ia64/linux-2.6.18-xen.hg

annotate fs/nls/nls_base.c @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
rev   line source
ian@0 1 /*
ian@0 2 * linux/fs/nls_base.c
ian@0 3 *
ian@0 4 * Native language support--charsets and unicode translations.
ian@0 5 * By Gordon Chaffee 1996, 1997
ian@0 6 *
ian@0 7 * Unicode based case conversion 1999 by Wolfram Pienkoss
ian@0 8 *
ian@0 9 */
ian@0 10
ian@0 11 #include <linux/module.h>
ian@0 12 #include <linux/string.h>
ian@0 13 #include <linux/nls.h>
ian@0 14 #include <linux/kernel.h>
ian@0 15 #include <linux/errno.h>
ian@0 16 #ifdef CONFIG_KMOD
ian@0 17 #include <linux/kmod.h>
ian@0 18 #endif
ian@0 19 #include <linux/spinlock.h>
ian@0 20
ian@0 21 static struct nls_table default_table;
ian@0 22 static struct nls_table *tables = &default_table;
ian@0 23 static DEFINE_SPINLOCK(nls_lock);
ian@0 24
ian@0 25 /*
ian@0 26 * Sample implementation from Unicode home page.
ian@0 27 * http://www.stonehand.com/unicode/standard/fss-utf.html
ian@0 28 */
ian@0 29 struct utf8_table {
ian@0 30 int cmask;
ian@0 31 int cval;
ian@0 32 int shift;
ian@0 33 long lmask;
ian@0 34 long lval;
ian@0 35 };
ian@0 36
ian@0 37 static struct utf8_table utf8_table[] =
ian@0 38 {
ian@0 39 {0x80, 0x00, 0*6, 0x7F, 0, /* 1 byte sequence */},
ian@0 40 {0xE0, 0xC0, 1*6, 0x7FF, 0x80, /* 2 byte sequence */},
ian@0 41 {0xF0, 0xE0, 2*6, 0xFFFF, 0x800, /* 3 byte sequence */},
ian@0 42 {0xF8, 0xF0, 3*6, 0x1FFFFF, 0x10000, /* 4 byte sequence */},
ian@0 43 {0xFC, 0xF8, 4*6, 0x3FFFFFF, 0x200000, /* 5 byte sequence */},
ian@0 44 {0xFE, 0xFC, 5*6, 0x7FFFFFFF, 0x4000000, /* 6 byte sequence */},
ian@0 45 {0, /* end of table */}
ian@0 46 };
ian@0 47
ian@0 48 int
ian@0 49 utf8_mbtowc(wchar_t *p, const __u8 *s, int n)
ian@0 50 {
ian@0 51 long l;
ian@0 52 int c0, c, nc;
ian@0 53 struct utf8_table *t;
ian@0 54
ian@0 55 nc = 0;
ian@0 56 c0 = *s;
ian@0 57 l = c0;
ian@0 58 for (t = utf8_table; t->cmask; t++) {
ian@0 59 nc++;
ian@0 60 if ((c0 & t->cmask) == t->cval) {
ian@0 61 l &= t->lmask;
ian@0 62 if (l < t->lval)
ian@0 63 return -1;
ian@0 64 *p = l;
ian@0 65 return nc;
ian@0 66 }
ian@0 67 if (n <= nc)
ian@0 68 return -1;
ian@0 69 s++;
ian@0 70 c = (*s ^ 0x80) & 0xFF;
ian@0 71 if (c & 0xC0)
ian@0 72 return -1;
ian@0 73 l = (l << 6) | c;
ian@0 74 }
ian@0 75 return -1;
ian@0 76 }
ian@0 77
ian@0 78 int
ian@0 79 utf8_mbstowcs(wchar_t *pwcs, const __u8 *s, int n)
ian@0 80 {
ian@0 81 __u16 *op;
ian@0 82 const __u8 *ip;
ian@0 83 int size;
ian@0 84
ian@0 85 op = pwcs;
ian@0 86 ip = s;
ian@0 87 while (*ip && n > 0) {
ian@0 88 if (*ip & 0x80) {
ian@0 89 size = utf8_mbtowc(op, ip, n);
ian@0 90 if (size == -1) {
ian@0 91 /* Ignore character and move on */
ian@0 92 ip++;
ian@0 93 n--;
ian@0 94 } else {
ian@0 95 op++;
ian@0 96 ip += size;
ian@0 97 n -= size;
ian@0 98 }
ian@0 99 } else {
ian@0 100 *op++ = *ip++;
ian@0 101 n--;
ian@0 102 }
ian@0 103 }
ian@0 104 return (op - pwcs);
ian@0 105 }
ian@0 106
ian@0 107 int
ian@0 108 utf8_wctomb(__u8 *s, wchar_t wc, int maxlen)
ian@0 109 {
ian@0 110 long l;
ian@0 111 int c, nc;
ian@0 112 struct utf8_table *t;
ian@0 113
ian@0 114 if (s == 0)
ian@0 115 return 0;
ian@0 116
ian@0 117 l = wc;
ian@0 118 nc = 0;
ian@0 119 for (t = utf8_table; t->cmask && maxlen; t++, maxlen--) {
ian@0 120 nc++;
ian@0 121 if (l <= t->lmask) {
ian@0 122 c = t->shift;
ian@0 123 *s = t->cval | (l >> c);
ian@0 124 while (c > 0) {
ian@0 125 c -= 6;
ian@0 126 s++;
ian@0 127 *s = 0x80 | ((l >> c) & 0x3F);
ian@0 128 }
ian@0 129 return nc;
ian@0 130 }
ian@0 131 }
ian@0 132 return -1;
ian@0 133 }
