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=\"Tainted\" type=\"s\" access=\"read\"/>\n"   \
 155         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 156         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 157         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 158         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 159         "  <property name=\"LogLevel\" type=\"s\" access=\"read\"/>\n"  \
 160         "  <property name=\"LogTarget\" type=\"s\" access=\"read\"/>\n" \
 161         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 162         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 163         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 164         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 165         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 166         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 167         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 168         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 169         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 170         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 171         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 172         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 173         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 174         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 175         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 176         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 177
 178 #ifdef HAVE_SYSV_COMPAT
 179 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 180         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 181         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 182         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 183 #else
 184 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 185 #endif
 186
 187 #define BUS_MANAGER_INTERFACE_END                                       \
 188         " </interface>\n"
 189
 190 #define BUS_MANAGER_INTERFACE                                           \
 191         BUS_MANAGER_INTERFACE_BEGIN                                     \
 192         BUS_MANAGER_INTERFACE_METHODS                                   \
 193         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 194         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 195         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 196         BUS_MANAGER_INTERFACE_END
 197
 198 #define INTROSPECTION_BEGIN                                             \
 199         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 200         "<node>\n"                                                      \
 201         BUS_MANAGER_INTERFACE                                           \
 202         BUS_PROPERTIES_INTERFACE                                        \
 203         BUS_PEER_INTERFACE                                              \
 204         BUS_INTROSPECTABLE_INTERFACE
 205
 206 #define INTROSPECTION_END                                               \
 207         "</node>\n"
 208
 209 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 210
 211 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 212 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 213
 214 static int bus_manager_append_tainted(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 215         const char *t;
 216         char buf[64] = "", *e = buf, *p = NULL;
 217
 218         assert(m);
 219         assert(i);
 220         assert(property);
 221
 222         if (path_is_mount_point("/usr") > 0 || dir_is_empty("/usr") > 0)
 223                 e = stpcpy(e, "usr-separate-fs");
 224
 225         if (readlink_malloc("/etc/mtab", &p) < 0) {
 226                 if (e != buf)
 227                         e = stpcpy(e, " ");
 228                 e = stpcpy(e, "etc-mtab-not-symlink");
 229         } else
 230                 free(p);
 231
 232         t = buf;
 233
 234         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 235                 return -ENOMEM;
 236
 237         return 0;
 238 }
 239
 240 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 241         const char *t;
 242
 243         assert(m);
 244         assert(i);
 245         assert(property);
 246
 247         t = log_target_to_string(log_get_target());
 248
 249         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 250                 return -ENOMEM;
 251
 252         return 0;
 253 }
 254
 255 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 256         const char *t;
 257
 258         assert(m);
 259         assert(i);
 260         assert(property);
 261
 262         t = log_level_to_string(log_get_max_level());
 263
 264         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 265                 return -ENOMEM;
 266
 267         return 0;
 268 }
 269
 270 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 271         uint32_t u;
 272
 273         assert(m);
 274         assert(i);
 275         assert(property);
 276
 277         u = hashmap_size(m->units);
 278
 279         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 280                 return -ENOMEM;
 281
 282         return 0;
 283 }
 284
 285 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 286         uint32_t u;
 287
 288         assert(m);
 289         assert(i);
 290         assert(property);
 291
 292         u = hashmap_size(m->jobs);
 293
 294         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 295                 return -ENOMEM;
 296
 297         return 0;
 298 }
 299
 300 static int bus_manager_append_progress(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 301         double d;
 302
 303         assert(m);
 304         assert(i);
 305         assert(property);
 306
 307         if (dual_timestamp_is_set(&m->finish_timestamp))
 308                 d = 1.0;
 309         else
 310                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 311
 312         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 313                 return -ENOMEM;
 314
 315         return 0;
 316 }
 317
 318 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 319         const char *s;
 320
 321         assert(m);
 322
 323         if ((s = dbus_message_get_sender(m)))
 324                 return s;
 325
 326         /* When the message came in from a direct connection the
 327          * message will have no sender. We fix that here. */
 328
 329         return ":no-sender";
 330 }
 331
 332 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 333         Manager *m = data;
