cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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nls_ascii.c (5850B)

      1/*
      2 * linux/fs/nls/nls_ascii.c
      3 *
      4 * Charset ascii translation tables.
      5 * Generated automatically from the Unicode and charset
      6 * tables from the Unicode Organization (www.unicode.org).
      7 * The Unicode to charset table has only exact mappings.
      8 */
      9
     10#include <linux/module.h>
     11#include <linux/kernel.h>
     12#include <linux/string.h>
     13#include <linux/nls.h>
     14#include <linux/errno.h>
     15
     16static const wchar_t charset2uni[256] = {
     17	/* 0x00*/
     18	0x0000, 0x0001, 0x0002, 0x0003,
     19	0x0004, 0x0005, 0x0006, 0x0007,
     20	0x0008, 0x0009, 0x000a, 0x000b,
     21	0x000c, 0x000d, 0x000e, 0x000f,
     22	/* 0x10*/
     23	0x0010, 0x0011, 0x0012, 0x0013,
     24	0x0014, 0x0015, 0x0016, 0x0017,
     25	0x0018, 0x0019, 0x001a, 0x001b,
     26	0x001c, 0x001d, 0x001e, 0x001f,
     27	/* 0x20*/
     28	0x0020, 0x0021, 0x0022, 0x0023,
     29	0x0024, 0x0025, 0x0026, 0x0027,
     30	0x0028, 0x0029, 0x002a, 0x002b,
     31	0x002c, 0x002d, 0x002e, 0x002f,
     32	/* 0x30*/
     33	0x0030, 0x0031, 0x0032, 0x0033,
     34	0x0034, 0x0035, 0x0036, 0x0037,
     35	0x0038, 0x0039, 0x003a, 0x003b,
     36	0x003c, 0x003d, 0x003e, 0x003f,
     37	/* 0x40*/
     38	0x0040, 0x0041, 0x0042, 0x0043,
     39	0x0044, 0x0045, 0x0046, 0x0047,
     40	0x0048, 0x0049, 0x004a, 0x004b,
     41	0x004c, 0x004d, 0x004e, 0x004f,
     42	/* 0x50*/
     43	0x0050, 0x0051, 0x0052, 0x0053,
     44	0x0054, 0x0055, 0x0056, 0x0057,
     45	0x0058, 0x0059, 0x005a, 0x005b,
     46	0x005c, 0x005d, 0x005e, 0x005f,
     47	/* 0x60*/
     48	0x0060, 0x0061, 0x0062, 0x0063,
     49	0x0064, 0x0065, 0x0066, 0x0067,
     50	0x0068, 0x0069, 0x006a, 0x006b,
     51	0x006c, 0x006d, 0x006e, 0x006f,
     52	/* 0x70*/
     53	0x0070, 0x0071, 0x0072, 0x0073,
     54	0x0074, 0x0075, 0x0076, 0x0077,
     55	0x0078, 0x0079, 0x007a, 0x007b,
     56	0x007c, 0x007d, 0x007e, 0x007f,
     57};
     58
     59static const unsigned char page00[256] = {
     60	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
     61	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
     62	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
     63	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
     64	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
     65	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
     66	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
     67	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
     68	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
     69	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
     70	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
     71	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
     72	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
     73	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
     74	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
     75	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
     76};
     77
     78static const unsigned char *const page_uni2charset[256] = {
     79	page00,
     80};
     81
     82static const unsigned char charset2lower[256] = {
     83	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
     84	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
     85	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
     86	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
     87	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
     88	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
     89	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
     90	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
     91	0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */
     92	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */
     93	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */
     94	0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
     95	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
     96	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
     97	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
     98	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
     99};
    100
    101static const unsigned char charset2upper[256] = {
    102	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
    103	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
    104	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
    105	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
    106	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
    107	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
    108	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
    109	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
    110	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
    111	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
    112	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
    113	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
    114	0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */
    115	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */
    116	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */
    117	0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
    118};
    119
    120static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
    121{
    122	const unsigned char *uni2charset;
    123	unsigned char cl = uni & 0x00ff;
    124	unsigned char ch = (uni & 0xff00) >> 8;
    125
    126	if (boundlen <= 0)
    127		return -ENAMETOOLONG;
    128
    129	uni2charset = page_uni2charset[ch];
    130	if (uni2charset && uni2charset[cl])
    131		out[0] = uni2charset[cl];
    132	else
    133		return -EINVAL;
    134	return 1;
    135}
    136
    137static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
    138{
    139	*uni = charset2uni[*rawstring];
    140	if (*uni == 0x0000)
    141		return -EINVAL;
    142	return 1;
    143}
    144
    145static struct nls_table table = {
    146	.charset	= "ascii",
    147	.uni2char	= uni2char,
    148	.char2uni	= char2uni,
    149	.charset2lower	= charset2lower,
    150	.charset2upper	= charset2upper,
    151};
    152
    153static int __init init_nls_ascii(void)
    154{
    155	return register_nls(&table);
    156}
    157
    158static void __exit exit_nls_ascii(void)
    159{
    160	unregister_nls(&table);
    161}
    162
    163module_init(init_nls_ascii)
    164module_exit(exit_nls_ascii)
    165
    166MODULE_LICENSE("Dual BSD/GPL");