src/service.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   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 <signal.h>
  24 #include <dirent.h>
  25 #include <unistd.h>
  26
  27 #include "unit.h"
  28 #include "service.h"
  29 #include "load-fragment.h"
  30 #include "load-dropin.h"
  31 #include "log.h"
  32 #include "strv.h"
  33 #include "unit-name.h"
  34 #include "dbus-service.h"
  35 #include "special.h"
  36 #include "bus-errors.h"
  37
  38 #define COMMENTS "#;\n"
  39 #define NEWLINES "\n\r"
  40
  41 typedef enum RunlevelType {
  42         RUNLEVEL_UP,
  43         RUNLEVEL_DOWN,
  44         RUNLEVEL_SYSINIT
  45 } RunlevelType;
  46
  47 static const struct {
  48         const char *path;
  49         const char *target;
  50         const RunlevelType type;
  51 } rcnd_table[] = {
  52         /* Standard SysV runlevels */
  53         { "rc0.d",  SPECIAL_POWEROFF_TARGET,  RUNLEVEL_DOWN },
  54         { "rc1.d",  SPECIAL_RESCUE_TARGET,    RUNLEVEL_UP },
  55         { "rc2.d",  SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
  56         { "rc3.d",  SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
  57         { "rc4.d",  SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
  58         { "rc5.d",  SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
  59         { "rc6.d",  SPECIAL_REBOOT_TARGET,    RUNLEVEL_DOWN },
  60
  61         /* SUSE style boot.d */
  62         { "boot.d", SPECIAL_SYSINIT_TARGET,   RUNLEVEL_SYSINIT },
  63
  64         /* Debian style rcS.d */
  65         { "rcS.d",  SPECIAL_SYSINIT_TARGET,   RUNLEVEL_SYSINIT },
  66 };
  67
  68 #define RUNLEVELS_UP "12345"
  69 /* #define RUNLEVELS_DOWN "06" */
  70 /* #define RUNLEVELS_BOOT "bBsS" */
  71
  72 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
  73         [SERVICE_DEAD] = UNIT_INACTIVE,
  74         [SERVICE_START_PRE] = UNIT_ACTIVATING,
  75         [SERVICE_START] = UNIT_ACTIVATING,
  76         [SERVICE_START_POST] = UNIT_ACTIVATING,
  77         [SERVICE_RUNNING] = UNIT_ACTIVE,
  78         [SERVICE_EXITED] = UNIT_ACTIVE,
  79         [SERVICE_RELOAD] = UNIT_RELOADING,
  80         [SERVICE_STOP] = UNIT_DEACTIVATING,
  81         [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
  82         [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
  83         [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
  84         [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
  85         [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
  86         [SERVICE_MAINTENANCE] = UNIT_MAINTENANCE,
  87         [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
  88 };
  89
  90 static void service_init(Unit *u) {
  91         Service *s = SERVICE(u);
  92
  93         assert(u);
  94         assert(u->meta.load_state == UNIT_STUB);
  95
  96         s->timeout_usec = DEFAULT_TIMEOUT_USEC;
  97         s->restart_usec = DEFAULT_RESTART_USEC;
  98         s->timer_watch.type = WATCH_INVALID;
  99         s->sysv_start_priority = -1;
 100         s->socket_fd = -1;
 101
 102         exec_context_init(&s->exec_context);
 103
 104         RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
 105
 106         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
 107 }
 108
 109 static void service_unwatch_control_pid(Service *s) {
 110         assert(s);
 111
 112         if (s->control_pid <= 0)
 113                 return;
 114
 115         unit_unwatch_pid(UNIT(s), s->control_pid);
 116         s->control_pid = 0;
 117 }
 118
 119 static void service_unwatch_main_pid(Service *s) {
 120         assert(s);
 121
 122         if (s->main_pid <= 0)
 123                 return;
 124
 125         unit_unwatch_pid(UNIT(s), s->main_pid);
 126         s->main_pid = 0;
 127 }
 128
 129 static int service_set_main_pid(Service *s, pid_t pid) {
 130         pid_t ppid;
 131
 132         assert(s);
 133
 134         if (pid <= 1)
 135                 return -EINVAL;
 136
 137         if (pid == getpid())
 138                 return -EINVAL;
 139
 140         if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
 141                 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
 142                             s->meta.id, (unsigned long) pid);
 143
 144         s->main_pid = pid;
 145         s->main_pid_known = true;
 146
 147         exec_status_start(&s->main_exec_status, pid);
 148
 149         return 0;
 150 }
 151
 152 static void service_close_socket_fd(Service *s) {
 153         assert(s);
 154
 155         if (s->socket_fd < 0)
 156                 return;
 157
 158         close_nointr_nofail(s->socket_fd);
 159         s->socket_fd = -1;
 160 }
 161
 162 static void service_connection_unref(Service *s) {
 163         assert(s);
 164
 165         if (!s->socket)
 166                 return;
 167
 168         socket_connection_unref(s->socket);
 169         s->socket = NULL;
 170 }
 171
 172 static void service_done(Unit *u) {
 173         Service *s = SERVICE(u);
 174
 175         assert(s);
 176
 177         free(s->pid_file);
 178         s->pid_file = NULL;
 179
 180         free(s->sysv_path);
 181         s->sysv_path = NULL;
 182
 183         free(s->sysv_runlevels);
 184         s->sysv_runlevels = NULL;
 185
 186         free(s->status_text);
 187         s->status_text = NULL;
 188
 189         exec_context_done(&s->exec_context);
 190         exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
 191         s->control_command = NULL;
 192
 193         /* This will leak a process, but at least no memory or any of
 194          * our resources */
 195         service_unwatch_main_pid(s);
 196         service_unwatch_control_pid(s);
 197
 198         if (s->bus_name)  {
 199                 unit_unwatch_bus_name(UNIT(u), s->bus_name);
 200                 free(s->bus_name);
 201                 s->bus_name = NULL;
 202         }
 203
 204         service_close_socket_fd(s);
 205         service_connection_unref(s);
 206
 207         unit_unwatch_timer(u, &s->timer_watch);
 208 }
 209
 210 static char *sysv_translate_name(const char *name) {
 211         char *r;
 212
 213         if (!(r = new(char, strlen(name) + sizeof(".service"))))
 214                 return NULL;
 215
 216         if (startswith(name, "boot."))
 217                 /* Drop SuSE-style boot. prefix */
 218                 strcpy(stpcpy(r, name + 5), ".service");
 219         else if (endswith(name, ".sh"))
 220                 /* Drop Debian-style .sh suffix */
 221                 strcpy(stpcpy(r, name) - 3, ".service");
 222         else
 223                 /* Normal init scripts */
 224                 strcpy(stpcpy(r, name), ".service");
 225
 226         return r;
 227 }
 228
 229 static int sysv_translate_facility(const char *name, char **_r) {
 230
 231         static const char * const table[] = {
 232                 /* LSB defined facilities */
 233                 "$local_fs",  SPECIAL_LOCAL_FS_TARGET,
 234                 "$network",   SPECIAL_NETWORK_TARGET,
 235                 "$named",     SPECIAL_NSS_LOOKUP_TARGET,
 236                 "$portmap",   SPECIAL_RPCBIND_TARGET,
 237                 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
 238                 "$syslog",    SPECIAL_SYSLOG_TARGET,
 239                 "$time",      SPECIAL_RTC_SET_TARGET,
 240
 241                 /* Debian extensions */
 242                 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
 243                 "$mail-transfer-agent",  SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
 244                 "$x-display-manager",    SPECIAL_DISPLAY_MANAGER_SERVICE
 245         };
 246
 247         unsigned i;
 248         char *r;
 249
 250         for (i = 0; i < ELEMENTSOF(table); i += 2)
 251                 if (streq(table[i], name)) {
 252                         if (!(r = strdup(table[i+1])))
 253                                 return -ENOMEM;
 254
 255                         goto finish;
 256                 }
 257
 258         if (*name == '$')
 259                 return 0;
 260
 261         if (!(r = sysv_translate_name(name)))
 262                 return -ENOMEM;
 263
 264 finish:
 265
 266         if (_r)
 267                 *_r = r;
 268
 269         return 1;
 270 }
 271
 272 static int sysv_fix_order(Service *s) {
 273         Meta *other;
 274         int r;
 275
 276         assert(s);
 277
 278         if (s->sysv_start_priority < 0)
 279                 return 0;
 280
 281         /* For each pair of services where at least one lacks a LSB
 282          * header, we use the start priority value to order things. */
 283
 284         LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
 285                 Service *t;
 286                 UnitDependency d;
 287
 288                 t = (Service*) other;
 289
 290                 if (s == t)
 291                         continue;
 292
 293                 if (t->sysv_start_priority < 0)
 294                         continue;
 295
 296                 /* If both units have modern headers we don't care
 297                  * about the priorities */
 298                 if ((!s->sysv_path || s->sysv_has_lsb) &&
 299                     (!t->sysv_path || t->sysv_has_lsb))
 300                         continue;
 301
 302                 if (t->sysv_start_priority < s->sysv_start_priority)
 303                         d = UNIT_AFTER;
 304                 else if (t->sysv_start_priority > s->sysv_start_priority)
 305                         d = UNIT_BEFORE;
 306                 else
 307                         continue;
 308
 309                 /* FIXME: Maybe we should compare the name here lexicographically? */
 310
 311                 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
 312                         return r;
 313         }
 314
 315         return 0;
 316 }
 317
 318 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
 319         ExecCommand *c;
 320
 321         if (!(c = new0(ExecCommand, 1)))
 322                 return NULL;
 323
 324         if (!(c->path = strdup(path))) {
 325                 free(c);
 326                 return NULL;
 327         }
 328
 329         if (!(c->argv = strv_new(path, arg1, NULL))) {
 330                 free(c->path);
 331                 free(c);
 332                 return NULL;
 333         }
 334
 335         return c;
 336 }
 337
 338 static int sysv_exec_commands(Service *s) {
 339         ExecCommand *c;
 340
 341         assert(s);
 342         assert(s->sysv_path);
 343
 344         if (!(c = exec_command_new(s->sysv_path, "start")))
 345                 return -ENOMEM;
 346         exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
 347
 348         if (!(c = exec_command_new(s->sysv_path, "stop")))
 349                 return -ENOMEM;
 350         exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
 351
 352         if (!(c = exec_command_new(s->sysv_path, "reload")))
 353                 return -ENOMEM;
 354         exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
 355
 356         return 0;
 357 }
 358
 359 static int service_load_sysv_path(Service *s, const char *path) {
 360         FILE *f;
 361         Unit *u;
 362         unsigned line = 0;
 363         int r;
 364         enum {
 365                 NORMAL,
 366                 DESCRIPTION,
 367                 LSB,
 368                 LSB_DESCRIPTION
 369         } state = NORMAL;
 370
 371         assert(s);
 372         assert(path);
 373
 374         u = UNIT(s);
 375
 376         if (!(f = fopen(path, "re"))) {
 377                 r = errno == ENOENT ? 0 : -errno;
 378                 goto finish;
 379         }
 380
 381         free(s->sysv_path);
 382         if (!(s->sysv_path = strdup(path))) {
 383                 r = -ENOMEM;
 384                 goto finish;
 385         }
 386
 387         while (!feof(f)) {
 388                 char l[LINE_MAX], *t;
 389
 390                 if (!fgets(l, sizeof(l), f)) {
 391                         if (feof(f))
 392                                 break;
 393
 394                         r = -errno;
 395                         log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
 396                         goto finish;
 397                 }
 398
 399                 line++;
 400
