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 #include "install.h"
  33
  34 #define BUS_MANAGER_INTERFACE_BEGIN                                     \
  35         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
  36
  37 #define BUS_MANAGER_INTERFACE_METHODS                                   \
  38         "  <method name=\"GetUnit\">\n"                                 \
  39         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  40         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  41         "  </method>\n"                                                 \
  42         "  <method name=\"GetUnitByPID\">\n"                            \
  43         "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
  44         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  45         "  </method>\n"                                                 \
  46         "  <method name=\"LoadUnit\">\n"                                \
  47         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  48         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  49         "  </method>\n"                                                 \
  50         "  <method name=\"StartUnit\">\n"                               \
  51         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  52         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  53         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  54         "  </method>\n"                                                 \
  55         "  <method name=\"StartUnitReplace\">\n"                        \
  56         "   <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n"     \
  57         "   <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n"     \
  58         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  59         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  60         "  </method>\n"                                                 \
  61         "  <method name=\"StopUnit\">\n"                                \
  62         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  63         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  64         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  65         "  </method>\n"                                                 \
  66         "  <method name=\"ReloadUnit\">\n"                              \
  67         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  68         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  69         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  70         "  </method>\n"                                                 \
  71         "  <method name=\"RestartUnit\">\n"                             \
  72         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  73         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  74         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  75         "  </method>\n"                                                 \
  76         "  <method name=\"TryRestartUnit\">\n"                          \
  77         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  78         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  79         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  80         "  </method>\n"                                                 \
  81         "  <method name=\"ReloadOrRestartUnit\">\n"                     \
  82         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  83         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  84         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  85         "  </method>\n"                                                 \
  86         "  <method name=\"ReloadOrTryRestartUnit\">\n"                  \
  87         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  88         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  89         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  90         "  </method>\n"                                                 \
  91         "  <method name=\"KillUnit\">\n"                                \
  92         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  93         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
  94         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  95         "   <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n"       \
  96         "  </method>\n"                                                 \
  97         "  <method name=\"ResetFailedUnit\">\n"                         \
  98         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  99         "  </method>\n"                                                 \
 100         "  <method name=\"GetJob\">\n"                                  \
 101         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
 102         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
 103         "  </method>\n"                                                 \
 104         "  <method name=\"ClearJobs\"/>\n"                              \
 105         "  <method name=\"ResetFailed\"/>\n"                            \
 106         "  <method name=\"ListUnits\">\n"                               \
 107         "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
 108         "  </method>\n"                                                 \
 109         "  <method name=\"ListJobs\">\n"                                \
 110         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
 111         "  </method>\n"                                                 \
 112         "  <method name=\"Subscribe\"/>\n"                              \
 113         "  <method name=\"Unsubscribe\"/>\n"                            \
 114         "  <method name=\"Dump\"/>\n"                                   \
 115         "  <method name=\"CreateSnapshot\">\n"                          \
 116         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
 117         "   <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
 118         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
 119         "  </method>\n"                                                 \
 120         "  <method name=\"Reload\"/>\n"                                 \
 121         "  <method name=\"Reexecute\"/>\n"                              \
 122         "  <method name=\"Exit\"/>\n"                                   \
 123         "  <method name=\"Reboot\"/>\n"                                 \
 124         "  <method name=\"PowerOff\"/>\n"                               \
 125         "  <method name=\"Halt\"/>\n"                                   \
 126         "  <method name=\"KExec\"/>\n"                                  \
 127         "  <method name=\"SetEnvironment\">\n"                          \
 128         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 129         "  </method>\n"                                                 \
 130         "  <method name=\"UnsetEnvironment\">\n"                        \
 131         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 132         "  </method>\n"                                                 \
 133         "  <method name=\"UnsetAndSetEnvironment\">\n"                  \
 134         "   <arg name=\"unset\" type=\"as\" direction=\"in\"/>\n"       \
 135         "   <arg name=\"set\" type=\"as\" direction=\"in\"/>\n"         \
 136         "  </method>\n"                                                 \
 137         "  <method name=\"ListUnitFiles\">\n"                            \
 138         "   <arg name=\"changes\" type=\"a(ss)\" direction=\"out\"/>\n" \
 139         "  </method>\n"                                                 \
 140         "  <method name=\"GetUnitFileState\">\n"                        \
 141         "   <arg name=\"file\" type=\"s\" direction=\"in\"/>\n"         \
 142         "   <arg name=\"state\" type=\"s\" direction=\"out\"/>\n"       \
 143         "  </method>\n"                                                 \
 144         "  <method name=\"EnableUnitFiles\">\n"                         \
 145         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 146         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 147         "   <arg name=\"force\" type=\"b\" direction=\"in\"/>\n"        \
 148         "   <arg name=\"carries_install_info\" type=\"b\" direction=\"out\"/>\n" \
 149         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 150         "  </method>\n"                                                 \
 151         "  <method name=\"DisableUnitFiles\">\n"                        \
