mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
905c02acbd
utf8_wcstombs forgot to include one-byte UTF-8 characters when calculating the output buffer size, i.e., theoretically, it was possible to overflow the output buffer with an input string that contains enough ASCII characters. In practice, this was no problem because the only user so far (VFAT) always uses a big enough output buffer. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
476 lines
14 KiB
C
476 lines
14 KiB
C
/*
|
|
* linux/fs/nls/nls_base.c
|
|
*
|
|
* Native language support--charsets and unicode translations.
|
|
* By Gordon Chaffee 1996, 1997
|
|
*
|
|
* Unicode based case conversion 1999 by Wolfram Pienkoss
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
#include <linux/nls.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/kmod.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
static struct nls_table default_table;
|
|
static struct nls_table *tables = &default_table;
|
|
static DEFINE_SPINLOCK(nls_lock);
|
|
|
|
/*
|
|
* Sample implementation from Unicode home page.
|
|
* http://www.stonehand.com/unicode/standard/fss-utf.html
|
|
*/
|
|
struct utf8_table {
|
|
int cmask;
|
|
int cval;
|
|
int shift;
|
|
long lmask;
|
|
long lval;
|
|
};
|
|
|
|
static const struct utf8_table utf8_table[] =
|
|
{
|
|
{0x80, 0x00, 0*6, 0x7F, 0, /* 1 byte sequence */},
|
|
{0xE0, 0xC0, 1*6, 0x7FF, 0x80, /* 2 byte sequence */},
|
|
{0xF0, 0xE0, 2*6, 0xFFFF, 0x800, /* 3 byte sequence */},
|
|
{0xF8, 0xF0, 3*6, 0x1FFFFF, 0x10000, /* 4 byte sequence */},
|
|
{0xFC, 0xF8, 4*6, 0x3FFFFFF, 0x200000, /* 5 byte sequence */},
|
|
{0xFE, 0xFC, 5*6, 0x7FFFFFFF, 0x4000000, /* 6 byte sequence */},
|
|
{0, /* end of table */}
|
|
};
|
|
|
|
int
|
|
utf8_mbtowc(wchar_t *p, const __u8 *s, int n)
|
|
{
|
|
long l;
|
|
int c0, c, nc;
|
|
const struct utf8_table *t;
|
|
|
|
nc = 0;
|
|
c0 = *s;
|
|
l = c0;
|
|
for (t = utf8_table; t->cmask; t++) {
|
|
nc++;
|
|
if ((c0 & t->cmask) == t->cval) {
|
|
l &= t->lmask;
|
|
if (l < t->lval)
|
|
return -1;
|
|
*p = l;
|
|
return nc;
|
|
}
|
|
if (n <= nc)
|
|
return -1;
|
|
s++;
|
|
c = (*s ^ 0x80) & 0xFF;
|
|
if (c & 0xC0)
|
|
return -1;
|
|
l = (l << 6) | c;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
utf8_mbstowcs(wchar_t *pwcs, const __u8 *s, int n)
|
|
{
|
|
__u16 *op;
|
|
const __u8 *ip;
|
|
int size;
|
|
|
|
op = pwcs;
|
|
ip = s;
|
|
while (*ip && n > 0) {
|
|
if (*ip & 0x80) {
|
|
size = utf8_mbtowc(op, ip, n);
|
|
if (size == -1) {
|
|
/* Ignore character and move on */
|
|
ip++;
|
|
n--;
|
|
} else {
|
|
op++;
|
|
ip += size;
|
|
n -= size;
|
|
}
|
|
} else {
|
|
*op++ = *ip++;
|
|
n--;
|
|
}
|
|
}
|
|
return (op - pwcs);
|
|
}
|
|
|
|
int
|
|
utf8_wctomb(__u8 *s, wchar_t wc, int maxlen)
|
|
{
|
|
long l;
|
|
int c, nc;
|
|
const struct utf8_table *t;
|
|
|
|
if (!s)
|
|
return 0;
|
|
|
|
l = wc;
|
|
nc = 0;
|
|
for (t = utf8_table; t->cmask && maxlen; t++, maxlen--) {
|
|
nc++;
|
|
if (l <= t->lmask) {
|
|
c = t->shift;
|
|
*s = t->cval | (l >> c);
|
|
while (c > 0) {
|
|
c -= 6;
|
|
s++;
|
|
*s = 0x80 | ((l >> c) & 0x3F);
|
|
}
|
|
return nc;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
utf8_wcstombs(__u8 *s, const wchar_t *pwcs, int maxlen)
|
|
{
|
|
const __u16 *ip;
|
|
__u8 *op;
|
|
int size;
|
|
|
|
op = s;
|
|
ip = pwcs;
|
|
while (*ip && maxlen > 0) {
|
|
if (*ip > 0x7f) {
|
|
size = utf8_wctomb(op, *ip, maxlen);
|
|
if (size == -1) {
|
|
/* Ignore character and move on */
|
|
} else {
|
|
op += size;
|
|
maxlen -= size;
|
|
}
|
|
} else {
|
|
*op++ = (__u8) *ip;
|
|
maxlen--;
|
|
}
|
|
ip++;
|
|
}
|
|
return (op - s);
|
|
}
|
|
|
|
int register_nls(struct nls_table * nls)
