key_t              16 include/linux/ipc.h 	key_t		key;
key_t             653 include/linux/syscalls.h asmlinkage long sys_msgget(key_t key, int msgflg);
key_t             660 include/linux/syscalls.h asmlinkage long sys_semget(key_t key, int nsems, int semflg);
key_t             668 include/linux/syscalls.h asmlinkage long sys_shmget(key_t key, size_t size, int flag);