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-rw-r--r--fs/smb/client/cifs_unicode.h76
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diff --git a/fs/smb/client/cifs_unicode.h b/fs/smb/client/cifs_unicode.h
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+++ b/fs/smb/client/cifs_unicode.h
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * cifs_unicode: Unicode kernel case support
+ *
+ * Function:
+ * Convert a unicode character to upper or lower case using
+ * compressed tables.
+ *
+ * Copyright (c) International Business Machines Corp., 2000,2009
+ *
+ * Notes:
+ * These APIs are based on the C library functions. The semantics
+ * should match the C functions but with expanded size operands.
+ *
+ * The upper/lower functions are based on a table created by mkupr.
+ * This is a compressed table of upper and lower case conversion.
+ */
+#ifndef _CIFS_UNICODE_H
+#define _CIFS_UNICODE_H
+
+#include <asm/byteorder.h>
+#include <linux/types.h>
+#include <linux/nls.h>
+#include "../../nls/nls_ucs2_utils.h"
+
+/*
+ * Macs use an older "SFM" mapping of the symbols above. Fortunately it does
+ * not conflict (although almost does) with the mapping above.
+ */
+
+#define SFM_DOUBLEQUOTE ((__u16) 0xF020)
+#define SFM_ASTERISK ((__u16) 0xF021)
+#define SFM_QUESTION ((__u16) 0xF025)
+#define SFM_COLON ((__u16) 0xF022)
+#define SFM_GRTRTHAN ((__u16) 0xF024)
+#define SFM_LESSTHAN ((__u16) 0xF023)
+#define SFM_PIPE ((__u16) 0xF027)
+#define SFM_SLASH ((__u16) 0xF026)
+#define SFM_SPACE ((__u16) 0xF028)
+#define SFM_PERIOD ((__u16) 0xF029)
+
+/*
+ * Mapping mechanism to use when one of the seven reserved characters is
+ * encountered. We can only map using one of the mechanisms at a time
+ * since otherwise readdir could return directory entries which we would
+ * not be able to open
+ *
+ * NO_MAP_UNI_RSVD = do not perform any remapping of the character
+ * SFM_MAP_UNI_RSVD = map reserved characters using SFM scheme (MAC compatible)
+ * SFU_MAP_UNI_RSVD = map reserved characters ala SFU ("mapchars" option)
+ *
+ */
+#define NO_MAP_UNI_RSVD 0
+#define SFM_MAP_UNI_RSVD 1
+#define SFU_MAP_UNI_RSVD 2
+
+#ifdef __KERNEL__
+int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
+ const struct nls_table *cp, int map_type);
+int cifs_utf16_bytes(const __le16 *from, int maxbytes,
+ const struct nls_table *codepage);
+int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);
+char *cifs_strndup_from_utf16(const char *src, const int maxlen,
+ const bool is_unicode,
+ const struct nls_table *codepage);
+extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,
+ const struct nls_table *cp, int mapChars);
+extern int cifs_remap(struct cifs_sb_info *cifs_sb);
+extern __le16 *cifs_strndup_to_utf16(const char *src, const int maxlen,
+ int *utf16_len, const struct nls_table *cp,
+ int remap);
+#endif
+
+wchar_t cifs_toupper(wchar_t in);
+
+#endif /* _CIFS_UNICODE_H */