1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * cifs_unicode: Unicode kernel case support
4 *
5 * Function:
6 * Convert a unicode character to upper or lower case using
7 * compressed tables.
8 *
9 * Copyright (c) International Business Machines Corp., 2000,2009
10 *
11 * Notes:
12 * These APIs are based on the C library functions. The semantics
13 * should match the C functions but with expanded size operands.
14 *
15 * The upper/lower functions are based on a table created by mkupr.
16 * This is a compressed table of upper and lower case conversion.
17 */
18 #ifndef _CIFS_UNICODE_H
19 #define _CIFS_UNICODE_H
20
21 #include <asm/byteorder.h>
22 #include <linux/types.h>
23 #include <linux/nls.h>
24 #include "../../nls/nls_ucs2_utils.h"
25
26 /*
27 * Macs use an older "SFM" mapping of the symbols above. Fortunately it does
28 * not conflict (although almost does) with the mapping above.
29 */
30
31 #define SFM_DOUBLEQUOTE ((__u16) 0xF020)
32 #define SFM_ASTERISK ((__u16) 0xF021)
33 #define SFM_QUESTION ((__u16) 0xF025)
34 #define SFM_COLON ((__u16) 0xF022)
35 #define SFM_GRTRTHAN ((__u16) 0xF024)
36 #define SFM_LESSTHAN ((__u16) 0xF023)
37 #define SFM_PIPE ((__u16) 0xF027)
38 #define SFM_SLASH ((__u16) 0xF026)
39 #define SFM_SPACE ((__u16) 0xF028)
40 #define SFM_PERIOD ((__u16) 0xF029)
41
42 /*
43 * Mapping mechanism to use when one of the seven reserved characters is
44 * encountered. We can only map using one of the mechanisms at a time
45 * since otherwise readdir could return directory entries which we would
46 * not be able to open
47 *
48 * NO_MAP_UNI_RSVD = do not perform any remapping of the character
49 * SFM_MAP_UNI_RSVD = map reserved characters using SFM scheme (MAC compatible)
50 * SFU_MAP_UNI_RSVD = map reserved characters ala SFU ("mapchars" option)
51 *
52 */
53 #define NO_MAP_UNI_RSVD 0
54 #define SFM_MAP_UNI_RSVD 1
55 #define SFU_MAP_UNI_RSVD 2
56
57 #ifdef __KERNEL__
58 int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
59 const struct nls_table *cp, int map_type);
60 int cifs_utf16_bytes(const __le16 *from, int maxbytes,
61 const struct nls_table *codepage);
62 int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);
63 char *cifs_strndup_from_utf16(const char *src, const int maxlen,
64 const bool is_unicode,
65 const struct nls_table *codepage);
66 extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,
67 const struct nls_table *cp, int mapChars);
68 extern int cifs_remap(struct cifs_sb_info *cifs_sb);
69 extern __le16 *cifs_strndup_to_utf16(const char *src, const int maxlen,
70 int *utf16_len, const struct nls_table *cp,
71 int remap);
72 #endif
73
74 wchar_t cifs_toupper(wchar_t in);
75
76 #endif /* _CIFS_UNICODE_H */
77
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.