Function kread

tools/netstat/main.c:836–850

* Read kernel memory, return 0 on success. */

 * Read kernel memory, return 0 on success.
 */
int
kread(u_long addr, void *buf, size_t size)
{

	if (kvmd_init() < 0)
		return (-1);

	if (!buf)
		return (0);
	if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) {
		xo_warnx("%s", kvm_geterr(kvmd));
		return (-1);
	}
	return (0);
}

/*
 * Read single counter(9).