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\" directrion=\"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\" directrion=\"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\" directrion=\"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                 e = 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         assert(changes);
 439
 440         reply = dbus_message_new_method_return(m);
 441         if (!reply)
 442                 return NULL;
 443
 444         dbus_message_iter_init_append(reply, &iter);
 445
 446         if (carries_install_info >= 0) {
 447                 dbus_bool_t b;
 448
 449                 b = carries_install_info;
 450                 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b))
 451                         goto oom;
 452         }
 453
 454         if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sss)", &sub))
 455                 goto oom;
 456
 457         for (i = 0; i < n_changes; i++) {
 458                 const char *type, *path, *source;
 459
 460                 type = unit_file_change_type_to_string(changes[i].type);
 461                 path = strempty(changes[i].path);
 462                 source = strempty(changes[i].source);
 463
 464                 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
 465                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 466                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &path) ||
 467                     !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &source) ||
 468                     !dbus_message_iter_close_container(&sub, &sub2))
 469                         goto oom;
 470         }
 471
 472         if (!dbus_message_iter_close_container(&iter, &sub))
 473                 goto oom;
 474
 475         return reply;
 476
 477 oom:
 478         dbus_message_unref(reply);
 479         return NULL;
 480 }
 481
 482 static int bus_manager_send_unit_files_changed(Manager *m) {
 483         DBusMessage *s;
 484         int r;
 485
 486         s = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
 487         if (!s)
 488                 return -ENOMEM;
 489
 490         r = bus_broadcast(m, s);
 491         dbus_message_unref(s);
 492
 493         return r;
 494 }
 495
 496 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 497         Manager *m = data;
 498
 499         const BusProperty properties[] = {
 500                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 501                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 502                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 503                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 504                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 505                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 506                 { "org.freedesktop.systemd1.Manager", "InitRDTimestampMonotonic", bus_property_append_uint64, "t", &m->initrd_timestamp.monotonic },
 507                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 508                 { "org.freedesktop.systemd1.Manager", "StartupTimestampMonotonic", bus_property_append_uint64, "t", &m->startup_timestamp.monotonic },
 509                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 510                 { "org.freedesktop.systemd1.Manager", "FinishTimestampMonotonic", bus_property_append_uint64, "t",&m->finish_timestamp.monotonic },
 511                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  m, bus_manager_set_log_level },
 512                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  m, bus_manager_set_log_target },
 513                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  m                  },
 514                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  m                  },
 515                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 516                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 517                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  m                  },
 518                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 519                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 520                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 521                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 522                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 523                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 524                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 525                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 526                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 527                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 528                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 529 #ifdef HAVE_SYSV_COMPAT
 530                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 531                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 532                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 533 #endif
 534                 { NULL, NULL, NULL, NULL, NULL }
 535         };
 536
 537         int r;
 538         DBusError error;
 539         DBusMessage *reply = NULL;
 540         char * path = NULL;
 541         JobType job_type = _JOB_TYPE_INVALID;
 542         bool reload_if_possible = false;
 543         const char *member;
 544
 545         assert(connection);
 546         assert(message);
 547         assert(m);
 548
 549         dbus_error_init(&error);
 550
 551         member = dbus_message_get_member(message);
 552
 553         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 554                 const char *name;
 555                 Unit *u;
 556
 557                 if (!dbus_message_get_args(
 558                                     message,
