// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_BMAP_UTIL_H__
#define __XFS_BMAP_UTIL_H__

/* Kernel only BMAP related definitions and functions */

struct xfs_bmbt_irec;
struct xfs_extent_free_item;
struct xfs_ifork;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;
struct xfs_bmalloca;
struct xfs_zone_alloc_ctx;

#ifdef CONFIG_XFS_RT
int     xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
#else /* !CONFIG_XFS_RT */
/*
 * Attempts to allocate RT extents when RT is disable indicates corruption and
 * should trigger a shutdown.
 */
static inline int
xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
{
        return -EFSCORRUPTED;
}
#endif /* CONFIG_XFS_RT */

void    xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, int whichfork,
                xfs_off_t start_byte, xfs_off_t end_byte,
                struct xfs_zone_alloc_ctx *ac);

struct kgetbmap {
        __s64           bmv_offset;     /* file offset of segment in blocks */
        __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
        __s64           bmv_length;     /* length of segment, blocks        */
        __s32           bmv_oflags;     /* output flags */
};
int     xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
                struct kgetbmap *out);

/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
int     xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
                               struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
                               int rt, int eof, int delay, int convert,
                               xfs_fileoff_t *offp, xfs_extlen_t *lenp);
bool    xfs_bmap_adjacent(struct xfs_bmalloca *ap);
int     xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
                             int whichfork, struct xfs_bmbt_irec *rec,
                             int *is_empty);

/* preallocation and hole punch interface */
int     xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
                xfs_off_t len);
int     xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
                xfs_off_t len, struct xfs_zone_alloc_ctx *ac);
int     xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
                xfs_off_t len, struct xfs_zone_alloc_ctx *ac);
int     xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
                xfs_off_t len);

/* EOF block manipulation functions */
bool    xfs_can_free_eofblocks(struct xfs_inode *ip);
int     xfs_free_eofblocks(struct xfs_inode *ip);

int     xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
                         struct xfs_swapext *sx);

xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);

xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
                          int whichfork, xfs_extnum_t *nextents,
                          xfs_filblks_t *count);

int     xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
                              xfs_off_t len);

#endif  /* __XFS_BMAP_UTIL_H__ */