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
  32 #define BUS_MANAGER_INTERFACE_BEGIN                                     \
  33         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
  34
  35 #define BUS_MANAGER_INTERFACE_METHODS                                   \
  36         "  <method name=\"GetUnit\">\n"                                 \
  37         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  38         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  39         "  </method>\n"                                                 \
  40         "  <method name=\"GetUnitByPID\">\n"                            \
  41         "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
  42         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  43         "  </method>\n"                                                 \
  44         "  <method name=\"LoadUnit\">\n"                                \
  45         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  46         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  47         "  </method>\n"                                                 \
  48         "  <method name=\"StartUnit\">\n"                               \
  49         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  50         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  51         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  52         "  </method>\n"                                                 \
  53         "  <method name=\"StartUnitReplace\">\n"                        \
  54         "   <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n"     \
  55         "   <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n"     \
  56         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  57         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  58         "  </method>\n"                                                 \
  59         "  <method name=\"StopUnit\">\n"                                \
  60         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  61         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  62         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  63         "  </method>\n"                                                 \
  64         "  <method name=\"ReloadUnit\">\n"                              \
  65         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  66         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  67         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  68         "  </method>\n"                                                 \
  69         "  <method name=\"RestartUnit\">\n"                             \
  70         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  71         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  72         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  73         "  </method>\n"                                                 \
  74         "  <method name=\"TryRestartUnit\">\n"                          \
  75         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  76         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  77         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  78         "  </method>\n"                                                 \
  79         "  <method name=\"ReloadOrRestartUnit\">\n"                     \
  80         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  81         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  82         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  83         "  </method>\n"                                                 \
  84         "  <method name=\"ReloadOrTryRestartUnit\">\n"                  \
  85         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  86         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  87         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  88         "  </method>\n"                                                 \
  89         "  <method name=\"KillUnit\">\n"                                \
  90         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  91         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
  92         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  93         "   <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n"       \
  94         "  </method>\n"                                                 \
  95         "  <method name=\"ResetFailedUnit\">\n"                         \
  96         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  97         "  </method>\n"                                                 \
  98         "  <method name=\"GetJob\">\n"                                  \
  99         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
 100         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
 101         "  </method>\n"                                                 \
 102         "  <method name=\"ClearJobs\"/>\n"                              \
 103         "  <method name=\"ResetFailed\"/>\n"                            \
 104         "  <method name=\"ListUnits\">\n"                               \
 105         "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
 106         "  </method>\n"                                                 \
 107         "  <method name=\"ListJobs\">\n"                                \
 108         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
 109         "  </method>\n"                                                 \
 110         "  <method name=\"Subscribe\"/>\n"                              \
 111         "  <method name=\"Unsubscribe\"/>\n"                            \
 112         "  <method name=\"Dump\"/>\n"                                   \
 113         "  <method name=\"CreateSnapshot\">\n"                          \
 114         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
 115         "   <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
 116         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
 117         "  </method>\n"                                                 \
 118         "  <method name=\"Reload\"/>\n"                                 \
 119         "  <method name=\"Reexecute\"/>\n"                              \
 120         "  <method name=\"Exit\"/>\n"                                   \
 121         "  <method name=\"Reboot\"/>\n"                                 \
 122         "  <method name=\"PowerOff\"/>\n"                               \
 123         "  <method name=\"Halt\"/>\n"                                   \
 124         "  <method name=\"KExec\"/>\n"                                  \
 125         "  <method name=\"SetEnvironment\">\n"                          \
 126         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 127         "  </method>\n"                                                 \
 128         "  <method name=\"UnsetEnvironment\">\n"                        \
