text: // Test that fork fails gracefully.
  // Tiny executable so that the limit can be filling the proc table.
  
  #include "types.h"
  #include "stat.h"
  #include "user.h"
  #define N  1000
  
  void
  printf(int fd, char *s, ...)
  {
    write(fd, s, strlen(s));
  }
  
  void
  forktest(void)
  {
    int n, pid;
  
    printf(1, "fork test\n");
  
    for(n=0; n<N; n++){
      pid = fork();
      if(pid < 0)
        break;
      if(pid == 0)
        exit();
    }
    
    if(n == N){
      printf(1, "fork claimed to work N times!\n", N);
      exit();
    }
    
    for(; n > 0; n--){
      if(wait() < 0){
        printf(1, "wait stopped early\n");
        exit();
      }
    }
    
    if(wait() != -1){
      printf(1, "wait got too many\n");
      exit();
    }
    
    printf(1, "fork test OK\n");
  }
  
  int
  main(void)
  {
    forktest();
    exit();
  }
  