 401                 t = strstrip(l);
 402                 if (*t != '#')
 403                         continue;
 404
 405                 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
 406                         state = LSB;
 407                         s->sysv_has_lsb = true;
 408                         continue;
 409                 }
 410
 411                 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
 412                         state = NORMAL;
 413                         continue;
 414                 }
 415
 416                 t++;
 417                 t += strspn(t, WHITESPACE);
 418
 419                 if (state == NORMAL) {
 420
 421                         /* Try to parse Red Hat style chkconfig headers */
 422
 423                         if (startswith_no_case(t, "chkconfig:")) {
 424                                 int start_priority;
 425                                 char runlevels[16], *k;
 426
 427                                 state = NORMAL;
 428
 429                                 if (sscanf(t+10, "%15s %i %*i",
 430                                            runlevels,
 431                                            &start_priority) != 2) {
 432
 433                                         log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
 434                                         continue;
 435                                 }
 436
 437                                 /* A start priority gathered from the
 438                                  * symlink farms is preferred over the
 439                                  * data from the LSB header. */
 440                                 if (start_priority < 0 || start_priority > 99)
 441                                         log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
 442                                 else if (s->sysv_start_priority < 0)
 443                                         s->sysv_start_priority = start_priority;
 444
 445                                 char_array_0(runlevels);
 446                                 k = delete_chars(runlevels, WHITESPACE "-");
 447
 448                                 if (k[0]) {
 449                                         char *d;
 450
 451                                         if (!(d = strdup(k))) {
 452                                                 r = -ENOMEM;
 453                                                 goto finish;
 454                                         }
 455
 456                                         free(s->sysv_runlevels);
 457                                         s->sysv_runlevels = d;
 458                                 }
 459
 460                         } else if (startswith_no_case(t, "description:") &&
 461                                    !u->meta.description) {
 462
 463                                 size_t k = strlen(t);
 464                                 char *d;
 465
 466                                 if (t[k-1] == '\\') {
 467                                         state = DESCRIPTION;
 468                                         t[k-1] = 0;
 469                                 }
 470
 471                                 if (!(d = strdup(strstrip(t+12)))) {
 472                                         r = -ENOMEM;
 473                                         goto finish;
 474                                 }
 475
 476                                 free(u->meta.description);
 477                                 u->meta.description = d;
 478
 479                         } else if (startswith_no_case(t, "pidfile:")) {
 480
 481                                 char *fn;
 482
 483                                 state = NORMAL;
 484
 485                                 fn = strstrip(t+8);
 486                                 if (!path_is_absolute(fn)) {
 487                                         log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
 488                                         continue;
 489                                 }
 490
 491                                 if (!(fn = strdup(fn))) {
 492                                         r = -ENOMEM;
 493                                         goto finish;
 494                                 }
 495
 496                                 free(s->pid_file);
 497                                 s->pid_file = fn;
 498                         }
 499
 500                 } else if (state == DESCRIPTION) {
 501
 502                         /* Try to parse Red Hat style description
 503                          * continuation */
 504
 505                         size_t k = strlen(t);
 506                         char *d;
 507
 508                         if (t[k-1] == '\\')
 509                                 t[k-1] = 0;
 510                         else
 511                                 state = NORMAL;
 512
 513                         assert(u->meta.description);
 514                         if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
 515                                 r = -ENOMEM;
 516                                 goto finish;
 517                         }
 518
 519                         free(u->meta.description);
 520                         u->meta.description = d;
 521
 522                 } else if (state == LSB || state == LSB_DESCRIPTION) {
 523
 524                         if (startswith_no_case(t, "Provides:")) {
 525                                 char *i, *w;
 526                                 size_t z;
 527
 528                                 state = LSB;
 529
 530                                 FOREACH_WORD_QUOTED(w, z, t+9, i) {
 531                                         char *n, *m;
 532
 533                                         if (!(n = strndup(w, z))) {
 534                                                 r = -ENOMEM;
 535                                                 goto finish;
 536                                         }
 537
 538                                         r = sysv_translate_facility(n, &m);
 539                                         free(n);
 540
 541                                         if (r < 0)
 542                                                 goto finish;
 543
 544                                         if (r == 0)
 545                                                 continue;
 546
 547                                         if (unit_name_to_type(m) == UNIT_SERVICE)
 548                                                 r = unit_add_name(u, m);
 549                                         else
 550                                                 r = unit_add_two_dependencies_by_name_inverse(u, UNIT_AFTER, UNIT_REQUIRES, m, NULL, true);
 551
 552                                         free(m);
 553
 554                                         if (r < 0)
 555                                                 goto finish;
 556                                 }
 557
 558                         } else if (startswith_no_case(t, "Required-Start:") ||
 559                                    startswith_no_case(t, "Should-Start:") ||
 560                                    startswith_no_case(t, "X-Start-Before:") ||
 561                                    startswith_no_case(t, "X-Start-After:")) {
 562                                 char *i, *w;
 563                                 size_t z;
 564
 565                                 state = LSB;
 566
 567                                 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
 568                                         char *n, *m;
 569
 570                                         if (!(n = strndup(w, z))) {
 571                                                 r = -ENOMEM;
 572                                                 goto finish;
 573                                         }
 574
 575                                         r = sysv_translate_facility(n, &m);
 576                                         free(n);
 577
 578                                         if (r < 0)
 579                                                 goto finish;
 580
 581                                         if (r == 0)
 582                                                 continue;
 583
 584                                         r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
 585                                         free(m);
 586
 587                                         if (r < 0)
 588                                                 goto finish;
 589                                 }
 590                         } else if (startswith_no_case(t, "Default-Start:")) {
 591                                 char *k, *d;
 592
 593                                 state = LSB;
 594
 595                                 k = delete_chars(t+14, WHITESPACE "-");
 596
 597                                 if (k[0] != 0) {
 598                                         if (!(d = strdup(k))) {
 599                                                 r = -ENOMEM;
 600                                                 goto finish;
 601                                         }
 602
 603                                         free(s->sysv_runlevels);
 604                                         s->sysv_runlevels = d;
 605                                 }
 606
 607                         } else if (startswith_no_case(t, "Description:") &&
 608                                    !u->meta.description) {
 609                                 char *d;
 610
 611                                 /* We use the long description only if
 612                                  * no short description is set. */
 613
 614                                 state = LSB_DESCRIPTION;
 615
 616                                 if (!(d = strdup(strstrip(t+12)))) {
 617                                         r = -ENOMEM;
 618                                         goto finish;
 619                                 }
 620
 621                                 free(u->meta.description);
 622                                 u->meta.description = d;
 623
 624                         } else if (startswith_no_case(t, "Short-Description:")) {
 625                                 char *d;
 626
 627                                 state = LSB;
 628
 629                                 if (!(d = strdup(strstrip(t+18)))) {
 630                                         r = -ENOMEM;
 631                                         goto finish;
 632                                 }
 633
 634                                 free(u->meta.description);
 635                                 u->meta.description = d;
 636
 637                         } else if (startswith_no_case(t, "X-Interactive:")) {
 638                                 int b;
 639
 640                                 if ((b = parse_boolean(strstrip(t+14))) < 0) {
 641                                         log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
 642                                         continue;
 643                                 }
 644
 645                                 if (b)
 646                                         s->exec_context.std_input = EXEC_INPUT_TTY;
 647                                 else
 648                                         s->exec_context.std_input = EXEC_INPUT_NULL;
 649
 650                         } else if (state == LSB_DESCRIPTION) {
 651
 652                                 if (startswith(l, "#\t") || startswith(l, "#  ")) {
 653                                         char *d;
 654
 655                                         assert(u->meta.description);
 656                                         if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
 657                                                 r = -ENOMEM;
 658                                                 goto finish;
 659                                         }
 660
 661                                         free(u->meta.description);
 662                                         u->meta.description = d;
 663                                 } else
 664                                         state = LSB;
 665                         }
 666                 }
 667         }
 668
 669         if ((r = sysv_exec_commands(s)) < 0)
