src/dbus-manager.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23 #include <unistd.h>
  24
  25 #include "dbus.h"
  26 #include "log.h"
  27 #include "dbus-manager.h"
  28 #include "strv.h"
  29 #include "bus-errors.h"
  30 #include "build.h"
  31 #include "dbus-common.h"
  32
  33 #define BUS_MANAGER_INTERFACE_BEGIN                                     \
  34         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
  35
  36 #define BUS_MANAGER_INTERFACE_METHODS                                   \
  37         "  <method name=\"GetUnit\">\n"                                 \
  38         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  39         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  40         "  </method>\n"                                                 \
  41         "  <method name=\"GetUnitByPID\">\n"                            \
  42         "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
  43         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  44         "  </method>\n"                                                 \
  45         "  <method name=\"LoadUnit\">\n"                                \
  46         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  47         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  48         "  </method>\n"                                                 \
  49         "  <method name=\"StartUnit\">\n"                               \
  50         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  51         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  52         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  53         "  </method>\n"                                                 \
  54         "  <method name=\"StartUnitReplace\">\n"                        \
  55         "   <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n"     \
  56         "   <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n"     \
  57         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  58         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  59         "  </method>\n"                                                 \
  60         "  <method name=\"StopUnit\">\n"                                \
  61         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  62         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  63         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  64         "  </method>\n"                                                 \
  65         "  <method name=\"ReloadUnit\">\n"                              \
  66         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  67         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  68         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  69         "  </method>\n"                                                 \
  70         "  <method name=\"RestartUnit\">\n"                             \
  71         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  72         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  73         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  74         "  </method>\n"                                                 \
  75         "  <method name=\"TryRestartUnit\">\n"                          \
  76         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  77         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  78         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  79         "  </method>\n"                                                 \
  80         "  <method name=\"ReloadOrRestartUnit\">\n"                     \
  81         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  82         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  83         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  84         "  </method>\n"                                                 \
  85         "  <method name=\"ReloadOrTryRestartUnit\">\n"                  \
  86         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  87         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  88         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  89         "  </method>\n"                                                 \
  90         "  <method name=\"KillUnit\">\n"                                \
  91         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  92         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
  93         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  94         "   <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n"       \
  95         "  </method>\n"                                                 \
  96         "  <method name=\"ResetFailedUnit\">\n"                         \
  97         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  98         "  </method>\n"                                                 \
  99         "  <method name=\"GetJob\">\n"                                  \
 100         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
 101         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
 102         "  </method>\n"                                                 \
 103         "  <method name=\"ClearJobs\"/>\n"                              \
 104         "  <method name=\"ResetFailed\"/>\n"                            \
 105         "  <method name=\"ListUnits\">\n"                               \
 106         "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
 107         "  </method>\n"                                                 \
 108         "  <method name=\"ListJobs\">\n"                                \
 109         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
 110         "  </method>\n"                                                 \
 111         "  <method name=\"Subscribe\"/>\n"                              \
 112         "  <method name=\"Unsubscribe\"/>\n"                            \
 113         "  <method name=\"Dump\"/>\n"                                   \
 114         "  <method name=\"CreateSnapshot\">\n"                          \
 115         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
 116         "   <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
 117         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
 118         "  </method>\n"                                                 \
 119         "  <method name=\"Reload\"/>\n"                                 \
 120         "  <method name=\"Reexecute\"/>\n"                              \
 121         "  <method name=\"Exit\"/>\n"                                   \
