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;