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
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <unistd.h>
#include "sd-messages.h"
#include "conf-parser.h"
#include "special.h"
#include "sleep-config.h"
#include "bus-util.h"
#include "bus-error.h"
#include "logind-action.h"
int manager_handle_action(
Manager *m,
InhibitWhat inhibit_key,
HandleAction handle,
bool ignore_inhibited,
bool is_edge) {
static const char * const message_table[_HANDLE_ACTION_MAX] = {
[HANDLE_POWEROFF] = "Powering Off...",
[HANDLE_REBOOT] = "Rebooting...",
[HANDLE_HALT] = "Halting...",
[HANDLE_KEXEC] = "Rebooting via kexec...",
[HANDLE_SUSPEND] = "Suspending...",
[HANDLE_HIBERNATE] = "Hibernating...",
[HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
};
static const char * const target_table[_HANDLE_ACTION_MAX] = {
[HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
[HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
[HANDLE_HALT] = SPECIAL_HALT_TARGET,
[HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
[HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
[HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
[HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
};
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
InhibitWhat inhibit_operation;
Inhibitor *offending = NULL;
bool supported;
int r;
assert(m);
/* If the key handling is turned off, don't do anything */
if (handle == HANDLE_IGNORE) {
log_debug("Refusing operation, as it is turned off.");
return 0;
}
if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
/* If the last system suspend or startup is too close,
* let's not suspend for now, to give USB docking
* stations some time to settle so that we can
* properly watch its displays. */
if (m->lid_switch_ignore_event_source) {
log_debug("Ignoring lid switch request, system startup or resume too close.");
return 0;
}
}
/* If the key handling is inhibited, don't do anything */
if (inhibit_key > 0) {
if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key));
return 0;
}
}
/* Locking is handled differently from the rest. */
if (handle == HANDLE_LOCK) {
if (!is_edge)
return 0;
log_info("Locking sessions...");
session_send_lock_all(m, true);
return 1;
}
if (handle == HANDLE_SUSPEND)
supported = can_sleep("suspend") > 0;
else if (handle == HANDLE_HIBERNATE)
supported = can_sleep("hibernate") > 0;
else if (handle == HANDLE_HYBRID_SLEEP)
supported = can_sleep("hybrid-sleep") > 0;
else if (handle == HANDLE_KEXEC)
supported = access(KEXEC, X_OK) >= 0;
else
supported = true;
if (!supported) {
log_warning("Requested operation not supported, ignoring.");
return -ENOTSUP;
}
if (m->action_what) {
log_debug("Action already in progress, ignoring.");
return -EALREADY;
}
inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
/* If the actual operation is inhibited, warn and fail */
if (!ignore_inhibited &&
manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
_cleanup_free_ char *comm = NULL, *u = NULL;
get_process_comm(offending->pid, &comm);
u = uid_to_name(offending->uid);
/* If this is just a recheck of the lid switch then don't warn about anything */
if (!is_edge) {
log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
inhibit_what_to_string(inhibit_operation),
offending->uid, strna(u),
offending->pid, strna(comm));
return 0;
}
log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
inhibit_what_to_string(inhibit_operation),
offending->uid, strna(u),
offending->pid, strna(comm));
warn_melody();
return -EPERM;
}
log_info("%s", message_table[handle]);
r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error);
if (r < 0) {
log_error("Failed to execute operation: %s", bus_error_message(&error, r));
return r;
}
return 1;
}
static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
[HANDLE_IGNORE] = "ignore",
[HANDLE_POWEROFF] = "poweroff",
[HANDLE_REBOOT] = "reboot",
[HANDLE_HALT] = "halt",
[HANDLE_KEXEC] = "kexec",
[HANDLE_SUSPEND] = "suspend",
[HANDLE_HIBERNATE] = "hibernate",
[HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
[HANDLE_LOCK] = "lock"
};
DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");
|
