src/dbus-manager.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23
  24 #include "dbus.h"
  25 #include "log.h"
  26 #include "dbus-manager.h"
  27 #include "strv.h"
  28 #include "bus-errors.h"
  29 #include "build.h"
  30
  31 #define BUS_MANAGER_INTERFACE_BEGIN                                     \
  32         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
  33
  34 #define BUS_MANAGER_INTERFACE_METHODS                                   \
  35         "  <method name=\"GetUnit\">\n"                                 \
  36         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  37         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  38         "  </method>\n"                                                 \
  39         "  <method name=\"GetUnitByPID\">\n"                            \
  40         "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
  41         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  42         "  </method>\n"                                                 \
  43         "  <method name=\"LoadUnit\">\n"                                \
  44         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  45         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  46         "  </method>\n"                                                 \
  47         "  <method name=\"StartUnit\">\n"                               \
  48         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  49         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  50         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  51         "  </method>\n"                                                 \
  52         "  <method name=\"StartUnitReplace\">\n"                        \
  53         "   <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n"     \
  54         "   <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n"     \
  55         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  56         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  57         "  </method>\n"                                                 \
  58         "  <method name=\"StopUnit\">\n"                                \
  59         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  60         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  61         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  62         "  </method>\n"                                                 \
  63         "  <method name=\"ReloadUnit\">\n"                              \
  64         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  65         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  66         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  67         "  </method>\n"                                                 \
  68         "  <method name=\"RestartUnit\">\n"                             \
  69         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  70         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  71         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  72         "  </method>\n"                                                 \
  73         "  <method name=\"TryRestartUnit\">\n"                          \
  74         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  75         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  76         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  77         "  </method>\n"                                                 \
  78         "  <method name=\"ReloadOrRestartUnit\">\n"                     \
  79         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  80         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  81         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  82         "  </method>\n"                                                 \
  83         "  <method name=\"ReloadOrTryRestartUnit\">\n"                  \
  84         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  85         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  86         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  87         "  </method>\n"                                                 \
  88         "  <method name=\"KillUnit\">\n"                                \
  89         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  90         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
  91         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  92         "   <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n"       \
  93         "  </method>\n"                                                 \
  94         "  <method name=\"ResetFailedUnit\">\n"                         \
  95         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  96         "  </method>\n"                                                 \
  97         "  <method name=\"GetJob\">\n"                                  \
  98         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
  99         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
 100         "  </method>\n"                                                 \
 101         "  <method name=\"ClearJobs\"/>\n"                              \
 102         "  <method name=\"ResetFailed\"/>\n"                            \
 103         "  <method name=\"ListUnits\">\n"                               \
 104         "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
 105         "  </method>\n"                                                 \
 106         "  <method name=\"ListJobs\">\n"                                \
 107         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
 108         "  </method>\n"                                                 \
 109         "  <method name=\"Subscribe\"/>\n"                              \
 110         "  <method name=\"Unsubscribe\"/>\n"                            \
 111         "  <method name=\"Dump\"/>\n"                                   \
 112         "  <method name=\"CreateSnapshot\">\n"                          \
 113         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
 114         "   <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
 115         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
 116         "  </method>\n"                                                 \
 117         "  <method name=\"Reload\"/>\n"                                 \
 118         "  <method name=\"Reexecute\"/>\n"                              \
 119         "  <method name=\"Exit\"/>\n"                                   \
 120         "  <method name=\"Reboot\"/>\n"                                 \
 121         "  <method name=\"PowerOff\"/>\n"                               \
