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 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)unix.c 8.1 (Berkeley) 6/6/93"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD: src/usr.bin/netstat/unix.c,v 1.12.2.2 2001/08/10 09:07:09 ru Exp $"; 40 #endif /* not lint */ 41 42 /* 43 * Display protocol blocks in the unix domain. 44 */ 45 #include <sys/param.h> 46 #include <sys/queue.h> 47 #include <sys/protosw.h> 48 #include <sys/socket.h> 49 #include <sys/socketvar.h> 50 #include <sys/mbuf.h> 51 #include <sys/sysctl.h> 52 #include <sys/un.h> 53 #include <sys/unpcb.h> 54 55 #include <netinet/in.h> 56 57 #include <errno.h> 58 #include <err.h> 59 #include <stddef.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <kvm.h> 63 #include "netstat.h" 64 65 static void unixdomainpr (struct xunpcb *, struct xsocket *); 66 67 static const char *const socktype[] = 68 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 69 70 void 71 unixpr(void) 72 { 73 char *buf; 74 int type; 75 size_t len; 76 struct xsocket *so; 77 struct xunpgen *xug, *oxug; 78 struct xunpcb *xunp; 79 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 80 81 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 82 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 83 84 len = 0; 85 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 86 if (errno != ENOENT) 87 warn("sysctl: %s", mibvar); 88 continue; 89 } 90 if ((buf = malloc(len)) == 0) { 91 warn("malloc %lu bytes", (u_long)len); 92 return; 93 } 94 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 95 warn("sysctl: %s", mibvar); 96 free(buf); 97 return; 98 } 99 100 oxug = xug = (struct xunpgen *)buf; 101 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 102 xug->xug_len > sizeof(struct xunpgen); 103 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 104 xunp = (struct xunpcb *)xug; 105 so = &xunp->xu_socket; 106 107 /* Ignore PCBs which were freed during copyout. */ 108 if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 109 continue; 110 unixdomainpr(xunp, so); 111 } 112 if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 113 if (oxug->xug_count > xug->xug_count) { 114 printf("Some %s sockets may have been deleted.\n", 115 socktype[type]); 116 } else if (oxug->xug_count < xug->xug_count) { 117 printf("Some %s sockets may have been created.\n", 118 socktype[type]); 119 } else { 120 printf("Some %s sockets may have been created or deleted", 121 socktype[type]); 122 } 123 } 124 free(buf); 125 } 126 } 127 128 static void 129 unixdomainpr(struct xunpcb *xunp, struct xsocket *so) 130 { 131 struct unpcb *unp; 132 struct sockaddr_un *sa; 133 static int first = 1; 134 135 unp = &xunp->xu_unp; 136 if (unp->unp_addr) 137 sa = &xunp->xu_addr; 138 else 139 sa = (struct sockaddr_un *)0; 140 141 if (first) { 142 printf("Active UNIX domain sockets\n"); 143 printf( 144 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 145 "Address", "Type", "Recv-Q", "Send-Q", 146 "Inode", "Conn", "Refs", "Nextref"); 147 first = 0; 148 } 149 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 150 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 151 so->so_snd.sb_cc, 152 (long)unp->unp_vnode, (long)unp->unp_conn, 153 (long)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink)); 154 if (sa) 155 printf(" %.*s", 156 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 157 sa->sun_path); 158 putchar('\n'); 159 } 160