 670                 goto finish;
 671
 672         if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
 673                 /* If there a runlevels configured for this service
 674                  * but none of the standard ones, then we assume this
 675                  * is some special kind of service (which might be
 676                  * needed for early boot) and don't create any links
 677                  * to it. */
 678
 679                 s->meta.default_dependencies = false;
 680
 681                 /* Don't timeout special services during boot (like fsck) */
 682                 s->timeout_usec = 0;
 683         }
 684
 685         /* Special setting for all SysV services */
 686         s->type = SERVICE_FORKING;
 687         s->valid_no_process = true;
 688         s->restart = SERVICE_ONCE;
 689         s->exec_context.std_output = EXEC_OUTPUT_TTY;
 690         s->exec_context.kill_mode = KILL_PROCESS_GROUP;
 691
 692         u->meta.load_state = UNIT_LOADED;
 693         r = 0;
 694
 695 finish:
 696
 697         if (f)
 698                 fclose(f);
 699
 700         return r;
 701 }
 702
 703 static int service_load_sysv_name(Service *s, const char *name) {
 704         char **p;
 705
 706         assert(s);
 707         assert(name);
 708
 709         /* For SysV services we strip the boot. or .sh
 710          * prefixes/suffixes. */
 711         if (startswith(name, "boot.") ||
 712             endswith(name, ".sh.service"))
 713                 return -ENOENT;
 714
 715         STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
 716                 char *path;
 717                 int r;
 718
 719                 if (asprintf(&path, "%s/%s", *p, name) < 0)
 720                         return -ENOMEM;
 721
 722                 assert(endswith(path, ".service"));
 723                 path[strlen(path)-8] = 0;
 724
 725                 r = service_load_sysv_path(s, path);
 726
 727                 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
 728                         /* Try Debian style xxx.sh source'able init scripts */
 729                         strcat(path, ".sh");
 730                         r = service_load_sysv_path(s, path);
 731                 }
 732
 733                 free(path);
 734
 735                 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
 736                         /* Try SUSE style boot.xxx init scripts */
 737
 738                         if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
 739                                 return -ENOMEM;
 740
 741                         path[strlen(path)-8] = 0;
 742                         r = service_load_sysv_path(s, path);
 743                         free(path);
 744                 }
 745
 746                 if (r < 0)
 747                         return r;
 748
 749                 if ((s->meta.load_state != UNIT_STUB))
 750                         break;
 751         }
 752
 753         return 0;
 754 }
 755
 756 static int service_load_sysv(Service *s) {
 757         const char *t;
 758         Iterator i;
 759         int r;
 760
 761         assert(s);
 762
 763         /* Load service data from SysV init scripts, preferably with
 764          * LSB headers ... */
 765
 766         if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
 767                 return 0;
 768
 769         if ((t = s->meta.id))
 770                 if ((r = service_load_sysv_name(s, t)) < 0)
 771                         return r;
 772
 773         if (s->meta.load_state == UNIT_STUB)
 774                 SET_FOREACH(t, s->meta.names, i) {
 775                         if (t == s->meta.id)
 776                                 continue;
 777
 778                         if ((r == service_load_sysv_name(s, t)) < 0)
 779                                 return r;
 780
 781                         if (s->meta.load_state != UNIT_STUB)
 782                                 break;
 783                 }
 784
 785         return 0;
 786 }
 787
 788 static int service_add_bus_name(Service *s) {
 789         char *n;
 790         int r;
 791
 792         assert(s);
 793         assert(s->bus_name);
 794
 795         if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
 796                 return 0;
 797
 798         r = unit_merge_by_name(UNIT(s), n);
 799         free(n);
 800
 801         return r;
 802 }
 803
 804 static int service_verify(Service *s) {
 805         assert(s);
 806
 807         if (s->meta.load_state != UNIT_LOADED)
 808                 return 0;
 809
 810         if (!s->exec_command[SERVICE_EXEC_START]) {
 811                 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
 812                 return -EINVAL;
 813         }
 814
 815         if (s->exec_command[SERVICE_EXEC_START]->command_next) {
 816                 log_error("%s has more than one ExecStart setting. Refusing.", s->meta.id);
 817                 return -EINVAL;
 818         }
 819
 820         if (s->type == SERVICE_DBUS && !s->bus_name) {
 821                 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
 822                 return -EINVAL;
 823         }
 824
 825         if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
 826                 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
 827                 return -EINVAL;
 828         }
 829
 830         return 0;
 831 }
 832
 833 static int service_add_default_dependencies(Service *s) {
 834         int r;
 835
 836         assert(s);
 837
 838         /* Add a number of automatic dependencies useful for the
 839          * majority of services. */
 840
 841         /* First, pull in base system */
 842         if (s->meta.manager->running_as == MANAGER_SYSTEM) {
 843
 844                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
 845                         return r;
 846
 847         } else if (s->meta.manager->running_as == MANAGER_SESSION) {
 848
 849                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
 850                         return r;
 851         }
 852
 853         /* Second, activate normal shutdown */
 854         return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
 855 }
 856
 857 static int service_load(Unit *u) {
 858         int r;
 859         Service *s = SERVICE(u);
 860
 861         assert(s);
 862
 863         /* Load a .service file */
 864         if ((r = unit_load_fragment(u)) < 0)
 865                 return r;
 866
 867         /* Load a classic init script as a fallback, if we couldn't find anything */
 868         if (u->meta.load_state == UNIT_STUB)
 869                 if ((r = service_load_sysv(s)) < 0)
 870                         return r;
 871
 872         /* Still nothing found? Then let's give up */
 873         if (u->meta.load_state == UNIT_STUB)
 874                 return -ENOENT;
 875
 876         /* We were able to load something, then let's add in the
 877          * dropin directories. */
 878         if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
 879                 return r;
 880
 881         /* This is a new unit? Then let's add in some extras */
 882         if (u->meta.load_state == UNIT_LOADED) {
 883                 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
 884                         return r;
 885
 886                 if ((r = unit_add_default_cgroup(u)) < 0)
 887                         return r;
 888
 889                 if ((r = sysv_fix_order(s)) < 0)
 890                         return r;
 891
 892                 if (s->bus_name) {
 893                         if ((r = service_add_bus_name(s)) < 0)
 894                                 return r;
 895
 896                         if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
 897                                 return r;
 898                 }
 899
 900                 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
 901                         s->notify_access = NOTIFY_MAIN;
 902
 903                 if (s->type == SERVICE_DBUS || s->bus_name)
 904                         if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
 905                                 return r;
 906
 907                 if (s->meta.default_dependencies)
 908                         if ((r = service_add_default_dependencies(s)) < 0)
 909                                 return r;
 910         }
 911
 912         return service_verify(s);
 913 }
 914
 915 static void service_dump(Unit *u, FILE *f, const char *prefix) {
 916
 917         ServiceExecCommand c;
 918         Service *s = SERVICE(u);
 919         const char *prefix2;
 920         char *p2;
 921
 922         assert(s);
 923
 924         p2 = strappend(prefix, "\t");
 925         prefix2 = p2 ? p2 : prefix;
 926
 927         fprintf(f,
 928                 "%sService State: %s\n"
 929                 "%sPermissionsStartOnly: %s\n"
 930                 "%sRootDirectoryStartOnly: %s\n"
 931                 "%sValidNoProcess: %s\n"
 932                 "%sType: %s\n"
 933                 "%sNotifyAccess: %s\n",
 934                 prefix, service_state_to_string(s->state),
 935                 prefix, yes_no(s->permissions_start_only),
 936                 prefix, yes_no(s->root_directory_start_only),
 937                 prefix, yes_no(s->valid_no_process),
 938                 prefix, service_type_to_string(s->type),
 939                 prefix, notify_access_to_string(s->notify_access));
 940
 941         if (s->control_pid > 0)
 942                 fprintf(f,
 943                         "%sControl PID: %lu\n",
 944                         prefix, (unsigned long) s->control_pid);
 945
 946         if (s->main_pid > 0)
 947                 fprintf(f,
 948                         "%sMain PID: %lu\n",
 949                         prefix, (unsigned long) s->main_pid);
 950
 951         if (s->pid_file)
 952                 fprintf(f,
 953                         "%sPIDFile: %s\n",
 954                         prefix, s->pid_file);
 955
 956         if (s->bus_name)
 957                 fprintf(f,
 958                         "%sBusName: %s\n"
 959                         "%sBus Name Good: %s\n",
 960                         prefix, s->bus_name,
 961                         prefix, yes_no(s->bus_name_good));
 962
 963         exec_context_dump(&s->exec_context, f, prefix);
 964
 965         for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
 966
 967                 if (!s->exec_command[c])
 968                         continue;
 969
 970                 fprintf(f, "%s-> %s:\n",
 971                         prefix, service_exec_command_to_string(c));
 972
 973                 exec_command_dump_list(s->exec_command[c], f, prefix2);
 974         }
 975
 976         if (s->sysv_path)
 977                 fprintf(f,
 978                         "%sSysV Init Script Path: %s\n"
 979                         "%sSysV Init Script has LSB Header: %s\n",
 980                         prefix, s->sysv_path,
 981                         prefix, yes_no(s->sysv_has_lsb));
 982
 983         if (s->sysv_start_priority >= 0)
 984                 fprintf(f,
 985                         "%sSysVStartPriority: %i\n",
 986                         prefix, s->sysv_start_priority);
 987
 988         if (s->sysv_runlevels)
 989                 fprintf(f, "%sSysVRunLevels: %s\n",
 990                         prefix, s->sysv_runlevels);
 991
 992         if (s->status_text)
 993                 fprintf(f, "%sStatus Text: %s\n",
 994                         prefix, s->status_text);
 995
 996         free(p2);
 997 }
 998
 999 static int service_load_pid_file(Service *s) {
1000         char *k;
1001         int r;
1002         pid_t pid;
1003
1004         assert(s);
1005
1006         if (s->main_pid_known)
1007                 return 0;
1008
1009         assert(s->main_pid <= 0);
1010
1011         if (!s->pid_file)
1012                 return -ENOENT;
1013
1014         if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1015                 return r;
1016
1017         r = parse_pid(k, &pid);
1018         free(k);
1019
1020         if (r < 0)
1021                 return r;
1022
1023         if (kill(pid, 0) < 0 && errno != EPERM) {
1024                 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1025                             (unsigned long) pid, s->pid_file);
