^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * linux/fs/nls/nls_base.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Native language support--charsets and unicode translations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * By Gordon Chaffee 1996, 1997
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Unicode based case conversion 1999 by Wolfram Pienkoss
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/nls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kmod.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static struct nls_table default_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static struct nls_table *tables = &default_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static DEFINE_SPINLOCK(nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Sample implementation from Unicode home page.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * http://www.stonehand.com/unicode/standard/fss-utf.html
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct utf8_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int cmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int cval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) long lmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) long lval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const struct utf8_table utf8_table[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {0x80, 0x00, 0*6, 0x7F, 0, /* 1 byte sequence */},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {0xE0, 0xC0, 1*6, 0x7FF, 0x80, /* 2 byte sequence */},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {0xF0, 0xE0, 2*6, 0xFFFF, 0x800, /* 3 byte sequence */},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {0xF8, 0xF0, 3*6, 0x1FFFFF, 0x10000, /* 4 byte sequence */},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {0xFC, 0xF8, 4*6, 0x3FFFFFF, 0x200000, /* 5 byte sequence */},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {0xFE, 0xFC, 5*6, 0x7FFFFFFF, 0x4000000, /* 6 byte sequence */},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {0, /* end of table */}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define UNICODE_MAX 0x0010ffff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define PLANE_SIZE 0x00010000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define SURROGATE_MASK 0xfffff800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define SURROGATE_PAIR 0x0000d800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define SURROGATE_LOW 0x00000400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define SURROGATE_BITS 0x000003ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int utf8_to_utf32(const u8 *s, int inlen, unicode_t *pu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) unsigned long l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int c0, c, nc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) const struct utf8_table *t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) nc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) c0 = *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) l = c0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) for (t = utf8_table; t->cmask; t++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) nc++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if ((c0 & t->cmask) == t->cval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) l &= t->lmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (l < t->lval || l > UNICODE_MAX ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) (l & SURROGATE_MASK) == SURROGATE_PAIR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) *pu = (unicode_t) l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return nc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (inlen <= nc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) c = (*s ^ 0x80) & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (c & 0xC0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) l = (l << 6) | c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) EXPORT_SYMBOL(utf8_to_utf32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int utf32_to_utf8(unicode_t u, u8 *s, int maxout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) unsigned long l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int c, nc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) const struct utf8_table *t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) l = u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (l > UNICODE_MAX || (l & SURROGATE_MASK) == SURROGATE_PAIR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) nc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) for (t = utf8_table; t->cmask && maxout; t++, maxout--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) nc++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (l <= t->lmask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) c = t->shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) *s = (u8) (t->cval | (l >> c));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) while (c > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) c -= 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) *s = (u8) (0x80 | ((l >> c) & 0x3F));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return nc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) EXPORT_SYMBOL(utf32_to_utf8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static inline void put_utf16(wchar_t *s, unsigned c, enum utf16_endian endian)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) switch (endian) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *s = (wchar_t) c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) case UTF16_LITTLE_ENDIAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) *s = __cpu_to_le16(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) case UTF16_BIG_ENDIAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) *s = __cpu_to_be16(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int utf8s_to_utf16s(const u8 *s, int inlen, enum utf16_endian endian,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) wchar_t *pwcs, int maxout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) u16 *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) unicode_t u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) op = pwcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) while (inlen > 0 && maxout > 0 && *s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (*s & 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) size = utf8_to_utf32(s, inlen, &u);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (size < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) s += size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) inlen -= size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (u >= PLANE_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (maxout < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) u -= PLANE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) put_utf16(op++, SURROGATE_PAIR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ((u >> 10) & SURROGATE_BITS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) put_utf16(op++, SURROGATE_PAIR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) SURROGATE_LOW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) (u & SURROGATE_BITS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) maxout -= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) put_utf16(op++, u, endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) maxout--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) put_utf16(op++, *s++, endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) inlen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) maxout--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return op - pwcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) EXPORT_SYMBOL(utf8s_to_utf16s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static inline unsigned long get_utf16(unsigned c, enum utf16_endian endian)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) switch (endian) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) case UTF16_LITTLE_ENDIAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return __le16_to_cpu(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) case UTF16_BIG_ENDIAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return __be16_to_cpu(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) int utf16s_to_utf8s(const wchar_t *pwcs, int inlen, enum utf16_endian endian,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) u8 *s, int maxout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) u8 *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) unsigned long u, v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) op = s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) while (inlen > 0 && maxout > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u = get_utf16(*pwcs, endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (!u)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) pwcs++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) inlen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (u > 0x7f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if ((u & SURROGATE_MASK) == SURROGATE_PAIR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (u & SURROGATE_LOW) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /* Ignore character and move on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (inlen <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) v = get_utf16(*pwcs, endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if ((v & SURROGATE_MASK) != SURROGATE_PAIR ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) !(v & SURROGATE_LOW)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Ignore character and move on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) u = PLANE_SIZE + ((u & SURROGATE_BITS) << 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) + (v & SURROGATE_BITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) pwcs++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) inlen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) size = utf32_to_utf8(u, op, maxout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (size == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* Ignore character and move on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) op += size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) maxout -= size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) *op++ = (u8) u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) maxout--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return op - s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) EXPORT_SYMBOL(utf16s_to_utf8s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) int __register_nls(struct nls_table *nls, struct module *owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct nls_table ** tmp = &tables;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (nls->next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) nls->owner = owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) spin_lock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) while (*tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (nls == *tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) spin_unlock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) tmp = &(*tmp)->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) nls->next = tables;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) tables = nls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) spin_unlock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) EXPORT_SYMBOL(__register_nls);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int unregister_nls(struct nls_table * nls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct nls_table ** tmp = &tables;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) spin_lock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) while (*tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (nls == *tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) *tmp = nls->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) spin_unlock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) tmp = &(*tmp)->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) spin_unlock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static struct nls_table *find_nls(char *charset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct nls_table *nls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) spin_lock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) for (nls = tables; nls; nls = nls->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (!strcmp(nls->charset, charset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (nls->alias && !strcmp(nls->alias, charset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (nls && !try_module_get(nls->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) nls = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) spin_unlock(&nls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return nls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct nls_table *load_nls(char *charset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) return try_then_request_module(find_nls(charset), "nls_%s", charset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) void unload_nls(struct nls_table *nls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (nls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) module_put(nls->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static const wchar_t charset2uni[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /* 0x00*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 0x0000, 0x0001, 0x0002, 0x0003,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 0x0004, 0x0005, 0x0006, 0x0007,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 0x0008, 0x0009, 0x000a, 0x000b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 0x000c, 0x000d, 0x000e, 0x000f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /* 0x10*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 0x0010, 0x0011, 0x0012, 0x0013,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 0x0014, 0x0015, 0x0016, 0x0017,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 0x0018, 0x0019, 0x001a, 0x001b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 0x001c, 0x001d, 0x001e, 0x001f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /* 0x20*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 0x0020, 0x0021, 0x0022, 0x0023,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 0x0024, 0x0025, 0x0026, 0x0027,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 0x0028, 0x0029, 0x002a, 0x002b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 0x002c, 0x002d, 0x002e, 0x002f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) /* 0x30*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 0x0030, 0x0031, 0x0032, 0x0033,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 0x0034, 0x0035, 0x0036, 0x0037,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 0x0038, 0x0039, 0x003a, 0x003b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 0x003c, 0x003d, 0x003e, 0x003f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /* 0x40*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 0x0040, 0x0041, 0x0042, 0x0043,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 0x0044, 0x0045, 0x0046, 0x0047,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 0x0048, 0x0049, 0x004a, 0x004b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 0x004c, 0x004d, 0x004e, 0x004f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* 0x50*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 0x0050, 0x0051, 0x0052, 0x0053,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 0x0054, 0x0055, 0x0056, 0x0057,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 0x0058, 0x0059, 0x005a, 0x005b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 0x005c, 0x005d, 0x005e, 0x005f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) /* 0x60*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 0x0060, 0x0061, 0x0062, 0x0063,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 0x0064, 0x0065, 0x0066, 0x0067,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 0x0068, 0x0069, 0x006a, 0x006b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 