type {struct ipc_perm}

element {struct ipc_perm} uid_t uid
element {struct ipc_perm} gid_t gid
element {struct ipc_perm} uid_t cuid
element {struct ipc_perm} gid_t cgid
element {struct ipc_perm} mode_t mode

type uid_t
type gid_t
type mode_t
type key_t

constant IPC_CREAT
constant IPC_EXCL
constant IPC_NOWAIT

constant IPC_PRIVATE

constant IPC_RMID
constant IPC_SET
constant IPC_STAT

function key_t ftok (const char*, int)

allow ipc_*
allow IPC_*
allow *_t