1026                 return -ESRCH;
1027         }
1028
1029         if ((r = service_set_main_pid(s, pid)) < 0)
1030                 return r;
1031
1032         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1033                 /* FIXME: we need to do something here */
1034                 return r;
1035
1036         return 0;
1037 }
1038
1039 static int service_get_sockets(Service *s, Set **_set) {
1040         Set *set;
1041         Iterator i;
1042         char *t;
1043         int r;
1044
1045         assert(s);
1046         assert(_set);
1047
1048         if (s->socket_fd >= 0)
1049                 return 0;
1050
1051         /* Collects all Socket objects that belong to this
1052          * service. Note that a service might have multiple sockets
1053          * via multiple names. */
1054
1055         if (!(set = set_new(NULL, NULL)))
1056                 return -ENOMEM;
1057
1058         SET_FOREACH(t, s->meta.names, i) {
1059                 char *k;
1060                 Unit *p;
1061
1062                 /* Look for all socket objects that go by any of our
1063                  * units and collect their fds */
1064
1065                 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1066                         r = -ENOMEM;
1067                         goto fail;
1068                 }
1069
1070                 p = manager_get_unit(s->meta.manager, k);
1071                 free(k);
1072
1073                 if (!p)
1074                         continue;
1075
1076                 if ((r = set_put(set, p)) < 0)
1077                         goto fail;
1078         }
1079
1080         *_set = set;
1081         return 0;
1082
1083 fail:
1084         set_free(set);
1085         return r;
1086 }
1087
1088 static int service_notify_sockets_dead(Service *s) {
1089         Iterator i;
1090         Set *set;
1091         Socket *sock;
1092         int r;
1093
1094         assert(s);
1095
1096         if (s->socket_fd >= 0)
1097                 return 0;
1098
1099         /* Notifies all our sockets when we die */
1100         if ((r = service_get_sockets(s, &set)) < 0)
1101                 return r;
1102
1103         SET_FOREACH(sock, set, i)
1104                 socket_notify_service_dead(sock);
1105
1106         set_free(set);
1107
1108         return 0;
1109 }
1110
1111 static void service_set_state(Service *s, ServiceState state) {
1112         ServiceState old_state;
1113         assert(s);
1114
1115         old_state = s->state;
1116         s->state = state;
1117
1118         if (state != SERVICE_START_PRE &&
1119             state != SERVICE_START &&
1120             state != SERVICE_START_POST &&
1121             state != SERVICE_RELOAD &&
1122             state != SERVICE_STOP &&
1123             state != SERVICE_STOP_SIGTERM &&
1124             state != SERVICE_STOP_SIGKILL &&
1125             state != SERVICE_STOP_POST &&
1126             state != SERVICE_FINAL_SIGTERM &&
1127             state != SERVICE_FINAL_SIGKILL &&
1128             state != SERVICE_AUTO_RESTART)
1129                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1130
1131         if (state != SERVICE_START &&
1132             state != SERVICE_START_POST &&
1133             state != SERVICE_RUNNING &&
1134             state != SERVICE_RELOAD &&
1135             state != SERVICE_STOP &&
1136             state != SERVICE_STOP_SIGTERM &&
1137             state != SERVICE_STOP_SIGKILL)
1138                 service_unwatch_main_pid(s);
1139
1140         if (state != SERVICE_START_PRE &&
1141             state != SERVICE_START &&
1142             state != SERVICE_START_POST &&
1143             state != SERVICE_RELOAD &&
1144             state != SERVICE_STOP &&
1145             state != SERVICE_STOP_SIGTERM &&
1146             state != SERVICE_STOP_SIGKILL &&
1147             state != SERVICE_STOP_POST &&
1148             state != SERVICE_FINAL_SIGTERM &&
1149             state != SERVICE_FINAL_SIGKILL) {
1150                 service_unwatch_control_pid(s);
1151                 s->control_command = NULL;
1152                 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1153         }
1154
1155         if (state == SERVICE_DEAD ||
1156             state == SERVICE_STOP ||
1157             state == SERVICE_STOP_SIGTERM ||
1158             state == SERVICE_STOP_SIGKILL ||
1159             state == SERVICE_STOP_POST ||
1160             state == SERVICE_FINAL_SIGTERM ||
1161             state == SERVICE_FINAL_SIGKILL ||
1162             state == SERVICE_MAINTENANCE ||
1163             state == SERVICE_AUTO_RESTART)
1164                 service_notify_sockets_dead(s);
1165
1166         if (state != SERVICE_START_PRE &&
1167             state != SERVICE_START &&
1168             state != SERVICE_START_POST &&
1169             state != SERVICE_RUNNING &&
1170             state != SERVICE_RELOAD &&
1171             state != SERVICE_STOP &&
1172             state != SERVICE_STOP_SIGTERM &&
1173             state != SERVICE_STOP_SIGKILL &&
1174             state != SERVICE_STOP_POST &&
1175             state != SERVICE_FINAL_SIGTERM &&
1176             state != SERVICE_FINAL_SIGKILL &&
1177             !(state == SERVICE_DEAD && s->meta.job)) {
1178                 service_close_socket_fd(s);
1179                 service_connection_unref(s);
1180         }
1181
1182         /* For the inactive states unit_notify() will trim the cgroup,
1183          * but for exit we have to do that ourselves... */
1184         if (state == SERVICE_EXITED)
1185                 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1186
1187         if (old_state != state)
1188                 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1189
1190         unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1191 }
1192
1193 static int service_coldplug(Unit *u) {
1194         Service *s = SERVICE(u);
1195         int r;
1196
1197         assert(s);
1198         assert(s->state == SERVICE_DEAD);
1199
1200         if (s->deserialized_state != s->state) {
1201
1202                 if (s->deserialized_state == SERVICE_START_PRE ||
1203                     s->deserialized_state == SERVICE_START ||
1204                     s->deserialized_state == SERVICE_START_POST ||
1205                     s->deserialized_state == SERVICE_RELOAD ||
1206                     s->deserialized_state == SERVICE_STOP ||
1207                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1208                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1209                     s->deserialized_state == SERVICE_STOP_POST ||
1210                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1211                     s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1212                     s->deserialized_state == SERVICE_AUTO_RESTART) {
1213
1214                         if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1215                                 usec_t k;
1216
1217                                 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1218
1219                                 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1220                                         return r;
1221                         }
1222                 }
1223
1224                 if ((s->deserialized_state == SERVICE_START &&
1225                      (s->type == SERVICE_FORKING ||
1226                       s->type == SERVICE_DBUS ||
1227                       s->type == SERVICE_FINISH ||
1228                       s->type == SERVICE_NOTIFY)) ||
1229                     s->deserialized_state == SERVICE_START_POST ||
1230                     s->deserialized_state == SERVICE_RUNNING ||
1231                     s->deserialized_state == SERVICE_RELOAD ||
1232                     s->deserialized_state == SERVICE_STOP ||
1233                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1234                     s->deserialized_state == SERVICE_STOP_SIGKILL)
1235                         if (s->main_pid > 0)
1236                                 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1237                                         return r;
1238
1239                 if (s->deserialized_state == SERVICE_START_PRE ||
1240                     s->deserialized_state == SERVICE_START ||
1241                     s->deserialized_state == SERVICE_START_POST ||
1242                     s->deserialized_state == SERVICE_RELOAD ||
1243                     s->deserialized_state == SERVICE_STOP ||
1244                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1245                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1246                     s->deserialized_state == SERVICE_STOP_POST ||
1247                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1248                     s->deserialized_state == SERVICE_FINAL_SIGKILL)
1249                         if (s->control_pid > 0)
1250                                 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1251                                         return r;
1252
1253                 service_set_state(s, s->deserialized_state);
1254         }
1255
1256         return 0;
1257 }
1258
1259 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1260         Iterator i;
1261         int r;
1262         int *rfds = NULL;
1263         unsigned rn_fds = 0;
1264         Set *set;
1265         Socket *sock;
1266
1267         assert(s);
1268         assert(fds);
1269         assert(n_fds);
1270
1271         if (s->socket_fd >= 0)
1272                 return 0;
1273
1274         if ((r = service_get_sockets(s, &set)) < 0)
1275                 return r;
1276
1277         SET_FOREACH(sock, set, i) {
1278                 int *cfds;
1279                 unsigned cn_fds;
1280
1281                 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1282                         goto fail;
1283
1284                 if (!cfds)
1285                         continue;
1286
1287                 if (!rfds) {
1288                         rfds = cfds;
1289                         rn_fds = cn_fds;
1290                 } else {
1291                         int *t;
1292
1293                         if (!(t = new(int, rn_fds+cn_fds))) {
1294                                 free(cfds);
1295                                 r = -ENOMEM;
1296                                 goto fail;
1297                         }
1298
1299                         memcpy(t, rfds, rn_fds);
1300                         memcpy(t+rn_fds, cfds, cn_fds);
1301                         free(rfds);
1302                         free(cfds);
1303
1304                         rfds = t;
1305                         rn_fds = rn_fds+cn_fds;
1306                 }
1307         }
1308
1309         *fds = rfds;
1310         *n_fds = rn_fds;
1311
1312         set_free(set);
1313
1314         return 0;
1315
1316 fail:
1317         set_free(set);
1318         free(rfds);
1319
1320         return r;
1321 }
1322
1323 static int service_spawn(
1324                 Service *s,
1325                 ExecCommand *c,
1326                 bool timeout,
1327                 bool pass_fds,
1328                 bool apply_permissions,
1329                 bool apply_chroot,
1330                 bool apply_tty_stdin,
1331                 bool set_notify_socket,
1332                 pid_t *_pid) {
1333
1334         pid_t pid;
1335         int r;
1336         int *fds = NULL, *fdsbuf = NULL;
1337         unsigned n_fds = 0, n_env = 0;
1338         char **argv = NULL, **final_env = NULL, **our_env = NULL;
1339
1340         assert(s);
1341         assert(c);
1342         assert(_pid);
1343
1344         if (pass_fds ||
1345             s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1346             s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1347             s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1348
1349                 if (s->socket_fd >= 0) {
1350                         fds = &s->socket_fd;
1351                         n_fds = 1;
1352                 } else {
1353                         if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1354                                 goto fail;
1355
1356                         fds = fdsbuf;
1357                 }
