#include <stdio.h>
#include <stdlib.h>
#include <unistd.h> 
#include <sys/wait.h>
#include "restart.h"

int makeargv(const char *s, const char *delimiters, char ***argvp);

int main(int argc, char *argv[]) {
   pid_t childpid;
   char delim[] = " \t";
   char **myargv;

   if (argc != 2) {
      fprintf(stderr, "Usage: %s string\n", argv[0]);
      return 1;
   }
   childpid = fork();
   if (childpid == -1) {
      perror("Failed to fork");
      return 1; 
   }
   if (childpid == 0) {                 /* child becomes a background process */
     if (setsid() == -1)
        perror("Child failed to become a session leader");
     else if (makeargv(argv[1], delim, &myargv) == -1)
        fprintf(stderr, "Child failed to construct argument array\n");
     else {
        execvp(myargv[0], &myargv[0]);
        perror("Child failed to exec command");
     }
     return 1;                                  /* child should never return */
   }
   return 0;                                                 /* parent exits */
}