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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/reboot.h>
#include "bus-error.h"
#include "bus-util.h"
#include "emergency-action.h"
#include "raw-reboot.h"
#include "reboot-util.h"
#include "special.h"
#include "string-table.h"
#include "terminal-util.h"
#include "virt.h"
static const char* const emergency_action_table[_EMERGENCY_ACTION_MAX] = {
[EMERGENCY_ACTION_NONE] = "none",
[EMERGENCY_ACTION_REBOOT] = "reboot",
[EMERGENCY_ACTION_REBOOT_FORCE] = "reboot-force",
[EMERGENCY_ACTION_REBOOT_IMMEDIATE] = "reboot-immediate",
[EMERGENCY_ACTION_POWEROFF] = "poweroff",
[EMERGENCY_ACTION_POWEROFF_FORCE] = "poweroff-force",
[EMERGENCY_ACTION_POWEROFF_IMMEDIATE] = "poweroff-immediate",
[EMERGENCY_ACTION_EXIT] = "exit",
[EMERGENCY_ACTION_EXIT_FORCE] = "exit-force",
[EMERGENCY_ACTION_SOFT_REBOOT] = "soft-reboot",
[EMERGENCY_ACTION_SOFT_REBOOT_FORCE] = "soft-reboot-force",
[EMERGENCY_ACTION_KEXEC] = "kexec",
[EMERGENCY_ACTION_KEXEC_FORCE] = "kexec-force",
[EMERGENCY_ACTION_HALT] = "halt",
[EMERGENCY_ACTION_HALT_FORCE] = "halt-force",
[EMERGENCY_ACTION_HALT_IMMEDIATE] = "halt-immediate",
};
static void log_and_status(Manager *m, bool warn, const char *message, const char *reason) {
log_full(warn ? LOG_WARNING : LOG_DEBUG, "%s: %s", message, reason);
if (warn)
manager_status_printf(m, STATUS_TYPE_EMERGENCY,
ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
"%s: %s", message, reason);
}
void emergency_action(
Manager *m,
EmergencyAction action,
EmergencyActionFlags options,
const char *reboot_arg,
int exit_status,
const char *reason) {
Unit *u;
assert(m);
assert(action >= 0);
assert(action < _EMERGENCY_ACTION_MAX);
/* Is the special shutdown target active or queued? If so, we are in shutdown state */
if (IN_SET(action,
EMERGENCY_ACTION_REBOOT,
EMERGENCY_ACTION_SOFT_REBOOT,
EMERGENCY_ACTION_POWEROFF,
EMERGENCY_ACTION_EXIT,
EMERGENCY_ACTION_KEXEC,
EMERGENCY_ACTION_HALT)) {
u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
if (u && unit_active_or_pending(u)) {
log_notice("Shutdown is already active. Skipping emergency action request %s.",
emergency_action_table[action]);
return;
}
}
if (action == EMERGENCY_ACTION_NONE)
return;
if (FLAGS_SET(options, EMERGENCY_ACTION_IS_WATCHDOG) && !m->service_watchdogs) {
log_warning("Watchdog disabled! Not acting on: %s", reason);
return;
}
bool warn = FLAGS_SET(options, EMERGENCY_ACTION_WARN);
switch (action) {
case EMERGENCY_ACTION_REBOOT:
log_and_status(m, warn, "Rebooting", reason);
(void) update_reboot_parameter_and_warn(reboot_arg, true);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
break;
case EMERGENCY_ACTION_REBOOT_FORCE:
log_and_status(m, warn, "Forcibly rebooting", reason);
(void) update_reboot_parameter_and_warn(reboot_arg, true);
m->objective = MANAGER_REBOOT;
break;
case EMERGENCY_ACTION_REBOOT_IMMEDIATE:
log_and_status(m, warn, "Rebooting immediately", reason);
sync();
if (!isempty(reboot_arg)) {
log_info("Rebooting with argument '%s'.", reboot_arg);
(void) raw_reboot(LINUX_REBOOT_CMD_RESTART2, reboot_arg);
log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m");
}
log_info("Rebooting.");
(void) reboot(RB_AUTOBOOT);
break;
case EMERGENCY_ACTION_SOFT_REBOOT:
log_and_status(m, warn, "Soft-rebooting", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_SOFT_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
break;
case EMERGENCY_ACTION_SOFT_REBOOT_FORCE:
log_and_status(m, warn, "Forcibly soft-rebooting", reason);
m->objective = MANAGER_SOFT_REBOOT;
break;
case EMERGENCY_ACTION_EXIT:
if (exit_status >= 0)
m->return_value = exit_status;
if (MANAGER_IS_USER(m) || detect_container() > 0) {
log_and_status(m, warn, "Exiting", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
break;
}
log_notice("Doing \"poweroff\" action instead of an \"exit\" emergency action.");
_fallthrough_;
case EMERGENCY_ACTION_POWEROFF:
log_and_status(m, warn, "Powering off", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
break;
case EMERGENCY_ACTION_EXIT_FORCE:
if (exit_status >= 0)
m->return_value = exit_status;
if (MANAGER_IS_USER(m) || detect_container() > 0) {
log_and_status(m, warn, "Exiting immediately", reason);
m->objective = MANAGER_EXIT;
break;
}
log_notice("Doing \"poweroff-force\" action instead of an \"exit-force\" emergency action.");
_fallthrough_;
case EMERGENCY_ACTION_POWEROFF_FORCE:
log_and_status(m, warn, "Forcibly powering off", reason);
m->objective = MANAGER_POWEROFF;
break;
case EMERGENCY_ACTION_POWEROFF_IMMEDIATE:
log_and_status(m, warn, "Powering off immediately", reason);
sync();
log_info("Powering off.");
(void) reboot(RB_POWER_OFF);
break;
case EMERGENCY_ACTION_KEXEC:
log_and_status(m, warn, "Executing kexec", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
break;
case EMERGENCY_ACTION_KEXEC_FORCE:
log_and_status(m, warn, "Forcibly executing kexec", reason);
m->objective = MANAGER_KEXEC;
break;
case EMERGENCY_ACTION_HALT:
log_and_status(m, warn, "Halting", reason);
(void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
break;
case EMERGENCY_ACTION_HALT_FORCE:
log_and_status(m, warn, "Forcibly halting", reason);
m->objective = MANAGER_HALT;
break;
case EMERGENCY_ACTION_HALT_IMMEDIATE:
log_and_status(m, warn, "Halting immediately", reason);
sync();
log_info("Halting.");
(void) reboot(RB_HALT_SYSTEM);
break;
default:
assert_not_reached();
}
}
DEFINE_STRING_TABLE_LOOKUP(emergency_action, EmergencyAction);
int parse_emergency_action(
const char *value,
RuntimeScope runtime_scope,
EmergencyAction *ret) {
EmergencyAction x;
x = emergency_action_from_string(value);
if (x < 0)
return -EINVAL;
if (runtime_scope != RUNTIME_SCOPE_SYSTEM && x != EMERGENCY_ACTION_NONE && x < _EMERGENCY_ACTION_FIRST_USER_ACTION)
return -EOPNOTSUPP;
*ret = x;
return 0;
}
|
