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