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=\"readwrite\"/>\n"  \
 160         "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\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_set_log_target(Manager *m, DBusMessageIter *i, const char *property) {
 256         const char *t;
 257
 258         assert(m);
 259         assert(i);
 260         assert(property);
 261
 262         dbus_message_iter_get_basic(i, &t);
 263
 264         return log_set_target_from_string(t);
 265 }
 266
 267 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 268         const char *t;
 269
 270         assert(m);
 271         assert(i);
 272         assert(property);
 273
 274         t = log_level_to_string(log_get_max_level());
 275
 276         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 277                 return -ENOMEM;
 278
 279         return 0;
 280 }
 281
 282 static int bus_manager_set_log_level(Manager *m, DBusMessageIter *i, const char *property) {
 283         const char *t;
 284
 285         assert(m);
 286         assert(i);
 287         assert(property);
 288
 289         dbus_message_iter_get_basic(i, &t);
 290
 291         return log_set_max_level_from_string(t);
 292 }
 293
 294 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 295         uint32_t u;
 296
 297         assert(m);
 298         assert(i);
 299         assert(property);
 300
 301         u = hashmap_size(m->units);
 302
 303         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 304                 return -ENOMEM;
 305
 306         return 0;
 307 }
 308
 309 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 310         uint32_t u;
 311
 312         assert(m);
 313         assert(i);
 314         assert(property);
 315
 316         u = hashmap_size(m->jobs);
 317
 318         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 319                 return -ENOMEM;
 320
 321         return 0;
 322 }
 323
 324 static int bus_manager_append_progress(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 325         double d;
 326
 327         assert(m);
 328         assert(i);
 329         assert(property);
 330
 331         if (dual_timestamp_is_set(&m->finish_timestamp))
 332                 d = 1.0;
 333         else
 334                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 335
 336         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 337                 return -ENOMEM;
 338
 339         return 0;
 340 }
 341
 342 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 343         const char *s;
 344
 345         assert(m);
 346
 347         if ((s = dbus_message_get_sender(m)))
 348                 return s;
 349
 350         /* When the message came in from a direct connection the
 351          * message will have no sender. We fix that here. */
 352
 353         return ":no-sender";
 354 }
 355
 356 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 357         Manager *m = data;
 358
 359         const BusProperty properties[] = {
 360                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 361                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 362                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 363                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 364                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 365                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 366                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 367                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 368                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  NULL,               bus_manager_set_log_level},
 369                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  NULL,               bus_manager_set_log_target},
 370                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  NULL               },
 371                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  NULL               },
 372                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 373                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 374                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  NULL               },
 375                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 376                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 377                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 378                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 379                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 380                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 381                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 382                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 383                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 384                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 385                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 386 #ifdef HAVE_SYSV_COMPAT
 387                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 388                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 389                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 390 #endif
 391                 { NULL, NULL, NULL, NULL, NULL }
 392         };
 393
 394         int r;
 395         DBusError error;
 396         DBusMessage *reply = NULL;
 397         char * path = NULL;
 398         JobType job_type = _JOB_TYPE_INVALID;
 399         bool reload_if_possible = false;
 400
 401         assert(connection);
 402         assert(message);
 403         assert(m);
 404
 405         dbus_error_init(&error);
 406
 407         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 408                 const char *name;
 409                 Unit *u;
 410
 411                 if (!dbus_message_get_args(
 412                                     message,
 413                                     &error,
 414                                     DBUS_TYPE_STRING, &name,
 415                                     DBUS_TYPE_INVALID))
 416                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 417
 418                 if (!(u = manager_get_unit(m, name))) {
 419                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 420                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 421                 }
 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         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 435                 Unit *u;
 436                 uint32_t pid;
 437
 438                 if (!dbus_message_get_args(
 439                                     message,
 440                                     &error,
 441                                     DBUS_TYPE_UINT32, &pid,
 442                                     DBUS_TYPE_INVALID))
