/*-*- 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 General Public License as published by the Free Software Foundation; either version 2 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 General Public License for more details. You should have received a copy of the GNU General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <errno.h> #include "dbus.h" #include "log.h" #include "dbus-manager.h" #include "strv.h" #include "bus-errors.h" #define BUS_MANAGER_INTERFACE \ " <interface name=\"org.freedesktop.systemd1.Manager\">\n" \ " <method name=\"GetUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"GetUnitByPID\">\n" \ " <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \ " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"LoadUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"StartUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"StopUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"ReloadUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"RestartUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"TryRestartUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"ReloadOrRestartUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"ReloadOrTryRestartUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"ResetFailedUnit\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " </method>\n" \ " <method name=\"GetJob\">\n" \ " <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \ " <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"ClearJobs\"/>\n" \ " <method name=\"ResetFailed\"/>\n" \ " <method name=\"ListUnits\">\n" \ " <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"ListJobs\">\n" \ " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"Subscribe\"/>\n" \ " <method name=\"Unsubscribe\"/>\n" \ " <method name=\"Dump\"/>\n" \ " <method name=\"CreateSnapshot\">\n" \ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \ " <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n" \ " <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \ " </method>\n" \ " <method name=\"Reload\"/>\n" \ " <method name=\"Reexecute\"/>\n" \ " <method name=\"Exit\"/>\n" \ " <method name=\"SetEnvironment\">\n" \ " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \ " </method>\n" \ " <method name=\"UnsetEnvironment\">\n" \ " <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \ " </method>\n" \ " <signal name=\"UnitNew\">\n" \ " <arg name=\"id\" type=\"s\"/>\n" \ " <arg name=\"unit\" type=\"o\"/>\n" \ " </signal>\n" \ " <signal name=\"UnitRemoved\">\n" \ " <arg name=\"id\" type=\"s\"/>\n" \ " <arg name=\"unit\" type=\"o\"/>\n" \ " </signal>\n" \ " <signal name=\"JobNew\">\n" \ " <arg name=\"id\" type=\"u\"/>\n" \ " <arg name=\"job\" type=\"o\"/>\n" \ " </signal>\n" \ " <signal name=\"JobRemoved\">\n" \ " <arg name=\"id\" type=\"u\"/>\n" \ " <arg name=\"job\" type=\"o\"/>\n" \ " <arg name=\"success\" type=\"b\"/>\n" \ " </signal>" \ " <property name=\"Version\" type=\"s\" access=\"read\"/>\n" \ " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \ " <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \ " <property name=\"LogLevel\" type=\"s\" access=\"read\"/>\n" \ " <property name=\"LogTarget\" type=\"s\" access=\"read\"/>\n" \ " <property name=\"NNames\" type=\"u\" access=\"read\"/>\n" \ " <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n" \ " <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \ " <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \ " <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \ " <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \ " <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \ " <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \ " <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n" \ " <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \ " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \ " <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \ " <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n" \ " </interface>\n" #define INTROSPECTION_BEGIN \ DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ "<node>\n" \ BUS_MANAGER_INTERFACE \ BUS_PROPERTIES_INTERFACE \ BUS_PEER_INTERFACE \ BUS_INTROSPECTABLE_INTERFACE #define INTROSPECTION_END \ "</node>\n" const char bus_manager_interface[] = BUS_MANAGER_INTERFACE; static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs); static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) { const char *t; assert(m); assert(i); assert(property); t = log_target_to_string(log_get_target()); if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t)) return -ENOMEM; return 0; } static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) { const char *t; assert(m); assert(i); assert(property); t = log_level_to_string(log_get_max_level()); if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t)) return -ENOMEM; return 0; } static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) { uint32_t u; assert(m); assert(i); assert(property); u = hashmap_size(m->units); if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u)) return -ENOMEM; return 0; } static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) { uint32_t u; assert(m); assert(i); assert(property); u = hashmap_size(m->jobs); if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u)) return -ENOMEM; return 0; } static const char *message_get_sender_with_fallback(DBusMessage *m) { const char *s; assert(m); if ((s = dbus_message_get_sender(m))) return s; /* When the message came in from a direct connection the * message will have no sender. We fix that here. */ return ":no-sender"; } static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { Manager *m = data; const BusProperty properties[] = { { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING }, { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as }, { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t", &m->startup_timestamp.realtime }, { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", NULL }, { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", NULL }, { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names, "u", NULL }, { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs, "u", NULL }, { "org.freedesktop.systemd1.Manager", "Environment", bus_property_append_strv, "as", m->environment }, { "org.freedesktop.systemd1.Manager", "ConfirmSpawn", bus_property_append_bool, "b", &m->confirm_spawn }, { "org.freedesktop.systemd1.Manager", "ShowStatus", bus_property_append_bool, "b", &m->show_status }, { "org.freedesktop.systemd1.Manager", "SysVConsole", bus_property_append_bool, "b", &m->sysv_console }, { "org.freedesktop.systemd1.Manager", "UnitPath", bus_property_append_strv, "as", m->lookup_paths.unit_path }, { "org.freedesktop.systemd1.Manager", "SysVInitPath", bus_property_append_strv, "as", m->lookup_paths.sysvinit_path }, { "org.freedesktop.systemd1.Manager", "SysVRcndPath", bus_property_append_strv, "as", m->lookup_paths.sysvrcnd_path }, { "org.freedesktop.systemd1.Manager", "NotifySocket", bus_property_append_string, "s", m->notify_socket }, { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy }, { "org.freedesktop.systemd1.Manager", "MountAuto", bus_property_append_bool, "b", &m->mount_auto }, { "org.freedesktop.systemd1.Manager", "SwapAuto", bus_property_append_bool, "b", &m->swap_auto }, { NULL, NULL, NULL, NULL, NULL } }; int r; DBusError error; DBusMessage *reply = NULL; char * path = NULL; JobType job_type = _JOB_TYPE_INVALID; bool reload_if_possible = false; assert(connection); assert(message); assert(m); dbus_error_init(&error); if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) { const char *name; Unit *u; if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if (!(u = manager_get_unit(m, name))) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name); return bus_send_error_reply(m, connection, message, &error, -ENOENT); } if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(path = unit_dbus_path(u))) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) { Unit *u; uint32_t pid; if (!dbus_message_get_args( message, &error, DBUS_TYPE_UINT32, &pid, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid); return bus_send_error_reply(m, connection, message, &error, -ENOENT); } if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(path = unit_dbus_path(u))) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) { const char *name; Unit *u; if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0) return bus_send_error_reply(m, connection, message, &error, r); if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(path = unit_dbus_path(u))) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit")) job_type = JOB_START; else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit")) job_type = JOB_STOP; else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit")) job_type = JOB_RELOAD; else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit")) job_type = JOB_RESTART; else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit")) job_type = JOB_TRY_RESTART; else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) { reload_if_possible = true; job_type = JOB_RESTART; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) { reload_if_possible = true; job_type = JOB_TRY_RESTART; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) { uint32_t id; Job *j; if (!dbus_message_get_args( message, &error, DBUS_TYPE_UINT32, &id, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if (!