 559                                     &error,
 560                                     DBUS_TYPE_STRING, &name,
 561                                     DBUS_TYPE_INVALID))
 562                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 563
 564                 if (!(u = manager_get_unit(m, name))) {
 565                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 566                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 567                 }
 568
 569                 if (!(reply = dbus_message_new_method_return(message)))
 570                         goto oom;
 571
 572                 if (!(path = unit_dbus_path(u)))
 573                         goto oom;
 574
 575                 if (!dbus_message_append_args(
 576                                     reply,
 577                                     DBUS_TYPE_OBJECT_PATH, &path,
 578                                     DBUS_TYPE_INVALID))
 579                         goto oom;
 580         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 581                 Unit *u;
 582                 uint32_t pid;
 583
 584                 if (!dbus_message_get_args(
 585                                     message,
 586                                     &error,
 587                                     DBUS_TYPE_UINT32, &pid,
 588                                     DBUS_TYPE_INVALID))
 589                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 590
 591                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 592                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 593                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 594                 }
 595
 596                 if (!(reply = dbus_message_new_method_return(message)))
 597                         goto oom;
 598
 599                 if (!(path = unit_dbus_path(u)))
 600                         goto oom;
 601
 602                 if (!dbus_message_append_args(
 603                                     reply,
 604                                     DBUS_TYPE_OBJECT_PATH, &path,
 605                                     DBUS_TYPE_INVALID))
 606                         goto oom;
 607         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 608                 const char *name;
 609                 Unit *u;
 610
 611                 if (!dbus_message_get_args(
 612                                     message,
 613                                     &error,
 614                                     DBUS_TYPE_STRING, &name,
 615                                     DBUS_TYPE_INVALID))
 616                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 617
 618                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 619                         return bus_send_error_reply(connection, message, &error, r);
 620
 621                 if (!(reply = dbus_message_new_method_return(message)))
 622                         goto oom;
 623
 624                 if (!(path = unit_dbus_path(u)))
 625                         goto oom;
 626
 627                 if (!dbus_message_append_args(
 628                                     reply,
 629                                     DBUS_TYPE_OBJECT_PATH, &path,
 630                                     DBUS_TYPE_INVALID))
 631                         goto oom;
 632
 633         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 634                 job_type = JOB_START;
 635         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 636                 job_type = JOB_START;
 637         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 638                 job_type = JOB_STOP;
 639         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 640                 job_type = JOB_RELOAD;
 641         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 642                 job_type = JOB_RESTART;
 643         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 644                 job_type = JOB_TRY_RESTART;
 645         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 646                 reload_if_possible = true;
 647                 job_type = JOB_RESTART;
 648         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 649                 reload_if_possible = true;
 650                 job_type = JOB_TRY_RESTART;
 651         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 652                 const char *name, *swho, *smode;
 653                 int32_t signo;
 654                 Unit *u;
 655                 KillMode mode;
 656                 KillWho who;
 657
 658                 if (!dbus_message_get_args(
 659                                     message,
 660                                     &error,
 661                                     DBUS_TYPE_STRING, &name,
 662                                     DBUS_TYPE_STRING, &swho,
 663                                     DBUS_TYPE_STRING, &smode,
 664                                     DBUS_TYPE_INT32, &signo,
 665                                     DBUS_TYPE_INVALID))
 666                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 667
 668                 if (isempty(swho))
 669                         who = KILL_ALL;
 670                 else {
 671                         who = kill_who_from_string(swho);
 672                         if (who < 0)
 673                                 return bus_send_error_reply(connection, message, &error, -EINVAL);
 674                 }
 675
 676                 if (isempty(smode))
 677                         mode = KILL_CONTROL_GROUP;
 678                 else {
 679                         mode = kill_mode_from_string(smode);
 680                         if (mode < 0)
 681                                 return bus_send_error_reply(connection, message, &error, -EINVAL);
 682                 }
 683
 684                 if (signo <= 0 || signo >= _NSIG)
 685                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 686