 122         "  <method name=\"Halt\"/>\n"                                   \
 123         "  <method name=\"KExec\"/>\n"                                  \
 124         "  <method name=\"SetEnvironment\">\n"                          \
 125         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 126         "  </method>\n"                                                 \
 127         "  <method name=\"UnsetEnvironment\">\n"                        \
 128         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 129         "  </method>\n"
 130
 131 #define BUS_MANAGER_INTERFACE_SIGNALS                                   \
 132         "  <signal name=\"UnitNew\">\n"                                 \
 133         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 134         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 135         "  </signal>\n"                                                 \
 136         "  <signal name=\"UnitRemoved\">\n"                             \
 137         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 138         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 139         "  </signal>\n"                                                 \
 140         "  <signal name=\"JobNew\">\n"                                  \
 141         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 142         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 143         "  </signal>\n"                                                 \
 144         "  <signal name=\"JobRemoved\">\n"                              \
 145         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 146         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 147         "   <arg name=\"result\" type=\"s\"/>\n"                        \
 148         "  </signal>"
 149
 150 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 151         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 152         "  <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
 153         "  <property name=\"Features\" type=\"s\" access=\"read\"/\n"   \
 154         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 155         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 156         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 157         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 158         "  <property name=\"LogLevel\" type=\"s\" access=\"read\"/>\n"  \
 159         "  <property name=\"LogTarget\" type=\"s\" access=\"read\"/>\n" \
 160         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 161         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 162         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 163         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 164         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 165         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 166         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 167         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 168         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 169         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 170         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 171         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 172         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 173         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 174         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 175         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 176
 177 #ifdef HAVE_SYSV_COMPAT
 178 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 179         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 180         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 181         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 182 #else
 183 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 184 #endif
 185
 186 #define BUS_MANAGER_INTERFACE_END                                       \
 187         " </interface>\n"
 188
 189 #define BUS_MANAGER_INTERFACE                                           \
 190         BUS_MANAGER_INTERFACE_BEGIN                                     \
 191         BUS_MANAGER_INTERFACE_METHODS                                   \
 192         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 193         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 194         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 195         BUS_MANAGER_INTERFACE_END
 196
 197 #define INTROSPECTION_BEGIN                                             \
 198         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 199         "<node>\n"                                                      \
 200         BUS_MANAGER_INTERFACE                                           \
 201         BUS_PROPERTIES_INTERFACE                                        \
 202         BUS_PEER_INTERFACE                                              \
 203         BUS_INTROSPECTABLE_INTERFACE
 204
 205 #define INTROSPECTION_END                                               \
 206         "</node>\n"
 207
 208 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 209
 210 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 211 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 212
 213 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 214         const char *t;
 215
 216         assert(m);
 217         assert(i);
 218         assert(property);
 219
 220         t = log_target_to_string(log_get_target());
 221
 222         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 223                 return -ENOMEM;
 224
 225         return 0;
 226 }
 227
 228 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 229         const char *t;
 230
 231         assert(m);
 232         assert(i);
 233         assert(property);
 234
 235         t = log_level_to_string(log_get_max_level());
 236
 237         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 238                 return -ENOMEM;
 239
 240         return 0;
 241 }
 242
 243 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 244         uint32_t u;
 245
 246         assert(m);
 247         assert(i);
 248         assert(property);
 249
 250         u = hashmap_size(m->units);
 251
 252         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 253                 return -ENOMEM;
 254
 255         return 0;
 256 }
 257
 258 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 259         uint32_t u;
 260
 261         assert(m);
 262         assert(i);
 263         assert(property);
 264
 265         u = hashmap_size(m->jobs);
 266
 267         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 268                 return -ENOMEM;
 269
 270         return 0;
 271 }
 272
