77 lines · c
1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * cifs_unicode: Unicode kernel case support4 *5 * Function:6 * Convert a unicode character to upper or lower case using7 * compressed tables.8 *9 * Copyright (c) International Business Machines Corp., 2000,200910 *11 * Notes:12 * These APIs are based on the C library functions. The semantics13 * 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_H19#define _CIFS_UNICODE_H20 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 does28 * 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 is44 * encountered. We can only map using one of the mechanisms at a time45 * since otherwise readdir could return directory entries which we would46 * not be able to open47 *48 * NO_MAP_UNI_RSVD = do not perform any remapping of the character49 * 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 054#define SFM_MAP_UNI_RSVD 155#define SFU_MAP_UNI_RSVD 256 57#ifdef __KERNEL__58int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,59 const struct nls_table *cp, int map_type);60int cifs_utf16_bytes(const __le16 *from, int maxbytes,61 const struct nls_table *codepage);62int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);63char *cifs_strndup_from_utf16(const char *src, const int maxlen,64 const bool is_unicode,65 const struct nls_table *codepage);66extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,67 const struct nls_table *cp, int mapChars);68extern int cifs_remap(struct cifs_sb_info *cifs_sb);69extern __le16 *cifs_strndup_to_utf16(const char *src, const int maxlen,70 int *utf16_len, const struct nls_table *cp,71 int remap);72#endif73 74wchar_t cifs_toupper(wchar_t in);75 76#endif /* _CIFS_UNICODE_H */77