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util-src/pposix.c @ 9686:e52e4e6e7ffb
moduleapi: Use pack from util.table
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 08 Dec 2018 16:35:00 +0100 |
parent | 9681:861d510e1876 |
child | 10411:db2a06b9ff98 |
rev | line source |
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1 /* Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 Waqas Hussain |
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4 -- Copyright (C) 2009 Tobias Markmann |
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5 -- |
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6 -- This project is MIT/X11 licensed. Please see the |
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7 -- COPYING file in the source package for more information. |
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8 -- |
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9 */ |
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10 |
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11 /* |
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12 * pposix.c |
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13 * POSIX support functions for Lua |
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14 */ |
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15 |
8012 | 16 #define MODULE_VERSION "0.4.0" |
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17 |
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18 |
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19 #if defined(__linux__) |
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20 #ifndef _GNU_SOURCE |
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21 #define _GNU_SOURCE |
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22 #endif |
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23 #else |
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24 #ifndef _DEFAULT_SOURCE |
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25 #define _DEFAULT_SOURCE |
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26 #endif |
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27 #endif |
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28 |
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29 #if defined(__APPLE__) |
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30 #ifndef _DARWIN_C_SOURCE |
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31 #define _DARWIN_C_SOURCE |
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32 #endif |
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33 #endif |
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34 |
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35 #if ! defined(__FreeBSD__) |
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36 #ifndef _POSIX_C_SOURCE |
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37 #define _POSIX_C_SOURCE 200809L |
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38 #endif |
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39 #endif |
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40 |
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41 #include <stdlib.h> |
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42 #include <math.h> |
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43 #include <unistd.h> |
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44 #include <libgen.h> |
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46 #include <sys/types.h> |
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47 #include <sys/stat.h> |
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48 #include <sys/utsname.h> |
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49 #include <fcntl.h> |
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50 |
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51 #include <syslog.h> |
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52 #include <pwd.h> |
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53 #include <grp.h> |
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54 |
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55 #include <string.h> |
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56 #include <errno.h> |
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57 #include "lua.h" |
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58 #include "lualib.h" |
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59 #include "lauxlib.h" |
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60 |
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61 #if (LUA_VERSION_NUM == 501) |
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62 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R) |
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63 #endif |
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64 |
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65 #include <fcntl.h> |
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66 #if defined(__linux__) |
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67 #include <linux/falloc.h> |
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68 #endif |
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69 |
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70 #if !defined(WITHOUT_MALLINFO) && defined(__linux__) && defined(__GLIBC__) |
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71 #include <malloc.h> |
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72 #define WITH_MALLINFO |
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73 #endif |
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74 |
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75 #if defined(__FreeBSD__) && defined(RFPROC) |
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76 /* |
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77 * On FreeBSD, calling fork() is equivalent to rfork(RFPROC | RFFDG). |
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78 * |
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79 * RFFDG being set means that the file descriptor table is copied, |
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80 * otherwise it's shared. We want the later, otherwise libevent gets |
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81 * messed up. |
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82 * |
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83 * See issue #412 |
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84 */ |
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85 #define fork() rfork(RFPROC) |
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86 #endif |
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87 |
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88 /* Daemonization support */ |
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89 |
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90 static int lc_daemonize(lua_State *L) { |
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91 |
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92 pid_t pid; |
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93 |
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94 if(getppid() == 1) { |
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95 lua_pushboolean(L, 0); |
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96 lua_pushstring(L, "already-daemonized"); |
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97 return 2; |
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98 } |
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99 |
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100 /* Attempt initial fork */ |
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101 if((pid = fork()) < 0) { |
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102 /* Forking failed */ |
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103 lua_pushboolean(L, 0); |
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104 lua_pushstring(L, "fork-failed"); |
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105 return 2; |
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106 } else if(pid != 0) { |
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107 /* We are the parent process */ |
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108 lua_pushboolean(L, 1); |
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109 lua_pushnumber(L, pid); |
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110 return 2; |
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111 } |
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112 |
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113 /* and we are the child process */ |
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114 if(setsid() == -1) { |
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115 /* We failed to become session leader */ |
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116 /* (we probably already were) */ |
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117 lua_pushboolean(L, 0); |
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118 lua_pushstring(L, "setsid-failed"); |
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119 return 2; |
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120 } |
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121 |
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122 /* Make sure accidental use of FDs 0, 1, 2 don't cause weirdness */ |
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123 freopen("/dev/null", "r", stdin); |
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124 freopen("/dev/null", "w", stdout); |
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125 freopen("/dev/null", "w", stderr); |
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126 |
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127 /* Final fork, use it wisely */ |
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128 if(fork()) { |
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129 exit(0); |
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130 } |
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131 |
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132 /* Show's over, let's continue */ |
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133 lua_pushboolean(L, 1); |
