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__ */ 54