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
33int	xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
34		     int whichfork, int *eof);
35int	xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
36		xfs_fileoff_t start_fsb, xfs_fileoff_t length);
37
38struct kgetbmap {
39	__s64		bmv_offset;	/* file offset of segment in blocks */
40	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
41	__s64		bmv_length;	/* length of segment, blocks	    */
42	__s32		bmv_oflags;	/* output flags */
43};
44int	xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
45		struct kgetbmap *out);
46
47/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
48int	xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
49			       struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
50			       int rt, int eof, int delay, int convert,
51			       xfs_fileoff_t *offp, xfs_extlen_t *lenp);
52void	xfs_bmap_adjacent(struct xfs_bmalloca *ap);
53int	xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
54			     int whichfork, struct xfs_bmbt_irec *rec,
55			     int *is_empty);
56
57/* preallocation and hole punch interface */
58int	xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
59			     xfs_off_t len, int alloc_type);
60int	xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
61			    xfs_off_t len);
62int	xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset,
63			    xfs_off_t len);
64int	xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
65				xfs_off_t len);
66int	xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
67				xfs_off_t len);
68
69/* EOF block manipulation functions */
70bool	xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
71int	xfs_free_eofblocks(struct xfs_inode *ip);
72
73int	xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
74			 struct xfs_swapext *sx);
75
76xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
77
78xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
79int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
80			  int whichfork, xfs_extnum_t *nextents,
81			  xfs_filblks_t *count);
82
83int	xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
84			      xfs_off_t len);
85
86#endif	/* __XFS_BMAP_UTIL_H__ */