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
 9struct fsmap;
10struct fsmap_head;
11
12/* internal fsmap representation */
13struct xfs_fsmap {
14	dev_t		fmr_device;	/* device id */
15	uint32_t	fmr_flags;	/* mapping flags */
16	uint64_t	fmr_physical;	/* device offset of segment */
17	uint64_t	fmr_owner;	/* owner id */
18	xfs_fileoff_t	fmr_offset;	/* file offset of segment */
19	xfs_filblks_t	fmr_length;	/* length of segment, blocks */
20};
21
22struct xfs_fsmap_head {
23	uint32_t	fmh_iflags;	/* control flags */
24	uint32_t	fmh_oflags;	/* output flags */
25	unsigned int	fmh_count;	/* # of entries in array incl. input */
26	unsigned int	fmh_entries;	/* # of entries filled in (output). */
27
28	struct xfs_fsmap fmh_keys[2];	/* low and high keys */
29};
30
31/* internal fsmap record format */
32struct xfs_fsmap_irec {
33	xfs_daddr_t	start_daddr;
34	xfs_daddr_t	len_daddr;
35	uint64_t	owner;		/* extent owner */
36	uint64_t	offset;		/* offset within the owner */
37	unsigned int	rm_flags;	/* rmap state flags */
38
39	/*
40	 * rmapbt startblock corresponding to start_daddr, if the record came
41	 * from an rmap btree.
42	 */
43	xfs_agblock_t	rec_key;
44};
45
46int xfs_ioc_getfsmap(struct xfs_inode *ip, struct fsmap_head __user *arg);
47
48#endif /* __XFS_FSMAP_H__ */