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 #include <unistd.h>
  24
  25 #include "dbus.h"
  26 #include "log.h"
  27 #include "dbus-manager.h"
  28 #include "strv.h"
  29 #include "bus-errors.h"
  30 #include "build.h"
  31 #include "dbus-common.h"
  32
  33 #define BUS_MANAGER_INTERFACE_BEGIN                                     \
  34         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
  35
  36 #define BUS_MANAGER_INTERFACE_METHODS                                   \
  37         "  <method name=\"GetUnit\">\n"                                 \
  38         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  39         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  40         "  </method>\n"                                                 \
  41         "  <method name=\"GetUnitByPID\">\n"                            \
  42         "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
  43         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  44         "  </method>\n"                                                 \
  45         "  <method name=\"LoadUnit\">\n"                                \
  46         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  47         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  48         "  </method>\n"                                                 \
  49         "  <method name=\"StartUnit\">\n"                               \
  50         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  51         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  52         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  53         "  </method>\n"                                                 \
  54         "  <method name=\"StartUnitReplace\">\n"                        \
  55         "   <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n"     \
  56         "   <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n"     \
  57         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  58         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  59         "  </method>\n"                                                 \
  60         "  <method name=\"StopUnit\">\n"                                \
  61         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  62         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  63         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  64         "  </method>\n"                                                 \
  65         "  <method name=\"ReloadUnit\">\n"                              \
  66         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  67         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  68         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  69         "  </method>\n"                                                 \
  70         "  <method name=\"RestartUnit\">\n"                             \
  71         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  72         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  73         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  74         "  </method>\n"                                                 \
  75         "  <method name=\"TryRestartUnit\">\n"                          \
  76         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  77         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  78         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  79         "  </method>\n"                                                 \
  80         "  <method name=\"ReloadOrRestartUnit\">\n"                     \
  81         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  82         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  83         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  84         "  </method>\n"                                                 \
  85         "  <method name=\"ReloadOrTryRestartUnit\">\n"                  \
  86         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  87         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  88         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  89         "  </method>\n"                                                 \
  90         "  <method name=\"KillUnit\">\n"                                \
  91         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  92         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
  93         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  94         "   <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n"       \
  95         "  </method>\n"                                                 \
  96         "  <method name=\"ResetFailedUnit\">\n"                         \
  97         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  98         "  </method>\n"                                                 \
  99         "  <method name=\"GetJob\">\n"                                  \
 100         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
 101         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
 102         "  </method>\n"                                                 \
 103         "  <method name=\"ClearJobs\"/>\n"                              \
 104         "  <method name=\"ResetFailed\"/>\n"                            \
 105         "  <method name=\"ListUnits\">\n"                               \
 106         "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
 107         "  </method>\n"                                                 \
 108         "  <method name=\"ListJobs\">\n"                                \
 109         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
 110         "  </method>\n"                                                 \
 111         "  <method name=\"Subscribe\"/>\n"                              \
 112         "  <method name=\"Unsubscribe\"/>\n"                            \
 113         "  <method name=\"Dump\"/>\n"                                   \
 114         "  <method name=\"CreateSnapshot\">\n"                          \
 115         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
 116         "   <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
 117         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
 118         "  </method>\n"                                                 \
 119         "  <method name=\"Reload\"/>\n"                                 \
 120         "  <method name=\"Reexecute\"/>\n"                              \
 121         "  <method name=\"Exit\"/>\n"                                   \
 122         "  <method name=\"Reboot\"/>\n"                                 \
 123         "  <method name=\"PowerOff\"/>\n"                               \
 124         "  <method name=\"Halt\"/>\n"                                   \
 125         "  <method name=\"KExec\"/>\n"                                  \
 126         "  <method name=\"SetEnvironment\">\n"                          \
 127         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 128         "  </method>\n"                                                 \