(j = manager_get_job(m, id))) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id); return bus_send_error_reply(m, connection, message, &error, -ENOENT); } if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(path = job_dbus_path(j))) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) { manager_clear_jobs(m); if (!(reply = dbus_message_new_method_return(message))) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) { manager_reset_failed(m); if (!(reply = dbus_message_new_method_return(message))) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) { const char *name; Unit *u; if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if (!(u = manager_get_unit(m, name))) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name); return bus_send_error_reply(m, connection, message, &error, -ENOENT); } unit_reset_failed(u); if (!(reply = dbus_message_new_method_return(message))) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) { DBusMessageIter iter, sub; Iterator i; Unit *u; const char *k; if (!(reply = dbus_message_new_method_return(message))) goto oom; dbus_message_iter_init_append(reply, &iter); if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub)) goto oom; HASHMAP_FOREACH_KEY(u, k, m->units, i) { char *u_path, *j_path; const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following; DBusMessageIter sub2; uint32_t job_id; Unit *f; if (k != u->meta.id) continue; if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) goto oom; description = unit_description(u); load_state = unit_load_state_to_string(u->meta.load_state); active_state = unit_active_state_to_string(unit_active_state(u)); sub_state = unit_sub_state_to_string(u); f = unit_following(u); following = f ? f->meta.id : ""; if (!(u_path = unit_dbus_path(u))) goto oom; if (u->meta.job) { job_id = (uint32_t) u->meta.job->id; if (!(j_path = job_dbus_path(u->meta.job))) { free(u_path); goto oom; } sjob_type = job_type_to_string(u->meta.job->type); } else { job_id = 0; j_path = u_path; sjob_type = ""; } if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) { free(u_path); if (u->meta.job) free(j_path); goto oom; } free(u_path); if (u->meta.job) free(j_path); if (!dbus_message_iter_close_container(&sub, &sub2)) goto oom; } if (!dbus_message_iter_close_container(&iter, &sub)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) { DBusMessageIter iter, sub; Iterator i; Job *j; if (!(reply = dbus_message_new_method_return(message))) goto oom; dbus_message_iter_init_append(reply, &iter); if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub)) goto oom; HASHMAP_FOREACH(j, m->jobs, i) { char *u_path, *j_path; const char *state, *type; uint32_t id; DBusMessageIter sub2; if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) goto oom; id = (uint32_t) j->id; state = job_state_to_string(j->state); type = job_type_to_string(j->type); if (!(j_path = job_dbus_path(j))) goto oom; if (!(u_path = unit_dbus_path(j->unit))) { free(j_path); goto oom; } if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) { free(j_path); free(u_path); goto oom; } free(j_path); free(u_path); if (!dbus_message_iter_close_container(&sub, &sub2)) goto oom; } if (!dbus_message_iter_close_container(&iter, &sub)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) { char *client; Set *s; if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) { if (!(s = set_new(string_hash_func, string_compare_func))) goto oom; if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) { set_free(s); goto oom; } } if (!(client = strdup(message_get_sender_with_fallback(message)))) goto oom; if ((r = set_put(s, client)) < 0) { free(client); return bus_send_error_reply(m, connection, message, NULL, r); } if (!(reply = dbus_message_new_method_return(message))) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) { char *client; if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) { dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed."); return bus_send_error_reply(m, connection, message, &error, -ENOENT); } free(client); if (!(reply = dbus_message_new_method_return(message))) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) { FILE *f; char *dump = NULL; size_t size; if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(f = open_memstream(&dump, &size))) goto oom; manager_dump_units(m, f, NULL); manager_dump_jobs(m, f, NULL); if (ferror(f)) { fclose(f); free(dump); goto oom; } fclose(f); if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) { free(dump); goto oom; } free(dump); } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) { const char *name; dbus_bool_t cleanup; Snapshot *s; if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_BOOLEAN, &cleanup, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if (name && name[0] == 0) name = NULL; if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0) return bus_send_error_reply(m, connection, message, &error, r); if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(path = unit_dbus_path(UNIT(s)))) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) { char *introspection = NULL; FILE *f; Iterator i; Unit *u; Job *j; const char *k; size_t size; if (!