1 /* $NetBSD: unix.c,v 1.31 2010/12/13 21:15:30 pooka Exp $ */ 2 3 /*- 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "from: @(#)unix.c 8.1 (Berkeley) 6/6/93"; 36 #else 37 __RCSID("$NetBSD: unix.c,v 1.31 2010/12/13 21:15:30 pooka Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 /* 42 * Display protocol blocks in the unix domain. 43 */ 44 #define _KERNEL 45 #include <sys/types.h> 46 #undef _KERNEL 47 #include <sys/param.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 #define _KERNEL 56 #include <sys/file.h> 57 #undef _KERNEL 58 59 #include <netinet/in.h> 60 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <kvm.h> 65 #include <err.h> 66 #include "netstat.h" 67 #include "prog_ops.h" 68 69 static void unixdomainprhdr(void); 70 static void unixdomainpr0(u_long, u_long, u_long, u_long, u_long, u_long, 71 u_long, u_long, u_long, struct sockaddr_un *, int); 72 static void unixdomainpr(struct socket *, void *); 73 74 static struct file *file, *fileNFILE; 75 static int ns_nfiles; 76 extern kvm_t *kvmd; 77 78 static void 79 unixdomainprhdr(void) 80 { 81 printf("Active UNIX domain sockets\n"); 82 printf("%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 83 "Address", "Type", "Recv-Q", "Send-Q", "Inode", "Conn", "Refs", 84 "Nextref"); 85 } 86 87 static const char *socktype[] = 88 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 89 90 static void 91 unixdomainpr0(u_long so_pcb, u_long so_type, u_long rcvq, u_long sndq, 92 u_long inode, u_long conn, u_long refs, u_long nextref, 93 u_long addr, struct sockaddr_un *sun, int remote) 94 { 95 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 96 so_pcb, socktype[so_type], rcvq, sndq, inode, conn, refs, 97 nextref); 98 if (addr || remote) 99 printf((remote ? " -> %.*s" : " %.*s"), 100 (int)(sun->sun_len - (sizeof(*sun) - sizeof(sun->sun_path))), 101 sun->sun_path); 102 putchar('\n'); 103 } 104 105 static void 106 unixdomainpr(so, soaddr) 107 struct socket *so; 108 void *soaddr; 109 { 110 struct unpcb unp, runp; 111 struct sockaddr_un sun, rsun; 112 static int first = 1; 113 int remote = 0; 114 115 if (kread((u_long)so->so_pcb, (char *)&unp, sizeof (unp))) 116 return; 117 if (unp.unp_addr) 118 if (kread((u_long)unp.unp_addr, (char *)&sun, sizeof (sun))) 119 unp.unp_addr = 0; 120 121 if (!unp.unp_addr) { 122 memset(&rsun, 0, sizeof(rsun)); 123 if (unp.unp_conn && 124 kread((u_long)unp.unp_conn, (char *)&runp, sizeof (runp)) == 0 && 125 runp.unp_addr && 126 kread((u_long)runp.unp_addr, (char *)&rsun, sizeof (rsun)) == 0 && 127 rsun.sun_path[0] != '\0') 128 remote = 1; 129 } 130 131 if (first) { 132 unixdomainprhdr(); 133 first = 0; 134 } 135 136 unixdomainpr0((u_long)so->so_pcb, so->so_type, so->so_rcv.sb_cc, 137 so->so_snd.sb_cc, (u_long)unp.unp_vnode, 138 (u_long)unp.unp_conn, (u_long)unp.unp_refs, 139 (u_long)unp.unp_nextref, (u_long)unp.unp_addr, 140 remote ? &rsun : &sun, remote); 141 } 142 143 void 144 unixpr(off) 145 u_long off; 146 { 147 struct file *fp; 148 struct socket sock, *so = &sock; 149 char *filebuf; 150 struct protosw *unixsw = (struct protosw *)off; 151 152 if (use_sysctl) { 153 struct kinfo_pcb *pcblist; 154 int mib[8]; 155 size_t namelen = 0, size = 0, i; 156 const char *mibname = "net.local.stream.pcblist"; 157 static int first = 1; 158 int done = 0; 159 160 again: 161 memset(mib, 0, sizeof(mib)); 162 163 if (sysctlnametomib(mibname, mib, 164 &namelen) == -1) 165 err(1, "sysctlnametomib: %s", mibname); 166 167 if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib), 168 NULL, &size, NULL, 0) == -1) 169 err(1, "sysctl (query)"); 170 171 if ((pcblist = malloc(size)) == NULL) 172 err(1, "malloc"); 173 memset(pcblist, 0, size); 174 175 mib[6] = sizeof(*pcblist); 176 mib[7] = size / sizeof(*pcblist); 177 178 if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib), pcblist, 179 &size, NULL, 0) == -1) 180 err(1, "sysctl (copy)"); 181 182 for (i = 0; i < size / sizeof(*pcblist); i++) { 183 struct kinfo_pcb *ki = &pcblist[i]; 184 struct sockaddr_un *sun; 185 int remote = 0; 186 187 if (first) { 188 unixdomainprhdr(); 189 first = 0; 190 } 191 192 sun = (struct sockaddr_un *)&ki->ki_dst; 193 if (sun->sun_path[0] != '\0') { 194 remote = 1; 195 } else { 196 sun = (struct sockaddr_un *)&ki->ki_src; 197 } 198 199 unixdomainpr0(ki->ki_pcbaddr, ki->ki_type, 200 ki->ki_rcvq, ki->ki_sndq, 201 ki->ki_vnode, ki->ki_conn, ki->ki_refs, 202 ki->ki_nextref, ki->ki_sockaddr, sun, remote); 203 } 204 205 free(pcblist); 206 207 if (!done && mibname) { 208 mibname = "net.local.dgram.pcblist"; 209 done = 1; 210 goto again; 211 } 212 } else { 213 filebuf = (char *)kvm_getfiles(kvmd, KERN_FILE, 0, &ns_nfiles); 214 if (filebuf == 0) { 215 printf("file table read error: %s", kvm_geterr(kvmd)); 216 return; 217 } 218 file = (struct file *)(filebuf + sizeof(fp)); 219 fileNFILE = file + ns_nfiles; 220 for (fp = file; fp < fileNFILE; fp++) { 221 if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET) 222 continue; 223 if (kread((u_long)fp->f_data, (char *)so, sizeof (*so))) 224 continue; 225 /* kludge */ 226 if (so->so_proto >= unixsw && so->so_proto <= unixsw + 2) 227 if (so->so_pcb) 228 unixdomainpr(so, fp->f_data); 229 } 230 } 231 } 232