 687                 if (!(u = manager_get_unit(m, name))) {
 688                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 689                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 690                 }
 691
 692                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 693                         return bus_send_error_reply(connection, message, &error, r);
 694
 695                 if (!(reply = dbus_message_new_method_return(message)))
 696                         goto oom;
 697
 698         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 699                 uint32_t id;
 700                 Job *j;
 701
 702                 if (!dbus_message_get_args(
 703                                     message,
 704                                     &error,
 705                                     DBUS_TYPE_UINT32, &id,
 706                                     DBUS_TYPE_INVALID))
 707                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 708
 709                 if (!(j = manager_get_job(m, id))) {
 710                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 711                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 712                 }
 713
 714                 if (!(reply = dbus_message_new_method_return(message)))
 715                         goto oom;
 716
 717                 if (!(path = job_dbus_path(j)))
 718                         goto oom;
 719
 720                 if (!dbus_message_append_args(
 721                                     reply,
 722                                     DBUS_TYPE_OBJECT_PATH, &path,
 723                                     DBUS_TYPE_INVALID))
 724                         goto oom;
 725
 726         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 727
 728                 manager_clear_jobs(m);
 729
 730                 if (!(reply = dbus_message_new_method_return(message)))
 731                         goto oom;
 732
 733         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 734
 735                 manager_reset_failed(m);
 736
 737                 if (!(reply = dbus_message_new_method_return(message)))
 738                         goto oom;
 739
 740         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 741                 const char *name;
 742                 Unit *u;
 743
 744                 if (!dbus_message_get_args(
 745                                     message,
 746                                     &error,
 747                                     DBUS_TYPE_STRING, &name,
 748                                     DBUS_TYPE_INVALID))
 749                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 750
 751                 if (!(u = manager_get_unit(m, name))) {
 752                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 753                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 754                 }
 755
 756                 unit_reset_failed(u);
 757
 758                 if (!(reply = dbus_message_new_method_return(message)))
 759                         goto oom;
 760
 761         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 762                 DBusMessageIter iter, sub;
 763                 Iterator i;
 764                 Unit *u;
 765                 const char *k;
 766
 767                 if (!(reply = dbus_message_new_method_return(message)))
 768                         goto oom;
 769
 770                 dbus_message_iter_init_append(reply, &iter);
 771
 772                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 773                         goto oom;
 774
 775                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 776                         char *u_path, *j_path;
 777                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 778                         DBusMessageIter sub2;
 779                         uint32_t job_id;
 780                         Unit *f;
 781
 782                         if (k != u->meta.id)
 783                                 continue;
 784
 785                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 786                                 goto oom;
 787
 788                         description = unit_description(u);
 789                         load_state = unit_load_state_to_string(u->meta.load_state);
 790                         active_state = unit_active_state_to_string(unit_active_state(u));
 791                         sub_state = unit_sub_state_to_string(u);
 792
 793                         f = unit_following(u);
 794                         following = f ? f->meta.id : "";
 795
 796                         if (!(u_path = unit_dbus_path(u)))
 797                                 goto oom;
 798
 799                         if (u->meta.job) {
 800                                 job_id = (uint32_t) u->meta.job->id;
 801
 802                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 803                                         free(u_path);
 804                                         goto oom;
 805                                 }
 806
 807                                 sjob_type = job_type_to_string(u->meta.job->type);
 808                         } else {
 809                                 job_id = 0;
 810                                 j_path = u_path;
 811                                 sjob_type = "";
 812                         }
 813
 814                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 815                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 816                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 817                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 818                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 819                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 820                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 821                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 822                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 823                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 824                                 free(u_path);