 129         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 130         "  </method>\n"
 131
 132 #define BUS_MANAGER_INTERFACE_SIGNALS                                   \
 133         "  <signal name=\"UnitNew\">\n"                                 \
 134         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 135         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 136         "  </signal>\n"                                                 \
 137         "  <signal name=\"UnitRemoved\">\n"                             \
 138         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 139         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 140         "  </signal>\n"                                                 \
 141         "  <signal name=\"JobNew\">\n"                                  \
 142         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 143         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 144         "  </signal>\n"                                                 \
 145         "  <signal name=\"JobRemoved\">\n"                              \
 146         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 147         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 148         "   <arg name=\"result\" type=\"s\"/>\n"                        \
 149         "  </signal>"
 150
 151 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 152         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 153         "  <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
 154         "  <property name=\"Features\" type=\"s\" access=\"read\"/>\n"  \
 155         "  <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n"   \
 156         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 157         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 158         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 159         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 160         "  <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n"  \
 161         "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
 162         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 163         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 164         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 165         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 166         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 167         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 168         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 169         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 170         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 171         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 172         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 173         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 174         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 175         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 176         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 177         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 178
 179 #ifdef HAVE_SYSV_COMPAT
 180 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 181         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 182         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 183         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 184 #else
 185 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 186 #endif
 187
 188 #define BUS_MANAGER_INTERFACE_END                                       \
 189         " </interface>\n"
 190
 191 #define BUS_MANAGER_INTERFACE                                           \
 192         BUS_MANAGER_INTERFACE_BEGIN                                     \
 193         BUS_MANAGER_INTERFACE_METHODS                                   \
 194         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 195         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 196         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 197         BUS_MANAGER_INTERFACE_END
 198
 199 #define INTROSPECTION_BEGIN                                             \
 200         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 201         "<node>\n"                                                      \
 202         BUS_MANAGER_INTERFACE                                           \
 203         BUS_PROPERTIES_INTERFACE                                        \
 204         BUS_PEER_INTERFACE                                              \
 205         BUS_INTROSPECTABLE_INTERFACE
 206
 207 #define INTROSPECTION_END                                               \
 208         "</node>\n"
 209
 210 #define INTERFACES_LIST                              \
 211         BUS_GENERIC_INTERFACES_LIST                  \
 212         "org.freedesktop.systemd1.Manager\0"
 213
 214 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 215
 216 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 217 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 218
 219 static int bus_manager_append_tainted(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 220         const char *t;
 221         char buf[64] = "", *e = buf, *p = NULL;
 222
 223         assert(m);
 224         assert(i);
 225         assert(property);
 226
 227         if (m->taint_usr)
 228                 e = stpcpy(e, "usr-separate-fs ");
 229
 230         if (readlink_malloc("/etc/mtab", &p) < 0)
 231                 e = stpcpy(e, "etc-mtab-not-symlink ");
 232         else
 233                 free(p);
 234
 235         if (access("/proc/cgroups", F_OK) < 0)
 236                 e = stpcpy(e, "cgroups-missing ");
 237
 238         t = strstrip(buf);
 239
 240         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 241                 return -ENOMEM;
 242
 243         return 0;
 244 }
 245
 246 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 247         const char *t;
 248
 249         assert(m);
 250         assert(i);
 251         assert(property);
 252
 253         t = log_target_to_string(log_get_target());
 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_set_log_target(Manager *m, DBusMessageIter *i, const char *property) {
 262         const char *t;
 263
 264         assert(m);
 265         assert(i);
 266         assert(property);
 267
 268         dbus_message_iter_get_basic(i, &t);
 269
 270         return log_set_target_from_string(t);
 271 }
 272
 273 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 274         const char *t;
 275
 276         assert(m);
 277         assert(i);
 278         assert(property);
 279
 280         t = log_level_to_string(log_get_max_level());
 281
 282         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 283                 return -ENOMEM;
 284
 285         return 0;
 286 }
 287
 288 static int bus_manager_set_log_level(Manager *m, DBusMessageIter *i, const char *property) {
 289         const char *t;
 290
 291         assert(m);
