void
__init_stack_protector()
{
	if (__stack_chk_guard != 0)
		return;

	bool done = false;
	int fd = open("/dev/random", O_RDONLY, 0);
	if (fd >= 0) {
		done = read(fd, &__stack_chk_guard, sizeof(__stack_chk_guard))
			== sizeof(__stack_chk_guard);
		close(fd);
	}

	if (!done) {
		((unsigned char *)(void *)__stack_chk_guard)[0] = 0;
		((unsigned char *)(void *)__stack_chk_guard)[1] = 0;
		((unsigned char *)(void *)__stack_chk_guard)[2] = '\n';
		((unsigned char *)(void *)__stack_chk_guard)[3] = 0xff;
	}
}