| Darrick J. Wong | e89c041 | 2017-03-28 14:56:37 -0700 | [diff] [blame] | 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__ */ |