#ifndef _LIBC_IO_FILE_H_
#define _LIBC_IO_FILE_H_

#include "ringbuf.h"

#include <mango/types.h>
#include <stddef.h>

enum file_flags {
	FILE_EOF = 0x01u,
	FILE_ERR = 0x02u,
	FILE_BIN = 0x04u,
	FILE_STATIC = 0x08u,
};

struct __opaque_file {
	enum file_flags f_flags;
	kern_futex_t f_lock;
	int f_prev;
	int f_buffer_mode;
	int f_fd;
	char f_unget;
	/* the current seek position of the buffered data (i.e. the offset of
	 * the data that would be returned by reading f_buf). */
	size_t f_seek;
	struct ringbuf f_buf;
};

extern void __libc_file_lock(struct __opaque_file *f);
extern void __libc_file_unlock(struct __opaque_file *f);

extern long __libc_file_read(struct __opaque_file *f, void *p, size_t count);
extern long __libc_file_write(
	struct __opaque_file *f,
	const void *p,
	size_t count);

#endif