LXR linux/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
  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 */
  37