prosody
ac951c44751c
util-src/pposix.c

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util-src/pposix.c @ 730:ac951c44751c

pposix: Remove debug line
author Matthew Wild <mwild1@gmail.com>
date Fri, 16 Jan 2009 05:22:28 +0000
parent 729:f62ef65d5c01
child 766:433a5226267f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Prosody IM v0.1
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 Waqas Hussain
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4 --
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5 -- This program is free software; you can redistribute it and/or
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6 -- modify it under the terms of the GNU General Public License
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7 -- as published by the Free Software Foundation; either version 2
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8 -- of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18 */
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19
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20 /* pposix.c
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21 POSIX support functions for Lua
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22 */
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23
727
78c9542de94e pposix: Add _NAME and _VERSION
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24 #define MODULE_VERSION "0.3.0"
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25
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26 #include <stdlib.h>
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27 #include <unistd.h>
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28 #include <libgen.h>
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29 #include <sys/types.h>
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30 #include <sys/stat.h>
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31 #include <fcntl.h>
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32
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33 #include <syslog.h>
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34
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35 #include <string.h>
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36
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37 #include "lua.h"
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38 #include "lauxlib.h"
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39
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40 /* Daemonization support */
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41
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42 static int lc_daemonize(lua_State *L)
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43 {
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44
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45 pid_t pid;
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46
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47 if ( getppid() == 1 )
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48 {
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49 lua_pushboolean(L, 0);
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50 lua_pushstring(L, "already-daemonized");
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51 return 2;
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52 }
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53
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54 /* Attempt initial fork */
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55 if((pid = fork()) < 0)
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56 {
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57 /* Forking failed */
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58 lua_pushboolean(L, 0);
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59 lua_pushstring(L, "fork-failed");
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60 return 2;
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61 }
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62 else if(pid != 0)
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63 {
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64 /* We are the parent process */
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65 lua_pushboolean(L, 1);
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66 lua_pushnumber(L, pid);
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67 return 2;
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68 }
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69
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70 /* and we are the child process */
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71 if(setsid() == -1)
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72 {
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73 /* We failed to become session leader */
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74 /* (we probably already were) */
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75 lua_pushboolean(L, 0);
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76 lua_pushstring(L, "setsid-failed");
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77 return 2;
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78 }
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79
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80 /* Close stdin, stdout, stderr */
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81 /* close(0);
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82 close(1);
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83 close(2);
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84 */
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85 /* Final fork, use it wisely */
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86 if(fork())
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87 exit(0);
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88
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89 /* Show's over, let's continue */
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90 lua_pushboolean(L, 1);
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91 lua_pushnil(L);
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92 return 2;
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93 }
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94
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95 /* Syslog support */
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96
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97 char *facility_strings[] = { "auth",
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98 "authpriv",
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99 "cron",
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100 "daemon",
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101 "ftp",
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102 "kern",
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103 "local0",
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104 "local1",
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105 "local2",
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106 "local3",
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107 "local4",
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108 "local5",
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109 "local6",
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110 "local7",
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111 "lpr",
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112 "mail",
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113 "syslog",
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114 "user",
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115 "uucp",
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116 NULL
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117 };
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118 int facility_constants[] = {
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119 LOG_AUTH,
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120 LOG_AUTHPRIV,
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121 LOG_CRON,
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122 LOG_DAEMON,
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123 LOG_FTP,
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124 LOG_KERN,
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125 LOG_LOCAL0,
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126 LOG_LOCAL1,
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127 LOG_LOCAL2,
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128 LOG_LOCAL3,
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129 LOG_LOCAL4,
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130 LOG_LOCAL5,
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131 LOG_LOCAL6,
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132 LOG_LOCAL7,
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133 LOG_LPR,
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134 LOG_MAIL,
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135 LOG_NEWS,
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136 LOG_SYSLOG,
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137 LOG_USER,
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138 LOG_UUCP,
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139 -1
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140 };
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141
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142 /* "
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143 The parameter ident in the call of openlog() is probably stored as-is.
