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-rw-r--r--src/libcore/dbus-unit.c1276
1 files changed, 1276 insertions, 0 deletions
diff --git a/src/libcore/dbus-unit.c b/src/libcore/dbus-unit.c
new file mode 100644
index 0000000000..9a09f59fc2
--- /dev/null
+++ b/src/libcore/dbus-unit.c
@@ -0,0 +1,1276 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2010 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 <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "cgroup-util.h"
+#include "dbus-unit.h"
+#include "dbus.h"
+#include "locale-util.h"
+#include "log.h"
+#include "selinux-access.h"
+#include "special.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_failure_action, failure_action, FailureAction);
+
+static int property_get_names(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+ Iterator i;
+ const char *t;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ r = sd_bus_message_open_container(reply, 'a', "s");
+ if (r < 0)
+ return r;
+
+ SET_FOREACH(t, u->names, i) {
+ r = sd_bus_message_append(reply, "s", t);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int property_get_following(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata, *f;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ f = unit_following(u);
+ return sd_bus_message_append(reply, "s", f ? f->id : "");
+}
+
+static int property_get_dependencies(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Set *s = *(Set**) userdata;
+ Iterator j;
+ Unit *u;
+ int r;
+
+ assert(bus);
+ assert(reply);
+
+ r = sd_bus_message_open_container(reply, 'a', "s");
+ if (r < 0)
+ return r;
+
+ SET_FOREACH(u, s, j) {
+ r = sd_bus_message_append(reply, "s", u->id);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int property_get_obsolete_dependencies(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ assert(bus);
+ assert(reply);
+
+ /* For dependency types we don't support anymore always return an empty array */
+ return sd_bus_message_append(reply, "as", 0);
+}
+
+static int property_get_description(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "s", unit_description(u));
+}
+
+static int property_get_active_state(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "s", unit_active_state_to_string(unit_active_state(u)));
+}
+
+static int property_get_sub_state(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "s", unit_sub_state_to_string(u));
+}
+
+static int property_get_unit_file_preset(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ r = unit_get_unit_file_preset(u);
+
+ return sd_bus_message_append(reply, "s",
+ r < 0 ? "":
+ r > 0 ? "enabled" : "disabled");
+}
+
+static int property_get_unit_file_state(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "s", unit_file_state_to_string(unit_get_unit_file_state(u)));
+}
+
+static int property_get_can_start(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_start);
+}
+
+static int property_get_can_stop(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ /* On the lower levels we assume that every unit we can start
+ * we can also stop */
+
+ return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_stop);
+}
+
+static int property_get_can_reload(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "b", unit_can_reload(u));
+}
+
+static int property_get_can_isolate(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "b", unit_can_isolate(u) && !u->refuse_manual_start);
+}
+
+static int property_get_job(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ _cleanup_free_ char *p = NULL;
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ if (!u->job)
+ return sd_bus_message_append(reply, "(uo)", 0, "/");
+
+ p = job_dbus_path(u->job);
+ if (!p)
+ return -ENOMEM;
+
+ return sd_bus_message_append(reply, "(uo)", u->job->id, p);
+}
+
+static int property_get_need_daemon_reload(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "b", unit_need_daemon_reload(u));
+}
+
+static int property_get_conditions(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ const char *(*to_string)(ConditionType type) = NULL;
+ Condition **list = userdata, *c;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(list);
+
+ to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
+
+ r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(conditions, c, *list) {
+ int tristate;
+
+ tristate =
+ c->result == CONDITION_UNTESTED ? 0 :