 273 static int bus_manager_append_progress(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 274         double d;
 275
 276         assert(m);
 277         assert(i);
 278         assert(property);
 279
 280         if (dual_timestamp_is_set(&m->finish_timestamp))
 281                 d = 1.0;
 282         else
 283                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 284
 285         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 286                 return -ENOMEM;
 287
 288         return 0;
 289 }
 290
 291 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 292         const char *s;
 293
 294         assert(m);
 295
 296         if ((s = dbus_message_get_sender(m)))
 297                 return s;
 298
 299         /* When the message came in from a direct connection the
 300          * message will have no sender. We fix that here. */
 301
 302         return ":no-sender";
 303 }
 304
 305 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 306         Manager *m = data;
 307
 308         const BusProperty properties[] = {
 309                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 310                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 311                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 312                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 313                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 314                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 315                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 316                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  NULL               },
 317                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  NULL               },
 318                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  NULL               },
 319                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  NULL               },
 320                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 321                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 322                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  NULL               },
 323                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 324                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 325                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 326                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 327                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 328                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 329                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 330                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 331                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 332                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 333                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 334 #ifdef HAVE_SYSV_COMPAT
 335                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 336                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 337                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 338 #endif
 339                 { NULL, NULL, NULL, NULL, NULL }
 340         };
 341
 342         int r;
 343         DBusError error;
 344         DBusMessage *reply = NULL;
 345         char * path = NULL;
 346         JobType job_type = _JOB_TYPE_INVALID;
 347         bool reload_if_possible = false;
 348
 349         assert(connection);
 350         assert(message);
 351         assert(m);
 352
 353         dbus_error_init(&error);
 354
 355         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 356                 const char *name;
 357                 Unit *u;
 358
 359                 if (!dbus_message_get_args(
 360                                     message,
 361                                     &error,
 362                                     DBUS_TYPE_STRING, &name,
 363                                     DBUS_TYPE_INVALID))
 364                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 365
 366                 if (!(u = manager_get_unit(m, name))) {
 367                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 368                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 369                 }
 370
 371                 if (!(reply = dbus_message_new_method_return(message)))
 372                         goto oom;
 373
 374                 if (!(path = unit_dbus_path(u)))
 375                         goto oom;
 376
 377                 if (!dbus_message_append_args(
 378                                     reply,
 379                                     DBUS_TYPE_OBJECT_PATH, &path,
 380                                     DBUS_TYPE_INVALID))
 381                         goto oom;
 382         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 383                 Unit *u;
 384                 uint32_t pid;
 385
 386                 if (!dbus_message_get_args(
 387                                     message,
 388                                     &error,
 389                                     DBUS_TYPE_UINT32, &pid,
 390                                     DBUS_TYPE_INVALID))
 391                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 392
 393                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 394                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 395                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 396                 }
 397
 398                 if (!(reply = dbus_message_new_method_return(message)))
 399                         goto oom;
 400
 401                 if (!(path = unit_dbus_path(u)))
 402                         goto oom;
 403
 404                 if (!dbus_message_append_args(
 405                                     reply,
 406                                     DBUS_TYPE_OBJECT_PATH, &path,
 407                                     DBUS_TYPE_INVALID))
 408                         goto oom;
 409         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 410                 const char *name;
 411                 Unit *u;
 412
 413                 if (!dbus_message_get_args(
 414                                     message,
 415                                     &error,
 416                                     DBUS_TYPE_STRING, &name,
 417                                     DBUS_TYPE_INVALID))
 418                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 419
 420                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 421                         return bus_send_error_reply(m, connection, message, &error, r);
 422
 423                 if (!(reply = dbus_message_new_method_return(message)))