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134 lua_pushnil(L); |
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135 return 2; |
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136 } |
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137 |
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138 /* Syslog support */ |
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139 |
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140 const char *const facility_strings[] = { |
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141 "auth", |
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142 #if !(defined(sun) || defined(__sun)) |
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143 "authpriv", |
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144 #endif |
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145 "cron", |
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146 "daemon", |
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147 #if !(defined(sun) || defined(__sun)) |
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148 "ftp", |
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149 #endif |
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150 "kern", |
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151 "local0", |
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152 "local1", |
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153 "local2", |
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154 "local3", |
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155 "local4", |
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156 "local5", |
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157 "local6", |
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158 "local7", |
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159 "lpr", |
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160 "mail", |
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161 "syslog", |
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162 "user", |
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163 "uucp", |
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164 NULL |
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165 }; |
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166 int facility_constants[] = { |
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167 LOG_AUTH, |
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168 #if !(defined(sun) || defined(__sun)) |
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169 LOG_AUTHPRIV, |
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170 #endif |
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171 LOG_CRON, |
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172 LOG_DAEMON, |
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173 #if !(defined(sun) || defined(__sun)) |
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174 LOG_FTP, |
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175 #endif |
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176 LOG_KERN, |
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177 LOG_LOCAL0, |
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178 LOG_LOCAL1, |
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179 LOG_LOCAL2, |
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180 LOG_LOCAL3, |
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181 LOG_LOCAL4, |
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182 LOG_LOCAL5, |
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183 LOG_LOCAL6, |
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184 LOG_LOCAL7, |
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185 LOG_LPR, |
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186 LOG_MAIL, |
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187 LOG_NEWS, |
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188 LOG_SYSLOG, |
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189 LOG_USER, |
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190 LOG_UUCP, |
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191 -1 |
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192 }; |
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193 |
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194 /* " |
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195 The parameter ident in the call of openlog() is probably stored as-is. |
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196 Thus, if the string it points to is changed, syslog() may start |
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197 prepending the changed string, and if the string it points to ceases to |
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198 exist, the results are undefined. Most portable is to use a string |
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199 constant. |
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200 " -- syslog manpage |
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201 */ |
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202 char *syslog_ident = NULL; |
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203 |
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204 int lc_syslog_open(lua_State *L) { |
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205 int facility = luaL_checkoption(L, 2, "daemon", facility_strings); |
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206 facility = facility_constants[facility]; |
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207 |
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208 luaL_checkstring(L, 1); |
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209 |
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210 if(syslog_ident) { |
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211 free(syslog_ident); |
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212 } |
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213 |
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214 syslog_ident = strdup(lua_tostring(L, 1)); |
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215 |
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216 openlog(syslog_ident, LOG_PID, facility); |
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217 return 0; |
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218 } |
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219 |
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220 const char *const level_strings[] = { |
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221 "debug", |
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222 "info", |
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223 "notice", |
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224 "warn", |
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225 "error", |
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226 NULL |
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227 }; |
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228 int level_constants[] = { |
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229 LOG_DEBUG, |
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230 LOG_INFO, |
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231 LOG_NOTICE, |
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232 LOG_WARNING, |
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233 LOG_CRIT, |
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234 -1 |
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235 }; |
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236 int lc_syslog_log(lua_State *L) { |
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237 int level = level_constants[luaL_checkoption(L, 1, "notice", level_strings)]; |
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238 |
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239 if(lua_gettop(L) == 3) { |
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240 syslog(level, "%s: %s", luaL_checkstring(L, 2), luaL_checkstring(L, 3)); |
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241 } else { |
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242 syslog(level, "%s", lua_tostring(L, 2)); |
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243 } |
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244 |
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245 return 0; |
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246 } |
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247 |
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248 int lc_syslog_close(lua_State *L) { |
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249 (void)L; |
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250 closelog(); |
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251 |
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252 if(syslog_ident) { |
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253 free(syslog_ident); |
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254 syslog_ident = NULL; |
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255 } |
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256 |
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257 return 0; |
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258 } |
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259 |
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260 int lc_syslog_setmask(lua_State *L) { |
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261 int level_idx = luaL_checkoption(L, 1, "notice", level_strings); |
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262 int mask = 0; |
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263 |
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264 do { |
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265 mask |= LOG_MASK(level_constants[level_idx]); |
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266 } while(++level_idx <= 4); |
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267 |
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268 setlogmask(mask); |
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269 return 0; |
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270 } |
