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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*
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* fs/cifs/cifs_unicode.c
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*
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* Copyright (c) International Business Machines Corp., 2000,2005
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* Modified by Steve French (sfrench@us.ibm.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/fs.h>
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#include "cifs_unicode.h"
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#include "cifs_uniupr.h"
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifs_debug.h"
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/*
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* NAME: cifs_strfromUCS()
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*
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* FUNCTION: Convert little-endian unicode string to character string
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*
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*/
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int
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cifs_strfromUCS_le(char *to, const __le16 * from,
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int len, const struct nls_table *codepage)
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{
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int i;
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int outlen = 0;
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for (i = 0; (i < len) && from[i]; i++) {
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int charlen;
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/* 2.4.0 kernel or greater */
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charlen =
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codepage->uni2char(le16_to_cpu(from[i]), &to[outlen],
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NLS_MAX_CHARSET_SIZE);
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if (charlen > 0) {
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outlen += charlen;
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} else {
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to[outlen++] = '?';
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}
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}
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to[outlen] = 0;
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return outlen;
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}
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/*
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* NAME: cifs_strtoUCS()
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*
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* FUNCTION: Convert character string to unicode string
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*
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*/
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int
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cifs_strtoUCS(__le16 * to, const char *from, int len,
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const struct nls_table *codepage)
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{
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int charlen;
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int i;
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wchar_t * wchar_to = (wchar_t *)to; /* needed to quiet sparse */
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for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
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/* works for 2.4.0 kernel or later */
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charlen = codepage->char2uni(from, len, &wchar_to[i]);
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if (charlen < 1) {
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cERROR(1,
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("cifs_strtoUCS: char2uni returned %d",
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charlen));
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/* A question mark */
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to[i] = cpu_to_le16(0x003f);
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charlen = 1;
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} else
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to[i] = cpu_to_le16(wchar_to[i]);
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}
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to[i] = 0;
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return i;
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}
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