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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: t -*-*/
/*
* wdctl(8) - show hardware watchdog status
*
* Copyright (C) 2012 Lennart Poettering
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <linux/watchdog.h>
#include <sys/ioctl.h>
#include <getopt.h>
#include <stdio.h>
#include <unistd.h>
#include "nls.h"
#include "c.h"
#include "closestream.h"
#include "pathnames.h"
static const struct {
uint32_t flag;
const char *name;
} flag_names[] = {
{ WDIOF_OVERHEAT, N_("OVERHEAT: Reset due to CPU overheat") },
{ WDIOF_FANFAULT, N_("FANFAULT: Fan failed") },
{ WDIOF_EXTERN1, N_("EXTERN1: External relay 1") },
{ WDIOF_EXTERN2, N_("EXTERN2: External relay 2") },
{ WDIOF_POWERUNDER, N_("POWERUNDER: Power bad/power fault") },
{ WDIOF_CARDRESET, N_("CARDRESET: Card previously reset the CPU") },
{ WDIOF_POWEROVER, N_("POWEROVER: Power over voltage") },
{ WDIOF_SETTIMEOUT, N_("SETTIMEOUT: Set timeout (in seconds)") },
{ WDIOF_MAGICCLOSE, N_("MAGICCLOSE: Supports magic close char") },
{ WDIOF_PRETIMEOUT, N_("PRETIMEOUT: Pretimeout (in seconds)") },
{ WDIOF_KEEPALIVEPING, N_("KEEPALIVEPING: Keep alive ping reply") }
};
static void usage(int status)
{
FILE *out = status == EXIT_SUCCESS ? stdout : stderr;
fputs(USAGE_HEADER, out);
fprintf(out,
_(" %s [options]\n"), program_invocation_short_name);
fputs(USAGE_OPTIONS, out);
fprintf(out,
_(" -d, --device <path> device to use (default is %s)\n"), _PATH_WATCHDOG_DEV);
fputs(USAGE_SEPARATOR, out);
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("wdctl(1)"));
exit(status);
}
static void print_options(uint32_t options)
{
unsigned i;
if (options == 0) {
puts(_("\tNo flags set."));
return;
}
for (i = 0; i < ARRAY_SIZE(flag_names); i++) {
if (options & flag_names[i].flag)
printf("\t%s\n", _(flag_names[i].name));
options &= ~flag_names[i].flag;
}
if (options)
printf(_("\tUnknown flags 0x%x\n"), options);
}
int main(int argc, char *argv[])
{
static const struct option longopts[] = {
{ "help", no_argument, 0, 'h' },
{ "version", no_argument, 0, 'V'},
{ "device", required_argument, 0, 'd' },
{ NULL, 0, 0, 0 }
};
int c, status, sec, fd;
const char *device = _PATH_WATCHDOG_DEV;
struct watchdog_info ident;
setlocale(LC_MESSAGES, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while((c = getopt_long(argc, argv, "hVd:", longopts, NULL)) != -1) {
switch(c) {
case 'h':
usage(EXIT_SUCCESS);
case 'V':
printf(UTIL_LINUX_VERSION);
return EXIT_SUCCESS;
case 'd':
device = optarg;
break;
default:
usage(EXIT_FAILURE);
}
}
if (optind < argc)
usage(EXIT_FAILURE);
fd = open(device, O_WRONLY|O_CLOEXEC);
if (fd < 0) {
if (errno == EBUSY)
errx(EXIT_FAILURE, _("Watchdog already in use, terminating."));
err(EXIT_FAILURE, _("Failed to open watchdog device"));
}
if (ioctl(fd, WDIOC_GETSUPPORT, &ident) >= 0) {
printf(_("Identity:\n\t%s\n"
"Firmware version:\n\t%x\n"
"Supported options:\n"),
ident.identity,
ident.firmware_version);
print_options(ident.options);
}
if (ioctl(fd, WDIOC_GETSTATUS, &status) >= 0) {
puts(_("Status:"));
print_options((uint32_t) status);
}
if (ioctl(fd, WDIOC_GETBOOTSTATUS, &status) >= 0) {
puts(_("Boot status:"));
print_options((uint32_t) status);
}
if (ioctl(fd, WDIOC_GETTIMEOUT, &sec) >= 0)
printf(_("Timeout:\n\t%is\n"), sec);
if (ioctl(fd, WDIOC_GETPRETIMEOUT, &sec) >= 0)
printf(_("Pre-Timeout:\n\t%is\n"), sec);
if (ioctl(fd, WDIOC_GETTIMELEFT, &sec) >= 0)
printf(_("Time Left:\n\t%is\n"), sec);
for (;;) {
/* We just opened this to query the state, not to arm
* it hence use the magic close character */
static const char v = 'V';
if (write(fd, &v, 1) >= 0)
break;
if (errno != EINTR) {
warn(_("Failed to disarm watchdog"));
break;
}
/* Let's try hard, since if we don't get this right
* the machine might end up rebooting. */
}
close(fd);
return EXIT_SUCCESS;
}
|
