prosody
99d2100d2918
util-src/signal.c

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util-src/signal.c @ 13703:99d2100d2918 13.0

core.certmanager: Move LuaSec verification tweaks to mod_s2s These two settings are only really needed for XMPP server-to-server connections.
author Kim Alvefur <zash@zash.se>
date Sat, 15 Feb 2025 00:19:01 +0100
parent 13618:3118dc02f908
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1 /*
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2 * signal.c -- Signal Handler Library for Lua
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3 *
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4 * Version: 1.000+changes
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5 *
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6 * Copyright (C) 2007 Patrick J. Donnelly (batrick@batbytes.com)
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7 *
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8 * This software is distributed under the same license as Lua 5.0:
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9 *
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10 * Permission is hereby granted, free of charge, to any person obtaining a
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11 * copy of this software and associated documentation files (the "Software"),
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12 * to deal in the Software without restriction, including without limitation
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13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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14 * and/or sell copies of the Software, and to permit persons to whom the
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15 * Software is furnished to do so, subject to the following conditions:
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16 *
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17 * The above copyright notice and this permission notice shall be included
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18 * in all copies or substantial portions of the Software.
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19 *
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20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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26 * OTHER DEALINGS IN THE SOFTWARE.
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27 */
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28
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29 #ifndef _GNU_SOURCE
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30 #define _GNU_SOURCE
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31 #endif
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32
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33 #ifdef __linux__
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34 #define HAVE_SIGNALFD
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35 #endif
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36
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37 #include <signal.h>
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38 #include <stdlib.h>
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39 #include <unistd.h>
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40 #ifdef HAVE_SIGNALFD
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41 #include <sys/signalfd.h>
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42 #endif
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43
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44 #include "lua.h"
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45 #include "lauxlib.h"
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46
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47 #if (LUA_VERSION_NUM < 503)
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48 #define lua_isinteger(L, n) lua_isnumber(L, n)
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49 #endif
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50
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51 #ifndef lsig
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52
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53 #define lsig
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54
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55 struct lua_signal {
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56 char *name; /* name of the signal */
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57 int sig; /* the signal */
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58 };
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59
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60 #endif
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61
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62 #define MAX_PENDING_SIGNALS 32
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63
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64 #define LUA_SIGNAL "lua_signal"
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65
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66 static const struct lua_signal lua_signals[] = {
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67 /* ANSI C signals */
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68 #ifdef SIGABRT
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69 {"SIGABRT", SIGABRT},
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70 #endif
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71 #ifdef SIGFPE
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72 {"SIGFPE", SIGFPE},
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73 #endif
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74 #ifdef SIGILL
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75 {"SIGILL", SIGILL},
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76 #endif
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77 #ifdef SIGINT
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78 {"SIGINT", SIGINT},
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79 #endif
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80 #ifdef SIGSEGV
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81 {"SIGSEGV", SIGSEGV},
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82 #endif
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83 #ifdef SIGTERM
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84 {"SIGTERM", SIGTERM},
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85 #endif
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86 /* posix signals */
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87 #ifdef SIGHUP
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88 {"SIGHUP", SIGHUP},
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89 #endif
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90 #ifdef SIGQUIT
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91 {"SIGQUIT", SIGQUIT},
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92 #endif
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93 #ifdef SIGTRAP
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94 {"SIGTRAP", SIGTRAP},
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95 #endif
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96 #ifdef SIGKILL
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97 {"SIGKILL", SIGKILL},
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98 #endif
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99 #ifdef SIGUSR1
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100 {"SIGUSR1", SIGUSR1},
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101 #endif
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102 #ifdef SIGUSR2
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103 {"SIGUSR2", SIGUSR2},
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104 #endif
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105 #ifdef SIGPIPE
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106 {"SIGPIPE", SIGPIPE},
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107 #endif
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108 #ifdef SIGALRM
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109 {"SIGALRM", SIGALRM},
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110 #endif