+ c->result == CONDITION_SUCCEEDED ? 1 : -1;
+
+ r = sd_bus_message_append(reply, "(sbbsi)",
+ to_string(c->type),
+ c->trigger, c->negate,
+ c->parameter, tristate);
+ if (r < 0)
+ return r;
+
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int property_get_load_error(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ if (u->load_error != 0)
+ sd_bus_error_set_errno(&e, u->load_error);
+
+ return sd_bus_message_append(reply, "(ss)", e.name, e.message);
+}
+
+static int bus_verify_manage_units_async_full(
+ Unit *u,
+ const char *verb,
+ int capability,
+ const char *polkit_message,
+ sd_bus_message *call,
+ sd_bus_error *error) {
+
+ const char *details[9] = {
+ "unit", u->id,
+ "verb", verb,
+ };
+
+ if (polkit_message) {
+ details[4] = "polkit.message";
+ details[5] = polkit_message;
+ details[6] = "polkit.gettext_domain";
+ details[7] = GETTEXT_PACKAGE;
+ }
+
+ return bus_verify_polkit_async(call, capability, "org.freedesktop.systemd1.manage-units", details, false, UID_INVALID, &u->manager->polkit_registry, error);
+}
+
+int bus_unit_method_start_generic(
+ sd_bus_message *message,
+ Unit *u,
+ JobType job_type,
+ bool reload_if_possible,
+ sd_bus_error *error) {
+
+ const char *smode;
+ JobMode mode;
+ _cleanup_free_ char *verb = NULL;
+ static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
+ [JOB_START] = N_("Authentication is required to start '$(unit)'."),
+ [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
+ [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
+ [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
+ [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
+ };
+ int r;
+
+ assert(message);
+ assert(u);
+ assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
+
+ r = mac_selinux_unit_access_check(
+ u, message,
+ job_type_to_access_method(job_type),
+ error);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(message, "s", &smode);
+ if (r < 0)
+ return r;
+
+ mode = job_mode_from_string(smode);
+ if (mode < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
+
+ if (reload_if_possible)
+ verb = strjoin("reload-or-", job_type_to_string(job_type), NULL);
+ else
+ verb = strdup(job_type_to_string(job_type));
+ if (!verb)
+ return -ENOMEM;
+
+ r = bus_verify_manage_units_async_full(
+ u,
+ verb,
+ CAP_SYS_ADMIN,
+ job_type < _JOB_TYPE_MAX ? polkit_message_for_job[job_type] : NULL,
+ message,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
+
+ return bus_unit_queue_job(message, u, job_type, mode, reload_if_possible, error);
+}
+
+static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
+}
+
+static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
+}
+
+static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
+}
+
+static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
+}
+
+static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
+}
+
+static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
+}
+
+static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
+}
+
+int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Unit *u = userdata;
+ const char *swho;
+ int32_t signo;
+ KillWho who;
+ int r;
+
+ assert(message);
+ assert(u);
+
+ r = mac_selinux_unit_access_check(u, message, "stop", error);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(message, "si", &swho, &signo);
+ if (r < 0)
+ return r;
+
+ if (isempty(swho))
+ who = KILL_ALL;
+ else {
+ who = kill_who_from_string(swho);
+ if (who < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
+ }
+
+ if (signo <= 0 || signo >= _NSIG)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
+
+ r = bus_verify_manage_units_async_full(
+ u,
+ "kill",
+ CAP_KILL,
+ N_("Authentication is required to kill '$(unit)'."),
+ message,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
+
+ r = unit_kill(u, who, signo, error);
+ if (r < 0)
+ return r;
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Unit *u = userdata;
+ int r;
+
+ assert(message);
+ assert(u);
+
+ r = mac_selinux_unit_access_check(u, message, "reload", error);
+ if (r < 0)
+ return r;
+
+ r = bus_verify_manage_units_async_full(
+ u,
+ "reset-failed",
+ CAP_SYS_ADMIN,
+ N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
+ message,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
+
+ unit_reset_failed(u);
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Unit *u = userdata;