 129         "  <method name=\"UnsetEnvironment\">\n"                        \
 130         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 131         "  </method>\n"
 132
 133 #define BUS_MANAGER_INTERFACE_SIGNALS                                   \
 134         "  <signal name=\"UnitNew\">\n"                                 \
 135         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 136         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 137         "  </signal>\n"                                                 \
 138         "  <signal name=\"UnitRemoved\">\n"                             \
 139         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 140         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 141         "  </signal>\n"                                                 \
 142         "  <signal name=\"JobNew\">\n"                                  \
 143         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 144         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 145         "  </signal>\n"                                                 \
 146         "  <signal name=\"JobRemoved\">\n"                              \
 147         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 148         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 149         "   <arg name=\"result\" type=\"s\"/>\n"                        \
 150         "  </signal>"
 151
 152 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 153         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 154         "  <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
 155         "  <property name=\"Features\" type=\"s\" access=\"read\"/>\n"  \
 156         "  <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n"   \
 157         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 158         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 159         "  <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 160         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 161         "  <property name=\"StartupTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 162         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 163         "  <property name=\"FinishTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 164         "  <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n"  \
 165         "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
 166         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 167         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 168         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 169         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 170         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 171         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 172         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 173         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 174         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 175         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 176         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 177         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 178         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 179         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 180         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 181         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 182
 183 #ifdef HAVE_SYSV_COMPAT
 184 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 185         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 186         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 187         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 188 #else
 189 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 190 #endif
 191
 192 #define BUS_MANAGER_INTERFACE_END                                       \
 193         " </interface>\n"
 194
 195 #define BUS_MANAGER_INTERFACE                                           \
 196         BUS_MANAGER_INTERFACE_BEGIN                                     \
 197         BUS_MANAGER_INTERFACE_METHODS                                   \
 198         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 199         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 200         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 201         BUS_MANAGER_INTERFACE_END
 202
 203 #define INTROSPECTION_BEGIN                                             \
 204         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 205         "<node>\n"                                                      \
 206         BUS_MANAGER_INTERFACE                                           \
 207         BUS_PROPERTIES_INTERFACE                                        \
 208         BUS_PEER_INTERFACE                                              \
 209         BUS_INTROSPECTABLE_INTERFACE
 210
 211 #define INTROSPECTION_END                                               \
 212         "</node>\n"
 213
 214 #define INTERFACES_LIST                              \
 215         BUS_GENERIC_INTERFACES_LIST                  \
 216         "org.freedesktop.systemd1.Manager\0"
 217
 218 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 219
 220 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 221 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 222
 223 static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
 224         const char *t;
 225         Manager *m = data;
 226         char buf[LINE_MAX] = "", *e = buf, *p = NULL;
 227
 228         assert(i);
 229         assert(property);
 230         assert(m);
 231
 232         if (m->taint_usr)
 233                 e = stpcpy(e, "usr-separate-fs ");
 234
 235         if (readlink_malloc("/etc/mtab", &p) < 0)
 236                 e = stpcpy(e, "etc-mtab-not-symlink ");
 237         else
 238                 free(p);
 239
 240         if (access("/proc/cgroups", F_OK) < 0)
 241                 e = stpcpy(e, "cgroups-missing ");
 242
 243         t = strstrip(buf);
 244
 245         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 246                 return -ENOMEM;
 247
 248         return 0;
 249 }
 250
 251 static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
 252         const char *t;
 253
 254         assert(i);
 255         assert(property);
 256
 257         t = log_target_to_string(log_get_target());
 258
 259         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 260                 return -ENOMEM;
 261
 262         return 0;
 263 }
 264
 265 static int bus_manager_set_log_target(DBusMessageIter *i, const char *property) {
 266         const char *t;
 267
 268         assert(i);
 269         assert(property);
 270
 271         dbus_message_iter_get_basic(i, &t);
 272
 273         return log_set_target_from_string(t);
 274 }
 275
 276 static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
 277         const char *t;
 278
 279         assert(i);
 280         assert(property);
 281
 282         t = log_level_to_string(log_get_max_level());
