| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2017 Oracle. All Rights Reserved. |
| * Author: Darrick J. Wong <darrick.wong@oracle.com> |
| */ |
| #ifndef __XFS_FSMAP_H__ |
| #define __XFS_FSMAP_H__ |
| |
| struct fsmap; |
| |
| /* internal fsmap representation */ |
| struct xfs_fsmap { |
| dev_t fmr_device; /* device id */ |
| uint32_t fmr_flags; /* mapping flags */ |
| uint64_t fmr_physical; /* device offset of segment */ |
| uint64_t fmr_owner; /* owner id */ |
| xfs_fileoff_t fmr_offset; /* file offset of segment */ |
| xfs_filblks_t fmr_length; /* length of segment, blocks */ |
| }; |
| |
| struct xfs_fsmap_head { |
| uint32_t fmh_iflags; /* control flags */ |
| uint32_t fmh_oflags; /* output flags */ |
| unsigned int fmh_count; /* # of entries in array incl. input */ |
| unsigned int fmh_entries; /* # of entries filled in (output). */ |
| |
| struct xfs_fsmap fmh_keys[2]; /* low and high keys */ |
| }; |
| |
| void xfs_fsmap_from_internal(struct fsmap *dest, struct xfs_fsmap *src); |
| void xfs_fsmap_to_internal(struct xfs_fsmap *dest, struct fsmap *src); |
| |
| /* fsmap to userspace formatter - copy to user & advance pointer */ |
| typedef int (*xfs_fsmap_format_t)(struct xfs_fsmap *, void *); |
| |
| int xfs_getfsmap(struct xfs_mount *mp, struct xfs_fsmap_head *head, |
| xfs_fsmap_format_t formatter, void *arg); |
| |
| #endif /* __XFS_FSMAP_H__ */ |