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 11 struct xfs_bmbt_irec; 12 struct xfs_extent_free_item; 13 struct xfs_ifork; 14 struct xfs_inode; 15 struct xfs_mount; 16 struct xfs_trans; 17 struct xfs_bmalloca; 18 19 #ifdef CONFIG_XFS_RT 20 int 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 */ 26 static inline int 27 xfs_bmap_rtalloc(struct xfs_bmalloca *ap) 28 { 29 return -EFSCORRUPTED; 30 } 31 #endif /* CONFIG_XFS_RT */ 32 33 int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, 34 int whichfork, int *eof); 35 int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, 36 xfs_fileoff_t start_fsb, xfs_fileoff_t length); 37 38 struct 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 }; 44 int 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 */ 48 int 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); 52 void xfs_bmap_adjacent(struct xfs_bmalloca *ap); 53 int 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 */ 58 int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset, 59 xfs_off_t len, int alloc_type); 60 int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset, 61 xfs_off_t len); 62 int xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset, 63 xfs_off_t len); 64 int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset, 65 xfs_off_t len); 66 int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset, 67 xfs_off_t len); 68 69 /* EOF block manipulation functions */ 70 bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); 71 int xfs_free_eofblocks(struct xfs_inode *ip); 72 73 int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, 74 struct xfs_swapext *sx); 75 76 xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); 77 78 xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count); 79 int 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 83 #endif /* __XFS_BMAP_UTIL_H__ */ 84