| /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| |
| /*** |
| 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 "sd-bus.h" |
| #include "log.h" |
| #include "selinux-access.h" |
| #include "cgroup-util.h" |
| #include "strv.h" |
| #include "path-util.h" |
| #include "fileio.h" |
| #include "bus-errors.h" |
| #include "dbus.h" |
| #include "dbus-manager.h" |
| #include "dbus-unit.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 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_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_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) { |
| |
| Unit *u = userdata; |
| Condition *c; |
| int r; |
| |
| assert(bus); |
| assert(reply); |
| assert(u); |
| |
| r = sd_bus_message_open_container(reply, 'a', "(sbbsi)"); |
| if (r < 0) |
| return r; |
| |
| LIST_FOREACH(conditions, c, u->conditions) { |
| r = sd_bus_message_append(reply, "(sbbsi)", |
| condition_type_to_string(c->type), |
| c->trigger, c->negate, |
| c->parameter, c->state); |
| 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_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); |
| } |
| |
| int bus_unit_method_start_generic(sd_bus *bus, sd_bus_message *message, Unit *u, JobType job_type, bool reload_if_possible, sd_bus_error *error) { |
| const char *smode; |
| JobMode mode; |
| int r; |
| |
| assert(bus); |
| assert(message); |
| assert(u); |
| assert(job_type >= 0 && job_type < _JOB_TYPE_MAX); |
| |
| 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); |
| |
| return bus_unit_queue_job(bus, message, u, job_type, mode, reload_if_possible, error); |
| } |
| |
| static int method_start(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_START, false, error); |
| } |
| |
| static int method_stop(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_STOP, false, error); |
| } |
| |
| static int method_reload(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_RELOAD, false, error); |
| } |
| |
| static int method_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, false, error); |
| } |
| |
| static int method_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, false, error); |
| } |
| |
| static int method_reload_or_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, true, error); |
| } |
| |
| static int method_reload_or_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, true, error); |
| } |
| |
| int bus_unit_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| const char *swho; |
| int32_t signo; |
| KillWho who; |
| int r; |
| |
| assert(bus); |
| assert(message); |
| assert(u); |
| |
| 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 = selinux_unit_access_check(u, message, "stop", error); |
| if (r < 0) |
| return r; |
| |
| 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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| int r; |
| |
| assert(bus); |
| assert(message); |
| assert(u); |
| |
| r = selinux_unit_access_check(u, message, "reload", error); |
| if (r < 0) |
| return r; |
| |
| unit_reset_failed(u); |
| |
| return sd_bus_reply_method_return(message, NULL); |
| } |
| |
| int bus_unit_method_set_properties(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
| Unit *u = userdata; |
| int runtime, r; |
| |
| assert(bus); |
| assert(message); |
| assert(u); |
| |
| r = sd_bus_message_read(message, "b", &runtime); |
| if (r < 0) |
| return r; |
| |
| r = selinux_unit_access_check(u, message, "start", error); |
| if (r < 0) |
| return r; |
| |
| 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("RequiresOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), 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("RequisiteOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), 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("RequiredByOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), 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("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), |
| 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("IgnoreOnSnapshot", "b", bus_property_get_bool, offsetof(Unit, ignore_on_snapshot), 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("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, 0, 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_METHOD("Start", "s", "o", method_start, 0), |
| SD_BUS_METHOD("Stop", "s", "o", method_stop, 0), |
| SD_BUS_METHOD("Reload", "s", "o", method_reload, 0), |
| SD_BUS_METHOD("Restart", "s", "o", method_restart, 0), |
| SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, 0), |
| SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, 0), |
| SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, 0), |
| SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, 0), |
| SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, 0), |
| SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, 0), |
| |
| 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)); |
| } |
| |
| 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", NULL, offsetof(Unit, cgroup_path), 0), |
| SD_BUS_VTABLE_END |
| }; |
| |
| static int send_new_signal(sd_bus *bus, void *userdata) { |
| _cleanup_bus_message_unref_ 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 (!u) |
| 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_VTABLE(u)->bus_interface, |
| 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_debug("Failed to send unit change signal for %s: %s", u->id, strerror(-r)); |
| |
| u->sent_dbus_new_signal = true; |
| } |
| |
| static int send_removed_signal(sd_bus *bus, void *userdata) { |
| _cleanup_bus_message_unref_ 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 (!u) |
| 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_debug("Failed to send unit remove signal for %s: %s", u->id, strerror(-r)); |
| } |
| |
| int bus_unit_queue_job( |
| sd_bus *bus, |
| 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(bus); |
| assert(message); |
| assert(u); |
| assert(type >= 0 && type < _JOB_TYPE_MAX); |
| assert(mode >= 0 && mode < _JOB_MODE_MAX); |
| |
| 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_RELOAD; |
| } |
| |
| r = selinux_unit_access_check( |
| u, message, |
| (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" : |
| type == JOB_STOP ? "stop" : "reload", error); |
| if (r < 0) |
| return r; |
| |
| 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))) |
| 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, true, error, &j); |
| if (r < 0) |
| return r; |
| |
| if (bus == u->manager->api_bus) { |
| if (!j->subscribed) { |
| r = sd_bus_track_new(bus, &j->subscribed, NULL, NULL); |
| if (r < 0) |
| return r; |
| } |
| |
| r = sd_bus_track_add_sender(j->subscribed, 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, "Slice") && unit_get_cgroup_context(u)) { |
| const char *s; |
| |
| r = sd_bus_message_read(message, "s", &s); |
| if (r < 0) |
| return r; |
| |
| if (!unit_name_is_valid(s, TEMPLATE_INVALID) || !endswith(s, ".slice")) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s); |
| |
| if (isempty(s)) { |
| if (mode != UNIT_CHECK) { |
| unit_ref_unset(&u->slice); |
| unit_remove_drop_in(u, mode, name); |
| } |
| } else { |
| Unit *slice; |
| |
| r = manager_load_unit(u->manager, s, NULL, error, &slice); |
| if (r < 0) |
| return r; |
| |
| if (slice->type != UNIT_SLICE) |
| return -EINVAL; |
| |
| if (mode != UNIT_CHECK) { |
| unit_ref_set(&u->slice, slice); |
| unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s); |
| } |
| } |
| |
| return 1; |
| |
| } else if (streq(name, "Requires") || |
| streq(name, "RequiresOverridable") || |
| streq(name, "Requisite") || |
| streq(name, "RequisiteOverridable") || |
| streq(name, "Wants") || |
| streq(name, "BindsTo") || |
| streq(name, "Conflicts") || |
| streq(name, "Before") || |
| streq(name, "After") || |
| streq(name, "OnFailure") || |
| streq(name, "PropagatesReloadTo") || |
| streq(name, "ReloadPropagatedFrom") || |
| streq(name, "PartOf")) { |
| |
| UnitDependency d; |
| const char *other; |
| |
| d = unit_dependency_from_string(name); |
| if (d < 0) |
| return -EINVAL; |
| |
| 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, TEMPLATE_INVALID)) |
| 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; |
| } |