 443                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 444
 445                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 446                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 447                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 448                 }
 449
 450                 if (!(reply = dbus_message_new_method_return(message)))
 451                         goto oom;
 452
 453                 if (!(path = unit_dbus_path(u)))
 454                         goto oom;
 455
 456                 if (!dbus_message_append_args(
 457                                     reply,
 458                                     DBUS_TYPE_OBJECT_PATH, &path,
 459                                     DBUS_TYPE_INVALID))
 460                         goto oom;
 461         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 462                 const char *name;
 463                 Unit *u;
 464
 465                 if (!dbus_message_get_args(
 466                                     message,
 467                                     &error,
 468                                     DBUS_TYPE_STRING, &name,
 469                                     DBUS_TYPE_INVALID))
 470                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 471
 472                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 473                         return bus_send_error_reply(m, connection, message, &error, r);
 474
 475                 if (!(reply = dbus_message_new_method_return(message)))
 476                         goto oom;
 477
 478                 if (!(path = unit_dbus_path(u)))
 479                         goto oom;
 480
 481                 if (!dbus_message_append_args(
 482                                     reply,
 483                                     DBUS_TYPE_OBJECT_PATH, &path,
 484                                     DBUS_TYPE_INVALID))
 485                         goto oom;
 486
 487         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 488                 job_type = JOB_START;
 489         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 490                 job_type = JOB_START;
 491         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 492                 job_type = JOB_STOP;
 493         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 494                 job_type = JOB_RELOAD;
 495         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 496                 job_type = JOB_RESTART;
 497         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 498                 job_type = JOB_TRY_RESTART;
 499         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 500                 reload_if_possible = true;
 501                 job_type = JOB_RESTART;
 502         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 503                 reload_if_possible = true;
 504                 job_type = JOB_TRY_RESTART;
 505         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 506                 const char *name, *swho, *smode;
 507                 int32_t signo;
 508                 Unit *u;
 509                 KillMode mode;
 510                 KillWho who;
 511
 512                 if (!dbus_message_get_args(
 513                                     message,
 514                                     &error,
 515                                     DBUS_TYPE_STRING, &name,
 516                                     DBUS_TYPE_STRING, &swho,
 517                                     DBUS_TYPE_STRING, &smode,
 518                                     DBUS_TYPE_INT32, &signo,
 519                                     DBUS_TYPE_INVALID))
 520                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 521
 522                 if ((mode = kill_mode_from_string(smode)) < 0 ||
 523                     (who = kill_who_from_string(swho)) < 0 ||
 524                     signo <= 0 ||
 525                     signo >= _NSIG)
 526                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 527
 528                 if (!(u = manager_get_unit(m, name))) {
 529                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 530                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 531                 }
 532
 533                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 534                         return bus_send_error_reply(m, connection, message, &error, r);
 535
 536                 if (!(reply = dbus_message_new_method_return(message)))
 537                         goto oom;
 538
 539         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 540                 uint32_t id;
 541                 Job *j;
 542
 543                 if (!dbus_message_get_args(
 544                                     message,
 545                                     &error,
 546                                     DBUS_TYPE_UINT32, &id,
 547                                     DBUS_TYPE_INVALID))
 548                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 549
 550                 if (!(j = manager_get_job(m, id))) {
 551                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 552                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 553                 }
 554
 555                 if (!(reply = dbus_message_new_method_return(message)))
 556                         goto oom;
 557
 558                 if (!(path = job_dbus_path(j)))
 559                         goto oom;
 560
 561                 if (!dbus_message_append_args(
 562                                     reply,
 563                                     DBUS_TYPE_OBJECT_PATH, &path,
 564                                     DBUS_TYPE_INVALID))
 565                         goto oom;
 566
 567         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 568
 569                 manager_clear_jobs(m);
 570
 571                 if (!(reply = dbus_message_new_method_return(message)))
 572                         goto oom;
 573
 574         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 575
 576                 manager_reset_failed(m);
 577
 578                 if (!(reply = dbus_message_new_method_return(message)))
 579                         goto oom;
 580
 581         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 582                 const char *name;
 583                 Unit *u;
 584
 585                 if (!dbus_message_get_args(
 586                                     message,
 587                                     &error,
 588                                     DBUS_TYPE_STRING, &name,
 589                                     DBUS_TYPE_INVALID))
 590                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 591
 592                 if (!(u = manager_get_unit(m, name))) {
 593                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 594                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 595                 }