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271 |
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272 /* getpid */ |
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273 |
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274 int lc_getpid(lua_State *L) { |
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275 lua_pushinteger(L, getpid()); |
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276 return 1; |
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277 } |
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278 |
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279 /* UID/GID functions */ |
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280 |
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281 int lc_getuid(lua_State *L) { |
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282 lua_pushinteger(L, getuid()); |
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283 return 1; |
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284 } |
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285 |
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286 int lc_getgid(lua_State *L) { |
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287 lua_pushinteger(L, getgid()); |
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288 return 1; |
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289 } |
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290 |
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291 int lc_setuid(lua_State *L) { |
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292 int uid = -1; |
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293 |
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294 if(lua_gettop(L) < 1) { |
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295 return 0; |
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296 } |
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297 |
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298 if(!lua_isnumber(L, 1) && lua_tostring(L, 1)) { |
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299 /* Passed UID is actually a string, so look up the UID */ |
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300 struct passwd *p; |
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301 p = getpwnam(lua_tostring(L, 1)); |
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302 |
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303 if(!p) { |
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304 lua_pushboolean(L, 0); |
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305 lua_pushstring(L, "no-such-user"); |
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306 return 2; |
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307 } |
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308 |
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309 uid = p->pw_uid; |
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310 } else { |
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311 uid = lua_tonumber(L, 1); |
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312 } |
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313 |
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314 if(uid > -1) { |
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315 /* Ok, attempt setuid */ |
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316 errno = 0; |
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317 |
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318 if(setuid(uid)) { |
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319 /* Fail */ |
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320 lua_pushboolean(L, 0); |
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321 |
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322 switch(errno) { |
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323 case EINVAL: |
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324 lua_pushstring(L, "invalid-uid"); |
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325 break; |
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326 |
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327 case EPERM: |
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328 lua_pushstring(L, "permission-denied"); |
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329 break; |
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330 |
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331 default: |
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332 lua_pushstring(L, "unknown-error"); |
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333 } |
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334 |
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335 return 2; |
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336 } else { |
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337 /* Success! */ |
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338 lua_pushboolean(L, 1); |
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339 return 1; |
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340 } |
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341 } |
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342 |
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343 /* Seems we couldn't find a valid UID to switch to */ |
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344 lua_pushboolean(L, 0); |
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345 lua_pushstring(L, "invalid-uid"); |
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346 return 2; |
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347 } |
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348 |
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349 int lc_setgid(lua_State *L) { |
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350 int gid = -1; |
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351 |
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352 if(lua_gettop(L) < 1) { |
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353 return 0; |
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354 } |
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355 |
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356 if(!lua_isnumber(L, 1) && lua_tostring(L, 1)) { |
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357 /* Passed GID is actually a string, so look up the GID */ |
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358 struct group *g; |
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359 g = getgrnam(lua_tostring(L, 1)); |
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360 |
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361 if(!g) { |
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362 lua_pushboolean(L, 0); |
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363 lua_pushstring(L, "no-such-group"); |
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364 return 2; |
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365 } |
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366 |
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367 gid = g->gr_gid; |
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368 } else { |
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369 gid = lua_tonumber(L, 1); |
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370 } |
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371 |
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372 if(gid > -1) { |
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373 /* Ok, attempt setgid */ |
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374 errno = 0; |
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375 |
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376 if(setgid(gid)) { |
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377 /* Fail */ |
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378 lua_pushboolean(L, 0); |
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379 |
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380 switch(errno) { |
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381 case EINVAL: |
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382 lua_pushstring(L, "invalid-gid"); |
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383 break; |
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384 |
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385 case EPERM: |
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386 lua_pushstring(L, "permission-denied"); |
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387 break; |
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388 |
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389 default: |
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390 lua_pushstring(L, "unknown-error"); |
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391 } |
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392 |
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393 return 2; |
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394 } else { |
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395 /* Success! */ |
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396 lua_pushboolean(L, 1); |
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397 return 1; |
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398 } |
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399 } |
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400 |
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401 /* Seems we couldn't find a valid GID to switch to */ |
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402 lua_pushboolean(L, 0); |
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403 lua_pushstring(L, "invalid-gid"); |
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404 return 2; |
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405 } |
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406 |
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407 int lc_initgroups(lua_State *L) { |
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408 int ret; |
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409 gid_t gid; |
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410 struct passwd *p; |