 283
 284         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 285                 return -ENOMEM;
 286
 287         return 0;
 288 }
 289
 290 static int bus_manager_set_log_level(DBusMessageIter *i, const char *property) {
 291         const char *t;
 292
 293         assert(i);
 294         assert(property);
 295
 296         dbus_message_iter_get_basic(i, &t);
 297
 298         return log_set_max_level_from_string(t);
 299 }
 300
 301 static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
 302         Manager *m = data;
 303         uint32_t u;
 304
 305         assert(i);
 306         assert(property);
 307         assert(m);
 308
 309         u = hashmap_size(m->units);
 310
 311         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 312                 return -ENOMEM;
 313
 314         return 0;
 315 }
 316
 317 static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
 318         Manager *m = data;
 319         uint32_t u;
 320
 321         assert(i);
 322         assert(property);
 323         assert(m);
 324
 325         u = hashmap_size(m->jobs);
 326
 327         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 328                 return -ENOMEM;
 329
 330         return 0;
 331 }
 332
 333 static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
 334         double d;
 335         Manager *m = data;
 336
 337         assert(i);
 338         assert(property);
 339         assert(m);
 340
 341         if (dual_timestamp_is_set(&m->finish_timestamp))
 342                 d = 1.0;
 343         else
 344                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 345
 346         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 347                 return -ENOMEM;
 348
 349         return 0;
 350 }
 351
 352 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 353         const char *s;
 354
 355         assert(m);
 356
 357         if ((s = dbus_message_get_sender(m)))
 358                 return s;
 359
 360         /* When the message came in from a direct connection the
 361          * message will have no sender. We fix that here. */
 362
 363         return ":no-sender";
 364 }
 365
 366 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 367         Manager *m = data;
 368
 369         const BusProperty properties[] = {
 370                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 371                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 372                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 373                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 374                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 375                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 376                 { "org.freedesktop.systemd1.Manager", "InitRDTimestampMonotonic", bus_property_append_uint64, "t", &m->initrd_timestamp.monotonic },
 377                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 378                 { "org.freedesktop.systemd1.Manager", "StartupTimestampMonotonic", bus_property_append_uint64, "t", &m->startup_timestamp.monotonic },
 379                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 380                 { "org.freedesktop.systemd1.Manager", "FinishTimestampMonotonic", bus_property_append_uint64, "t",&m->finish_timestamp.monotonic },
 381                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  m, bus_manager_set_log_level },
 382                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  m, bus_manager_set_log_target },
 383                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  m                  },
 384                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  m                  },
 385                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 386                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 387                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  m                  },
 388                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 389                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 390                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 391                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 392                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 393                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 394                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 395                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 396                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 397                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 398                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 399 #ifdef HAVE_SYSV_COMPAT
 400                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 401                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 402                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 403 #endif
 404                 { NULL, NULL, NULL, NULL, NULL }
 405         };
 406
 407         int r;
 408         DBusError error;
 409         DBusMessage *reply = NULL;
 410         char * path = NULL;
 411         JobType job_type = _JOB_TYPE_INVALID;
 412         bool reload_if_possible = false;
 413
 414         assert(connection);
 415         assert(message);
 416         assert(m);
 417
 418         dbus_error_init(&error);
 419
 420         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 421                 const char *name;
 422                 Unit *u;
 423
 424                 if (!dbus_message_get_args(
 425                                     message,
 426                                     &error,
 427                                     DBUS_TYPE_STRING, &name,
 428                                     DBUS_TYPE_INVALID))
 429                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 430
 431                 if (!(u = manager_get_unit(m, name))) {
 432                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 433                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 434                 }
 435
 436                 if (!(reply = dbus_message_new_method_return(message)))
 437                         goto oom;
 438
 439                 if (!(path = unit_dbus_path(u)))
 440                         goto oom;
 441
 442                 if (!dbus_message_append_args(
 443                                     reply,
 444                                     DBUS_TYPE_OBJECT_PATH, &path,
 445                                     DBUS_TYPE_INVALID))
 446                         goto oom;
 447         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 448                 Unit *u;
 449                 uint32_t pid;
 450
 451                 if (!dbus_message_get_args(
 452                                     message,
 453                                     &error,
 454                                     DBUS_TYPE_UINT32, &pid,
 455                                     DBUS_TYPE_INVALID))