 596
 597                 unit_reset_failed(u);
 598
 599                 if (!(reply = dbus_message_new_method_return(message)))
 600                         goto oom;
 601
 602         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 603                 DBusMessageIter iter, sub;
 604                 Iterator i;
 605                 Unit *u;
 606                 const char *k;
 607
 608                 if (!(reply = dbus_message_new_method_return(message)))
 609                         goto oom;
 610
 611                 dbus_message_iter_init_append(reply, &iter);
 612
 613                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 614                         goto oom;
 615
 616                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 617                         char *u_path, *j_path;
 618                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 619                         DBusMessageIter sub2;
 620                         uint32_t job_id;
 621                         Unit *f;
 622
 623                         if (k != u->meta.id)
 624                                 continue;
 625
 626                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 627                                 goto oom;
 628
 629                         description = unit_description(u);
 630                         load_state = unit_load_state_to_string(u->meta.load_state);
 631                         active_state = unit_active_state_to_string(unit_active_state(u));
 632                         sub_state = unit_sub_state_to_string(u);
 633
 634                         f = unit_following(u);
 635                         following = f ? f->meta.id : "";
 636
 637                         if (!(u_path = unit_dbus_path(u)))
 638                                 goto oom;
 639
 640                         if (u->meta.job) {
 641                                 job_id = (uint32_t) u->meta.job->id;
 642
 643                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 644                                         free(u_path);
 645                                         goto oom;
 646                                 }
 647
 648                                 sjob_type = job_type_to_string(u->meta.job->type);
 649                         } else {
 650                                 job_id = 0;
 651                                 j_path = u_path;
 652                                 sjob_type = "";
 653                         }
 654
 655                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 656                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 657                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 658                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 659                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 660                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 661                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 662                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 663                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 664                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 665                                 free(u_path);
 666                                 if (u->meta.job)
 667                                         free(j_path);
 668                                 goto oom;
 669                         }
 670
 671                         free(u_path);
 672                         if (u->meta.job)
 673                                 free(j_path);
 674
 675                         if (!dbus_message_iter_close_container(&sub, &sub2))
 676                                 goto oom;
 677                 }
 678
 679                 if (!dbus_message_iter_close_container(&iter, &sub))
 680                         goto oom;
 681
 682         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 683                 DBusMessageIter iter, sub;
 684                 Iterator i;
 685                 Job *j;
 686
 687                 if (!(reply = dbus_message_new_method_return(message)))
 688                         goto oom;
 689
 690                 dbus_message_iter_init_append(reply, &iter);
 691
 692                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 693                         goto oom;
 694
 695                 HASHMAP_FOREACH(j, m->jobs, i) {
 696                         char *u_path, *j_path;
 697                         const char *state, *type;
 698                         uint32_t id;
 699                         DBusMessageIter sub2;
 700
 701                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 702                                 goto oom;
 703
 704                         id = (uint32_t) j->id;
 705                         state = job_state_to_string(j->state);
 706                         type = job_type_to_string(j->type);
 707
 708                         if (!(j_path = job_dbus_path(j)))
 709                                 goto oom;
 710
 711                         if (!(u_path = unit_dbus_path(j->unit))) {
 712                                 free(j_path);
 713                                 goto oom;
 714                         }
 715
 716                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 717                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 718                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 719                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 720                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 721                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 722                                 free(j_path);
 723                                 free(u_path);
 724                                 goto oom;
 725                         }
 726
 727                         free(j_path);
 728                         free(u_path);
 729
 730                         if (!dbus_message_iter_close_container(&sub, &sub2))
 731                                 goto oom;
 732                 }
 733
 734                 if (!dbus_message_iter_close_container(&iter, &sub))
 735                         goto oom;
 736
 737         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 738                 char *client;
 739                 Set *s;
 740
 741                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 742                         if (!(s = set_new(string_hash_func, string_compare_func)))
 743                                 goto oom;
 744
 745                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 746                                 set_free(s);
 747                                 goto oom;
 748                         }
 749                 }
 750
 751                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 752                         goto oom;
 753