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411 |
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412 if(!lua_isstring(L, 1)) { |
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413 lua_pushnil(L); |
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414 lua_pushstring(L, "invalid-username"); |
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415 return 2; |
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416 } |
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417 |
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418 p = getpwnam(lua_tostring(L, 1)); |
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419 |
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420 if(!p) { |
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421 lua_pushnil(L); |
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422 lua_pushstring(L, "no-such-user"); |
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423 return 2; |
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424 } |
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425 |
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426 if(lua_gettop(L) < 2) { |
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427 lua_pushnil(L); |
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428 } |
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429 |
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430 switch(lua_type(L, 2)) { |
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431 case LUA_TNIL: |
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432 gid = p->pw_gid; |
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433 break; |
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434 |
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435 case LUA_TNUMBER: |
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436 gid = lua_tointeger(L, 2); |
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437 break; |
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438 |
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439 default: |
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440 lua_pushnil(L); |
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441 lua_pushstring(L, "invalid-gid"); |
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442 return 2; |
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443 } |
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444 |
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445 ret = initgroups(lua_tostring(L, 1), gid); |
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446 |
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447 if(ret) { |
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448 switch(errno) { |
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449 case ENOMEM: |
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450 lua_pushnil(L); |
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451 lua_pushstring(L, "no-memory"); |
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452 break; |
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453 |
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454 case EPERM: |
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455 lua_pushnil(L); |
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456 lua_pushstring(L, "permission-denied"); |
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457 break; |
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458 |
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459 default: |
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460 lua_pushnil(L); |
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461 lua_pushstring(L, "unknown-error"); |
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462 } |
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463 } else { |
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464 lua_pushboolean(L, 1); |
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465 lua_pushnil(L); |
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466 } |
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467 |
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468 return 2; |
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469 } |
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470 |
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471 int lc_umask(lua_State *L) { |
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472 char old_mode_string[7]; |
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473 mode_t old_mode = umask(strtoul(luaL_checkstring(L, 1), NULL, 8)); |
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474 |
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475 snprintf(old_mode_string, sizeof(old_mode_string), "%03o", old_mode); |
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476 old_mode_string[sizeof(old_mode_string) - 1] = 0; |
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|
477 lua_pushstring(L, old_mode_string); |
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478 |
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479 return 1; |
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480 } |
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481 |
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482 int lc_mkdir(lua_State *L) { |
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483 int ret = mkdir(luaL_checkstring(L, 1), S_IRUSR | S_IWUSR | S_IXUSR |
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484 | S_IRGRP | S_IWGRP | S_IXGRP |
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485 | S_IROTH | S_IXOTH); /* mode 775 */ |
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486 |
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487 lua_pushboolean(L, ret == 0); |
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488 |
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489 if(ret) { |
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490 lua_pushstring(L, strerror(errno)); |
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491 return 2; |
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492 } |
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493 |
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494 return 1; |
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495 } |
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496 |
859 | 497 /* Like POSIX's setrlimit()/getrlimit() API functions. |
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498 * |
859 | 499 * Syntax: |
500 * pposix.setrlimit( resource, soft limit, hard limit) | |
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501 * |
859 | 502 * Any negative limit will be replace with the current limit by an additional call of getrlimit(). |
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503 * |
859 | 504 * Example usage: |
505 * pposix.setrlimit("NOFILE", 1000, 2000) | |
506 */ | |
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507 int string2resource(const char *s) { |
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508 if(!strcmp(s, "CORE")) { |
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509 return RLIMIT_CORE; |
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510 } |
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511 |
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512 if(!strcmp(s, "CPU")) { |
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513 return RLIMIT_CPU; |
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514 } |
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515 |
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516 if(!strcmp(s, "DATA")) { |
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517 return RLIMIT_DATA; |
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518 } |
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519 |
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520 if(!strcmp(s, "FSIZE")) { |
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521 return RLIMIT_FSIZE; |
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522 } |
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523 |
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524 if(!strcmp(s, "NOFILE")) { |
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525 return RLIMIT_NOFILE; |
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526 } |
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527 |
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528 if(!strcmp(s, "STACK")) { |
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529 return RLIMIT_STACK; |
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530 } |
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parents:
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|
531 |
9278
8f9e18d4fe50
util.pposix: Fix building on OS X (#1202)
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
532 #if !(defined(sun) || defined(__sun) || defined(__APPLE__)) |
6615
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parents:
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|
533 |
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|
534 if(!strcmp(s, "MEMLOCK")) { |
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|
535 return RLIMIT_MEMLOCK; |
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|
536 } |
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Kim Alvefur <zash@zash.se>
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|
537 |
8e4572a642cb
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parents:
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538 if(!strcmp(s, "NPROC")) { |
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parents:
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|
539 return RLIMIT_NPROC; |
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|
540 } |
8e4572a642cb
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parents:
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|
541 |
8e4572a642cb
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parents:
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diff
changeset
|
542 if(!strcmp(s, "RSS")) { |
8e4572a642cb
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parents:
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|
543 return RLIMIT_RSS; |
8e4572a642cb
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|
544 } |
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
545 |
1842
8337c0d4aee4
util.pposix: Compatibility with Solaris systems (thanks Filip)
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
546 #endif |
5359
43517e649c53
util.pposix: Allow fetching RLIMIT_NICE when available
Matthew Wild <mwild1@gmail.com>
parents:
5176
diff
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|
547 #ifdef RLIMIT_NICE |
6615
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548 |
8e4572a642cb
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549 if(!strcmp(s, "NICE")) { |
8e4572a642cb
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550 return RLIMIT_NICE; |
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551 } |
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552 |
5359
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parents:
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|
553 #endif |
859 | 554 return -1; |
555 } | |
556 | |
7966
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util.pposix: Use correct type for limits [-Wconstant-conversion]
Kim Alvefur <zash@zash.se>
parents:
7965
diff
changeset
|
557 rlim_t arg_to_rlimit(lua_State *L, int idx, rlim_t current) { |
5719
84025249fc04
util.pposix: Correctly handle 'unlimited' limits (RLIM_INFINITY), by returning and accepting the string 'unlimited' in get/setrlimit()
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|
558 switch(lua_type(L, idx)) { |
6615
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559 case LUA_TSTRING: |
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560 |
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561 if(strcmp(lua_tostring(L, idx), "unlimited") == 0) { |
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562 return RLIM_INFINITY; |
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parents:
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|
563 } |
9152
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
9151
diff
changeset
|
564 return luaL_argerror(L, idx, "unexpected type"); |
6615
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565 |
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566 case LUA_TNUMBER: |
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|
567 return lua_tointeger(L, idx); |
7889
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568 |
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|
569 case LUA_TNONE: |
8e4572a642cb
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570 case LUA_TNIL: |
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|
571 return current; |
7889
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572 |
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573 default: |
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574 return luaL_argerror(L, idx, "unexpected type"); |
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575 } |
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576 } |
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577 |
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578 int lc_setrlimit(lua_State *L) { |
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579 struct rlimit lim; |
859 | 580 int arguments = lua_gettop(L); |
581 int rid = -1; | |
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582 |
859 | 583 if(arguments < 1 || arguments > 3) { |
584 lua_pushboolean(L, 0); | |
865
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585 lua_pushstring(L, "incorrect-arguments"); |
5717
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586 return 2; |
859 | 587 } |
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588 |
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589 rid = string2resource(luaL_checkstring(L, 1)); |
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590 |
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591 if(rid == -1) { |
859 | 592 lua_pushboolean(L, 0); |
865
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593 lua_pushstring(L, "invalid-resource"); |
859 | 594 return 2; |
595 } | |
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596 |
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597 /* Fetch current values to use as defaults */ |
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598 if(getrlimit(rid, &lim)) { |
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599 lua_pushboolean(L, 0); |
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600 lua_pushstring(L, "getrlimit-failed"); |
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601 return 2; |
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602 } |
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603 |
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604 lim.rlim_cur = arg_to_rlimit(L, 2, lim.rlim_cur); |
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605 lim.rlim_max = arg_to_rlimit(L, 3, lim.rlim_max); |
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606 |
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607 if(setrlimit(rid, &lim)) { |
859 | 608 lua_pushboolean(L, 0); |
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609 lua_pushstring(L, "setrlimit-failed"); |
859 | 610 return 2; |
611 } | |
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612 |
859 | 613 lua_pushboolean(L, 1); |
614 return 1; | |
615 } | |
616 | |
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617 int lc_getrlimit(lua_State *L) { |
860 | 618 int arguments = lua_gettop(L); |
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619 const char *resource = NULL; |
860 | 620 int rid = -1; |
861
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621 struct rlimit lim; |
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622 |
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623 if(arguments != 1) { |
860 | 624 lua_pushboolean(L, 0); |
865
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625 lua_pushstring(L, "invalid-arguments"); |
860 | 626 return 2; |
627 } | |
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628 |
860 | 629 resource = luaL_checkstring(L, 1); |
630 rid = string2resource(resource); | |
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631 |
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632 if(rid != -1) { |
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633 if(getrlimit(rid, &lim)) { |
860 | 634 lua_pushboolean(L, 0); |
865
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635 lua_pushstring(L, "getrlimit-failed."); |
860 | 636 return 2; |
637 } | |
638 } else { | |
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639 /* Unsupported resource. Sorry I'm pretty limited by POSIX standard. */ |
860 | 640 lua_pushboolean(L, 0); |
865
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641 lua_pushstring(L, "invalid-resource"); |
860 | 642 return 2; |
643 } | |
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644 |
860 | 645 lua_pushboolean(L, 1); |
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646 |
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647 if(lim.rlim_cur == RLIM_INFINITY) { |
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648 lua_pushstring(L, "unlimited"); |
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649 } else { |
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|
650 lua_pushnumber(L, lim.rlim_cur); |
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651 } |
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652 |
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653 if(lim.rlim_max == RLIM_INFINITY) { |
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|
654 lua_pushstring(L, "unlimited"); |
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655 } else { |
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|
656 lua_pushnumber(L, lim.rlim_max); |
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657 } |
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658 |
860 | 659 return 3; |
859 | 660 } |
661 | |
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|
662 int lc_abort(lua_State *L) { |
9151
fee3933ff346
pposix, signal: Ignore unused arguments.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
9150
diff
changeset
|
663 (void)L; |
2060
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Matthew Wild <mwild1@gmail.com>
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|
664 abort(); |
2830
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Matthew Wild <mwild1@gmail.com>
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|
665 return 0; |
2060
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Matthew Wild <mwild1@gmail.com>
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|
666 } |
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667 |
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668 int lc_uname(lua_State *L) { |
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|
669 struct utsname uname_info; |
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670 |
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671 if(uname(&uname_info) != 0) { |
3482
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|
672 lua_pushnil(L); |
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673 lua_pushstring(L, strerror(errno)); |
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674 return 2; |
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|
675 } |
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676 |
7969
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Kim Alvefur <zash@zash.se>
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7966
diff
changeset
|
677 lua_createtable(L, 0, 6); |
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|
678 lua_pushstring(L, uname_info.sysname); |
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|
679 lua_setfield(L, -2, "sysname"); |
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680 lua_pushstring(L, uname_info.nodename); |
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|
681 lua_setfield(L, -2, "nodename"); |
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|
682 lua_pushstring(L, uname_info.release); |