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111 #ifdef SIGCHLD
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112 {"SIGCHLD", SIGCHLD},
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113 #endif
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114 #ifdef SIGCONT
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115 {"SIGCONT", SIGCONT},
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116 #endif
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117 #ifdef SIGSTOP
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118 {"SIGSTOP", SIGSTOP},
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119 #endif
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120 #ifdef SIGTTIN
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121 {"SIGTTIN", SIGTTIN},
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122 #endif
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123 #ifdef SIGTTOU
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124 {"SIGTTOU", SIGTTOU},
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125 #endif
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126 /* some BSD signals */
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127 #ifdef SIGIOT
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128 {"SIGIOT", SIGIOT},
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129 #endif
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130 #ifdef SIGBUS
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131 {"SIGBUS", SIGBUS},
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132 #endif
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133 #ifdef SIGCLD
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134 {"SIGCLD", SIGCLD},
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135 #endif
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136 #ifdef SIGURG
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137 {"SIGURG", SIGURG},
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138 #endif
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139 #ifdef SIGXCPU
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140 {"SIGXCPU", SIGXCPU},
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141 #endif
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142 #ifdef SIGXFSZ
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143 {"SIGXFSZ", SIGXFSZ},
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144 #endif
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145 #ifdef SIGVTALRM
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146 {"SIGVTALRM", SIGVTALRM},
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147 #endif
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148 #ifdef SIGPROF
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149 {"SIGPROF", SIGPROF},
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150 #endif
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151 #ifdef SIGWINCH
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152 {"SIGWINCH", SIGWINCH},
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153 #endif
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154 #ifdef SIGPOLL
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155 {"SIGPOLL", SIGPOLL},
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156 #endif
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157 #ifdef SIGIO
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158 {"SIGIO", SIGIO},
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159 #endif
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160 /* add odd signals */
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161 #ifdef SIGSTKFLT
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162 {"SIGSTKFLT", SIGSTKFLT}, /* stack fault */
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163 #endif
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164 #ifdef SIGSYS
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165 {"SIGSYS", SIGSYS},
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166 #endif
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167 {NULL, 0}
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168 };
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169
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170 static lua_State *Lsig = NULL;
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171 static lua_Hook Hsig = NULL;
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172 static int Hmask = 0;
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173 static int Hcount = 0;
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174
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175 static int signals[MAX_PENDING_SIGNALS];
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176 static int nsig = 0;
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177
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178 static void sighook(lua_State *L, lua_Debug *ar) {
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179 (void)ar;
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180 /* restore the old hook */
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181 lua_sethook(L, Hsig, Hmask, Hcount);
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182
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183 lua_pushstring(L, LUA_SIGNAL);
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184 lua_gettable(L, LUA_REGISTRYINDEX);
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185
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186 for(int i = 0; i < nsig; i++) {
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187 lua_pushinteger(L, signals[i]);
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188 lua_gettable(L, -2);
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189 lua_call(L, 0, 0);
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190 };
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191
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192 nsig = 0;
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193
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194 lua_pop(L, 1); /* pop lua_signal table */
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195
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196 }
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197
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198 static void handle(int sig) {
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199 if(nsig == 0) {
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200 /* Store the existing debug hook (if any) and its parameters */
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201 Hsig = lua_gethook(Lsig);
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202 Hmask = lua_gethookmask(Lsig);
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203 Hcount = lua_gethookcount(Lsig);
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204
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205 /* Set our new debug hook */
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206 lua_sethook(Lsig, sighook, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
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207 }
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208
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209 if(nsig < MAX_PENDING_SIGNALS) {
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210 signals[nsig++] = sig;
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211 }
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212 }
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213
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214 /*
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215 * l_signal == signal(signal [, func [, chook]])
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216 *
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217 * signal = signal number or string
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218 * func = Lua function to call
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219 * chook = catch within C functions
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220 * if caught, Lua function _must_
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221 * exit, as the stack is most likely
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222 * in an unstable state.