 754                 if ((r = set_put(s, client)) < 0) {
 755                         free(client);
 756                         return bus_send_error_reply(m, connection, message, NULL, r);
 757                 }
 758
 759                 if (!(reply = dbus_message_new_method_return(message)))
 760                         goto oom;
 761
 762         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 763                 char *client;
 764
 765                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 766                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 767                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 768                 }
 769
 770                 free(client);
 771
 772                 if (!(reply = dbus_message_new_method_return(message)))
 773                         goto oom;
 774
 775         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 776                 FILE *f;
 777                 char *dump = NULL;
 778                 size_t size;
 779
 780                 if (!(reply = dbus_message_new_method_return(message)))
 781                         goto oom;
 782
 783                 if (!(f = open_memstream(&dump, &size)))
 784                         goto oom;
 785
 786                 manager_dump_units(m, f, NULL);
 787                 manager_dump_jobs(m, f, NULL);
 788
 789                 if (ferror(f)) {
 790                         fclose(f);
 791                         free(dump);
 792                         goto oom;
 793                 }
 794
 795                 fclose(f);
 796
 797                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 798                         free(dump);
 799                         goto oom;
 800                 }
 801
 802                 free(dump);
 803         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 804                 const char *name;
 805                 dbus_bool_t cleanup;
 806                 Snapshot *s;
 807
 808                 if (!dbus_message_get_args(
 809                                     message,
 810                                     &error,
 811                                     DBUS_TYPE_STRING, &name,
 812                                     DBUS_TYPE_BOOLEAN, &cleanup,
 813                                     DBUS_TYPE_INVALID))
 814                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 815
 816                 if (name && name[0] == 0)
 817                         name = NULL;
 818
 819                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 820                         return bus_send_error_reply(m, connection, message, &error, r);
 821
 822                 if (!(reply = dbus_message_new_method_return(message)))
 823                         goto oom;
 824
 825                 if (!(path = unit_dbus_path(UNIT(s))))
 826                         goto oom;
 827
 828                 if (!dbus_message_append_args(
 829                                     reply,
 830                                     DBUS_TYPE_OBJECT_PATH, &path,
 831                                     DBUS_TYPE_INVALID))
 832                         goto oom;
 833
 834         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 835                 char *introspection = NULL;
 836                 FILE *f;
 837                 Iterator i;
 838                 Unit *u;
 839                 Job *j;
 840                 const char *k;
 841                 size_t size;
 842
 843                 if (!(reply = dbus_message_new_method_return(message)))
 844                         goto oom;
 845
 846                 /* We roll our own introspection code here, instead of
 847                  * relying on bus_default_message_handler() because we
 848                  * need to generate our introspection string
 849                  * dynamically. */
 850
 851                 if (!(f = open_memstream(&introspection, &size)))
 852                         goto oom;
 853
 854                 fputs(INTROSPECTION_BEGIN, f);
 855
 856                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 857                         char *p;
 858
 859                         if (k != u->meta.id)
 860                                 continue;
 861
 862                         if (!(p = bus_path_escape(k))) {
 863                                 fclose(f);
 864                                 free(introspection);
 865                                 goto oom;
 866                         }
 867
 868                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 869                         free(p);
 870                 }
 871
 872                 HASHMAP_FOREACH(j, m->jobs, i)
 873                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 874
 875                 fputs(INTROSPECTION_END, f);
 876
 877                 if (ferror(f)) {
 878                         fclose(f);
 879                         free(introspection);
 880                         goto oom;
 881                 }
 882
 883                 fclose(f);
 884
 885                 if (!introspection)
 886                         goto oom;
 887
 888                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 889                         free(introspection);
 890                         goto oom;
 891                 }
 892
 893                 free(introspection);
 894
 895         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 896
 897                 assert(!m->queued_message);
 898
 899                 /* Instead of sending the reply back right away, we
 900                  * just remember that we need to and then send it
 901                  * after the reload is finished. That way the caller
 902                  * knows when the reload finished. */
 903
 904                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 905                         goto oom;
 906
 907                 m->queued_message_connection = connection;
 908                 m->exit_code = MANAGER_RELOAD;
 909
 910         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 911
 912                 if (!(reply = dbus_message_new_method_return(message)))
 913                         goto oom;
 914
 915                 m->exit_code = MANAGER_REEXECUTE;
 916
 917         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 918
 919                 if (m->running_as == MANAGER_SYSTEM) {
 920                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service 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_EXIT;
 928
 929         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 930
 931                 if (m->running_as != MANAGER_SYSTEM) {
 932                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot 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_REBOOT;
 940
 941         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 942
 943                 if (m->running_as != MANAGER_SYSTEM) {
