#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <spawn.h>
#include <signal.h>
#include <sys/wait.h>

extern char **environ;

pid_t
run_sleep ()
{
  pid_t pid;
  char *argv[] = { "sleep", "10", NULL };
  int err = posix_spawnp (&pid, "/bin/sleep", NULL, NULL, argv, environ);
  if (err == 0)
    return pid;
  else
    {
      printf ("posix_spawnp: %s\n", strerror (err));
      exit (1);
    }
}

int
main ()
{
  int status;
  pid_t pid = run_sleep ();
  if (wait (&status) < 0)
    perror ("wait");
  if (WIFEXITED (status))
    printf ("sleep 10 exited normally with status %d\n", WEXITSTATUS (status));
  else if (WIFSIGNALED (status))
    printf ("sleep 10 exited due to signal %d\n", WTERMSIG (status));
  else
    printf ("????\n");
}