rosetta/lib/libfs/include/fs/file.h

#ifndef FS_FILE_H_
#define FS_FILE_H_

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

struct fs_file;
struct xpc_buffer;

struct fs_file_ops {
	enum fs_status (*f_read)(
		struct fs_file *,
		struct xpc_buffer *,
		size_t,
		off_t *);
	enum fs_status (*f_write)(
		struct fs_file *,
		const struct xpc_buffer *,
		size_t,
		off_t *);
	enum fs_status (*f_seek)(struct fs_file *, off_t, int);
};

extern struct fs_inode *fs_file_get_inode(const struct fs_file *f);
extern size_t fs_file_get_cursor(const struct fs_file *f);
extern enum fs_status fs_file_read(
	struct fs_file *f,
	struct xpc_buffer *buf,
	size_t count);
extern enum fs_status fs_file_write(
	struct fs_file *f,
	struct xpc_buffer *buf,
	size_t count);

#endif