 825                                 if (u->meta.job)
 826                                         free(j_path);
 827                                 goto oom;
 828                         }
 829
 830                         free(u_path);
 831                         if (u->meta.job)
 832                                 free(j_path);
 833
 834                         if (!dbus_message_iter_close_container(&sub, &sub2))
 835                                 goto oom;
 836                 }
 837
 838                 if (!dbus_message_iter_close_container(&iter, &sub))
 839                         goto oom;
 840
 841         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 842                 DBusMessageIter iter, sub;
 843                 Iterator i;
 844                 Job *j;
 845
 846                 if (!(reply = dbus_message_new_method_return(message)))
 847                         goto oom;
 848
 849                 dbus_message_iter_init_append(reply, &iter);
 850
 851                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 852                         goto oom;
 853
 854                 HASHMAP_FOREACH(j, m->jobs, i) {
 855                         char *u_path, *j_path;
 856                         const char *state, *type;
 857                         uint32_t id;
 858                         DBusMessageIter sub2;
 859
 860                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 861                                 goto oom;
 862
 863                         id = (uint32_t) j->id;
 864                         state = job_state_to_string(j->state);
 865                         type = job_type_to_string(j->type);
 866
 867                         if (!(j_path = job_dbus_path(j)))
 868                                 goto oom;
 869
 870                         if (!(u_path = unit_dbus_path(j->unit))) {
 871                                 free(j_path);
 872                                 goto oom;
 873                         }
 874
 875                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 876                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 877                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 878                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 879                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 880                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 881                                 free(j_path);
 882                                 free(u_path);
 883                                 goto oom;
 884                         }
 885
 886                         free(j_path);
 887                         free(u_path);
 888
 889                         if (!dbus_message_iter_close_container(&sub, &sub2))
 890                                 goto oom;
 891                 }
 892
 893                 if (!dbus_message_iter_close_container(&iter, &sub))
 894                         goto oom;
 895
 896         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 897                 char *client;
 898                 Set *s;
 899
 900                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 901                         if (!(s = set_new(string_hash_func, string_compare_func)))
 902                                 goto oom;
 903
 904                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 905                                 set_free(s);
 906                                 goto oom;
 907                         }
 908                 }
 909
 910                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 911                         goto oom;
 912
 913                 if ((r = set_put(s, client)) < 0) {
 914                         free(client);
 915                         return bus_send_error_reply(connection, message, NULL, r);
 916                 }
 917
 918                 if (!(reply = dbus_message_new_method_return(message)))
 919                         goto oom;
 920
 921         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 922                 char *client;
 923
 924                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 925                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 926                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 927                 }
 928
 929                 free(client);
 930
 931                 if (!(reply = dbus_message_new_method_return(message)))
 932                         goto oom;
 933
 934         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 935                 FILE *f;
 936                 char *dump = NULL;
 937                 size_t size;
 938
 939                 if (!(reply = dbus_message_new_method_return(message)))
 940                         goto oom;
 941
 942                 if (!(f = open_memstream(&dump, &size)))
 943                         goto oom;
 944
 945                 manager_dump_units(m, f, NULL);
 946                 manager_dump_jobs(m, f, NULL);
 947
 948                 if (ferror(f)) {
 949                         fclose(f);
 950                         free(dump);
 951                         goto oom;
 952                 }
 953
 954                 fclose(f);
 955
 956                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 957                         free(dump);
 958                         goto oom;
 959                 }
 960
 961                 free(dump);
 962         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 963                 const char *name;
 964                 dbus_bool_t cleanup;
 965                 Snapshot *s;
 966
 967                 if (!dbus_message_get_args(