 334
 335         const BusProperty properties[] = {
 336                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 337                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 338                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 339                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 340                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 341                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 342                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 343                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 344                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  NULL               },
 345                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  NULL               },
 346                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  NULL               },
 347                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  NULL               },
 348                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 349                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 350                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  NULL               },
 351                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 352                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 353                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 354                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 355                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 356                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 357                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 358                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 359                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 360                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 361                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 362 #ifdef HAVE_SYSV_COMPAT
 363                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 364                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 365                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 366 #endif
 367                 { NULL, NULL, NULL, NULL, NULL }
 368         };
 369
 370         int r;
 371         DBusError error;
 372         DBusMessage *reply = NULL;
 373         char * path = NULL;
 374         JobType job_type = _JOB_TYPE_INVALID;
 375         bool reload_if_possible = false;
 376
 377         assert(connection);
 378         assert(message);
 379         assert(m);
 380
 381         dbus_error_init(&error);
 382
 383         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 384                 const char *name;
 385                 Unit *u;
 386
 387                 if (!dbus_message_get_args(
 388                                     message,
 389                                     &error,
 390                                     DBUS_TYPE_STRING, &name,
 391                                     DBUS_TYPE_INVALID))
 392                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 393
 394                 if (!(u = manager_get_unit(m, name))) {
 395                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 396                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 397                 }
 398
 399                 if (!(reply = dbus_message_new_method_return(message)))
 400                         goto oom;
 401
 402                 if (!(path = unit_dbus_path(u)))
 403                         goto oom;
 404
 405                 if (!dbus_message_append_args(
 406                                     reply,
 407                                     DBUS_TYPE_OBJECT_PATH, &path,
 408                                     DBUS_TYPE_INVALID))
 409                         goto oom;
 410         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 411                 Unit *u;
 412                 uint32_t pid;
 413
 414                 if (!dbus_message_get_args(
 415                                     message,
 416                                     &error,
 417                                     DBUS_TYPE_UINT32, &pid,
 418                                     DBUS_TYPE_INVALID))
 419                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 420
 421                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 422                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 423                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 424                 }
 425
 426                 if (!(reply = dbus_message_new_method_return(message)))
 427                         goto oom;
 428
 429                 if (!(path = unit_dbus_path(u)))
 430                         goto oom;
 431
 432                 if (!dbus_message_append_args(
 433                                     reply,
 434                                     DBUS_TYPE_OBJECT_PATH, &path,
 435                                     DBUS_TYPE_INVALID))
 436                         goto oom;
 437         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 438                 const char *name;
 439                 Unit *u;
 440
 441                 if (!dbus_message_get_args(
 442                                     message,
 443                                     &error,
 444                                     DBUS_TYPE_STRING, &name,
 445                                     DBUS_TYPE_INVALID))
 446                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 447
 448                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 449                         return bus_send_error_reply(m, connection, message, &error, r);
 450
 451                 if (!(reply = dbus_message_new_method_return(message)))
 452                         goto oom;
 453
 454                 if (!(path = unit_dbus_path(u)))
 455                         goto oom;
 456
 457                 if (!dbus_message_append_args(
 458                                     reply,
 459                                     DBUS_TYPE_OBJECT_PATH, &path,
 460                                     DBUS_TYPE_INVALID))
 461                         goto oom;
 462
 463         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 464                 job_type = JOB_START;
 465         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 466                 job_type = JOB_START;
