linux/fs/xfs/xfs_fsmap.h
Darrick J. Wong 2ca7b9d7b8 xfs: move xfs_ioc_getfsmap out of xfs_ioctl.c
Move this function out of xfs_ioctl.c to reduce the clutter in there,
and make the entire getfsmap implementation self-contained in a single
file.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2024-09-01 08:58:19 -07:00

34 lines
977 B
C

// 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;
struct fsmap_head;
/* 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 */
};
int xfs_ioc_getfsmap(struct xfs_inode *ip, struct fsmap_head __user *arg);
#endif /* __XFS_FSMAP_H__ */