 152         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 153         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 154         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 155         "  </method>\n"                                                 \
 156         "  <method name=\"ReenableUnitFiles\">\n"                       \
 157         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 158         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 159         "   <arg name=\"force\" type=\"b\" direction=\"in\"/>\n"        \
 160         "   <arg name=\"carries_install_info\" type=\"b\" direction=\"out\"/>\n" \
 161         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 162         "  </method>\n"                                                 \
 163         "  <method name=\"LinkUnitFiles\">\n"                           \
 164         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 165         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 166         "   <arg name=\"force\" type=\"b\" direction=\"in\"/>\n"        \
 167         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 168         "  </method>\n"                                                 \
 169         "  <method name=\"PresetUnitFiles\">\n"                         \
 170         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 171         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 172         "   <arg name=\"force\" type=\"b\" direction=\"in\"/>\n"        \
 173         "   <arg name=\"carries_install_info\" type=\"b\" direction=\"out\"/>\n" \
 174         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 175         "  </method>\n"                                                 \
 176         "  <method name=\"MaskUnitFiles\">\n"                           \
 177         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 178         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 179         "   <arg name=\"force\" type=\"b\" direction=\"in\"/>\n"        \
 180         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 181         "  </method>\n"                                                 \
 182         "  <method name=\"UnmaskUnitFiles\">\n"                         \
 183         "   <arg name=\"files\" type=\"as\" direction=\"in\"/>\n"       \
 184         "   <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n"      \
 185         "   <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
 186         "  </method>\n"
 187
 188 #define BUS_MANAGER_INTERFACE_SIGNALS                                   \
 189         "  <signal name=\"UnitNew\">\n"                                 \
 190         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 191         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 192         "  </signal>\n"                                                 \
 193         "  <signal name=\"UnitRemoved\">\n"                             \
 194         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 195         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 196         "  </signal>\n"                                                 \
 197         "  <signal name=\"JobNew\">\n"                                  \
 198         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 199         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 200         "  </signal>\n"                                                 \
 201         "  <signal name=\"JobRemoved\">\n"                              \
 202         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 203         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 204         "   <arg name=\"result\" type=\"s\"/>\n"                        \
 205         "  </signal>"                                                   \
 206         "  <signal name=\"StartupFinished\">\n"                         \
 207         "   <arg name=\"kernel\" type=\"t\"/>\n"                        \
 208         "   <arg name=\"initrd\" type=\"t\"/>\n"                        \
 209         "   <arg name=\"userspace\" type=\"t\"/>\n"                     \
 210         "   <arg name=\"total\" type=\"t\"/>\n"                         \
 211         "  </signal>"                                                   \
 212         "  <signal name=\"UnitFilesChanged\"/>\n"
 213
 214 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 215         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 216         "  <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
 217         "  <property name=\"Features\" type=\"s\" access=\"read\"/>\n"  \
 218         "  <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n"   \
 219         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 220         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 221         "  <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 222         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 223         "  <property name=\"StartupTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 224         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 225         "  <property name=\"FinishTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 226         "  <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n"  \
 227         "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
 228         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 229         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 230         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 231         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 232         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 233         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 234         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 235         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 236         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 237         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 238         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 239         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 240         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 241         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 242         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 243         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 244
 245 #ifdef HAVE_SYSV_COMPAT
 246 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 247         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 248         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 249         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 250 #else
 251 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 252 #endif
 253
 254 #define BUS_MANAGER_INTERFACE_END                                       \
 255         " </interface>\n"
 256
 257 #define BUS_MANAGER_INTERFACE                                           \
 258         BUS_MANAGER_INTERFACE_BEGIN                                     \
 259         BUS_MANAGER_INTERFACE_METHODS                                   \
 260         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 261         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 262         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 263         BUS_MANAGER_INTERFACE_END
 264
 265 #define INTROSPECTION_BEGIN                                             \
 266         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 267         "<node>\n"                                                      \
 268         BUS_MANAGER_INTERFACE                                           \
 269         BUS_PROPERTIES_INTERFACE                                        \
 270         BUS_PEER_INTERFACE                                              \
 271         BUS_INTROSPECTABLE_INTERFACE
 272
 273 #define INTROSPECTION_END                                               \
 274         "</node>\n"
 275
 276 #define INTERFACES_LIST                              \
 277         BUS_GENERIC_INTERFACES_LIST                  \
 278         "org.freedesktop.systemd1.Manager\0"
 279
 280 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 281
 282 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 283 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 284
 285 static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
 286         const char *t;
 287         Manager *m = data;
 288         char buf[LINE_MAX] = "", *e = buf, *p = NULL;
 289
 290         assert(i);
 291         assert(property);
 292         assert(m);
 293
 294         if (m->taint_usr)
 295                 e = stpcpy(e, "usr-separate-fs ");
 296
 297         if (readlink_malloc("/etc/mtab", &p) < 0)
 298                 e = stpcpy(e, "etc-mtab-not-symlink ");
