1/*
 2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 3 * All Rights Reserved.
 4 *
 5 * This program is free software; you can redistribute it and/or
 6 * modify it under the terms of the GNU General Public License as
 7 * published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17 */
18#ifndef __XFS_BMAP_UTIL_H__
19#define	__XFS_BMAP_UTIL_H__
20
21/* Kernel only BMAP related definitions and functions */
22
23struct xfs_bmbt_irec;
24struct xfs_extent_free_item;
25struct xfs_ifork;
26struct xfs_inode;
27struct xfs_mount;
28struct xfs_trans;
29struct xfs_bmalloca;
30
31int	xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
32int	xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
33		     int whichfork, int *eof);
34int	xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
35		xfs_fileoff_t start_fsb, xfs_fileoff_t length);
36
37/* bmap to userspace formatter - copy to user & advance pointer */
38typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *);
39int	xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
40		xfs_bmap_format_t formatter, void *arg);
41
42/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
43int	xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
44			       struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
45			       int rt, int eof, int delay, int convert,
46			       xfs_fileoff_t *offp, xfs_extlen_t *lenp);
47void	xfs_bmap_adjacent(struct xfs_bmalloca *ap);
48int	xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
49			     int whichfork, struct xfs_bmbt_irec *rec,
50			     int *is_empty);
51
52/* preallocation and hole punch interface */
53int	xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
54			     xfs_off_t len, int alloc_type);
55int	xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
56			    xfs_off_t len);
57int	xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset,
58			    xfs_off_t len);
59int	xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
60				xfs_off_t len);
61int	xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
62				xfs_off_t len);
63
64/* EOF block manipulation functions */
65bool	xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
66int	xfs_free_eofblocks(struct xfs_inode *ip);
67
68int	xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
69			 struct xfs_swapext *sx);
70
71xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
72
73#endif	/* __XFS_BMAP_UTIL_H__ */