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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2020-2024 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <djwong@kernel.org>
*/
#ifndef __XFS_EXCHRANGE_H__
#define __XFS_EXCHRANGE_H__
/* Update the mtime/cmtime of file1 and file2 */
#define __XFS_EXCHANGE_RANGE_UPD_CMTIME1 (1ULL << 63)
#define __XFS_EXCHANGE_RANGE_UPD_CMTIME2 (1ULL << 62)
/* Freshness check required */
#define __XFS_EXCHANGE_RANGE_CHECK_FRESH2 (1ULL << 61)
#define XFS_EXCHANGE_RANGE_PRIV_FLAGS (__XFS_EXCHANGE_RANGE_UPD_CMTIME1 | \
__XFS_EXCHANGE_RANGE_UPD_CMTIME2 | \
__XFS_EXCHANGE_RANGE_CHECK_FRESH2)
struct xfs_exchrange {
struct file *file1;
struct file *file2;
loff_t file1_offset;
loff_t file2_offset;
u64 length;
u64 flags; /* XFS_EXCHANGE_RANGE flags */
/* file2 metadata for freshness checks */
u64 file2_ino;
struct timespec64 file2_mtime;
struct timespec64 file2_ctime;
u32 file2_gen;
};
long xfs_ioc_exchange_range(struct file *file,
struct xfs_exchange_range __user *argp);
long xfs_ioc_start_commit(struct file *file,
struct xfs_commit_range __user *argp);
long xfs_ioc_commit_range(struct file *file,
struct xfs_commit_range __user *argp);
struct xfs_exchmaps_req;
void xfs_exchrange_ilock(struct xfs_trans *tp, struct xfs_inode *ip1,
struct xfs_inode *ip2);
void xfs_exchrange_iunlock(struct xfs_inode *ip1, struct xfs_inode *ip2);
int xfs_exchrange_estimate(struct xfs_exchmaps_req *req);
#endif /* __XFS_EXCHRANGE_H__ */
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