 292         assert(i);
 293         assert(property);
 294
 295         dbus_message_iter_get_basic(i, &t);
 296
 297         return log_set_max_level_from_string(t);
 298 }
 299
 300 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 301         uint32_t u;
 302
 303         assert(m);
 304         assert(i);
 305         assert(property);
 306
 307         u = hashmap_size(m->units);
 308
 309         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 310                 return -ENOMEM;
 311
 312         return 0;
 313 }
 314
 315 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 316         uint32_t u;
 317
 318         assert(m);
 319         assert(i);
 320         assert(property);
 321
 322         u = hashmap_size(m->jobs);
 323
 324         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 325                 return -ENOMEM;
 326
 327         return 0;
 328 }
 329
 330 static int bus_manager_append_progress(Manager *m, DBusMessageIter *i, const char *property, void *data) {
 331         double d;
 332
 333         assert(m);
 334         assert(i);
 335         assert(property);
 336
 337         if (dual_timestamp_is_set(&m->finish_timestamp))
 338                 d = 1.0;
 339         else
 340                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 341
 342         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 343                 return -ENOMEM;
 344
 345         return 0;
 346 }
 347
 348 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 349         const char *s;
 350
 351         assert(m);
 352
 353         if ((s = dbus_message_get_sender(m)))
 354                 return s;
 355
 356         /* When the message came in from a direct connection the
 357          * message will have no sender. We fix that here. */
 358
 359         return ":no-sender";
 360 }
 361
 362 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 363         Manager *m = data;
 364
 365         const BusProperty properties[] = {
 366                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 367                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 368                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 369                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 370                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 371                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 372                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 373                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 374                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  NULL,               bus_manager_set_log_level},
 375                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  NULL,               bus_manager_set_log_target},
 376                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  NULL               },
 377                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  NULL               },
 378                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 379                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 380                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  NULL               },
 381                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 382                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 383                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 384                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 385                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 386                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 387                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 388                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 389                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 390                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 391                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 392 #ifdef HAVE_SYSV_COMPAT
 393                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 394                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 395                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 396 #endif
 397                 { NULL, NULL, NULL, NULL, NULL }
 398         };
 399
 400         int r;
 401         DBusError error;
 402         DBusMessage *reply = NULL;
 403         char * path = NULL;
 404         JobType job_type = _JOB_TYPE_INVALID;
 405         bool reload_if_possible = false;
 406
 407         assert(connection);
 408         assert(message);
 409         assert(m);
 410
 411         dbus_error_init(&error);
 412
 413         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 414                 const char *name;
 415                 Unit *u;
 416
 417                 if (!dbus_message_get_args(
 418                                     message,
 419                                     &error,
 420                                     DBUS_TYPE_STRING, &name,
 421                                     DBUS_TYPE_INVALID))
 422                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 423
 424                 if (!(u = manager_get_unit(m, name))) {
 425                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 426                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 427                 }
 428
 429                 if (!(reply = dbus_message_new_method_return(message)))
 430                         goto oom;
 431
 432                 if (!(path = unit_dbus_path(u)))
 433                         goto oom;
 434
 435                 if (!dbus_message_append_args(
 436                                     reply,
 437                                     DBUS_TYPE_OBJECT_PATH, &path,
 438                                     DBUS_TYPE_INVALID))
 439                         goto oom;
 440         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 441                 Unit *u;
 442                 uint32_t pid;
 443
 444                 if (!dbus_message_get_args(
 445                                     message,
 446                                     &error,
 447                                     DBUS_TYPE_UINT32, &pid,
 448                                     DBUS_TYPE_INVALID))
 449                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 450
 451                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 452                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 453                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 454                 }
 455
 456                 if (!(reply = dbus_message_new_method_return(message)))
 457                         goto oom;
 458
 459                 if (!(path = unit_dbus_path(u)))
 460                         goto oom;
 461
 462                 if (!dbus_message_append_args(
 463                                     reply,
 464                                     DBUS_TYPE_OBJECT_PATH, &path,
