1struct semid_ds { 2 struct ipc_perm sem_perm; 3 time_t sem_otime; 4 time_t sem_ctime; 5#if __BYTE_ORDER == __LITTLE_ENDIAN 6 unsigned short sem_nsems; 7 char __sem_nsems_pad[sizeof(time_t)-sizeof(short)]; 8#else 9 char __sem_nsems_pad[sizeof(time_t)-sizeof(short)]; 10 unsigned short sem_nsems; 11#endif 12 time_t __unused3; 13 time_t __unused4; 14}; 15