[PATCH 04/15] nls: Split default charset from NLS core

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Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx>
---
 fs/nls/Makefile      |   2 +-
 fs/nls/nls_base.c    | 458 -----------------------------------------
 fs/nls/nls_default.c | 473 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 474 insertions(+), 459 deletions(-)
 create mode 100644 fs/nls/nls_default.c

diff --git a/fs/nls/Makefile b/fs/nls/Makefile
index ac54db297128..d7cdcc797db7 100644
--- a/fs/nls/Makefile
+++ b/fs/nls/Makefile
@@ -3,7 +3,7 @@
 # Makefile for native language support
 #
 
-obj-$(CONFIG_NLS)		+= nls_base.o
+obj-$(CONFIG_NLS)		+= nls_base.o nls_default.o
 
 obj-$(CONFIG_NLS_CODEPAGE_437)	+= nls_cp437.o
 obj-$(CONFIG_NLS_CODEPAGE_737)	+= nls_cp737.o
diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
index 0bb0acf6893f..47deb2fcf3aa 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -15,223 +15,11 @@
 #include <linux/errno.h>
 #include <linux/kmod.h>
 #include <linux/spinlock.h>
-#include <asm/byteorder.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    */}
-};
-
-#define UNICODE_MAX	0x0010ffff
-#define PLANE_SIZE	0x00010000
-
-#define SURROGATE_MASK	0xfffff800
-#define SURROGATE_PAIR	0x0000d800
-#define SURROGATE_LOW	0x00000400
-#define SURROGATE_BITS	0x000003ff
-
-int utf8_to_utf32(const u8 *s, int inlen, unicode_t *pu)
-{
-	unsigned 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 || l > UNICODE_MAX ||
-					(l & SURROGATE_MASK) == SURROGATE_PAIR)
-				return -1;
-			*pu = (unicode_t) l;
-			return nc;
-		}
-		if (inlen <= nc)
-			return -1;
-		s++;
-		c = (*s ^ 0x80) & 0xFF;
-		if (c & 0xC0)
-			return -1;
-		l = (l << 6) | c;
-	}
-	return -1;
-}
-EXPORT_SYMBOL(utf8_to_utf32);
-
-int utf32_to_utf8(unicode_t u, u8 *s, int maxout)
-{
-	unsigned long l;
-	int c, nc;
-	const struct utf8_table *t;
-
-	if (!s)
-		return 0;
-
-	l = u;
-	if (l > UNICODE_MAX || (l & SURROGATE_MASK) == SURROGATE_PAIR)
-		return -1;
-
-	nc = 0;
-	for (t = utf8_table; t->cmask && maxout; t++, maxout--) {
-		nc++;
-		if (l <= t->lmask) {
-			c = t->shift;
-			*s = (u8) (t->cval | (l >> c));
-			while (c > 0) {
-				c -= 6;
-				s++;
-				*s = (u8) (0x80 | ((l >> c) & 0x3F));
-			}
-			return nc;
-		}
-	}
-	return -1;
-}
-EXPORT_SYMBOL(utf32_to_utf8);
-
-static inline void put_utf16(wchar_t *s, unsigned c, enum utf16_endian endian)
-{
-	switch (endian) {
-	default:
-		*s = (wchar_t) c;
-		break;
-	case UTF16_LITTLE_ENDIAN:
-		*s = __cpu_to_le16(c);
-		break;
-	case UTF16_BIG_ENDIAN:
-		*s = __cpu_to_be16(c);
-		break;
-	}
-}
-
