Function strndup

freebsd/libkern/strndup.c:40–51

#include <sys/malloc.h>

char *
strndup(const char *string, size_t maxlen, struct malloc_type *type)
{
	size_t len;
	char *copy;

	len = strnlen(string, maxlen) + 1;
	copy = malloc(len, type, M_WAITOK);
	bcopy(string, copy, len);
	copy[len - 1] = '\0';
	return (copy);
}