reboot.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1997, by Sun Microsystems, Inc.
* All rights reserved.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/* Portions Copyright(c) 1988, Sun Microsystems Inc. */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */
/*LINTLIBRARY*/
#include <sys/types.h>
#include <sys/uadmin.h>
#include <unistd.h>
#include <errno.h>
/*
* Not all BSD's semantics are supported
* including RB_SINGLE, RB_RB_DUMP, RB_STRING
*/
/*
* BSD reboot.h
*/
#define RB_AUTOBOOT 0 /* flags for system auto-booting itself */
#define RB_ASKNAME 0x001 /* ask for file name to reboot from */
#define RB_SINGLE 0x002 /* reboot to single user only */
#define RB_NOSYNC 0x004 /* dont sync before reboot */
#define RB_HALT 0x008 /* don't reboot, just halt */
#define RB_INITNAME 0x010 /* name given for /etc/init */
#define RB_NOBOOTRC 0x020 /* don't run /etc/rc.boot */
#define RB_DEBUG 0x040 /* being run under debugger */
#define RB_DUMP 0x080 /* dump system core */
#define RB_WRITABLE 0x100 /* mount root read/write */
#define RB_STRING 0x200 /* pass boot args to prom monitor */
/*ARGSUSED*/
int
reboot(int howto, char *bootargs)
{
int cmd;
int fcn;
int mdep = 0;
if (getuid() != 0) {
errno = EPERM;
return (-1);
}
if (howto & RB_HALT) {
cmd = A_SHUTDOWN;
fcn = AD_HALT;
} else if (howto & RB_ASKNAME) {
cmd = A_SHUTDOWN;
fcn = AD_IBOOT;
} else { /* assume RB_AUTOBOOT */
cmd = A_SHUTDOWN;
fcn = AD_BOOT;
}
/* return something to be consistent with the original prototype */
return (uadmin(cmd, fcn, mdep));
/* most cases, we are gone and code does not reach here */
}