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490
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1 /*
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502
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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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5 * 2005 Thomas Kuehne <thomas@kuehne.cn>
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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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32
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502
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33 /* time-out in minutes (cpu or system time)*/
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34 const int TIME_OUT=5;
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35
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36 #if defined(__GNU_LIBRARY__) || defined(__GLIBC__)
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37 #define USE_POSIX
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38 #endif
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39
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490
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40 #ifdef linux
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41 #define USE_POSIX
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42 #endif
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502
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43
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44 #if defined(__APPLE__) && defined(__MACH__)
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45 #define USE_POSIX
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46 #endif
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47
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48 #ifdef __FreeBSD__
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49 #define USE_POSIX
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50 #endif
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51
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498
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52
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490
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53 #ifdef USE_POSIX
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502
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54 #define USE_LIMIT
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55
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56 #include <unistd.h>
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57 #include <sys/wait.h>
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58
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502
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59 #ifdef USE_LIMIT
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60 #include <sys/types.h>
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61 #include <sys/time.h>
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62 #include <sys/resource.h>
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63
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64 const int PROC_LIMIT = 256; /* no processes */
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65 const int MEM_LIMIT = 200; /* mem megabytes */
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66 #endif
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67
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68 static pid_t pID;
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69
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498
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70 void resourceLimit(int signalID){
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71 #ifdef SIGXCPU
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72 if(signalID==SIGALRM || signalID==SIGXCPU){
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73 #else
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74 if(signalID==SIGALRM){
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75 #endif
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76 printf("EXIT CODE: signal %d (time-out after %d minutes)", signalID, TIME_OUT);
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498
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77 }else{
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78 printf("EXIT CODE: signal %d\n", signalID);
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79 }
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80
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81 fflush(stdout);
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82 fflush(stderr);
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83 kill(-pID, SIGTERM);
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84 sleep(1);
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495
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85 kill(-pID, SIGKILL);
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86
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87 if(signalID==SIGUSR1 || signalID==SIGUSR2){
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88 exit(EXIT_FAILURE);
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89 }else{
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90 exit(EXIT_SUCCESS);
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91 }
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490
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92 }
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93
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94 int main(int argc, char** arg){
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502
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95 #ifdef USE_LIMIT
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96 {
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97 struct rlimit limit;
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98
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99 limit.rlim_cur = TIME_OUT * 60;
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100 limit.rlim_max = TIME_OUT * 60;
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101 if(0!=setrlimit(RLIMIT_CPU, &limit)){
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102 fprintf(stderr, "failed to set cpu limit [%d]\n", errno);
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103 return EXIT_FAILURE;
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104 }
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105
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106 limit.rlim_cur = PROC_LIMIT;
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107 limit.rlim_max = PROC_LIMIT;
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108 if(0!=setrlimit(RLIMIT_NPROC, &limit)){
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109 fprintf(stderr, "failed to set proc limit [%d]\n", errno);
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110 return EXIT_FAILURE;
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111 }
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112
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113 limit.rlim_cur = MEM_LIMIT * 1024L * 1024L;
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114 limit.rlim_max = MEM_LIMIT * 1024L * 1024L;
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115 #ifdef RLIMIT_AS
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116 if(0!=setrlimit(RLIMIT_AS, &limit)){
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117 fprintf(stderr, "failed to set mem limit (AS) [%d]\n", errno);
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118 return EXIT_FAILURE;
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119 }
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120 #endif /* RLIMIT_AS */
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121
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122 if(0!=setrlimit(RLIMIT_DATA, &limit)){
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123 fprintf(stderr, "failed to set mem limit (DATA) [%d]\n", errno);
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124 return EXIT_FAILURE;
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125 }
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126
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127 if(0!=setrlimit(RLIMIT_RSS, &limit)){
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128 fprintf(stderr, "failed to set mem limit (RSS) [%d]\n", errno);
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129 return EXIT_FAILURE;
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130 }
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131 #if defined(RLIMIT_MEMLOCK) && !defined(linux)
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132 if(0!=setrlimit(RLIMIT_MEMLOCK, &limit)){
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133 fprintf(stderr, "failed to set mem limit (MEMLOCK) [%d]\n", errno);
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134 return EXIT_FAILURE;
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135 }
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136 #endif /* RLIMIT_MEMLOCK */
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137 }
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138 #endif /* USE_LIMIT */
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495
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139 pID = fork();
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490
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140 if (pID == 0){
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498
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141 /* child: resource management */
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495
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142 pID=setsid();
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143
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498
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144 /* child: execute args */
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490
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145 int cmdLen=1;
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146 int i;
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147 for(i=1; i<argc; i++){
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148 cmdLen+=strlen(arg[i]);
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149 cmdLen+=3;
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150 }
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151
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152 char* cmd = malloc(cmdLen);
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153 *cmd='\x00';
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154
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155 for(i=1; i<argc; i++){
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156 strcat(cmd, "\"");
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157 strcat(cmd, arg[i]);
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158 strcat(cmd, "\" ");
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159 }
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493
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160 #ifdef DEBUG
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161 printf("cmd[%i min]: %s\n", TIME_OUT, cmd);
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493
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162 #endif
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163 printf("EXIT CODE: %d\n", system(cmd));
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490
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164 }else if (pID < 0){
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165 fprintf(stderr, "failed to fork\n");
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166 return EXIT_FAILURE;
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167 }else{
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498
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168 /* parent : clean kill */
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490
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169 struct sigaction acti;
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498
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170 acti.sa_handler = &resourceLimit;
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171 sigaction(SIGHUP, &acti, NULL);
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172 sigaction(SIGINT, &acti, NULL);
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173 sigaction(SIGQUIT, &acti, NULL);
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174 sigaction(SIGABRT, &acti, NULL);
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175 sigaction(SIGTERM, &acti, NULL);
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176
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177 /* parent : timeout */
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490
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178 if(0!=sigaction(SIGALRM, &acti, NULL)){
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502
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179 fprintf(stderr, "failed to set timeout [%d]\n", errno);
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498
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180 resourceLimit(SIGUSR1);
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181 return EXIT_FAILURE; /* never executed */
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182 }
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183 #ifndef USE_LIMITS
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184 alarm(TIME_OUT * 60);
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185 #endif
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490
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186 wait(NULL);
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187 }
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188
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189 return EXIT_SUCCESS;
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190 }
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498
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191 #else /* USE_POSIX */
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192
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193 #error "no implementation present for your OS"
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490
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194
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195 #endif /* USE_POSIX else */
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