 467         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 468                 job_type = JOB_STOP;
 469         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 470                 job_type = JOB_RELOAD;
 471         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 472                 job_type = JOB_RESTART;
 473         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 474                 job_type = JOB_TRY_RESTART;
 475         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 476                 reload_if_possible = true;
 477                 job_type = JOB_RESTART;
 478         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 479                 reload_if_possible = true;
 480                 job_type = JOB_TRY_RESTART;
 481         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 482                 const char *name, *swho, *smode;
 483                 int32_t signo;
 484                 Unit *u;
 485                 KillMode mode;
 486                 KillWho who;
 487
 488                 if (!dbus_message_get_args(
 489                                     message,
 490                                     &error,
 491                                     DBUS_TYPE_STRING, &name,
 492                                     DBUS_TYPE_STRING, &swho,
 493                                     DBUS_TYPE_STRING, &smode,
 494                                     DBUS_TYPE_INT32, &signo,
 495                                     DBUS_TYPE_INVALID))
 496                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 497
 498                 if ((mode = kill_mode_from_string(smode)) < 0 ||
 499                     (who = kill_who_from_string(swho)) < 0 ||
 500                     signo <= 0 ||
 501                     signo >= _NSIG)
 502                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 503
 504                 if (!(u = manager_get_unit(m, name))) {
 505                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 506                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 507                 }
 508
 509                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 510                         return bus_send_error_reply(m, connection, message, &error, r);
 511
 512                 if (!(reply = dbus_message_new_method_return(message)))
 513                         goto oom;
 514
 515         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 516                 uint32_t id;
 517                 Job *j;
 518
 519                 if (!dbus_message_get_args(
 520                                     message,
 521                                     &error,
 522                                     DBUS_TYPE_UINT32, &id,
 523                                     DBUS_TYPE_INVALID))
 524                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 525
 526                 if (!(j = manager_get_job(m, id))) {
 527                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 528                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 529                 }
 530
 531                 if (!(reply = dbus_message_new_method_return(message)))
 532                         goto oom;
 533
 534                 if (!(path = job_dbus_path(j)))
 535                         goto oom;
 536
 537                 if (!dbus_message_append_args(
 538                                     reply,
 539                                     DBUS_TYPE_OBJECT_PATH, &path,
 540                                     DBUS_TYPE_INVALID))
 541                         goto oom;
 542
 543         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 544
 545                 manager_clear_jobs(m);
 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", "ResetFailed")) {
 551
 552                 manager_reset_failed(m);
 553
 554                 if (!(reply = dbus_message_new_method_return(message)))
 555                         goto oom;
 556
 557         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 558                 const char *name;
 559                 Unit *u;
 560
 561                 if (!dbus_message_get_args(
 562                                     message,
 563                                     &error,
 564                                     DBUS_TYPE_STRING, &name,
 565                                     DBUS_TYPE_INVALID))
 566                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 567
 568                 if (!(u = manager_get_unit(m, name))) {
 569                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 570                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 571                 }
 572
 573                 unit_reset_failed(u);
 574
 575                 if (!(reply = dbus_message_new_method_return(message)))
 576                         goto oom;
 577
 578         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 579                 DBusMessageIter iter, sub;
 580                 Iterator i;
 581                 Unit *u;
 582                 const char *k;
 583
 584                 if (!(reply = dbus_message_new_method_return(message)))
 585                         goto oom;
 586
 587                 dbus_message_iter_init_append(reply, &iter);
 588
 589                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 590                         goto oom;
 591
 592                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 593                         char *u_path, *j_path;
 594                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 595                         DBusMessageIter sub2;
 596                         uint32_t job_id;
 597                         Unit *f;
 598
 599                         if (k != u->meta.id)
 600                                 continue;
 601
 602                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 603                                 goto oom;
 604
 605                         description = unit_description(u);
 606                         load_state = unit_load_state_to_string(u->meta.load_state);
 607                         active_state = unit_active_state_to_string(unit_active_state(u));
 608                         sub_state = unit_sub_state_to_string(u);
 609
 610                         f = unit_following(u);
 611                         following = f ? f->meta.id : "";
 612
 613                         if (!(u_path = unit_dbus_path(u)))
 614                                 goto oom;
 615
 616                         if (u->meta.job) {
 617                                 job_id = (uint32_t) u->meta.job->id;
 618