 968                                     message,
 969                                     &error,
 970                                     DBUS_TYPE_STRING, &name,
 971                                     DBUS_TYPE_BOOLEAN, &cleanup,
 972                                     DBUS_TYPE_INVALID))
 973                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 974
 975                 if (name && name[0] == 0)
 976                         name = NULL;
 977
 978                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 979                         return bus_send_error_reply(connection, message, &error, r);
 980
 981                 if (!(reply = dbus_message_new_method_return(message)))
 982                         goto oom;
 983
 984                 if (!(path = unit_dbus_path(UNIT(s))))
 985                         goto oom;
 986
 987                 if (!dbus_message_append_args(
 988                                     reply,
 989                                     DBUS_TYPE_OBJECT_PATH, &path,
 990                                     DBUS_TYPE_INVALID))
 991                         goto oom;
 992
 993         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 994                 char *introspection = NULL;
 995                 FILE *f;
 996                 Iterator i;
 997                 Unit *u;
 998                 Job *j;
 999                 const char *k;
1000                 size_t size;
1001
1002                 if (!(reply = dbus_message_new_method_return(message)))
1003                         goto oom;
1004
1005                 /* We roll our own introspection code here, instead of
1006                  * relying on bus_default_message_handler() because we
1007                  * need to generate our introspection string
1008                  * dynamically. */
1009
1010                 if (!(f = open_memstream(&introspection, &size)))
1011                         goto oom;
1012
1013                 fputs(INTROSPECTION_BEGIN, f);
1014
1015                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1016                         char *p;
1017
1018                         if (k != u->meta.id)
1019                                 continue;
1020
1021                         if (!(p = bus_path_escape(k))) {
1022                                 fclose(f);
1023                                 free(introspection);
1024                                 goto oom;
1025                         }
1026
1027                         fprintf(f, "<node name=\"unit/%s\"/>", p);
1028                         free(p);
1029                 }
1030
1031                 HASHMAP_FOREACH(j, m->jobs, i)
1032                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
1033
1034                 fputs(INTROSPECTION_END, f);
1035
1036                 if (ferror(f)) {
1037                         fclose(f);
1038                         free(introspection);
1039                         goto oom;
1040                 }
1041
1042                 fclose(f);
1043
1044                 if (!introspection)
1045                         goto oom;
1046
1047                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
1048                         free(introspection);
1049                         goto oom;
1050                 }
1051
1052                 free(introspection);
1053
1054         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
1055
1056                 assert(!m->queued_message);
1057
1058                 /* Instead of sending the reply back right away, we
1059                  * just remember that we need to and then send it
1060                  * after the reload is finished. That way the caller
1061                  * knows when the reload finished. */
1062
1063                 if (!(m->queued_message = dbus_message_new_method_return(message)))
1064                         goto oom;
1065
1066                 m->queued_message_connection = connection;
1067                 m->exit_code = MANAGER_RELOAD;
1068
1069         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
1070
1071                 /* We don't send a reply back here, the client should
1072                  * just wait for us disconnecting. */
1073
1074                 m->exit_code = MANAGER_REEXECUTE;
1075
1076         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
1077
1078                 if (m->running_as == MANAGER_SYSTEM) {
1079                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
1080                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1081                 }
1082
1083                 if (!(reply = dbus_message_new_method_return(message)))
1084                         goto oom;
1085
1086                 m->exit_code = MANAGER_EXIT;
1087
1088         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
1089
1090                 if (m->running_as != MANAGER_SYSTEM) {
1091                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1092                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1093                 }
1094
1095                 if (!(reply = dbus_message_new_method_return(message)))
1096                         goto oom;
1097
1098                 m->exit_code = MANAGER_REBOOT;
1099
1100         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
1101
1102                 if (m->running_as != MANAGER_SYSTEM) {
1103                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1104                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1105                 }
1106
1107                 if (!(reply = dbus_message_new_method_return(message)))
1108                         goto oom;
1109
1110                 m->exit_code = MANAGER_POWEROFF;
1111
1112         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
1113
1114                 if (m->running_as != MANAGER_SYSTEM) {
1115                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
