log.c revision 267654
1/* 2 * Copyright (C) 2004-2007, 2009, 2013 Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (C) 1999-2002 Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15 * PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18/* $Id: log.c,v 1.49 2009/01/07 01:46:40 jinmei Exp $ */ 19 20/*! \file */ 21 22#include <config.h> 23 24#include <isc/result.h> 25 26#include <isccfg/log.h> 27 28#include <named/log.h> 29 30#ifndef ISC_FACILITY 31#define ISC_FACILITY LOG_DAEMON 32#endif 33 34/*% 35 * When adding a new category, be sure to add the appropriate 36 * \#define to <named/log.h> and to update the list in 37 * bin/check/check-tool.c. 38 */ 39static isc_logcategory_t categories[] = { 40 { "", 0 }, 41 { "client", 0 }, 42 { "network", 0 }, 43 { "update", 0 }, 44 { "queries", 0 }, 45 { "unmatched", 0 }, 46 { "update-security", 0 }, 47 { "query-errors", 0 }, 48 { NULL, 0 } 49}; 50 51/*% 52 * When adding a new module, be sure to add the appropriate 53 * \#define to <dns/log.h>. 54 */ 55static isc_logmodule_t modules[] = { 56 { "main", 0 }, 57 { "client", 0 }, 58 { "server", 0 }, 59 { "query", 0 }, 60 { "interfacemgr", 0 }, 61 { "update", 0 }, 62 { "xfer-in", 0 }, 63 { "xfer-out", 0 }, 64 { "notify", 0 }, 65 { "control", 0 }, 66 { "lwresd", 0 }, 67 { NULL, 0 } 68}; 69 70isc_result_t 71ns_log_init(isc_boolean_t safe) { 72 isc_result_t result; 73 isc_logconfig_t *lcfg = NULL; 74 75 ns_g_categories = categories; 76 ns_g_modules = modules; 77 78 /* 79 * Setup a logging context. 80 */ 81 result = isc_log_create(ns_g_mctx, &ns_g_lctx, &lcfg); 82 if (result != ISC_R_SUCCESS) 83 return (result); 84 85 /* 86 * named-checktool.c:setup_logging() needs to be kept in sync. 87 */ 88 isc_log_registercategories(ns_g_lctx, ns_g_categories); 89 isc_log_registermodules(ns_g_lctx, ns_g_modules); 90 isc_log_setcontext(ns_g_lctx); 91 dns_log_init(ns_g_lctx); 92 dns_log_setcontext(ns_g_lctx); 93 cfg_log_init(ns_g_lctx); 94 95 if (safe) 96 result = ns_log_setsafechannels(lcfg); 97 else 98 result = ns_log_setdefaultchannels(lcfg); 99 if (result != ISC_R_SUCCESS) 100 goto cleanup; 101 102 result = ns_log_setdefaultcategory(lcfg); 103 if (result != ISC_R_SUCCESS) 104 goto cleanup; 105 106 return (ISC_R_SUCCESS); 107 108 cleanup: 109 isc_log_destroy(&ns_g_lctx); 110 isc_log_setcontext(NULL); 111 dns_log_setcontext(NULL); 112 113 return (result); 114} 115 116isc_result_t 117ns_log_setdefaultchannels(isc_logconfig_t *lcfg) { 118 isc_result_t result; 119 isc_logdestination_t destination; 120 121 /* 122 * By default, the logging library makes "default_debug" log to 123 * stderr. In BIND, we want to override this and log to named.run 124 * instead, unless the -g option was given. 125 */ 126 if (! ns_g_logstderr) { 127 destination.file.stream = NULL; 128 destination.file.name = "named.run"; 129 destination.file.versions = ISC_LOG_ROLLNEVER; 130 destination.file.maximum_size = 0; 131 result = isc_log_createchannel(lcfg, "default_debug", 132 ISC_LOG_TOFILE, 133 ISC_LOG_DYNAMIC, 134 &destination, 135 ISC_LOG_PRINTTIME| 136 ISC_LOG_DEBUGONLY); 137 if (result != ISC_R_SUCCESS) 138 goto cleanup; 139 } 140 141#if ISC_FACILITY != LOG_DAEMON 142 destination.facility = ISC_FACILITY; 143 result = isc_log_createchannel(lcfg, "default_syslog", 144 ISC_LOG_TOSYSLOG, ISC_LOG_INFO, 145 &destination, 0); 146 if (result != ISC_R_SUCCESS) 147 goto cleanup; 148#endif 149 150 /* 151 * Set the initial debug level. 152 */ 153 isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel); 154 155 result = ISC_R_SUCCESS; 156 157 cleanup: 158 return (result); 159} 160 161isc_result_t 162ns_log_setsafechannels(isc_logconfig_t *lcfg) { 163 isc_result_t result; 164#if ISC_FACILITY != LOG_DAEMON 165 isc_logdestination_t destination; 166#endif 167 168 if (! ns_g_logstderr) { 169 result = isc_log_createchannel(lcfg, "default_debug", 170 ISC_LOG_TONULL, 171 ISC_LOG_DYNAMIC, 172 NULL, 0); 173 if (result != ISC_R_SUCCESS) 174 goto cleanup; 175 176 /* 177 * Setting the debug level to zero should get the output 178 * discarded a bit faster. 179 */ 180 isc_log_setdebuglevel(ns_g_lctx, 0); 181 } else { 182 isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel); 183 } 184 185#if ISC_FACILITY != LOG_DAEMON 186 destination.facility = ISC_FACILITY; 187 result = isc_log_createchannel(lcfg, "default_syslog", 188 ISC_LOG_TOSYSLOG, ISC_LOG_INFO, 189 &destination, 0); 190 if (result != ISC_R_SUCCESS) 191 goto cleanup; 192#endif 193 194 result = ISC_R_SUCCESS; 195 196 cleanup: 197 return (result); 198} 199 200isc_result_t 201ns_log_setdefaultcategory(isc_logconfig_t *lcfg) { 202 isc_result_t result; 203 204 if (! ns_g_logstderr && ! ns_g_nosyslog) { 205 result = isc_log_usechannel(lcfg, "default_syslog", 206 ISC_LOGCATEGORY_DEFAULT, NULL); 207 if (result != ISC_R_SUCCESS) 208 goto cleanup; 209 } 210 211 result = isc_log_usechannel(lcfg, "default_debug", 212 ISC_LOGCATEGORY_DEFAULT, NULL); 213 if (result != ISC_R_SUCCESS) 214 goto cleanup; 215 216 result = ISC_R_SUCCESS; 217 218 cleanup: 219 return (result); 220} 221 222isc_result_t 223ns_log_setunmatchedcategory(isc_logconfig_t *lcfg) { 224 isc_result_t result; 225 226 result = isc_log_usechannel(lcfg, "null", 227 NS_LOGCATEGORY_UNMATCHED, NULL); 228 return (result); 229} 230 231void 232ns_log_shutdown(void) { 233 isc_log_destroy(&ns_g_lctx); 234 isc_log_setcontext(NULL); 235 dns_log_setcontext(NULL); 236} 237