1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Copyright (C) 2018-2023 Oracle.  All Rights Reserved.
 4 * Author: Darrick J. Wong <djwong@kernel.org>
 5 */
 6#ifndef __XFS_SCRUB_XFILE_H__
 7#define __XFS_SCRUB_XFILE_H__
 8
 9struct xfile {
10	struct file		*file;
11};
12
13int xfile_create(const char *description, loff_t isize, struct xfile **xfilep);
14void xfile_destroy(struct xfile *xf);
15
16int xfile_load(struct xfile *xf, void *buf, size_t count, loff_t pos);
17int xfile_store(struct xfile *xf, const void *buf, size_t count,
18		loff_t pos);
19
20loff_t xfile_seek_data(struct xfile *xf, loff_t pos);
21
22#define XFILE_MAX_FOLIO_SIZE	(PAGE_SIZE << MAX_PAGECACHE_ORDER)
23
24#define XFILE_ALLOC		(1 << 0) /* allocate folio if not present */
25struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len,
26		unsigned int flags);
27void xfile_put_folio(struct xfile *xf, struct folio *folio);
28
29#endif /* __XFS_SCRUB_XFILE_H__ */