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 9 struct xfile { 10 struct file *file; 11 }; 12 13 int xfile_create(const char *description, loff_t isize, struct xfile **xfilep); 14 void xfile_destroy(struct xfile *xf); 15 16 int xfile_load(struct xfile *xf, void *buf, size_t count, loff_t pos); 17 int xfile_store(struct xfile *xf, const void *buf, size_t count, 18 loff_t pos); 19 20 void xfile_discard(struct xfile *xf, loff_t pos, u64 count); 21 loff_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 */ 26 struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len, 27 unsigned int flags); 28 void xfile_put_folio(struct xfile *xf, struct folio *folio); 29 30 static 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