 424                         goto oom;
 425
 426                 if (!(path = unit_dbus_path(u)))
 427                         goto oom;
 428
 429                 if (!dbus_message_append_args(
 430                                     reply,
 431                                     DBUS_TYPE_OBJECT_PATH, &path,
 432                                     DBUS_TYPE_INVALID))
 433                         goto oom;
 434
 435         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 436                 job_type = JOB_START;
 437         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 438                 job_type = JOB_START;
 439         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 440                 job_type = JOB_STOP;
 441         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 442                 job_type = JOB_RELOAD;
 443         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 444                 job_type = JOB_RESTART;
 445         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 446                 job_type = JOB_TRY_RESTART;
 447         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 448                 reload_if_possible = true;
 449                 job_type = JOB_RESTART;
 450         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 451                 reload_if_possible = true;
 452                 job_type = JOB_TRY_RESTART;
 453         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 454                 const char *name, *swho, *smode;
 455                 int32_t signo;
 456                 Unit *u;
 457                 KillMode mode;
 458                 KillWho who;
 459
 460                 if (!dbus_message_get_args(
 461                                     message,
 462                                     &error,
 463                                     DBUS_TYPE_STRING, &name,
 464                                     DBUS_TYPE_STRING, &swho,
 465                                     DBUS_TYPE_STRING, &smode,
 466                                     DBUS_TYPE_INT32, &signo,
 467                                     DBUS_TYPE_INVALID))
 468                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 469
 470                 if ((mode = kill_mode_from_string(smode)) < 0 ||
 471                     (who = kill_who_from_string(swho)) < 0 ||
 472                     signo <= 0 ||
 473                     signo >= _NSIG)
 474                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 475
 476                 if (!(u = manager_get_unit(m, name))) {
 477                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 478                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 479                 }
 480
 481                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 482                         return bus_send_error_reply(m, connection, message, &error, r);
 483
 484                 if (!(reply = dbus_message_new_method_return(message)))
 485                         goto oom;
 486
 487         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 488                 uint32_t id;
 489                 Job *j;
 490
 491                 if (!dbus_message_get_args(
 492                                     message,
 493                                     &error,
 494                                     DBUS_TYPE_UINT32, &id,
 495                                     DBUS_TYPE_INVALID))
 496                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 497
 498                 if (!(j = manager_get_job(m, id))) {
 499                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 500                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 501                 }
 502
 503                 if (!(reply = dbus_message_new_method_return(message)))
 504                         goto oom;
 505
 506                 if (!(path = job_dbus_path(j)))
 507                         goto oom;
 508
 509                 if (!dbus_message_append_args(
 510                                     reply,
 511                                     DBUS_TYPE_OBJECT_PATH, &path,
 512                                     DBUS_TYPE_INVALID))
 513                         goto oom;
 514
 515         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 516
 517                 manager_clear_jobs(m);
 518
 519                 if (!(reply = dbus_message_new_method_return(message)))
 520                         goto oom;
 521
 522         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 523
 524                 manager_reset_failed(m);
 525
 526                 if (!(reply = dbus_message_new_method_return(message)))
 527                         goto oom;
 528
 529         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 530                 const char *name;
 531                 Unit *u;
 532
 533                 if (!dbus_message_get_args(
 534                                     message,
 535                                     &error,
 536                                     DBUS_TYPE_STRING, &name,
 537                                     DBUS_TYPE_INVALID))
 538                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 539
 540                 if (!(u = manager_get_unit(m, name))) {
 541                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 542                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 543                 }
 544
 545                 unit_reset_failed(u);
 546
 547                 if (!(reply = dbus_message_new_method_return(message)))
 548                         goto oom;
 549
 550         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 551                 DBusMessageIter iter, sub;
 552                 Iterator i;
 553                 Unit *u;
 554                 const char *k;
 555
 556                 if (!(reply = dbus_message_new_method_return(message)))
 557                         goto oom;
 558
 559                 dbus_message_iter_init_append(reply, &iter);
 560
 561                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 562                         goto oom;
 563
 564                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 565                         char *u_path, *j_path;
 566                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 567                         DBusMessageIter sub2;
 568                         uint32_t job_id;
 569                         Unit *f;
 570
 571                         if (k != u->meta.id)
 572                                 continue;
 573
 574                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 575                                 goto oom;
 576
 577                         description = unit_description(u);
