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490
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1 /*
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545
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2 * crashRun - execute command with restricted CPU time and memory usage
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490
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3 *
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502
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4 * Copyright (C)
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545
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5 * 2005 Thomas Kuehne <thomas@kuehne.cn>
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684
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6 * 2005 Anders F Björklund <afb@algonet.se>
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490
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7 *
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8 * This program is free software; you can redistribute it and/or modify
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9 * it under the terms of the GNU General Public License as published by
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10 * the Free Software Foundation; either version 2 of the License, or
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11 * (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful,
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14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 * GNU General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU General Public License
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19 * along with this program; if not, write to the Free Software
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20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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21 *
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22 * $HeadURL$
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23 * $Date$
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24 * $Author$
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25 *
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26 */
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27
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498
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28 #include <errno.h>
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29 #include <string.h>
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30 #include <stdlib.h>
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31 #include <stdio.h>
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545
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32 #include <signal.h>
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498
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33
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34 const int TIME_OUT= 5*60; /* time-out in seconds (might be cpu or system time)*/
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35 const int MEM_LIMIT = 200; /* mem megabytes */
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36
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37 /* try to cope with -ansi and other threads */
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38 #if defined(__GNU_LIBRARY__) || defined(__GLIBC__) || defined(__USE_POSIX)
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498
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39 #define USE_POSIX
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40 #endif
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41
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684
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42 #if defined(linux) || defined(__FreeBsd__) || defined(__OpenBSD__)
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490
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43 #define USE_POSIX
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44 #endif
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45
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46 #if defined(__APPLE__) && defined(__MACH__)
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47 #define USE_POSIX
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48 #endif
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49
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545
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50 #if !defined(USE_POSIX) && \
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51 (defined(WINDOWS) || defined(WIN) || defined(WINVER) || defined(WIN32))
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52 #define USE_WINDOWS
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53 #endif
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54
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545
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55
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56 /* is the environment sane? */
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57 #if defined(USE_POSIX) && defined(USE_WINDOWS)
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58 #error USE_WINDOWS and USE_POSIX are defined
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59 #endif
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60
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61 #if !defined(USE_POSIX) && !defined(USE_WINDOWS)
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62 #error neither USE_POSIX nor USE_WINDOWS are defined
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63 #endif
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64
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65
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66 /* API inludes and config */
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67 #ifdef USE_POSIX
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68 #define USE_POSIX_LIMITS
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69 #include <sys/types.h>
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490
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70 #include <unistd.h>
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71 #include <sys/wait.h>
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72 static pid_t pID;
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73 #endif
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74
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545
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75 #ifdef USE_POSIX_LIMITS
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76 #ifndef USE_POSIX
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77 #error USE_POSIX_LIMITS requires USE_POSIX
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78 #endif
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79 #include <sys/resource.h>
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502
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80 #include <sys/types.h>
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81 #endif
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82
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83
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84 /* let's start implementing :) */
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495
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85
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545
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86 void handleSignal(int signalID){
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87 #ifdef SIGALARM
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88 if( signalID==SIGALRM
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498
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89 #ifdef SIGXCPU
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90 || signalID==SIGXCPU
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498
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91 #endif
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92 )
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93 printf("EXIT CODE: signal %d (time-out after %d seconds)", signalID, TIME_OUT);
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94 else
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95 #endif
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96 printf("EXIT CODE: signal %d, errno %d\n", signalID, errno);
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97
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98 fflush(stdout);
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99 fflush(stderr);
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100
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101 #ifdef USE_POSIX
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102 kill(-pID, SIGTERM);
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103 sleep(1);
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104 kill(-pID, SIGKILL);
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545
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105 #else
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106 #error sub processes have to be killed
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107 #endif
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108
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109 #ifdef SIGUSR1
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110 if(signalID==SIGUSR1 || signalID==SIGUSR2)
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111 exit(EXIT_SUCCESS);
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112 else
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113 #endif
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114 exit(EXIT_FAILURE);
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115 }
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116
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117 void setupLimits(){
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118 #ifdef USE_POSIX_LIMITS
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119 struct rlimit limit;
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120
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121 limit.rlim_cur = TIME_OUT;
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122 limit.rlim_max = TIME_OUT;
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123 if(0!=setrlimit(RLIMIT_CPU, &limit)){
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124 fprintf(stderr, "failed to set cpu limit [%d]\n", errno);
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125 exit(EXIT_FAILURE);
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126 }
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127
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128 limit.rlim_cur = MEM_LIMIT * 1024L * 1024L;
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129 limit.rlim_max = MEM_LIMIT * 1024L * 1024L;
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130 #ifdef RLIMIT_AS
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131 if(0!=setrlimit(RLIMIT_AS, &limit)){
