Mercurial > masqmail

annotate src/log.c @ 421:f37384470855

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Changed lockdir to /var/lock/masqmail; Create lockdir and piddir on startup. Moved the lockdir out of the spool dir. (When /var/lock is a ramdisk we do well to have the lock files there.) Added the new configure option --with-lockdir to change that location. Nontheless, if we run_as_user, then lock files are always stored in the spool dir directly. Instead of installing the lockdir and piddir at installation time, we create them on startup time now if they are missing. This is necessary if lockdir or piddir are a tmpfs.
author markus schnalke <meillo@marmaro.de>
date Wed, 30 May 2012 09:38:38 +0200
parents 5f0829f8e6c7
children 19be3b27df6f
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1 /*
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2 ** MasqMail
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3 ** Copyright (C) 1999-2001 Oliver Kurth
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4 **
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5 ** This program is free software; you can redistribute it and/or modify
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6 ** it under the terms of the GNU General Public License as published by
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7 ** the Free Software Foundation; either version 2 of the License, or
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8 ** (at your option) any later version.
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9 **
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10 ** This program is distributed in the hope that it will be useful,
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11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 ** GNU General Public License for more details.
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14 **
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15 ** You should have received a copy of the GNU General Public License
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16 ** along with this program; if not, write to the Free Software
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17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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18 */
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19
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20 #include <sys/stat.h>
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21 #include <sysexits.h>
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23 #include "masqmail.h"
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24
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25 static char *_sysexit_strings[] = {
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26 "command line usage error",
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27 "data format error",
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28 "cannot open input",
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29 "addressee unknown",
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30 "host name unknown",
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31 "service unavailable",
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32 "internal software error",
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33 "system error (e.g., can't fork)",
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34 "critical OS file missing",
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35 "can't create (user) output file",
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36 "input/output error",
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37 "temp failure; user is invited to retry",
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38 "remote error in protocol",
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39 "permission denied",
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40 "configuration error"
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41 };
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42
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43 gchar*
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44 ext_strerror(int err)
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45 {
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46 if (err < 1024)
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47 return strerror(err);
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48 else if (err > 1024 + EX__BASE
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49 && (err - 1024 - EX__BASE < sizeof(_sysexit_strings) / sizeof(_sysexit_strings[0])))
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50 return _sysexit_strings[err - 1024 - EX__BASE];
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52 return "unknown error";
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53 }
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54
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55 static FILE *logfile = NULL;
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56 static FILE *debugfile = NULL;
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57
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58 gboolean
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59 logopen()
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60 {
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61 gchar *filename;
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62 mode_t saved_mode = umask(066);
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63
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64 if (conf.use_syslog) {
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65 openlog(PACKAGE, LOG_PID, LOG_MAIL);
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66 } else {
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67 uid_t saved_uid;
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68 gid_t saved_gid;
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70 if (!conf.run_as_user) {
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71 set_euidgid(conf.mail_uid, conf.mail_gid, &saved_uid, &saved_gid);
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72 }
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73
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74 filename = g_strdup_printf("%s/masqmail.log", conf.log_dir);
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75 logfile = fopen(filename, "a");
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76 if (!logfile) {
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77 fprintf(stderr, "could not open log '%s': %s\n", filename, strerror(errno));
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78 return FALSE;
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79 }
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80 g_free(filename);
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82 if (!conf.run_as_user) {
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83 set_euidgid(saved_uid, saved_gid, NULL, NULL);
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84 }
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85 }
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86
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87 #ifdef ENABLE_DEBUG
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88 if (conf.debug_level > 0) {
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89 filename = g_strdup_printf("%s/debug.log", conf.log_dir);
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90 debugfile = fopen(filename, "a");
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91 if (!debugfile) {
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92 fprintf(stderr, "could not open debug log '%s'\n", filename);
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93 return FALSE;
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94 }
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95 g_free(filename);
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96 }
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97 #endif
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98 umask(saved_mode);
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99 return TRUE;
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100 }
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101
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102 void
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103 logclose()
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104 {
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105 if (conf.use_syslog)
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106 closelog();
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107 else if (logfile)
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108 fclose(logfile);
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109 if (debugfile)
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110 fclose(debugfile);
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111 }
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112
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113 void
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114 vlogwrite(int pri, const char *fmt, va_list args)
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115 {
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116 if ((conf.do_verbose && (pri & LOG_VERBOSE)) || (pri == LOG_ALERT) || (pri == LOG_WARNING)) {
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117 va_list args_copy;
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118 va_copy(args_copy, args);
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119 vfprintf(stdout, fmt, args_copy);
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120 va_end(args_copy);
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121 fflush(stdout); /* in case output ends not with newline */
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122 }
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123
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124 pri &= ~LOG_VERBOSE;
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125 if (!pri) {
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126 return;
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127 }
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128 if (conf.use_syslog) {
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129 vsyslog(pri, fmt, args);
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130 return;
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131 }
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132 FILE *file = logfile ? logfile : stderr;
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133 time_t now = time(NULL);
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134 struct tm *t = localtime(&now);
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135 gchar buf[24];
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136
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137 strftime(buf, 24, "%Y-%m-%d %H:%M:%S", t);
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138 fprintf(file, "%s [%d] ", buf, getpid());
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139
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140 vfprintf(file, fmt, args);
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141 fflush(file);
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142 }
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143
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144 #ifdef ENABLE_DEBUG
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145 void
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146 vdebugwrite(int pri, const char *fmt, va_list args)
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147 {
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148 time_t now = time(NULL);
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149 struct tm *t = localtime(&now);
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150 gchar buf[24];
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151 strftime(buf, 24, "%Y-%m-%d %H:%M:%S", t);
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152
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153 if (debugfile) {
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154 fprintf(debugfile, "%s [%d] ", buf, getpid());
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155 vfprintf(debugfile, fmt, args);
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156 fflush(debugfile);
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157 } else {
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158 fprintf(stderr, "no debug file, msg was:\n");
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159 vfprintf(stderr, fmt, args);
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160 }
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161 }
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162 #endif
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163
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164 void
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165 logwrite(int pri, const char *fmt, ...)
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166 {
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167 va_list args, args_copy;
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168 int saved_errno = errno; /* somewhere this is changed to EBADF */
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169
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170 va_start(args, fmt);
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171 #ifdef ENABLE_DEBUG
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172 va_copy(args_copy, args);
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173 #endif
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174 vlogwrite(pri, fmt, args);
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175 #ifdef ENABLE_DEBUG
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176 if (debugfile)
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177 vdebugwrite(pri, fmt, args_copy);
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178 va_end(args_copy);
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179 #endif
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180 va_end(args);
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181
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182 errno = saved_errno;
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183 }
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184
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185 #ifdef ENABLE_DEBUG
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186 void
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187 debugf(const char *fmt, ...)
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188 {
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189 va_list args;
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190 va_start(args, fmt);
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191
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192 vdebugwrite(LOG_DEBUG, fmt, args);
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193
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194 va_end(args);
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195 }
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196
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197 void
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198 vdebugf(const char *fmt, va_list args)
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199 {
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200 vdebugwrite(LOG_DEBUG, fmt, args);
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201 }
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202 #endif
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203
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204 void
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205 maillog(const char *fmt, ...)
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206 {
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207 va_list args;
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208 va_start(args, fmt);
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209
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210 vlogwrite(LOG_NOTICE, fmt, args);
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211
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212 va_end(args);
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213 }