Function strnlen

freebsd/libkern/strnlen.c:34–44

#include <sys/libkern.h>

size_t
strnlen(const char *s, size_t maxlen)
{
	size_t len;

	for (len = 0; len < maxlen; len++, s++) {
		if (!*s)
			break;
	}
	return (len);
}