 456                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 457
 458                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 459                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 460                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 461                 }
 462
 463                 if (!(reply = dbus_message_new_method_return(message)))
 464                         goto oom;
 465
 466                 if (!(path = unit_dbus_path(u)))
 467                         goto oom;
 468
 469                 if (!dbus_message_append_args(
 470                                     reply,
 471                                     DBUS_TYPE_OBJECT_PATH, &path,
 472                                     DBUS_TYPE_INVALID))
 473                         goto oom;
 474         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 475                 const char *name;
 476                 Unit *u;
 477
 478                 if (!dbus_message_get_args(
 479                                     message,
 480                                     &error,
 481                                     DBUS_TYPE_STRING, &name,
 482                                     DBUS_TYPE_INVALID))
 483                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 484
 485                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 486                         return bus_send_error_reply(connection, message, &error, r);
 487
 488                 if (!(reply = dbus_message_new_method_return(message)))
 489                         goto oom;
 490
 491                 if (!(path = unit_dbus_path(u)))
 492                         goto oom;
 493
 494                 if (!dbus_message_append_args(
 495                                     reply,
 496                                     DBUS_TYPE_OBJECT_PATH, &path,
 497                                     DBUS_TYPE_INVALID))
 498                         goto oom;
 499
 500         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 501                 job_type = JOB_START;
 502         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 503                 job_type = JOB_START;
 504         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 505                 job_type = JOB_STOP;
 506         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 507                 job_type = JOB_RELOAD;
 508         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 509                 job_type = JOB_RESTART;
 510         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 511                 job_type = JOB_TRY_RESTART;
 512         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 513                 reload_if_possible = true;
 514                 job_type = JOB_RESTART;
 515         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 516                 reload_if_possible = true;
 517                 job_type = JOB_TRY_RESTART;
 518         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 519                 const char *name, *swho, *smode;
 520                 int32_t signo;
 521                 Unit *u;
 522                 KillMode mode;
 523                 KillWho who;
 524
 525                 if (!dbus_message_get_args(
 526                                     message,
 527                                     &error,
 528                                     DBUS_TYPE_STRING, &name,
 529                                     DBUS_TYPE_STRING, &swho,
 530                                     DBUS_TYPE_STRING, &smode,
 531                                     DBUS_TYPE_INT32, &signo,
 532                                     DBUS_TYPE_INVALID))
 533                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 534
 535                 if ((mode = kill_mode_from_string(smode)) < 0 ||
 536                     (who = kill_who_from_string(swho)) < 0 ||
 537                     signo <= 0 ||
 538                     signo >= _NSIG)
 539                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 540
 541                 if (!(u = manager_get_unit(m, name))) {
 542                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 543                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 544                 }
 545
 546                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 547                         return bus_send_error_reply(connection, message, &error, r);
 548
 549                 if (!(reply = dbus_message_new_method_return(message)))
 550                         goto oom;
 551
 552         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 553                 uint32_t id;
 554                 Job *j;
 555
 556                 if (!dbus_message_get_args(
 557                                     message,
 558                                     &error,
 559                                     DBUS_TYPE_UINT32, &id,
 560                                     DBUS_TYPE_INVALID))
 561                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 562
 563                 if (!(j = manager_get_job(m, id))) {
 564                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 565                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 566                 }
 567
 568                 if (!(reply = dbus_message_new_method_return(message)))
 569                         goto oom;
 570
 571                 if (!(path = job_dbus_path(j)))
 572                         goto oom;
 573
 574                 if (!dbus_message_append_args(
 575                                     reply,
 576                                     DBUS_TYPE_OBJECT_PATH, &path,
 577                                     DBUS_TYPE_INVALID))
 578                         goto oom;
 579
 580         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 581
 582                 manager_clear_jobs(m);
 583
 584                 if (!(reply = dbus_message_new_method_return(message)))
 585                         goto oom;
 586
 587         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 588
 589                 manager_reset_failed(m);
 590
 591                 if (!(reply = dbus_message_new_method_return(message)))
 592                         goto oom;
 593
 594         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 595                 const char *name;
 596                 Unit *u;
 597
 598                 if (!dbus_message_get_args(
 599                                     message,
 600                                     &error,
 601                                     DBUS_TYPE_STRING, &name,
 602                                     DBUS_TYPE_INVALID))
 603                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 604
 605                 if (!(u = manager_get_unit(m, name))) {
 606                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 607                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 608                 }
 609
 610                 unit_reset_failed(u);
 611
 612                 if (!(reply = dbus_message_new_method_return(message)))
 613                         goto oom;
 614