 578                         load_state = unit_load_state_to_string(u->meta.load_state);
 579                         active_state = unit_active_state_to_string(unit_active_state(u));
 580                         sub_state = unit_sub_state_to_string(u);
 581
 582                         f = unit_following(u);
 583                         following = f ? f->meta.id : "";
 584
 585                         if (!(u_path = unit_dbus_path(u)))
 586                                 goto oom;
 587
 588                         if (u->meta.job) {
 589                                 job_id = (uint32_t) u->meta.job->id;
 590
 591                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 592                                         free(u_path);
 593                                         goto oom;
 594                                 }
 595
 596                                 sjob_type = job_type_to_string(u->meta.job->type);
 597                         } else {
 598                                 job_id = 0;
 599                                 j_path = u_path;
 600                                 sjob_type = "";
 601                         }
 602
 603                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 604                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 605                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 606                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 607                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 608                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 609                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 610                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 611                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 612                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 613                                 free(u_path);
 614                                 if (u->meta.job)
 615                                         free(j_path);
 616                                 goto oom;
 617                         }
 618
 619                         free(u_path);
 620                         if (u->meta.job)
 621                                 free(j_path);
 622
 623                         if (!dbus_message_iter_close_container(&sub, &sub2))
 624                                 goto oom;
 625                 }
 626
 627                 if (!dbus_message_iter_close_container(&iter, &sub))
 628                         goto oom;
 629
 630         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 631                 DBusMessageIter iter, sub;
 632                 Iterator i;
 633                 Job *j;
 634
 635                 if (!(reply = dbus_message_new_method_return(message)))
 636                         goto oom;
 637
 638                 dbus_message_iter_init_append(reply, &iter);
 639
 640                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 641                         goto oom;
 642
 643                 HASHMAP_FOREACH(j, m->jobs, i) {
 644                         char *u_path, *j_path;
 645                         const char *state, *type;
 646                         uint32_t id;
 647                         DBusMessageIter sub2;
 648
 649                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 650                                 goto oom;
 651
 652                         id = (uint32_t) j->id;
 653                         state = job_state_to_string(j->state);
 654                         type = job_type_to_string(j->type);
 655
 656                         if (!(j_path = job_dbus_path(j)))
 657                                 goto oom;
 658
 659                         if (!(u_path = unit_dbus_path(j->unit))) {
 660                                 free(j_path);
 661                                 goto oom;
 662                         }
 663
 664                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 665                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 666                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 667                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 668                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 669                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 670                                 free(j_path);
 671                                 free(u_path);
 672                                 goto oom;
 673                         }
 674
 675                         free(j_path);
 676                         free(u_path);
 677
 678                         if (!dbus_message_iter_close_container(&sub, &sub2))
 679                                 goto oom;
 680                 }
 681
 682                 if (!dbus_message_iter_close_container(&iter, &sub))
 683                         goto oom;
 684
 685         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 686                 char *client;
 687                 Set *s;
 688
 689                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 690                         if (!(s = set_new(string_hash_func, string_compare_func)))
 691                                 goto oom;
 692
 693                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 694                                 set_free(s);
 695                                 goto oom;
 696                         }
 697                 }
 698
 699                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 700                         goto oom;
 701
 702                 if ((r = set_put(s, client)) < 0) {
 703                         free(client);
 704                         return bus_send_error_reply(m, connection, message, NULL, r);
 705                 }
 706
 707                 if (!(reply = dbus_message_new_method_return(message)))
 708                         goto oom;
 709
 710         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 711                 char *client;
 712
 713                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 714                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 715                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 716                 }
 717
 718                 free(client);
 719
 720                 if (!(reply = dbus_message_new_method_return(message)))
 721                         goto oom;
 722
 723         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 724                 FILE *f;
 725                 char *dump = NULL;
 726                 size_t size;
 727
 728                 if (!(reply = dbus_message_new_method_return(message)))
 729                         goto oom;
 730
 731                 if (!(f = open_memstream(&dump, &size)))
 732                         goto oom;
