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e89c0413 DW |
1 | /* |
2 | * Copyright (C) 2017 Oracle. All Rights Reserved. | |
3 | * | |
4 | * Author: Darrick J. Wong <darrick.wong@oracle.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it would be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write the Free Software Foundation, | |
18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
19 | */ | |
20 | #ifndef __XFS_FSMAP_H__ | |
21 | #define __XFS_FSMAP_H__ | |
22 | ||
23 | struct fsmap; | |
24 | ||
25 | /* internal fsmap representation */ | |
26 | struct xfs_fsmap { | |
27 | dev_t fmr_device; /* device id */ | |
28 | uint32_t fmr_flags; /* mapping flags */ | |
29 | uint64_t fmr_physical; /* device offset of segment */ | |
30 | uint64_t fmr_owner; /* owner id */ | |
31 | xfs_fileoff_t fmr_offset; /* file offset of segment */ | |
32 | xfs_filblks_t fmr_length; /* length of segment, blocks */ | |
33 | }; | |
34 | ||
35 | struct xfs_fsmap_head { | |
36 | uint32_t fmh_iflags; /* control flags */ | |
37 | uint32_t fmh_oflags; /* output flags */ | |
38 | unsigned int fmh_count; /* # of entries in array incl. input */ | |
39 | unsigned int fmh_entries; /* # of entries filled in (output). */ | |
40 | ||
41 | struct xfs_fsmap fmh_keys[2]; /* low and high keys */ | |
42 | }; | |
43 | ||
44 | void xfs_fsmap_from_internal(struct fsmap *dest, struct xfs_fsmap *src); | |
45 | void xfs_fsmap_to_internal(struct xfs_fsmap *dest, struct fsmap *src); | |
46 | ||
47 | /* fsmap to userspace formatter - copy to user & advance pointer */ | |
48 | typedef int (*xfs_fsmap_format_t)(struct xfs_fsmap *, void *); | |
49 | ||
50 | int xfs_getfsmap(struct xfs_mount *mp, struct xfs_fsmap_head *head, | |
51 | xfs_fsmap_format_t formatter, void *arg); | |
52 | ||
53 | #endif /* __XFS_FSMAP_H__ */ |