/*
 *
 * Create a semaphore
 *
 */
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <errno.h>

#define COUNT 1
#define PERM 0666
#define KEY 'JHL '

main()
{
  int id;
  int result;

  id = semget(KEY,COUNT,IPC_CREAT|IPC_EXCL|PERM);
  printf("status of create = %d\n", id);
  if(id == -1){perror("Bad Semaphore Create"); exit(0);}

  /* set the value to one */
  result = semctl(id,0,SETVAL,1);
  if(result == -1){ perror("Bad SetVal call");exit(0);}
  printf("Semaphore created with an id of %d\n",id);
}