#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "restart.h"

int main(int argc, char *argv[]) {
   int bytesread;
   int childpid;
   int fd, fd1, fd2;

   if (argc != 3) {
      fprintf(stderr, "Usage: %s file1 file2\n", argv[0]);
      return 1;
   }
   if ((fd1 = open(argv[1], O_RDONLY)) == -1) {
      fprintf(stderr, "Failed to open file %s:%s\n", argv[1], strerror(errno));
      return 1;
   }
   if ((fd2 = open(argv[2], O_RDONLY)) == -1) {
      fprintf(stderr, "Failed to open file %s:%s\n", argv[2], strerror(errno));
      return 1;
   }
   if ((childpid = fork()) == -1) {
      perror("Failed to create child process");
      return 1;
   }
   if (childpid > 0)                                         /* parent code */
      fd = fd1;
   else
      fd = fd2;
   bytesread = copyfile(fd, STDOUT_FILENO);
   fprintf(stderr, "Bytes read: %d\n", bytesread);
   return 0;
}