mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 22:21:40 +00:00
63f83c9fcf
Removed trailing spaces & tabs, and spaces preceding tabs. Also a couple very minor comment cleanups. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> (cherry picked from f74156539964d7b3d5164fdf8848e6a682f75b97 commit)
139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/*
|
|
* Copyright (C) International Business Machines Corp., 2000-2004
|
|
*
|
|
* 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 <linux/slab.h>
|
|
#include "jfs_incore.h"
|
|
#include "jfs_filsys.h"
|
|
#include "jfs_unicode.h"
|
|
#include "jfs_debug.h"
|
|
|
|
/*
|
|
* NAME: jfs_strfromUCS()
|
|
*
|
|
* FUNCTION: Convert little-endian unicode string to character string
|
|
*
|
|
*/
|
|
int jfs_strfromUCS_le(char *to, const __le16 * from,
|
|
int len, struct nls_table *codepage)
|
|
{
|
|
int i;
|
|
int outlen = 0;
|
|
static int warn_again = 5; /* Only warn up to 5 times total */
|
|
int warn = !!warn_again; /* once per string */
|
|
|
|
if (codepage) {
|
|
for (i = 0; (i < len) && from[i]; i++) {
|
|
int charlen;
|
|
charlen =
|
|
codepage->uni2char(le16_to_cpu(from[i]),
|
|
&to[outlen],
|
|
NLS_MAX_CHARSET_SIZE);
|
|
if (charlen > 0)
|
|
outlen += charlen;
|
|
else
|
|
to[outlen++] = '?';
|
|
}
|
|
} else {
|
|
for (i = 0; (i < len) && from[i]; i++) {
|
|
if (unlikely(le16_to_cpu(from[i]) & 0xff00)) {
|
|
to[i] = '?';
|
|
if (unlikely(warn)) {
|
|
warn--;
|
|
warn_again--;
|
|
printk(KERN_ERR
|
|
"non-latin1 character 0x%x found in JFS file name\n",
|
|
le16_to_cpu(from[i]));
|
|
printk(KERN_ERR
|
|
"mount with iocharset=utf8 to access\n");
|
|
}
|
|
|
|
}
|
|
else
|
|
to[i] = (char) (le16_to_cpu(from[i]));
|
|
}
|
|
outlen = i;
|
|
}
|
|
to[outlen] = 0;
|
|
return outlen;
|
|
}
|
|
|
|
/*
|
|
* NAME: jfs_strtoUCS()
|
|
*
|
|
* FUNCTION: Convert character string to unicode string
|
|
*
|
|
*/
|
|
static int jfs_strtoUCS(wchar_t * to, const unsigned char *from, int len,
|
|
struct nls_table *codepage)
|
|
{
|
|
int charlen;
|
|
int i;
|
|
|
|
if (codepage) {
|
|
for (i = 0; len && *from; i++, from += charlen, len -= charlen)
|
|
{
|
|
charlen = codepage->char2uni(from, len, &to[i]);
|
|
if (charlen < 1) {
|
|
jfs_err("jfs_strtoUCS: char2uni returned %d.",
|
|
charlen);
|
|
jfs_err("charset = %s, char = 0x%x",
|
|
codepage->charset, *from);
|
|
return charlen;
|
|
}
|
|
}
|
|
} else {
|
|
for (i = 0; (i < len) && from[i]; i++)
|
|
to[i] = (wchar_t) from[i];
|
|
}
|
|
|
|
to[i] = 0;
|
|
return i;
|
|
}
|
|
|
|
/*
|
|
* NAME: get_UCSname()
|
|
*
|
|
* FUNCTION: Allocate and translate to unicode string
|
|
*
|
|
*/
|
|
int get_UCSname(struct component_name * uniName, struct dentry *dentry)
|
|
{
|
|
struct nls_table *nls_tab = JFS_SBI(dentry->d_sb)->nls_tab;
|
|
int length = dentry->d_name.len;
|
|
|
|
if (length > JFS_NAME_MAX)
|
|
return -ENAMETOOLONG;
|
|
|
|
uniName->name =
|
|
kmalloc((length + 1) * sizeof(wchar_t), GFP_NOFS);
|
|
|
|
if (uniName->name == NULL)
|
|
return -ENOMEM;
|
|
|
|
uniName->namlen = jfs_strtoUCS(uniName->name, dentry->d_name.name,
|
|
length, nls_tab);
|
|
|
|
if (uniName->namlen < 0) {
|
|
kfree(uniName->name);
|
|
return uniName->namlen;
|
|
}
|
|
|
|
return 0;
|
|
}
|