+ int runtime, r;
+
+ assert(message);
+ assert(u);
+
+ r = mac_selinux_unit_access_check(u, message, "start", error);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(message, "b", &runtime);
+ if (r < 0)
+ return r;
+
+ r = bus_verify_manage_units_async_full(
+ u,
+ "set-property",
+ CAP_SYS_ADMIN,
+ N_("Authentication is required to set properties on '$(unit)'."),
+ message,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
+
+ r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
+ if (r < 0)
+ return r;
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+const sd_bus_vtable bus_unit_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+
+ SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Names", "as", property_get_names, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
+ SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN),
+ SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN),
+ SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN),
+ SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_obsolete_dependencies, 0, SD_BUS_VTABLE_HIDDEN),
+ SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
+ SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0),
+ BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit, state_change_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Job", "(uo)", property_get_job, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_failure_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), 0),
+ SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), 0),
+ SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("StartLimitAction", "s", property_get_failure_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
+
+ SD_BUS_METHOD("Start", "s", "o", method_start, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("Stop", "s", "o", method_stop, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("Reload", "s", "o", method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("Restart", "s", "o", method_restart, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, SD_BUS_VTABLE_UNPRIVILEGED),
+
+ SD_BUS_VTABLE_END
+};
+
+static int property_get_slice(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ return sd_bus_message_append(reply, "s", unit_slice_name(u));
+}
+
+static int property_get_current_memory(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ uint64_t sz = (uint64_t) -1;
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ r = unit_get_memory_current(u, &sz);
+ if (r < 0 && r != -ENODATA)
+ log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m");
+
+ return sd_bus_message_append(reply, "t", sz);
+}
+
+static int property_get_current_tasks(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ uint64_t cn = (uint64_t) -1;
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ r = unit_get_tasks_current(u, &cn);
+ if (r < 0 && r != -ENODATA)
+ log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m");
+
+ return sd_bus_message_append(reply, "t", cn);
+}
+
+static int property_get_cpu_usage(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ nsec_t ns = (nsec_t) -1;
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ r = unit_get_cpu_usage(u, &ns);
+ if (r < 0 && r != -ENODATA)
+ log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m");
+
+ return sd_bus_message_append(reply, "t", ns);
+}
+
+static int property_get_cgroup(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Unit *u = userdata;
+ const char *t;
+
+ assert(bus);
+ assert(reply);
+ assert(u);
+
+ /* Three cases: a) u->cgroup_path is NULL, in which case the
+ * unit has no control group, which we report as the empty
+ * string. b) u->cgroup_path is the empty string, which
+ * indicates the root cgroup, which we report as "/". c) all
+ * other cases we report as-is. */
+
+ if (u->cgroup_path)
+ t = isempty(u->cgroup_path) ? "/" : u->cgroup_path;
+ else
+ t = "";
+
+ return sd_bus_message_append(reply, "s", t);
+}
+
+const sd_bus_vtable bus_unit_cgroup_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
+ SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0),
+ SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
+ SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0),
+ SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0),
+ SD_BUS_VTABLE_END
+};
+