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683 lua_setfield(L, -2, "release"); |
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684 lua_pushstring(L, uname_info.version); |
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685 lua_setfield(L, -2, "version"); |
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686 lua_pushstring(L, uname_info.machine); |
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687 lua_setfield(L, -2, "machine"); |
7931
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diff
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|
688 #ifdef __USE_GNU |
6942
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Kim Alvefur <zash@zash.se>
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|
689 lua_pushstring(L, uname_info.domainname); |
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|
690 lua_setfield(L, -2, "domainname"); |
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|
691 #endif |
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|
692 return 1; |
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|
693 } |
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694 |
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695 int lc_setenv(lua_State *L) { |
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696 const char *var = luaL_checkstring(L, 1); |
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697 const char *value; |
4934 | 698 |
699 /* If the second argument is nil or nothing, unset the var */ | |
6615
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700 if(lua_isnoneornil(L, 2)) { |
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701 if(unsetenv(var) != 0) { |
4934 | 702 lua_pushnil(L); |
703 lua_pushstring(L, strerror(errno)); | |
704 return 2; | |
705 } | |
6615
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706 |
4934 | 707 lua_pushboolean(L, 1); |
708 return 1; | |
709 } | |
710 | |
711 value = luaL_checkstring(L, 2); | |
712 | |
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713 if(setenv(var, value, 1) != 0) { |
4934 | 714 lua_pushnil(L); |
715 lua_pushstring(L, strerror(errno)); | |
716 return 2; | |
717 } | |
718 | |
719 lua_pushboolean(L, 1); | |
720 return 1; | |
721 } | |
722 | |
4946
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|
723 #ifdef WITH_MALLINFO |
7889
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724 int lc_meminfo(lua_State *L) { |
4946
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|
725 struct mallinfo info = mallinfo(); |
7969
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util-src: Specify size of various tables to be allocated
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|
726 lua_createtable(L, 0, 5); |
4950
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727 /* This is the total size of memory allocated with sbrk by malloc, in bytes. */ |
4946
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|
728 lua_pushinteger(L, info.arena); |
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729 lua_setfield(L, -2, "allocated"); |
4950
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730 /* This is the total size of memory allocated with mmap, in bytes. */ |
4946
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731 lua_pushinteger(L, info.hblkhd); |
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732 lua_setfield(L, -2, "allocated_mmap"); |
4950
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733 /* This is the total size of memory occupied by chunks handed out by malloc. */ |
4946
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734 lua_pushinteger(L, info.uordblks); |
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735 lua_setfield(L, -2, "used"); |
4950
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736 /* This is the total size of memory occupied by free (not in use) chunks. */ |
4946
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737 lua_pushinteger(L, info.fordblks); |
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738 lua_setfield(L, -2, "unused"); |
4950
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739 /* This is the size of the top-most releasable chunk that normally borders the |
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740 end of the heap (i.e., the high end of the virtual address space's data segment). */ |
4946
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741 lua_pushinteger(L, info.keepcost); |
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742 lua_setfield(L, -2, "returnable"); |
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743 return 1; |
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744 } |
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745 #endif |
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746 |
8010
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747 /* |
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748 * Append some data to a file handle |
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749 * Attempt to allocate space first |
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750 * Truncate to original size on failure |
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751 */ |
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752 int lc_atomic_append(lua_State *L) { |
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753 int err; |
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754 size_t len; |
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755 |
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756 FILE *f = *(FILE **) luaL_checkudata(L, 1, LUA_FILEHANDLE); |
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757 const char *data = luaL_checklstring(L, 2, &len); |
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758 |
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759 off_t offset = ftell(f); |
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760 |
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761 #if defined(__linux__) |
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762 /* Try to allocate space without changing the file size. */ |
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763 if((err = fallocate(fileno(f), FALLOC_FL_KEEP_SIZE, offset, len))) { |
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764 if(errno != 0) { |
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765 /* Some old versions of Linux apparently use the return value instead of errno */ |
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766 err = errno; |
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767 } |
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768 switch(err) { |
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769 case ENOSYS: /* Kernel doesn't implement fallocate */ |
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770 case EOPNOTSUPP: /* Filesystem doesn't support it */ |
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771 /* Ignore and proceed to try to write */ |
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772 break; |
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773 |
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774 case ENOSPC: /* No space left */ |
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775 default: /* Other issues */ |
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776 lua_pushnil(L); |
49feb0da29e1
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777 lua_pushstring(L, strerror(err)); |
49feb0da29e1
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778 lua_pushinteger(L, err); |
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779 return 3; |
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780 } |
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781 } |
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782 #endif |
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783 |
49feb0da29e1
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784 if(fwrite(data, sizeof(char), len, f) == len) { |
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785 if(fflush(f) == 0) { |
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786 lua_pushboolean(L, 1); /* Great success! */ |
49feb0da29e1
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787 return 1; |
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788 } else { |
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789 err = errno; |
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790 } |
49feb0da29e1
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791 } else { |
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792 err = ferror(f); |
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793 } |
49feb0da29e1
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|
794 |
49feb0da29e1
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|
795 fseek(f, offset, SEEK_SET); |
49feb0da29e1
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|
796 |
49feb0da29e1
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|
797 /* Cut partially written data */ |
49feb0da29e1
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798 if(ftruncate(fileno(f), offset)) { |
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799 /* The file is now most likely corrupted, throw hard error */ |
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800 return luaL_error(L, "atomic_append() failed in ftruncate(): %s", strerror(errno)); |
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801 } |
49feb0da29e1
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|
802 |
49feb0da29e1
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|
803 lua_pushnil(L); |
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|
804 lua_pushstring(L, strerror(err)); |
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|
805 lua_pushinteger(L, err); |
49feb0da29e1
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|
806 return 3; |
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|
807 } |
49feb0da29e1
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|
808 |
723
c1e7d280c174
mod_posix/pposix: Fix reporting of incorrect PID on daemonization. Log correct PID, and support writing a pidfile (pidfile = '/path/to/prosody.pid' in config). Added getpid() to pposix and improved function names.