 299         else
 300                 free(p);
 301
 302         if (access("/proc/cgroups", F_OK) < 0)
 303                 stpcpy(e, "cgroups-missing ");
 304
 305         t = strstrip(buf);
 306
 307         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 308                 return -ENOMEM;
 309
 310         return 0;
 311 }
 312
 313 static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
 314         const char *t;
 315
 316         assert(i);
 317         assert(property);
 318
 319         t = log_target_to_string(log_get_target());
 320
 321         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 322                 return -ENOMEM;
 323
 324         return 0;
 325 }
 326
 327 static int bus_manager_set_log_target(DBusMessageIter *i, const char *property) {
 328         const char *t;
 329
 330         assert(i);
 331         assert(property);
 332
 333         dbus_message_iter_get_basic(i, &t);
 334
 335         return log_set_target_from_string(t);
 336 }
 337
 338 static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
 339         const char *t;
 340
 341         assert(i);
 342         assert(property);
 343
 344         t = log_level_to_string(log_get_max_level());
 345
 346         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 347                 return -ENOMEM;
 348
 349         return 0;
 350 }
 351
 352 static int bus_manager_set_log_level(DBusMessageIter *i, const char *property) {
 353         const char *t;
 354
 355         assert(i);
 356         assert(property);
 357
 358         dbus_message_iter_get_basic(i, &t);
 359
 360         return log_set_max_level_from_string(t);
 361 }
 362
 363 static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
 364         Manager *m = data;
 365         uint32_t u;
 366
 367         assert(i);
 368         assert(property);
 369         assert(m);
 370
 371         u = hashmap_size(m->units);
 372
 373         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 374                 return -ENOMEM;
 375
 376         return 0;
 377 }
 378
 379 static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
 380         Manager *m = data;
 381         uint32_t u;
 382
 383         assert(i);
 384         assert(property);
 385         assert(m);
 386
 387         u = hashmap_size(m->jobs);
 388
 389         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 390                 return -ENOMEM;
 391
 392         return 0;
 393 }
 394
 395 static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
 396         double d;
 397         Manager *m = data;
 398
 399         assert(i);
 400         assert(property);
 401         assert(m);
 402
 403         if (dual_timestamp_is_set(&m->finish_timestamp))
 404                 d = 1.0;
 405         else
 406                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 407
 408         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 409                 return -ENOMEM;
 410
 411         return 0;
 412 }
 413
 414 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 415         const char *s;
 416
 417         assert(m);
 418
 419         if ((s = dbus_message_get_sender(m)))
 420                 return s;
 421
 422         /* When the message came in from a direct connection the
 423          * message will have no sender. We fix that here. */
 424
 425         return ":no-sender";
 426 }
 427
 428 static DBusMessage *message_from_file_changes(
 429                 DBusMessage *m,
 430                 UnitFileChange *changes,
 431                 unsigned n_changes,
 432                 int carries_install_info) {
 433
 434         DBusMessageIter iter, sub, sub2;
 435         DBusMessage *reply;
 436         unsigned i;
 437
 438         reply = dbus_message_new_method_return(m);
 439         if (!reply)
 440                 return NULL;
 441
 442         dbus_message_iter_init_append(reply, &iter);
 443
 444         if (carries_install_info >= 0) {
 445                 dbus_bool_t b;
 446
 447                 b = !!carries_install_info;
 448                 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b))
 449                         goto oom;
 450         }
 451
 452         if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sss)", &sub))
 453                 goto oom;
 454
 455         for (i = 0; i < n_changes; i++) {
 456                 const char *type, *path, *source;
 457
 458                 type = unit_file_change_type_to_string(changes[i].type);
 459                 path = strempty(changes[i].path);
 460                 source = strempty(changes[i].source);
 461
 462                 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
 463                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 464                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &path) ||
 465                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &source) ||
 466                     !dbus_message_iter_close_container(&sub, &sub2))
 467                         goto oom;
 468         }
 469
 470         if (!dbus_message_iter_close_container(&iter, &sub))
 471                 goto oom;
 472
 473         return reply;
 474
 475 oom:
 476         dbus_message_unref(reply);
 477         return NULL;
 478 }
 479
 480 static int bus_manager_send_unit_files_changed(Manager *m) {
 481         DBusMessage *s;
 482         int r;
 483
 484         s = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
 485         if (!s)
 486                 return -ENOMEM;
 487
 488         r = bus_broadcast(m, s);
 489         dbus_message_unref(s);
 490
 491         return r;
 492 }
 493
 494 static const char systemd_property_string[] = PACKAGE_STRING "\0" DISTRIBUTION "\0" SYSTEMD_FEATURES;
 495
 496 static const BusProperty bus_systemd_properties[] = {
 497         { "Version",       bus_property_append_string,    "s",  0                                             },
 498         { "Distribution",  bus_property_append_string,    "s",  sizeof(PACKAGE_STRING)                        },
 499         { "Features",      bus_property_append_string,    "s",  sizeof(PACKAGE_STRING) + sizeof(DISTRIBUTION) },
 500         { NULL, }
 501 };
 502
 503 static const BusProperty bus_manager_properties[] = {
 504         { "RunningAs",     bus_manager_append_running_as,          "s", offsetof(Manager, running_as)                  },
 505         { "Tainted",       bus_manager_append_tainted,             "s", 0 },
 506         { "InitRDTimestamp", bus_property_append_uint64,           "t", offsetof(Manager, initrd_timestamp.realtime)   },
 507         { "InitRDTimestampMonotonic", bus_property_append_uint64,  "t", offsetof(Manager, initrd_timestamp.monotonic)  },
 508         { "StartupTimestamp", bus_property_append_uint64,          "t", offsetof(Manager, startup_timestamp.realtime)  },
 509         { "StartupTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, startup_timestamp.monotonic) },
 510         { "FinishTimestamp", bus_property_append_uint64,           "t", offsetof(Manager, finish_timestamp.realtime)   },
 511         { "FinishTimestampMonotonic", bus_property_append_uint64,  "t", offsetof(Manager, finish_timestamp.monotonic)  },
 512         { "LogLevel",      bus_manager_append_log_level,           "s", 0,                                             0, bus_manager_set_log_level },
 513         { "LogTarget",     bus_manager_append_log_target,          "s", 0,                                             0, bus_manager_set_log_target },
 514         { "NNames",        bus_manager_append_n_names,             "u", 0 },
 515         { "NJobs",         bus_manager_append_n_jobs,              "u", 0 },
 516         { "NInstalledJobs",bus_property_append_uint32,             "u", offsetof(Manager, n_installed_jobs)            },
 517         { "NFailedJobs",   bus_property_append_uint32,             "u", offsetof(Manager, n_failed_jobs)               },
 518         { "Progress",      bus_manager_append_progress,            "d", 0 },
 519         { "Environment",   bus_property_append_strv,              "as", offsetof(Manager, environment),                true },
 520         { "ConfirmSpawn",  bus_property_append_bool,               "b", offsetof(Manager, confirm_spawn)               },
 521         { "ShowStatus",    bus_property_append_bool,               "b", offsetof(Manager, show_status)                 },
 522         { "UnitPath",      bus_property_append_strv,              "as", offsetof(Manager, lookup_paths.unit_path),     true },
 523         { "NotifySocket",  bus_property_append_string,             "s", offsetof(Manager, notify_socket),              true },
 524         { "ControlGroupHierarchy", bus_property_append_string,     "s", offsetof(Manager, cgroup_hierarchy),           true },
