forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
#ifndef _LINUX_NLS_H
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#define _LINUX_NLS_H
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#include <linux/init.h>
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/* Unicode has changed over the years. Unicode code points no longer
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* fit into 16 bits; as of Unicode 5 valid code points range from 0
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* to 0x10ffff (17 planes, where each plane holds 65536 code points).
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*
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* The original decision to represent Unicode characters as 16-bit
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* wchar_t values is now outdated. But plane 0 still includes the
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* most commonly used characters, so we will retain it. The newer
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* 32-bit unicode_t type can be used when it is necessary to
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* represent the full Unicode character set.
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*/
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/* Plane-0 Unicode character */
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typedef u16 wchar_t;
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#define MAX_WCHAR_T 0xffff
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/* Arbitrary Unicode character */
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typedef u32 unicode_t;
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struct nls_table {
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const char *charset;
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const char *alias;
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int (*uni2char) (wchar_t uni, unsigned char *out, int boundlen);
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int (*char2uni) (const unsigned char *rawstring, int boundlen,
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wchar_t *uni);
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const unsigned char *charset2lower;
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const unsigned char *charset2upper;
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struct module *owner;
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struct nls_table *next;
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} __do_const;
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/* this value hold the maximum octet of charset */
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#define NLS_MAX_CHARSET_SIZE 6 /* for UTF-8 */
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/* Byte order for UTF-16 strings */
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enum utf16_endian {
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UTF16_HOST_ENDIAN,
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UTF16_LITTLE_ENDIAN,
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UTF16_BIG_ENDIAN
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};
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/* nls_base.c */
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extern int __register_nls(struct nls_table *, struct module *);
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extern int unregister_nls(struct nls_table *);
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extern struct nls_table *load_nls(const char *);
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extern void unload_nls(struct nls_table *);
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extern struct nls_table *load_nls_default(void);
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#define register_nls(nls) __register_nls((nls), THIS_MODULE)
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extern int utf8_to_utf32(const u8 *s, int len, unicode_t *pu);
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extern int utf32_to_utf8(unicode_t u, u8 *s, int maxlen);
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extern int utf8s_to_utf16s(const u8 *s, int len,
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enum utf16_endian endian, wchar_t *pwcs, int maxlen);
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extern int utf16s_to_utf8s(const wchar_t *pwcs, int len,
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enum utf16_endian endian, u8 *s, int maxlen);
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static inline unsigned char nls_tolower(struct nls_table *t, unsigned char c)
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{
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unsigned char nc = t->charset2lower[c];
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return nc ? nc : c;
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}
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static inline unsigned char nls_toupper(struct nls_table *t, unsigned char c)
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{
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unsigned char nc = t->charset2upper[c];
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return nc ? nc : c;
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}
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static inline int nls_strnicmp(struct nls_table *t, const unsigned char *s1,
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const unsigned char *s2, int len)
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{
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while (len--) {
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if (nls_tolower(t, *s1++) != nls_tolower(t, *s2++))
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return 1;
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}
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return 0;
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}
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/*
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* nls_nullsize - return length of null character for codepage
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* @codepage - codepage for which to return length of NULL terminator
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*
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* Since we can't guarantee that the null terminator will be a particular
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* length, we have to check against the codepage. If there's a problem
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* determining it, assume a single-byte NULL terminator.
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*/
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static inline int
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nls_nullsize(const struct nls_table *codepage)
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{
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int charlen;
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char tmp[NLS_MAX_CHARSET_SIZE];
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charlen = codepage->uni2char(0, tmp, NLS_MAX_CHARSET_SIZE);
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return charlen > 0 ? charlen : 1;
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}
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#define MODULE_ALIAS_NLS(name) MODULE_ALIAS("nls_" __stringify(name))
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#endif /* _LINUX_NLS_H */
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