ian@0 134
ian@0 135 int
ian@0 136 utf8_wcstombs(__u8 *s, const wchar_t *pwcs, int maxlen)
ian@0 137 {
ian@0 138 const __u16 *ip;
ian@0 139 __u8 *op;
ian@0 140 int size;
ian@0 141
ian@0 142 op = s;
ian@0 143 ip = pwcs;
ian@0 144 while (*ip && maxlen > 0) {
ian@0 145 if (*ip > 0x7f) {
ian@0 146 size = utf8_wctomb(op, *ip, maxlen);
ian@0 147 if (size == -1) {
ian@0 148 /* Ignore character and move on */
ian@0 149 maxlen--;
ian@0 150 } else {
ian@0 151 op += size;
ian@0 152 maxlen -= size;
ian@0 153 }
ian@0 154 } else {
ian@0 155 *op++ = (__u8) *ip;
ian@0 156 }
ian@0 157 ip++;
ian@0 158 }
ian@0 159 return (op - s);
ian@0 160 }
ian@0 161
ian@0 162 int register_nls(struct nls_table * nls)
ian@0 163 {
ian@0 164 struct nls_table ** tmp = &tables;
ian@0 165
ian@0 166 if (!nls)
ian@0 167 return -EINVAL;
ian@0 168 if (nls->next)
ian@0 169 return -EBUSY;
ian@0 170
ian@0 171 spin_lock(&nls_lock);
ian@0 172 while (*tmp) {
ian@0 173 if (nls == *tmp) {
ian@0 174 spin_unlock(&nls_lock);
ian@0 175 return -EBUSY;
ian@0 176 }
ian@0 177 tmp = &(*tmp)->next;
ian@0 178 }
ian@0 179 nls->next = tables;
ian@0 180 tables = nls;
ian@0 181 spin_unlock(&nls_lock);
ian@0 182 return 0;
ian@0 183 }
ian@0 184
ian@0 185 int unregister_nls(struct nls_table * nls)
ian@0 186 {
ian@0 187 struct nls_table ** tmp = &tables;
ian@0 188
ian@0 189 spin_lock(&nls_lock);
ian@0 190 while (*tmp) {
ian@0 191 if (nls == *tmp) {
ian@0 192 *tmp = nls->next;
ian@0 193 spin_unlock(&nls_lock);
ian@0 194 return 0;
ian@0 195 }
ian@0 196 tmp = &(*tmp)->next;
ian@0 197 }
ian@0 198 spin_unlock(&nls_lock);
ian@0 199 return -EINVAL;
ian@0 200 }
ian@0 201
ian@0 202 static struct nls_table *find_nls(char *charset)
ian@0 203 {
ian@0 204 struct nls_table *nls;
ian@0 205 spin_lock(&nls_lock);
ian@0 206 for (nls = tables; nls; nls = nls->next) {
ian@0 207 if (!strcmp(nls->charset, charset))
ian@0 208 break;
ian@0 209 if (nls->alias && !strcmp(nls->alias, charset))
ian@0 210 break;
ian@0 211 }
ian@0 212 if (nls && !try_module_get(nls->owner))
ian@0 213 nls = NULL;
ian@0 214 spin_unlock(&nls_lock);
ian@0 215 return nls;
ian@0 216 }
ian@0 217
ian@0 218 struct nls_table *load_nls(char *charset)
ian@0 219 {
ian@0 220 struct nls_table *nls;
ian@0 221 #ifdef CONFIG_KMOD
ian@0 222 int ret;
ian@0 223 #endif
ian@0 224
ian@0 225 nls = find_nls(charset);
ian@0 226 if (nls)
ian@0 227 return nls;
ian@0 228
ian@0 229 #ifdef CONFIG_KMOD
ian@0 230 ret = request_module("nls_%s", charset);
ian@0 231 if (ret != 0) {
ian@0 232 printk("Unable to load NLS charset %s\n", charset);
ian@0 233 return NULL;
ian@0 234 }
ian@0 235 nls = find_nls(charset);
ian@0 236 #endif
ian@0 237 return nls;
ian@0 238 }
ian@0 239
ian@0 240 void unload_nls(struct nls_table *nls)
ian@0 241 {
ian@0 242 module_put(nls->owner);
ian@0 243 }
ian@0 244
ian@0 245 static wchar_t charset2uni[256] = {
ian@0 246 /* 0x00*/
ian@0 247 0x0000, 0x0001, 0x0002, 0x0003,
ian@0 248 0x0004, 0x0005, 0x0006, 0x0007,
ian@0 249 0x0008, 0x0009, 0x000a, 0x000b,
ian@0 250 0x000c, 0x000d, 0x000e, 0x000f,
ian@0 251 /* 0x10*/
ian@0 252 0x0010, 0x0011, 0x0012, 0x0013,
ian@0 253 0x0014, 0x0015, 0x0016, 0x0017,
ian@0 254 0x0018, 0x0019, 0x001a, 0x001b,
ian@0 255 0x001c, 0x001d, 0x001e, 0x001f,
ian@0 256 /* 0x20*/
ian@0 257 0x0020, 0x0021, 0x0022, 0x0023,
ian@0 258 0x0024, 0x0025, 0x0026, 0x0027,
ian@0 259 0x0028, 0x0029, 0x002a, 0x002b,
ian@0 260 0x002c, 0x002d, 0x002e, 0x002f,
ian@0 261 /* 0x30*/
ian@0 262 0x0030, 0x0031, 0x0032, 0x0033,
ian@0 263 0x0034, 0x0035, 0x0036, 0x0037,
ian@0 264 0x0038, 0x0039, 0x003a, 0x003b,