 122         "  <method name=\"Reboot\"/>\n"                                 \
 123         "  <method name=\"PowerOff\"/>\n"                               \
 124         "  <method name=\"Halt\"/>\n"                                   \
 125         "  <method name=\"KExec\"/>\n"                                  \
 126         "  <method name=\"SetEnvironment\">\n"                          \
 127         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 128         "  </method>\n"                                                 \
 129         "  <method name=\"UnsetEnvironment\">\n"                        \
 130         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 131         "  </method>\n"                                                 \
 132         "  <method name=\"UnsetAndSetEnvironment\">\n"                  \
 133         "   <arg name=\"unset\" type=\"as\" direction=\"in\"/>\n"       \
 134         "   <arg name=\"set\" type=\"as\" direction=\"in\"/>\n"         \
 135         "  </method>\n"
 136
 137 #define BUS_MANAGER_INTERFACE_SIGNALS                                   \
 138         "  <signal name=\"UnitNew\">\n"                                 \
 139         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 140         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 141         "  </signal>\n"                                                 \
 142         "  <signal name=\"UnitRemoved\">\n"                             \
 143         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 144         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 145         "  </signal>\n"                                                 \
 146         "  <signal name=\"JobNew\">\n"                                  \
 147         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 148         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 149         "  </signal>\n"                                                 \
 150         "  <signal name=\"JobRemoved\">\n"                              \
 151         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 152         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 153         "   <arg name=\"result\" type=\"s\"/>\n"                        \
 154         "  </signal>"                                                   \
 155         "  <signal name=\"StartupFinished\">\n"                         \
 156         "   <arg name=\"kernel\" type=\"t\"/>\n"                        \
 157         "   <arg name=\"initrd\" type=\"t\"/>\n"                        \
 158         "   <arg name=\"userspace\" type=\"t\"/>\n"                     \
 159         "   <arg name=\"total\" type=\"t\"/>\n"                         \
 160         "  </signal>"
 161
 162 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 163         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 164         "  <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
 165         "  <property name=\"Features\" type=\"s\" access=\"read\"/>\n"  \
 166         "  <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n"   \
 167         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 168         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 169         "  <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 170         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 171         "  <property name=\"StartupTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 172         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 173         "  <property name=\"FinishTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 174         "  <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n"  \
 175         "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
 176         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 177         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 178         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 179         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 180         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 181         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 182         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 183         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 184         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 185         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 186         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 187         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 188         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 189         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 190         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 191         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 192
 193 #ifdef HAVE_SYSV_COMPAT
 194 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 195         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 196         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 197         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 198 #else
 199 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 200 #endif
 201
 202 #define BUS_MANAGER_INTERFACE_END                                       \
 203         " </interface>\n"
 204
 205 #define BUS_MANAGER_INTERFACE                                           \
 206         BUS_MANAGER_INTERFACE_BEGIN                                     \
 207         BUS_MANAGER_INTERFACE_METHODS                                   \
 208         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 209         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 210         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 211         BUS_MANAGER_INTERFACE_END
 212
 213 #define INTROSPECTION_BEGIN                                             \
 214         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 215         "<node>\n"                                                      \
 216         BUS_MANAGER_INTERFACE                                           \
 217         BUS_PROPERTIES_INTERFACE                                        \
 218         BUS_PEER_INTERFACE                                              \
 219         BUS_INTROSPECTABLE_INTERFACE
 220
 221 #define INTROSPECTION_END                                               \
 222         "</node>\n"
 223
 224 #define INTERFACES_LIST                              \
 225         BUS_GENERIC_INTERFACES_LIST                  \
 226         "org.freedesktop.systemd1.Manager\0"
 227
 228 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 229