 465                                     DBUS_TYPE_INVALID))
 466                         goto oom;
 467         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 468                 const char *name;
 469                 Unit *u;
 470
 471                 if (!dbus_message_get_args(
 472                                     message,
 473                                     &error,
 474                                     DBUS_TYPE_STRING, &name,
 475                                     DBUS_TYPE_INVALID))
 476                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 477
 478                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 479                         return bus_send_error_reply(m, connection, message, &error, r);
 480
 481                 if (!(reply = dbus_message_new_method_return(message)))
 482                         goto oom;
 483
 484                 if (!(path = unit_dbus_path(u)))
 485                         goto oom;
 486
 487                 if (!dbus_message_append_args(
 488                                     reply,
 489                                     DBUS_TYPE_OBJECT_PATH, &path,
 490                                     DBUS_TYPE_INVALID))
 491                         goto oom;
 492
 493         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 494                 job_type = JOB_START;
 495         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 496                 job_type = JOB_START;
 497         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 498                 job_type = JOB_STOP;
 499         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 500                 job_type = JOB_RELOAD;
 501         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 502                 job_type = JOB_RESTART;
 503         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 504                 job_type = JOB_TRY_RESTART;
 505         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 506                 reload_if_possible = true;
 507                 job_type = JOB_RESTART;
 508         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 509                 reload_if_possible = true;
 510                 job_type = JOB_TRY_RESTART;
 511         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 512                 const char *name, *swho, *smode;
 513                 int32_t signo;
 514                 Unit *u;
 515                 KillMode mode;
 516                 KillWho who;
 517
 518                 if (!dbus_message_get_args(
 519                                     message,
 520                                     &error,
 521                                     DBUS_TYPE_STRING, &name,
 522                                     DBUS_TYPE_STRING, &swho,
 523                                     DBUS_TYPE_STRING, &smode,
 524                                     DBUS_TYPE_INT32, &signo,
 525                                     DBUS_TYPE_INVALID))
 526                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 527
 528                 if ((mode = kill_mode_from_string(smode)) < 0 ||
 529                     (who = kill_who_from_string(swho)) < 0 ||
 530                     signo <= 0 ||
 531                     signo >= _NSIG)
 532                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 533
 534                 if (!(u = manager_get_unit(m, name))) {
 535                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 536                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 537                 }
 538
 539                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 540                         return bus_send_error_reply(m, connection, message, &error, r);
 541
 542                 if (!(reply = dbus_message_new_method_return(message)))
 543                         goto oom;
 544
 545         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 546                 uint32_t id;
 547                 Job *j;
 548
 549                 if (!dbus_message_get_args(
 550                                     message,
 551                                     &error,
 552                                     DBUS_TYPE_UINT32, &id,
 553                                     DBUS_TYPE_INVALID))
 554                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 555
 556                 if (!(j = manager_get_job(m, id))) {
 557                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 558                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 559                 }
 560
 561                 if (!(reply = dbus_message_new_method_return(message)))
 562                         goto oom;
 563
 564                 if (!(path = job_dbus_path(j)))
 565                         goto oom;
 566
 567                 if (!dbus_message_append_args(
 568                                     reply,
 569                                     DBUS_TYPE_OBJECT_PATH, &path,
 570                                     DBUS_TYPE_INVALID))
 571                         goto oom;
 572
 573         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 574
 575                 manager_clear_jobs(m);
 576
 577                 if (!(reply = dbus_message_new_method_return(message)))
 578                         goto oom;
 579
 580         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 581
 582                 manager_reset_failed(m);
 583
 584                 if (!(reply = dbus_message_new_method_return(message)))
 585                         goto oom;
 586
 587         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 588                 const char *name;
 589                 Unit *u;
 590
 591                 if (!dbus_message_get_args(
 592                                     message,
 593                                     &error,
 594                                     DBUS_TYPE_STRING, &name,
 595                                     DBUS_TYPE_INVALID))
 596                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 597
 598                 if (!(u = manager_get_unit(m, name))) {
 599                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 600                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 601                 }
 602
 603                 unit_reset_failed(u);
 604
 605                 if (!(reply = dbus_message_new_method_return(message)))
 606                         goto oom;
 607
 608         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 609                 DBusMessageIter iter, sub;
 610                 Iterator i;
 611                 Unit *u;
 612                 const char *k;
 613
 614                 if (!(reply = dbus_message_new_method_return(message)))
 615                         goto oom;
 616
 617                 dbus_message_iter_init_append(reply, &iter);
 618
 619                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 620                         goto oom;
 621
 622                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 623                         char *u_path, *j_path;
