1 files changed, 36 insertions, 0 deletions
diff --git a/fs/ntfs/collate.h b/fs/ntfs/collate.h
new file mode 100644
index 0000000000..f2255619b4
--- /dev/null
+++ b/fs/ntfs/collate.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * collate.h - Defines for NTFS kernel collation handling.  Part of the
+ *	       Linux-NTFS project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ */
+
+#ifndef _LINUX_NTFS_COLLATE_H
+#define _LINUX_NTFS_COLLATE_H
+
+#include "types.h"
+#include "volume.h"
+
+static inline bool ntfs_is_collation_rule_supported(COLLATION_RULE cr) {
+	int i;
+
+	/*
+	 * FIXME:  At the moment we only support COLLATION_BINARY and
+	 * COLLATION_NTOFS_ULONG, so we return false for everything else for
+	 * now.
+	 */
+	if (unlikely(cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG))
+		return false;
+	i = le32_to_cpu(cr);
+	if (likely(((i >= 0) && (i <= 0x02)) ||
+			((i >= 0x10) && (i <= 0x13))))
+		return true;
+	return false;
+}
+
+extern int ntfs_collate(ntfs_volume *vol, COLLATION_RULE cr,
+		const void *data1, const int data1_len,
+		const void *data2, const int data2_len);
+
+#endif /* _LINUX_NTFS_COLLATE_H */