 230 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 231 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 232
 233 static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
 234         const char *t;
 235         Manager *m = data;
 236         char buf[LINE_MAX] = "", *e = buf, *p = NULL;
 237
 238         assert(i);
 239         assert(property);
 240         assert(m);
 241
 242         if (m->taint_usr)
 243                 e = stpcpy(e, "usr-separate-fs ");
 244
 245         if (readlink_malloc("/etc/mtab", &p) < 0)
 246                 e = stpcpy(e, "etc-mtab-not-symlink ");
 247         else
 248                 free(p);
 249
 250         if (access("/proc/cgroups", F_OK) < 0)
 251                 e = stpcpy(e, "cgroups-missing ");
 252
 253         t = strstrip(buf);
 254
 255         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 256                 return -ENOMEM;
 257
 258         return 0;
 259 }
 260
 261 static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
 262         const char *t;
 263
 264         assert(i);
 265         assert(property);
 266
 267         t = log_target_to_string(log_get_target());
 268
 269         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 270                 return -ENOMEM;
 271
 272         return 0;
 273 }
 274
 275 static int bus_manager_set_log_target(DBusMessageIter *i, const char *property) {
 276         const char *t;
 277
 278         assert(i);
 279         assert(property);
 280
 281         dbus_message_iter_get_basic(i, &t);
 282
 283         return log_set_target_from_string(t);
 284 }
 285
 286 static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
 287         const char *t;
 288
 289         assert(i);
 290         assert(property);
 291
 292         t = log_level_to_string(log_get_max_level());
 293
 294         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 295                 return -ENOMEM;
 296
 297         return 0;
 298 }
 299
 300 static int bus_manager_set_log_level(DBusMessageIter *i, const char *property) {
 301         const char *t;
 302
 303         assert(i);
 304         assert(property);
 305
 306         dbus_message_iter_get_basic(i, &t);
 307
 308         return log_set_max_level_from_string(t);
 309 }
 310
 311 static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
 312         Manager *m = data;
 313         uint32_t u;
 314
 315         assert(i);
 316         assert(property);
 317         assert(m);
 318
 319         u = hashmap_size(m->units);
 320
 321         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 322                 return -ENOMEM;
 323
 324         return 0;
 325 }
 326
 327 static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
 328         Manager *m = data;
 329         uint32_t u;
 330
 331         assert(i);
 332         assert(property);
 333         assert(m);
 334
 335         u = hashmap_size(m->jobs);
 336
 337         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 338                 return -ENOMEM;
 339
 340         return 0;
 341 }
 342
 343 static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
 344         double d;
 345         Manager *m = data;
 346
 347         assert(i);
 348         assert(property);
 349         assert(m);
 350
 351         if (dual_timestamp_is_set(&m->finish_timestamp))
 352                 d = 1.0;
 353         else
 354                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 355
 356         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 357                 return -ENOMEM;
 358
 359         return 0;
 360 }
 361
 362 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 363         const char *s;
 364
 365         assert(m);
 366
 367         if ((s = dbus_message_get_sender(m)))
 368                 return s;
 369
 370         /* When the message came in from a direct connection the
 371          * message will have no sender. We fix that here. */
 372
 373         return ":no-sender";
 374 }
 375
 376 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 377         Manager *m = data;
 378
 379         const BusProperty properties[] = {
 380                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 381                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 382                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 383                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 384                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 385                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 386                 { "org.freedesktop.systemd1.Manager", "InitRDTimestampMonotonic", bus_property_append_uint64, "t", &m->initrd_timestamp.monotonic },
 387                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 388                 { "org.freedesktop.systemd1.Manager", "StartupTimestampMonotonic", bus_property_append_uint64, "t", &m->startup_timestamp.monotonic },
 389                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 390                 { "org.freedesktop.systemd1.Manager", "FinishTimestampMonotonic", bus_property_append_uint64, "t",&m->finish_timestamp.monotonic },
 391                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  m, bus_manager_set_log_level },
 392                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  m, bus_manager_set_log_target },
 393                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  m                  },
 394                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  m                  },
 395                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 396                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 397                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  m                  },
 398                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 399                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 400                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 401                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 402                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 403                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 404                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 405                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 406                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 407                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 408                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 409 #ifdef HAVE_SYSV_COMPAT