 733
 734                 manager_dump_units(m, f, NULL);
 735                 manager_dump_jobs(m, f, NULL);
 736
 737                 if (ferror(f)) {
 738                         fclose(f);
 739                         free(dump);
 740                         goto oom;
 741                 }
 742
 743                 fclose(f);
 744
 745                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 746                         free(dump);
 747                         goto oom;
 748                 }
 749
 750                 free(dump);
 751         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 752                 const char *name;
 753                 dbus_bool_t cleanup;
 754                 Snapshot *s;
 755
 756                 if (!dbus_message_get_args(
 757                                     message,
 758                                     &error,
 759                                     DBUS_TYPE_STRING, &name,
 760                                     DBUS_TYPE_BOOLEAN, &cleanup,
 761                                     DBUS_TYPE_INVALID))
 762                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 763
 764                 if (name && name[0] == 0)
 765                         name = NULL;
 766
 767                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 768                         return bus_send_error_reply(m, connection, message, &error, r);
 769
 770                 if (!(reply = dbus_message_new_method_return(message)))
 771                         goto oom;
 772
 773                 if (!(path = unit_dbus_path(UNIT(s))))
 774                         goto oom;
 775
 776                 if (!dbus_message_append_args(
 777                                     reply,
 778                                     DBUS_TYPE_OBJECT_PATH, &path,
 779                                     DBUS_TYPE_INVALID))
 780                         goto oom;
 781
 782         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 783                 char *introspection = NULL;
 784                 FILE *f;
 785                 Iterator i;
 786                 Unit *u;
 787                 Job *j;
 788                 const char *k;
 789                 size_t size;
 790
 791                 if (!(reply = dbus_message_new_method_return(message)))
 792                         goto oom;
 793
 794                 /* We roll our own introspection code here, instead of
 795                  * relying on bus_default_message_handler() because we
 796                  * need to generate our introspection string
 797                  * dynamically. */
 798
 799                 if (!(f = open_memstream(&introspection, &size)))
 800                         goto oom;
 801
 802                 fputs(INTROSPECTION_BEGIN, f);
 803
 804                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 805                         char *p;
 806
 807                         if (k != u->meta.id)
 808                                 continue;
 809
 810                         if (!(p = bus_path_escape(k))) {
 811                                 fclose(f);
 812                                 free(introspection);
 813                                 goto oom;
 814                         }
 815
 816                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 817                         free(p);
 818                 }
 819
 820                 HASHMAP_FOREACH(j, m->jobs, i)
 821                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 822
 823                 fputs(INTROSPECTION_END, f);
 824
 825                 if (ferror(f)) {
 826                         fclose(f);
 827                         free(introspection);
 828                         goto oom;
 829                 }
 830
 831                 fclose(f);
 832
 833                 if (!introspection)
 834                         goto oom;
 835
 836                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 837                         free(introspection);
 838                         goto oom;
 839                 }
 840
 841                 free(introspection);
 842
 843         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 844
 845                 assert(!m->queued_message);
 846
 847                 /* Instead of sending the reply back right away, we
 848                  * just remember that we need to and then send it
 849                  * after the reload is finished. That way the caller
 850                  * knows when the reload finished. */
 851
 852                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 853                         goto oom;
 854
 855                 m->queued_message_connection = connection;
 856                 m->exit_code = MANAGER_RELOAD;
 857
 858         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 859
 860                 if (!(reply = dbus_message_new_method_return(message)))
 861                         goto oom;
 862
 863                 m->exit_code = MANAGER_REEXECUTE;
 864
 865         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 866
 867                 if (m->running_as == MANAGER_SYSTEM) {
 868                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
 869                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 870                 }
 871
 872                 if (!(reply = dbus_message_new_method_return(message)))
 873                         goto oom;
 874
 875                 m->exit_code = MANAGER_EXIT;
 876
 877         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 878
 879                 if (m->running_as != MANAGER_SYSTEM) {
 880                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
 881                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 882                 }
 883
 884                 if (!(reply = dbus_message_new_method_return(message)))
 885                         goto oom;
 886
 887                 m->exit_code = MANAGER_REBOOT;
 888
 889         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 890
 891                 if (m->running_as != MANAGER_SYSTEM) {
 892                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
 893                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 894                 }
 895
 896                 if (!(reply = dbus_message_new_method_return(message)))
 897                         goto oom;
 898
 899                 m->exit_code = MANAGER_POWEROFF;
 900
 901         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 902
 903                 if (m->running_as != MANAGER_SYSTEM) {
 904                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 905                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 906                 }
 907
 908                 if (!(reply = dbus_message_new_method_return(message)))