0x006c, 0x006d, 0x006e, 0x006f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /* 0x70*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 0x0070, 0x0071, 0x0072, 0x0073,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 0x0074, 0x0075, 0x0076, 0x0077,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 0x0078, 0x0079, 0x007a, 0x007b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 0x007c, 0x007d, 0x007e, 0x007f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* 0x80*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 0x0080, 0x0081, 0x0082, 0x0083,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 0x0084, 0x0085, 0x0086, 0x0087,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 0x0088, 0x0089, 0x008a, 0x008b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 0x008c, 0x008d, 0x008e, 0x008f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /* 0x90*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 0x0090, 0x0091, 0x0092, 0x0093,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 0x0094, 0x0095, 0x0096, 0x0097,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 0x0098, 0x0099, 0x009a, 0x009b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 0x009c, 0x009d, 0x009e, 0x009f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* 0xa0*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 0x00a0, 0x00a1, 0x00a2, 0x00a3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 0x00a4, 0x00a5, 0x00a6, 0x00a7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 0x00a8, 0x00a9, 0x00aa, 0x00ab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 0x00ac, 0x00ad, 0x00ae, 0x00af,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /* 0xb0*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 0x00b0, 0x00b1, 0x00b2, 0x00b3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 0x00b4, 0x00b5, 0x00b6, 0x00b7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 0x00b8, 0x00b9, 0x00ba, 0x00bb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 0x00bc, 0x00bd, 0x00be, 0x00bf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* 0xc0*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 0x00c0, 0x00c1, 0x00c2, 0x00c3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 0x00c4, 0x00c5, 0x00c6, 0x00c7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 0x00c8, 0x00c9, 0x00ca, 0x00cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 0x00cc, 0x00cd, 0x00ce, 0x00cf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) /* 0xd0*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 0x00d0, 0x00d1, 0x00d2, 0x00d3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 0x00d4, 0x00d5, 0x00d6, 0x00d7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 0x00d8, 0x00d9, 0x00da, 0x00db,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 0x00dc, 0x00dd, 0x00de, 0x00df,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /* 0xe0*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 0x00e0, 0x00e1, 0x00e2, 0x00e3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 0x00e4, 0x00e5, 0x00e6, 0x00e7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 0x00e8, 0x00e9, 0x00ea, 0x00eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 0x00ec, 0x00ed, 0x00ee, 0x00ef,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /* 0xf0*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 0x00f0, 0x00f1, 0x00f2, 0x00f3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 0x00f4, 0x00f5, 0x00f6, 0x00f7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 0x00f8, 0x00f9, 0x00fa, 0x00fb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 0x00fc, 0x00fd, 0x00fe, 0x00ff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) static const unsigned char page00[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static const unsigned char *const page_uni2charset[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) page00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static const unsigned char charset2lower[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x40-0x47 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x48-0x4f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x50-0x57 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0x60-0x67 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0x68-0x6f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0x70-0x77 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static const unsigned char charset2upper[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* 0x18-0x1f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* 0x20-0x27 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 0x28-0x2f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0x30-0x37 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 0x38-0x3f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x40-0x47 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x48-0x4f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x50-0x57 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* 0x58-0x5f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0x60-0x67 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0x68-0x6f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0x70-0x77 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 0x80-0x87 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* 0x88-0x8f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, /* 0x90-0x97 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* 0x98-0x9f */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0xd0-0xd7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, /* 0xd8-0xdf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xe8-0xef */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xf0-0xf7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) const unsigned char *uni2charset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) unsigned char cl = uni & 0x00ff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) unsigned char ch = (uni & 0xff00) >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (boundlen <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return -ENAMETOOLONG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) uni2charset = page_uni2charset[ch];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (uni2charset && uni2charset[cl])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) out[0] = uni2charset[cl];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) *uni = charset2uni[*rawstring];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (*uni == 0x0000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) static struct nls_table default_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) .charset = "default",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) .uni2char = uni2char,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) .char2uni = char2uni,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) .charset2lower = charset2lower,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) .charset2upper = charset2upper,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) /* Returns a simple default translation table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) struct nls_table *load_nls_default(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) struct nls_table *default_nls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) default_nls = load_nls(CONFIG_NLS_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (default_nls != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return default_nls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return &default_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) EXPORT_SYMBOL(unregister_nls);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) EXPORT_SYMBOL_NS(unload_nls, ANDROID_GKI_VFS_EXPORT_ONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) EXPORT_SYMBOL_NS(load_nls, ANDROID_GKI_VFS_EXPORT_ONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) EXPORT_SYMBOL_NS(load_nls_default, ANDROID_GKI_VFS_EXPORT_ONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) MODULE_LICENSE("Dual BSD/GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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