 410                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 411                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 412                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 413 #endif
 414                 { NULL, NULL, NULL, NULL, NULL }
 415         };
 416
 417         int r;
 418         DBusError error;
 419         DBusMessage *reply = NULL;
 420         char * path = NULL;
 421         JobType job_type = _JOB_TYPE_INVALID;
 422         bool reload_if_possible = false;
 423
 424         assert(connection);
 425         assert(message);
 426         assert(m);
 427
 428         dbus_error_init(&error);
 429
 430         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 431                 const char *name;
 432                 Unit *u;
 433
 434                 if (!dbus_message_get_args(
 435                                     message,
 436                                     &error,
 437                                     DBUS_TYPE_STRING, &name,
 438                                     DBUS_TYPE_INVALID))
 439                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 440
 441                 if (!(u = manager_get_unit(m, name))) {
 442                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 443                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 444                 }
 445
 446                 if (!(reply = dbus_message_new_method_return(message)))
 447                         goto oom;
 448
 449                 if (!(path = unit_dbus_path(u)))
 450                         goto oom;
 451
 452                 if (!dbus_message_append_args(
 453                                     reply,
 454                                     DBUS_TYPE_OBJECT_PATH, &path,
 455                                     DBUS_TYPE_INVALID))
 456                         goto oom;
 457         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 458                 Unit *u;
 459                 uint32_t pid;
 460
 461                 if (!dbus_message_get_args(
 462                                     message,
 463                                     &error,
 464                                     DBUS_TYPE_UINT32, &pid,
 465                                     DBUS_TYPE_INVALID))
 466                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 467
 468                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 469                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 470                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 471                 }
 472
 473                 if (!(reply = dbus_message_new_method_return(message)))
 474                         goto oom;
 475
 476                 if (!(path = unit_dbus_path(u)))
 477                         goto oom;
 478
 479                 if (!dbus_message_append_args(
 480                                     reply,
 481                                     DBUS_TYPE_OBJECT_PATH, &path,
 482                                     DBUS_TYPE_INVALID))
 483                         goto oom;
 484         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 485                 const char *name;
 486                 Unit *u;
 487
 488                 if (!dbus_message_get_args(
 489                                     message,
 490                                     &error,
 491                                     DBUS_TYPE_STRING, &name,
 492                                     DBUS_TYPE_INVALID))
 493                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 494
 495                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 496                         return bus_send_error_reply(connection, message, &error, r);
 497
 498                 if (!(reply = dbus_message_new_method_return(message)))
 499                         goto oom;
 500
 501                 if (!(path = unit_dbus_path(u)))
 502                         goto oom;
 503
 504                 if (!dbus_message_append_args(
 505                                     reply,
 506                                     DBUS_TYPE_OBJECT_PATH, &path,
 507                                     DBUS_TYPE_INVALID))
 508                         goto oom;
 509
 510         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 511                 job_type = JOB_START;
 512         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 513                 job_type = JOB_START;
 514         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 515                 job_type = JOB_STOP;
 516         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 517                 job_type = JOB_RELOAD;
 518         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 519                 job_type = JOB_RESTART;
 520         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 521                 job_type = JOB_TRY_RESTART;
 522         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 523                 reload_if_possible = true;
 524                 job_type = JOB_RESTART;
 525         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 526                 reload_if_possible = true;
 527                 job_type = JOB_TRY_RESTART;
 528         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 529                 const char *name, *swho, *smode;
 530                 int32_t signo;
 531                 Unit *u;
 532                 KillMode mode;
 533                 KillWho who;
 534
 535                 if (!dbus_message_get_args(
 536                                     message,
 537                                     &error,
 538                                     DBUS_TYPE_STRING, &name,
 539                                     DBUS_TYPE_STRING, &swho,
 540                                     DBUS_TYPE_STRING, &smode,
 541                                     DBUS_TYPE_INT32, &signo,
 542                                     DBUS_TYPE_INVALID))
 543                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 544
 545                 if (isempty(swho))
 546                         who = KILL_ALL;
 547                 else {
 548                         who = kill_who_from_string(swho);
 549                         if (who < 0)
 550                                 return bus_send_error_reply(connection, message, &error, -EINVAL);
 551                 }
 552
 553                 if (isempty(smode))
 554                         mode = KILL_CONTROL_GROUP;
 555                 else {
 556                         mode = kill_mode_from_string(smode);
 557                         if (mode < 0)
 558                                 return bus_send_error_reply(connection, message, &error, -EINVAL);
