1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 4 * All Rights Reserved.
 5 */
 6#ifndef __XFS_BMAP_UTIL_H__
 7#define	__XFS_BMAP_UTIL_H__
 8
 9/* Kernel only BMAP related definitions and functions */
10
11struct xfs_bmbt_irec;
12struct xfs_extent_free_item;
13struct xfs_ifork;
14struct xfs_inode;
15struct xfs_mount;
16struct xfs_trans;
17struct xfs_bmalloca;
18
19#ifdef CONFIG_XFS_RT
20int	xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
21#else /* !CONFIG_XFS_RT */
22/*
23 * Attempts to allocate RT extents when RT is disable indicates corruption and
24 * should trigger a shutdown.
25 */
26static inline int
27xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
28{
29	return -EFSCORRUPTED;
30}
31#endif /* CONFIG_XFS_RT */
32
33void	xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, int whichfork,
34		xfs_off_t start_byte, xfs_off_t end_byte);
35
36struct kgetbmap {
37	__s64		bmv_offset;	/* file offset of segment in blocks */
38	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
39	__s64		bmv_length;	/* length of segment, blocks	    */
40	__s32		bmv_oflags;	/* output flags */
41};
42int	xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
43		struct kgetbmap *out);
44
45/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
46int	xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
47			       struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
48			       int rt, int eof, int delay, int convert,
49			       xfs_fileoff_t *offp, xfs_extlen_t *lenp);
50bool	xfs_bmap_adjacent(struct xfs_bmalloca *ap);
51int	xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
52			     int whichfork, struct xfs_bmbt_irec *rec,
53			     int *is_empty);
54
55/* preallocation and hole punch interface */
56int	xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
57			     xfs_off_t len);
58int	xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
59			    xfs_off_t len);
60int	xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
61				xfs_off_t len);
62int	xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
63				xfs_off_t len);
64
65/* EOF block manipulation functions */
66bool	xfs_can_free_eofblocks(struct xfs_inode *ip);
67int	xfs_free_eofblocks(struct xfs_inode *ip);
68
69int	xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
70			 struct xfs_swapext *sx);
71
72xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
73
74xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
75int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
76			  int whichfork, xfs_extnum_t *nextents,
77			  xfs_filblks_t *count);
78
79int	xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
80			      xfs_off_t len);
81
82#endif	/* __XFS_BMAP_UTIL_H__ */