| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| #ifndef __XFS_BMAP_UTIL_H__ |
| #define __XFS_BMAP_UTIL_H__ |
| |
| /* Kernel only BMAP related definitions and functions */ |
| |
| struct xfs_bmbt_irec; |
| struct xfs_extent_free_item; |
| struct xfs_ifork; |
| struct xfs_inode; |
| struct xfs_mount; |
| struct xfs_trans; |
| struct xfs_bmalloca; |
| |
| #ifdef CONFIG_XFS_RT |
| int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); |
| #else /* !CONFIG_XFS_RT */ |
| /* |
| * Attempts to allocate RT extents when RT is disable indicates corruption and |
| * should trigger a shutdown. |
| */ |
| static inline int |
| xfs_bmap_rtalloc(struct xfs_bmalloca *ap) |
| { |
| return -EFSCORRUPTED; |
| } |
| #endif /* CONFIG_XFS_RT */ |
| |
| void xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, |
| xfs_off_t start_byte, xfs_off_t end_byte); |
| |
| struct kgetbmap { |
| __s64 bmv_offset; /* file offset of segment in blocks */ |
| __s64 bmv_block; /* starting block (64-bit daddr_t) */ |
| __s64 bmv_length; /* length of segment, blocks */ |
| __s32 bmv_oflags; /* output flags */ |
| }; |
| int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, |
| struct kgetbmap *out); |
| |
| /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ |
| int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp, |
| struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz, |
| int rt, int eof, int delay, int convert, |
| xfs_fileoff_t *offp, xfs_extlen_t *lenp); |
| bool xfs_bmap_adjacent(struct xfs_bmalloca *ap); |
| int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip, |
| int whichfork, struct xfs_bmbt_irec *rec, |
| int *is_empty); |
| |
| /* preallocation and hole punch interface */ |
| int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset, |
| xfs_off_t len); |
| int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset, |
| xfs_off_t len); |
| int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset, |
| xfs_off_t len); |
| int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset, |
| xfs_off_t len); |
| |
| /* EOF block manipulation functions */ |
| bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); |
| int xfs_free_eofblocks(struct xfs_inode *ip); |
| |
| int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, |
| struct xfs_swapext *sx); |
| |
| xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); |
| |
| xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count); |
| int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, |
| int whichfork, xfs_extnum_t *nextents, |
| xfs_filblks_t *count); |
| |
| int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset, |
| xfs_off_t len); |
| |
| #endif /* __XFS_BMAP_UTIL_H__ */ |