 525         { "MountAuto",     bus_property_append_bool,               "b", offsetof(Manager, mount_auto)                  },
 526         { "SwapAuto",      bus_property_append_bool,               "b", offsetof(Manager, swap_auto)                   },
 527         { "DefaultControllers", bus_property_append_strv,         "as", offsetof(Manager, default_controllers),        true },
 528         { "DefaultStandardOutput", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_output)          },
 529         { "DefaultStandardError",  bus_manager_append_exec_output, "s", offsetof(Manager, default_std_error)           },
 530 #ifdef HAVE_SYSV_COMPAT
 531         { "SysVConsole",   bus_property_append_bool,               "b", offsetof(Manager, sysv_console)                },
 532         { "SysVInitPath",  bus_property_append_strv,              "as", offsetof(Manager, lookup_paths.sysvinit_path), true },
 533         { "SysVRcndPath",  bus_property_append_strv,              "as", offsetof(Manager, lookup_paths.sysvrcnd_path), true },
 534 #endif
 535         { NULL, }
 536 };
 537
 538 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 539         Manager *m = data;
 540
 541         int r;
 542         DBusError error;
 543         DBusMessage *reply = NULL;
 544         char * path = NULL;
 545         JobType job_type = _JOB_TYPE_INVALID;
 546         bool reload_if_possible = false;
 547         const char *member;
 548
 549         assert(connection);
 550         assert(message);
 551         assert(m);
 552
 553         dbus_error_init(&error);
 554
 555         member = dbus_message_get_member(message);
 556
 557         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 558                 const char *name;
 559                 Unit *u;
 560
 561                 if (!dbus_message_get_args(
 562                                     message,
 563                                     &error,
 564                                     DBUS_TYPE_STRING, &name,
 565                                     DBUS_TYPE_INVALID))
 566                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 567
 568                 if (!(u = manager_get_unit(m, name))) {
 569                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 570                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 571                 }
 572
 573                 if (!(reply = dbus_message_new_method_return(message)))
 574                         goto oom;
 575
 576                 if (!(path = unit_dbus_path(u)))
 577                         goto oom;
 578
 579                 if (!dbus_message_append_args(
 580                                     reply,
 581                                     DBUS_TYPE_OBJECT_PATH, &path,
 582                                     DBUS_TYPE_INVALID))
 583                         goto oom;
 584         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 585                 Unit *u;
 586                 uint32_t pid;
 587
 588                 if (!dbus_message_get_args(
 589                                     message,
 590                                     &error,
 591                                     DBUS_TYPE_UINT32, &pid,
 592                                     DBUS_TYPE_INVALID))
 593                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 594
 595                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 596                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 597                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 598                 }
 599
 600                 if (!(reply = dbus_message_new_method_return(message)))
 601                         goto oom;
 602
 603                 if (!(path = unit_dbus_path(u)))
 604                         goto oom;
 605
 606                 if (!dbus_message_append_args(
 607                                     reply,
 608                                     DBUS_TYPE_OBJECT_PATH, &path,
 609                                     DBUS_TYPE_INVALID))
 610                         goto oom;
 611         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 612                 const char *name;
 613                 Unit *u;
 614
 615                 if (!dbus_message_get_args(
 616                                     message,
 617                                     &error,
 618                                     DBUS_TYPE_STRING, &name,
 619                                     DBUS_TYPE_INVALID))
 620                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 621
 622                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 623                         return bus_send_error_reply(connection, message, &error, r);
 624
 625                 if (!(reply = dbus_message_new_method_return(message)))
 626                         goto oom;
 627
 628                 if (!(path = unit_dbus_path(u)))
 629                         goto oom;
 630
 631                 if (!dbus_message_append_args(
 632                                     reply,
 633                                     DBUS_TYPE_OBJECT_PATH, &path,
 634                                     DBUS_TYPE_INVALID))
 635                         goto oom;
 636
 637         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 638                 job_type = JOB_START;
 639         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 640                 job_type = JOB_START;
 641         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 642                 job_type = JOB_STOP;
 643         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 644                 job_type = JOB_RELOAD;
 645         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 646                 job_type = JOB_RESTART;
 647         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 648                 job_type = JOB_TRY_RESTART;
 649         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 650                 reload_if_possible = true;
 651                 job_type = JOB_RESTART;
 652         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 653                 reload_if_possible = true;
 654                 job_type = JOB_TRY_RESTART;
 655         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 656                 const char *name, *swho, *smode;
 657                 int32_t signo;
 658                 Unit *u;
 659                 KillMode mode;
 660                 KillWho who;
 661
 662                 if (!dbus_message_get_args(
 663                                     message,
 664                                     &error,
 665                                     DBUS_TYPE_STRING, &name,
 666                                     DBUS_TYPE_STRING, &swho,
 667                                     DBUS_TYPE_STRING, &smode,
 668                                     DBUS_TYPE_INT32, &signo,
 669                                     DBUS_TYPE_INVALID))
 670                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 671
 672                 if (isempty(swho))
 673                         who = KILL_ALL;
 674                 else {
 675                         who = kill_who_from_string(swho);
 676                         if (who < 0)
 677                                 return bus_send_error_reply(connection, message, &error, -EINVAL);
 678                 }
 679
 680                 if (isempty(smode))
 681                         mode = KILL_CONTROL_GROUP;
 682                 else {
 683                         mode = kill_mode_from_string(smode);
 684                         if (mode < 0)
 685                                 return bus_send_error_reply(connection, message, &error, -EINVAL);
 686                 }
 687
 688                 if (signo <= 0 || signo >= _NSIG)
 689                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 690
 691                 if (!(u = manager_get_unit(m, name))) {
 692                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 693                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 694                 }
 695
 696                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 697                         return bus_send_error_reply(connection, message, &error, r);
 698
 699                 if (!(reply = dbus_message_new_method_return(message)))
 700                         goto oom;
 701
 702         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 703                 uint32_t id;
 704                 Job *j;
 705
 706                 if (!dbus_message_get_args(
 707                                     message,
 708                                     &error,
 709                                     DBUS_TYPE_UINT32, &id,