 559                 }
 560
 561                 if (signo <= 0 || signo >= _NSIG)
 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 ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 570                         return bus_send_error_reply(connection, message, &error, r);
 571
 572                 if (!(reply = dbus_message_new_method_return(message)))
 573                         goto oom;
 574
 575         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 576                 uint32_t id;
 577                 Job *j;
 578
 579                 if (!dbus_message_get_args(
 580                                     message,
 581                                     &error,
 582                                     DBUS_TYPE_UINT32, &id,
 583                                     DBUS_TYPE_INVALID))
 584                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 585
 586                 if (!(j = manager_get_job(m, id))) {
 587                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 588                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 589                 }
 590
 591                 if (!(reply = dbus_message_new_method_return(message)))
 592                         goto oom;
 593
 594                 if (!(path = job_dbus_path(j)))
 595                         goto oom;
 596
 597                 if (!dbus_message_append_args(
 598                                     reply,
 599                                     DBUS_TYPE_OBJECT_PATH, &path,
 600                                     DBUS_TYPE_INVALID))
 601                         goto oom;
 602
 603         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 604
 605                 manager_clear_jobs(m);
 606
 607                 if (!(reply = dbus_message_new_method_return(message)))
 608                         goto oom;
 609
 610         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 611
 612                 manager_reset_failed(m);
 613
 614                 if (!(reply = dbus_message_new_method_return(message)))
 615                         goto oom;
 616
 617         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 618                 const char *name;
 619                 Unit *u;
 620
 621                 if (!dbus_message_get_args(
 622                                     message,
 623                                     &error,
 624                                     DBUS_TYPE_STRING, &name,
 625                                     DBUS_TYPE_INVALID))
 626                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 627
 628                 if (!(u = manager_get_unit(m, name))) {
 629                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 630                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 631                 }
 632
 633                 unit_reset_failed(u);
 634
 635                 if (!(reply = dbus_message_new_method_return(message)))
 636                         goto oom;
 637
 638         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 639                 DBusMessageIter iter, sub;
 640                 Iterator i;
 641                 Unit *u;
 642                 const char *k;
 643
 644                 if (!(reply = dbus_message_new_method_return(message)))
 645                         goto oom;
 646
 647                 dbus_message_iter_init_append(reply, &iter);
 648
 649                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 650                         goto oom;
 651
 652                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 653                         char *u_path, *j_path;
 654                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 655                         DBusMessageIter sub2;
 656                         uint32_t job_id;
 657                         Unit *f;
 658
 659                         if (k != u->meta.id)
 660                                 continue;
 661
 662                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 663                                 goto oom;
 664
 665                         description = unit_description(u);
 666                         load_state = unit_load_state_to_string(u->meta.load_state);
 667                         active_state = unit_active_state_to_string(unit_active_state(u));
 668                         sub_state = unit_sub_state_to_string(u);
 669
 670                         f = unit_following(u);
 671                         following = f ? f->meta.id : "";
 672
 673                         if (!(u_path = unit_dbus_path(u)))
 674                                 goto oom;
 675
 676                         if (u->meta.job) {
 677                                 job_id = (uint32_t) u->meta.job->id;
 678
 679                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 680                                         free(u_path);
 681                                         goto oom;
 682                                 }
 683
 684                                 sjob_type = job_type_to_string(u->meta.job->type);
 685                         } else {
 686                                 job_id = 0;
 687                                 j_path = u_path;
 688                                 sjob_type = "";
 689                         }
 690
 691                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 692                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 693                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 694                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 695                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 696                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 697                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 698                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 699                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 700                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 701                                 free(u_path);
 702                                 if (u->meta.job)
 703                                         free(j_path);
 704                                 goto oom;
 705                         }
 706
 707                         free(u_path);
 708                         if (u->meta.job)
 709                                 free(j_path);
 710
 711                         if (!dbus_message_iter_close_container(&sub, &sub2))
 712                                 goto oom;
 713                 }
 714
 715                 if (!dbus_message_iter_close_container(&iter, &sub))
