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/*
This file is part of GNUnet
(C) 2010 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file contrib/timeout_watchdog.c
* @brief small tool starting a child process, waiting that it terminates or killing it after a given timeout period
* @author Matthias Wachs
*/
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static pid_t child;
static void sigchld_handler(int val)
{
int status = 0;
int ret = 0;
waitpid (child, &status, 0);
if (WIFEXITED(status) != 0)
{
ret = WEXITSTATUS(status);
printf("Test process exited with result %u\n", ret);
}
if (WIFSIGNALED(status) != 0)
{
ret = WTERMSIG(status);
printf("Test process was signaled %u\n", ret);
}
exit(ret);
}
static void sigint_handler(int val)
{
kill(0, val);
exit(val);
}
int main(int argc, char *argv[])
{
int timeout = 0;
pid_t gpid =0;
if (argc < 3)
{
printf("arg 1: timeout in sec., arg 2: executable, arg<n> arguments\n");
exit(1);
}
timeout = atoi(argv[1]);
if (timeout == 0)
timeout = 600;
/* with getpgid() it does not compile, but getpgrp is the BSD version and working */
gpid = getpgrp();
signal(SIGCHLD, sigchld_handler);
signal(SIGABRT, sigint_handler);
signal(SIGFPE, sigint_handler);
signal(SIGILL, sigint_handler);
signal(SIGINT, sigint_handler);
signal(SIGSEGV, sigint_handler);
signal(SIGTERM, sigint_handler);
child = fork();
if (child==0)
{
/* int setpgrp(pid_t pid, pid_t pgid); is not working on this machine*/
//setpgrp (0, pid_t gpid);
setpgid(0,gpid);
execvp(argv[2],&argv[2]);
exit(1);
}
if (child > 0)
{
sleep(timeout);
printf("Child processes were killed after timeout of %u seconds\n",timeout);
kill(0,SIGTERM);
exit(1);
}
exit(1);
}
/* end of timeout_watchdog.c */
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