 624                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 625                         DBusMessageIter sub2;
 626                         uint32_t job_id;
 627                         Unit *f;
 628
 629                         if (k != u->meta.id)
 630                                 continue;
 631
 632                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 633                                 goto oom;
 634
 635                         description = unit_description(u);
 636                         load_state = unit_load_state_to_string(u->meta.load_state);
 637                         active_state = unit_active_state_to_string(unit_active_state(u));
 638                         sub_state = unit_sub_state_to_string(u);
 639
 640                         f = unit_following(u);
 641                         following = f ? f->meta.id : "";
 642
 643                         if (!(u_path = unit_dbus_path(u)))
 644                                 goto oom;
 645
 646                         if (u->meta.job) {
 647                                 job_id = (uint32_t) u->meta.job->id;
 648
 649                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 650                                         free(u_path);
 651                                         goto oom;
 652                                 }
 653
 654                                 sjob_type = job_type_to_string(u->meta.job->type);
 655                         } else {
 656                                 job_id = 0;
 657                                 j_path = u_path;
 658                                 sjob_type = "";
 659                         }
 660
 661                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 662                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 663                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 664                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 665                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 666                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 667                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 668                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 669                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 670                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 671                                 free(u_path);
 672                                 if (u->meta.job)
 673                                         free(j_path);
 674                                 goto oom;
 675                         }
 676
 677                         free(u_path);
 678                         if (u->meta.job)
 679                                 free(j_path);
 680
 681                         if (!dbus_message_iter_close_container(&sub, &sub2))
 682                                 goto oom;
 683                 }
 684
 685                 if (!dbus_message_iter_close_container(&iter, &sub))
 686                         goto oom;
 687
 688         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 689                 DBusMessageIter iter, sub;
 690                 Iterator i;
 691                 Job *j;
 692
 693                 if (!(reply = dbus_message_new_method_return(message)))
 694                         goto oom;
 695
 696                 dbus_message_iter_init_append(reply, &iter);
 697
 698                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 699                         goto oom;
 700
 701                 HASHMAP_FOREACH(j, m->jobs, i) {
 702                         char *u_path, *j_path;
 703                         const char *state, *type;
 704                         uint32_t id;
 705                         DBusMessageIter sub2;
 706
 707                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 708                                 goto oom;
 709
 710                         id = (uint32_t) j->id;
 711                         state = job_state_to_string(j->state);
 712                         type = job_type_to_string(j->type);
 713
 714                         if (!(j_path = job_dbus_path(j)))
 715                                 goto oom;
 716
 717                         if (!(u_path = unit_dbus_path(j->unit))) {
 718                                 free(j_path);
 719                                 goto oom;
 720                         }
 721
 722                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 723                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 724                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 725                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 726                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 727                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 728                                 free(j_path);
 729                                 free(u_path);
 730                                 goto oom;
 731                         }
 732
 733                         free(j_path);
 734                         free(u_path);
 735
 736                         if (!dbus_message_iter_close_container(&sub, &sub2))
 737                                 goto oom;
 738                 }
 739
 740                 if (!dbus_message_iter_close_container(&iter, &sub))
 741                         goto oom;
 742
 743         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 744                 char *client;
 745                 Set *s;
 746
 747                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 748                         if (!(s = set_new(string_hash_func, string_compare_func)))
 749                                 goto oom;
 750
 751                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 752                                 set_free(s);
 753                                 goto oom;
 754                         }
 755                 }
 756
 757                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 758                         goto oom;
 759
 760                 if ((r = set_put(s, client)) < 0) {
 761                         free(client);
 762                         return bus_send_error_reply(m, connection, message, NULL, r);
 763                 }
 764
 765                 if (!(reply = dbus_message_new_method_return(message)))
 766                         goto oom;
 767
 768         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 769                 char *client;
 770
 771                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 772                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 773                         return bus_send_error_reply(m, connection, message, &error, -ENOENT);
 774                 }
 775
 776                 free(client);
 777
 778                 if (!(reply = dbus_message_new_method_return(message)))
 779                         goto oom;
 780
 781         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 782                 FILE *f;
