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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
commit2cb7e0aaedad73b076ea18c6900b0e86c5760d79 (patch)
treeda68ca54bb79f4080079bf0828acda937593a4e1 /src/core/emergency-action.c
parentInitial commit. (diff)
downloadsystemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.tar.xz
systemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.zip
Adding upstream version 247.3.upstream/247.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/core/emergency-action.c')
-rw-r--r--src/core/emergency-action.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/src/core/emergency-action.c b/src/core/emergency-action.c
new file mode 100644
index 0000000..9e8c79e
--- /dev/null
+++ b/src/core/emergency-action.c
@@ -0,0 +1,171 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <sys/reboot.h>
+
+#include "bus-error.h"
+#include "bus-util.h"
+#include "emergency-action.h"
+#include "raw-reboot.h"
+#include "reboot-util.h"
+#include "special.h"
+#include "string-table.h"
+#include "terminal-util.h"
+#include "virt.h"
+
+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",
+ [EMERGENCY_ACTION_EXIT] = "exit",
+ [EMERGENCY_ACTION_EXIT_FORCE] = "exit-force",
+};
+
+static void log_and_status(Manager *m, bool warn, const char *message, const char *reason) {
+ log_full(warn ? LOG_WARNING : LOG_DEBUG, "%s: %s", message, reason);
+ if (warn)
+ manager_status_printf(m, STATUS_TYPE_EMERGENCY,
+ ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
+ "%s: %s", message, reason);
+}
+
+void emergency_action(
+ Manager *m,
+ EmergencyAction action,
+ EmergencyActionFlags options,
+ const char *reboot_arg,
+ int exit_status,
+ const char *reason) {
+
+ Unit *u;
+
+ assert(m);
+ assert(action >= 0);
+ assert(action < _EMERGENCY_ACTION_MAX);
+
+ /* Is the special shutdown target active or queued? If so, we are in shutdown state */
+ if (IN_SET(action, EMERGENCY_ACTION_REBOOT, EMERGENCY_ACTION_POWEROFF, EMERGENCY_ACTION_EXIT)) {
+ u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
+ if (u && unit_active_or_pending(u)) {
+ log_notice("Shutdown is already active. Skipping emergency action request %s.",
+ emergency_action_table[action]);
+ return;
+ }
+ }
+
+ if (action == EMERGENCY_ACTION_NONE)
+ return;
+
+ if (FLAGS_SET(options, EMERGENCY_ACTION_IS_WATCHDOG) && !m->service_watchdogs) {
+ log_warning("Watchdog disabled! Not acting on: %s", reason);
+ return;
+ }
+
+ bool warn = FLAGS_SET(options, EMERGENCY_ACTION_WARN);
+
+ switch (action) {
+
+ case EMERGENCY_ACTION_REBOOT:
+ log_and_status(m, warn, "Rebooting", reason);
+
+ (void) update_reboot_parameter_and_warn(reboot_arg, true);
+ (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
+ break;
+
+ case EMERGENCY_ACTION_REBOOT_FORCE:
+ log_and_status(m, warn, "Forcibly rebooting", reason);
+
+ (void) update_reboot_parameter_and_warn(reboot_arg, true);
+ m->objective = MANAGER_REBOOT;
+
+ break;
+
+ case EMERGENCY_ACTION_REBOOT_IMMEDIATE:
+ log_and_status(m, warn, "Rebooting immediately", reason);
+
+ sync();
+
+ if (!isempty(reboot_arg)) {
+ log_info("Rebooting with argument '%s'.", reboot_arg);
+ (void) raw_reboot(LINUX_REBOOT_CMD_RESTART2, reboot_arg);
+ log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m");
+ }
+
+ log_info("Rebooting.");
+ (void) reboot(RB_AUTOBOOT);
+ break;
+
+ case EMERGENCY_ACTION_EXIT:
+
+ if (exit_status >= 0)
+ m->return_value = exit_status;
+
+ if (MANAGER_IS_USER(m) || detect_container() > 0) {
+ log_and_status(m, warn, "Exiting", reason);
+ (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
+ break;
+ }
+
+ log_notice("Doing \"poweroff\" action instead of an \"exit\" emergency action.");
+ _fallthrough_;
+
+ case EMERGENCY_ACTION_POWEROFF:
+ log_and_status(m, warn, "Powering off", reason);
+ (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL, NULL);
+ break;
+
+ case EMERGENCY_ACTION_EXIT_FORCE:
+
+ if (exit_status >= 0)
+ m->return_value = exit_status;
+
+ if (MANAGER_IS_USER(m) || detect_container() > 0) {
+ log_and_status(m, warn, "Exiting immediately", reason);
+ m->objective = MANAGER_EXIT;
+ break;
+ }
+
+ log_notice("Doing \"poweroff-force\" action instead of an \"exit-force\" emergency action.");
+ _fallthrough_;
+
+ case EMERGENCY_ACTION_POWEROFF_FORCE:
+ log_and_status(m, warn, "Forcibly powering off", reason);
+ m->objective = MANAGER_POWEROFF;
+ break;
+
+ case EMERGENCY_ACTION_POWEROFF_IMMEDIATE:
+ log_and_status(m, warn, "Powering off immediately", reason);
+
+ sync();
+
+ log_info("Powering off.");
+ (void) reboot(RB_POWER_OFF);
+ break;
+
+ default:
+ assert_not_reached("Unknown emergency action");
+ }
+}
+
+DEFINE_STRING_TABLE_LOOKUP(emergency_action, EmergencyAction);
+
+int parse_emergency_action(
+ const char *value,
+ bool system,
+ EmergencyAction *ret) {
+
+ EmergencyAction x;
+
+ x = emergency_action_from_string(value);
+ if (x < 0)
+ return -EINVAL;
+
+ if (!system && x != EMERGENCY_ACTION_NONE && x < _EMERGENCY_ACTION_FIRST_USER_ACTION)
+ return -EOPNOTSUPP;
+
+ *ret = x;
+ return 0;
+}