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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)unix.c 8.1 (Berkeley) 6/6/93 30 * $FreeBSD: src/usr.bin/netstat/unix.c,v 1.12.2.2 2001/08/10 09:07:09 ru Exp $ 31 */ 32 33 /* 34 * Display protocol blocks in the unix domain. 35 */ 36 #include <sys/param.h> 37 #include <sys/queue.h> 38 #include <sys/protosw.h> 39 #include <sys/socket.h> 40 #include <sys/socketvar.h> 41 #include <sys/mbuf.h> 42 #include <sys/sysctl.h> 43 #include <sys/un.h> 44 #include <sys/unpcb.h> 45 46 #include <netinet/in.h> 47 48 #include <errno.h> 49 #include <err.h> 50 #include <stddef.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <kvm.h> 54 #include "netstat.h" 55 56 static void unixdomainpr (struct xunpcb *, struct xsocket *); 57 58 static const char *const socktype[] = 59 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 60 61 void 62 unixpr(void) 63 { 64 void *buf; 65 int type; 66 size_t i, len; 67 struct xunpcb *xunp; 68 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 69 70 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 71 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 72 73 len = 0; 74 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 75 if (errno != ENOENT) 76 warn("sysctl: %s", mibvar); 77 continue; 78 } 79 if ((buf = malloc(len)) == NULL) { 80 warn("malloc %lu bytes", (u_long)len); 81 return; 82 } 83 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 84 warn("sysctl: %s", mibvar); 85 free(buf); 86 return; 87 } 88 89 xunp = (struct xunpcb *)buf; 90 len /= sizeof(*xunp); 91 for (i = 0; i < len; i++) { 92 if (xunp[i].xu_len != sizeof(*xunp)) { 93 warnx("sysctl: ABI mismatch"); 94 free(buf); 95 return; 96 } 97 unixdomainpr(&xunp[i], &xunp[i].xu_socket); 98 } 99 free(buf); 100 } 101 } 102 103 static void 104 unixdomainpr(struct xunpcb *xunp, struct xsocket *so) 105 { 106 struct unpcb *unp; 107 struct sockaddr_un *sa; 108 static int first = 1; 109 110 unp = &xunp->xu_unp; 111 if (unp->unp_addr) 112 sa = &xunp->xu_addr; 113 else 114 sa = NULL; 115 116 if (first) { 117 printf("Active UNIX domain sockets\n"); 118 printf( 119 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 120 "Address", "Type", "Recv-Q", "Send-Q", 121 "Inode", "Conn", "Refs", "Nextref"); 122 first = 0; 123 } 124 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 125 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 126 so->so_snd.sb_cc, 127 (long)unp->unp_vnode, (long)unp->unp_conn, 128 (long)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink)); 129 if (sa) 130 printf(" %.*s", 131 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 132 sa->sun_path); 133 putchar('\n'); 134 } 135