 710                                     DBUS_TYPE_INVALID))
 711                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 712
 713                 if (!(j = manager_get_job(m, id))) {
 714                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 715                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 716                 }
 717
 718                 if (!(reply = dbus_message_new_method_return(message)))
 719                         goto oom;
 720
 721                 if (!(path = job_dbus_path(j)))
 722                         goto oom;
 723
 724                 if (!dbus_message_append_args(
 725                                     reply,
 726                                     DBUS_TYPE_OBJECT_PATH, &path,
 727                                     DBUS_TYPE_INVALID))
 728                         goto oom;
 729
 730         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 731
 732                 manager_clear_jobs(m);
 733
 734                 if (!(reply = dbus_message_new_method_return(message)))
 735                         goto oom;
 736
 737         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 738
 739                 manager_reset_failed(m);
 740
 741                 if (!(reply = dbus_message_new_method_return(message)))
 742                         goto oom;
 743
 744         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 745                 const char *name;
 746                 Unit *u;
 747
 748                 if (!dbus_message_get_args(
 749                                     message,
 750                                     &error,
 751                                     DBUS_TYPE_STRING, &name,
 752                                     DBUS_TYPE_INVALID))
 753                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 754
 755                 if (!(u = manager_get_unit(m, name))) {
 756                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 757                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 758                 }
 759
 760                 unit_reset_failed(u);
 761
 762                 if (!(reply = dbus_message_new_method_return(message)))
 763                         goto oom;
 764
 765         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 766                 DBusMessageIter iter, sub;
 767                 Iterator i;
 768                 Unit *u;
 769                 const char *k;
 770
 771                 if (!(reply = dbus_message_new_method_return(message)))
 772                         goto oom;
 773
 774                 dbus_message_iter_init_append(reply, &iter);
 775
 776                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 777                         goto oom;
 778
 779                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 780                         char *u_path, *j_path;
 781                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 782                         DBusMessageIter sub2;
 783                         uint32_t job_id;
 784                         Unit *f;
 785
 786                         if (k != u->id)
 787                                 continue;
 788
 789                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 790                                 goto oom;
 791
 792                         description = unit_description(u);
 793                         load_state = unit_load_state_to_string(u->load_state);
 794                         active_state = unit_active_state_to_string(unit_active_state(u));
 795                         sub_state = unit_sub_state_to_string(u);
 796
 797                         f = unit_following(u);
 798                         following = f ? f->id : "";
 799
 800                         if (!(u_path = unit_dbus_path(u)))
 801                                 goto oom;
 802
 803                         if (u->job) {
 804                                 job_id = (uint32_t) u->job->id;
 805
 806                                 if (!(j_path = job_dbus_path(u->job))) {
 807                                         free(u_path);
 808                                         goto oom;
 809                                 }
 810
 811                                 sjob_type = job_type_to_string(u->job->type);
 812                         } else {
 813                                 job_id = 0;
 814                                 j_path = u_path;
 815                                 sjob_type = "";
 816                         }
 817
 818                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->id) ||
 819                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 820                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 821                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 822                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 823                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 824                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 825                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 826                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 827                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 828                                 free(u_path);
 829                                 if (u->job)
 830                                         free(j_path);
 831                                 goto oom;
 832                         }
 833
 834                         free(u_path);
 835                         if (u->job)
 836                                 free(j_path);
 837
 838                         if (!dbus_message_iter_close_container(&sub, &sub2))
 839                                 goto oom;
 840                 }
 841
 842                 if (!dbus_message_iter_close_container(&iter, &sub))
 843                         goto oom;
 844
 845         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 846                 DBusMessageIter iter, sub;
 847                 Iterator i;
 848                 Job *j;
 849
 850                 if (!(reply = dbus_message_new_method_return(message)))
 851                         goto oom;
 852
 853                 dbus_message_iter_init_append(reply, &iter);
 854
 855                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 856                         goto oom;
 857
 858                 HASHMAP_FOREACH(j, m->jobs, i) {
 859                         char *u_path, *j_path;
 860                         const char *state, *type;
 861                         uint32_t id;
 862                         DBusMessageIter sub2;
 863
 864                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 865                                 goto oom;
 866
 867                         id = (uint32_t) j->id;
 868                         state = job_state_to_string(j->state);
 869                         type = job_type_to_string(j->type);
 870
 871                         if (!(j_path = job_dbus_path(j)))
 872                                 goto oom;
 873
 874                         if (!(u_path = unit_dbus_path(j->unit))) {
 875                                 free(j_path);
 876                                 goto oom;
 877                         }
 878
 879                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 880                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->id) ||
 881                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 882                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 883                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 884                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 885                                 free(j_path);
 886                                 free(u_path);
 887                                 goto oom;
 888                         }
 889
 890                         free(j_path);
 891                         free(u_path);
 892
 893                         if (!dbus_message_iter_close_container(&sub, &sub2))
 894                                 goto oom;
 895                 }
 896
 897                 if (!dbus_message_iter_close_container(&iter, &sub))
 898                         goto oom;
 899
 900         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 901                 char *client;
 902                 Set *s;
 903
 904                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 905                         if (!(s = set_new(string_hash_func, string_compare_func)))
 906                                 goto oom;
 907
 908                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 909                                 set_free(s);
 910                                 goto oom;