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|
809 /* Register functions */ |
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722
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|
810 |
7889
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|
811 int luaopen_util_pposix(lua_State *L) { |
7818
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|
812 #if (LUA_VERSION_NUM > 501) |
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|
813 luaL_checkversion(L); |
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|
814 #endif |
2441
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|
815 luaL_Reg exports[] = { |
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diff
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|
816 { "abort", lc_abort }, |
722
63456c9d0522
mod_posix: Support for logging to syslog (log = 'syslog' in config)
Matthew Wild <mwild1@gmail.com>
parents:
588
diff
changeset
|
817 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
818 { "daemonize", lc_daemonize }, |
722
63456c9d0522
mod_posix: Support for logging to syslog (log = 'syslog' in config)
Matthew Wild <mwild1@gmail.com>
parents:
588
diff
changeset
|
819 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
820 { "syslog_open", lc_syslog_open }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
821 { "syslog_close", lc_syslog_close }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
822 { "syslog_log", lc_syslog_log }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
823 { "syslog_setminlevel", lc_syslog_setmask }, |
722
63456c9d0522
mod_posix: Support for logging to syslog (log = 'syslog' in config)
Matthew Wild <mwild1@gmail.com>
parents:
588
diff
changeset
|
824 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
825 { "getpid", lc_getpid }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
826 { "getuid", lc_getuid }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
827 { "getgid", lc_getgid }, |
722
63456c9d0522
mod_posix: Support for logging to syslog (log = 'syslog' in config)
Matthew Wild <mwild1@gmail.com>
parents:
588
diff
changeset
|
828 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
829 { "setuid", lc_setuid }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
830 { "setgid", lc_setgid }, |
3471
482275e38224
util.pposix, prosodyctl, mod_posix: Add initgroups() function, and bump module version. prosodyctl inits groups with the groups of prosody_user. (thanks dbb)
Matthew Wild <mwild1@gmail.com>
parents:
2925
diff
changeset
|
831 { "initgroups", lc_initgroups }, |
729
f62ef65d5c01
pposix: Add syslog_setmask (use config: minimum_log_level = 'warn' etc.)
Matthew Wild <mwild1@gmail.com>
parents:
727
diff
changeset
|
832 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
833 { "umask", lc_umask }, |
723
c1e7d280c174
mod_posix/pposix: Fix reporting of incorrect PID on daemonization. Log correct PID, and support writing a pidfile (pidfile = '/path/to/prosody.pid' in config). Added getpid() to pposix and improved function names.
Matthew Wild <mwild1@gmail.com>
parents:
722
diff
changeset
|
834 |
2443
b335ae55af77
util.pposix: Add mkdir(path)
Matthew Wild <mwild1@gmail.com>
parents:
2441
diff
changeset
|
835 { "mkdir", lc_mkdir }, |
804
9bc1544c99b7
util.pposix: Add getuid/setuid (we don't use them yet)
Matthew Wild <mwild1@gmail.com>
parents:
796
diff
changeset
|
836 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
837 { "setrlimit", lc_setrlimit }, |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
838 { "getrlimit", lc_getrlimit }, |
2436
ccc71b5d2e01
util.posix: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2060
diff
changeset
|
839 |
3481
72d3c8029178
util.pposix: Add pposix.uname(), bump version
Matthew Wild <mwild1@gmail.com>
parents:
3471
diff
changeset
|
840 { "uname", lc_uname }, |
72d3c8029178
util.pposix: Add pposix.uname(), bump version
Matthew Wild <mwild1@gmail.com>
parents:
3471
diff
changeset
|
841 |
4934 | 842 { "setenv", lc_setenv }, |
843 | |
4946
2975c7008ccd
util.pposix: Add meminfo() binding to memory allocation stats provided by mallinfo() [compilation tested on Ubuntu...]
