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 20void xfile_discard(struct xfile *xf, loff_t pos, u64 count); 21loff_t xfile_seek_data(struct xfile *xf, loff_t pos); 22 23#define XFILE_MAX_FOLIO_SIZE (PAGE_SIZE << MAX_PAGECACHE_ORDER) 24 25#define XFILE_ALLOC (1 << 0) /* allocate folio if not present */ 26struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len, 27 unsigned int flags); 28void xfile_put_folio(struct xfile *xf, struct folio *folio); 29 30static inline unsigned long long xfile_bytes(struct xfile *xf) 31{ 32 return file_inode(xf->file)->i_blocks << SECTOR_SHIFT; 33} 34 35#endif /* __XFS_SCRUB_XFILE_H__ */ 36