Adding upstream version 247.3.upstream/247.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}