/*-*- 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 . ***/ #include #include #include "dbus.h" #include "log.h" #include "dbus-manager.h" #include "strv.h" #include "bus-errors.h" #include "build.h" #include "dbus-common.h" #include "install.h" #include "selinux-access.h" #include "watchdog.h" #include "hwclock.h" #include "path-util.h" #include "dbus-unit.h" #define BUS_MANAGER_INTERFACE_BEGIN \ " \n" #define BUS_MANAGER_INTERFACE_METHODS \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" #define BUS_MANAGER_INTERFACE_SIGNALS \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " " \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " " \ " \n" #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" #define BUS_MANAGER_INTERFACE_END \ " \n" #define BUS_MANAGER_INTERFACE \ BUS_MANAGER_INTERFACE_BEGIN \ BUS_MANAGER_INTERFACE_METHODS \ BUS_MANAGER_INTERFACE_SIGNALS \ BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \ BUS_MANAGER_INTERFACE_END #define INTROSPECTION_BEGIN \ DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ "\n" \ BUS_MANAGER_INTERFACE \ BUS_PROPERTIES_INTERFACE \ BUS_PEER_INTERFACE \ BUS_INTROSPECTABLE_INTERFACE #define INTROSPECTION_END \ "\n" #define INTERFACES_LIST \ BUS_GENERIC_INTERFACES_LIST \ "org.freedesktop.systemd1.Manager\0" const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE; static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput); static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) { const char *t; Manager *m = data; char buf[LINE_MAX] = "", *e = buf, *p = NULL; assert(i); assert(property); assert(m); if (m->taint_usr) e = stpcpy(e, "split-usr:"); if (readlink_malloc("/etc/mtab", &p) < 0) e = stpcpy(e, "mtab-not-symlink:"); else free(p); if (access("/proc/cgroups", F_OK) < 0) e = stpcpy(e, "cgroups-missing:"); if (hwclock_is_localtime() > 0) e = stpcpy(e, "local-hwclock:"); /* remove the last ':' */ if (e != buf) e[-1] = 0; t = buf; if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t)) return -ENOMEM; return 0; } static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) { const char *t; 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_set_log_target(DBusMessageIter *i, const char *property, void *data) { const char *t; assert(i); assert(property); dbus_message_iter_get_basic(i, &t); return log_set_target_from_string(t); } static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) { const char *t; 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_set_log_level(DBusMessageIter *i, const char *property, void *data) { const char *t; assert(i); assert(property); dbus_message_iter_get_basic(i, &t); return log_set_max_level_from_string(t); } static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) { Manager *m = data; uint32_t u; assert(i); assert(property); assert(m); 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(DBusMessageIter *i, const char *property, void *data) { Manager *m = data; uint32_t u; assert(i); assert(property); assert(m); u = hashmap_size(m->jobs); if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u)) return -ENOMEM; return 0; } static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) { double d; Manager *m = data; assert(i); assert(property); assert(m); if (dual_timestamp_is_set(&m->finish_timestamp)) d = 1.0; else d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs); if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d)) return -ENOMEM; return 0; } static DBusMessage *message_from_file_changes( DBusMessage *m, UnitFileChange *changes, unsigned n_changes, int carries_install_info) { DBusMessageIter iter, sub, sub2; DBusMessage *reply; unsigned i; reply = dbus_message_new_method_return(m); if (!reply) return NULL; dbus_message_iter_init_append(reply, &iter); if (carries_install_info >= 0) { dbus_bool_t b; b = !!carries_install_info; if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) goto oom; } if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sss)", &sub)) goto oom; for (i = 0; i < n_changes; i++) { const char *type, *path, *source; type = unit_file_change_type_to_string(changes[i].type); path = strempty(changes[i].path); source = strempty(changes[i].source); if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &path) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &source) || !dbus_message_iter_close_container(&sub, &sub2)) goto oom; } if (!dbus_message_iter_close_container(&iter, &sub)) goto oom; return reply; oom: dbus_message_unref(reply); return NULL; } static int bus_manager_send_unit_files_changed(Manager *m) { DBusMessage *s; int r; s = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged"); if (!s) return -ENOMEM; r = bus_broadcast(m, s); dbus_message_unref(s); return r; } static int bus_manager_set_runtime_watchdog_usec(DBusMessageIter *i, const char *property, void *data) { uint64_t *t = data; assert(i); assert(property); dbus_message_iter_get_basic(i, t); return watchdog_set_timeout(t); } static const char systemd_property_string[] = PACKAGE_STRING "\0" DISTRIBUTION "\0" SYSTEMD_FEATURES; static const BusProperty bus_systemd_properties[] = { { "Version", bus_property_append_string, "s", 0 }, { "Distribution", bus_property_append_string, "s", sizeof(PACKAGE_STRING) }, { "Features", bus_property_append_string, "s", sizeof(PACKAGE_STRING) + sizeof(DISTRIBUTION) }, { NULL, } }; static const BusProperty bus_manager_properties[] = { { "Tainted", bus_manager_append_tainted, "s", 0 }, { "FirmwareTimestamp", bus_property_append_uint64, "t", offsetof(Manager, firmware_timestamp.realtime) }, { "FirmwareTimestampMonotonic", bus_property_append_uint64,"t", offsetof(Manager, firmware_timestamp.monotonic)}, { "LoaderTimestamp", bus_property_append_uint64, "t", offsetof(Manager, loader_timestamp.realtime) }, { "LoaderTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, loader_timestamp.monotonic) }, { "KernelTimestamp", bus_property_append_uint64, "t", offsetof(Manager, kernel_timestamp.realtime) }, { "KernelTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, kernel_timestamp.monotonic) }, { "InitRDTimestamp", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.realtime) }, { "InitRDTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.monotonic) }, { "UserspaceTimestamp", bus_property_append_uint64, "t", offsetof(Manager, userspace_timestamp.realtime)}, { "UserspaceTimestampMonotonic", bus_property_append_uint64,"t",offsetof(Manager, userspace_timestamp.monotonic)}, { "FinishTimestamp", bus_property_append_uint64, "t", offsetof(Manager, finish_timestamp.realtime) }, { "FinishTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, finish_timestamp.monotonic) }, { "LogLevel", bus_manager_append_log_level, "s", 0, false, bus_manager_set_log_level }, { "LogTarget", bus_manager_append_log_target, "s", 0, false, bus_manager_set_log_target }, { "NNames", bus_manager_append_n_names, "u", 0 }, { "NJobs", bus_manager_append_n_jobs, "u", 0 }, { "NInstalledJobs",bus_property_append_uint32, "u", offsetof(Manager, n_installed_jobs) }, { "NFailedJobs", bus_property_append_uint32, "u", offsetof(Manager, n_failed_jobs) }, { "Progress", bus_manager_append_progress, "d", 0 }, { "Environment", bus_property_append_strv, "as", offsetof(Manager, environment), true }, { "ConfirmSpawn", bus_property_append_bool, "b", offsetof(Manager, confirm_spawn) }, { "ShowStatus", bus_property_append_bool, "b", offsetof(Manager, show_status) }, { "UnitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.unit_path), true }, { "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_hierarchy), true }, { "DefaultControllers", bus_property_append_strv, "as", offsetof(Manager, default_controllers), true }, { "DefaultStandardOutput", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_output) }, { "DefaultStandardError", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_error) }, { "RuntimeWatchdogUSec", bus_property_append_usec, "t", offsetof(Manager, runtime_watchdog), false, bus_manager_set_runtime_watchdog_usec }, { "ShutdownWatchdogUSec", bus_property_append_usec, "t", offsetof(Manager, shutdown_watchdog), false, bus_property_set_usec }, { NULL, } }; static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; _cleanup_free_ char * path = NULL; Manager *m = data; int r; DBusError error; JobType job_type = _JOB_TYPE_INVALID; bool reload_if_possible = false; const char *member; assert(connection); assert(message); assert(m); dbus_error_init(&error); member = dbus_message_get_member(message); 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(connection, message, &error, -EINVAL); u = manager_get_unit(m, name); if (!u) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name); return bus_send_error_reply(connection, message, &error, -ENOENT); } SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) goto oom; path = unit_dbus_path(u); if (!path) 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(connection, message, &error, -EINVAL); u = cgroup_unit_by_pid(m, (pid_t) pid); if (!u) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid); return bus_send_error_reply(connection, message, &error, -ENOENT); } SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) goto oom; path = unit_dbus_path(u); if (!reply) 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(connection, message, &error, -EINVAL); r = manager_load_unit(m, name, NULL, &error, &u); if (r < 0) return bus_send_error_reply(connection, message, &error, r); SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) goto oom; path = unit_dbus_path(u); if (!path) 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", "StartUnitReplace")) 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", "KillUnit")) { const char *name, *swho; int32_t signo; Unit *u; KillWho who; if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &swho, DBUS_TYPE_INT32, &signo, DBUS_TYPE_INVALID)) return bus_send_error_reply(connection, message, &error, -EINVAL); if (isempty(swho)) who = KILL_ALL; else { who = kill_who_from_string(swho); if (who < 0) return bus_send_error_reply(connection, message, &error, -EINVAL); } if (signo <= 0 || signo >= _NSIG) return bus_send_error_reply(connection, message, &error, -EINVAL); u = manager_get_unit(m, name); if (!u) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name); return bus_send_error_reply(connection, message, &error, -ENOENT); } SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop"); r = unit_kill(u, who, signo, &error); if (r < 0) return bus_send_error_reply(connection, message, &error, r); if (!(reply = dbus_message_new_method_return(message))) goto oom; } 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(connection, message, &error, -EINVAL); j = manager_get_job(m, id); if (!j) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id); return bus_send_error_reply(connection, message, &error, -ENOENT); } SELINUX_UNIT_ACCESS_CHECK(j->unit, connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) goto oom; path = job_dbus_path(j); if (!path) 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")) { SELINUX_ACCESS_CHECK(connection, message, "reboot"); manager_clear_jobs(m); reply = dbus_message_new_method_return(message); if (!reply) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) { SELINUX_ACCESS_CHECK(connection, message, "reload"); manager_reset_failed(m); reply = dbus_message_new_method_return(message); if (!reply) 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(connection, message, &error, -EINVAL); u = manager_get_unit(m, name); if (!u) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name); return bus_send_error_reply(connection, message, &error, -ENOENT); } SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "reload"); unit_reset_failed(u); reply = dbus_message_new_method_return(message); if (!reply) 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; SELINUX_ACCESS_CHECK(connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) 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->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->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->id : ""; u_path = unit_dbus_path(u); if (!u_path) goto oom; if (u->job) { job_id = (uint32_t) u->job->id; if (!(j_path = job_dbus_path(u->job))) { free(u_path); goto oom; } sjob_type = job_type_to_string(u->job->type); } else { job_id = 0; j_path = u_path; sjob_type = ""; } if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->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->job) free(j_path); goto oom; } free(u_path); if (u->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; SELINUX_ACCESS_CHECK(connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) 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); j_path = job_dbus_path(j); if (!j_path) goto oom; u_path = unit_dbus_path(j->unit); if (!u_path) { 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->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; SELINUX_ACCESS_CHECK(connection, message, "status"); s = BUS_CONNECTION_SUBSCRIBED(m, connection); if (!s) { s = set_new(string_hash_func, string_compare_func); if (!s) goto oom; if (!dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL)) { set_free(s); goto oom; } } client = strdup(bus_message_get_sender_with_fallback(message)); if (!client) goto oom; r = set_put(s, client); if (r < 0) { free(client); return bus_send_error_reply(connection, message, NULL, r); } reply = dbus_message_new_method_return(message); if (!reply) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) { char *client; SELINUX_ACCESS_CHECK(connection, message, "status"); client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) bus_message_get_sender_with_fallback(message)); if (!client) { dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed."); return bus_send_error_reply(connection, message, &error, -ENOENT); } free(client); reply = dbus_message_new_method_return(message); if (!reply) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) { FILE *f; char *dump = NULL; size_t size; SELINUX_ACCESS_CHECK(connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) goto oom; f = open_memstream(&dump, &size); if (!f) 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; SELINUX_ACCESS_CHECK(connection, message, "start"); if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_BOOLEAN, &cleanup, DBUS_TYPE_INVALID)) return bus_send_error_reply(connection, message, &error, -EINVAL); if (isempty(name)) name = NULL; r = snapshot_create(m, name, cleanup, &error, &s); if (r < 0) return bus_send_error_reply(connection, message, &error, r); reply = dbus_message_new_method_return(message); if (!reply) goto oom; path = unit_dbus_path(UNIT(s)); if (!path) 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; SELINUX_ACCESS_CHECK(connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) 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. */ f = open_memstream(&introspection, &size); if (!f) goto oom; fputs(INTROSPECTION_BEGIN, f); HASHMAP_FOREACH_KEY(u, k, m->units, i) { char *p; if (k != u->id) continue; p = bus_path_escape(k); if (!p) { fclose(f); free(introspection); goto oom; } fprintf(f, "", p); free(p); } HASHMAP_FOREACH(j, m->jobs, i) fprintf(f, "", (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")) { SELINUX_ACCESS_CHECK(connection, message, "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. */ m->queued_message = dbus_message_new_method_return(message); if (!m->queued_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")) { SELINUX_ACCESS_CHECK(connection, message, "reload"); /* We don't send a reply back here, the client should * just wait for us disconnecting. */ m->exit_code = MANAGER_REEXECUTE; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) { SELINUX_ACCESS_CHECK(connection, message, "halt"); if (m->running_as == SYSTEMD_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers."); return bus_send_error_reply(connection, message, &error, -ENOTSUP); } reply = dbus_message_new_method_return(message); if (!reply) goto oom; m->exit_code = MANAGER_EXIT; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) { SELINUX_ACCESS_CHECK(connection, message, "reboot"); if (m->running_as != SYSTEMD_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers."); return bus_send_error_reply(connection, message, &error, -ENOTSUP); } reply = dbus_message_new_method_return(message); if (!reply) goto oom; m->exit_code = MANAGER_REBOOT; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) { SELINUX_ACCESS_CHECK(connection, message, "halt"); if (m->running_as != SYSTEMD_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers."); return bus_send_error_reply(connection, message, &error, -ENOTSUP); } reply = dbus_message_new_method_return(message); if (!reply) goto oom; m->exit_code = MANAGER_POWEROFF; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) { SELINUX_ACCESS_CHECK(connection, message, "halt"); if (m->running_as != SYSTEMD_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers."); return bus_send_error_reply(connection, message, &error, -ENOTSUP); } reply = dbus_message_new_method_return(message); if (!reply) goto oom; m->exit_code = MANAGER_HALT; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) { SELINUX_ACCESS_CHECK(connection, message, "reboot"); if (m->running_as != SYSTEMD_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers."); return bus_send_error_reply(connection, message, &error, -ENOTSUP); } reply = dbus_message_new_method_return(message); if (!reply) goto oom; m->exit_code = MANAGER_KEXEC; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SwitchRoot")) { const char *switch_root, *switch_root_init; char *u, *v; int k; SELINUX_ACCESS_CHECK(connection, message, "reboot"); if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &switch_root, DBUS_TYPE_STRING, &switch_root_init, DBUS_TYPE_INVALID)) return bus_send_error_reply(connection, message, &error, -EINVAL); if (path_equal(switch_root, "/") || !path_is_absolute(switch_root)) return bus_send_error_reply(connection, message, NULL, -EINVAL); if (!isempty(switch_root_init) && !path_is_absolute(switch_root_init)) return bus_send_error_reply(connection, message, NULL, -EINVAL); if (m->running_as != SYSTEMD_SYSTEM) { dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Switching root is only supported for system managers."); return bus_send_error_reply(connection, message, &error, -ENOTSUP); } /* Safety check */ if (isempty(switch_root_init)) k = access(switch_root, F_OK); else { char *p; p = strjoin(switch_root, "/", switch_root_init, NULL); if (!p) goto oom; k = access(p, X_OK); free(p); } if (k < 0) return