1116                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1117                 }
1118
1119                 if (!(reply = dbus_message_new_method_return(message)))
1120                         goto oom;
1121
1122                 m->exit_code = MANAGER_HALT;
1123
1124         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
1125
1126                 if (m->running_as != MANAGER_SYSTEM) {
1127                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
1128                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1129                 }
1130
1131                 if (!(reply = dbus_message_new_method_return(message)))
1132                         goto oom;
1133
1134                 m->exit_code = MANAGER_KEXEC;
1135
1136         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
1137                 char **l = NULL, **e = NULL;
1138
1139                 if ((r = bus_parse_strv(message, &l)) < 0) {
1140                         if (r == -ENOMEM)
1141                                 goto oom;
1142
1143                         return bus_send_error_reply(connection, message, NULL, r);
1144                 }
1145
1146                 e = strv_env_merge(2, m->environment, l);
1147                 strv_free(l);
1148
1149                 if (!e)
1150                         goto oom;
1151
1152                 if (!(reply = dbus_message_new_method_return(message))) {
1153                         strv_free(e);
1154                         goto oom;
1155                 }
1156
1157                 strv_free(m->environment);
1158                 m->environment = e;
1159
1160         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1161                 char **l = NULL, **e = NULL;
1162
1163                 if ((r = bus_parse_strv(message, &l)) < 0) {
1164                         if (r == -ENOMEM)
1165                                 goto oom;
1166
1167                         return bus_send_error_reply(connection, message, NULL, r);
1168                 }
1169
1170                 e = strv_env_delete(m->environment, 1, l);
1171                 strv_free(l);
1172
1173                 if (!e)
1174                         goto oom;
1175
1176                 if (!(reply = dbus_message_new_method_return(message))) {
1177                         strv_free(e);
1178                         goto oom;
1179                 }
1180
1181                 strv_free(m->environment);
1182                 m->environment = e;
1183
1184         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) {
1185                 char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL;
1186                 DBusMessageIter iter;
1187
1188                 if (!dbus_message_iter_init(message, &iter))
1189                         goto oom;
1190
1191                 r = bus_parse_strv_iter(&iter, &l_unset);
1192                 if (r < 0) {
1193                         if (r == -ENOMEM)
1194                                 goto oom;
1195
1196                         return bus_send_error_reply(connection, message, NULL, r);
1197                 }
1198
1199                 if (!dbus_message_iter_next(&iter)) {
1200                         strv_free(l_unset);
1201                         return bus_send_error_reply(connection, message, NULL, -EINVAL);
1202                 }
1203
1204                 r = bus_parse_strv_iter(&iter, &l_set);
1205                 if (r < 0) {
1206                         strv_free(l_unset);
1207                         if (r == -ENOMEM)
1208                                 goto oom;
1209
1210                         return bus_send_error_reply(connection, message, NULL, r);
1211                 }
1212
1213                 e = strv_env_delete(m->environment, 1, l_unset);
1214                 strv_free(l_unset);
1215
1216                 if (!e) {
1217                         strv_free(l_set);
1218                         goto oom;
1219                 }
1220
1221                 f = strv_env_merge(2, e, l_set);
1222                 strv_free(l_set);
1223                 strv_free(e);
1224
1225                 if (!f)
1226                         goto oom;
1227
1228                 if (!(reply = dbus_message_new_method_return(message))) {
1229                         strv_free(f);
1230                         goto oom;
1231                 }
1232
1233                 strv_free(m->environment);
1234                 m->environment = f;
1235         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnitFiles")) {
1236                 DBusMessageIter iter, sub, sub2;
1237                 Hashmap *h;
1238                 Iterator i;
1239                 UnitFileList *item;
1240
1241                 reply = dbus_message_new_method_return(message);
1242                 if (!reply)
1243                         goto oom;
1244
1245                 h = hashmap_new(string_hash_func, string_compare_func);
1246                 if (!h)
1247                         goto oom;
1248
1249                 r = unit_file_get_list(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, h);
1250                 if (r < 0) {
1251                         unit_file_list_free(h);
1252                         dbus_message_unref(reply);
1253                         return bus_send_error_reply(connection, message, NULL, r);
1254                 }
1255
1256                 dbus_message_iter_init_append(reply, &iter);
1257
1258                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ss)", &sub)) {
1259                         unit_file_list_free(h);
1260                         goto oom;
1261                 }
1262
1263                 HASHMAP_FOREACH(item, h, i) {
1264                         const char *state;
1265
1266                         state = unit_file_state_to_string(item->state);
1267                         assert(state);
1268
1269                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
1270                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &item->path) ||
