1 files changed, 96 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-is-active.c b/src/systemctl/systemctl-is-active.c
new file mode 100644
index 0000000..596320a
--- /dev/null
+++ b/src/systemctl/systemctl-is-active.c
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "pretty-print.h"
+#include "syslog-util.h"
+#include "systemctl-is-active.h"
+#include "systemctl-sysv-compat.h"
+#include "systemctl-util.h"
+#include "systemctl.h"
+
+static int check_unit_generic(int code, const UnitActiveState good_states[], size_t nb_states, char **args) {
+        _cleanup_strv_free_ char **names = NULL;
+        UnitActiveState active_state;
+        sd_bus *bus;
+        bool not_found = true, ok = false;
+        int r;
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        r = expand_unit_names(bus, args, NULL, &names, NULL);
+        if (r < 0)
+                return log_error_errno(r, "Failed to expand names: %m");
+
+        STRV_FOREACH(name, names) {
+                _cleanup_free_ char *load_state = NULL;
+
+                r = get_state_one_unit(bus, *name, &active_state);
+                if (r < 0)
+                        return r;
+
+                r = unit_load_state(bus, *name, &load_state);
+                if (r < 0)
+                        return r;
+
+                if (!arg_quiet)
+                        puts(unit_active_state_to_string(active_state));
+
+                FOREACH_ARRAY(good_state, good_states, nb_states)
+                        if (active_state == *good_state) {
+                                ok = true;
+                                break;
+                        }
+
+                if (!streq(load_state, "not-found"))
+                        not_found = false;
+        }
+
+        /* We use LSB code 4 ("program or service status is unknown") when the corresponding unit file doesn't exist. */
+        return ok ? EXIT_SUCCESS : not_found ? EXIT_PROGRAM_OR_SERVICES_STATUS_UNKNOWN : code;
+}
+
+int verb_is_active(int argc, char *argv[], void *userdata) {
+
+        static const UnitActiveState states[] = {
+                UNIT_ACTIVE,
+                UNIT_RELOADING,
+        };
+
+        /* According to LSB: 3, "program is not running" */
+        return check_unit_generic(EXIT_PROGRAM_NOT_RUNNING, states, ELEMENTSOF(states), strv_skip(argv, 1));
+}
+
+int verb_is_failed(int argc, char *argv[], void *userdata) {
+
+        static const UnitActiveState states[] = {
+                UNIT_FAILED,
+        };
+
+        int r;
+
+        if (argc > 1)
+                return check_unit_generic(EXIT_PROGRAM_DEAD_AND_PID_EXISTS, states, ELEMENTSOF(states), strv_skip(argv, 1));
+
+        /* If no unit is provided, we check SystemState property of the manager, i.e. whether there're failed
+         * units. */
+
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_free_ char *state = NULL;
+        sd_bus *bus;
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        r = bus_get_property_string(bus, bus_systemd_mgr, "SystemState", &error, &state);
+        if (r < 0)
+                return log_error_errno(r, "Failed to query system state: %s", bus_error_message(&error, r));
+
+        if (!arg_quiet)
+                puts(state);
+
+        return streq(state, "degraded") ? EXIT_SUCCESS : EXIT_FAILURE;
+}