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