1358         }
1359
1360         if (timeout && s->timeout_usec) {
1361                 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1362                         goto fail;
1363         } else
1364                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1365
1366         if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1367                 r = -ENOMEM;
1368                 goto fail;
1369         }
1370
1371         if (!(our_env = new0(char*, 3))) {
1372                 r = -ENOMEM;
1373                 goto fail;
1374         }
1375
1376         if (set_notify_socket)
1377                 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1378                         r = -ENOMEM;
1379                         goto fail;
1380                 }
1381
1382         if (s->main_pid > 0)
1383                 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1384                         r = -ENOMEM;
1385                         goto fail;
1386                 }
1387
1388         if (!(final_env = strv_env_merge(2,
1389                                          s->meta.manager->environment,
1390                                          our_env,
1391                                          NULL))) {
1392                 r = -ENOMEM;
1393                 goto fail;
1394         }
1395
1396         r = exec_spawn(c,
1397                        argv,
1398                        &s->exec_context,
1399                        fds, n_fds,
1400                        final_env,
1401                        apply_permissions,
1402                        apply_chroot,
1403                        apply_tty_stdin,
1404                        s->meta.manager->confirm_spawn,
1405                        s->meta.cgroup_bondings,
1406                        &pid);
1407
1408         if (r < 0)
1409                 goto fail;
1410
1411
1412         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1413                 /* FIXME: we need to do something here */
1414                 goto fail;
1415
1416         free(fdsbuf);
1417         strv_free(argv);
1418         strv_free(our_env);
1419         strv_free(final_env);
1420
1421         *_pid = pid;
1422
1423         return 0;
1424
1425 fail:
1426         free(fdsbuf);
1427         strv_free(argv);
1428         strv_free(our_env);
1429         strv_free(final_env);
1430
1431         if (timeout)
1432                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1433
1434         return r;
1435 }
1436
1437 static int main_pid_good(Service *s) {
1438         assert(s);
1439
1440         /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1441          * don't know */
1442
1443         /* If we know the pid file, then lets just check if it is
1444          * still valid */
1445         if (s->main_pid_known)
1446                 return s->main_pid > 0;
1447
1448         /* We don't know the pid */
1449         return -EAGAIN;
1450 }
1451
1452 static int control_pid_good(Service *s) {
1453         assert(s);
1454
1455         return s->control_pid > 0;
1456 }
1457
1458 static int cgroup_good(Service *s) {
1459         int r;
1460
1461         assert(s);
1462
1463         if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1464                 return r;
1465
1466         return !r;
1467 }
1468
1469 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1470         int r;
1471         assert(s);
1472
1473         if (!success)
1474                 s->failure = true;
1475
1476         if (allow_restart &&
1477             s->allow_restart &&
1478             (s->restart == SERVICE_RESTART_ALWAYS ||
1479              (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1480
1481                 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1482                         goto fail;
1483
1484                 service_set_state(s, SERVICE_AUTO_RESTART);
1485         } else
1486                 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
1487
1488         return;
1489
1490 fail:
1491         log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1492         service_enter_dead(s, false, false);
1493 }
1494
1495 static void service_enter_signal(Service *s, ServiceState state, bool success);
1496
1497 static void service_enter_stop_post(Service *s, bool success) {
1498         int r;
1499         assert(s);
1500
1501         if (!success)
1502                 s->failure = true;
1503
1504         service_unwatch_control_pid(s);
1505
1506         s->control_command_id = SERVICE_EXEC_STOP_POST;
1507         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1508                 if ((r = service_spawn(s,
1509                                        s->control_command,
1510                                        true,
1511                                        false,
1512                                        !s->permissions_start_only,
1513                                        !s->root_directory_start_only,
1514                                        true,
1515                                        false,
1516                                        &s->control_pid)) < 0)
1517                         goto fail;
1518
1519
1520                 service_set_state(s, SERVICE_STOP_POST);
1521         } else
1522                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1523
1524         return;
1525
1526 fail:
1527         log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1528         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1529 }
1530
1531 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1532         int r;
1533         bool sent = false;
1534
1535         assert(s);
1536
1537         if (!success)
1538                 s->failure = true;
1539
1540         if (s->exec_context.kill_mode != KILL_NONE) {
1541                 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1542
1543                 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1544
1545                         if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
1546                                 if (r != -EAGAIN && r != -ESRCH)
1547                                         goto fail;
1548                         } else
1549                                 sent = true;
1550                 }
1551
1552                 if (!sent) {
1553                         r = 0;
1554
1555                         if (s->main_pid > 0) {
1556                                 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1557                                         r = -errno;
1558                                 else
1559                                         sent = true;
1560                         }
1561
1562                         if (s->control_pid > 0) {
1563                                 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1564                                         r = -errno;
1565                                 else
1566                                         sent = true;
1567                         }
1568
1569                         if (r < 0)
1570                                 goto fail;
1571                 }
1572         }
1573
1574         if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1575                 if (s->timeout_usec > 0)
1576                         if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1577                                 goto fail;
1578
1579                 service_set_state(s, state);
1580         } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1581                 service_enter_stop_post(s, true);
1582         else
1583                 service_enter_dead(s, true, true);
1584
1585         return;
1586
1587 fail:
1588         log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1589
1590         if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1591                 service_enter_stop_post(s, false);
1592         else
1593                 service_enter_dead(s, false, true);
1594 }
1595
1596 static void service_enter_stop(Service *s, bool success) {
1597         int r;
1598
1599         assert(s);
1600
1601         if (!success)
1602                 s->failure = true;
1603
1604         service_unwatch_control_pid(s);
1605
1606         s->control_command_id = SERVICE_EXEC_STOP;
1607         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1608                 if ((r = service_spawn(s,
1609                                        s->control_command,
1610                                        true,
1611                                        false,
1612                                        !s->permissions_start_only,
1613                                        !s->root_directory_start_only,
1614                                        false,
1615                                        false,
1616                                        &s->control_pid)) < 0)
1617                         goto fail;
1618
1619                 service_set_state(s, SERVICE_STOP);
1620         } else
1621                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1622
1623         return;
1624
1625 fail:
1626         log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1627         service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1628 }
1629
1630 static void service_enter_running(Service *s, bool success) {
1631         int main_pid_ok, cgroup_ok;
1632         assert(s);
1633
1634         if (!success)
1635                 s->failure = true;
1636
1637         main_pid_ok = main_pid_good(s);
1638         cgroup_ok = cgroup_good(s);
1639
1640         if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1641             (s->bus_name_good || s->type != SERVICE_DBUS))
1642                 service_set_state(s, SERVICE_RUNNING);
1643         else if (s->valid_no_process)
1644                 service_set_state(s, SERVICE_EXITED);
1645         else
1646                 service_enter_stop(s, true);
1647 }
1648
1649 static void service_enter_start_post(Service *s) {
1650         int r;
1651         assert(s);
1652
1653         service_unwatch_control_pid(s);
1654
1655         s->control_command_id = SERVICE_EXEC_START_POST;
1656         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1657                 if ((r = service_spawn(s,
1658                                        s->control_command,
1659                                        true,
1660                                        false,
1661                                        !s->permissions_start_only,
1662                                        !s->root_directory_start_only,
1663                                        false,
1664                                        false,
1665                                        &s->control_pid)) < 0)
1666                         goto fail;
1667
1668                 service_set_state(s, SERVICE_START_POST);
1669         } else
1670                 service_enter_running(s, true);
1671
1672         return;
1673
1674 fail:
1675         log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1676         service_enter_stop(s, false);
1677 }
1678
1679 static void service_enter_start(Service *s) {
1680         pid_t pid;
1681         int r;
1682
1683         assert(s);
1684
1685         assert(s->exec_command[SERVICE_EXEC_START]);
1686         assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1687
1688         if (s->type == SERVICE_FORKING)
1689                 service_unwatch_control_pid(s);
1690         else
1691                 service_unwatch_main_pid(s);
1692
1693         if ((r = service_spawn(s,
1694                                s->exec_command[SERVICE_EXEC_START],
1695                                s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1696                                true,
1697                                true,
1698                                true,
1699                                true,
1700                                s->notify_access != NOTIFY_NONE,
1701                                &pid)) < 0)
1702                 goto fail;
1703
1704         if (s->type == SERVICE_SIMPLE) {
1705                 /* For simple services we immediately start
1706                  * the START_POST binaries. */
1707
1708                 service_set_main_pid(s, pid);
1709                 service_enter_start_post(s);