 716                         goto oom;
 717
 718         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 719                 DBusMessageIter iter, sub;
 720                 Iterator i;
 721                 Job *j;
 722
 723                 if (!(reply = dbus_message_new_method_return(message)))
 724                         goto oom;
 725
 726                 dbus_message_iter_init_append(reply, &iter);
 727
 728                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 729                         goto oom;
 730
 731                 HASHMAP_FOREACH(j, m->jobs, i) {
 732                         char *u_path, *j_path;
 733                         const char *state, *type;
 734                         uint32_t id;
 735                         DBusMessageIter sub2;
 736
 737                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 738                                 goto oom;
 739
 740                         id = (uint32_t) j->id;
 741                         state = job_state_to_string(j->state);
 742                         type = job_type_to_string(j->type);
 743
 744                         if (!(j_path = job_dbus_path(j)))
 745                                 goto oom;
 746
 747                         if (!(u_path = unit_dbus_path(j->unit))) {
 748                                 free(j_path);
 749                                 goto oom;
 750                         }
 751
 752                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 753                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 754                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 755                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 756                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 757                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 758                                 free(j_path);
 759                                 free(u_path);
 760                                 goto oom;
 761                         }
 762
 763                         free(j_path);
 764                         free(u_path);
 765
 766                         if (!dbus_message_iter_close_container(&sub, &sub2))
 767                                 goto oom;
 768                 }
 769
 770                 if (!dbus_message_iter_close_container(&iter, &sub))
 771                         goto oom;
 772
 773         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 774                 char *client;
 775                 Set *s;
 776
 777                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 778                         if (!(s = set_new(string_hash_func, string_compare_func)))
 779                                 goto oom;
 780
 781                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 782                                 set_free(s);
 783                                 goto oom;
 784                         }
 785                 }
 786
 787                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 788                         goto oom;
 789
 790                 if ((r = set_put(s, client)) < 0) {
 791                         free(client);
 792                         return bus_send_error_reply(connection, message, NULL, r);
 793                 }
 794
 795                 if (!(reply = dbus_message_new_method_return(message)))
 796                         goto oom;
 797
 798         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 799                 char *client;
 800
 801                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 802                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 803                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 804                 }
 805
 806                 free(client);
 807
 808                 if (!(reply = dbus_message_new_method_return(message)))
 809                         goto oom;
 810
 811         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 812                 FILE *f;
 813                 char *dump = NULL;
 814                 size_t size;
 815
 816                 if (!(reply = dbus_message_new_method_return(message)))
 817                         goto oom;
 818
 819                 if (!(f = open_memstream(&dump, &size)))
 820                         goto oom;
 821
 822                 manager_dump_units(m, f, NULL);
 823                 manager_dump_jobs(m, f, NULL);
 824
 825                 if (ferror(f)) {
 826                         fclose(f);
 827                         free(dump);
 828                         goto oom;
 829                 }
 830
 831                 fclose(f);
 832
 833                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 834                         free(dump);
 835                         goto oom;
 836                 }
 837
 838                 free(dump);
 839         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 840                 const char *name;
 841                 dbus_bool_t cleanup;
 842                 Snapshot *s;
 843
 844                 if (!dbus_message_get_args(
 845                                     message,
 846                                     &error,
 847                                     DBUS_TYPE_STRING, &name,
 848                                     DBUS_TYPE_BOOLEAN, &cleanup,
 849                                     DBUS_TYPE_INVALID))
 850                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 851
 852                 if (name && name[0] == 0)
 853                         name = NULL;
 854
 855                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 856                         return bus_send_error_reply(connection, message, &error, r);
 857
 858                 if (!(reply = dbus_message_new_method_return(message)))
 859                         goto oom;
 860
 861                 if (!(path = unit_dbus_path(UNIT(s))))
 862                         goto oom;
 863
 864                 if (!dbus_message_append_args(
 865                                     reply,
 866                                     DBUS_TYPE_OBJECT_PATH, &path,
 867                                     DBUS_TYPE_INVALID))
 868                         goto oom;
 869
 870         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 871                 char *introspection = NULL;
 872                 FILE *f;
 873                 Iterator i;
 874                 Unit *u;
 875                 Job *j;
 876                 const char *k;
 877                 size_t size;
 878
 879                 if (!(reply = dbus_message_new_method_return(message)))
 880                         goto oom;
 881