Matthew Wild <mwild1@gmail.com>
parents:
4934
diff
changeset
|
844 #ifdef WITH_MALLINFO |
2975c7008ccd
util.pposix: Add meminfo() binding to memory allocation stats provided by mallinfo() [compilation tested on Ubuntu...]
Matthew Wild <mwild1@gmail.com>
parents:
4934
diff
changeset
|
845 { "meminfo", lc_meminfo }, |
2975c7008ccd
util.pposix: Add meminfo() binding to memory allocation stats provided by mallinfo() [compilation tested on Ubuntu...]
Matthew Wild <mwild1@gmail.com>
parents:
4934
diff
changeset
|
846 #endif |
2975c7008ccd
util.pposix: Add meminfo() binding to memory allocation stats provided by mallinfo() [compilation tested on Ubuntu...]
Matthew Wild <mwild1@gmail.com>
parents:
4934
diff
changeset
|
847 |
8010
49feb0da29e1
util.pposix: Add function for atomically appending data to a file
Kim Alvefur <zash@zash.se>
parents:
7969
diff
changeset
|
848 { "atomic_append", lc_atomic_append }, |
5044
4ef0dbfead53
util.pposix: Add fallocate method, backed by either posix_fallocate() or Linux fallocate()
Kim Alvefur <zash@zash.se>
parents:
4950
diff
changeset
|
849 |
2441
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
850 { NULL, NULL } |
d72078946a16
util.pposix: Replace the unwieldy module table generation with luaL_register() call - side effect - it now sets the pposix global to the module table
Matthew Wild <mwild1@gmail.com>
parents:
2438
diff
changeset
|
851 }; |
2438
819ba949c7bc
util.pposix: Add pposix.umask(), bump version to 0.3.2 (and do the same in mod_posix)
Matthew Wild <mwild1@gmail.com>
parents:
2437
diff
changeset
|
852 |
6411
6c8f6364bc48
util-src/*.c: Don't create globals when loaded
Kim Alvefur <zash@zash.se>
parents:
6156
diff
changeset
|
853 lua_newtable(L); |
6789
6b180e77c97a
util-src/*.c: Invert Lua 5.2 compat to be 5.2+ by default and a macro to support 5.1
Kim Alvefur <zash@zash.se>
parents:
6642
diff
changeset
|
854 luaL_setfuncs(L, exports, 0); |
804
9bc1544c99b7
util.pposix: Add getuid/setuid (we don't use them yet)
Matthew Wild <mwild1@gmail.com>
parents:
796
diff
changeset
|
855 |
7926
b009c27818c6
util.pposix: Expose ENOENT constant (usually 2, but you never know)
Kim Alvefur <zash@zash.se>
parents:
7919
diff
changeset
|
856 #ifdef ENOENT |
b009c27818c6
util.pposix: Expose ENOENT constant (usually 2, but you never know)
Kim Alvefur <zash@zash.se>
parents:
7919
diff
changeset
|
857 lua_pushinteger(L, ENOENT); |
b009c27818c6
util.pposix: Expose ENOENT constant (usually 2, but you never know)
Kim Alvefur <zash@zash.se>
parents:
7919
diff
changeset
|
858 lua_setfield(L, -2, "ENOENT"); |
b009c27818c6
util.pposix: Expose ENOENT constant (usually 2, but you never know)
Kim Alvefur <zash@zash.se>
parents:
7919
diff
changeset
|
859 #endif |
b009c27818c6
util.pposix: Expose ENOENT constant (usually 2, but you never know)
Kim Alvefur <zash@zash.se>
parents:
7919
diff
changeset
|
860 |
727
78c9542de94e
pposix: Add _NAME and _VERSION
Matthew Wild <mwild1@gmail.com>
parents:
723
diff
changeset
|
861 lua_pushliteral(L, "pposix"); |
78c9542de94e
pposix: Add _NAME and _VERSION
Matthew Wild <mwild1@gmail.com>
parents:
723
diff
changeset
|
862 lua_setfield(L, -2, "_NAME"); |
78c9542de94e
pposix: Add _NAME and _VERSION
Matthew Wild <mwild1@gmail.com>
parents:
723
diff
changeset
|
863 |
78c9542de94e
pposix: Add _NAME and _VERSION
Matthew Wild <mwild1@gmail.com>
parents:
723
diff
changeset
|
864 lua_pushliteral(L, MODULE_VERSION); |
78c9542de94e
pposix: Add _NAME and _VERSION
Matthew Wild <mwild1@gmail.com>
parents:
723
diff
changeset
|
865 lua_setfield(L, -2, "_VERSION"); |
2436
ccc71b5d2e01
util.posix: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2060
diff
changeset
|
866 |
586
b828d7d47973
Add posix support library, and adjust makefiles for it
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
867 return 1; |
3966
e71c19dac1c7
util.pposix: Remove extraneous semicolon
Matthew Wild <mwild1@gmail.com>
parents:
3482
diff
changeset
|
868 } |