1710
1711         } else  if (s->type == SERVICE_FORKING) {
1712
1713                 /* For forking services we wait until the start
1714                  * process exited. */
1715
1716                 s->control_command_id = SERVICE_EXEC_START;
1717                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1718
1719                 s->control_pid = pid;
1720                 service_set_state(s, SERVICE_START);
1721
1722         } else if (s->type == SERVICE_FINISH ||
1723                    s->type == SERVICE_DBUS ||
1724                    s->type == SERVICE_NOTIFY) {
1725
1726                 /* For finishing services we wait until the start
1727                  * process exited, too, but it is our main process. */
1728
1729                 /* For D-Bus services we know the main pid right away,
1730                  * but wait for the bus name to appear on the
1731                  * bus. Notify services are similar. */
1732
1733                 service_set_main_pid(s, pid);
1734                 service_set_state(s, SERVICE_START);
1735         } else
1736                 assert_not_reached("Unknown service type");
1737
1738         return;
1739
1740 fail:
1741         log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
1742         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1743 }
1744
1745 static void service_enter_start_pre(Service *s) {
1746         int r;
1747
1748         assert(s);
1749
1750         service_unwatch_control_pid(s);
1751
1752         s->control_command_id = SERVICE_EXEC_START_PRE;
1753         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1754                 if ((r = service_spawn(s,
1755                                        s->control_command,
1756                                        true,
1757                                        false,
1758                                        !s->permissions_start_only,
1759                                        !s->root_directory_start_only,
1760                                        true,
1761                                        false,
1762                                        &s->control_pid)) < 0)
1763                         goto fail;
1764
1765                 service_set_state(s, SERVICE_START_PRE);
1766         } else
1767                 service_enter_start(s);
1768
1769         return;
1770
1771 fail:
1772         log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
1773         service_enter_dead(s, false, true);
1774 }
1775
1776 static void service_enter_restart(Service *s) {
1777         int r;
1778         DBusError error;
1779
1780         assert(s);
1781         dbus_error_init(&error);
1782
1783         service_enter_dead(s, true, false);
1784
1785         if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
1786                 goto fail;
1787
1788         log_debug("%s scheduled restart job.", s->meta.id);
1789         return;
1790
1791 fail:
1792         log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
1793         service_enter_dead(s, false, false);
1794
1795         dbus_error_free(&error);
1796 }
1797
1798 static void service_enter_reload(Service *s) {
1799         int r;
1800
1801         assert(s);
1802
1803         service_unwatch_control_pid(s);
1804
1805         s->control_command_id = SERVICE_EXEC_RELOAD;
1806         if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1807                 if ((r = service_spawn(s,
1808                                        s->control_command,
1809                                        true,
1810                                        false,
1811                                        !s->permissions_start_only,
1812                                        !s->root_directory_start_only,
1813                                        false,
1814                                        false,
1815                                        &s->control_pid)) < 0)
1816                         goto fail;
1817
1818                 service_set_state(s, SERVICE_RELOAD);
1819         } else
1820                 service_enter_running(s, true);
1821
1822         return;
1823
1824 fail:
1825         log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
1826         service_enter_stop(s, false);
1827 }
1828
1829 static void service_run_next(Service *s, bool success) {
1830         int r;
1831
1832         assert(s);
1833         assert(s->control_command);
1834         assert(s->control_command->command_next);
1835
1836         if (!success)
1837                 s->failure = true;
1838
1839         s->control_command = s->control_command->command_next;
1840
1841         service_unwatch_control_pid(s);
1842
1843         if ((r = service_spawn(s,
1844                                s->control_command,
1845                                true,
1846                                false,
1847                                !s->permissions_start_only,
1848                                !s->root_directory_start_only,
1849                                s->control_command_id == SERVICE_EXEC_START_PRE ||
1850                                s->control_command_id == SERVICE_EXEC_STOP_POST,
1851                                false,
1852                                &s->control_pid)) < 0)
1853                 goto fail;
1854
1855         return;
1856
1857 fail:
1858         log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
1859
1860         if (s->state == SERVICE_START_PRE)
1861                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1862         else if (s->state == SERVICE_STOP)
1863                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1864         else if (s->state == SERVICE_STOP_POST)
1865                 service_enter_dead(s, false, true);
1866         else
1867                 service_enter_stop(s, false);
1868 }
1869
1870 static int service_start(Unit *u) {
1871         Service *s = SERVICE(u);
1872
1873         assert(s);
1874
1875         /* We cannot fulfill this request right now, try again later
1876          * please! */
1877         if (s->state == SERVICE_STOP ||
1878             s->state == SERVICE_STOP_SIGTERM ||
1879             s->state == SERVICE_STOP_SIGKILL ||
1880             s->state == SERVICE_STOP_POST ||
1881             s->state == SERVICE_FINAL_SIGTERM ||
1882             s->state == SERVICE_FINAL_SIGKILL)
1883                 return -EAGAIN;
1884
1885         /* Already on it! */
1886         if (s->state == SERVICE_START_PRE ||
1887             s->state == SERVICE_START ||
1888             s->state == SERVICE_START_POST)
1889                 return 0;
1890
1891         assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
1892
1893         /* Make sure we don't enter a busy loop of some kind. */
1894         if (!ratelimit_test(&s->ratelimit)) {
1895                 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1896                 return -ECANCELED;
1897         }
1898
1899         if ((s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1900              s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1901              s->exec_context.std_error == EXEC_OUTPUT_SOCKET) &&
1902             s->socket_fd < 0) {
1903                 log_warning("%s can only be started with a per-connection socket.", u->meta.id);
1904                 return -EINVAL;
1905         }
1906
1907         s->failure = false;
1908         s->main_pid_known = false;
1909         s->allow_restart = true;
1910
1911         service_enter_start_pre(s);
1912         return 0;
1913 }
1914
1915 static int service_stop(Unit *u) {
1916         Service *s = SERVICE(u);
1917
1918         assert(s);
1919
1920         /* This is a user request, so don't do restarts on this
1921          * shutdown. */
1922         s->allow_restart = false;
1923
1924         /* Already on it */
1925         if (s->state == SERVICE_STOP ||
1926             s->state == SERVICE_STOP_SIGTERM ||
1927             s->state == SERVICE_STOP_SIGKILL ||
1928             s->state == SERVICE_STOP_POST ||
1929             s->state == SERVICE_FINAL_SIGTERM ||
1930             s->state == SERVICE_FINAL_SIGKILL)
1931                 return 0;
1932
1933         /* Don't allow a restart */
1934         if (s->state == SERVICE_AUTO_RESTART) {
1935                 service_set_state(s, SERVICE_DEAD);
1936                 return 0;
1937         }
1938
1939         /* If there's already something running we go directly into
1940          * kill mode. */
1941         if (s->state == SERVICE_START_PRE ||
1942             s->state == SERVICE_START ||
1943             s->state == SERVICE_START_POST ||
1944             s->state == SERVICE_RELOAD) {
1945                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1946                 return 0;
1947         }
1948
1949         assert(s->state == SERVICE_RUNNING ||
1950                s->state == SERVICE_EXITED);
1951
1952         service_enter_stop(s, true);
1953         return 0;
1954 }
1955
1956 static int service_reload(Unit *u) {
1957         Service *s = SERVICE(u);
1958
1959         assert(s);
1960
1961         assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1962
1963         service_enter_reload(s);
1964         return 0;
1965 }
1966
1967 static bool service_can_reload(Unit *u) {
1968         Service *s = SERVICE(u);
1969
1970         assert(s);
1971
1972         return !!s->exec_command[SERVICE_EXEC_RELOAD];
1973 }
1974
1975 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1976         Service *s = SERVICE(u);
1977
1978         assert(u);
1979         assert(f);
1980         assert(fds);
1981
1982         unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1983         unit_serialize_item(u, f, "failure", yes_no(s->failure));
1984
1985         if (s->control_pid > 0)
1986                 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
1987
1988         if (s->main_pid_known && s->main_pid > 0)
1989                 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
1990
1991         unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1992
1993         /* There's a minor uncleanliness here: if there are multiple
1994          * commands attached here, we will start from the first one
1995          * again */
1996         if (s->control_command_id >= 0)
1997                 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1998
1999         if (s->socket_fd >= 0) {
2000                 int copy;
2001
2002                 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2003                         return copy;
2004
2005                 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2006         }
2007
2008         if (s->main_exec_status.pid > 0) {
2009                 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2010
2011                 if (s->main_exec_status.start_timestamp.realtime > 0) {
2012                         unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2013                                                    "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2014
2015                         unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2016                                                    "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2017                 }
2018
2019                 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2020                         unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2021                                                    "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2022                         unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2023                                                    "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2024
2025                         unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2026                         unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2027                 }
2028         }
2029
2030         return 0;
2031 }
2032
2033 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2034         Service *s = SERVICE(u);
2035         int r;
2036
2037         assert(u);
2038         assert(key);
2039         assert(value);
2040         assert(fds);
2041
2042         if (streq(key, "state")) {
2043                 ServiceState state;
2044
