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_punch_delalloc_range(struct xfs_inode *ip, 34 xfs_off_t start_byte, xfs_off_t end_byte); 35 36 struct 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 }; 42 int 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 */ 46 int 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); 50 void xfs_bmap_adjacent(struct xfs_bmalloca *ap); 51 int 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 */ 56 int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset, 57 xfs_off_t len); 58 int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset, 59 xfs_off_t len); 60 int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset, 61 xfs_off_t len); 62 int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset, 63 xfs_off_t len); 64 65 /* EOF block manipulation functions */ 66 bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); 67 int xfs_free_eofblocks(struct xfs_inode *ip); 68 69 int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, 70 struct xfs_swapext *sx); 71 72 xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); 73 74 xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count); 75 int 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 79 int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset, 80 xfs_off_t len); 81 82 #endif /* __XFS_BMAP_UTIL_H__ */ 83