ian@0 265 0x003c, 0x003d, 0x003e, 0x003f,
ian@0 266 /* 0x40*/
ian@0 267 0x0040, 0x0041, 0x0042, 0x0043,
ian@0 268 0x0044, 0x0045, 0x0046, 0x0047,
ian@0 269 0x0048, 0x0049, 0x004a, 0x004b,
ian@0 270 0x004c, 0x004d, 0x004e, 0x004f,
ian@0 271 /* 0x50*/
ian@0 272 0x0050, 0x0051, 0x0052, 0x0053,
ian@0 273 0x0054, 0x0055, 0x0056, 0x0057,
ian@0 274 0x0058, 0x0059, 0x005a, 0x005b,
ian@0 275 0x005c, 0x005d, 0x005e, 0x005f,
ian@0 276 /* 0x60*/
ian@0 277 0x0060, 0x0061, 0x0062, 0x0063,
ian@0 278 0x0064, 0x0065, 0x0066, 0x0067,
ian@0 279 0x0068, 0x0069, 0x006a, 0x006b,
ian@0 280 0x006c, 0x006d, 0x006e, 0x006f,
ian@0 281 /* 0x70*/
ian@0 282 0x0070, 0x0071, 0x0072, 0x0073,
ian@0 283 0x0074, 0x0075, 0x0076, 0x0077,
ian@0 284 0x0078, 0x0079, 0x007a, 0x007b,
ian@0 285 0x007c, 0x007d, 0x007e, 0x007f,
ian@0 286 /* 0x80*/
ian@0 287 0x0080, 0x0081, 0x0082, 0x0083,
ian@0 288 0x0084, 0x0085, 0x0086, 0x0087,
ian@0 289 0x0088, 0x0089, 0x008a, 0x008b,
ian@0 290 0x008c, 0x008d, 0x008e, 0x008f,
ian@0 291 /* 0x90*/
ian@0 292 0x0090, 0x0091, 0x0092, 0x0093,
ian@0 293 0x0094, 0x0095, 0x0096, 0x0097,
ian@0 294 0x0098, 0x0099, 0x009a, 0x009b,
ian@0 295 0x009c, 0x009d, 0x009e, 0x009f,
ian@0 296 /* 0xa0*/
ian@0 297 0x00a0, 0x00a1, 0x00a2, 0x00a3,
ian@0 298 0x00a4, 0x00a5, 0x00a6, 0x00a7,
ian@0 299 0x00a8, 0x00a9, 0x00aa, 0x00ab,
ian@0 300 0x00ac, 0x00ad, 0x00ae, 0x00af,
ian@0 301 /* 0xb0*/
ian@0 302 0x00b0, 0x00b1, 0x00b2, 0x00b3,
ian@0 303 0x00b4, 0x00b5, 0x00b6, 0x00b7,
ian@0 304 0x00b8, 0x00b9, 0x00ba, 0x00bb,
ian@0 305 0x00bc, 0x00bd, 0x00be, 0x00bf,
ian@0 306 /* 0xc0*/
ian@0 307 0x00c0, 0x00c1, 0x00c2, 0x00c3,
ian@0 308 0x00c4, 0x00c5, 0x00c6, 0x00c7,
ian@0 309 0x00c8, 0x00c9, 0x00ca, 0x00cb,
ian@0 310 0x00cc, 0x00cd, 0x00ce, 0x00cf,
ian@0 311 /* 0xd0*/
ian@0 312 0x00d0, 0x00d1, 0x00d2, 0x00d3,
ian@0 313 0x00d4, 0x00d5, 0x00d6, 0x00d7,
ian@0 314 0x00d8, 0x00d9, 0x00da, 0x00db,
ian@0 315 0x00dc, 0x00dd, 0x00de, 0x00df,
ian@0 316 /* 0xe0*/
ian@0 317 0x00e0, 0x00e1, 0x00e2, 0x00e3,
ian@0 318 0x00e4, 0x00e5, 0x00e6, 0x00e7,
ian@0 319 0x00e8, 0x00e9, 0x00ea, 0x00eb,
ian@0 320 0x00ec, 0x00ed, 0x00ee, 0x00ef,
ian@0 321 /* 0xf0*/
ian@0 322 0x00f0, 0x00f1, 0x00f2, 0x00f3,
ian@0 323 0x00f4, 0x00f5, 0x00f6, 0x00f7,
ian@0 324 0x00f8, 0x00f9, 0x00fa, 0x00fb,
ian@0 325 0x00fc, 0x00fd, 0x00fe, 0x00ff,
ian@0 326 };
ian@0 327
ian@0 328 static unsigned char page00[256] = {
ian@0 329 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
ian@0 330 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
ian@0 331 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
ian@0 332 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
ian@0 333 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
ian@0 334 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
ian@0 335 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
ian@0 336 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
ian@0 337 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
ian@0 338 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
ian@0 339 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
ian@0 340 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
ian@0 341 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
ian@0 342 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
ian@0 343 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
ian@0 344 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
ian@0 345
ian@0 346 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
ian@0 347 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
