1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * University Copyright- Copyright (c) 1982, 1986, 1988 31 * The Regents of the University of California 32 * All Rights Reserved 33 * 34 * University Acknowledgment- Portions of this document are derived from 35 * software developed by the University of California, Berkeley, and its 36 * contributors. 37 */ 38 39 /* 40 * code for netstat's -k option 41 * 42 * NOTES: 43 * 1. A comment "LINTED: (note 1)" appears before certain lines where 44 * lint would have complained, "pointer cast may result in improper 45 * alignment". These are lines where lint had suspected potential 46 * improper alignment of a data structure; in each such situation 47 * we have relied on the kernel guaranteeing proper alignment. 48 */ 49 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 #include <strings.h> 54 #include <string.h> 55 #include <kstat.h> 56 57 #include <sys/types.h> 58 #include <sys/socket.h> 59 #include <sys/stream.h> 60 #include <sys/tiuser.h> 61 #include <sys/socketvar.h> 62 #include <sys/sysmacros.h> 63 64 static char *typetoname(t_scalar_t); 65 static void print_kn(kstat_t *); 66 static char *nextstr(char *); 67 extern void fail(int, char *, ...); 68 69 #define NALEN 8 /* nulladdress string length */ 70 71 /* 72 * Print a summary of connections related to a unix protocol. 73 */ 74 void 75 unixpr(kstat_ctl_t *kc) 76 { 77 kstat_t *ksp; 78 79 if (kc == NULL) { /* sanity check. */ 80 fail(0, "unixpr: No kstat"); 81 exit(3); 82 } 83 84 /* find the sockfs kstat: */ 85 if ((ksp = kstat_lookup(kc, "sockfs", 0, "sock_unix_list")) == 86 (kstat_t *)NULL) { 87 fail(0, "kstat_data_lookup failed\n"); 88 } 89 90 if (kstat_read(kc, ksp, NULL) == -1) { 91 fail(0, "kstat_read failed for sock_unix_list\n"); 92 } 93 94 print_kn(ksp); 95 } 96 97 static void 98 print_kn(kstat_t *ksp) 99 { 100 int i; 101 struct sockinfo *psi; /* ptr to current sockinfo */ 102 char *pas; /* ptr to string-format addrs */ 103 char *nullstr; /* ptr to null string */ 104 char *conn_vp; 105 char *local_vp; 106 107 if (ksp->ks_ndata == 0) { 108 return; /* no AF_UNIX sockets found */ 109 } 110 111 /* 112 * Having ks_data set with ks_data == NULL shouldn't happen; 113 * If it does, the sockfs kstat is seriously broken. 114 */ 115 if ((psi = ksp->ks_data) == NULL) { 116 fail(0, "print_kn: no kstat data\n"); 117 } 118 119 /* set pas to the address strings which are after the sockinfo */ 120 pas = &((char *)psi)[sizeof (struct sockinfo)]; 121 122 /* Create a string of NALEN "0"'s for NULL addresses. */ 123 if ((nullstr = calloc(1, NALEN)) == NULL) { 124 fail(0, "print_kn: out of memory\n"); 125 } 126 (void) memset((void *)nullstr, '0', NALEN); 127 128 (void) printf("\nActive UNIX domain sockets\n"); 129 (void) printf("%-8.8s %-10.10s %8.8s %8.8s " 130 "Local Addr Remote Addr\n", 131 "Address", "Type", "Vnode", "Conn"); 132 133 /* for each sockinfo structure, display what we need: */ 134 for (i = 0; i < ksp->ks_ndata; i++) { 135 /* display sonode's address. 1st string after sockinfo: */ 136 pas = &(((char *)psi)[sizeof (struct sockinfo)]); 137 (void) printf("%s ", pas); 138 139 (void) printf("%-10.10s ", typetoname(psi->si_serv_type)); 140 141 /* laddr.sou_vp: 2nd string after sockinfo: */ 142 pas = nextstr(pas); 143 144 local_vp = conn_vp = nullstr; 145 146 if ((psi->si_state & SS_ISBOUND) && 147 (psi->si_ux_laddr_sou_magic == SOU_MAGIC_EXPLICIT)) { 148 local_vp = pas; 149 } 150 151 /* faddr.sou_vp: 3rd string after sockinfo: */ 152 pas = nextstr(pas); 153 if ((psi->si_state & SS_ISCONNECTED) && 154 (psi->si_ux_faddr_sou_magic == SOU_MAGIC_EXPLICIT)) { 155 conn_vp = pas; 156 } 157 158 (void) printf("%s %s ", local_vp, conn_vp); 159 160 /* laddr.soa_sa: */ 161 if ((psi->si_state & SS_ISBOUND) && 162 strlen(psi->si_laddr_sun_path) != 0 && 163 psi->si_laddr_soa_len != 0) { 164 if (psi->si_faddr_noxlate) { 165 (void) printf(" (socketpair) "); 166 } else { 167 if (psi->si_laddr_soa_len > 168 sizeof (psi->si_laddr_family)) 169 (void) printf("%s ", 170 psi->si_laddr_sun_path); 171 else 172 (void) printf(" "); 173 } 174 } else 175 (void) printf(" "); 176 177 /* faddr.soa_sa: */ 178 if ((psi->si_state & SS_ISCONNECTED) && 179 strlen(psi->si_faddr_sun_path) != 0 && 180 psi->si_faddr_soa_len != 0) { 181 182 if (psi->si_faddr_noxlate) { 183 (void) printf(" (socketpair) "); 184 } else { 185 if (psi->si_faddr_soa_len > 186 sizeof (psi->si_faddr_family)) 187 (void) printf("%s ", 188 psi->si_faddr_sun_path); 189 else 190 (void) printf(" "); 191 } 192 } else 193 (void) printf(" "); 194 195 (void) printf("\n"); 196 197 /* if si_size didn't get filled in, then we're done */ 198 if (psi->si_size == 0 || 199 !IS_P2ALIGNED(psi->si_size, sizeof (psi))) { 200 break; 201 } 202 203 /* LINTED: (note 1) */ 204 psi = (struct sockinfo *)&(((char *)psi)[psi->si_size]); 205 } 206 } 207 208 static char * 209 typetoname(t_scalar_t type) 210 { 211 switch (type) { 212 case T_CLTS: 213 return ("dgram"); 214 215 case T_COTS: 216 return ("stream"); 217 218 case T_COTS_ORD: 219 return ("stream-ord"); 220 221 default: 222 return (""); 223 } 224 } 225 226 /* 227 * nextstr(): find the beginning of a next string. 228 * The sockfs kstat left-justifies each address string, leaving 229 * null's between the strings. Since we don't necessarily know 230 * the sizes of pointers in the kernel, we need to skip over these 231 * nulls in order to get to the start of the next string. 232 */ 233 static char * 234 nextstr(char *pas) 235 { 236 char *next; 237 238 for (next = &pas[strlen(pas) + 1]; *next == NULL; ) { 239 next++; 240 } 241 242 return (next); 243 } 244