 615         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 616                 DBusMessageIter iter, sub;
 617                 Iterator i;
 618                 Unit *u;
 619                 const char *k;
 620
 621                 if (!(reply = dbus_message_new_method_return(message)))
 622                         goto oom;
 623
 624                 dbus_message_iter_init_append(reply, &iter);
 625
 626                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 627                         goto oom;
 628
 629                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 630                         char *u_path, *j_path;
 631                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 632                         DBusMessageIter sub2;
 633                         uint32_t job_id;
 634                         Unit *f;
 635
 636                         if (k != u->meta.id)
 637                                 continue;
 638
 639                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 640                                 goto oom;
 641
 642                         description = unit_description(u);
 643                         load_state = unit_load_state_to_string(u->meta.load_state);
 644                         active_state = unit_active_state_to_string(unit_active_state(u));
 645                         sub_state = unit_sub_state_to_string(u);
 646
 647                         f = unit_following(u);
 648                         following = f ? f->meta.id : "";
 649
 650                         if (!(u_path = unit_dbus_path(u)))
 651                                 goto oom;
 652
 653                         if (u->meta.job) {
 654                                 job_id = (uint32_t) u->meta.job->id;
 655
 656                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 657                                         free(u_path);
 658                                         goto oom;
 659                                 }
 660
 661                                 sjob_type = job_type_to_string(u->meta.job->type);
 662                         } else {
 663                                 job_id = 0;
 664                                 j_path = u_path;
 665                                 sjob_type = "";
 666                         }
 667
 668                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 669                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 670                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 671                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 672                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 673                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 674                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 675                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 676                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 677                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 678                                 free(u_path);
 679                                 if (u->meta.job)
 680                                         free(j_path);
 681                                 goto oom;
 682                         }
 683
 684                         free(u_path);
 685                         if (u->meta.job)
 686                                 free(j_path);
 687
 688                         if (!dbus_message_iter_close_container(&sub, &sub2))
 689                                 goto oom;
 690                 }
 691
 692                 if (!dbus_message_iter_close_container(&iter, &sub))
 693                         goto oom;
 694
 695         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 696                 DBusMessageIter iter, sub;
 697                 Iterator i;
 698                 Job *j;
 699
 700                 if (!(reply = dbus_message_new_method_return(message)))
 701                         goto oom;
 702
 703                 dbus_message_iter_init_append(reply, &iter);
 704
 705                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 706                         goto oom;
 707
 708                 HASHMAP_FOREACH(j, m->jobs, i) {
 709                         char *u_path, *j_path;
 710                         const char *state, *type;
 711                         uint32_t id;
 712                         DBusMessageIter sub2;
 713
 714                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 715                                 goto oom;
 716
 717                         id = (uint32_t) j->id;
 718                         state = job_state_to_string(j->state);
 719                         type = job_type_to_string(j->type);
 720
 721                         if (!(j_path = job_dbus_path(j)))
 722                                 goto oom;
 723
 724                         if (!(u_path = unit_dbus_path(j->unit))) {
 725                                 free(j_path);
 726                                 goto oom;
 727                         }
 728
 729                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 730                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 731                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 732                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 733                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 734                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 735                                 free(j_path);
 736                                 free(u_path);
 737                                 goto oom;
 738                         }
 739
 740                         free(j_path);
 741                         free(u_path);
 742
 743                         if (!dbus_message_iter_close_container(&sub, &sub2))
 744                                 goto oom;
 745                 }
 746
 747                 if (!dbus_message_iter_close_container(&iter, &sub))
 748                         goto oom;
 749
 750         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 751                 char *client;
 752                 Set *s;
 753
 754                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 755                         if (!(s = set_new(string_hash_func, string_compare_func)))
 756                                 goto oom;
 757
 758                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 759                                 set_free(s);
 760                                 goto oom;
 761                         }
 762                 }
 763
 764                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 765                         goto oom;
 766
 767                 if ((r = set_put(s, client)) < 0) {
 768                         free(client);
 769                         return bus_send_error_reply(connection, message, NULL, r);
 770                 }
 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", "Unsubscribe")) {
 776                 char *client;
 777
 778                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 779                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 780                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 781                 }