 783                 char *dump = NULL;
 784                 size_t size;
 785
 786                 if (!(reply = dbus_message_new_method_return(message)))
 787                         goto oom;
 788
 789                 if (!(f = open_memstream(&dump, &size)))
 790                         goto oom;
 791
 792                 manager_dump_units(m, f, NULL);
 793                 manager_dump_jobs(m, f, NULL);
 794
 795                 if (ferror(f)) {
 796                         fclose(f);
 797                         free(dump);
 798                         goto oom;
 799                 }
 800
 801                 fclose(f);
 802
 803                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 804                         free(dump);
 805                         goto oom;
 806                 }
 807
 808                 free(dump);
 809         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 810                 const char *name;
 811                 dbus_bool_t cleanup;
 812                 Snapshot *s;
 813
 814                 if (!dbus_message_get_args(
 815                                     message,
 816                                     &error,
 817                                     DBUS_TYPE_STRING, &name,
 818                                     DBUS_TYPE_BOOLEAN, &cleanup,
 819                                     DBUS_TYPE_INVALID))
 820                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
 821
 822                 if (name && name[0] == 0)
 823                         name = NULL;
 824
 825                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 826                         return bus_send_error_reply(m, connection, message, &error, r);
 827
 828                 if (!(reply = dbus_message_new_method_return(message)))
 829                         goto oom;
 830
 831                 if (!(path = unit_dbus_path(UNIT(s))))
 832                         goto oom;
 833
 834                 if (!dbus_message_append_args(
 835                                     reply,
 836                                     DBUS_TYPE_OBJECT_PATH, &path,
 837                                     DBUS_TYPE_INVALID))
 838                         goto oom;
 839
 840         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 841                 char *introspection = NULL;
 842                 FILE *f;
 843                 Iterator i;
 844                 Unit *u;
 845                 Job *j;
 846                 const char *k;
 847                 size_t size;
 848
 849                 if (!(reply = dbus_message_new_method_return(message)))
 850                         goto oom;
 851
 852                 /* We roll our own introspection code here, instead of
 853                  * relying on bus_default_message_handler() because we
 854                  * need to generate our introspection string
 855                  * dynamically. */
 856
 857                 if (!(f = open_memstream(&introspection, &size)))
 858                         goto oom;
 859
 860                 fputs(INTROSPECTION_BEGIN, f);
 861
 862                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 863                         char *p;
 864
 865                         if (k != u->meta.id)
 866                                 continue;
 867
 868                         if (!(p = bus_path_escape(k))) {
 869                                 fclose(f);
 870                                 free(introspection);
 871                                 goto oom;
 872                         }
 873
 874                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 875                         free(p);
 876                 }
 877
 878                 HASHMAP_FOREACH(j, m->jobs, i)
 879                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 880
 881                 fputs(INTROSPECTION_END, f);
 882
 883                 if (ferror(f)) {
 884                         fclose(f);
 885                         free(introspection);
 886                         goto oom;
 887                 }
 888
 889                 fclose(f);
 890
 891                 if (!introspection)
 892                         goto oom;
 893
 894                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 895                         free(introspection);
 896                         goto oom;
 897                 }
 898
 899                 free(introspection);
 900
 901         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 902
 903                 assert(!m->queued_message);
 904
 905                 /* Instead of sending the reply back right away, we
 906                  * just remember that we need to and then send it
 907                  * after the reload is finished. That way the caller
 908                  * knows when the reload finished. */
 909
 910                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 911                         goto oom;
 912
 913                 m->queued_message_connection = connection;
 914                 m->exit_code = MANAGER_RELOAD;
 915
 916         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 917
 918                 if (!(reply = dbus_message_new_method_return(message)))
 919                         goto oom;
 920
 921                 m->exit_code = MANAGER_REEXECUTE;
 922
 923         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 924
 925                 if (m->running_as == MANAGER_SYSTEM) {
 926                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
 927                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 928                 }
 929
 930                 if (!(reply = dbus_message_new_method_return(message)))
 931                         goto oom;
 932
 933                 m->exit_code = MANAGER_EXIT;
 934
 935         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 936
 937                 if (m->running_as != MANAGER_SYSTEM) {
 938                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
 939                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 940                 }
 941
 942                 if (!(reply = dbus_message_new_method_return(message)))
 943                         goto oom;
 944
 945                 m->exit_code = MANAGER_REBOOT;
 946
 947         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 948
 949                 if (m->running_as != MANAGER_SYSTEM) {
 950                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
 951                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 952                 }
 953
 954                 if (!(reply = dbus_message_new_method_return(message)))
 955                         goto oom;
 956
 957                 m->exit_code = MANAGER_POWEROFF;
 958
 959         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 960
 961                 if (m->running_as != MANAGER_SYSTEM) {
 962                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 963                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 964                 }
