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