2045                 if ((state = service_state_from_string(value)) < 0)
2046                         log_debug("Failed to parse state value %s", value);
2047                 else
2048                         s->deserialized_state = state;
2049         } else if (streq(key, "failure")) {
2050                 int b;
2051
2052                 if ((b = parse_boolean(value)) < 0)
2053                         log_debug("Failed to parse failure value %s", value);
2054                 else
2055                         s->failure = b || s->failure;
2056         } else if (streq(key, "control-pid")) {
2057                 pid_t pid;
2058
2059                 if ((r = parse_pid(value, &pid)) < 0)
2060                         log_debug("Failed to parse control-pid value %s", value);
2061                 else
2062                         s->control_pid = pid;
2063         } else if (streq(key, "main-pid")) {
2064                 pid_t pid;
2065
2066                 if ((r = parse_pid(value, &pid)) < 0)
2067                         log_debug("Failed to parse main-pid value %s", value);
2068                 else
2069                         service_set_main_pid(s, (pid_t) pid);
2070         } else if (streq(key, "main-pid-known")) {
2071                 int b;
2072
2073                 if ((b = parse_boolean(value)) < 0)
2074                         log_debug("Failed to parse main-pid-known value %s", value);
2075                 else
2076                         s->main_pid_known = b;
2077         } else if (streq(key, "control-command")) {
2078                 ServiceExecCommand id;
2079
2080                 if ((id = service_exec_command_from_string(value)) < 0)
2081                         log_debug("Failed to parse exec-command value %s", value);
2082                 else {
2083                         s->control_command_id = id;
2084                         s->control_command = s->exec_command[id];
2085                 }
2086         } else if (streq(key, "socket-fd")) {
2087                 int fd;
2088
2089                 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2090                         log_debug("Failed to parse socket-fd value %s", value);
2091                 else {
2092
2093                         if (s->socket_fd >= 0)
2094                                 close_nointr_nofail(s->socket_fd);
2095                         s->socket_fd = fdset_remove(fds, fd);
2096                 }
2097         } else if (streq(key, "main-exec-status-pid")) {
2098                 pid_t pid;
2099
2100                 if ((r = parse_pid(value, &pid)) < 0)
2101                         log_debug("Failed to parse main-exec-status-pid value %s", value);
2102                 else
2103                         s->main_exec_status.pid = pid;
2104         } else if (streq(key, "main-exec-status-code")) {
2105                 int i;
2106
2107                 if ((r = safe_atoi(value, &i)) < 0)
2108                         log_debug("Failed to parse main-exec-status-code value %s", value);
2109                 else
2110                         s->main_exec_status.code = i;
2111         } else if (streq(key, "main-exec-status-status")) {
2112                 int i;
2113
2114                 if ((r = safe_atoi(value, &i)) < 0)
2115                         log_debug("Failed to parse main-exec-status-status value %s", value);
2116                 else
2117                         s->main_exec_status.status = i;
2118         } else if (streq(key, "main-exec-status-start-realtime")) {
2119                 uint64_t k;
2120
2121                 if ((r = safe_atou64(value, &k)) < 0)
2122                         log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2123                 else
2124                         s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2125         } else if (streq(key, "main-exec-status-start-monotonic")) {
2126                 uint64_t k;
2127
2128                 if ((r = safe_atou64(value, &k)) < 0)
2129                         log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2130                 else
2131                         s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2132         } else if (streq(key, "main-exec-status-exit-realtime")) {
2133                 uint64_t k;
2134
2135                 if ((r = safe_atou64(value, &k)) < 0)
2136                         log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2137                 else
2138                         s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2139         } else if (streq(key, "main-exec-status-exit-monotonic")) {
2140                 uint64_t k;
2141
2142                 if ((r = safe_atou64(value, &k)) < 0)
2143                         log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2144                 else
2145                         s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
2146         } else
2147                 log_debug("Unknown serialization key '%s'", key);
2148
2149         return 0;
2150 }
2151
2152 static UnitActiveState service_active_state(Unit *u) {
2153         assert(u);
2154
2155         return state_translation_table[SERVICE(u)->state];
2156 }
2157
2158 static const char *service_sub_state_to_string(Unit *u) {
2159         assert(u);
2160
2161         return service_state_to_string(SERVICE(u)->state);
2162 }
2163
2164 static bool service_check_gc(Unit *u) {
2165         Service *s = SERVICE(u);
2166
2167         assert(s);
2168
2169         return !!s->sysv_path;
2170 }
2171
2172 static bool service_check_snapshot(Unit *u) {
2173         Service *s = SERVICE(u);
2174
2175         assert(s);
2176
2177         return !s->got_socket_fd;
2178 }
2179
2180 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2181         Service *s = SERVICE(u);
2182         bool success;
2183
2184         assert(s);
2185         assert(pid >= 0);
2186
2187         success = is_clean_exit(code, status);
2188
2189         if (s->main_pid == pid) {
2190
2191                 exec_status_exit(&s->main_exec_status, pid, code, status);
2192                 s->main_pid = 0;
2193
2194                 if (s->type != SERVICE_FORKING) {
2195                         assert(s->exec_command[SERVICE_EXEC_START]);
2196                         s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
2197
2198                         if (s->exec_command[SERVICE_EXEC_START]->ignore)
2199                                 success = true;
2200                 }
2201
2202                 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2203                          "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2204                 s->failure = s->failure || !success;
2205
2206                 /* The service exited, so the service is officially
2207                  * gone. */
2208
2209                 switch (s->state) {
2210
2211                 case SERVICE_START_POST:
2212                 case SERVICE_RELOAD:
2213                 case SERVICE_STOP:
2214                         /* Need to wait until the operation is
2215                          * done */
2216                         break;
2217
2218                 case SERVICE_START:
2219                         if (s->type == SERVICE_FINISH) {
2220                                 /* This was our main goal, so let's go on */
2221                                 if (success)
2222                                         service_enter_start_post(s);
2223                                 else
2224                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2225                                 break;
2226                         } else {
2227                                 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2228
2229                                 /* Fall through */
2230                         }
2231
2232                 case SERVICE_RUNNING:
2233                         service_enter_running(s, success);
2234                         break;
2235
2236                 case SERVICE_STOP_SIGTERM:
2237                 case SERVICE_STOP_SIGKILL:
2238
2239                         if (!control_pid_good(s))
2240                                 service_enter_stop_post(s, success);
2241
2242                         /* If there is still a control process, wait for that first */
2243                         break;
2244
2245                 default:
2246                         assert_not_reached("Uh, main process died at wrong time.");
2247                 }
2248
2249         } else if (s->control_pid == pid) {
2250
2251                 if (s->control_command) {
2252                         exec_status_exit(&s->control_command->exec_status, pid, code, status);
2253
2254                         if (s->control_command->ignore)
2255                                 success = true;
2256                 }
2257
2258                 s->control_pid = 0;
2259
2260                 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2261                          "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2262                 s->failure = s->failure || !success;
2263
2264                 /* If we are shutting things down anyway we
2265                  * don't care about failing commands. */
2266
2267                 if (s->control_command && s->control_command->command_next && success) {
2268
2269                         /* There is another command to *
2270                          * execute, so let's do that. */
2271
2272                         log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
2273                         service_run_next(s, success);
2274
2275                 } else {
2276                         /* No further commands for this step, so let's
2277                          * figure out what to do next */
2278
2279                         s->control_command = NULL;
2280                         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2281
2282                         log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2283
2284                         switch (s->state) {
2285
2286                         case SERVICE_START_PRE:
2287                                 if (success)
2288                                         service_enter_start(s);
2289                                 else
2290                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2291                                 break;
2292
2293                         case SERVICE_START:
2294                                 assert(s->type == SERVICE_FORKING);
2295
2296                                 /* Let's try to load the pid
2297                                  * file here if we can. We
2298                                  * ignore the return value,
2299                                  * since the PID file might
2300                                  * actually be created by a
2301                                  * START_POST script */
2302
2303                                 if (success) {
2304                                         if (s->pid_file)
2305                                                 service_load_pid_file(s);
2306
2307                                         service_enter_start_post(s);
2308                                 } else
2309                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2310
2311                                 break;
2312
2313                         case SERVICE_START_POST:
2314                                 if (success && s->pid_file && !s->main_pid_known) {
2315                                         int r;
2316
2317                                         /* Hmm, let's see if we can
2318                                          * load the pid now after the
2319                                          * start-post scripts got
2320                                          * executed. */
2321
2322                                         if ((r = service_load_pid_file(s)) < 0)
2323                                                 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2324                                 }
2325
2326                                 /* Fall through */
2327
2328                         case SERVICE_RELOAD:
2329                                 if (success)
2330                                         service_enter_running(s, true);
