[linux.git] / fs / xfs / xfs_fsmap.h

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2017 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <[email protected]>
 */
#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__ */
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0+
e89c0413 DW	2	/*
e89c0413 DW	3	* Copyright (C) 2017 Oracle. All Rights Reserved.
e89c0413	4	* Author: Darrick J. Wong <[email protected]>
e89c0413 DW	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__ */