linux/fs/ntfs/collate.h
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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
  23#ifndef _LINUX_NTFS_COLLATE_H
  24#define _LINUX_NTFS_COLLATE_H
  25
  26#include "types.h"
  27#include "volume.h"
  28
  29static inline bool ntfs_is_collation_rule_supported(COLLATION_RULE cr) {
  30        int i;
  31
  32        /*
  33         * FIXME:  At the moment we only support COLLATION_BINARY and
  34         * COLLATION_NTOFS_ULONG, so we return false for everything else for
  35         * now.
  36         */
  37        if (unlikely(cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG))
  38                return false;
  39        i = le32_to_cpu(cr);
  40        if (likely(((i >= 0) && (i <= 0x02)) ||
  41                        ((i >= 0x10) && (i <= 0x13))))
  42                return true;
  43        return false;
  44}
  45
  46extern int ntfs_collate(ntfs_volume *vol, COLLATION_RULE cr,
  47                const void *data1, const int data1_len,
  48                const void *data2, const int data2_len);
  49
  50#endif /* _LINUX_NTFS_COLLATE_H */
  51
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