 944                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off 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_POWEROFF;
 952
 953         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 954
 955                 if (m->running_as != MANAGER_SYSTEM) {
 956                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 957                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 958                 }
 959
 960                 if (!(reply = dbus_message_new_method_return(message)))
 961                         goto oom;
 962
 963                 m->exit_code = MANAGER_HALT;
 964
 965         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
 966
 967                 if (m->running_as != MANAGER_SYSTEM) {
 968                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
 969                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 970                 }
 971
 972                 if (!(reply = dbus_message_new_method_return(message)))
 973                         goto oom;
 974
 975                 m->exit_code = MANAGER_KEXEC;
 976
 977         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 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_merge(2, m->environment, l);
 988                 strv_free(l);
 989
 990                 if (!e)
 991                         goto oom;
 992
 993                 if (!(reply = dbus_message_new_method_return(message))) {
 994                         strv_free(e);
 995                         goto oom;
 996                 }
 997
 998                 strv_free(m->environment);
 999                 m->environment = e;
1000
1001         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1002                 char **l = NULL, **e = NULL;
1003
1004                 if ((r = bus_parse_strv(message, &l)) < 0) {
1005                         if (r == -ENOMEM)
1006                                 goto oom;
1007
1008                         return bus_send_error_reply(m, connection, message, NULL, r);
1009                 }
1010
1011                 e = strv_env_delete(m->environment, 1, l);
1012                 strv_free(l);
1013
1014                 if (!e)
1015                         goto oom;
1016
1017                 if (!(reply = dbus_message_new_method_return(message)))
1018                         goto oom;
1019
1020                 strv_free(m->environment);
1021                 m->environment = e;
1022
1023         } else
1024                 return bus_default_message_handler(m, connection, message, NULL, properties);
1025
1026         if (job_type != _JOB_TYPE_INVALID) {
1027                 const char *name, *smode, *old_name = NULL;
1028                 JobMode mode;
1029                 Job *j;
1030                 Unit *u;
1031                 bool b;
1032
1033                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1034                         b = dbus_message_get_args(
1035                                         message,
1036                                         &error,
1037                                         DBUS_TYPE_STRING, &old_name,
1038                                         DBUS_TYPE_STRING, &name,
1039                                         DBUS_TYPE_STRING, &smode,
1040                                         DBUS_TYPE_INVALID);
1041                 else
1042                         b = dbus_message_get_args(
1043                                         message,
1044                                         &error,
1045                                         DBUS_TYPE_STRING, &name,
1046                                         DBUS_TYPE_STRING, &smode,
1047                                         DBUS_TYPE_INVALID);
1048
1049                 if (!b)
1050                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1051
1052                 if (old_name)
1053                         if (!(u = manager_get_unit(m, old_name)) ||
1054                             !u->meta.job ||
1055                             u->meta.job->type != JOB_START) {
1056                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1057                                 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
1058                         }
1059
1060
1061                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1062                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1063                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1064                 }
1065
1066                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1067                         return bus_send_error_reply(m, connection, message, &error, r);
1068
1069                 if (reload_if_possible && unit_can_reload(u)) {
1070                         if (job_type == JOB_RESTART)
1071                                 job_type = JOB_RELOAD_OR_START;
1072                         else if (job_type == JOB_TRY_RESTART)
1073                                 job_type = JOB_RELOAD;
1074                 }
1075
1076                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1077                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1078                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1079                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1080                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1081                         return bus_send_error_reply(m, connection, message, &error, -EPERM);
1082                 }
1083
1084                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1085                         return bus_send_error_reply(m, connection, message, &error, r);
1086
1087                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1088                         goto oom;
1089
1090                 j->bus = connection;
1091
1092                 if (!(reply = dbus_message_new_method_return(message)))
1093                         goto oom;
1094
1095                 if (!(path = job_dbus_path(j)))
1096                         goto oom;
1097
1098                 if (!dbus_message_append_args(
1099                                     reply,
1100                                     DBUS_TYPE_OBJECT_PATH, &path,
1101                                     DBUS_TYPE_INVALID))
1102                         goto oom;
1103         }
1104
1105         free(path);
1106
1107         if (reply) {
1108                 if (!dbus_connection_send(connection, reply, NULL))
1109                         goto oom;
1110
1111                 dbus_message_unref(reply);
1112         }
1113
1114         return DBUS_HANDLER_RESULT_HANDLED;
1115
1116 oom:
1117         free(path);
1118
1119         if (reply)
1120                 dbus_message_unref(reply);
1121
1122         dbus_error_free(&error);
1123
1124         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1125 }
1126
1127 const DBusObjectPathVTable bus_manager_vtable = {
1128         .message_function = bus_manager_message_handler
1129 };