Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 :
3 : #include <unistd.h>
4 :
5 : #include "alloc-util.h"
6 : #include "bus-error.h"
7 : #include "bus-util.h"
8 : #include "conf-parser.h"
9 : #include "format-util.h"
10 : #include "logind-action.h"
11 : #include "logind-dbus.h"
12 : #include "logind-session-dbus.h"
13 : #include "process-util.h"
14 : #include "sleep-config.h"
15 : #include "special.h"
16 : #include "string-table.h"
17 : #include "terminal-util.h"
18 : #include "user-util.h"
19 :
20 0 : const char* manager_target_for_action(HandleAction handle) {
21 : static const char * const target_table[_HANDLE_ACTION_MAX] = {
22 : [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
23 : [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
24 : [HANDLE_HALT] = SPECIAL_HALT_TARGET,
25 : [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
26 : [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
27 : [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
28 : [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET,
29 : [HANDLE_SUSPEND_THEN_HIBERNATE] = SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET,
30 : };
31 :
32 0 : assert(handle >= 0);
33 0 : if (handle < (ssize_t) ELEMENTSOF(target_table))
34 0 : return target_table[handle];
35 0 : return NULL;
36 : }
37 :
38 0 : int manager_handle_action(
39 : Manager *m,
40 : InhibitWhat inhibit_key,
41 : HandleAction handle,
42 : bool ignore_inhibited,
43 : bool is_edge) {
44 :
45 : static const char * const message_table[_HANDLE_ACTION_MAX] = {
46 : [HANDLE_POWEROFF] = "Powering Off...",
47 : [HANDLE_REBOOT] = "Rebooting...",
48 : [HANDLE_HALT] = "Halting...",
49 : [HANDLE_KEXEC] = "Rebooting via kexec...",
50 : [HANDLE_SUSPEND] = "Suspending...",
51 : [HANDLE_HIBERNATE] = "Hibernating...",
52 : [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending...",
53 : [HANDLE_SUSPEND_THEN_HIBERNATE] = "Suspending, then hibernating...",
54 : };
55 :
56 0 : _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
57 : InhibitWhat inhibit_operation;
58 0 : Inhibitor *offending = NULL;
59 : bool supported;
60 : const char *target;
61 : int r;
62 :
63 0 : assert(m);
64 :
65 : /* If the key handling is turned off, don't do anything */
66 0 : if (handle == HANDLE_IGNORE) {
67 0 : log_debug("Refusing operation, as it is turned off.");
68 0 : return 0;
69 : }
70 :
71 0 : if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
72 : /* If the last system suspend or startup is too close,
73 : * let's not suspend for now, to give USB docking
74 : * stations some time to settle so that we can
75 : * properly watch its displays. */
76 0 : if (m->lid_switch_ignore_event_source) {
77 0 : log_debug("Ignoring lid switch request, system startup or resume too close.");
78 0 : return 0;
79 : }
80 : }
81 :
82 : /* If the key handling is inhibited, don't do anything */
83 0 : if (inhibit_key > 0) {
84 0 : if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) {
85 0 : log_debug("Refusing %s operation, %s is inhibited.",
86 : handle_action_to_string(handle),
87 : inhibit_what_to_string(inhibit_key));
88 0 : return 0;
89 : }
90 : }
91 :
92 : /* Locking is handled differently from the rest. */
93 0 : if (handle == HANDLE_LOCK) {
94 0 : if (!is_edge)
95 0 : return 0;
96 :
97 0 : log_info("Locking sessions...");
98 0 : session_send_lock_all(m, true);
99 0 : return 1;
100 : }
101 :
102 0 : if (handle == HANDLE_SUSPEND)
103 0 : supported = can_sleep("suspend") > 0;
104 0 : else if (handle == HANDLE_HIBERNATE)
105 0 : supported = can_sleep("hibernate") > 0;
106 0 : else if (handle == HANDLE_HYBRID_SLEEP)
107 0 : supported = can_sleep("hybrid-sleep") > 0;
108 0 : else if (handle == HANDLE_SUSPEND_THEN_HIBERNATE)
109 0 : supported = can_sleep("suspend-then-hibernate") > 0;
110 0 : else if (handle == HANDLE_KEXEC)
111 0 : supported = access(KEXEC, X_OK) >= 0;
112 : else
113 0 : supported = true;
114 :
115 0 : if (!supported && IN_SET(handle, HANDLE_HIBERNATE, HANDLE_HYBRID_SLEEP, HANDLE_SUSPEND_THEN_HIBERNATE)) {
116 0 : supported = can_sleep("suspend") > 0;
117 0 : if (supported) {
118 0 : log_notice("Requested %s operation is not supported, using regular suspend instead.",
119 : handle_action_to_string(handle));
120 0 : handle = HANDLE_SUSPEND;
121 : }
122 : }
123 :
124 0 : if (!supported)
125 0 : return log_warning_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
126 : "Requested %s operation not supported, ignoring.", handle_action_to_string(handle));
127 :
128 0 : if (m->action_what > 0)
129 0 : return log_debug_errno(SYNTHETIC_ERRNO(EALREADY),
130 : "Action already in progress (%s), ignoring requested %s operation.",
131 : inhibit_what_to_string(m->action_what),
132 : handle_action_to_string(handle));
133 :
134 0 : assert_se(target = manager_target_for_action(handle));
135 :
136 0 : inhibit_operation = IN_SET(handle, HANDLE_SUSPEND, HANDLE_HIBERNATE,
137 : HANDLE_HYBRID_SLEEP,
138 0 : HANDLE_SUSPEND_THEN_HIBERNATE) ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN;
139 :
140 : /* If the actual operation is inhibited, warn and fail */
141 0 : if (!ignore_inhibited &&
142 0 : manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) {
143 0 : _cleanup_free_ char *comm = NULL, *u = NULL;
144 :
145 0 : (void) get_process_comm(offending->pid, &comm);
146 0 : u = uid_to_name(offending->uid);
147 :
148 : /* If this is just a recheck of the lid switch then don't warn about anything */
149 0 : log_full(is_edge ? LOG_ERR : LOG_DEBUG,
150 : "Refusing %s operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
151 : handle_action_to_string(handle),
152 : inhibit_what_to_string(inhibit_operation),
153 : offending->uid, strna(u),
154 : offending->pid, strna(comm));
155 :
156 0 : return is_edge ? -EPERM : 0;
157 : }
158 :
159 0 : log_info("%s", message_table[handle]);
160 :
161 0 : r = bus_manager_shutdown_or_sleep_now_or_later(m, target, inhibit_operation, &error);
162 0 : if (r < 0)
163 0 : return log_error_errno(r, "Failed to execute %s operation: %s",
164 : handle_action_to_string(handle),
165 : bus_error_message(&error, r));
166 :
167 0 : return 1;
168 : }
169 :
170 : static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
171 : [HANDLE_IGNORE] = "ignore",
172 : [HANDLE_POWEROFF] = "poweroff",
173 : [HANDLE_REBOOT] = "reboot",
174 : [HANDLE_HALT] = "halt",
175 : [HANDLE_KEXEC] = "kexec",
176 : [HANDLE_SUSPEND] = "suspend",
177 : [HANDLE_HIBERNATE] = "hibernate",
178 : [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
179 : [HANDLE_SUSPEND_THEN_HIBERNATE] = "suspend-then-hibernate",
180 : [HANDLE_LOCK] = "lock",
181 : };
182 :
183 24 : DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction);
184 0 : DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting");
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