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1c79356b 1/*
b0d623f7 2 * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
1c79356b 3 *
2d21ac55 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b 5 *
2d21ac55
A
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
8f6c56a5 14 *
2d21ac55
A
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5
A
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55
A
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
8f6c56a5 25 *
2d21ac55 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b
A
27 */
28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1982, 1986, 1989, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by the University of
44 * California, Berkeley and its contributors.
45 * 4. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93
62 */
2d21ac55
A
63/*
64 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
65 * support for mandatory and extensible security protections. This notice
66 * is included in support of clause 2.2 (b) of the Apple Public License,
67 * Version 2.0.
68 */
1c79356b 69
1c79356b
A
70#include <sys/param.h>
71#include <sys/systm.h>
72#include <sys/kernel.h>
91447636
A
73#include <sys/proc_internal.h>
74#include <sys/kauth.h>
1c79356b
A
75#include <sys/reboot.h>
76#include <sys/vm.h>
77#include <sys/sysctl.h>
78#include <sys/buf.h>
79
b0d623f7 80#include <security/audit/audit.h>
e5568f75 81
91447636
A
82#include <sys/mount_internal.h>
83#include <sys/sysproto.h>
2d21ac55
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84#if CONFIG_MACF
85#include <security/mac_framework.h>
86#endif
1c79356b 87
490019cf
A
88int pshm_cache_purge_all(proc_t p);
89int psem_cache_purge_all(proc_t p);
90
1c79356b 91int
39037602 92reboot(struct proc *p, struct reboot_args *uap, __unused int32_t *retval)
1c79356b 93{
3e170ce0 94 char message[128];
2d21ac55 95 int error=0;
b0d623f7 96 size_t dummy=0;
2d21ac55
A
97#if CONFIG_MACF
98 kauth_cred_t my_cred;
99#endif
1c79356b 100
e5568f75 101 AUDIT_ARG(cmd, uap->opt);
91447636 102
3e170ce0 103 message[0] = '\0';
1c79356b 104
5ba3f43e
A
105 if ((error = suser(kauth_cred_get(), &p->p_acflag))) {
106#if (DEVELOPMENT || DEBUG)
107 /* allow non-root user to call panic on dev/debug kernels */
108 if (!(uap->opt & RB_PANIC))
109 return error;
110#else
111 return error;
112#endif
113 }
114
1c79356b 115 if (uap->opt & RB_COMMAND)
3e170ce0
A
116 return ENOSYS;
117
118 if (uap->opt & RB_PANIC) {
3e170ce0
A
119 error = copyinstr(uap->command, (void *)message, sizeof(message), (size_t *)&dummy);
120 }
121
2d21ac55 122#if CONFIG_MACF
5ba3f43e
A
123#if (DEVELOPMENT || DEBUG)
124 if (uap->opt & RB_PANIC) {
125 /* on dev/debug kernels: allow anyone to call panic */
126 goto skip_cred_check;
127 }
128#endif
2d21ac55
A
129 if (error)
130 return (error);
131 my_cred = kauth_cred_proc_ref(p);
132 error = mac_system_check_reboot(my_cred, uap->opt);
133 kauth_cred_unref(&my_cred);
5ba3f43e
A
134#if (DEVELOPMENT || DEBUG)
135skip_cred_check:
136#endif
2d21ac55 137#endif
1c79356b 138 if (!error) {
b0d623f7 139 OSBitOrAtomic(P_REBOOT, &p->p_flag); /* No more signals for this proc */
3e170ce0 140 error = reboot_kernel(uap->opt, message);
1c79356b
A
141 }
142 return(error);
143}
490019cf
A
144
145int
39037602 146usrctl(struct proc *p, __unused struct usrctl_args *uap, __unused int32_t *retval)
490019cf
A
147{
148 if (p != initproc) {
149 return EPERM;
150 }
151
152 int error = 0;
153 error = pshm_cache_purge_all(p);
154 if (error)
155 return error;
156
157 error = psem_cache_purge_all(p);
158 return error;
159}