unix.c revision 37453
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 36static char sccsid[] = "@(#)unix.c 8.1 (Berkeley) 6/6/93"; 37#endif 38static const char rcsid[] = 39 "$Id: unix.c,v 1.8 1998/05/16 18:04:00 wollman 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 <stddef.h> 59#include <stdio.h> 60#include <stdlib.h> 61#include <kvm.h> 62#include "netstat.h" 63 64static void unixdomainpr __P((struct xunpcb *, struct xsocket *)); 65 66static const char *const socktype[] = 67 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 68 69void 70unixpr() 71{ 72 char *buf; 73 int type; 74 size_t len; 75 struct xsocket *so; 76 struct xunpgen *xug, *oxug; 77 struct xunpcb *xunp; 78 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 79 80 for (type = SOCK_STREAM; type < SOCK_SEQPACKET; type++) { 81 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 82 83 len = 0; 84 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 85 if (errno != ENOENT) 86 warn("sysctl: %s", mibvar); 87 continue; 88 } 89 if ((buf = malloc(len)) == 0) { 90 warn("malloc %lu bytes", (u_long)len); 91 return; 92 } 93 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 94 warn("sysctl: %s", mibvar); 95 free(buf); 96 return; 97 } 98 99 oxug = xug = (struct xunpgen *)buf; 100 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 101 xug->xug_len > sizeof(struct xunpgen); 102 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 103 xunp = (struct xunpcb *)xug; 104 so = &xunp->xu_socket; 105 106 /* Ignore PCBs which were freed during copyout. */ 107 if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 108 continue; 109 unixdomainpr(xunp, so); 110 } 111 if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 112 if (oxug->xug_count > xug->xug_count) { 113 printf("Some %s sockets may have been deleted.\n", 114 socktype[type]); 115 } else if (oxug->xug_count < xug->xug_count) { 116 printf("Some %s sockets may have been created.\n", 117 socktype[type]); 118 } else { 119 printf("Some %s sockets may have been created or deleted", 120 socktype[type]); 121 } 122 } 123 free(buf); 124 } 125} 126 127static void 128unixdomainpr(xunp, so) 129 struct xunpcb *xunp; 130 struct xsocket *so; 131{ 132 struct unpcb *unp; 133 struct sockaddr_un *sa; 134 static int first = 1; 135 136 unp = &xunp->xu_unp; 137 if (unp->unp_addr) 138 sa = &xunp->xu_addr; 139 else 140 sa = (struct sockaddr_un *)0; 141 142 if (first) { 143 printf("Active UNIX domain sockets\n"); 144 printf( 145"%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 146 "Address", "Type", "Recv-Q", "Send-Q", 147 "Inode", "Conn", "Refs", "Nextref"); 148 first = 0; 149 } 150 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 151 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 152 so->so_snd.sb_cc, 153 (long)unp->unp_vnode, (long)unp->unp_conn, 154 (long)unp->unp_refs.lh_first, (long)unp->unp_reflink.le_next); 155 if (sa) 156 printf(" %.*s", 157 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 158 sa->sun_path); 159 putchar('\n'); 160} 161