ian@0 348 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
ian@0 349 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
ian@0 350 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
ian@0 351 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
ian@0 352 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
ian@0 353 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
ian@0 354 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
ian@0 355 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
ian@0 356 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
ian@0 357 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
ian@0 358 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
ian@0 359 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
ian@0 360 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
ian@0 361 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
ian@0 362 };
ian@0 363
ian@0 364 static unsigned char *page_uni2charset[256] = {
ian@0 365 page00
ian@0 366 };
ian@0 367
ian@0 368 static unsigned char charset2lower[256] = {
ian@0 369 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
ian@0 370 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
ian@0 371 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
ian@0 372 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
ian@0 373 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
ian@0 374 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
ian@0 375 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
ian@0 376 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
ian@0 377 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */
ian@0 378 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */
ian@0 379 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */
ian@0 380 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
ian@0 381 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
ian@0 382 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
ian@0 383 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
ian@0 384 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
ian@0 385
ian@0 386 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
ian@0 387 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
ian@0 388 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
ian@0 389 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
ian@0 390 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
ian@0 391 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
ian@0 392 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
ian@0 393 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
ian@0 394 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
ian@0 395 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
ian@0 396 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
ian@0 397 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
ian@0 398 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
ian@0 399 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
ian@0 400 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
ian@0 401 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
ian@0 402 };
ian@0 403
ian@0 404 static unsigned char charset2upper[256] = {
ian@0 405 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
ian@0 406 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
ian@0 407 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
ian@0 408 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
ian@0 409 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
