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Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / fs / xfs / xfs_exchrange.h
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright (c) 2020-2024 Oracle.  All Rights Reserved.
4  * Author: Darrick J. Wong <[email protected]>
5  */
6 #ifndef __XFS_EXCHRANGE_H__
7 #define __XFS_EXCHRANGE_H__
8
9 /* Update the mtime/cmtime of file1 and file2 */
10 #define __XFS_EXCHANGE_RANGE_UPD_CMTIME1        (1ULL << 63)
11 #define __XFS_EXCHANGE_RANGE_UPD_CMTIME2        (1ULL << 62)
12
13 /* Freshness check required */
14 #define __XFS_EXCHANGE_RANGE_CHECK_FRESH2       (1ULL << 61)
15
16 #define XFS_EXCHANGE_RANGE_PRIV_FLAGS   (__XFS_EXCHANGE_RANGE_UPD_CMTIME1 | \
17                                          __XFS_EXCHANGE_RANGE_UPD_CMTIME2 | \
18                                          __XFS_EXCHANGE_RANGE_CHECK_FRESH2)
19
20 struct xfs_exchrange {
21         struct file             *file1;
22         struct file             *file2;
23
24         loff_t                  file1_offset;
25         loff_t                  file2_offset;
26         u64                     length;
27
28         u64                     flags;  /* XFS_EXCHANGE_RANGE flags */
29
30         /* file2 metadata for freshness checks */
31         u64                     file2_ino;
32         struct timespec64       file2_mtime;
33         struct timespec64       file2_ctime;
34         u32                     file2_gen;
35 };
36
37 long xfs_ioc_exchange_range(struct file *file,
38                 struct xfs_exchange_range __user *argp);
39 long xfs_ioc_start_commit(struct file *file,
40                 struct xfs_commit_range __user *argp);
41 long xfs_ioc_commit_range(struct file *file,
42                 struct xfs_commit_range __user  *argp);
43
44 struct xfs_exchmaps_req;
45
46 void xfs_exchrange_ilock(struct xfs_trans *tp, struct xfs_inode *ip1,
47                 struct xfs_inode *ip2);
48 void xfs_exchrange_iunlock(struct xfs_inode *ip1, struct xfs_inode *ip2);
49
50 int xfs_exchrange_estimate(struct xfs_exchmaps_req *req);
51
52 #endif /* __XFS_EXCHRANGE_H__ */
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