 782
 783                 free(client);
 784
 785                 if (!(reply = dbus_message_new_method_return(message)))
 786                         goto oom;
 787
 788         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 789                 FILE *f;
 790                 char *dump = NULL;
 791                 size_t size;
 792
 793                 if (!(reply = dbus_message_new_method_return(message)))
 794                         goto oom;
 795
 796                 if (!(f = open_memstream(&dump, &size)))
 797                         goto oom;
 798
 799                 manager_dump_units(m, f, NULL);
 800                 manager_dump_jobs(m, f, NULL);
 801
 802                 if (ferror(f)) {
 803                         fclose(f);
 804                         free(dump);
 805                         goto oom;
 806                 }
 807
 808                 fclose(f);
 809
 810                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 811                         free(dump);
 812                         goto oom;
 813                 }
 814
 815                 free(dump);
 816         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 817                 const char *name;
 818                 dbus_bool_t cleanup;
 819                 Snapshot *s;
 820
 821                 if (!dbus_message_get_args(
 822                                     message,
 823                                     &error,
 824                                     DBUS_TYPE_STRING, &name,
 825                                     DBUS_TYPE_BOOLEAN, &cleanup,
 826                                     DBUS_TYPE_INVALID))
 827                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 828
 829                 if (name && name[0] == 0)
 830                         name = NULL;
 831
 832                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 833                         return bus_send_error_reply(connection, message, &error, r);
 834
 835                 if (!(reply = dbus_message_new_method_return(message)))
 836                         goto oom;
 837
 838                 if (!(path = unit_dbus_path(UNIT(s))))
 839                         goto oom;
 840
 841                 if (!dbus_message_append_args(
 842                                     reply,
 843                                     DBUS_TYPE_OBJECT_PATH, &path,
 844                                     DBUS_TYPE_INVALID))
 845                         goto oom;
 846
 847         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 848                 char *introspection = NULL;
 849                 FILE *f;
 850                 Iterator i;
 851                 Unit *u;
 852                 Job *j;
 853                 const char *k;
 854                 size_t size;
 855
 856                 if (!(reply = dbus_message_new_method_return(message)))
 857                         goto oom;
 858
 859                 /* We roll our own introspection code here, instead of
 860                  * relying on bus_default_message_handler() because we
 861                  * need to generate our introspection string
 862                  * dynamically. */
 863
 864                 if (!(f = open_memstream(&introspection, &size)))
 865                         goto oom;
 866
 867                 fputs(INTROSPECTION_BEGIN, f);
 868
 869                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 870                         char *p;
 871
 872                         if (k != u->meta.id)
 873                                 continue;
 874
 875                         if (!(p = bus_path_escape(k))) {
 876                                 fclose(f);
 877                                 free(introspection);
 878                                 goto oom;
 879                         }
 880
 881                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 882                         free(p);
 883                 }
 884
 885                 HASHMAP_FOREACH(j, m->jobs, i)
 886                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 887
 888                 fputs(INTROSPECTION_END, f);
 889
 890                 if (ferror(f)) {
 891                         fclose(f);
 892                         free(introspection);
 893                         goto oom;
 894                 }
 895
 896                 fclose(f);
 897
 898                 if (!introspection)
 899                         goto oom;
 900
 901                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 902                         free(introspection);
 903                         goto oom;
 904                 }
 905
 906                 free(introspection);
 907
 908         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 909
 910                 assert(!m->queued_message);
 911
 912                 /* Instead of sending the reply back right away, we
 913                  * just remember that we need to and then send it
 914                  * after the reload is finished. That way the caller
 915                  * knows when the reload finished. */
 916
 917                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 918                         goto oom;
 919
 920                 m->queued_message_connection = connection;
 921                 m->exit_code = MANAGER_RELOAD;
 922
 923         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 924
 925                 if (!(reply = dbus_message_new_method_return(message)))
 926                         goto oom;
 927
 928                 m->exit_code = MANAGER_REEXECUTE;
 929
 930         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 931
 932                 if (m->running_as == MANAGER_SYSTEM) {
 933                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
 934                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 935                 }
 936
 937                 if (!(reply = dbus_message_new_method_return(message)))
 938                         goto oom;
 939
 940                 m->exit_code = MANAGER_EXIT;
 941
 942         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 943
 944                 if (m->running_as != MANAGER_SYSTEM) {
 945                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
 946                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 947                 }
 948
 949                 if (!(reply = dbus_message_new_method_return(message)))
 950                         goto oom;
 951
 952                 m->exit_code = MANAGER_REBOOT;
 953
 954         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 955
 956                 if (m->running_as != MANAGER_SYSTEM) {
 957                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
 958                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 959                 }
 960
 961                 if (!(reply = dbus_message_new_method_return(message)))
 962                         goto oom;
 963
 964                 m->exit_code = MANAGER_POWEROFF;
 965
 966         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 967
