collate.h 1.7 KB

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  1. /*
  2. * collate.h - Defines for NTFS kernel collation handling. Part of the
  3. * Linux-NTFS project.
  4. *
  5. * Copyright (c) 2004 Anton Altaparmakov
  6. *
  7. * This program/include file is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License as published
  9. * by the Free Software Foundation; either version 2 of the License, or
  10. * (at your option) any later version.
  11. *
  12. * This program/include file is distributed in the hope that it will be
  13. * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  14. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program (in the main directory of the Linux-NTFS
  19. * distribution in the file COPYING); if not, write to the Free Software
  20. * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21. */
  22. #ifndef _LINUX_NTFS_COLLATE_H
  23. #define _LINUX_NTFS_COLLATE_H
  24. #include "types.h"
  25. #include "volume.h"
  26. static inline bool ntfs_is_collation_rule_supported(COLLATION_RULE cr) {
  27. int i;
  28. /*
  29. * FIXME: At the moment we only support COLLATION_BINARY and
  30. * COLLATION_NTOFS_ULONG, so we return false for everything else for
  31. * now.
  32. */
  33. if (unlikely(cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG))
  34. return false;
  35. i = le32_to_cpu(cr);
  36. if (likely(((i >= 0) && (i <= 0x02)) ||
  37. ((i >= 0x10) && (i <= 0x13))))
  38. return true;
  39. return false;
  40. }
  41. extern int ntfs_collate(ntfs_volume *vol, COLLATION_RULE cr,
  42. const void *data1, const int data1_len,
  43. const void *data2, const int data2_len);
  44. #endif /* _LINUX_NTFS_COLLATE_H */