36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2018-2023 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <djwong@kernel.org>
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*/
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#ifndef __XFS_SCRUB_XFILE_H__
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#define __XFS_SCRUB_XFILE_H__
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struct xfile {
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struct file *file;
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};
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int xfile_create(const char *description, loff_t isize, struct xfile **xfilep);
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void xfile_destroy(struct xfile *xf);
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int xfile_load(struct xfile *xf, void *buf, size_t count, loff_t pos);
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int xfile_store(struct xfile *xf, const void *buf, size_t count,
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loff_t pos);
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void xfile_discard(struct xfile *xf, loff_t pos, u64 count);
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loff_t xfile_seek_data(struct xfile *xf, loff_t pos);
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#define XFILE_MAX_FOLIO_SIZE (PAGE_SIZE << MAX_PAGECACHE_ORDER)
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#define XFILE_ALLOC (1 << 0) /* allocate folio if not present */
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struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len,
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unsigned int flags);
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void xfile_put_folio(struct xfile *xf, struct folio *folio);
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static inline unsigned long long xfile_bytes(struct xfile *xf)
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{
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return file_inode(xf->file)->i_blocks << SECTOR_SHIFT;
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}
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#endif /* __XFS_SCRUB_XFILE_H__ */
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