ipc_perm23         62 sys/ipc.h      struct ipc_perm23 {
ipc_perm23         55 sys/msg.h      	struct ipc_perm23 msg_perm;	/* msg queue permission bits */
ipc_perm23         70 sys/sem.h      	struct ipc_perm23 sem_perm;	/* operation permission struct */
ipc_perm23        117 sys/shm.h      	struct ipc_perm23 shm_perm;	/* operation permission structure */