|
|
{
|
|
struct nls_table ** tmp = &tables;
|
|
|
|
if (nls->next)
|
|
return -EBUSY;
|
|
|
|
spin_lock(&nls_lock);
|
|
while (*tmp) {
|
|
if (nls == *tmp) {
|
|
spin_unlock(&nls_lock);
|
|
return -EBUSY;
|
|
}
|
|
tmp = &(*tmp)->next;
|
|
}
|
|
nls->next = tables;
|
|
tables = nls;
|
|
spin_unlock(&nls_lock);
|
|
return 0;
|
|
}
|
|
|
|
int unregister_nls(struct nls_table * nls)
|
|
{
|
|
struct nls_table ** tmp = &tables;
|
|
|
|
spin_lock(&nls_lock);
|
|
while (*tmp) {
|
|
if (nls == *tmp) {
|
|
*tmp = nls->next;
|
|
spin_unlock(&nls_lock);
|
|
return 0;
|
|
}
|
|
tmp = &(*tmp)->next;
|
|
}
|
|
spin_unlock(&nls_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static struct nls_table *find_nls(char *charset)
|
|
{
|
|
struct nls_table *nls;
|
|
spin_lock(&nls_lock);
|
|
for (nls = tables; nls; nls = nls->next) {
|
|
if (!strcmp(nls->charset, charset))
|
|
break;
|
|
if (nls->alias && !strcmp(nls->alias, charset))
|
|
break;
|
|
}
|
|
if (nls && !try_module_get(nls->owner))
|
|
nls = NULL;
|
|
spin_unlock(&nls_lock);
|
|
return nls;
|
|
}
|
|
|
|
struct nls_table *load_nls(char *charset)
|
|
{
|
|
return try_then_request_module(find_nls(charset), "nls_%s", charset);
|
|
}
|
|
|
|
void unload_nls(struct nls_table *nls)
|
|
{
|
|
module_put(nls->owner);
|
|
}
|
|
|
|
static const wchar_t charset2uni[256] = {
|
|
/* 0x00*/
|
|
0x0000, 0x0001, 0x0002, 0x0003,
|
|
0x0004, 0x0005, 0x0006, 0x0007,
|
|
0x0008, 0x0009, 0x000a, 0x000b,
|
|
0x000c, 0x000d, 0x000e, 0x000f,
|
|
/* 0x10*/
|
|
0x0010, 0x0011, 0x0012, 0x0013,
|
|
0x0014, 0x0015, 0x0016, 0x0017,
|
|
0x0018, 0x0019, 0x001a, 0x001b,
|
|
0x001c, 0x001d, 0x001e, 0x001f,
|
|
/* 0x20*/
|
|
0x0020, 0x0021, 0x0022, 0x0023,
|
|
0x0024, 0x0025, 0x0026, 0x0027,
|
|
0x0028, 0x0029, 0x002a, 0x002b,
|
|
0x002c, 0x002d, 0x002e, 0x002f,
|
|
/* 0x30*/
|
|
0x0030, 0x0031, 0x0032, 0x0033,
|
|
0x0034, 0x0035, 0x0036, 0x0037,
|
|
0x0038, 0x0039, 0x003a, 0x003b,
|
|
0x003c, 0x003d, 0x003e, 0x003f,
|
|
/* 0x40*/
|
|
0x0040, 0x0041, 0x0042, 0x0043,
|
|
0x0044, 0x0045, 0x0046, 0x0047,
|
|
0x0048, 0x0049, 0x004a, 0x004b,
|
|
0x004c, 0x004d, 0x004e, 0x004f,
|
|
/* 0x50*/
|
|
0x0050, 0x0051, 0x0052, 0x0053,
|
|
0x0054, 0x0055, 0x0056, 0x0057,
|
|
0x0058, 0x0059, 0x005a, 0x005b,
|
|
0x005c, 0x005d, 0x005e, 0x005f,
|
|
/* 0x60*/
|
|
0x0060, 0x0061, 0x0062, 0x0063,
|
|
0x0064, 0x0065, 0x0066, 0x0067,
|
|
0x0068, 0x0069, 0x006a, 0x006b,
|
|
0x006c, 0x006d, 0x006e, 0x006f,
|
|
/* 0x70*/
|
|
0x0070, 0x0071, 0x0072, 0x0073,
|
|
0x0074, 0x0075, 0x0076, 0x0077,
|
|
0x0078, 0x0079, 0x007a, 0x007b,
|
|
0x007c, 0x007d, 0x007e, 0x007f,
|
|
/* 0x80*/
|
|
0x0080, 0x0081, 0x0082, 0x0083,
|
|
0x0084, 0x0085, 0x0086, 0x0087,
|
|
0x0088, 0x0089, 0x008a, 0x008b,
|
|
0x008c, 0x008d, 0x008e, 0x008f,
|
|
/* 0x90*/
|
|
0x0090, 0x0091, 0x0092, 0x0093,
|
|
0x0094, 0x0095, 0x0096, 0x0097,
|
|
0x0098, 0x0099, 0x009a, 0x009b,
|
|
0x009c, 0x009d, 0x009e, 0x009f,
|
|
/* 0xa0*/
|
|
0x00a0, 0x00a1, 0x00a2, 0x00a3,
|
|
0x00a4, 0x00a5, 0x00a6, 0x00a7,
|
|
0x00a8, 0x00a9, 0x00aa, 0x00ab,
|
|
0x00ac, 0x00ad, 0x00ae, 0x00af,
|
|
/* 0xb0*/
|
|
0x00b0, 0x00b1, 0x00b2, 0x00b3,
|
|
0x00b4, 0x00b5, 0x00b6, 0x00b7,
|
|
0x00b8, 0x00b9, 0x00ba, 0x00bb,
|
|
0x00bc, 0x00bd, 0x00be, 0x00bf,
|
|
/* 0xc0*/
|
|
0x00c0, 0x00c1, 0x00c2, 0x00c3,
|
|
0x00c4, 0x00c5, 0x00c6, 0x00c7,
|
|
0x00c8, 0x00c9, 0x00ca, 0x00cb,
|
|
0x00cc, 0x00cd, 0x00ce, 0x00cf,
|
|
/* 0xd0*/
|
|
0x00d0, 0x00d1, 0x00d2, 0x00d3,
|
|
0x00d4, 0x00d5, 0x00d6, 0x00d7,
|
|
0x00d8, 0x00d9, 0x00da, 0x00db,
|
|
0x00dc, 0x00dd, 0x00de, 0x00df,
|
|
/* 0xe0*/
|
|
0x00e0, 0x00e1, 0x00e2, 0x00e3,
|
|
0x00e4, 0x00e5, 0x00e6, 0x00e7,
|
|
