1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/* $OpenBSD: kern_xxx.c,v 1.28 2015/03/14 03:38:50 jsg Exp $ */
/* $NetBSD: kern_xxx.c,v 1.32 1996/04/22 01:38:41 christos Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/reboot.h>
#include <sys/sysctl.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
/* ARGSUSED */
int
sys_reboot(struct proc *p, void *v, register_t *retval)
{
struct sys_reboot_args /* {
syscallarg(int) opt;
} */ *uap = v;
int error;
if ((error = suser(p, 0)) != 0)
return (error);
#ifdef MULTIPROCESSOR
sched_stop_secondary_cpus();
KASSERT(CPU_IS_PRIMARY(curcpu()));
#endif
reboot(SCARG(uap, opt));
/* NOTREACHED */
return (0);
}
__dead void
reboot(int howto)
{
KASSERT((howto & RB_NOSYNC) || curproc != NULL);
boot(howto);
/* NOTREACHED */
}
#if !defined(NO_PROPOLICE)
void __stack_smash_handler(char [], int __attribute__((unused)));
void
__stack_smash_handler(char func[], int damaged)
{
panic("smashed stack in %s", func);
}
#endif
#ifdef SYSCALL_DEBUG
#define SCDEBUG_CALLS 0x0001 /* show calls */
#define SCDEBUG_RETURNS 0x0002 /* show returns */
#define SCDEBUG_ALL 0x0004 /* even syscalls that are implemented */
#define SCDEBUG_SHOWARGS 0x0008 /* show arguments to calls */
int scdebug = SCDEBUG_CALLS|SCDEBUG_RETURNS|SCDEBUG_SHOWARGS;
void
scdebug_call(struct proc *p, register_t code, const register_t args[])
{
struct sysent *sy;
struct emul *em;
int i;
if (!(scdebug & SCDEBUG_CALLS))
return;
em = p->p_p->ps_emul;
sy = &em->e_sysent[code];
if (!(scdebug & SCDEBUG_ALL || code < 0 || code >= em->e_nsysent ||
sy->sy_call == sys_nosys))
return;
printf("proc %d (%s): %s num ", p->p_pid, p->p_comm, em->e_name);
if (code < 0 || code >= em->e_nsysent)
printf("OUT OF RANGE (%d)", code);
else {
printf("%d call: %s", code, em->e_syscallnames[code]);
if (scdebug & SCDEBUG_SHOWARGS) {
printf("(");
for (i = 0; i < sy->sy_argsize / sizeof(register_t);
i++)
printf("%s0x%lx", i == 0 ? "" : ", ",
(long)args[i]);
printf(")");
}
}
printf("\n");
}
void
scdebug_ret(struct proc *p, register_t code, int error,
const register_t retval[])
{
struct sysent *sy;
struct emul *em;
if (!(scdebug & SCDEBUG_RETURNS))
return;
em = p->p_p->ps_emul;
sy = &em->e_sysent[code];
if (!(scdebug & SCDEBUG_ALL || code < 0 || code >= em->e_nsysent ||
sy->sy_call == sys_nosys))
return;
printf("proc %d (%s): %s num ", p->p_pid, p->p_comm, em->e_name);
if (code < 0 || code >= em->e_nsysent)
printf("OUT OF RANGE (%d)", code);
else
printf("%d ret: err = %d, rv = 0x%lx,0x%lx", code,
error, (long)retval[0], (long)retval[1]);
printf("\n");
}
#endif /* SYSCALL_DEBUG */
|
