Root/fs/ntfs/collate.h

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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