *so;
 154 {
 155         struct unpcb *unp;
 156         struct sockaddr_un *sa;
 157         static int first = 1;
 158
 159         unp = &xunp->xu_unp;
 160         if (unp->unp_addr)
 161                 sa = &xunp->xu_addr;
 162         else
 163                 sa = (struct sockaddr_un *)0;
 164
 165         if (first) {
 166                 printf("Active LOCAL (UNIX) domain sockets\n");
 167                 printf(
 168 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
 169                     "Address", "Type", "Recv-Q", "Send-Q",
 170                     "Inode", "Conn", "Refs", "Nextref");
 171                 first = 0;
 172         }
 173         printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx",
 174                (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
 175                so->so_snd.sb_cc,
 176                (long)unp->unp_vnode, (long)unp->unp_conn,
 177                (long)unp->unp_refs.lh_first, (long)unp->unp_reflink.le_next);
 178         if (sa)
 179                 printf(" %.*s",
 180                     (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)),
 181                     sa->sun_path);
 182         putchar('\n');
 183 }