 911                         }
 912                 }
 913
 914                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 915                         goto oom;
 916
 917                 if ((r = set_put(s, client)) < 0) {
 918                         free(client);
 919                         return bus_send_error_reply(connection, message, NULL, r);
 920                 }
 921
 922                 if (!(reply = dbus_message_new_method_return(message)))
 923                         goto oom;
 924
 925         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 926                 char *client;
 927
 928                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 929                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 930                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 931                 }
 932
 933                 free(client);
 934
 935                 if (!(reply = dbus_message_new_method_return(message)))
 936                         goto oom;
 937
 938         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 939                 FILE *f;
 940                 char *dump = NULL;
 941                 size_t size;
 942
 943                 if (!(reply = dbus_message_new_method_return(message)))
 944                         goto oom;
 945
 946                 if (!(f = open_memstream(&dump, &size)))
 947                         goto oom;
 948
 949                 manager_dump_units(m, f, NULL);
 950                 manager_dump_jobs(m, f, NULL);
 951
 952                 if (ferror(f)) {
 953                         fclose(f);
 954                         free(dump);
 955                         goto oom;
 956                 }
 957
 958                 fclose(f);
 959
 960                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 961                         free(dump);
 962                         goto oom;
 963                 }
 964
 965                 free(dump);
 966         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 967                 const char *name;
 968                 dbus_bool_t cleanup;
 969                 Snapshot *s;
 970
 971                 if (!dbus_message_get_args(
 972                                     message,
 973                                     &error,
 974                                     DBUS_TYPE_STRING, &name,
 975                                     DBUS_TYPE_BOOLEAN, &cleanup,
 976                                     DBUS_TYPE_INVALID))
 977                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 978
 979                 if (name && name[0] == 0)
 980                         name = NULL;
 981
 982                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 983                         return bus_send_error_reply(connection, message, &error, r);
 984
 985                 if (!(reply = dbus_message_new_method_return(message)))
 986                         goto oom;
 987
 988                 if (!(path = unit_dbus_path(UNIT(s))))
 989                         goto oom;
 990
 991                 if (!dbus_message_append_args(
 992                                     reply,
 993                                     DBUS_TYPE_OBJECT_PATH, &path,
 994                                     DBUS_TYPE_INVALID))
 995                         goto oom;
 996
 997         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 998                 char *introspection = NULL;
 999                 FILE *f;
1000                 Iterator i;
1001                 Unit *u;
1002                 Job *j;
1003                 const char *k;
1004                 size_t size;
1005
1006                 if (!(reply = dbus_message_new_method_return(message)))
1007                         goto oom;
1008
1009                 /* We roll our own introspection code here, instead of
1010                  * relying on bus_default_message_handler() because we
1011                  * need to generate our introspection string
1012                  * dynamically. */
1013
1014                 if (!(f = open_memstream(&introspection, &size)))
1015                         goto oom;
1016
1017                 fputs(INTROSPECTION_BEGIN, f);
1018
1019                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1020                         char *p;
1021
1022                         if (k != u->id)
1023                                 continue;
1024
1025                         if (!(p = bus_path_escape(k))) {
1026                                 fclose(f);
1027                                 free(introspection);
1028                                 goto oom;
1029                         }
1030
1031                         fprintf(f, "<node name=\"unit/%s\"/>", p);
1032                         free(p);
1033                 }
1034
1035                 HASHMAP_FOREACH(j, m->jobs, i)
1036                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
1037
1038                 fputs(INTROSPECTION_END, f);
1039
1040                 if (ferror(f)) {
1041                         fclose(f);
1042                         free(introspection);
1043                         goto oom;
1044                 }
1045
1046                 fclose(f);
1047
1048                 if (!introspection)
1049                         goto oom;
1050
1051                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
1052                         free(introspection);
1053                         goto oom;
1054                 }
1055
1056                 free(introspection);
1057
1058         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
1059
1060                 assert(!m->queued_message);
1061
1062                 /* Instead of sending the reply back right away, we
1063                  * just remember that we need to and then send it
1064                  * after the reload is finished. That way the caller
1065                  * knows when the reload finished. */
1066
1067                 if (!(m->queued_message = dbus_message_new_method_return(message)))
1068                         goto oom;
1069
1070                 m->queued_message_connection = connection;
1071                 m->exit_code = MANAGER_RELOAD;
1072
1073         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
1074
1075                 /* We don't send a reply back here, the client should
1076                  * just wait for us disconnecting. */
1077
1078                 m->exit_code = MANAGER_REEXECUTE;
1079
1080         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
1081
1082                 if (m->running_as == MANAGER_SYSTEM) {
1083                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
1084                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1085                 }
1086
1087                 if (!(reply = dbus_message_new_method_return(message)))
1088                         goto oom;
1089
1090                 m->exit_code = MANAGER_EXIT;
1091
1092         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
1093
1094                 if (m->running_as != MANAGER_SYSTEM) {
1095                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1096                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1097                 }
1098
1099                 if (!(reply = dbus_message_new_method_return(message)))
1100                         goto oom;
1101
1102                 m->exit_code = MANAGER_REBOOT;
1103
1104         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
1105
1106                 if (m->running_as != MANAGER_SYSTEM) {
1107                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1108                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1109                 }
1110
1111                 if (!(reply = dbus_message_new_method_return(message)))
1112                         goto oom;
1113
1114                 m->exit_code = MANAGER_POWEROFF;
1115
1116         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
1117
1118                 if (m->running_as != MANAGER_SYSTEM) {
1119                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
1120                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1121                 }
1122
1123                 if (!(reply = dbus_message_new_method_return(message)))
1124                         goto oom;
1125
1126                 m->exit_code = MANAGER_HALT;
1127
1128         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
1129
1130                 if (m->running_as != MANAGER_SYSTEM) {
1131                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
1132                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1133                 }
1134
1135                 if (!(reply = dbus_message_new_method_return(message)))
