intr: Pass cpuid to register_int and unregister_int
[dragonfly.git] / sys / platform / vkernel64 / platform / shutdown.c
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1/*
2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $DragonFly: src/sys/platform/vkernel/platform/shutdown.c,v 1.1 2007/07/01 02:51:45 dillon Exp $
35 */
36/*
37 * Install a signal handler for SIGTERM which shuts down the virtual kernel
38 */
39
40#include "opt_ddb.h"
41#include <sys/types.h>
42#include <sys/systm.h>
43#include <sys/reboot.h>
44#include <sys/kernel.h>
45#include <sys/kthread.h>
46#include <sys/reboot.h>
47#include <sys/interrupt.h>
56f4b223 48#include <sys/bus.h>
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49#include <ddb/ddb.h>
50
51#include <sys/thread2.h>
52
53#include <machine/trap.h>
54#include <machine/md_var.h>
55#include <machine/segments.h>
56#include <machine/cpu.h>
57
58#include <err.h>
59#include <signal.h>
60#include <unistd.h>
61
62static void shutdownsig(int signo);
63static void shutdown_intr(void *arg __unused, void *frame __unused);
64
65static
66void
67initshutdown(void *arg __unused)
68{
69 struct sigaction sa;
70
71 bzero(&sa, sizeof(sa));
72 sigemptyset(&sa.sa_mask);
73 sa.sa_flags |= SA_NODEFER;
74 sa.sa_handler = shutdownsig;
75 sigaction(SIGTERM, &sa, NULL);
76
6355d931 77 register_int(2, shutdown_intr, NULL, "shutdown", NULL, INTR_MPSAFE, 0);
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78}
79
80static
81void
82shutdownsig(int signo)
83{
84 signalintr(2);
85}
86
87SYSINIT(initshutdown, SI_BOOT2_PROC0, SI_ORDER_ANY,
88 initshutdown, NULL);
89
90/*
91 * DragonFly-safe interrupt thread. We are the only handler on interrupt
92 * #2 so we can just steal the thread's context forever.
93 */
94static
95void
96shutdown_intr(void *arg __unused, void *frame __unused)
97{
98 kprintf("Caught SIGTERM from host system. Shutting down...\n");
99 if (initproc != NULL) {
100 ksignal(initproc, SIGUSR2);
101 } else {
102 reboot(RB_POWEROFF);
103 }
104}