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
15static 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
32extern 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 */