1136                         goto oom;
1137
1138                 m->exit_code = MANAGER_KEXEC;
1139
1140         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
1141                 char **l = NULL, **e = NULL;
1142
1143                 if ((r = bus_parse_strv(message, &l)) < 0) {
1144                         if (r == -ENOMEM)
1145                                 goto oom;
1146
1147                         return bus_send_error_reply(connection, message, NULL, r);
1148                 }
1149
1150                 e = strv_env_merge(2, m->environment, l);
1151                 strv_free(l);
1152
1153                 if (!e)
1154                         goto oom;
1155
1156                 if (!(reply = dbus_message_new_method_return(message))) {
1157                         strv_free(e);
1158                         goto oom;
1159                 }
1160
1161                 strv_free(m->environment);
1162                 m->environment = e;
1163
1164         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1165                 char **l = NULL, **e = NULL;
1166
1167                 if ((r = bus_parse_strv(message, &l)) < 0) {
1168                         if (r == -ENOMEM)
1169                                 goto oom;
1170
1171                         return bus_send_error_reply(connection, message, NULL, r);
1172                 }
1173
1174                 e = strv_env_delete(m->environment, 1, l);
1175                 strv_free(l);
1176
1177                 if (!e)
1178                         goto oom;
1179
1180                 if (!(reply = dbus_message_new_method_return(message))) {
1181                         strv_free(e);
1182                         goto oom;
1183                 }
1184
1185                 strv_free(m->environment);
1186                 m->environment = e;
1187
1188         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) {
1189                 char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL;
1190                 DBusMessageIter iter;
1191
1192                 if (!dbus_message_iter_init(message, &iter))
1193                         goto oom;
1194
1195                 r = bus_parse_strv_iter(&iter, &l_unset);
1196                 if (r < 0) {
1197                         if (r == -ENOMEM)
1198                                 goto oom;
1199
1200                         return bus_send_error_reply(connection, message, NULL, r);
1201                 }
1202
1203                 if (!dbus_message_iter_next(&iter)) {
1204                         strv_free(l_unset);
1205                         return bus_send_error_reply(connection, message, NULL, -EINVAL);
1206                 }
1207
1208                 r = bus_parse_strv_iter(&iter, &l_set);
1209                 if (r < 0) {
1210                         strv_free(l_unset);
1211                         if (r == -ENOMEM)
1212                                 goto oom;
1213
1214                         return bus_send_error_reply(connection, message, NULL, r);
1215                 }
1216
1217                 e = strv_env_delete(m->environment, 1, l_unset);
1218                 strv_free(l_unset);
1219
1220                 if (!e) {
1221                         strv_free(l_set);
1222                         goto oom;
1223                 }
1224
1225                 f = strv_env_merge(2, e, l_set);
1226                 strv_free(l_set);
1227                 strv_free(e);
1228
1229                 if (!f)
1230                         goto oom;
1231
1232                 if (!(reply = dbus_message_new_method_return(message))) {
1233                         strv_free(f);
1234                         goto oom;
1235                 }
1236
1237                 strv_free(m->environment);
1238                 m->environment = f;
1239         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnitFiles")) {
1240                 DBusMessageIter iter, sub, sub2;
1241                 Hashmap *h;
1242                 Iterator i;
1243                 UnitFileList *item;
1244
1245                 reply = dbus_message_new_method_return(message);
1246                 if (!reply)
1247                         goto oom;
1248
1249                 h = hashmap_new(string_hash_func, string_compare_func);
1250                 if (!h)
1251                         goto oom;
1252
1253                 r = unit_file_get_list(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, h);
1254                 if (r < 0) {
1255                         unit_file_list_free(h);
1256                         dbus_message_unref(reply);
1257                         return bus_send_error_reply(connection, message, NULL, r);
1258                 }
1259
1260                 dbus_message_iter_init_append(reply, &iter);
1261
1262                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ss)", &sub)) {
1263                         unit_file_list_free(h);
1264                         goto oom;
1265                 }
1266
1267                 HASHMAP_FOREACH(item, h, i) {
1268                         const char *state;
1269
1270                         state = unit_file_state_to_string(item->state);
1271                         assert(state);
1272
1273                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
1274                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &item->path) ||
1275                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
1276                             !dbus_message_iter_close_container(&sub, &sub2)) {
1277                                 unit_file_list_free(h);
1278                                 goto oom;
1279                         }
1280                 }
1281
1282                 unit_file_list_free(h);
1283
1284                 if (!dbus_message_iter_close_container(&iter, &sub))
1285                         goto oom;
1286
1287         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitFileState")) {
1288                 const char *name;
1289                 UnitFileState state;
1290                 const char *s;
1291
1292                 if (!dbus_message_get_args(
1293                                     message,
1294                                     &error,
1295                                     DBUS_TYPE_STRING, &name,
1296                                     DBUS_TYPE_INVALID))
1297                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1298
1299                 state = unit_file_get_state(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, name);
1300                 if (state < 0)
1301                         return bus_send_error_reply(connection, message, NULL, state);
1302
1303                 s = unit_file_state_to_string(state);
1304                 assert(s);
1305
1306                 reply = dbus_message_new_method_return(message);
1307                 if (!reply)
1308                         goto oom;
1309
1310                 if (!dbus_message_append_args(
1311                                     reply,
1312                                     DBUS_TYPE_STRING, &s,
1313                                     DBUS_TYPE_INVALID))
1314                         goto oom;
1315         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "EnableUnitFiles") ||
1316                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReenableUnitFiles") ||
1317                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LinkUnitFiles") ||
1318                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PresetUnitFiles") ||
1319                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "MaskUnitFiles")) {
1320
1321                 char **l = NULL;
1322                 DBusMessageIter iter;
1323                 UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
1324                 UnitFileChange *changes = NULL;
1325                 unsigned n_changes = 0;
1326                 dbus_bool_t runtime, force;
1327                 int carries_install_info = -1;
1328
1329                 if (!dbus_message_iter_init(message, &iter))
1330                         goto oom;
1331
1332                 r = bus_parse_strv_iter(&iter, &l);
1333                 if (r < 0) {
1334                         if (r == -ENOMEM)
1335                                 goto oom;
1336
1337                         return bus_send_error_reply(connection, message, NULL, r);
1338                 }
1339
1340                 if (!dbus_message_iter_next(&iter) ||
1341                     bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, true) < 0 ||
1342                     bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &force, false) < 0) {
1343                         strv_free(l);
1344                         return bus_send_error_reply(connection, message, NULL, -EIO);
1345                 }