 968                 if (m->running_as != MANAGER_SYSTEM) {
 969                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 970                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 971                 }
 972
 973                 if (!(reply = dbus_message_new_method_return(message)))
 974                         goto oom;
 975
 976                 m->exit_code = MANAGER_HALT;
 977
 978         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
 979
 980                 if (m->running_as != MANAGER_SYSTEM) {
 981                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
 982                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 983                 }
 984
 985                 if (!(reply = dbus_message_new_method_return(message)))
 986                         goto oom;
 987
 988                 m->exit_code = MANAGER_KEXEC;
 989
 990         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 991                 char **l = NULL, **e = NULL;
 992
 993                 if ((r = bus_parse_strv(message, &l)) < 0) {
 994                         if (r == -ENOMEM)
 995                                 goto oom;
 996
 997                         return bus_send_error_reply(connection, message, NULL, r);
 998                 }
 999
1000                 e = strv_env_merge(2, m->environment, l);
1001                 strv_free(l);
1002
1003                 if (!e)
1004                         goto oom;
1005
1006                 if (!(reply = dbus_message_new_method_return(message))) {
1007                         strv_free(e);
1008                         goto oom;
1009                 }
1010
1011                 strv_free(m->environment);
1012                 m->environment = e;
1013
1014         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1015                 char **l = NULL, **e = NULL;
1016
1017                 if ((r = bus_parse_strv(message, &l)) < 0) {
1018                         if (r == -ENOMEM)
1019                                 goto oom;
1020
1021                         return bus_send_error_reply(connection, message, NULL, r);
1022                 }
1023
1024                 e = strv_env_delete(m->environment, 1, l);
1025                 strv_free(l);
1026
1027                 if (!e)
1028                         goto oom;
1029
1030                 if (!(reply = dbus_message_new_method_return(message))) {
1031                         strv_free(e);
1032                         goto oom;
1033                 }
1034
1035                 strv_free(m->environment);
1036                 m->environment = e;
1037
1038         } else
1039                 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
1040
1041         if (job_type != _JOB_TYPE_INVALID) {
1042                 const char *name, *smode, *old_name = NULL;
1043                 JobMode mode;
1044                 Job *j;
1045                 Unit *u;
1046                 bool b;
1047
1048                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1049                         b = dbus_message_get_args(
1050                                         message,
1051                                         &error,
1052                                         DBUS_TYPE_STRING, &old_name,
1053                                         DBUS_TYPE_STRING, &name,
1054                                         DBUS_TYPE_STRING, &smode,
1055                                         DBUS_TYPE_INVALID);
1056                 else
1057                         b = dbus_message_get_args(
1058                                         message,
1059                                         &error,
1060                                         DBUS_TYPE_STRING, &name,
1061                                         DBUS_TYPE_STRING, &smode,
1062                                         DBUS_TYPE_INVALID);
1063
1064                 if (!b)
1065                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1066
1067                 if (old_name)
1068                         if (!(u = manager_get_unit(m, old_name)) ||
1069                             !u->meta.job ||
1070                             u->meta.job->type != JOB_START) {
1071                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1072                                 return bus_send_error_reply(connection, message, &error, -ENOENT);
1073                         }
1074
1075
1076                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1077                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1078                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1079                 }
1080
1081                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1082                         return bus_send_error_reply(connection, message, &error, r);
1083
1084                 if (reload_if_possible && unit_can_reload(u)) {
1085                         if (job_type == JOB_RESTART)
1086                                 job_type = JOB_RELOAD_OR_START;
1087                         else if (job_type == JOB_TRY_RESTART)
1088                                 job_type = JOB_RELOAD;
1089                 }
1090
1091                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1092                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1093                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1094                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1095                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1096                         return bus_send_error_reply(connection, message, &error, -EPERM);
1097                 }
1098
1099                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1100                         return bus_send_error_reply(connection, message, &error, r);
1101
1102                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1103                         goto oom;
1104
1105                 j->bus = connection;
1106
1107                 if (!(reply = dbus_message_new_method_return(message)))
1108                         goto oom;
1109
1110                 if (!(path = job_dbus_path(j)))
1111                         goto oom;
1112
1113                 if (!dbus_message_append_args(
1114                                     reply,
1115                                     DBUS_TYPE_OBJECT_PATH, &path,
1116                                     DBUS_TYPE_INVALID))
1117                         goto oom;
1118         }
1119
1120         if (reply) {
1121                 if (!dbus_connection_send(connection, reply, NULL))
1122                         goto oom;
1123
1124                 dbus_message_unref(reply);
1125         }
1126
1127         free(path);
1128
1129         return DBUS_HANDLER_RESULT_HANDLED;
1130
1131 oom:
1132         free(path);
1133
1134         if (reply)
1135                 dbus_message_unref(reply);
1136
1137         dbus_error_free(&error);
1138
1139         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1140 }
1141
1142 const DBusObjectPathVTable bus_manager_vtable = {
1143         .message_function = bus_manager_message_handler
1144 };