0x00e8, 0x00e9, 0x00ea, 0x00eb,
|
|
0x00ec, 0x00ed, 0x00ee, 0x00ef,
|
|
/* 0xf0*/
|
|
0x00f0, 0x00f1, 0x00f2, 0x00f3,
|
|
0x00f4, 0x00f5, 0x00f6, 0x00f7,
|
|
0x00f8, 0x00f9, 0x00fa, 0x00fb,
|
|
0x00fc, 0x00fd, 0x00fe, 0x00ff,
|
|
};
|
|
|
|
static const unsigned char page00[256] = {
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
|
|
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
|
|
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
|
|
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
|
|
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
|
|
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
|
|
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
|
|
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
|
|
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
|
|
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
|
|
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
|
|
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
|
|
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
|
|
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
|
|
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
|
|
|
|
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
|
|
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
|
|
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
|
|
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
|
|
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
|
|
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
|
|
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
|
|
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
|
|
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
|
|
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
|
|
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
|
|
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
|
|
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
|
|
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
|
|
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
|
|
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
|
|
};
|
|
|
|
static const unsigned char *const page_uni2charset[256] = {
|
|
page00
|
|
};
|
|
|
|
static const unsigned char charset2lower[256] = {
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
|
|
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
|
|
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
|
|
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
|
|
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
|
|
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
|
|
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
|
|
0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */
|
|
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */
|
|
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */
|
|
0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
|
|
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
|
|
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
|
|
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
|
|
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
|
|
|
|
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
|
|
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
|
|
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
|
|
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
|
|
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
|
|
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
|
|
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
|
|
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
|
|
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
|
|
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