ian@0 410 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
ian@0 411 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
ian@0 412 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
ian@0 413 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
ian@0 414 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
ian@0 415 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
ian@0 416 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
ian@0 417 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */
ian@0 418 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */
ian@0 419 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */
ian@0 420 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
ian@0 421
ian@0 422 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
ian@0 423 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
ian@0 424 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
ian@0 425 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
ian@0 426 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
ian@0 427 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
ian@0 428 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
ian@0 429 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
ian@0 430 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
ian@0 431 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
ian@0 432 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
ian@0 433 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
ian@0 434 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
ian@0 435 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
ian@0 436 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
ian@0 437 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
ian@0 438 };
ian@0 439
ian@0 440
ian@0 441 static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
ian@0 442 {
ian@0 443 unsigned char *uni2charset;
ian@0 444 unsigned char cl = uni & 0x00ff;
ian@0 445 unsigned char ch = (uni & 0xff00) >> 8;
ian@0 446
ian@0 447 if (boundlen <= 0)
ian@0 448 return -ENAMETOOLONG;
ian@0 449
ian@0 450 uni2charset = page_uni2charset[ch];
ian@0 451 if (uni2charset && uni2charset[cl])
ian@0 452 out[0] = uni2charset[cl];
ian@0 453 else
ian@0 454 return -EINVAL;
ian@0 455 return 1;
ian@0 456 }
ian@0 457
ian@0 458 static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
ian@0 459 {
ian@0 460 *uni = charset2uni[*rawstring];
ian@0 461 if (*uni == 0x0000)
ian@0 462 return -EINVAL;
ian@0 463 return 1;
ian@0 464 }
ian@0 465
ian@0 466 static struct nls_table default_table = {
ian@0 467 .charset = "default",
ian@0 468 .uni2char = uni2char,
ian@0 469 .char2uni = char2uni,
ian@0 470 .charset2lower = charset2lower,
ian@0 471 .charset2upper = charset2upper,
ian@0 472 };
ian@0 473
ian@0 474 /* Returns a simple default translation table */
ian@0 475 struct nls_table *load_nls_default(void)
ian@0 476 {
ian@0 477 struct nls_table *default_nls;
ian@0 478
ian@0 479 default_nls = load_nls(CONFIG_NLS_DEFAULT);
ian@0 480 if (default_nls != NULL)
ian@0 481 return default_nls;
ian@0 482 else
ian@0 483 return &default_table;
ian@0 484 }
ian@0 485
ian@0 486 EXPORT_SYMBOL(register_nls);
ian@0 487 EXPORT_SYMBOL(unregister_nls);
ian@0 488 EXPORT_SYMBOL(unload_nls);
ian@0 489 EXPORT_SYMBOL(load_nls);
ian@0 490 EXPORT_SYMBOL(load_nls_default);
ian@0 491 EXPORT_SYMBOL(utf8_mbtowc);
ian@0 492 EXPORT_SYMBOL(utf8_mbstowcs);
ian@0 493 EXPORT_SYMBOL(utf8_wctomb);
ian@0 494 EXPORT_SYMBOL(utf8_wcstombs);
ian@0 495
ian@0 496 MODULE_LICENSE("Dual BSD/GPL");