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144 Thus, if the string it points to is changed, syslog() may start
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145 prepending the changed string, and if the string it points to ceases to
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146 exist, the results are undefined. Most portable is to use a string
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147 constant.
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148 " -- syslog manpage
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149 */
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150 char* syslog_ident = NULL;
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151
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152 int lc_syslog_open(lua_State* L)
722
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153 {
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154 int facility = luaL_checkoption(L, 2, "daemon", &facility_strings);
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155 facility = facility_constants[facility];
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156
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157 luaL_checkstring(L, 1);
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158
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159 if(syslog_ident)
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160 free(syslog_ident);
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161
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162 syslog_ident = strdup(lua_tostring(L, 1));
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163
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164 openlog(syslog_ident, LOG_PID, facility);
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165 return 0;
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166 }
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167
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168 char *level_strings[] = {
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169 "debug",
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170 "info",
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171 "notice",
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172 "warn",
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173 "error",
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174 NULL
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175 };
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176 int level_constants[] = {
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177 LOG_DEBUG,
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178 LOG_INFO,
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179 LOG_NOTICE,
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180 LOG_WARNING,
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181 LOG_EMERG,
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182 -1
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183 };
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184 int lc_syslog_log(lua_State* L)
722
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185 {
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186 int level = luaL_checkoption(L, 1, "notice", &level_strings);
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187 level = level_constants[level];
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188
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189 luaL_checkstring(L, 2);
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190
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191 syslog(level, "%s", lua_tostring(L, 2));
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192 return 0;
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193 }
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194
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195 int lc_syslog_close(lua_State* L)
722
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196 {
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197 closelog();
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198 if(syslog_ident)
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199 {
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200 free(syslog_ident);
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201 syslog_ident = NULL;
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202 }
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203 return 0;
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204 }
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205
729
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206 int lc_syslog_setmask(lua_State* L)
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207 {
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208 int level_idx = luaL_checkoption(L, 1, "notice", &level_strings);
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209 int mask = 0;
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210 do
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211 {
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212 mask |= LOG_MASK(level_constants[level_idx]);
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213 } while (++level_idx<=4);
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214
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215 setlogmask(mask);
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216 return 0;
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217 }
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218
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219 /* getpid */
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220
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221 int lc_getpid(lua_State* L)
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222 {
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223 lua_pushinteger(L, getpid());
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224 return 1;
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225 }
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226
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227 /* Register functions */
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228
586
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229 int luaopen_util_pposix(lua_State *L)
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230 {
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231 lua_newtable(L);
722
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232
723
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233 lua_pushcfunction(L, lc_daemonize);
586
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234 lua_setfield(L, -2, "daemonize");
722
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235
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236 lua_pushcfunction(L, lc_syslog_open);
722
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237 lua_setfield(L, -2, "syslog_open");
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238
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239 lua_pushcfunction(L, lc_syslog_close);
722
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240 lua_setfield(L, -2, "syslog_close");
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241
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242 lua_pushcfunction(L, lc_syslog_log);
722
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243 lua_setfield(L, -2, "syslog_log");
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244
729
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245 lua_pushcfunction(L, lc_syslog_setmask);
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246 lua_setfield(L, -2, "syslog_setminlevel");
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247
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248 lua_pushcfunction(L, lc_getpid);
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249 lua_setfield(L, -2, "getpid");
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250
727
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251 lua_pushliteral(L, "pposix");
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252 lua_setfield(L, -2, "_NAME");
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253
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254 lua_pushliteral(L, MODULE_VERSION);
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255 lua_setfield(L, -2, "_VERSION");
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parents: 723
diff changeset
256
586
b828d7d47973 Add posix support library, and adjust makefiles for it
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
257 return 1;
b828d7d47973 Add posix support library, and adjust makefiles for it
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
258 };