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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;
18struct xfs_zone_alloc_ctx;
19
20#ifdef CONFIG_XFS_RT
21int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
22#else /* !CONFIG_XFS_RT */
23/*
24 * Attempts to allocate RT extents when RT is disable indicates corruption and
25 * should trigger a shutdown.
26 */
27static inline int
28xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
29{
30 return -EFSCORRUPTED;
31}
32#endif /* CONFIG_XFS_RT */
33
34void xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, int whichfork,
35 xfs_off_t start_byte, xfs_off_t end_byte,
36 struct xfs_zone_alloc_ctx *ac);
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);
52bool 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);
60int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
61 xfs_off_t len, struct xfs_zone_alloc_ctx *ac);
62int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
63 xfs_off_t len, struct xfs_zone_alloc_ctx *ac);
64int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
65 xfs_off_t len);
66
67/* EOF block manipulation functions */
68bool xfs_can_free_eofblocks(struct xfs_inode *ip);
69int xfs_free_eofblocks(struct xfs_inode *ip);
70
71int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
72 struct xfs_swapext *sx);
73
74xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
75
76xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
77int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
78 int whichfork, xfs_extnum_t *nextents,
79 xfs_filblks_t *count);
80
81int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
82 xfs_off_t len);
83
84#endif /* __XFS_BMAP_UTIL_H__ */