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 <stdint.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <kvm.h> 65 #include "netstat.h" 66 67 static void unixdomainpr (struct xunpcb *, struct xsocket *); 68 69 static const char *const socktype[] = 70 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 71 72 void 73 unixpr(void) 74 { 75 char *buf; 76 int type; 77 size_t len; 78 struct xsocket *so; 79 struct xunpgen *xug, *oxug; 80 struct xunpcb *xunp; 81 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 82 83 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 84 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 85 86 len = 0; 87 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 88 if (errno != ENOENT) 89 warn("sysctl: %s", mibvar); 90 continue; 91 } 92 if ((buf = malloc(len)) == 0) { 93 warnx("malloc %lu bytes", (u_long)len); 94 return; 95 } 96 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 97 warn("sysctl: %s", mibvar); 98 free(buf); 99 return; 100 } 101 102 oxug = xug = (struct xunpgen *)buf; 103 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 104 xug->xug_len > sizeof(struct xunpgen); 105 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 106 xunp = (struct xunpcb *)xug; 107 so = &xunp->xu_socket; 108 109 /* Ignore PCBs which were freed during copyout. */ 110 if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 111 continue; 112 unixdomainpr(xunp, so); 113 } 114 if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 115 if (oxug->xug_count > xug->xug_count) { 116 printf("Some %s sockets may have been deleted.\n", 117 socktype[type]); 118 } else if (oxug->xug_count < xug->xug_count) { 119 printf("Some %s sockets may have been created.\n", 120 socktype[type]); 121 } else { 122 printf("Some %s sockets may have been created or deleted", 123 socktype[type]); 124 } 125 } 126 free(buf); 127 } 128 } 129 130 static void 131 unixdomainpr(struct xunpcb *xunp, struct xsocket *so) 132 { 133 struct unpcb *unp; 134 struct sockaddr_un *sa; 135 static int first = 1; 136 137 unp = &xunp->xu_unp; 138 if (unp->unp_addr) 139 sa = &xunp->xu_addr; 140 else 141 sa = (struct sockaddr_un *)0; 142 143 if (first) { 144 printf("Active UNIX domain sockets\n"); 145 printf( 146 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 147 "Address", "Type", "Recv-Q", "Send-Q", 148 "Inode", "Conn", "Refs", "Nextref"); 149 first = 0; 150 } 151 printf("%8lx %-6.6s %6u %6u %8lx %8lx %8lx %8lx", 152 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 153 so->so_snd.sb_cc, 154 (long)unp->unp_vnode, (long)unp->unp_conn, 155 (long)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink)); 156 if (sa) 157 printf(" %.*s", 158 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 159 sa->sun_path); 160 putchar('\n'); 161 } 162