+static int send_new_signal(sd_bus *bus, void *userdata) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_free_ char *p = NULL;
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(u);
+
+ p = unit_dbus_path(u);
+ if (!p)
+ return -ENOMEM;
+
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "UnitNew");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "so", u->id, p);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+static int send_changed_signal(sd_bus *bus, void *userdata) {
+ _cleanup_free_ char *p = NULL;
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(u);
+
+ p = unit_dbus_path(u);
+ if (!p)
+ return -ENOMEM;
+
+ /* Send a properties changed signal. First for the specific
+ * type, then for the generic unit. The clients may rely on
+ * this order to get atomic behavior if needed. */
+
+ r = sd_bus_emit_properties_changed_strv(
+ bus, p,
+ unit_dbus_interface_from_type(u->type),
+ NULL);
+ if (r < 0)
+ return r;
+
+ return sd_bus_emit_properties_changed_strv(
+ bus, p,
+ "org.freedesktop.systemd1.Unit",
+ NULL);
+}
+
+void bus_unit_send_change_signal(Unit *u) {
+ int r;
+ assert(u);
+
+ if (u->in_dbus_queue) {
+ LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
+ u->in_dbus_queue = false;
+ }
+
+ if (!u->id)
+ return;
+
+ r = bus_foreach_bus(u->manager, NULL, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
+ if (r < 0)
+ log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
+
+ u->sent_dbus_new_signal = true;
+}
+
+static int send_removed_signal(sd_bus *bus, void *userdata) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_free_ char *p = NULL;
+ Unit *u = userdata;
+ int r;
+
+ assert(bus);
+ assert(u);
+
+ p = unit_dbus_path(u);
+ if (!p)
+ return -ENOMEM;
+
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "UnitRemoved");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "so", u->id, p);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+void bus_unit_send_removed_signal(Unit *u) {
+ int r;
+ assert(u);
+
+ if (!u->sent_dbus_new_signal)
+ bus_unit_send_change_signal(u);
+
+ if (!u->id)
+ return;
+
+ r = bus_foreach_bus(u->manager, NULL, send_removed_signal, u);
+ if (r < 0)
+ log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
+}
+
+int bus_unit_queue_job(
+ sd_bus_message *message,
+ Unit *u,
+ JobType type,
+ JobMode mode,
+ bool reload_if_possible,
+ sd_bus_error *error) {
+
+ _cleanup_free_ char *path = NULL;
+ Job *j;
+ int r;
+
+ assert(message);
+ assert(u);
+ assert(type >= 0 && type < _JOB_TYPE_MAX);
+ assert(mode >= 0 && mode < _JOB_MODE_MAX);
+
+ r = mac_selinux_unit_access_check(
+ u, message,
+ job_type_to_access_method(type),
+ error);
+ if (r < 0)
+ return r;
+
+ if (reload_if_possible && unit_can_reload(u)) {
+ if (type == JOB_RESTART)
+ type = JOB_RELOAD_OR_START;
+ else if (type == JOB_TRY_RESTART)
+ type = JOB_TRY_RELOAD;
+ }
+
+
+ if (type == JOB_STOP &&
+ (u->load_state == UNIT_NOT_FOUND || u->load_state == UNIT_ERROR) &&
+ unit_active_state(u) == UNIT_INACTIVE)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
+
+ if ((type == JOB_START && u->refuse_manual_start) ||
+ (type == JOB_STOP && u->refuse_manual_stop) ||
+ ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)) ||
+ (type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start))
+ return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only.", u->id);
+
+ r = manager_add_job(u->manager, type, u, mode, error, &j);
+ if (r < 0)
+ return r;
+
+ if (sd_bus_message_get_bus(message) == u->manager->api_bus) {
+ if (!j->clients) {
+ r = sd_bus_track_new(sd_bus_message_get_bus(message), &j->clients, NULL, NULL);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_track_add_sender(j->clients, message);
+ if (r < 0)
+ return r;
+ }
+
+ path = job_dbus_path(j);
+ if (!path)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "o", path);
+}
+
+static int bus_unit_set_transient_property(
+ Unit *u,
+ const char *name,
+ sd_bus_message *message,
+ UnitSetPropertiesMode mode,
+ sd_bus_error *error) {
+
+ int r;
+
+ assert(u);
+ assert(name);
+ assert(message);
+
+ if (streq(name, "Description")) {
+ const char *d;
+
+ r = sd_bus_message_read(message, "s", &d);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ r = unit_set_description(u, d);
+ if (r < 0)
+ return r;
+
+ unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s\n", d);
+ }
+
+ return 1;
+
+ } else if (streq(name, "DefaultDependencies")) {
