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663996b3 MS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2012 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <unistd.h> | |
23 | ||
663996b3 MS |
24 | #include "conf-parser.h" |
25 | #include "special.h" | |
663996b3 | 26 | #include "sleep-config.h" |
60f067b4 JS |
27 | #include "bus-util.h" |
28 | #include "bus-error.h" | |
29 | #include "logind-action.h" | |
e3bff60a MP |
30 | #include "formats-util.h" |
31 | #include "process-util.h" | |
32 | #include "terminal-util.h" | |
663996b3 MS |
33 | |
34 | int manager_handle_action( | |
35 | Manager *m, | |
36 | InhibitWhat inhibit_key, | |
37 | HandleAction handle, | |
38 | bool ignore_inhibited, | |
39 | bool is_edge) { | |
40 | ||
41 | static const char * const message_table[_HANDLE_ACTION_MAX] = { | |
42 | [HANDLE_POWEROFF] = "Powering Off...", | |
43 | [HANDLE_REBOOT] = "Rebooting...", | |
44 | [HANDLE_HALT] = "Halting...", | |
45 | [HANDLE_KEXEC] = "Rebooting via kexec...", | |
46 | [HANDLE_SUSPEND] = "Suspending...", | |
47 | [HANDLE_HIBERNATE] = "Hibernating...", | |
48 | [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..." | |
49 | }; | |
50 | ||
51 | static const char * const target_table[_HANDLE_ACTION_MAX] = { | |
52 | [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET, | |
53 | [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET, | |
54 | [HANDLE_HALT] = SPECIAL_HALT_TARGET, | |
55 | [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET, | |
56 | [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET, | |
57 | [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET, | |
58 | [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET | |
59 | }; | |
60 | ||
60f067b4 | 61 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
663996b3 | 62 | InhibitWhat inhibit_operation; |
60f067b4 | 63 | Inhibitor *offending = NULL; |
663996b3 | 64 | bool supported; |
60f067b4 | 65 | int r; |
663996b3 MS |
66 | |
67 | assert(m); | |
68 | ||
663996b3 MS |
69 | /* If the key handling is turned off, don't do anything */ |
70 | if (handle == HANDLE_IGNORE) { | |
71 | log_debug("Refusing operation, as it is turned off."); | |
72 | return 0; | |
73 | } | |
74 | ||
60f067b4 | 75 | if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) { |
60f067b4 JS |
76 | /* If the last system suspend or startup is too close, |
77 | * let's not suspend for now, to give USB docking | |
78 | * stations some time to settle so that we can | |
79 | * properly watch its displays. */ | |
80 | if (m->lid_switch_ignore_event_source) { | |
81 | log_debug("Ignoring lid switch request, system startup or resume too close."); | |
82 | return 0; | |
83 | } | |
84 | } | |
85 | ||
86 | /* If the key handling is inhibited, don't do anything */ | |
87 | if (inhibit_key > 0) { | |
88 | if (manager_is_inhibited(m, inhibit_key, INHIBIT_BLOCK, NULL, true, false, 0, NULL)) { | |
89 | log_debug("Refusing operation, %s is inhibited.", inhibit_what_to_string(inhibit_key)); | |
90 | return 0; | |
91 | } | |
92 | } | |
93 | ||
94 | /* Locking is handled differently from the rest. */ | |
95 | if (handle == HANDLE_LOCK) { | |
96 | ||
97 | if (!is_edge) | |
98 | return 0; | |
99 | ||
100 | log_info("Locking sessions..."); | |
101 | session_send_lock_all(m, true); | |
102 | return 1; | |
103 | } | |
104 | ||
663996b3 MS |
105 | if (handle == HANDLE_SUSPEND) |
106 | supported = can_sleep("suspend") > 0; | |
107 | else if (handle == HANDLE_HIBERNATE) | |
108 | supported = can_sleep("hibernate") > 0; | |
109 | else if (handle == HANDLE_HYBRID_SLEEP) | |
110 | supported = can_sleep("hybrid-sleep") > 0; | |
111 | else if (handle == HANDLE_KEXEC) | |
14228c0d | 112 | supported = access(KEXEC, X_OK) >= 0; |
663996b3 MS |
113 | else |
114 | supported = true; | |
115 | ||
116 | if (!supported) { | |
117 | log_warning("Requested operation not supported, ignoring."); | |
e3bff60a | 118 | return -EOPNOTSUPP; |
663996b3 MS |
119 | } |
120 | ||
60f067b4 JS |
121 | if (m->action_what) { |
122 | log_debug("Action already in progress, ignoring."); | |
123 | return -EALREADY; | |
663996b3 MS |
124 | } |
125 | ||
126 | inhibit_operation = handle == HANDLE_SUSPEND || handle == HANDLE_HIBERNATE || handle == HANDLE_HYBRID_SLEEP ? INHIBIT_SLEEP : INHIBIT_SHUTDOWN; | |
127 | ||
128 | /* If the actual operation is inhibited, warn and fail */ | |
129 | if (!ignore_inhibited && | |
60f067b4 JS |
130 | manager_is_inhibited(m, inhibit_operation, INHIBIT_BLOCK, NULL, false, false, 0, &offending)) { |
131 | _cleanup_free_ char *comm = NULL, *u = NULL; | |
132 | ||
133 | get_process_comm(offending->pid, &comm); | |
134 | u = uid_to_name(offending->uid); | |
663996b3 MS |
135 | |
136 | /* If this is just a recheck of the lid switch then don't warn about anything */ | |
137 | if (!is_edge) { | |
60f067b4 JS |
138 | log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.", |
139 | inhibit_what_to_string(inhibit_operation), | |
140 | offending->uid, strna(u), | |
141 | offending->pid, strna(comm)); | |
663996b3 MS |
142 | return 0; |
143 | } | |
144 | ||
60f067b4 JS |
145 | log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.", |
146 | inhibit_what_to_string(inhibit_operation), | |
147 | offending->uid, strna(u), | |
148 | offending->pid, strna(comm)); | |
149 | ||
663996b3 MS |
150 | warn_melody(); |
151 | return -EPERM; | |
152 | } | |
153 | ||
154 | log_info("%s", message_table[handle]); | |
155 | ||
663996b3 MS |
156 | r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error); |
157 | if (r < 0) { | |
60f067b4 | 158 | log_error("Failed to execute operation: %s", bus_error_message(&error, r)); |
663996b3 MS |
159 | return r; |
160 | } | |
161 | ||
162 | return 1; | |
163 | } | |
164 | ||
165 | static const char* const handle_action_table[_HANDLE_ACTION_MAX] = { | |
166 | [HANDLE_IGNORE] = "ignore", | |
167 | [HANDLE_POWEROFF] = "poweroff", | |
168 | [HANDLE_REBOOT] = "reboot", | |
169 | [HANDLE_HALT] = "halt", | |
170 | [HANDLE_KEXEC] = "kexec", | |
171 | [HANDLE_SUSPEND] = "suspend", | |
172 | [HANDLE_HIBERNATE] = "hibernate", | |
173 | [HANDLE_HYBRID_SLEEP] = "hybrid-sleep", | |
174 | [HANDLE_LOCK] = "lock" | |
175 | }; | |
176 | ||
177 | DEFINE_STRING_TABLE_LOOKUP(handle_action, HandleAction); | |
178 | DEFINE_CONFIG_PARSE_ENUM(config_parse_handle_action, handle_action, HandleAction, "Failed to parse handle action setting"); |