1struct semid_ds { 2 struct ipc_perm sem_perm; 3 time_t sem_otime; 4 time_t __unused1; 5 time_t sem_ctime; 6 time_t __unused2; 7#if __BYTE_ORDER == __LITTLE_ENDIAN 8 unsigned short sem_nsems; 9 char __sem_nsems_pad[sizeof(time_t)-sizeof(short)]; 10#else 11 char __sem_nsems_pad[sizeof(time_t)-sizeof(short)]; 12 unsigned short sem_nsems; 13#endif 14 time_t __unused3; 15 time_t __unused4; 16}; 17