netstat.tproj/unix.c

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