 909                         goto oom;
 910
 911                 m->exit_code = MANAGER_HALT;
 912
 913         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
 914
 915                 if (m->running_as != MANAGER_SYSTEM) {
 916                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
 917                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 918                 }
 919
 920                 if (!(reply = dbus_message_new_method_return(message)))
 921                         goto oom;
 922
 923                 m->exit_code = MANAGER_KEXEC;
 924
 925         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 926                 char **l = NULL, **e = NULL;
 927
 928                 if ((r = bus_parse_strv(message, &l)) < 0) {
 929                         if (r == -ENOMEM)
 930                                 goto oom;
 931
 932                         return bus_send_error_reply(m, connection, message, NULL, r);
 933                 }
 934
 935                 e = strv_env_merge(2, m->environment, l);
 936                 strv_free(l);
 937
 938                 if (!e)
 939                         goto oom;
 940
 941                 if (!(reply = dbus_message_new_method_return(message))) {
 942                         strv_free(e);
 943                         goto oom;
 944                 }
 945
 946                 strv_free(m->environment);
 947                 m->environment = e;
 948
 949         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
 950                 char **l = NULL, **e = NULL;
 951
 952                 if ((r = bus_parse_strv(message, &l)) < 0) {
 953                         if (r == -ENOMEM)
 954                                 goto oom;
 955
 956                         return bus_send_error_reply(m, connection, message, NULL, r);
 957                 }
 958
 959                 e = strv_env_delete(m->environment, 1, l);
 960                 strv_free(l);
 961
 962                 if (!e)
 963                         goto oom;
 964
 965                 if (!(reply = dbus_message_new_method_return(message)))
 966                         goto oom;
 967
 968                 strv_free(m->environment);
 969                 m->environment = e;
 970
 971         } else
 972                 return bus_default_message_handler(m, connection, message, NULL, properties);
 973
 974         if (job_type != _JOB_TYPE_INVALID) {
 975                 const char *name, *smode, *old_name = NULL;
 976                 JobMode mode;
 977                 Job *j;
 978                 Unit *u;
 979                 bool b;
 980
 981                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 982                         b = dbus_message_get_args(
 983                                         message,
 984                                         &error,
 985                                         DBUS_TYPE_STRING, &old_name,
 986                                         DBUS_TYPE_STRING, &name,
 987                                         DBUS_TYPE_STRING, &smode,
 988                                         DBUS_TYPE_INVALID);
 989                 else
 990                         b = dbus_message_get_args(
 991                                         message,
 992                                         &error,
 993                                         DBUS_TYPE_STRING, &name,
 994                                         DBUS_TYPE_STRING, &smode,
 995                                         DBUS_TYPE_INVALID);
 996
 997                 if (!b)
 998                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 999
1000                 if (old_name)
1001                         if (!(u = manager_get_unit(m, old_name)) ||
1002                             !u->meta.job ||
1003                             u->meta.job->type != JOB_START) {
1004                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1005                                 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
1006                         }
1007
1008
1009                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1010                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1011                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1012                 }
1013
1014                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1015                         return bus_send_error_reply(m, connection, message, &error, r);
1016
1017                 if (reload_if_possible && unit_can_reload(u)) {
1018                         if (job_type == JOB_RESTART)
1019                                 job_type = JOB_RELOAD_OR_START;
1020                         else if (job_type == JOB_TRY_RESTART)
1021                                 job_type = JOB_RELOAD;
1022                 }
1023
1024                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1025                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1026                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1027                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1028                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1029                         return bus_send_error_reply(m, connection, message, &error, -EPERM);
1030                 }
1031
1032                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1033                         return bus_send_error_reply(m, connection, message, &error, r);
1034
1035                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1036                         goto oom;
1037
1038                 j->bus = connection;
1039
1040                 if (!(reply = dbus_message_new_method_return(message)))
1041                         goto oom;
1042
1043                 if (!(path = job_dbus_path(j)))
1044                         goto oom;
1045
1046                 if (!dbus_message_append_args(
1047                                     reply,
1048                                     DBUS_TYPE_OBJECT_PATH, &path,
1049                                     DBUS_TYPE_INVALID))
1050                         goto oom;
1051         }
1052
1053         free(path);
1054
1055         if (reply) {
1056                 if (!dbus_connection_send(connection, reply, NULL))
1057                         goto oom;
1058
1059                 dbus_message_unref(reply);
1060         }
1061
1062         return DBUS_HANDLER_RESULT_HANDLED;
1063
1064 oom:
1065         free(path);
1066
1067         if (reply)
1068                 dbus_message_unref(reply);
1069
1070         dbus_error_free(&error);
1071
1072         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1073 }
1074
1075 const DBusObjectPathVTable bus_manager_vtable = {
1076         .message_function = bus_manager_message_handler
1077 };