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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifs_unicode.c | |
3 | * | |
e89dc920 | 4 | * Copyright (c) International Business Machines Corp., 2000,2005 |
1da177e4 LT |
5 | * Modified by Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
221601c3 | 9 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 10 | * (at your option) any later version. |
221601c3 | 11 | * |
1da177e4 LT |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
221601c3 | 18 | * along with this program; if not, write to the Free Software |
1da177e4 LT |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
20 | */ | |
21 | #include <linux/fs.h> | |
22 | #include "cifs_unicode.h" | |
23 | #include "cifs_uniupr.h" | |
24 | #include "cifspdu.h" | |
3979877e | 25 | #include "cifsglob.h" |
1da177e4 LT |
26 | #include "cifs_debug.h" |
27 | ||
28 | /* | |
29 | * NAME: cifs_strfromUCS() | |
30 | * | |
31 | * FUNCTION: Convert little-endian unicode string to character string | |
32 | * | |
33 | */ | |
34 | int | |
221601c3 | 35 | cifs_strfromUCS_le(char *to, const __le16 * from, |
1da177e4 LT |
36 | int len, const struct nls_table *codepage) |
37 | { | |
38 | int i; | |
39 | int outlen = 0; | |
40 | ||
41 | for (i = 0; (i < len) && from[i]; i++) { | |
42 | int charlen; | |
43 | /* 2.4.0 kernel or greater */ | |
44 | charlen = | |
45 | codepage->uni2char(le16_to_cpu(from[i]), &to[outlen], | |
46 | NLS_MAX_CHARSET_SIZE); | |
47 | if (charlen > 0) { | |
48 | outlen += charlen; | |
49 | } else { | |
50 | to[outlen++] = '?'; | |
51 | } | |
52 | } | |
53 | to[outlen] = 0; | |
54 | return outlen; | |
55 | } | |
56 | ||
57 | /* | |
58 | * NAME: cifs_strtoUCS() | |
59 | * | |
60 | * FUNCTION: Convert character string to unicode string | |
61 | * | |
62 | */ | |
63 | int | |
e89dc920 | 64 | cifs_strtoUCS(__le16 * to, const char *from, int len, |
1da177e4 LT |
65 | const struct nls_table *codepage) |
66 | { | |
67 | int charlen; | |
68 | int i; | |
221601c3 | 69 | wchar_t * wchar_to = (wchar_t *)to; /* needed to quiet sparse */ |
1da177e4 LT |
70 | |
71 | for (i = 0; len && *from; i++, from += charlen, len -= charlen) { | |
72 | ||
73 | /* works for 2.4.0 kernel or later */ | |
e89dc920 | 74 | charlen = codepage->char2uni(from, len, &wchar_to[i]); |
1da177e4 LT |
75 | if (charlen < 1) { |
76 | cERROR(1, | |
3a9f462f SF |
77 | ("strtoUCS: char2uni of %d returned %d", |
78 | (int)*from, charlen)); | |
69114089 | 79 | /* A question mark */ |
e89dc920 | 80 | to[i] = cpu_to_le16(0x003f); |
1da177e4 | 81 | charlen = 1; |
221601c3 | 82 | } else |
e89dc920 | 83 | to[i] = cpu_to_le16(wchar_to[i]); |
1da177e4 LT |
84 | |
85 | } | |
86 | ||
87 | to[i] = 0; | |
88 | return i; | |
89 | } | |
90 |