 882                 /* We roll our own introspection code here, instead of
 883                  * relying on bus_default_message_handler() because we
 884                  * need to generate our introspection string
 885                  * dynamically. */
 886
 887                 if (!(f = open_memstream(&introspection, &size)))
 888                         goto oom;
 889
 890                 fputs(INTROSPECTION_BEGIN, f);
 891
 892                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 893                         char *p;
 894
 895                         if (k != u->meta.id)
 896                                 continue;
 897
 898                         if (!(p = bus_path_escape(k))) {
 899                                 fclose(f);
 900                                 free(introspection);
 901                                 goto oom;
 902                         }
 903
 904                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 905                         free(p);
 906                 }
 907
 908                 HASHMAP_FOREACH(j, m->jobs, i)
 909                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 910
 911                 fputs(INTROSPECTION_END, f);
 912
 913                 if (ferror(f)) {
 914                         fclose(f);
 915                         free(introspection);
 916                         goto oom;
 917                 }
 918
 919                 fclose(f);
 920
 921                 if (!introspection)
 922                         goto oom;
 923
 924                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 925                         free(introspection);
 926                         goto oom;
 927                 }
 928
 929                 free(introspection);
 930
 931         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 932
 933                 assert(!m->queued_message);
 934
 935                 /* Instead of sending the reply back right away, we
 936                  * just remember that we need to and then send it
 937                  * after the reload is finished. That way the caller
 938                  * knows when the reload finished. */
 939
 940                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 941                         goto oom;
 942
 943                 m->queued_message_connection = connection;
 944                 m->exit_code = MANAGER_RELOAD;
 945
 946         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 947
 948                 /* We don't send a reply back here, the client should
 949                  * just wait for us disconnecting. */
 950
 951                 m->exit_code = MANAGER_REEXECUTE;
 952
 953         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 954
 955                 if (m->running_as == MANAGER_SYSTEM) {
 956                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
 957                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 958                 }
 959
 960                 if (!(reply = dbus_message_new_method_return(message)))
 961                         goto oom;
 962
 963                 m->exit_code = MANAGER_EXIT;
 964
 965         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 966
 967                 if (m->running_as != MANAGER_SYSTEM) {
 968                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
 969                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 970                 }
 971
 972                 if (!(reply = dbus_message_new_method_return(message)))
 973                         goto oom;
 974
 975                 m->exit_code = MANAGER_REBOOT;
 976
 977         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 978
 979                 if (m->running_as != MANAGER_SYSTEM) {
 980                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
 981                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 982                 }
 983
 984                 if (!(reply = dbus_message_new_method_return(message)))
 985                         goto oom;
 986
 987                 m->exit_code = MANAGER_POWEROFF;
 988
 989         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 990
 991                 if (m->running_as != MANAGER_SYSTEM) {
 992                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 993                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 994                 }
 995
 996                 if (!(reply = dbus_message_new_method_return(message)))
 997                         goto oom;
 998
 999                 m->exit_code = MANAGER_HALT;
1000
1001         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
1002
1003                 if (m->running_as != MANAGER_SYSTEM) {
1004                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
1005                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
1006                 }
1007
1008                 if (!(reply = dbus_message_new_method_return(message)))
1009                         goto oom;
1010
1011                 m->exit_code = MANAGER_KEXEC;
1012
1013         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
1014                 char **l = NULL, **e = NULL;
1015
1016                 if ((r = bus_parse_strv(message, &l)) < 0) {
1017                         if (r == -ENOMEM)
1018                                 goto oom;
1019
1020                         return bus_send_error_reply(connection, message, NULL, r);
1021                 }
1022
1023                 e = strv_env_merge(2, m->environment, l);
1024                 strv_free(l);
1025
1026                 if (!e)
1027                         goto oom;
1028
1029                 if (!(reply = dbus_message_new_method_return(message))) {
1030                         strv_free(e);
1031                         goto oom;
1032                 }
1033
1034                 strv_free(m->environment);
1035                 m->environment = e;
1036
1037         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1038                 char **l = NULL, **e = NULL;
1039
1040                 if ((r = bus_parse_strv(message, &l)) < 0) {
1041                         if (r == -ENOMEM)
1042                                 goto oom;
1043
1044                         return bus_send_error_reply(connection, message, NULL, r);
1045                 }
1046
1047                 e = strv_env_delete(m->environment, 1, l);
1048                 strv_free(l);
1049
1050                 if (!e)
1051                         goto oom;
1052
1053                 if (!(reply = dbus_message_new_method_return(message))) {
1054                         strv_free(e);
1055                         goto oom;
