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-rw-r--r--src/core/emergency-action.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/core/emergency-action.c b/src/core/emergency-action.c
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+++ b/src/core/emergency-action.c
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+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+ Copyright 2012 Michael Olbrich
+
+ 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 <sys/reboot.h>
+#include <linux/reboot.h>
+
+#include "bus-error.h"
+#include "bus-util.h"
+#include "emergency-action.h"
+#include "special.h"
+#include "string-table.h"
+#include "terminal-util.h"
+
+static void log_and_status(Manager *m, const char *message, const char *reason) {
+ log_warning("%s: %s", message, reason);
+ manager_status_printf(m, STATUS_TYPE_EMERGENCY,
+ ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
+ "%s: %s", message, reason);
+}
+
+int emergency_action(
+ Manager *m,
+ EmergencyAction action,
+ const char *reboot_arg,
+ const char *reason) {
+
+ assert(m);
+ assert(action >= 0);
+ assert(action < _EMERGENCY_ACTION_MAX);
+
+ if (action == EMERGENCY_ACTION_NONE)
+ return -ECANCELED;
+
+ if (!MANAGER_IS_SYSTEM(m)) {
+ /* Downgrade all options to simply exiting if we run
+ * in user mode */
+
+ log_warning("Exiting: %s", reason);
+ m->exit_code = MANAGER_EXIT;
+ return -ECANCELED;
+ }
+
+ switch (action) {
+
+ case EMERGENCY_ACTION_REBOOT:
+ log_and_status(m, "Rebooting", reason);
+
+ (void) update_reboot_parameter_and_warn(reboot_arg);
+ (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL);
+
+ break;
+
+ case EMERGENCY_ACTION_REBOOT_FORCE:
+ log_and_status(m, "Forcibly rebooting", reason);
+
+ (void) update_reboot_parameter_and_warn(reboot_arg);
+ m->exit_code = MANAGER_REBOOT;
+
+ break;
+
+ case EMERGENCY_ACTION_REBOOT_IMMEDIATE:
+ log_and_status(m, "Rebooting immediately", reason);
+
+ sync();
+
+ if (!isempty(reboot_arg)) {
+ log_info("Rebooting with argument '%s'.", reboot_arg);
+ syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, reboot_arg);
+ log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m");
+ }
+
+ log_info("Rebooting.");
+ reboot(RB_AUTOBOOT);
+ break;
+
+ case EMERGENCY_ACTION_POWEROFF:
+ log_and_status(m, "Powering off", reason);
+ (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL);
+ break;
+
+ case EMERGENCY_ACTION_POWEROFF_FORCE:
+ log_and_status(m, "Forcibly powering off", reason);
+ m->exit_code = MANAGER_POWEROFF;
+ break;
+
+ case EMERGENCY_ACTION_POWEROFF_IMMEDIATE:
+ log_and_status(m, "Powering off immediately", reason);
+
+ sync();
+
+ log_info("Powering off.");
+ reboot(RB_POWER_OFF);
+ break;
+
+ default:
+ assert_not_reached("Unknown emergency action");
+ }
+
+ return -ECANCELED;
+}
+
+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"
+};
+DEFINE_STRING_TABLE_LOOKUP(emergency_action, EmergencyAction);