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223 */
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224
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225 static int l_signal(lua_State *L) {
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226 int args = lua_gettop(L);
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227 int t, sig; /* type, signal */
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228
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229 /* get type of signal */
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230 luaL_checkany(L, 1);
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231 t = lua_type(L, 1);
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232
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233 if(t == LUA_TNUMBER) {
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234 sig = (int) lua_tointeger(L, 1);
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235 } else if(t == LUA_TSTRING) {
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236 lua_pushstring(L, LUA_SIGNAL);
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237 lua_gettable(L, LUA_REGISTRYINDEX);
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238 lua_pushvalue(L, 1);
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239 lua_gettable(L, -2);
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240
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241 if(!lua_isinteger(L, -1)) {
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242 return luaL_error(L, "invalid signal string");
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243 }
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244
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245 sig = (int) lua_tointeger(L, -1);
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246 lua_pop(L, 1); /* get rid of number we pushed */
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247 } else {
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248 luaL_checknumber(L, 1); /* will always error, with good error msg */
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249 return luaL_error(L, "unreachable: invalid number was accepted");
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250 }
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251
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252 /* set handler */
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253 if(args == 1 || lua_isnil(L, 2)) { /* clear handler */
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254 lua_pushstring(L, LUA_SIGNAL);
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255 lua_gettable(L, LUA_REGISTRYINDEX);
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256 lua_pushinteger(L, sig);
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257 lua_gettable(L, -2); /* return old handler */
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258 lua_pushinteger(L, sig);
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259 lua_pushnil(L);
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260 lua_settable(L, -4);
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261 lua_remove(L, -2); /* remove LUA_SIGNAL table */
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262 signal(sig, SIG_DFL);
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263 } else {
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264 luaL_checktype(L, 2, LUA_TFUNCTION);
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265
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266 lua_pushstring(L, LUA_SIGNAL);
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267 lua_gettable(L, LUA_REGISTRYINDEX);
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268
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269 lua_pushinteger(L, sig);
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270 lua_pushvalue(L, 2);
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271 lua_settable(L, -3);
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272
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273 /* Set the state for the handler */
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274 Lsig = L;
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275
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276 if(lua_toboolean(L, 3)) { /* c hook? */
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277 if(signal(sig, handle) == SIG_ERR) {
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278 lua_pushboolean(L, 0);
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279 } else {
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280 lua_pushboolean(L, 1);
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281 }
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282 } else { /* lua_hook */
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283 if(signal(sig, handle) == SIG_ERR) {
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284 lua_pushboolean(L, 0);
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285 } else {
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286 lua_pushboolean(L, 1);
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287 }
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288 }
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289 }
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290
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291 return 1;
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292 }
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293
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294 /*
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295 * l_raise == raise(signal)
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296 *
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297 * signal = signal number or string
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298 */
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299
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300 static int l_raise(lua_State *L) {
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301 /* int args = lua_gettop(L); */
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302 int t = 0; /* type */
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303 lua_Integer ret;
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304
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305 luaL_checkany(L, 1);
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306
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307 t = lua_type(L, 1);
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308
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309 if(t == LUA_TNUMBER) {
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310 ret = (lua_Integer) raise((int) lua_tointeger(L, 1));
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311 lua_pushinteger(L, ret);
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312 } else if(t == LUA_TSTRING) {
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313 lua_pushstring(L, LUA_SIGNAL);
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314 lua_gettable(L, LUA_REGISTRYINDEX);
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315 lua_pushvalue(L, 1);
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316 lua_gettable(L, -2);
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317
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318 if(!lua_isnumber(L, -1)) {
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parents: 6615
diff changeset
319 return luaL_error(L, "invalid signal string");
6615
