1/*	$NetBSD: miniroot.c,v 1.2 2008/11/16 15:46:10 ad Exp $	*/
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: miniroot.c,v 1.2 2008/11/16 15:46:10 ad Exp $");
31
32#include <sys/param.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35
36#include <dev/md.h>
37
38MODULE(MODULE_CLASS_MISC, miniroot, NULL);
39
40static int
41miniroot_modcmd(modcmd_t cmd, void *arg)
42{
43	void *addr;
44	int error;
45	size_t size;
46
47	switch (cmd) {
48	case MODULE_CMD_INIT:
49		error = module_find_section("miniroot", &addr, &size);
50		if (error == 0) {
51			if (size == 0) {
52				error = EINVAL;
53			} else {
54				md_root_setconf(addr, size);
55			}
56		}
57		return error;
58
59	case MODULE_CMD_FINI:
60		return EOPNOTSUPP;
61
62	default:
63		return ENOTTY;
64	}
65}
66