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-rw-r--r--src/grp-login/systemd-logind/logind-action.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/src/grp-login/systemd-logind/logind-action.c b/src/grp-login/systemd-logind/logind-action.c
new file mode 100644
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+++ b/src/grp-login/systemd-logind/logind-action.c
@@ -0,0 +1,179 @@
+/***
+ 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-bus/bus-error.h"
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/formats-util.h"
+#include "systemd-basic/process-util.h"
+#include "systemd-basic/special.h"
+#include "systemd-basic/string-table.h"
+#include "systemd-basic/terminal-util.h"
+#include "systemd-basic/user-util.h"
+#include "systemd-shared/bus-util.h"
+#include "systemd-shared/conf-parser.h"
+#include "systemd-shared/sleep-config.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_(sd_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 (!ignore_inhibited && 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 -EOPNOTSUPP;
+ }
+
+ if (m->action_what) {
+ log_debug("Action already in progress, ignoring.");
+ return -EALREADY;
+ }
+
+ inhibit_operation = IN_SET(handle, HANDLE_SUSPEND, HANDLE_HIBERNATE, 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));
+
+ 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");