bus_send_error_reply(connection, message, NULL, -errno); u = strdup(switch_root); if (!u) goto oom; if (!isempty(switch_root_init)) { v = strdup(switch_root_init); if (!v) { free(u); goto oom; } } else v = NULL; free(m->switch_root); free(m->switch_root_init); m->switch_root = u; m->switch_root_init = v; reply = dbus_message_new_method_return(message); if (!reply) goto oom; m->exit_code = MANAGER_SWITCH_ROOT; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) { char **l = NULL, **e = NULL; SELINUX_ACCESS_CHECK(connection, message, "reboot"); r = bus_parse_strv(message, &l); if (r == -ENOMEM) goto oom; if (r < 0) return bus_send_error_reply(connection, message, NULL, r); e = strv_env_merge(2, m->environment, l); strv_free(l); if (!e) goto oom; reply = dbus_message_new_method_return(message); if (!reply) { 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; SELINUX_ACCESS_CHECK(connection, message, "reboot"); r = bus_parse_strv(message, &l); if (r == -ENOMEM) goto oom; if (r < 0) return bus_send_error_reply(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))) { strv_free(e); goto oom; } strv_free(m->environment); m->environment = e; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) { char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL; DBusMessageIter iter; SELINUX_ACCESS_CHECK(connection, message, "reboot"); if (!dbus_message_iter_init(message, &iter)) goto oom; r = bus_parse_strv_iter(&iter, &l_unset); if (r == -ENOMEM) goto oom; if (r < 0) return bus_send_error_reply(connection, message, NULL, r); if (!dbus_message_iter_next(&iter)) { strv_free(l_unset); return bus_send_error_reply(connection, message, NULL, -EINVAL); } r = bus_parse_strv_iter(&iter, &l_set); if (r < 0) { strv_free(l_unset); if (r == -ENOMEM) goto oom; return bus_send_error_reply(connection, message, NULL, r); } e = strv_env_delete(m->environment, 1, l_unset); strv_free(l_unset); if (!e) { strv_free(l_set); goto oom; } f = strv_env_merge(2, e, l_set); strv_free(l_set); strv_free(e); if (!f) goto oom; if (!(reply = dbus_message_new_method_return(message))) { strv_free(f); goto oom; } strv_free(m->environment); m->environment = f; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnitFiles")) { DBusMessageIter iter, sub, sub2; Hashmap *h; Iterator i; UnitFileList *item; SELINUX_ACCESS_CHECK(connection, message, "status"); reply = dbus_message_new_method_return(message); if (!reply) goto oom; h = hashmap_new(string_hash_func, string_compare_func); if (!h) goto oom; r = unit_file_get_list(m->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, h); if (r < 0) { unit_file_list_free(h); dbus_message_unref(reply); return bus_send_error_reply(connection, message, NULL, r); } dbus_message_iter_init_append(reply, &iter); if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ss)", &sub)) { unit_file_list_free(h); goto oom; } HASHMAP_FOREACH(item, h, i) { const char *state; state = unit_file_state_to_string(item->state); assert(state); if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &item->path) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) || !dbus_message_iter_close_container(&sub, &sub2)) { unit_file_list_free(h); goto oom; } } unit_file_list_free(h); if (!dbus_message_iter_close_container(&iter, &sub)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitFileState")) { const char *name; UnitFileState state; const char *s; SELINUX_ACCESS_CHECK(connection, message, "status"); if (!dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID)) return bus_send_error_reply(connection, message, &error, -EINVAL); state = unit_file_get_state(m->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, name); if (state < 0) return bus_send_error_reply(connection, message, NULL, state); s = unit_file_state_to_string(state); assert(s); reply = dbus_message_new_method_return(message); if (!reply) goto oom; if (!dbus_message_append_args( reply, DBUS_TYPE_STRING, &s, DBUS_TYPE_INVALID)) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "EnableUnitFiles") || dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReenableUnitFiles") || dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LinkUnitFiles") || dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PresetUnitFiles") || dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "MaskUnitFiles")) { char **l = NULL; DBusMessageIter iter; UnitFileScope scope = m->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER; UnitFileChange *changes = NULL; unsigned n_changes = 0; dbus_bool_t runtime, force; int carries_install_info = -1; SELINUX_ACCESS_CHECK(connection, message, streq(member, "MaskUnitFiles") ? "disable" : "enable"); if (!dbus_message_iter_init(message, &iter)) goto oom; r = bus_parse_strv_iter(&iter, &l); if (r < 0) { if (r == -ENOMEM) goto oom; return bus_send_error_reply(connection, message, NULL, r); } if (!dbus_message_iter_next(&iter) || bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, true) < 0 || bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &force, false) < 0) { strv_free(l); return bus_send_error_reply(connection, message, NULL, -EIO); } if (streq(member, "EnableUnitFiles")) { r = unit_file_enable(scope, runtime, NULL, l, force, &changes, &n_changes); carries_install_info = r; } else if (streq(member, "ReenableUnitFiles")) { r = unit_file_reenable(scope, runtime, NULL, l, force, &changes, &n_changes); carries_install_info = r; } else if (streq(member, "LinkUnitFiles")) r = unit_file_link(scope, runtime, NULL, l, force, &changes, &n_changes); else if (streq(member, "PresetUnitFiles")) { r = unit_file_preset(scope, runtime, NULL, l, force, &changes, &n_changes); carries_install_info = r; } else if (streq(member, "MaskUnitFiles")) r = unit_file_mask(scope, runtime, NULL, l, force, &changes, &n_changes); else assert_not_reached("Uh? Wrong method"); strv_free(l); bus_manager_send_unit_files_changed(m); if (r < 0) { unit_file_changes_free(changes, n_changes); return bus_send_error_reply(connection, message, NULL, r); } reply = message_from_file_changes(message, changes, n_changes, carries_install_info); unit_file_changes_free(changes, n_changes); if (!reply) goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "DisableUnitFiles") || dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnmaskUnitFiles")) { char **l = NULL; DBusMessageIter iter; UnitFileScope scope = m->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER; UnitFileChange *changes = NULL; unsigned n_changes = 0; dbus_bool_t runtime; SELINUX_ACCESS_CHECK(connection, message, streq(member, "UnmaskUnitFiles") ? "enable" : "disable"); if (!dbus_message_iter_init(message, &iter)) goto oom; r = bus_parse_strv_iter(&iter, &l); if (r < 0) { if (r == -ENOMEM) goto oom; return bus_send_error_reply(connection, message, NULL, r); } if (!dbus_message_iter_next(&iter) || bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, false) < 0) { strv_free(l); return bus_send_error_reply(connection, message, NULL, -EIO); } if (streq(member, "DisableUnitFiles")) r = unit_file_disable(scope, runtime, NULL, l, &changes, &n_changes); else if (streq(member, "UnmaskUnitFiles")) r = unit_file_unmask(scope, runtime, NULL, l, &changes, &n_changes); else assert_not_reached("Uh? Wrong method"); strv_free(l); bus_manager_send_unit_files_changed(m); if (r < 0) { unit_file_changes_free(changes, n_changes); return bus_send_error_reply(connection, message, NULL, r); } reply = message_from_file_changes(message, changes, n_changes, -1); unit_file_changes_free(changes, n_changes); if (!reply) goto oom; } else { const BusBoundProperties bps[] = { { "org.freedesktop.systemd1.Manager", bus_systemd_properties, systemd_property_string }, { "org.freedesktop.systemd1.Manager", bus_manager_properties, m }, { NULL, } }; SELINUX_ACCESS_CHECK(connection, message, "status"); return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps); } if (job_type != _JOB_TYPE_INVALID) { const char *name, *smode, *old_name = NULL; JobMode mode; Unit *u; dbus_bool_t b; if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace")) b = dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &old_name, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &smode, DBUS_TYPE_INVALID); else b = dbus_message_get_args( message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &smode, DBUS_TYPE_INVALID); if (!b) return bus_send_error_reply(connection, message, &error, -EINVAL); if (old_name) { u = manager_get_unit(m, old_name); if (!u || !u->job || u->job->type != JOB_START) { dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name); return bus_send_error_reply(connection, message, &error, -ENOENT); } } mode = job_mode_from_string(smode); if (mode < 0) { dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode); return bus_send_error_reply(connection, message, &error, -EINVAL); } r = manager_load_unit(m, name, NULL, &error, &u); if (r < 0) return bus_send_error_reply(connection, message, &error, r); return bus_unit_queue_job(connection, message, u, job_type, mode, reload_if_possible); } if (reply) if (!dbus_connection_send(connection, reply, NULL)) goto oom; return DBUS_HANDLER_RESULT_HANDLED; oom: dbus_error_free(&error); return DBUS_HANDLER_RESULT_NEED_MEMORY; } const DBusObjectPathVTable bus_manager_vtable = { .message_function = bus_manager_message_handler };