1271                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
1272                             !dbus_message_iter_close_container(&sub, &sub2)) {
1273                                 unit_file_list_free(h);
1274                                 goto oom;
1275                         }
1276                 }
1277
1278                 unit_file_list_free(h);
1279
1280                 if (!dbus_message_iter_close_container(&iter, &sub))
1281                         goto oom;
1282
1283         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitFileState")) {
1284                 const char *name;
1285                 UnitFileState state;
1286                 const char *s;
1287
1288                 if (!dbus_message_get_args(
1289                                     message,
1290                                     &error,
1291                                     DBUS_TYPE_STRING, &name,
1292                                     DBUS_TYPE_INVALID))
1293                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1294
1295                 state = unit_file_get_state(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, name);
1296                 if (state < 0)
1297                         return bus_send_error_reply(connection, message, NULL, state);
1298
1299                 s = unit_file_state_to_string(state);
1300                 assert(s);
1301
1302                 reply = dbus_message_new_method_return(message);
1303                 if (!reply)
1304                         goto oom;
1305
1306                 if (!dbus_message_append_args(
1307                                     reply,
1308                                     DBUS_TYPE_STRING, &s,
1309                                     DBUS_TYPE_INVALID))
1310                         goto oom;
1311         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "EnableUnitFiles") ||
1312                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReenableUnitFiles") ||
1313                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LinkUnitFiles") ||
1314                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PresetUnitFiles") ||
1315                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "MaskUnitFiles")) {
1316
1317                 char **l = NULL;
1318                 DBusMessageIter iter;
1319                 UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
1320                 UnitFileChange *changes = NULL;
1321                 unsigned n_changes = 0;
1322                 dbus_bool_t runtime, force;
1323                 bool carries_install_info = -1;
1324
1325                 if (!dbus_message_iter_init(message, &iter))
1326                         goto oom;
1327
1328                 r = bus_parse_strv_iter(&iter, &l);
1329                 if (r < 0) {
1330                         if (r == -ENOMEM)
1331                                 goto oom;
1332
1333                         return bus_send_error_reply(connection, message, NULL, r);
1334                 }
1335
1336                 if (!dbus_message_iter_next(&iter) ||
1337                     bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, true) < 0 ||
1338                     bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &force, false) < 0) {
1339                         strv_free(l);
1340                         return bus_send_error_reply(connection, message, NULL, -EIO);
1341                 }
1342
1343                 if (streq(member, "EnableUnitFiles")) {
1344                         r = unit_file_enable(scope, runtime, NULL, l, force, &changes, &n_changes);
1345                         carries_install_info = r;
1346                 } else if (streq(member, "ReenableUnitFiles")) {
1347                         r = unit_file_reenable(scope, runtime, NULL, l, force, &changes, &n_changes);
1348                         carries_install_info = r;
1349                 } else if (streq(member, "LinkUnitFiles"))
1350                         r = unit_file_link(scope, runtime, NULL, l, force, &changes, &n_changes);
1351                 else if (streq(member, "PresetUnitFiles")) {
1352                         r = unit_file_preset(scope, runtime, NULL, l, force, &changes, &n_changes);
1353                         carries_install_info = r;
1354                 } else if (streq(member, "MaskUnitFiles"))
1355                         r = unit_file_mask(scope, runtime, NULL, l, force, &changes, &n_changes);
1356                 else
1357                         assert_not_reached("Uh? Wrong method");
1358
1359                 strv_free(l);
1360                 bus_manager_send_unit_files_changed(m);
1361
1362                 if (r < 0) {
1363                         unit_file_changes_free(changes, n_changes);
1364                         return bus_send_error_reply(connection, message, NULL, r);
1365                 }
1366
1367                 reply = message_from_file_changes(message, changes, n_changes, carries_install_info);
1368                 unit_file_changes_free(changes, n_changes);
1369
1370                 if (!reply)
1371                         goto oom;
1372
1373         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "DisableUnitFiles") ||
1374                    dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnmaskUnitFiles")) {
1375
1376                 char **l = NULL;
1377                 DBusMessageIter iter;
1378                 UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
1379                 UnitFileChange *changes = NULL;
1380                 unsigned n_changes = 0;
1381                 dbus_bool_t runtime;
1382
1383                 if (!dbus_message_iter_init(message, &iter))
1384                         goto oom;
1385
1386                 r = bus_parse_strv_iter(&iter, &l);
1387                 if (r < 0) {
1388                         if (r == -ENOMEM)
1389                                 goto oom;
1390
