ipc_perm           16 include/linux/msg.h 	struct ipc_perm msg_perm;
ipc_perm           24 include/linux/sem.h 	struct ipc_perm	sem_perm;		/* permissions .. see ipc.h */
ipc_perm           33 include/linux/shm.h 	struct ipc_perm		shm_perm;	/* operation perms */
ipc_perm          144 kernel/auditsc.c 	struct ipc_perm		p;