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 1.2 2003/06/17 04:29:30 dillon 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 char *buf; 70 int type; 71 size_t len; 72 struct xsocket *so; 73 struct xunpgen *xug, *oxug; 74 struct xunpcb *xunp; 75 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 76 77 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 78 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 79 80 len = 0; 81 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 82 if (errno != ENOENT) 83 warn("sysctl: %s", mibvar); 84 continue; 85 } 86 if ((buf = malloc(len)) == 0) { 87 warn("malloc %lu bytes", (u_long)len); 88 return; 89 } 90 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 91 warn("sysctl: %s", mibvar); 92 free(buf); 93 return; 94 } 95 96 oxug = xug = (struct xunpgen *)buf; 97 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 98 xug->xug_len > sizeof(struct xunpgen); 99 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 100 xunp = (struct xunpcb *)xug; 101 so = &xunp->xu_socket; 102 103 /* Ignore PCBs which were freed during copyout. */ 104 if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 105 continue; 106 unixdomainpr(xunp, so); 107 } 108 if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 109 if (oxug->xug_count > xug->xug_count) { 110 printf("Some %s sockets may have been deleted.\n", 111 socktype[type]); 112 } else if (oxug->xug_count < xug->xug_count) { 113 printf("Some %s sockets may have been created.\n", 114 socktype[type]); 115 } else { 116 printf("Some %s sockets may have been created or deleted", 117 socktype[type]); 118 } 119 } 120 free(buf); 121 } 122 } 123 124 static void 125 unixdomainpr(struct xunpcb *xunp, struct xsocket *so) 126 { 127 struct unpcb *unp; 128 struct sockaddr_un *sa; 129 static int first = 1; 130 131 unp = &xunp->xu_unp; 132 if (unp->unp_addr) 133 sa = &xunp->xu_addr; 134 else 135 sa = (struct sockaddr_un *)0; 136 137 if (first) { 138 printf("Active UNIX domain sockets\n"); 139 printf( 140 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 141 "Address", "Type", "Recv-Q", "Send-Q", 142 "Inode", "Conn", "Refs", "Nextref"); 143 first = 0; 144 } 145 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 146 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 147 so->so_snd.sb_cc, 148 (long)unp->unp_vnode, (long)unp->unp_conn, 149 (long)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink)); 150 if (sa) 151 printf(" %.*s", 152 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 153 sa->sun_path); 154 putchar('\n'); 155 } 156