Linux v2.6.15-rc7
[pohmelfs.git] / fs / cifs / cifs_unicode.c
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1 /*
2 * fs/cifs/cifs_unicode.c
4 * Copyright (c) International Business Machines Corp., 2000,2005
5 * Modified by Steve French (sfrench@us.ibm.com)
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
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
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.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/fs.h>
22 #include "cifs_unicode.h"
23 #include "cifs_uniupr.h"
24 #include "cifspdu.h"
25 #include "cifs_debug.h"
28 * NAME: cifs_strfromUCS()
30 * FUNCTION: Convert little-endian unicode string to character string
33 int
34 cifs_strfromUCS_le(char *to, const __le16 * from,
35 int len, const struct nls_table *codepage)
37 int i;
38 int outlen = 0;
40 for (i = 0; (i < len) && from[i]; i++) {
41 int charlen;
42 /* 2.4.0 kernel or greater */
43 charlen =
44 codepage->uni2char(le16_to_cpu(from[i]), &to[outlen],
45 NLS_MAX_CHARSET_SIZE);
46 if (charlen > 0) {
47 outlen += charlen;
48 } else {
49 to[outlen++] = '?';
52 to[outlen] = 0;
53 return outlen;
57 * NAME: cifs_strtoUCS()
59 * FUNCTION: Convert character string to unicode string
62 int
63 cifs_strtoUCS(__le16 * to, const char *from, int len,
64 const struct nls_table *codepage)
66 int charlen;
67 int i;
68 wchar_t * wchar_to = (wchar_t *)to; /* needed to quiet sparse */
70 for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
72 /* works for 2.4.0 kernel or later */
73 charlen = codepage->char2uni(from, len, &wchar_to[i]);
74 if (charlen < 1) {
75 cERROR(1,
76 ("cifs_strtoUCS: char2uni returned %d",
77 charlen));
78 /* A question mark */
79 to[i] = cpu_to_le16(0x003f);
80 charlen = 1;
81 } else
82 to[i] = cpu_to_le16(wchar_to[i]);
86 to[i] = 0;
87 return i;