| 1 |
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| 2 | #ifndef _LINUX_UNICODE_H
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| 3 | #define _LINUX_UNICODE_H
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| 4 |
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| 5 | #include <linux/init.h>
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| 6 | #include <linux/dcache.h>
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| 7 |
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| 8 | struct utf8data;
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| 9 | struct utf8data_table;
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| 10 |
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| 11 | #define UNICODE_MAJ_SHIFT 16
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| 12 | #define UNICODE_MIN_SHIFT 8
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| 13 |
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| 14 | #define UNICODE_AGE(MAJ, MIN, REV) \
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| 15 | (((unsigned int)(MAJ) << UNICODE_MAJ_SHIFT) | \
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| 16 | ((unsigned int)(MIN) << UNICODE_MIN_SHIFT) | \
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| 17 | ((unsigned int)(REV)))
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| 18 |
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| 19 | static inline u8 unicode_major(unsigned int age)
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| 20 | {
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| 21 | return (age >> UNICODE_MAJ_SHIFT) & 0xff;
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| 22 | }
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| 23 |
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| 24 | static inline u8 unicode_minor(unsigned int age)
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| 25 | {
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| 26 | return (age >> UNICODE_MIN_SHIFT) & 0xff;
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| 27 | }
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| 28 |
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| 29 | static inline u8 unicode_rev(unsigned int age)
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| 30 | {
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| 31 | return age & 0xff;
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| 32 | }
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| 33 |
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| 34 | |
| 35 | * Two normalization forms are supported:
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| 36 | * 1) NFDI
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| 37 | * - Apply unicode normalization form NFD.
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| 38 | * - Remove any Default_Ignorable_Code_Point.
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| 39 | * 2) NFDICF
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| 40 | * - Apply unicode normalization form NFD.
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| 41 | * - Remove any Default_Ignorable_Code_Point.
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| 42 | * - Apply a full casefold (C + F).
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| 43 |
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| 44 | enum utf8_normalization {
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| 45 | UTF8_NFDI = 0,
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| 46 | UTF8_NFDICF,
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| 47 | UTF8_NMAX,
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| 48 | };
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| 49 |
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| 50 | struct unicode_map {
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| 51 | unsigned int version;
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| 52 | const struct utf8data *ntab[UTF8_NMAX];
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| 53 | const struct utf8data_table *tables;
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| 54 | };
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| 55 |
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| 56 | int utf8_validate(const struct unicode_map *um, const struct qstr *str);
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| 57 |
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| 58 | int utf8_strncmp(const struct unicode_map *um,
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| 59 | const struct qstr *s1, const struct qstr *s2);
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| 60 |
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| 61 | int utf8_strncasecmp(const struct unicode_map *um,
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| 62 | const struct qstr *s1, const struct qstr *s2);
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| 63 | int utf8_strncasecmp_folded(const struct unicode_map *um,
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| 64 | const struct qstr *cf,
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| 65 | const struct qstr *s1);
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| 66 |
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| 67 | int utf8_normalize(const struct unicode_map *um, const struct qstr *str,
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| 68 | unsigned char *dest, size_t dlen);
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| 69 |
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| 70 | int utf8_casefold(const struct unicode_map *um, const struct qstr *str,
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| 71 | unsigned char *dest, size_t dlen);
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| 72 |
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| 73 | int utf8_casefold_hash(const struct unicode_map *um, const void *salt,
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| 74 | struct qstr *str);
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| 75 |
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| 76 | struct unicode_map *utf8_load(unsigned int version);
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| 77 | void utf8_unload(struct unicode_map *um);
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| 78 |
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| 79 | #endif
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