1 /*- 2 * Copyright (c) 1983, 1988, 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 * @(#)unix.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.bin/netstat/unix.c,v 1.12.2.2 2001/08/10 09:07:09 ru Exp $ 35 * $DragonFly: src/usr.bin/netstat/unix.c,v 1.4 2005/03/05 13:23:15 hmp Exp $ 36 */ 37 38 /* 39 * Display protocol blocks in the unix domain. 40 */ 41 #include <sys/param.h> 42 #include <sys/queue.h> 43 #include <sys/protosw.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/mbuf.h> 47 #include <sys/sysctl.h> 48 #include <sys/un.h> 49 #include <sys/unpcb.h> 50 51 #include <netinet/in.h> 52 53 #include <errno.h> 54 #include <err.h> 55 #include <stddef.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <kvm.h> 59 #include "netstat.h" 60 61 static void unixdomainpr (struct xunpcb *, struct xsocket *); 62 63 static const char *const socktype[] = 64 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 65 66 void 67 unixpr(void) 68 { 69 void *buf; 70 int type; 71 size_t i, len; 72 struct xunpcb *xunp; 73 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 74 75 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 76 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 77 78 len = 0; 79 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 80 if (errno != ENOENT) 81 warn("sysctl: %s", mibvar); 82 continue; 83 } 84 if ((buf = malloc(len)) == 0) { 85 warn("malloc %lu bytes", (u_long)len); 86 return; 87 } 88 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 89 warn("sysctl: %s", mibvar); 90 free(buf); 91 return; 92 } 93 94 xunp = (struct xunpcb *)buf; 95 len /= sizeof(*xunp); 96 for (i = 0; i < len; i++) { 97 if (xunp[i].xu_len != sizeof(*xunp)) { 98 warnx("sysctl: ABI mismatch"); 99 free(buf); 100 return; 101 } 102 unixdomainpr(&xunp[i], &xunp[i].xu_socket); 103 } 104 free(buf); 105 } 106 } 107 108 static void 109 unixdomainpr(struct xunpcb *xunp, struct xsocket *so) 110 { 111 struct unpcb *unp; 112 struct sockaddr_un *sa; 113 static int first = 1; 114 115 unp = &xunp->xu_unp; 116 if (unp->unp_addr) 117 sa = &xunp->xu_addr; 118 else 119 sa = NULL; 120 121 if (first) { 122 printf("Active UNIX domain sockets\n"); 123 printf( 124 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 125 "Address", "Type", "Recv-Q", "Send-Q", 126 "Inode", "Conn", "Refs", "Nextref"); 127 first = 0; 128 } 129 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 130 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 131 so->so_snd.sb_cc, 132 (long)unp->unp_vnode, (long)unp->unp_conn, 133 (long)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink)); 134 if (sa) 135 printf(" %.*s", 136 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 137 sa->sun_path); 138 putchar('\n'); 139 } 140