1 struct semid_ds { 2 struct ipc_perm sem_perm; 3 time_t sem_otime; 4 time_t sem_ctime; 5 unsigned short sem_nsems; 6 char __sem_nsems_pad[sizeof(time_t)-sizeof(short)]; 7 time_t __unused3; 8 time_t __unused4; 9 }; 10