-int utf8s_to_utf16s(const u8 *s, int inlen, enum utf16_endian endian,
-		wchar_t *pwcs, int maxout)
-{
-	u16 *op;
-	int size;
-	unicode_t u;
-
-	op = pwcs;
-	while (inlen > 0 && maxout > 0 && *s) {
-		if (*s & 0x80) {
-			size = utf8_to_utf32(s, inlen, &u);
-			if (size < 0)
-				return -EINVAL;
-			s += size;
-			inlen -= size;
-
-			if (u >= PLANE_SIZE) {
-				if (maxout < 2)
-					break;
-				u -= PLANE_SIZE;
-				put_utf16(op++, SURROGATE_PAIR |
-						((u >> 10) & SURROGATE_BITS),
-						endian);
-				put_utf16(op++, SURROGATE_PAIR |
-						SURROGATE_LOW |
-						(u & SURROGATE_BITS),
-						endian);
-				maxout -= 2;
-			} else {
-				put_utf16(op++, u, endian);
-				maxout--;
-			}
-		} else {
-			put_utf16(op++, *s++, endian);
-			inlen--;
-			maxout--;
-		}
-	}
-	return op - pwcs;
-}
-EXPORT_SYMBOL(utf8s_to_utf16s);
-
-static inline unsigned long get_utf16(unsigned c, enum utf16_endian endian)
-{
-	switch (endian) {
-	default:
-		return c;
-	case UTF16_LITTLE_ENDIAN:
-		return __le16_to_cpu(c);
-	case UTF16_BIG_ENDIAN:
-		return __be16_to_cpu(c);
-	}
-}
-
-int utf16s_to_utf8s(const wchar_t *pwcs, int inlen, enum utf16_endian endian,
-		u8 *s, int maxout)
-{
-	u8 *op;
-	int size;
-	unsigned long u, v;
-
-	op = s;
-	while (inlen > 0 && maxout > 0) {
-		u = get_utf16(*pwcs, endian);
-		if (!u)
-			break;
-		pwcs++;
-		inlen--;
-		if (u > 0x7f) {
-			if ((u & SURROGATE_MASK) == SURROGATE_PAIR) {
-				if (u & SURROGATE_LOW) {
-					/* Ignore character and move on */
-					continue;
-				}
-				if (inlen <= 0)
-					break;
-				v = get_utf16(*pwcs, endian);
-				if ((v & SURROGATE_MASK) != SURROGATE_PAIR ||
-						!(v & SURROGATE_LOW)) {
-					/* Ignore character and move on */
-					continue;
-				}
-				u = PLANE_SIZE + ((u & SURROGATE_BITS) << 10)
-						+ (v & SURROGATE_BITS);
-				pwcs++;
-				inlen--;
-			}
-			size = utf32_to_utf8(u, op, maxout);
-			if (size == -1) {
-				/* Ignore character and move on */
-			} else {
-				op += size;
-				maxout -= size;
-			}
-		} else {
-			*op++ = (u8) u;
-			maxout--;
-		}
-	}
-	return op - s;
-}
-EXPORT_SYMBOL(utf16s_to_utf8s);
-
 int __register_nls(struct nls_table *nls, struct module *owner)
 {
 	struct nls_table ** tmp = &tables;
@@ -299,254 +87,8 @@ 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 const struct nls_ops charset_ops = {
-	.uni2char = uni2char,
-	.char2uni = char2uni,
-};
-
-static struct nls_table default_table = {
-	.charset	= "default",
-	.ops = &charset_ops,
-	.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(unregister_nls);
 EXPORT_SYMBOL(unload_nls);
 EXPORT_SYMBOL(load_nls);
-EXPORT_SYMBOL(load_nls_default);
 
