1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2017 Oracle. All Rights Reserved. 4 * Author: Darrick J. Wong <darrick.wong@oracle.com> 5 */ 6 #ifndef __XFS_FSMAP_H__ 7 #define __XFS_FSMAP_H__ 8 9 struct fsmap; 10 11 /* internal fsmap representation */ 12 struct xfs_fsmap { 13 dev_t fmr_device; /* device id */ 14 uint32_t fmr_flags; /* mapping flags */ 15 uint64_t fmr_physical; /* device offset of segment */ 16 uint64_t fmr_owner; /* owner id */ 17 xfs_fileoff_t fmr_offset; /* file offset of segment */ 18 xfs_filblks_t fmr_length; /* length of segment, blocks */ 19 }; 20 21 struct xfs_fsmap_head { 22 uint32_t fmh_iflags; /* control flags */ 23 uint32_t fmh_oflags; /* output flags */ 24 unsigned int fmh_count; /* # of entries in array incl. input */ 25 unsigned int fmh_entries; /* # of entries filled in (output). */ 26 27 struct xfs_fsmap fmh_keys[2]; /* low and high keys */ 28 }; 29 30 void xfs_fsmap_from_internal(struct fsmap *dest, struct xfs_fsmap *src); 31 void xfs_fsmap_to_internal(struct xfs_fsmap *dest, struct fsmap *src); 32 33 /* fsmap to userspace formatter - copy to user & advance pointer */ 34 typedef int (*xfs_fsmap_format_t)(struct xfs_fsmap *, void *); 35 36 int xfs_getfsmap(struct xfs_mount *mp, struct xfs_fsmap_head *head, 37 xfs_fsmap_format_t formatter, void *arg); 38 39 #endif /* __XFS_FSMAP_H__ */ 40