unix.c revision 1.25
1 /* $NetBSD: unix.c,v 1.25 2006/05/11 01:23:20 mrg 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 1.25 2006/05/11 01:23:20 mrg Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 /* 42 * Display protocol blocks in the unix domain. 43 */ 44 #include <sys/param.h> 45 #include <sys/protosw.h> 46 #include <sys/socket.h> 47 #include <sys/socketvar.h> 48 #include <sys/mbuf.h> 49 #include <sys/sysctl.h> 50 #include <sys/un.h> 51 #include <sys/unpcb.h> 52 #define _KERNEL 53 struct uio; 54 struct proc; 55 #include <sys/file.h> 56 57 #include <netinet/in.h> 58 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <kvm.h> 63 #include <err.h> 64 #include "netstat.h" 65 66 static void unixdomainprhdr(void); 67 static void unixdomainpr0(u_long, u_long, u_long, u_long, u_long, u_long, 68 u_long, u_long, u_long, struct sockaddr_un *, int); 69 static void unixdomainpr(struct socket *, caddr_t); 70 71 static struct file *file, *fileNFILE; 72 static int ns_nfiles; 73 extern kvm_t *kvmd; 74 75 static void 76 unixdomainprhdr(void) 77 { 78 printf("Active UNIX domain sockets\n"); 79 printf("%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 80 "Address", "Type", "Recv-Q", "Send-Q", "Inode", "Conn", "Refs", 81 "Nextref"); 82 } 83 84 static char *socktype[] = 85 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 86 87 static void 88 unixdomainpr0(u_long so_pcb, u_long so_type, u_long rcvq, u_long sndq, 89 u_long inode, u_long conn, u_long refs, u_long nextref, 90 u_long addr, struct sockaddr_un *sun, int remote) 91 { 92 printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx", 93 so_pcb, socktype[so_type], rcvq, sndq, inode, conn, refs, 94 nextref); 95 if (addr || remote) 96 printf((remote ? " -> %.*s" : " %.*s"), 97 (int)(sun->sun_len - (sizeof(*sun) - sizeof(sun->sun_path))), 98 sun->sun_path); 99 putchar('\n'); 100 } 101 102 static void 103 unixdomainpr(so, soaddr) 104 struct socket *so; 105 caddr_t soaddr; 106 { 107 struct unpcb unp, runp; 108 struct sockaddr_un sun, rsun; 109 static int first = 1; 110 int remote = 0; 111 112 if (kread((u_long)so->so_pcb, (char *)&unp, sizeof (unp))) 113 return; 114 if (unp.unp_addr) 115 if (kread((u_long)unp.unp_addr, (char *)&sun, sizeof (sun))) 116 unp.unp_addr = 0; 117 118 if (!unp.unp_addr) { 119 memset(&rsun, 0, sizeof(rsun)); 120 if (unp.unp_conn && 121 kread((u_long)unp.unp_conn, (char *)&runp, sizeof (runp)) == 0 && 122 runp.unp_addr && 123 kread((u_long)runp.unp_addr, (char *)&rsun, sizeof (rsun)) == 0 && 124 rsun.sun_path[0] != '\0') 125 remote = 1; 126 } 127 128 if (first) { 129 unixdomainprhdr(); 130 first = 0; 131 } 132 133 unixdomainpr0((u_long)so->so_pcb, so->so_type, so->so_rcv.sb_cc, 134 so->so_snd.sb_cc, (u_long)unp.unp_vnode, 135 (u_long)unp.unp_conn, (u_long)unp.unp_refs, 136 (u_long)unp.unp_nextref, (u_long)unp.unp_addr, 137 remote ? &rsun : &sun, remote); 138 } 139 140 void 141 unixpr(off) 142 u_long off; 143 { 144 struct file *fp; 145 struct socket sock, *so = &sock; 146 char *filebuf; 147 struct protosw *unixsw = (struct protosw *)off; 148 149 if (use_sysctl) { 150 struct kinfo_pcb *pcblist; 151 int mib[8]; 152 size_t namelen = 0, size = 0, i; 153 char *mibname = "net.local.stream.pcblist"; 154 static int first = 1; 155 int done = 0; 156 157 again: 158 memset(mib, 0, sizeof(mib)); 159 160 if (sysctlnametomib(mibname, mib, 161 &namelen) == -1) 162 err(1, "sysctlnametomib"); 163 164 if (sysctl(mib, sizeof(mib) / sizeof(*mib), NULL, &size, 165 NULL, 0) == -1) 166 err(1, "sysctl (query)"); 167 168 pcblist = malloc(size); 169 memset(pcblist, 0, size); 170 171 mib[6] = sizeof(*pcblist); 172 mib[7] = size / sizeof(*pcblist); 173 174 if (sysctl(mib, sizeof(mib) / sizeof(*mib), pcblist, 175 &size, NULL, 0) == -1) 176 err(1, "sysctl (copy)"); 177 178 for (i = 0; i < size / sizeof(*pcblist); i++) { 179 struct kinfo_pcb *ki = &pcblist[i]; 180 struct sockaddr_un *sun; 181 int remote = 0; 182 183 if (first) { 184 unixdomainprhdr(); 185 first = 0; 186 } 187 188 sun = (struct sockaddr_un *)&ki->ki_dst; 189 if (sun->sun_path[0] != '\0') { 190 remote = 1; 191 } else { 192 sun = (struct sockaddr_un *)&ki->ki_src; 193 } 194 195 unixdomainpr0(ki->ki_pcbaddr, ki->ki_type, 196 ki->ki_rcvq, ki->ki_sndq, 197 ki->ki_vnode, ki->ki_conn, ki->ki_refs, 198 ki->ki_nextref, ki->ki_sockaddr, sun, remote); 199 } 200 201 free(pcblist); 202 203 if (!done && mibname) { 204 mibname = "net.local.dgram.pcblist"; 205 done = 1; 206 goto again; 207 } 208 } else { 209 filebuf = (char *)kvm_getfiles(kvmd, KERN_FILE, 0, &ns_nfiles); 210 if (filebuf == 0) { 211 printf("file table read error: %s", kvm_geterr(kvmd)); 212 return; 213 } 214 file = (struct file *)(filebuf + sizeof(fp)); 215 fileNFILE = file + ns_nfiles; 216 for (fp = file; fp < fileNFILE; fp++) { 217 if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET) 218 continue; 219 if (kread((u_long)fp->f_data, (char *)so, sizeof (*so))) 220 continue; 221 /* kludge */ 222 if (so->so_proto >= unixsw && so->so_proto <= unixsw + 2) 223 if (so->so_pcb) 224 unixdomainpr(so, fp->f_data); 225 } 226 } 227 } 228
Indexes created Sun Sep 21 19:09:51 GMT 2025