| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
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| 4 | * All Rights Reserved. |
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| 5 | */ |
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| 6 | #ifndef __XFS_BMAP_UTIL_H__ |
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| 7 | #define __XFS_BMAP_UTIL_H__ |
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| 8 | |
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| 9 | /* Kernel only BMAP related definitions and functions */ |
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| 10 | |
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| 11 | struct xfs_bmbt_irec; |
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| 12 | struct xfs_extent_free_item; |
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| 13 | struct xfs_ifork; |
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| 14 | struct xfs_inode; |
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| 15 | struct xfs_mount; |
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| 16 | struct xfs_trans; |
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| 17 | struct xfs_bmalloca; |
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| 18 | |
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| 19 | #ifdef CONFIG_XFS_RT |
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| 20 | int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); |
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| 21 | #else /* !CONFIG_XFS_RT */ |
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| 22 | /* |
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| 23 | * Attempts to allocate RT extents when RT is disable indicates corruption and |
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| 24 | * should trigger a shutdown. |
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| 25 | */ |
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| 26 | static inline int |
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| 27 | xfs_bmap_rtalloc(struct xfs_bmalloca *ap) |
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| 28 | { |
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| 29 | return -EFSCORRUPTED; |
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| 30 | } |
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| 31 | #endif /* CONFIG_XFS_RT */ |
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| 32 | |
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| 33 | int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, |
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| 34 | xfs_off_t start_byte, xfs_off_t end_byte); |
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| 35 | |
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| 36 | struct kgetbmap { |
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| 37 | __s64 bmv_offset; /* file offset of segment in blocks */ |
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| 38 | __s64 bmv_block; /* starting block (64-bit daddr_t) */ |
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| 39 | __s64 bmv_length; /* length of segment, blocks */ |
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| 40 | __s32 bmv_oflags; /* output flags */ |
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| 41 | }; |
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| 42 | int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, |
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| 43 | struct kgetbmap *out); |
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| 44 | |
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| 45 | /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ |
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| 46 | int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp, |
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| 47 | struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz, |
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| 48 | int rt, int eof, int delay, int convert, |
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| 49 | xfs_fileoff_t *offp, xfs_extlen_t *lenp); |
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| 50 | void xfs_bmap_adjacent(struct xfs_bmalloca *ap); |
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| 51 | int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip, |
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| 52 | int whichfork, struct xfs_bmbt_irec *rec, |
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| 53 | int *is_empty); |
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| 54 | |
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| 55 | /* preallocation and hole punch interface */ |
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| 56 | int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset, |
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| 57 | xfs_off_t len); |
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| 58 | int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset, |
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| 59 | xfs_off_t len); |
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| 60 | int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset, |
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| 61 | xfs_off_t len); |
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| 62 | int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset, |
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| 63 | xfs_off_t len); |
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| 64 | |
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| 65 | /* EOF block manipulation functions */ |
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| 66 | bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); |
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| 67 | int xfs_free_eofblocks(struct xfs_inode *ip); |
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| 68 | |
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| 69 | int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, |
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| 70 | struct xfs_swapext *sx); |
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| 71 | |
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| 72 | xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); |
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| 73 | |
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| 74 | xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count); |
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| 75 | int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, |
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| 76 | int whichfork, xfs_extnum_t *nextents, |
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| 77 | xfs_filblks_t *count); |
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| 78 | |
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| 79 | int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset, |
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| 80 | xfs_off_t len); |
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| 81 | |
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| 82 | #endif /* __XFS_BMAP_UTIL_H__ */ |
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| 83 | |
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