1346
1347                 if (streq(member, "EnableUnitFiles")) {
1348                         r = unit_file_enable(scope, runtime, NULL, l, force, &changes, &n_changes);
1349                         carries_install_info = r;
1350                 } else if (streq(member, "ReenableUnitFiles")) {
1351                         r = unit_file_reenable(scope, runtime, NULL, l, force, &changes, &n_changes);
1352                         carries_install_info = r;
1353                 } else if (streq(member, "LinkUnitFiles"))
1354                         r = unit_file_link(scope, runtime, NULL, l, force, &changes, &n_changes);
1355                 else if (streq(member, "PresetUnitFiles")) {
1356                         r = unit_file_preset(scope, runtime, NULL, l, force, &changes, &n_changes);
1357                         carries_install_info = r;
1358                 } else if (streq(member, "MaskUnitFiles"))
1359                         r = unit_file_mask(scope, runtime, NULL, l, force, &changes, &n_changes);
1360                 else
1361                         assert_not_reached("Uh? Wrong method");
1362
1363                 strv_free(l);
1364                 bus_manager_send_unit_files_changed(m);
1365
1366                 if (r < 0) {
1367                         unit_file_changes_free(changes, n_changes);
1368                         return bus_send_error_reply(connection, message, NULL, r);
1369                 }
1370
1371                 reply = message_from_file_changes(message, changes, n_changes, carries_install_info);
1372                 unit_file_changes_free(changes, n_changes);
1373
1374                 if (!reply)
1375                         goto oom;
1376
1377         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "DisableUnitFiles") ||
1378                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnmaskUnitFiles")) {
1379
1380                 char **l = NULL;
1381                 DBusMessageIter iter;
1382                 UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
1383                 UnitFileChange *changes = NULL;
1384                 unsigned n_changes = 0;
1385                 dbus_bool_t runtime;
1386
1387                 if (!dbus_message_iter_init(message, &iter))
1388                         goto oom;
1389
1390                 r = bus_parse_strv_iter(&iter, &l);
1391                 if (r < 0) {
1392                         if (r == -ENOMEM)
1393                                 goto oom;
1394
1395                         return bus_send_error_reply(connection, message, NULL, r);
1396                 }
1397
1398                 if (!dbus_message_iter_next(&iter) ||
1399                     bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, false) < 0) {
1400                         strv_free(l);
1401                         return bus_send_error_reply(connection, message, NULL, -EIO);
1402                 }
1403
1404                 if (streq(member, "DisableUnitFiles"))
1405                         r = unit_file_disable(scope, runtime, NULL, l, &changes, &n_changes);
1406                 else if (streq(member, "UnmaskUnitFiles"))
1407                         r = unit_file_unmask(scope, runtime, NULL, l, &changes, &n_changes);
1408                 else
1409                         assert_not_reached("Uh? Wrong method");
1410
1411                 strv_free(l);
1412                 bus_manager_send_unit_files_changed(m);
1413
1414                 if (r < 0) {
1415                         unit_file_changes_free(changes, n_changes);
1416                         return bus_send_error_reply(connection, message, NULL, r);
1417                 }
1418
1419                 reply = message_from_file_changes(message, changes, n_changes, -1);
1420                 unit_file_changes_free(changes, n_changes);
1421
1422                 if (!reply)
1423                         goto oom;
1424
1425         } else {
1426                 const BusBoundProperties bps[] = {
1427                         { "org.freedesktop.systemd1.Manager", bus_systemd_properties, systemd_property_string },
1428                         { "org.freedesktop.systemd1.Manager", bus_manager_properties, m },
1429                         { NULL, }
1430                 };
1431                 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps);
1432         }
1433
1434         if (job_type != _JOB_TYPE_INVALID) {
1435                 const char *name, *smode, *old_name = NULL;
1436                 JobMode mode;
1437                 Job *j;
1438                 Unit *u;
1439                 bool b;
1440
1441                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1442                         b = dbus_message_get_args(
1443                                         message,
1444                                         &error,
1445                                         DBUS_TYPE_STRING, &old_name,
1446                                         DBUS_TYPE_STRING, &name,
1447                                         DBUS_TYPE_STRING, &smode,
1448                                         DBUS_TYPE_INVALID);
1449                 else
1450                         b = dbus_message_get_args(
1451                                         message,
1452                                         &error,
1453                                         DBUS_TYPE_STRING, &name,
1454                                         DBUS_TYPE_STRING, &smode,
1455                                         DBUS_TYPE_INVALID);
1456
1457                 if (!b)
1458                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1459
1460                 if (old_name)
1461                         if (!(u = manager_get_unit(m, old_name)) ||
1462                             !u->job ||
1463                             u->job->type != JOB_START) {
1464                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1465                                 return bus_send_error_reply(connection, message, &error, -ENOENT);
1466                         }
1467
1468
1469                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1470                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1471                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1472                 }
1473
1474                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1475                         return bus_send_error_reply(connection, message, &error, r);
1476
1477                 if (reload_if_possible && unit_can_reload(u)) {
1478                         if (job_type == JOB_RESTART)
1479                                 job_type = JOB_RELOAD_OR_START;
1480                         else if (job_type == JOB_TRY_RESTART)
1481                                 job_type = JOB_RELOAD;
1482                 }
1483
1484                 if ((job_type == JOB_START && u->refuse_manual_start) ||
1485                     (job_type == JOB_STOP && u->refuse_manual_stop) ||
1486                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1487                      (u->refuse_manual_start || u->refuse_manual_stop))) {
1488                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1489                         return bus_send_error_reply(connection, message, &error, -EPERM);
1490                 }
1491
1492                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1493                         return bus_send_error_reply(connection, message, &error, r);
1494
1495                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1496                         goto oom;
1497
1498                 j->bus = connection;
1499
1500                 if (!(reply = dbus_message_new_method_return(message)))
1501                         goto oom;
1502
1503                 if (!(path = job_dbus_path(j)))
1504                         goto oom;
1505
1506                 if (!dbus_message_append_args(
1507                                     reply,
1508                                     DBUS_TYPE_OBJECT_PATH, &path,
1509                                     DBUS_TYPE_INVALID))
1510                         goto oom;
1511         }
1512
1513         if (reply) {
1514                 if (!dbus_connection_send(connection, reply, NULL))
1515                         goto oom;
1516
1517                 dbus_message_unref(reply);
1518         }
1519
1520         free(path);
1521
1522         return DBUS_HANDLER_RESULT_HANDLED;
1523
1524 oom:
1525         free(path);
1526
1527         if (reply)
1528                 dbus_message_unref(reply);
1529
1530         dbus_error_free(&error);
1531
1532         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1533 }
1534
1535 const DBusObjectPathVTable bus_manager_vtable = {
1536         .message_function = bus_manager_message_handler
1537 };