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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* openrc-shutdown.c
* If you are using OpenRC's provided init, this will shut down or
* reboot your system.
*
* This is based on code written by James Hammons <jlhamm@acm.org>, so
* I would like to publically thank him for his work.
*/
/*
* Copyright 2017 The OpenRC Authors.
* See the Authors file at the top-level directory of this distribution and
* https://github.com/OpenRC/openrc/blob/master/AUTHORS
*
* This file is part of OpenRC. It is subject to the license terms in
* the LICENSE file found in the top-level directory of this
* distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
* This file may not be copied, modified, propagated, or distributed
* except according to the terms contained in the LICENSE file.
*/
#include <getopt.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include "einfo.h"
#include "rc.h"
#include "helpers.h"
#include "_usage.h"
#include "rc-wtmp.h"
const char *applet = NULL;
const char *extraopts = NULL;
const char *getoptstring = "dDHKpRrw" getoptstring_COMMON;
const struct option longopts[] = {
{ "no-write", no_argument, NULL, 'd'},
{ "dry-run", no_argument, NULL, 'D'},
{ "halt", no_argument, NULL, 'H'},
{ "kexec", no_argument, NULL, 'K'},
{ "poweroff", no_argument, NULL, 'p'},
{ "reexec", no_argument, NULL, 'R'},
{ "reboot", no_argument, NULL, 'r'},
{ "write-only", no_argument, NULL, 'w'},
longopts_COMMON
};
const char * const longopts_help[] = {
"do not write wtmp record",
"print actions instead of executing them",
"halt the system",
"reboot the system using kexec",
"power off the system",
"re-execute init (use after upgrading)",
"reboot the system",
"write wtmp boot record and exit",
longopts_help_COMMON
};
const char *usagestring = NULL;
const char *exclusive = "Select one of "
"--halt, --kexec, --poweroff, --reexec or --reboot";
static bool do_dryrun = false;
static bool do_halt = false;
static bool do_kexec = false;
static bool do_poweroff = false;
static bool do_reboot = false;
static bool do_reexec = false;
static bool do_wtmp = true;
static bool do_wtmp_only = false;
static void send_cmd(const char *cmd)
{
FILE *fifo;
size_t ignored;
if (do_dryrun) {
einfo("Would send %s to init", cmd);
return;
}
if (do_wtmp && (do_halt || do_kexec || do_reboot || do_poweroff))
log_wtmp("shutdown", "~~", 0, RUN_LVL, "~~");
fifo = fopen(RC_INIT_FIFO, "w");
if (!fifo) {
perror("fopen");
return;
}
ignored = fwrite(cmd, 1, strlen(cmd), fifo);
if (ignored != strlen(cmd))
printf("Error writing to init fifo\n");
fclose(fifo);
}
int main(int argc, char **argv)
{
int opt;
int cmd_count = 0;
applet = basename_c(argv[0]);
while ((opt = getopt_long(argc, argv, getoptstring,
longopts, (int *) 0)) != -1)
{
switch (opt) {
case 'd':
do_wtmp = false;
break;
case 'D':
do_dryrun = true;
break;
case 'H':
do_halt = true;
cmd_count++;
break;
case 'K':
do_kexec = true;
cmd_count++;
break;
case 'p':
do_poweroff = true;
cmd_count++;
break;
case 'R':
do_reexec = true;
cmd_count++;
break;
case 'r':
do_reboot = true;
cmd_count++;
break;
case 'w':
do_wtmp_only = true;
break;
case_RC_COMMON_GETOPT
}
}
if (geteuid() != 0 && ! do_dryrun)
eerrorx("%s: you must be root\n", applet);
if (cmd_count > 1) {
eerror("%s: %s\n", applet, exclusive);
usage(EXIT_FAILURE);
}
if (do_halt)
send_cmd("halt");
else if (do_kexec)
send_cmd("kexec");
else if (do_poweroff)
send_cmd("poweroff");
else if (do_reboot)
send_cmd("reboot");
else if (do_reexec)
send_cmd("reexec");
else if (do_wtmp_only)
log_wtmp("shutdown", "~~", 0, RUN_LVL, "~~");
else
send_cmd("single");
return 0;
}
|