1391                         return bus_send_error_reply(connection, message, NULL, r);
1392                 }
1393
1394                 if (!dbus_message_iter_next(&iter) ||
1395                     bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, false) < 0) {
1396                         strv_free(l);
1397                         return bus_send_error_reply(connection, message, NULL, -EIO);
1398                 }
1399
1400                 if (streq(member, "DisableUnitFiles"))
1401                         r = unit_file_disable(scope, runtime, NULL, l, &changes, &n_changes);
1402                 else if (streq(member, "UnmaskUnitFiles"))
1403                         r = unit_file_unmask(scope, runtime, NULL, l, &changes, &n_changes);
1404                 else
1405                         assert_not_reached("Uh? Wrong method");
1406
1407                 strv_free(l);
1408                 bus_manager_send_unit_files_changed(m);
1409
1410                 if (r < 0) {
1411                         unit_file_changes_free(changes, n_changes);
1412                         return bus_send_error_reply(connection, message, NULL, r);
1413                 }
1414
1415                 reply = message_from_file_changes(message, changes, n_changes, -1);
1416                 unit_file_changes_free(changes, n_changes);
1417
1418                 if (!reply)
1419                         goto oom;
1420
1421         } else
1422                 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
1423
1424         if (job_type != _JOB_TYPE_INVALID) {
1425                 const char *name, *smode, *old_name = NULL;
1426                 JobMode mode;
1427                 Job *j;
1428                 Unit *u;
1429                 bool b;
1430
1431                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1432                         b = dbus_message_get_args(
1433                                         message,
1434                                         &error,
1435                                         DBUS_TYPE_STRING, &old_name,
1436                                         DBUS_TYPE_STRING, &name,
1437                                         DBUS_TYPE_STRING, &smode,
1438                                         DBUS_TYPE_INVALID);
1439                 else
1440                         b = dbus_message_get_args(
1441                                         message,
1442                                         &error,
1443                                         DBUS_TYPE_STRING, &name,
1444                                         DBUS_TYPE_STRING, &smode,
1445                                         DBUS_TYPE_INVALID);
1446
1447                 if (!b)
1448                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1449
1450                 if (old_name)
1451                         if (!(u = manager_get_unit(m, old_name)) ||
1452                             !u->meta.job ||
1453                             u->meta.job->type != JOB_START) {
1454                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1455                                 return bus_send_error_reply(connection, message, &error, -ENOENT);
1456                         }
1457
1458
1459                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1460                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1461                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1462                 }
1463
1464                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1465                         return bus_send_error_reply(connection, message, &error, r);
1466
1467                 if (reload_if_possible && unit_can_reload(u)) {
1468                         if (job_type == JOB_RESTART)
1469                                 job_type = JOB_RELOAD_OR_START;
1470                         else if (job_type == JOB_TRY_RESTART)
1471                                 job_type = JOB_RELOAD;
1472                 }
1473
1474                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1475                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1476                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1477                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1478                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1479                         return bus_send_error_reply(connection, message, &error, -EPERM);
1480                 }
1481
1482                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1483                         return bus_send_error_reply(connection, message, &error, r);
1484
1485                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1486                         goto oom;
1487
1488                 j->bus = connection;
1489
1490                 if (!(reply = dbus_message_new_method_return(message)))
1491                         goto oom;
1492
1493                 if (!(path = job_dbus_path(j)))
1494                         goto oom;
1495
1496                 if (!dbus_message_append_args(
1497                                     reply,
1498                                     DBUS_TYPE_OBJECT_PATH, &path,
1499                                     DBUS_TYPE_INVALID))
1500                         goto oom;
1501         }
1502
1503         if (reply) {
1504                 if (!dbus_connection_send(connection, reply, NULL))
1505                         goto oom;
1506
1507                 dbus_message_unref(reply);
1508         }
1509
1510         free(path);
1511
1512         return DBUS_HANDLER_RESULT_HANDLED;
1513
1514 oom:
1515         free(path);
1516
1517         if (reply)
1518                 dbus_message_unref(reply);
1519
1520         dbus_error_free(&error);
1521
1522         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1523 }
1524
1525 const DBusObjectPathVTable bus_manager_vtable = {
1526         .message_function = bus_manager_message_handler
1527 };