xfs_bmap_util.h 3.0 KB

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  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. /* Kernel only BMAP related definitions and functions */
  21. struct xfs_bmbt_irec;
  22. struct xfs_bmap_free_item;
  23. struct xfs_ifork;
  24. struct xfs_inode;
  25. struct xfs_mount;
  26. struct xfs_trans;
  27. struct xfs_bmalloca;
  28. int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
  29. int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
  30. int whichfork, int *eof);
  31. int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
  32. int whichfork, int *count);
  33. int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
  34. xfs_fileoff_t start_fsb, xfs_fileoff_t length);
  35. /* bmap to userspace formatter - copy to user & advance pointer */
  36. typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *);
  37. int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
  38. xfs_bmap_format_t formatter, void *arg);
  39. /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
  40. void xfs_bmap_del_free(struct xfs_bmap_free *flist,
  41. struct xfs_bmap_free_item *prev,
  42. struct xfs_bmap_free_item *free);
  43. int 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);
  47. void xfs_bmap_adjacent(struct xfs_bmalloca *ap);
  48. int 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. /* preallocation and hole punch interface */
  52. int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
  53. xfs_off_t len, int alloc_type);
  54. int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
  55. xfs_off_t len);
  56. int xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset,
  57. xfs_off_t len);
  58. int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
  59. xfs_off_t len);
  60. int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
  61. xfs_off_t len);
  62. /* EOF block manipulation functions */
  63. bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
  64. int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip,
  65. bool need_iolock);
  66. int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
  67. struct xfs_swapext *sx);
  68. xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
  69. #endif /* __XFS_BMAP_UTIL_H__ */