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#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
pid_t f;
void timeout(int s)
{
killpg(f,SIGTERM);
kill(getpid(),SIGALRM);
_exit(111);
}
int main(int argc,char **argv)
{
struct sigaction sa;
int seconds;
int w;
if (!*argv) return 100;
if (!*++argv) return 100;
seconds = atoi(*argv);
if (!*++argv) return 100;
f = fork();
if (f == -1) return 111;
if (f == 0) {
setpgid(0,0);
execvp(*argv,argv);
return 111;
}
sa.sa_handler = timeout;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESETHAND | SA_NODEFER;
sigaction(SIGALRM,&sa,0);
alarm(seconds);
while (wait(&w) != f) ;
if (WIFEXITED(w)) return WEXITSTATUS(w);
return 111;
}
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