(reply = dbus_message_new_method_return(message))) goto oom; /* We roll our own introspection code here, instead of * relying on bus_default_message_handler() because we * need to generate our introspection string * dynamically. */ if (!(f = open_memstream(&introspection, &size))) goto oom; fputs(INTROSPECTION_BEGIN, f); HASHMAP_FOREACH_KEY(u, k, m->units, i) { char *p; if (k != u->meta.id) continue; if (!(p = bus_path_escape(k))) { fclose(f); free(introspection); goto oom; } fprintf(f, "<node name=\"unit/%s\"/>", p); free(p); } HASHMAP_FOREACH(j, m->jobs, i) fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id); fputs(INTROSPECTION_END, f); if (ferror(f)) { fclose(f); free(introspection); goto oom; } fclose(f); if (!introspection) goto oom; if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) { free(introspection); goto oom; } free(introspection); } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) { assert(!m->queued_message); /* Instead of sending the reply back right away, we * just remember that we need to and then send it * after the reload is finished. That way the caller * knows when the reload finished. */ if (!(m->queued_message = dbus_message_new_method_return(message))) goto oom; m->queued_message_connection = connection; m->exit_code = MANAGER_RELOAD; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) { if (!(reply = dbus_message_new_method_return(message))) goto oom; m->exit_code = MANAGER_REEXECUTE; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) { if (m->running_as == MANAGER_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for session managers."); return bus_send_error_reply(m, connection, message, &error, -ENOTSUP); } if (!(reply = dbus_message_new_method_return(message))) goto oom; m->exit_code = MANAGER_EXIT; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) { char **l = NULL, **e = NULL; if ((r = bus_parse_strv(message, &l)) < 0) { if (r == -ENOMEM) goto oom; return bus_send_error_reply(m, connection, message, NULL, r); } e = strv_env_merge(2, m->environment, l); strv_free(l); if (!e) goto oom; if (!(reply = dbus_message_new_method_return(message))) { strv_free(e); goto oom; } strv_free(m->environment); m->environment = e; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) { char **l = NULL, **e = NULL; if ((r = bus_parse_strv(message, &l)) < 0) { if (r == -ENOMEM) goto oom; return bus_send_error_reply(m, connection, message, NULL, r); } e = strv_env_delete(m->environment, 1, l); strv_free(l); if (!e) goto oom; if (!(reply = dbus_message_new_method_return(message))) goto oom; strv_free(m->environment); m->environment = e; } else return bus_default_message_handler(m, connection, message, NULL, properties); if (job_type != _JOB_TYPE_INVALID) { const char *name, *smode; JobMode mode; Job *j; Unit *u; if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &smode, DBUS_TYPE_INVALID)) return bus_send_error_reply(m, connection, message, &error, -EINVAL); if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) { dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode); return bus_send_error_reply(m, connection, message, &error, -EINVAL); } if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0) return bus_send_error_reply(m, connection, message, &error, r); if (reload_if_possible && unit_can_reload(u)) { if (job_type == JOB_RESTART) job_type = JOB_RELOAD_OR_START; else if (job_type == JOB_TRY_RESTART) job_type = JOB_RELOAD; } if ((job_type == JOB_START && u->meta.refuse_manual_start) || (job_type == JOB_STOP && u->meta.refuse_manual_stop) || ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) && (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) { dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only."); return bus_send_error_reply(m, connection, message, &error, -EPERM); } if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0) return bus_send_error_reply(m, connection, message, &error, r); if (!(j->bus_client = strdup(message_get_sender_with_fallback(message)))) goto oom; j->bus = connection; if (!(reply = dbus_message_new_method_return(message))) goto oom; if (!(path = job_dbus_path(j))) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) goto oom; } free(path); if (reply) { if (!dbus_connection_send(connection, reply, NULL)) goto oom; dbus_message_unref(reply); } return DBUS_HANDLER_RESULT_HANDLED; oom: free(path); if (reply) dbus_message_unref(reply); dbus_error_free(&error); return DBUS_HANDLER_RESULT_NEED_MEMORY; } const DBusObjectPathVTable bus_manager_vtable = { .message_function = bus_manager_message_handler };