 619                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 620                                         free(u_path);
 621                                         goto oom;
 622                                 }
 623
 624                                 sjob_type = job_type_to_string(u->meta.job->type);
 625                         } else {
 626                                 job_id = 0;
 627                                 j_path = u_path;
 628                                 sjob_type = "";
 629                         }
 630
 631                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 632                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 633                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 634                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 635                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 636                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 637                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 638                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 639                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 640                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 641                                 free(u_path);
 642                                 if (u->meta.job)
 643                                         free(j_path);
 644                                 goto oom;
 645                         }
 646
 647                         free(u_path);
 648                         if (u->meta.job)
 649                                 free(j_path);
 650
 651                         if (!dbus_message_iter_close_container(&sub, &sub2))
 652                                 goto oom;
 653                 }
 654
 655                 if (!dbus_message_iter_close_container(&iter, &sub))
 656                         goto oom;
 657
 658         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 659                 DBusMessageIter iter, sub;
 660                 Iterator i;
 661                 Job *j;
 662
 663                 if (!(reply = dbus_message_new_method_return(message)))
 664                         goto oom;
 665
 666                 dbus_message_iter_init_append(reply, &iter);
 667
 668                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 669                         goto oom;
 670
 671                 HASHMAP_FOREACH(j, m->jobs, i) {
 672                         char *u_path, *j_path;
 673                         const char *state, *type;
 674                         uint32_t id;
 675                         DBusMessageIter sub2;
 676
 677                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 678                                 goto oom;
 679
 680                         id = (uint32_t) j->id;
 681                         state = job_state_to_string(j->state);
 682                         type = job_type_to_string(j->type);
 683
 684                         if (!(j_path = job_dbus_path(j)))
 685                                 goto oom;
 686
 687                         if (!(u_path = unit_dbus_path(j->unit))) {
 688                                 free(j_path);
 689                                 goto oom;
 690                         }
 691
 692                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 693                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 694                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 695                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 696                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 697                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 698                                 free(j_path);
 699                                 free(u_path);
 700                                 goto oom;
 701                         }
 702
 703                         free(j_path);
 704                         free(u_path);
 705
 706                         if (!dbus_message_iter_close_container(&sub, &sub2))
 707                                 goto oom;
 708                 }
 709
 710                 if (!dbus_message_iter_close_container(&iter, &sub))
 711                         goto oom;
 712
 713         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 714                 char *client;
 715                 Set *s;
 716
 717                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 718                         if (!(s = set_new(string_hash_func, string_compare_func)))
 719                                 goto oom;
 720
 721                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 722                                 set_free(s);
 723                                 goto oom;
 724                         }
 725                 }
 726
 727                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 728                         goto oom;
 729
 730                 if ((r = set_put(s, client)) < 0) {
 731                         free(client);
 732                         return bus_send_error_reply(m, connection, message, NULL, r);
 733                 }
 734
 735                 if (!(reply = dbus_message_new_method_return(message)))
 736                         goto oom;
 737
 738         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 739                 char *client;
 740
 741                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 742                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 743                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 744                 }
 745
 746                 free(client);
 747
 748                 if (!(reply = dbus_message_new_method_return(message)))
 749                         goto oom;
 750
 751         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 752                 FILE *f;
 753                 char *dump = NULL;
 754                 size_t size;
 755
 756                 if (!(reply = dbus_message_new_method_return(message)))
 757                         goto oom;
 758
 759                 if (!(f = open_memstream(&dump, &size)))
 760                         goto oom;
 761
 762                 manager_dump_units(m, f, NULL);
 763                 manager_dump_jobs(m, f, NULL);
 764
 765                 if (ferror(f)) {
 766                         fclose(f);
 767                         free(dump);
 768                         goto oom;
 769                 }
 770
 771                 fclose(f);
 772
 773                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 774                         free(dump);