1056                 }
1057
1058                 strv_free(m->environment);
1059                 m->environment = e;
1060
1061         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) {
1062                 char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL;
1063                 DBusMessageIter iter;
1064
1065                 if (!dbus_message_iter_init(message, &iter))
1066                         return bus_send_error_reply(connection, message, NULL, -EINVAL);
1067
1068                 r = bus_parse_strv_iter(&iter, &l_unset);
1069                 if (r < 0) {
1070                         if (r == -ENOMEM)
1071                                 goto oom;
1072
1073                         return bus_send_error_reply(connection, message, NULL, r);
1074                 }
1075
1076                 if (!dbus_message_iter_next(&iter)) {
1077                         strv_free(l_unset);
1078                         return bus_send_error_reply(connection, message, NULL, -EINVAL);
1079                 }
1080
1081                 r = bus_parse_strv_iter(&iter, &l_set);
1082                 if (r < 0) {
1083                         strv_free(l_unset);
1084                         if (r == -ENOMEM)
1085                                 goto oom;
1086
1087                         return bus_send_error_reply(connection, message, NULL, r);
1088                 }
1089
1090                 e = strv_env_delete(m->environment, 1, l_unset);
1091                 strv_free(l_unset);
1092
1093                 if (!e) {
1094                         strv_free(l_set);
1095                         goto oom;
1096                 }
1097
1098                 f = strv_env_merge(2, e, l_set);
1099                 strv_free(l_set);
1100                 strv_free(e);
1101
1102                 if (!f)
1103                         goto oom;
1104
1105                 if (!(reply = dbus_message_new_method_return(message))) {
1106                         strv_free(f);
1107                         goto oom;
1108                 }
1109
1110                 strv_free(m->environment);
1111                 m->environment = f;
1112
1113         } else
1114                 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
1115
1116         if (job_type != _JOB_TYPE_INVALID) {
1117                 const char *name, *smode, *old_name = NULL;
1118                 JobMode mode;
1119                 Job *j;
1120                 Unit *u;
1121                 bool b;
1122
1123                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1124                         b = dbus_message_get_args(
1125                                         message,
1126                                         &error,
1127                                         DBUS_TYPE_STRING, &old_name,
1128                                         DBUS_TYPE_STRING, &name,
1129                                         DBUS_TYPE_STRING, &smode,
1130                                         DBUS_TYPE_INVALID);
1131                 else
1132                         b = dbus_message_get_args(
1133                                         message,
1134                                         &error,
1135                                         DBUS_TYPE_STRING, &name,
1136                                         DBUS_TYPE_STRING, &smode,
1137                                         DBUS_TYPE_INVALID);
1138
1139                 if (!b)
1140                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1141
1142                 if (old_name)
1143                         if (!(u = manager_get_unit(m, old_name)) ||
1144                             !u->meta.job ||
1145                             u->meta.job->type != JOB_START) {
1146                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1147                                 return bus_send_error_reply(connection, message, &error, -ENOENT);
1148                         }
1149
1150
1151                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1152                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1153                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1154                 }
1155
1156                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1157                         return bus_send_error_reply(connection, message, &error, r);
1158
1159                 if (reload_if_possible && unit_can_reload(u)) {
1160                         if (job_type == JOB_RESTART)
1161                                 job_type = JOB_RELOAD_OR_START;
1162                         else if (job_type == JOB_TRY_RESTART)
1163                                 job_type = JOB_RELOAD;
1164                 }
1165
1166                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1167                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1168                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1169                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1170                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1171                         return bus_send_error_reply(connection, message, &error, -EPERM);
1172                 }
1173
1174                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1175                         return bus_send_error_reply(connection, message, &error, r);
1176
1177                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1178                         goto oom;
1179
1180                 j->bus = connection;
1181
1182                 if (!(reply = dbus_message_new_method_return(message)))
1183                         goto oom;
1184
1185                 if (!(path = job_dbus_path(j)))
1186                         goto oom;
1187
1188                 if (!dbus_message_append_args(
1189                                     reply,
1190                                     DBUS_TYPE_OBJECT_PATH, &path,
1191                                     DBUS_TYPE_INVALID))
1192                         goto oom;
1193         }
1194
1195         if (reply) {
1196                 if (!dbus_connection_send(connection, reply, NULL))
1197                         goto oom;
1198
1199                 dbus_message_unref(reply);
1200         }
1201
1202         free(path);
1203
1204         return DBUS_HANDLER_RESULT_HANDLED;
1205
1206 oom:
1207         free(path);
1208
1209         if (reply)
1210                 dbus_message_unref(reply);
1211
1212         dbus_error_free(&error);
1213
1214         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1215 }
1216
1217 const DBusObjectPathVTable bus_manager_vtable = {
1218         .message_function = bus_manager_message_handler
1219 };