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132 fprintf(stderr, "failed to set mem limit (AS) [%d]\n", errno);
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133 exit(EXIT_FAILURE);
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134 }
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135 #endif
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136
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137 if(0!=setrlimit(RLIMIT_DATA, &limit)){
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138 fprintf(stderr, "failed to set mem limit (DATA) [%d]\n", errno);
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139 exit(EXIT_FAILURE);
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140 }
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141
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142 if(0!=setrlimit(RLIMIT_RSS, &limit)){
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143 fprintf(stderr, "failed to set mem limit (RSS) [%d]\n", errno);
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144 exit(EXIT_FAILURE);
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145 }
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146 #if defined(RLIMIT_MEMLOCK) && !defined(linux)
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147 if(0!=setrlimit(RLIMIT_MEMLOCK, &limit)){
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148 fprintf(stderr, "failed to set mem limit (MEMLOCK) [%d]\n", errno);
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149 exit(EXIT_FAILURE);
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150 }
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151 #endif
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152 #endif /* USE_POSIX_LIMITS */
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153 }
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154
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155 void setupHandlers(){
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156 #ifdef USE_POSIX
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157 #ifdef SIGHUP
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158 signal(SIGHUP, &handleSignal);
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159 #endif
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160 signal(SIGINT, &handleSignal);
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161 #ifdef SIGQUIT
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162 signal(SIGQUIT, &handleSignal);
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163 #endif
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164 signal(SIGILL, &handleSignal);
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165 #ifdef SIGTRAP
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166 signal(SIGTRAP, &handleSignal);
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167 #endif
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168 signal(SIGABRT, &handleSignal);
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169 #ifdef SIGIOT
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170 signal(SIGIOT, &handleSignal);
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171 #endif
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172 #ifdef SIGBUS
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173 signal(SIGBUS, &handleSignal);
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174 #endif
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175 signal(SIGFPE, &handleSignal);
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176 #ifdef SIGKILL
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177 signal(SIGKILL, &handleSignal);
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178 #endif
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179 #ifdef SIGUSR1
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180 signal(SIGUSR1, &handleSignal);
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181 #endif
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182 signal(SIGSEGV, &handleSignal);
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183 #ifdef SIGUSR2
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184 signal(SIGUSR2, &handleSignal);
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185 #endif
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186 #ifdef SIGPIPE
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187 signal(SIGPIPE, &handleSignal);
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188 #endif
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189 #ifdef SIGALRM
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190 signal(SIGALRM, &handleSignal);
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191 #endif
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192 signal(SIGTERM, &handleSignal);
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193 #ifdef SIGSTKFLT
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194 signal(SIGSTKFLT, &handleSignal);
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195 #endif
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196 #ifdef SIGTSTP
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197 signal(SIGTSTP, &handleSignal);
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198 #endif
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199 #ifdef SIGXCPU
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200 signal(SIGXCPU, &handleSignal);
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201 #endif
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202 #ifdef SIGXFSZ
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203 signal(SIGXFSZ, &handleSignal);
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204 #endif
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205 #ifdef SIGVTALRM
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206 signal(SIGVTALRM, &handleSignal);
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207 #endif
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208 #ifdef SIGSYS
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209 signal(SIGSYS, &handleSignal);
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210 #endif
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211 #endif /* USE_POSIX */
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212 }
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213
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214 char* reconstructCmd(int argc, char** argv){
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215 size_t cmdLen=1;
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216 size_t tmpLen;
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217 size_t i;
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218 char* cmd;
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219 char* tmp;
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220
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221 for(i=0; i<argc; i++){
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222 cmdLen+=strlen(argv[i]);
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223 cmdLen+=3;
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224 }
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225
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226 cmd = (char*)malloc(cmdLen);
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227 *cmd = '\x00';
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228 tmp = cmd;
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229
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230 for(i=0; i<argc; i++){
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231 tmpLen = snprintf(tmp, cmdLen, "\"%s\" ", argv[i]);
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232 tmp += tmpLen;
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233 cmdLen -= tmpLen;
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545
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234 }
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235 return cmd;
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236 }
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237
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238 int main(int argc, char** argv){
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239 char* cmd;
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240 if(argc<2){
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241 fprintf(stderr, "name of command to call required\n");
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242 return EXIT_FAILURE;
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243 }
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244 cmd = reconstructCmd(argc-1, argv+1);
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245
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246 #ifdef USE_POSIX
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247 setupLimits();
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248 pID = fork();
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249 if(pID == 0){
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250 /* child */
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251 pID=setsid();
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493
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252 #ifdef DEBUG
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253 printf("cmd[%i sec]: %s \n", TIME_OUT, cmd);
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254 #endif
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255 printf("EXIT CODE: %d\n", system(cmd));
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545
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256 }else if(pID < 0){
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257 fprintf(stderr, "failed to fork\n");
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258 return EXIT_FAILURE;
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259 }else{
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545
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260 /* parent */
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261 setupHandlers();
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262 #if !(defined(USE_POSIX_LIMITS) && defined(SIGXCPU))
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263 alarm(TIME_OUT);
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264 #endif
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265 wait(NULL);
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266 }
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267 return EXIT_SUCCESS;
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498
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268 #else /* USE_POSIX */
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269
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270 #error no test run implmentation present for your system
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490
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271
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272 #endif /* USE_POSIX else */
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545
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273 }
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