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linux/fs/xfs/scrub/attr_repair.h

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xfs: repair extended attributes If the extended attributes look bad, try to sift through the rubble to find whatever keys/values we can, stage a new attribute structure in a temporary file and use the atomic extent swapping mechanism to commit the results in bulk. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-04-15 14:54:45 -07:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2018-2024 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <djwong@kernel.org>
*/
#ifndef __XFS_SCRUB_ATTR_REPAIR_H__
#define __XFS_SCRUB_ATTR_REPAIR_H__
xfs: actually rebuild the parent pointer xattrs Once we've assembled all the parent pointers for a file, we need to commit the new dataset atomically to that file. Parent pointer records are embedded in the xattr structure, which means that we must write a new extended attribute structure, again, atomically. Therefore, we must copy the non-parent-pointer attributes from the file being repaired into the temporary file's extended attributes and then call the atomic extent swap mechanism to exchange the blocks. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-04-22 09:48:16 -07:00
struct xrep_tempexch;
int xrep_xattr_swap(struct xfs_scrub *sc, struct xrep_tempexch *tx);
xfs: repair extended attributes If the extended attributes look bad, try to sift through the rubble to find whatever keys/values we can, stage a new attribute structure in a temporary file and use the atomic extent swapping mechanism to commit the results in bulk. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-04-15 14:54:45 -07:00
int xrep_xattr_reset_fork(struct xfs_scrub *sc);
xfs: actually rebuild the parent pointer xattrs Once we've assembled all the parent pointers for a file, we need to commit the new dataset atomically to that file. Parent pointer records are embedded in the xattr structure, which means that we must write a new extended attribute structure, again, atomically. Therefore, we must copy the non-parent-pointer attributes from the file being repaired into the temporary file's extended attributes and then call the atomic extent swap mechanism to exchange the blocks. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-04-22 09:48:16 -07:00
int xrep_xattr_reset_tempfile_fork(struct xfs_scrub *sc);
xfs: repair extended attributes If the extended attributes look bad, try to sift through the rubble to find whatever keys/values we can, stage a new attribute structure in a temporary file and use the atomic extent swapping mechanism to commit the results in bulk. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-04-15 14:54:45 -07:00
#endif /* __XFS_SCRUB_ATTR_REPAIR_H__ */
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