 775                         goto oom;
 776                 }
 777
 778                 free(dump);
 779         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 780                 const char *name;
 781                 dbus_bool_t cleanup;
 782                 Snapshot *s;
 783
 784                 if (!dbus_message_get_args(
 785                                     message,
 786                                     &error,
 787                                     DBUS_TYPE_STRING, &name,
 788                                     DBUS_TYPE_BOOLEAN, &cleanup,
 789                                     DBUS_TYPE_INVALID))
 790                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 791
 792                 if (name && name[0] == 0)
 793                         name = NULL;
 794
 795                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 796                         return bus_send_error_reply(m, connection, message, &error, r);
 797
 798                 if (!(reply = dbus_message_new_method_return(message)))
 799                         goto oom;
 800
 801                 if (!(path = unit_dbus_path(UNIT(s))))
 802                         goto oom;
 803
 804                 if (!dbus_message_append_args(
 805                                     reply,
 806                                     DBUS_TYPE_OBJECT_PATH, &path,
 807                                     DBUS_TYPE_INVALID))
 808                         goto oom;
 809
 810         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 811                 char *introspection = NULL;
 812                 FILE *f;
 813                 Iterator i;
 814                 Unit *u;
 815                 Job *j;
 816                 const char *k;
 817                 size_t size;
 818
 819                 if (!(reply = dbus_message_new_method_return(message)))
 820                         goto oom;
 821
 822                 /* We roll our own introspection code here, instead of
 823                  * relying on bus_default_message_handler() because we
 824                  * need to generate our introspection string
 825                  * dynamically. */
 826
 827                 if (!(f = open_memstream(&introspection, &size)))
 828                         goto oom;
 829
 830                 fputs(INTROSPECTION_BEGIN, f);
 831
 832                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 833                         char *p;
 834
 835                         if (k != u->meta.id)
 836                                 continue;
 837
 838                         if (!(p = bus_path_escape(k))) {
 839                                 fclose(f);
 840                                 free(introspection);
 841                                 goto oom;
 842                         }
 843
 844                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 845                         free(p);
 846                 }
 847
 848                 HASHMAP_FOREACH(j, m->jobs, i)
 849                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 850
 851                 fputs(INTROSPECTION_END, f);
 852
 853                 if (ferror(f)) {
 854                         fclose(f);
 855                         free(introspection);
 856                         goto oom;
 857                 }
 858
 859                 fclose(f);
 860
 861                 if (!introspection)
 862                         goto oom;
 863
 864                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 865                         free(introspection);
 866                         goto oom;
 867                 }
 868
 869                 free(introspection);
 870
 871         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 872
 873                 assert(!m->queued_message);
 874
 875                 /* Instead of sending the reply back right away, we
 876                  * just remember that we need to and then send it
 877                  * after the reload is finished. That way the caller
 878                  * knows when the reload finished. */
 879
 880                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 881                         goto oom;
 882
 883                 m->queued_message_connection = connection;
 884                 m->exit_code = MANAGER_RELOAD;
 885
 886         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 887
 888                 if (!(reply = dbus_message_new_method_return(message)))
 889                         goto oom;
 890
 891                 m->exit_code = MANAGER_REEXECUTE;
 892
 893         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 894
 895                 if (m->running_as == MANAGER_SYSTEM) {
 896                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
 897                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 898                 }
 899
 900                 if (!(reply = dbus_message_new_method_return(message)))
 901                         goto oom;
 902
 903                 m->exit_code = MANAGER_EXIT;
 904
 905         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 906
 907                 if (m->running_as != MANAGER_SYSTEM) {
 908                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
 909                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 910                 }
 911
 912                 if (!(reply = dbus_message_new_method_return(message)))
 913                         goto oom;
 914
 915                 m->exit_code = MANAGER_REBOOT;
 916
 917         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 918
 919                 if (m->running_as != MANAGER_SYSTEM) {
 920                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
 921                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 922                 }
 923
 924                 if (!(reply = dbus_message_new_method_return(message)))
 925                         goto oom;
 926
 927                 m->exit_code = MANAGER_POWEROFF;
 928
 929         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 930
 931                 if (m->running_as != MANAGER_SYSTEM) {
 932                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 933                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 934                 }
 935
 936                 if (!(reply = dbus_message_new_method_return(message)))
 937                         goto oom;
 938
 939                 m->exit_code = MANAGER_HALT;
 940
 941         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
 942
