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