#include <linux/ucs2_string.h> #include <linux/module.h> /* Return the number of unicode characters in data */ unsigned long ucs2_strnlen(const ucs2_char_t *s, size_t maxlength) { unsigned long length = 0; while (*s++ != 0 && length < maxlength) length++; return length; } EXPORT_SYMBOL(ucs2_strnlen); unsigned long ucs2_strlen(const ucs2_char_t *s) { return ucs2_strnlen(s, ~0UL); } EXPORT_SYMBOL(ucs2_strlen); /* * Return the number of bytes is the length of this string * Note: this is NOT the same as the number of unicode characters */ unsigned long ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength) { return ucs2_strnlen(data, maxlength/sizeof(ucs2_char_t)) * sizeof(ucs2_char_t); } EXPORT_SYMBOL(ucs2_strsize); int ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len) { while (1) { if (len == 0) return 0; if (*a < *b) return -1; if (*a > *b) return 1; if (*a == 0) /* implies *b == 0 */ return 0; a++; b++; len--; } } EXPORT_SYMBOL(ucs2_strncmp);