 943                 if (m->running_as != MANAGER_SYSTEM) {
 944                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
 945                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 946                 }
 947
 948                 if (!(reply = dbus_message_new_method_return(message)))
 949                         goto oom;
 950
 951                 m->exit_code = MANAGER_KEXEC;
 952
 953         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 954                 char **l = NULL, **e = NULL;
 955
 956                 if ((r = bus_parse_strv(message, &l)) < 0) {
 957                         if (r == -ENOMEM)
 958                                 goto oom;
 959
 960                         return bus_send_error_reply(m, connection, message, NULL, r);
 961                 }
 962
 963                 e = strv_env_merge(2, m->environment, l);
 964                 strv_free(l);
 965
 966                 if (!e)
 967                         goto oom;
 968
 969                 if (!(reply = dbus_message_new_method_return(message))) {
 970                         strv_free(e);
 971                         goto oom;
 972                 }
 973
 974                 strv_free(m->environment);
 975                 m->environment = e;
 976
 977         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
 978                 char **l = NULL, **e = NULL;
 979
 980                 if ((r = bus_parse_strv(message, &l)) < 0) {
 981                         if (r == -ENOMEM)
 982                                 goto oom;
 983
 984                         return bus_send_error_reply(m, connection, message, NULL, r);
 985                 }
 986
 987                 e = strv_env_delete(m->environment, 1, l);
 988                 strv_free(l);
 989
 990                 if (!e)
 991                         goto oom;
 992
 993                 if (!(reply = dbus_message_new_method_return(message)))
 994                         goto oom;
 995
 996                 strv_free(m->environment);
 997                 m->environment = e;
 998
 999         } else
1000                 return bus_default_message_handler(m, connection, message, NULL, properties);
1001
1002         if (job_type != _JOB_TYPE_INVALID) {
1003                 const char *name, *smode, *old_name = NULL;
1004                 JobMode mode;
1005                 Job *j;
1006                 Unit *u;
1007                 bool b;
1008
1009                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1010                         b = dbus_message_get_args(
1011                                         message,
1012                                         &error,
1013                                         DBUS_TYPE_STRING, &old_name,
1014                                         DBUS_TYPE_STRING, &name,
1015                                         DBUS_TYPE_STRING, &smode,
1016                                         DBUS_TYPE_INVALID);
1017                 else
1018                         b = dbus_message_get_args(
1019                                         message,
1020                                         &error,
1021                                         DBUS_TYPE_STRING, &name,
1022                                         DBUS_TYPE_STRING, &smode,
1023                                         DBUS_TYPE_INVALID);
1024
1025                 if (!b)
1026                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1027
1028                 if (old_name)
1029                         if (!(u = manager_get_unit(m, old_name)) ||
1030                             !u->meta.job ||
1031                             u->meta.job->type != JOB_START) {
1032                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1033                                 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
1034                         }
1035
1036
1037                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1038                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1039                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1040                 }
1041
1042                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1043                         return bus_send_error_reply(m, connection, message, &error, r);
1044
1045                 if (reload_if_possible && unit_can_reload(u)) {
1046                         if (job_type == JOB_RESTART)
1047                                 job_type = JOB_RELOAD_OR_START;
1048                         else if (job_type == JOB_TRY_RESTART)
1049                                 job_type = JOB_RELOAD;
1050                 }
1051
1052                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1053                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1054                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1055                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1056                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1057                         return bus_send_error_reply(m, connection, message, &error, -EPERM);
1058                 }
1059
1060                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1061                         return bus_send_error_reply(m, connection, message, &error, r);
1062
1063                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1064                         goto oom;
1065
1066                 j->bus = connection;
1067
1068                 if (!(reply = dbus_message_new_method_return(message)))
1069                         goto oom;
1070
1071                 if (!(path = job_dbus_path(j)))
1072                         goto oom;
1073
1074                 if (!dbus_message_append_args(
1075                                     reply,
1076                                     DBUS_TYPE_OBJECT_PATH, &path,
1077                                     DBUS_TYPE_INVALID))
1078                         goto oom;
1079         }
1080
1081         free(path);
1082
1083         if (reply) {
1084                 if (!dbus_connection_send(connection, reply, NULL))
1085                         goto oom;
1086
1087                 dbus_message_unref(reply);
1088         }
1089
1090         return DBUS_HANDLER_RESULT_HANDLED;
1091
1092 oom:
1093         free(path);
1094
1095         if (reply)
1096                 dbus_message_unref(reply);
1097
1098         dbus_error_free(&error);
1099
1100         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1101 }
1102
1103 const DBusObjectPathVTable bus_manager_vtable = {
1104         .message_function = bus_manager_message_handler
1105 };