+ int b;
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ u->default_dependencies = b;
+ unit_write_drop_in_format(u, mode, name, "[Unit]\nDefaultDependencies=%s\n", yes_no(b));
+ }
+
+ return 1;
+
+ } else if (streq(name, "Slice")) {
+ Unit *slice;
+ const char *s;
+
+ if (!UNIT_HAS_CGROUP_CONTEXT(u))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
+ if (u->type == UNIT_SLICE)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
+ if (unit_has_name(u, SPECIAL_INIT_SCOPE))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope");
+
+ r = sd_bus_message_read(message, "s", &s);
+ if (r < 0)
+ return r;
+
+ if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
+
+ r = manager_load_unit(u->manager, s, NULL, error, &slice);
+ if (r < 0)
+ return r;
+
+ if (slice->type != UNIT_SLICE)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
+
+ if (mode != UNIT_CHECK) {
+ r = unit_set_slice(u, slice);
+ if (r < 0)
+ return r;
+
+ unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
+ }
+
+ return 1;
+
+ } else if (STR_IN_SET(name,
+ "Requires", "RequiresOverridable",
+ "Requisite", "RequisiteOverridable",
+ "Wants",
+ "BindsTo",
+ "Conflicts",
+ "Before", "After",
+ "OnFailure",
+ "PropagatesReloadTo", "ReloadPropagatedFrom",
+ "PartOf")) {
+
+ UnitDependency d;
+ const char *other;
+
+ if (streq(name, "RequiresOverridable"))
+ d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */
+ else if (streq(name, "RequisiteOverridable"))
+ d = UNIT_REQUISITE; /* same here */
+ else {
+ d = unit_dependency_from_string(name);
+ if (d < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit dependency: %s", name);
+ }
+
+ r = sd_bus_message_enter_container(message, 'a', "s");
+ if (r < 0)
+ return r;
+
+ while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
+ if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
+
+ if (mode != UNIT_CHECK) {
+ _cleanup_free_ char *label = NULL;
+
+ r = unit_add_dependency_by_name(u, d, other, NULL, true);
+ if (r < 0)
+ return r;
+
+ label = strjoin(name, "-", other, NULL);
+ if (!label)
+ return -ENOMEM;
+
+ unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s\n", name, other);
+ }
+
+ }
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ return 0;
+}
+
+int bus_unit_set_properties(
+ Unit *u,
+ sd_bus_message *message,
+ UnitSetPropertiesMode mode,
+ bool commit,
+ sd_bus_error *error) {
+
+ bool for_real = false;
+ unsigned n = 0;
+ int r;
+
+ assert(u);
+ assert(message);
+
+ /* We iterate through the array twice. First run we just check
+ * if all passed data is valid, second run actually applies
+ * it. This is to implement transaction-like behaviour without
+ * actually providing full transactions. */
+
+ r = sd_bus_message_enter_container(message, 'a', "(sv)");
+ if (r < 0)
+ return r;
+
+ for (;;) {
+ const char *name;
+
+ r = sd_bus_message_enter_container(message, 'r', "sv");
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ if (for_real || mode == UNIT_CHECK)
+ break;
+
+ /* Reached EOF. Let's try again, and this time for realz... */
+ r = sd_bus_message_rewind(message, false);
+ if (r < 0)
+ return r;
+
+ for_real = true;
+ continue;
+ }
+
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0)
+ return r;
+
+ if (!UNIT_VTABLE(u)->bus_set_property)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
+
+ r = sd_bus_message_enter_container(message, 'v', NULL);
+ if (r < 0)
+ return r;
+
+ r = UNIT_VTABLE(u)->bus_set_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
+ if (r == 0 && u->transient && u->load_state == UNIT_STUB)
+ r = bus_unit_set_transient_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ n += for_real;
+ }
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
+ UNIT_VTABLE(u)->bus_commit_properties(u);
+
+ return n;
+}
+
+int bus_unit_check_load_state(Unit *u, sd_bus_error *error) {
+
+ if (u->load_state == UNIT_LOADED)
+ return 0;
+
+ /* Give a better description of the unit error when
+ * possible. Note that in the case of UNIT_MASKED, load_error
+ * is not set. */
+ if (u->load_state == UNIT_MASKED)
+ return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id);
+
+ if (u->load_state == UNIT_NOT_FOUND)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id);
+
+ return sd_bus_error_set_errnof(error, u->load_error, "Unit %s is not loaded properly: %m.", u->id);
+}