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Commit f46ba223 authored by Jun Chen's avatar Jun Chen Committed by Linus Torvalds
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[PATCH] fs: make nls_cp936.c handle some U00XY characters and U20AC correctly 

Twenty characters in cp936 are not correctly handled.  They're all in the
U00 plane.  nls_cp936 converts all U00XY to XY but this is not correct for
some characters.(e.g.  U00B7 -> A1A4, U00A8 -> A1A7).

This problem is fixed by generating u2c_00 based on all c2u_xx and changing
uni2char() to give U00 plane a special handling.  The "€"(U20AC,80 in
cp936) is also be handled properly.
Acked-by: default avatarGang Chen <cgdlut@gmail.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 15ad7cdc
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Showing with 103 additions and 10 deletions
fs/nls/nls_cp936.c
View file @ f46ba223
......@@ -4421,6 +4421,73 @@ static wchar_t *page_charset2uni[256] = {
c2u_F8, c2u_F9, c2u_FA, c2u_FB, c2u_FC, c2u_FD, c2u_FE, NULL,
};
static unsigned char u2c_00[512] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x03 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x04-0x07 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08-0x0B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0C-0x0F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x13 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x14-0x17 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1C-0x1F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20-0x23 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x24-0x27 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2C-0x2F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x33 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x34-0x37 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3C-0x3F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40-0x43 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x44-0x47 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48-0x4B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x4C-0x4F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x53 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x54-0x57 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x5C-0x5F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x63 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x64-0x67 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x6C-0x6F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x73 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x74-0x77 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78-0x7B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x7C-0x7F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x83 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x84-0x87 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x8C-0x8F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x93 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x94-0x97 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98-0x9B */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x9C-0x9F */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xA0-0xA3 */
0xA1, 0xE8, 0x00, 0x00, 0x00, 0x00, 0xA1, 0xEC, /* 0xA4-0xA7 */
0xA1, 0xA7, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xA8-0xAB */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xAC-0xAF */
0xA1, 0xE3, 0xA1, 0xC0, 0x00, 0x00, 0x00, 0x00, /* 0xB0-0xB3 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xA1, 0xA4, /* 0xB4-0xB7 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xB8-0xBB */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xBC-0xBF */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xC0-0xC3 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xC4-0xC7 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xC8-0xCB */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xCC-0xCF */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xD0-0xD3 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xA1, 0xC1, /* 0xD4-0xD7 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xD8-0xDB */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xDC-0xDF */
0xA8, 0xA4, 0xA8, 0xA2, 0x00, 0x00, 0x00, 0x00, /* 0xE0-0xE3 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xE4-0xE7 */
0xA8, 0xA8, 0xA8, 0xA6, 0xA8, 0xBA, 0x00, 0x00, /* 0xE8-0xEB */
0xA8, 0xAC, 0xA8, 0xAA, 0x00, 0x00, 0x00, 0x00, /* 0xEC-0xEF */
0x00, 0x00, 0x00, 0x00, 0xA8, 0xB0, 0xA8, 0xAE, /* 0xF0-0xF3 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xA1, 0xC2, /* 0xF4-0xF7 */
0x00, 0x00, 0xA8, 0xB4, 0xA8, 0xB2, 0x00, 0x00, /* 0xF8-0xFB */
0xA8, 0xB9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xFC-0xFF */
};
static unsigned char u2c_01[512] = {
0xA8, 0xA1, 0xA8, 0xA1, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x03 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x04-0x07 */
......@@ -10825,7 +10892,7 @@ static unsigned char u2c_FF[512] = {
};
static unsigned char *page_uni2charset[256] = {
NULL, u2c_01, u2c_02, u2c_03, u2c_04, NULL, NULL, NULL,
u2c_00, u2c_01, u2c_02, u2c_03, u2c_04, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
......@@ -10936,11 +11003,34 @@ static int uni2char(const wchar_t uni,
unsigned char *uni2charset;
unsigned char cl = uni&0xFF;
unsigned char ch = (uni>>8)&0xFF;
int n;
unsigned char out0,out1;
if (boundlen <= 0)
return -ENAMETOOLONG;
if (uni == 0x20ac) {/* Euro symbol.The only exception with a non-ascii unicode */
out[0] = 0x80;
return 1;
}
if (ch == 0) { /* handle the U00 plane*/
/* if (cl == 0) return -EINVAL;*/ /*U0000 is legal in cp936*/
out0 = u2c_00[cl*2];
out1 = u2c_00[cl*2+1];
if (out0 == 0x00 && out1 == 0x00) {
if (cl<0x80) {
out[0] = cl;
return 1;
}
return -EINVAL;
} else {
if (boundlen <= 1)
return -ENAMETOOLONG;
out[0] = out0;
out[1] = out1;
return 2;
}
}
uni2charset = page_uni2charset[ch];
if (uni2charset) {
......@@ -10950,15 +11040,10 @@ static int uni2char(const wchar_t uni,
out[1] = uni2charset[cl*2+1];
if (out[0] == 0x00 && out[1] == 0x00)
return -EINVAL;
n = 2;
} else if (ch==0 && cl) {
out[0] = cl;
n = 1;
return 2;
}
else
return -EINVAL;
return n;
}
static int char2uni(const unsigned char *rawstring, int boundlen,
......@@ -10972,7 +11057,11 @@ static int char2uni(const unsigned char *rawstring, int boundlen,
return -ENAMETOOLONG;
if (boundlen == 1) {
if (rawstring[0]==0x80) { /* Euro symbol.The only exception with a non-ascii unicode */
*uni = 0x20ac;
} else {
*uni = rawstring[0];
}
return 1;
}
......@@ -10986,7 +11075,11 @@ static int char2uni(const unsigned char *rawstring, int boundlen,
return -EINVAL;
n = 2;
} else{
if (ch==0x80) {/* Euro symbol.The only exception with a non-ascii unicode */
*uni = 0x20ac;
} else {
*uni = ch;
}
n = 1;
}
return n;
......
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