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