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