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 #if 0 35 #ifndef lint 36 static char sccsid[] = "@(#)unix.c 8.1 (Berkeley) 6/6/93"; 37 #endif /* not lint */ 38 #endif 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 /* 44 * Display protocol blocks in the unix domain. 45 */ 46 #include <sys/param.h> 47 #include <sys/queue.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/mbuf.h> 52 #include <sys/sysctl.h> 53 #include <sys/un.h> 54 #include <sys/unpcb.h> 55 56 #include <netinet/in.h> 57 58 #include <errno.h> 59 #include <err.h> 60 #include <stddef.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <kvm.h> 64 #include "netstat.h" 65 66 static void unixdomainpr (struct xunpcb *, struct xsocket *); 67 68 static const char *const socktype[] = 69 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 70 71 void 72 unixpr(void) 73 { 74 char *buf; 75 int type; 76 size_t len; 77 struct xsocket *so; 78 struct xunpgen *xug, *oxug; 79 struct xunpcb *xunp; 80 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 81 82 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 83 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 84 85 len = 0; 86 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 87 if (errno != ENOENT) 88 warn("sysctl: %s", mibvar); 89 continue; 90 } 91 if ((buf = malloc(len)) == 0) { 92 warnx("malloc %lu bytes", (u_long)len); 93 return; 94 } 95 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 96 warn("sysctl: %s", mibvar); 97 free(buf); 98 return; 99 } 100 101 oxug = xug = (struct xunpgen *)buf; 102 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 103 xug->xug_len > sizeof(struct xunpgen); 104 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 105 xunp = (struct xunpcb *)xug; 106 so = &xunp->xu_socket; 107 108 /* Ignore PCBs which were freed during copyout. */ 109 if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 110 continue; 111 unixdomainpr(xunp, so); 112 } 113 if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 114 if (oxug->xug_count > xug->xug_count) { 115 printf("Some %s sockets may have been deleted.\n", 116 socktype[type]); 117 } else if (oxug->xug_count < xug->xug_count) { 118 printf("Some %s sockets may have been created.\n", 119 socktype[type]); 120 } else { 121 printf("Some %s sockets may have been created or deleted", 122 socktype[type]); 123 } 124 } 125 free(buf); 126 } 127 } 128 129 static void 130 unixdomainpr(struct xunpcb *xunp, 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 %6u %6u %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)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink)); 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