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parents: 6413
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320 }
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
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parents: 6413
diff changeset
321
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parents: 10480
diff changeset
322 ret = (lua_Integer) raise((int) lua_tointeger(L, -1));
6615
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parents: 6413
diff changeset
323 lua_pop(L, 1); /* get rid of number we pushed */
10799
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Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
324 lua_pushinteger(L, ret);
6615
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parents: 6413
diff changeset
325 } else {
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
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parents: 6413
diff changeset
326 luaL_checknumber(L, 1); /* will always error, with good error msg */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
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parents: 6413
diff changeset
327 }
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
328
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
329 return 1;
988
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
330 }
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
331
3282
8ef3beed0779 util.signal: Make kill() available on OS X (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 3274
diff changeset
332 #if defined(__unix__) || defined(__APPLE__)
988
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parents:
diff changeset
333
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
334 /* define some posix only functions */
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
335
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
336 /*
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
337 * l_kill == kill(pid, signal)
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
338 *
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
339 * pid = process id
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
340 * signal = signal number or string
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parents: 6413
diff changeset
341 */
988
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
342
7889
b8d694646597 util-src/*.c: Attach pointer * to name instead of type
Kim Alvefur <zash@zash.se>
parents: 7818
diff changeset
343 static int l_kill(lua_State *L) {
6615
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parents: 6413
diff changeset
344 int t; /* type */
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Kim Alvefur <zash@zash.se>
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diff changeset
345 lua_Integer ret; /* return value */
988
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
346
6615
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parents: 6413
diff changeset
347 luaL_checknumber(L, 1); /* must be int for pid */
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Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
348 luaL_checkany(L, 2); /* check for a second arg */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
349
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
350 t = lua_type(L, 2);
988
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
351
6615
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Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
352 if(t == LUA_TNUMBER) {
10799
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Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
353 ret = (lua_Integer) kill((int) lua_tointeger(L, 1),
763bb2ce3f60 util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3]
Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
354 (int) lua_tointeger(L, 2));
763bb2ce3f60 util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3]
Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
355 lua_pushinteger(L, ret);
6615
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Kim Alvefur <zash@zash.se>
parents: 6413
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356 } else if(t == LUA_TSTRING) {
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
357 lua_pushstring(L, LUA_SIGNAL);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
358 lua_gettable(L, LUA_REGISTRYINDEX);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
359 lua_pushvalue(L, 2);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
360 lua_gettable(L, -2);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
361
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
362 if(!lua_isnumber(L, -1)) {
6620
50eaefeec013 util-src/*.c: Per convention call luaL_error() as argument to return
Florian Zeitz <florob@babelmonkeys.de>
parents: 6615
diff changeset
363 return luaL_error(L, "invalid signal string");
6615
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Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
364 }
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
365
10799
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Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
366 ret = (lua_Integer) kill((int) lua_tointeger(L, 1),
763bb2ce3f60 util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3]
Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
367 (int) lua_tointeger(L, -1));
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
368 lua_pop(L, 1); /* get rid of number we pushed */
10799
763bb2ce3f60 util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3]
Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
369 lua_pushinteger(L, ret);
6615
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Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
370 } else {
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
371 luaL_checknumber(L, 2); /* will always error, with good error msg */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
372 }
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
373
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
374 return 1;
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
375 }
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
376
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
377 #endif
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
378
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
379 struct lsignalfd {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
380 int fd;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
381 sigset_t mask;
13618
3118dc02f908 util.signal: Factor out single #define that enables signalfd(2) use
Kim Alvefur <zash@zash.se>
parents: 13617
diff changeset
382 #ifndef HAVE_SIGNALFD
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
383 int write_fd;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
384 #endif
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
385 };
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
386
13618
3118dc02f908 util.signal: Factor out single #define that enables signalfd(2) use
Kim Alvefur <zash@zash.se>
parents: 13617
diff changeset
387 #ifndef HAVE_SIGNALFD
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
388 #define MAX_SIGNALFD 32
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
389 struct lsignalfd signalfds[MAX_SIGNALFD];
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
390 static int signalfd_num = 0;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
391 static void signal2fd(int sig) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
392 for(int i = 0; i < signalfd_num; i++) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
