text: struct semid_ds {
  	struct ipc_perm sem_perm;
  	time_t sem_otime;
  	time_t sem_ctime;
  	unsigned short sem_nsems;
  	char __sem_nsems_pad[sizeof(time_t)-sizeof(short)];
  	time_t __unused3;
  	time_t __unused4;
  };