xref: /onnv-gate/usr/src/ucblib/libucb/port/sys/reboot.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright (c) 1997, by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate  * All rights reserved.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate /* 	Portions Copyright(c) 1988, Sun Microsystems Inc.	*/
32*0Sstevel@tonic-gate /*	All Rights Reserved					*/
33*0Sstevel@tonic-gate 
34*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.2	*/
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate /*LINTLIBRARY*/
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate #include <sys/types.h>
39*0Sstevel@tonic-gate #include <sys/uadmin.h>
40*0Sstevel@tonic-gate #include <unistd.h>
41*0Sstevel@tonic-gate #include <errno.h>
42*0Sstevel@tonic-gate 
43*0Sstevel@tonic-gate /*
44*0Sstevel@tonic-gate  * Not all BSD's semantics are supported
45*0Sstevel@tonic-gate  * including RB_SINGLE, RB_RB_DUMP, RB_STRING
46*0Sstevel@tonic-gate  */
47*0Sstevel@tonic-gate 
48*0Sstevel@tonic-gate /*
49*0Sstevel@tonic-gate  * BSD reboot.h
50*0Sstevel@tonic-gate  */
51*0Sstevel@tonic-gate #define	RB_AUTOBOOT	0	/* flags for system auto-booting itself */
52*0Sstevel@tonic-gate 
53*0Sstevel@tonic-gate #define	RB_ASKNAME	0x001   /* ask for file name to reboot from */
54*0Sstevel@tonic-gate #define	RB_SINGLE	0x002   /* reboot to single user only */
55*0Sstevel@tonic-gate #define	RB_NOSYNC	0x004   /* dont sync before reboot */
56*0Sstevel@tonic-gate #define	RB_HALT		0x008   /* don't reboot, just halt */
57*0Sstevel@tonic-gate #define	RB_INITNAME	0x010   /* name given for /etc/init */
58*0Sstevel@tonic-gate #define	RB_NOBOOTRC	0x020   /* don't run /etc/rc.boot */
59*0Sstevel@tonic-gate #define	RB_DEBUG	0x040   /* being run under debugger */
60*0Sstevel@tonic-gate #define	RB_DUMP		0x080   /* dump system core */
61*0Sstevel@tonic-gate #define	RB_WRITABLE	0x100   /* mount root read/write */
62*0Sstevel@tonic-gate #define	RB_STRING	0x200   /* pass boot args to prom monitor */
63*0Sstevel@tonic-gate 
64*0Sstevel@tonic-gate /*ARGSUSED*/
65*0Sstevel@tonic-gate int
reboot(int howto,char * bootargs)66*0Sstevel@tonic-gate reboot(int howto, char *bootargs)
67*0Sstevel@tonic-gate {
68*0Sstevel@tonic-gate 	int	cmd;
69*0Sstevel@tonic-gate 	int	fcn;
70*0Sstevel@tonic-gate 	int	mdep = 0;
71*0Sstevel@tonic-gate 
72*0Sstevel@tonic-gate 	if (getuid() != 0) {
73*0Sstevel@tonic-gate 		errno = EPERM;
74*0Sstevel@tonic-gate 		return (-1);
75*0Sstevel@tonic-gate 	}
76*0Sstevel@tonic-gate 
77*0Sstevel@tonic-gate 	if (howto & RB_HALT) {
78*0Sstevel@tonic-gate 		cmd = A_SHUTDOWN;
79*0Sstevel@tonic-gate 		fcn = AD_HALT;
80*0Sstevel@tonic-gate 	} else if (howto & RB_ASKNAME) {
81*0Sstevel@tonic-gate 		cmd = A_SHUTDOWN;
82*0Sstevel@tonic-gate 		fcn = AD_IBOOT;
83*0Sstevel@tonic-gate 	} else {		/* assume RB_AUTOBOOT */
84*0Sstevel@tonic-gate 		cmd = A_SHUTDOWN;
85*0Sstevel@tonic-gate 		fcn = AD_BOOT;
86*0Sstevel@tonic-gate 	}
87*0Sstevel@tonic-gate 
88*0Sstevel@tonic-gate 	/* return something to be consistent with the original prototype */
89*0Sstevel@tonic-gate 	return (uadmin(cmd, fcn, mdep));
90*0Sstevel@tonic-gate 		/* most cases, we are gone and code does not reach here */
91*0Sstevel@tonic-gate }
92