type c-char* = i8
type c-uchar* = u8

type c-short* = i16
type c-ushort* = u16

type c-int* = i32
type c-uint* = u32

type c-long* = i64
type c-ulong* = u64

type c-longlong* = i64
type c-ulonglong* = u64

type c-size* = uint
type c-ssize* = int

type mode* = u32

fn extern "c" close*(fd: c-int) c-int
fn extern "c" open*(pathname: ptr[c-char], flags: c-int, mode: mode) c-int
fn extern "c" printf*(format: ptr[c-uchar], ..) c-int
fn extern "c" read*(fd: c-int, buf: ptr[c-uchar], count: c-size) c-ssize
fn extern "c" unlink*(pathname: ptr[c-char]) c-int
fn extern "c" write*(fd: c-int, buf: ptr[c-uchar], count: c-size) c-ssize
fn extern "c" __errno_location*() ptr[c-int]

const O_RDONLY*: c-int = 0
const O_WRONLY*: c-int = 1
const O_RDWR*: c-int = 2

const O_DIRECT*: c-int = 0x4000
const O_DIRECTORY*: c-int = 0x10000
const O_NOFOLLOW*: c-int = 0x20000

const O_APPEND*: c-int = 1024
const O_CREAT*: c-int = 64
const O_EXCL*: c-int = 128
const O_NOCTTY*: c-int = 256
const O_NONBLOCK*: c-int = 2048
const O_SYNC*: c-int = 1052672
const O_RSYNC*: c-int = 1052672
const O_DSYNC*: c-int = 4096
const O_FSYNC*: c-int = 0x101000
const O_NOATIME*: c-int = 0o1000000
const O_PATH*: c-int = 0o10000000
const O_TMPFILE*: c-int = 0o20000000 | O_DIRECTORY

const O_TRUNC*: c-int = 512