 MODULE_LICENSE("Dual BSD/GPL");
diff --git a/fs/nls/nls_default.c b/fs/nls/nls_default.c
new file mode 100644
index 000000000000..2cf2c8b12e78
--- /dev/null
+++ b/fs/nls/nls_default.c
@@ -0,0 +1,473 @@
+/*
+ * linux/fs/nls/nls_default.c
+ *
+ * Native language support--charsets and unicode translations.
+ * By Gordon Chaffee 1996, 1997
+ *
+ * Unicode based case conversion 1999 by Wolfram Pienkoss
+ *
+ */
+
+/*
+ * Sample implementation from Unicode home page.
+ * http://www.stonehand.com/unicode/standard/fss-utf.html
+ */
+
+#include <linux/module.h>
+#include <asm/byteorder.h>
+#include <linux/nls.h>
+
+static struct nls_table default_table;
+
+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    */}
+};
+
+#define UNICODE_MAX	0x0010ffff
+#define PLANE_SIZE	0x00010000
+
+#define SURROGATE_MASK	0xfffff800
+#define SURROGATE_PAIR	0x0000d800
+#define SURROGATE_LOW	0x00000400
+#define SURROGATE_BITS	0x000003ff
+
+int utf8_to_utf32(const u8 *s, int inlen, unicode_t *pu)
+{
+	unsigned 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 || l > UNICODE_MAX ||
+					(l & SURROGATE_MASK) == SURROGATE_PAIR)
+				return -1;
+			*pu = (unicode_t) l;
+			return nc;
+		}
+		if (inlen <= nc)
+			return -1;
+		s++;
+		c = (*s ^ 0x80) & 0xFF;
+		if (c & 0xC0)
+			return -1;
+		l = (l << 6) | c;
+	}
+	return -1;
+}
+EXPORT_SYMBOL(utf8_to_utf32);
+
+int utf32_to_utf8(unicode_t u, u8 *s, int maxout)
+{
+	unsigned long l;
+	int c, nc;
+	const struct utf8_table *t;
+
+	if (!s)
+		return 0;
+
+	l = u;
+	if (l > UNICODE_MAX || (l & SURROGATE_MASK) == SURROGATE_PAIR)
+		return -1;
+
+	nc = 0;
+	for (t = utf8_table; t->cmask && maxout; t++, maxout--) {
+		nc++;
+		if (l <= t->lmask) {
+			c = t->shift;
+			*s = (u8) (t->cval | (l >> c));
+			while (c > 0) {
+				c -= 6;
+				s++;
+				*s = (u8) (0x80 | ((l >> c) & 0x3F));
+			}
+			return nc;
+		}
+	}
+	return -1;
+}
+EXPORT_SYMBOL(utf32_to_utf8);
+
+static inline void put_utf16(wchar_t *s, unsigned c, enum utf16_endian endian)
+{
+	switch (endian) {
+	default:
+		*s = (wchar_t) c;
+		break;
+	case UTF16_LITTLE_ENDIAN:
+		*s = __cpu_to_le16(c);
+		break;
+	case UTF16_BIG_ENDIAN:
+		*s = __cpu_to_be16(c);
+		break;
+	}
+}
+
+int utf8s_to_utf16s(const u8 *s, int inlen, enum utf16_endian endian,
+		wchar_t *pwcs, int maxout)
+{
+	u16 *op;
+	int size;
+	unicode_t u;
+
+	op = pwcs;
+	while (inlen > 0 && maxout > 0 && *s) {
+		if (*s & 0x80) {
+			size = utf8_to_utf32(s, inlen, &u);
+			if (size < 0)
+				return -EINVAL;
+			s += size;
+			inlen -= size;
+
+			if (u >= PLANE_SIZE) {
+				if (maxout < 2)
+					break;
+				u -= PLANE_SIZE;
+				put_utf16(op++, SURROGATE_PAIR |
+						((u >> 10) & SURROGATE_BITS),
+						endian);
+				put_utf16(op++, SURROGATE_PAIR |
+						SURROGATE_LOW |
+						(u & SURROGATE_BITS),
+						endian);
+				maxout -= 2;
+			} else {
+				put_utf16(op++, u, endian);
+				maxout--;
+			}
+		} else {
+			put_utf16(op++, *s++, endian);
+			inlen--;
+			maxout--;
+		}
+	}
+	return op - pwcs;
+}
+EXPORT_SYMBOL(utf8s_to_utf16s);
+
+static inline unsigned long get_utf16(unsigned c, enum utf16_endian endian)
+{
+	switch (endian) {
+	default:
+		return c;
+	case UTF16_LITTLE_ENDIAN:
+		return __le16_to_cpu(c);
+	case UTF16_BIG_ENDIAN:
+		return __be16_to_cpu(c);
+	}
+}
+
+int utf16s_to_utf8s(const wchar_t *pwcs, int inlen, enum utf16_endian endian,
+		u8 *s, int maxout)
+{
+	u8 *op;
+	int size;
+	unsigned long u, v;
+
+	op = s;
+	while (inlen > 0 && maxout > 0) {
+		u = get_utf16(*pwcs, endian);
+		if (!u)
+			break;
+		pwcs++;
+		inlen--;
+		if (u > 0x7f) {
+			if ((u & SURROGATE_MASK) == SURROGATE_PAIR) {
+				if (u & SURROGATE_LOW) {
+					/* Ignore character and move on */
+					continue;
+				}
+				if (inlen <= 0)
+					break;
+				v = get_utf16(*pwcs, endian);
+				if ((v & SURROGATE_MASK) != SURROGATE_PAIR ||
+						!(v & SURROGATE_LOW)) {
+					/* Ignore character and move on */
+					continue;
+				}
+				u = PLANE_SIZE + ((u & SURROGATE_BITS) << 10)
+						+ (v & SURROGATE_BITS);
+				pwcs++;
+				inlen--;
+			}
+			size = utf32_to_utf8(u, op, maxout);
+			if (size == -1) {
+				/* Ignore character and move on */
+			} else {
+				op += size;
+				maxout -= size;
+			}
+		} else {
+			*op++ = (u8) u;
+			maxout--;
+		}
+	}
+	return op - s;
+}
+EXPORT_SYMBOL(utf16s_to_utf8s);
+
+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 const struct nls_ops charset_ops = {
+	.uni2char = uni2char,
+	.char2uni = char2uni,
+};
+
+static struct nls_table default_table = {
+	.charset	= "default",
+	.ops = &charset_ops,
+	.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(load_nls_default);
-- 
2.17.0




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