toaruos/base/usr/include/fcntl.h

#pragma once

#define O_RDONLY     0x0000
#define O_WRONLY     0x0001
#define O_RDWR       0x0002
#define O_APPEND     0x0008
#define O_CREAT      0x0200
#define O_TRUNC      0x0400
#define O_EXCL       0x0800
#define O_NOFOLLOW   0x1000
#define O_PATH       0x2000

#define F_OK 1
#define R_OK 4
#define W_OK 2
#define X_OK 1

extern int open (const char *, int, ...);