// 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 */
};

/* internal fsmap record format */
struct xfs_fsmap_irec {
        xfs_daddr_t     start_daddr;
        xfs_daddr_t     len_daddr;
        uint64_t        owner;          /* extent owner */
        uint64_t        offset;         /* offset within the owner */
        unsigned int    rm_flags;       /* rmap state flags */

        /*
         * rmapbt startblock corresponding to start_daddr, if the record came
         * from an rmap btree.
         */
        xfs_agblock_t   rec_key;
};

int xfs_ioc_getfsmap(struct xfs_inode *ip, struct fsmap_head __user *arg);

#endif /* __XFS_FSMAP_H__ */