393 if(sigismember(&signalfds[i].mask, sig)) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
394 write(signalfds[i].write_fd, &sig, sizeof(sig));
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
395 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
396 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
397 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
398 #endif
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
399
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
400 static int l_signalfd(lua_State *L) {
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
401 struct lsignalfd *sfd = lua_newuserdata(L, sizeof(struct lsignalfd));
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
402 int sig = luaL_checkinteger(L, 1);
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
403
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
404 sigemptyset(&sfd->mask);
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
405 sigaddset(&sfd->mask, sig);
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
406
13618
3118dc02f908 util.signal: Factor out single #define that enables signalfd(2) use
Kim Alvefur <zash@zash.se>
parents: 13617
diff changeset
407 #ifdef HAVE_SIGNALFD
13448
93b4ce0115f0 util.signal: Fail signalfd() if unable to change signal mask
Kim Alvefur <zash@zash.se>
parents: 13441
diff changeset
408 if (sigprocmask(SIG_BLOCK, &sfd->mask, NULL) != 0) {
93b4ce0115f0 util.signal: Fail signalfd() if unable to change signal mask
Kim Alvefur <zash@zash.se>
parents: 13441
diff changeset
409 lua_pushnil(L);
93b4ce0115f0 util.signal: Fail signalfd() if unable to change signal mask
Kim Alvefur <zash@zash.se>
parents: 13441
diff changeset
410 return 1;
93b4ce0115f0 util.signal: Fail signalfd() if unable to change signal mask
Kim Alvefur <zash@zash.se>
parents: 13441
diff changeset
411 };
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
412
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
413 sfd->fd = signalfd(-1, &sfd->mask, SFD_NONBLOCK);
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
414
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
415 if(sfd->fd == -1) {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
416 lua_pushnil(L);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
417 return 1;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
418 }
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
419
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
420 #else
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
421
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
422 if(signalfd_num >= MAX_SIGNALFD) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
423 lua_pushnil(L);
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
424 return 1;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
425 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
426
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
427 if(signal(sig, signal2fd) == SIG_ERR) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
428 lua_pushnil(L);
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
429 return 1;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
430 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
431
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
432 int pipefd[2];
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
433
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
434 if(pipe(pipefd) == -1) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
435 lua_pushnil(L);
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
436 return 1;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
437 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
438
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
439 sfd->fd = pipefd[0];
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
440 sfd->write_fd = pipefd[1];
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
441 signalfds[signalfd_num++] = *sfd;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
442 #endif
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
443
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
444 luaL_setmetatable(L, "signalfd");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
445 return 1;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
446 }
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
447
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
448 static int l_signalfd_getfd(lua_State *L) {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
449 struct lsignalfd *sfd = luaL_checkudata(L, 1, "signalfd");
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
450
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
451 if (sfd->fd == -1) {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
452 lua_pushnil(L);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
453 return 1;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
454 }
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
455
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
456 lua_pushinteger(L, sfd->fd);
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
457 return 1;
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
458 }
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
459
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
460 static int l_signalfd_read(lua_State *L) {
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
461 struct lsignalfd *sfd = luaL_checkudata(L, 1, "signalfd");
13618
3118dc02f908 util.signal: Factor out single #define that enables signalfd(2) use
Kim Alvefur <zash@zash.se>
parents: 13617
diff changeset
462 #ifdef HAVE_SIGNALFD
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
463 struct signalfd_siginfo siginfo;
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
464
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
465 if(read(sfd->fd, &siginfo, sizeof(siginfo)) < 0) {
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
466 return 0;
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
467 }
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
468
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
469
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
470 lua_pushinteger(L, siginfo.ssi_signo);
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
471 return 1;
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
472
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
473 #else
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
474 int signo;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
475
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
476 if(read(sfd->fd, &signo, sizeof(int)) < 0) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
477 return 0;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
478 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
479
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
480 lua_pushinteger(L, signo);
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
481 return 1;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
482 #endif
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
483
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
484 }
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
485
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
486 static int l_signalfd_close(lua_State *L) {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
487 struct lsignalfd *sfd = luaL_checkudata(L, 1, "signalfd");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
488
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
489 if(close(sfd->fd) != 0) {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
