fs/ntfs/collate.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * collate.h - Defines for NTFS kernel collation handling.  Part of the
   4  *             Linux-NTFS project.
   5  *
   6  * Copyright (c) 2004 Anton Altaparmakov
   7  */
   8
   9 #ifndef _LINUX_NTFS_COLLATE_H
  10 #define _LINUX_NTFS_COLLATE_H
  11
  12 #include "types.h"
  13 #include "volume.h"
  14
  15 static inline bool ntfs_is_collation_rule_supported(COLLATION_RULE cr) {
  16         int i;
  17
  18         /*
  19          * FIXME:  At the moment we only support COLLATION_BINARY and
  20          * COLLATION_NTOFS_ULONG, so we return false for everything else for
  21          * now.
  22          */
  23         if (unlikely(cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG))
  24                 return false;
  25         i = le32_to_cpu(cr);
  26         if (likely(((i >= 0) && (i <= 0x02)) ||
  27                         ((i >= 0x10) && (i <= 0x13))))
  28                 return true;
  29         return false;
  30 }
  31
  32 extern int ntfs_collate(ntfs_volume *vol, COLLATION_RULE cr,
  33                 const void *data1, const int data1_len,
  34                 const void *data2, const int data2_len);
  35
  36 #endif /* _LINUX_NTFS_COLLATE_H */