|
|
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
|
|
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
|
|
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
|
|
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
|
|
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
|
|
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
|
|
};
|
|
|
|
static const unsigned char charset2upper[256] = {
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
|
|
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
|
|
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
|
|
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
|
|
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
|
|
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
|
|
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
|
|
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
|
|
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
|
|
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
|
|
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
|
|
0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */
|
|
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */
|
|
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */
|
|
0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
|
|
|
|
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
|
|
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
|
|
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
|
|
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
|
|
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
|
|
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
|
|
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
|
|
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
|
|
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
|
|
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
|
|
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
|
|
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
|
|
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
|
|
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
|
|
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
|
|
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
|
|
};
|
|
|
|
|
|
static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
|
|
{
|
|
const unsigned char *uni2charset;
|
|
unsigned char cl = uni & 0x00ff;
|
|
unsigned char ch = (uni & 0xff00) >> 8;
|
|
|
|
if (boundlen <= 0)
|
|
return -ENAMETOOLONG;
|
|
|
|
uni2charset = page_uni2charset[ch];
|
|
if (uni2charset && uni2charset[cl])
|
|
out[0] = uni2charset[cl];
|
|
else
|
|
return -EINVAL;
|
|
return 1;
|
|
}
|
|
|
|
static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
|
|
{
|
|
*uni = charset2uni[*rawstring];
|
|
if (*uni == 0x0000)
|
|
return -EINVAL;
|
|
return 1;
|
|
}
|
|
|
|
static struct nls_table default_table = {
|
|
.charset = "default",
|
|
.uni2char = uni2char,
|
|
.char2uni = char2uni,
|
|
.charset2lower = charset2lower,
|
|
.charset2upper = charset2upper,
|
|
};
|
|
|
|
/* Returns a simple default translation table */
|
|
struct nls_table *load_nls_default(void)
|
|
{
|
|
struct nls_table *default_nls;
|
|
|
|
default_nls = load_nls(CONFIG_NLS_DEFAULT);
|
|
if (default_nls != NULL)
|
|
return default_nls;
|
|
else
|
|
return &default_table;
|
|
}
|
|
|
|
EXPORT_SYMBOL(register_nls);
|
|
EXPORT_SYMBOL(unregister_nls);
|
|
EXPORT_SYMBOL(unload_nls);
|
|
EXPORT_SYMBOL(load_nls);
|
|
EXPORT_SYMBOL(load_nls_default);
|
|
EXPORT_SYMBOL(utf8_mbtowc);
|
|
EXPORT_SYMBOL(utf8_mbstowcs);
|
|
EXPORT_SYMBOL(utf8_wctomb);
|
|
EXPORT_SYMBOL(utf8_wcstombs);
|
|
|
|
MODULE_LICENSE("Dual BSD/GPL");
|