490 lua_pushboolean(L, 0);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
491 return 1;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
492 }
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
493
13618
3118dc02f908 util.signal: Factor out single #define that enables signalfd(2) use
Kim Alvefur <zash@zash.se>
parents: 13617
diff changeset
494 #ifndef HAVE_SIGNALFD
13617
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
495
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
496 if(close(sfd->write_fd) != 0) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
497 lua_pushboolean(L, 0);
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
498 return 1;
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
499 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
500
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
501 for(int i = signalfd_num; i > 0; i--) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
502 if(signalfds[i].fd == sfd->fd) {
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
503 signalfds[i] = signalfds[signalfd_num--];
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
504 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
505 }
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
506
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
507 #endif
7722a3aa2ff5 util.signal: Implement signalfd for *BSD
Kim Alvefur <zash@zash.se>
parents: 13448
diff changeset
508
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
509 sfd->fd = -1;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
510 lua_pushboolean(L, 1);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
511 return 1;
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
512 }
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
513
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
514 static const struct luaL_Reg lsignal_lib[] = {
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
515 {"signal", l_signal},
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
516 {"raise", l_raise},
3282
8ef3beed0779 util.signal: Make kill() available on OS X (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 3274
diff changeset
517 #if defined(__unix__) || defined(__APPLE__)
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
518 {"kill", l_kill},
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
519 #endif
13439
1e229d710a3c util.signal: Add support for signalfd(2) on Linux
Kim Alvefur <zash@zash.se>
parents: 12976
diff changeset
520 {"signalfd", l_signalfd},
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
521 {NULL, NULL}
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
522 };
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
523
12976
a187600ec7d6 util: Add compat for prosody module name change to C sources
Kim Alvefur <zash@zash.se>
parents: 12575
diff changeset
524 int luaopen_prosody_util_signal(lua_State *L) {
7818
54669df178c2 util-src: Make C modules assert that the Lua runtime matches what it was compiled for
Kim Alvefur <zash@zash.se>
parents: 6789
diff changeset
525 luaL_checkversion(L);
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
526 int i = 0;
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
527
13441
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
528 luaL_newmetatable(L, "signalfd");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
529 lua_pushcfunction(L, l_signalfd_close);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
530 lua_setfield(L, -2, "__gc");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
531 lua_createtable(L, 0, 1);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
532 {
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
533 lua_pushcfunction(L, l_signalfd_getfd);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
534 lua_setfield(L, -2, "getfd");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
535 lua_pushcfunction(L, l_signalfd_read);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
536 lua_setfield(L, -2, "read");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
537 lua_pushcfunction(L, l_signalfd_close);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
538 lua_setfield(L, -2, "close");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
539 }
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
540 lua_setfield(L, -2, "__index");
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
541 lua_pop(L, 1);
6d96b6eeee5a util.signal: Wrap signalfd in an userdatum for gc handling etc
Kim Alvefur <zash@zash.se>
parents: 13439
diff changeset
542
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
543 /* add the library */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
544 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: 6620
diff changeset
545 luaL_setfuncs(L, lsignal_lib, 0);
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
546
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
547 /* push lua_signals table into the registry */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
548 /* put the signals inside the library table too,
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
549 * they are only a reference */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
550 lua_pushstring(L, LUA_SIGNAL);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
551 lua_newtable(L);
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
552
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
553 while(lua_signals[i].name != NULL) {
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
554 /* registry table */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
555 lua_pushstring(L, lua_signals[i].name);
10799
763bb2ce3f60 util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3]
Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
556 lua_pushinteger(L, lua_signals[i].sig);
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
557 lua_settable(L, -3);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
558 /* signal table */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
559 lua_pushstring(L, lua_signals[i].name);
10799
763bb2ce3f60 util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3]
Kim Alvefur <zash@zash.se>
parents: 10480
diff changeset
560 lua_pushinteger(L, lua_signals[i].sig);
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
561 lua_settable(L, -5);
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
562 i++;
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
563 }
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
564
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
565 /* add newtable to the registry */
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
566 lua_settable(L, LUA_REGISTRYINDEX);
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
567
6615
8e4572a642cb util-src/*.c: astyle --indent=tab --brackets=attach --indent-switches --break-blocks --pad-oper --unpad-paren --add-brackets --align-pointer=type --lineend=linux
Kim Alvefur <zash@zash.se>
parents: 6413
diff changeset
568 return 1;
988
8cb9a0d59e78 util.lsignal: Add lsignal library for catching POSIX signals
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
569 }
12976
a187600ec7d6 util: Add compat for prosody module name change to C sources
Kim Alvefur <zash@zash.se>
parents: 12575
diff changeset
570 int luaopen_util_signal(lua_State *L) {
a187600ec7d6 util: Add compat for prosody module name change to C sources
Kim Alvefur <zash@zash.se>
parents: 12575
diff changeset
571 return luaopen_prosody_util_signal(L);
a187600ec7d6 util: Add compat for prosody module name change to C sources
Kim Alvefur <zash@zash.se>
parents: 12575
diff changeset
572 }