 965
 966                 if (!(reply = dbus_message_new_method_return(message)))
 967                         goto oom;
 968
 969                 m->exit_code = MANAGER_HALT;
 970
 971         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
 972
 973                 if (m->running_as != MANAGER_SYSTEM) {
 974                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
 975                         return bus_send_error_reply(m, connection, message, &error, -ENOTSUP);
 976                 }
 977
 978                 if (!(reply = dbus_message_new_method_return(message)))
 979                         goto oom;
 980
 981                 m->exit_code = MANAGER_KEXEC;
 982
 983         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 984                 char **l = NULL, **e = NULL;
 985
 986                 if ((r = bus_parse_strv(message, &l)) < 0) {
 987                         if (r == -ENOMEM)
 988                                 goto oom;
 989
 990                         return bus_send_error_reply(m, connection, message, NULL, r);
 991                 }
 992
 993                 e = strv_env_merge(2, m->environment, l);
 994                 strv_free(l);
 995
 996                 if (!e)
 997                         goto oom;
 998
 999                 if (!(reply = dbus_message_new_method_return(message))) {
1000                         strv_free(e);
1001                         goto oom;
1002                 }
1003
1004                 strv_free(m->environment);
1005                 m->environment = e;
1006
1007         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1008                 char **l = NULL, **e = NULL;
1009
1010                 if ((r = bus_parse_strv(message, &l)) < 0) {
1011                         if (r == -ENOMEM)
1012                                 goto oom;
1013
1014                         return bus_send_error_reply(m, connection, message, NULL, r);
1015                 }
1016
1017                 e = strv_env_delete(m->environment, 1, l);
1018                 strv_free(l);
1019
1020                 if (!e)
1021                         goto oom;
1022
1023                 if (!(reply = dbus_message_new_method_return(message))) {
1024                         strv_free(e);
1025                         goto oom;
1026                 }
1027
1028                 strv_free(m->environment);
1029                 m->environment = e;
1030
1031         } else
1032                 return bus_default_message_handler(m, connection, message, NULL, INTERFACES_LIST, properties);
1033
1034         if (job_type != _JOB_TYPE_INVALID) {
1035                 const char *name, *smode, *old_name = NULL;
1036                 JobMode mode;
1037                 Job *j;
1038                 Unit *u;
1039                 bool b;
1040
1041                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1042                         b = dbus_message_get_args(
1043                                         message,
1044                                         &error,
1045                                         DBUS_TYPE_STRING, &old_name,
1046                                         DBUS_TYPE_STRING, &name,
1047                                         DBUS_TYPE_STRING, &smode,
1048                                         DBUS_TYPE_INVALID);
1049                 else
1050                         b = dbus_message_get_args(
1051                                         message,
1052                                         &error,
1053                                         DBUS_TYPE_STRING, &name,
1054                                         DBUS_TYPE_STRING, &smode,
1055                                         DBUS_TYPE_INVALID);
1056
1057                 if (!b)
1058                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1059
1060                 if (old_name)
1061                         if (!(u = manager_get_unit(m, old_name)) ||
1062                             !u->meta.job ||
1063                             u->meta.job->type != JOB_START) {
1064                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1065                                 return bus_send_error_reply(m, connection, message, &error, -ENOENT);
1066                         }
1067
1068
1069                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1070                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1071                         return bus_send_error_reply(m, connection, message, &error, -EINVAL);
1072                 }
1073
1074                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1075                         return bus_send_error_reply(m, connection, message, &error, r);
1076
1077                 if (reload_if_possible && unit_can_reload(u)) {
1078                         if (job_type == JOB_RESTART)
1079                                 job_type = JOB_RELOAD_OR_START;
1080                         else if (job_type == JOB_TRY_RESTART)
1081                                 job_type = JOB_RELOAD;
1082                 }
1083
1084                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1085                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1086                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1087                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1088                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1089                         return bus_send_error_reply(m, connection, message, &error, -EPERM);
1090                 }
1091
1092                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1093                         return bus_send_error_reply(m, connection, message, &error, r);
1094
1095                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1096                         goto oom;
1097
1098                 j->bus = connection;
1099
1100                 if (!(reply = dbus_message_new_method_return(message)))
1101                         goto oom;
1102
1103                 if (!(path = job_dbus_path(j)))
1104                         goto oom;
1105
1106                 if (!dbus_message_append_args(
1107                                     reply,
1108                                     DBUS_TYPE_OBJECT_PATH, &path,
1109                                     DBUS_TYPE_INVALID))
1110                         goto oom;
1111         }
1112
1113         if (reply) {
1114                 if (!dbus_connection_send(connection, reply, NULL))
1115                         goto oom;
1116
1117                 dbus_message_unref(reply);
1118         }
1119
1120         free(path);
1121
1122         return DBUS_HANDLER_RESULT_HANDLED;
1123
1124 oom:
1125         free(path);
1126
1127         if (reply)
1128                 dbus_message_unref(reply);
1129
1130         dbus_error_free(&error);
1131
1132         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1133 }
1134
1135 const DBusObjectPathVTable bus_manager_vtable = {
1136         .message_function = bus_manager_message_handler
1137 };