2331                                 else
2332                                         service_enter_stop(s, false);
2333
2334                                 break;
2335
2336                         case SERVICE_STOP:
2337                                 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2338                                 break;
2339
2340                         case SERVICE_STOP_SIGTERM:
2341                         case SERVICE_STOP_SIGKILL:
2342                                 if (main_pid_good(s) <= 0)
2343                                         service_enter_stop_post(s, success);
2344
2345                                 /* If there is still a service
2346                                  * process around, wait until
2347                                  * that one quit, too */
2348                                 break;
2349
2350                         case SERVICE_STOP_POST:
2351                         case SERVICE_FINAL_SIGTERM:
2352                         case SERVICE_FINAL_SIGKILL:
2353                                 service_enter_dead(s, success, true);
2354                                 break;
2355
2356                         default:
2357                                 assert_not_reached("Uh, control process died at wrong time.");
2358                         }
2359                 }
2360         }
2361 }
2362
2363 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2364         Service *s = SERVICE(u);
2365
2366         assert(s);
2367         assert(elapsed == 1);
2368
2369         assert(w == &s->timer_watch);
2370
2371         switch (s->state) {
2372
2373         case SERVICE_START_PRE:
2374         case SERVICE_START:
2375                 log_warning("%s operation timed out. Terminating.", u->meta.id);
2376                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2377                 break;
2378
2379         case SERVICE_START_POST:
2380         case SERVICE_RELOAD:
2381                 log_warning("%s operation timed out. Stopping.", u->meta.id);
2382                 service_enter_stop(s, false);
2383                 break;
2384
2385         case SERVICE_STOP:
2386                 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2387                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2388                 break;
2389
2390         case SERVICE_STOP_SIGTERM:
2391                 log_warning("%s stopping timed out. Killing.", u->meta.id);
2392                 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2393                 break;
2394
2395         case SERVICE_STOP_SIGKILL:
2396                 /* Uh, wie sent a SIGKILL and it is still not gone?
2397                  * Must be something we cannot kill, so let's just be
2398                  * weirded out and continue */
2399
2400                 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2401                 service_enter_stop_post(s, false);
2402                 break;
2403
2404         case SERVICE_STOP_POST:
2405                 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2406                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2407                 break;
2408
2409         case SERVICE_FINAL_SIGTERM:
2410                 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2411                 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2412                 break;
2413
2414         case SERVICE_FINAL_SIGKILL:
2415                 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
2416                 service_enter_dead(s, false, true);
2417                 break;
2418
2419         case SERVICE_AUTO_RESTART:
2420                 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2421                 service_enter_restart(s);
2422                 break;
2423
2424         default:
2425                 assert_not_reached("Timeout at wrong time.");
2426         }
2427 }
2428
2429 static void service_cgroup_notify_event(Unit *u) {
2430         Service *s = SERVICE(u);
2431
2432         assert(u);
2433
2434         log_debug("%s: cgroup is empty", u->meta.id);
2435
2436         switch (s->state) {
2437
2438                 /* Waiting for SIGCHLD is usually more interesting,
2439                  * because it includes return codes/signals. Which is
2440                  * why we ignore the cgroup events for most cases,
2441                  * except when we don't know pid which to expect the
2442                  * SIGCHLD for. */
2443
2444         case SERVICE_RUNNING:
2445                 service_enter_running(s, true);
2446                 break;
2447
2448         default:
2449                 ;
2450         }
2451 }
2452
2453 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2454         Service *s = SERVICE(u);
2455         const char *e;
2456
2457         assert(u);
2458
2459         if (s->notify_access == NOTIFY_NONE) {
2460                 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2461                             u->meta.id, (unsigned long) pid);
2462                 return;
2463         }
2464
2465         if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2466                 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2467                             u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2468                 return;
2469         }
2470
2471         log_debug("%s: Got message", u->meta.id);
2472
2473         /* Interpret MAINPID= */
2474         if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2475             (s->state == SERVICE_START ||
2476              s->state == SERVICE_START_POST ||
2477              s->state == SERVICE_RUNNING ||
2478              s->state == SERVICE_RELOAD)) {
2479
2480                 if (parse_pid(e + 8, &pid) < 0)
2481                         log_warning("Failed to parse notification message %s", e);
2482                 else {
2483                         log_debug("%s: got %s", u->meta.id, e);
2484                         service_set_main_pid(s, pid);
2485                 }
2486         }
2487
2488         /* Interpret READY= */
2489         if (s->type == SERVICE_NOTIFY &&
2490             s->state == SERVICE_START &&
2491             strv_find(tags, "READY=1")) {
2492                 log_debug("%s: got READY=1", u->meta.id);
2493
2494                 service_enter_start_post(s);
2495         }
2496
2497         /* Interpret STATUS= */
2498         if ((e = strv_find_prefix(tags, "STATUS="))) {
2499                 char *t;
2500
2501                 if (!(t = strdup(e+7))) {
2502                         log_error("Failed to allocate string.");
2503                         return;
2504                 }
2505
2506                 log_debug("%s: got %s", u->meta.id, e);
2507
2508                 free(s->status_text);
2509                 s->status_text = t;
2510         }
2511 }
2512
2513 static int service_enumerate(Manager *m) {
2514         char **p;
2515         unsigned i;
2516         DIR *d = NULL;
2517         char *path = NULL, *fpath = NULL, *name = NULL;
2518         int r;
2519
2520         assert(m);
2521
2522         STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2523                 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2524                         struct dirent *de;
2525
2526                         free(path);
2527                         path = NULL;
2528                         if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2529                                 r = -ENOMEM;
2530                                 goto finish;
2531                         }
2532
2533                         if (d)
2534                                 closedir(d);
2535
2536                         if (!(d = opendir(path))) {
2537                                 if (errno != ENOENT)
2538                                         log_warning("opendir() failed on %s: %s", path, strerror(errno));
2539
2540                                 continue;
2541                         }
2542
2543                         while ((de = readdir(d))) {
2544                                 Unit *service;
2545                                 int a, b;
2546
2547                                 if (ignore_file(de->d_name))
2548                                         continue;
2549
2550                                 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2551                                         continue;
2552
2553                                 if (strlen(de->d_name) < 4)
2554                                         continue;
2555
2556                                 a = undecchar(de->d_name[1]);
2557                                 b = undecchar(de->d_name[2]);
2558
2559                                 if (a < 0 || b < 0)
2560                                         continue;
2561
2562                                 free(fpath);
2563                                 fpath = NULL;
2564                                 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2565                                         r = -ENOMEM;
2566                                         goto finish;
2567                                 }
2568
2569                                 if (access(fpath, X_OK) < 0) {
2570
2571                                         if (errno != ENOENT)
2572                                                 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2573
2574                                         continue;
2575                                 }
2576
2577                                 free(name);
2578                                 if (!(name = sysv_translate_name(de->d_name + 3))) {
2579                                         r = -ENOMEM;
2580                                         goto finish;
2581                                 }
2582
2583                                 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2584                                         log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2585                                         continue;
2586                                 }
2587
2588                                 if (de->d_name[0] == 'S' &&
2589                                     (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
2590                                         SERVICE(service)->sysv_start_priority =
2591                                                 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2592
2593                                 manager_dispatch_load_queue(m);
2594                                 service = unit_follow_merge(service);
2595
2596                                 /* If this is a native service, rely
2597                                  * on native ways to pull in a
2598                                  * service, don't pull it in via sysv
2599                                  * rcN.d links. */
2600                                 if (service->meta.fragment_path)
2601                                         continue;
2602
2603                                 if (de->d_name[0] == 'S') {
2604
2605                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2606                                                 goto finish;
2607
2608                                 } else if (de->d_name[0] == 'K' &&
2609                                            (rcnd_table[i].type == RUNLEVEL_DOWN ||
2610                                             rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2611
2612                                         /* We honour K links only for
2613                                          * halt/reboot. For the normal
2614                                          * runlevels we assume the
2615                                          * stop jobs will be
2616                                          * implicitly added by the
2617                                          * core logic. Also, we don't
2618                                          * really distuingish here
2619                                          * between the runlevels 0 and
2620                                          * 6 and just add them to the
2621                                          * special shutdown target. On
2622                                          * SUSE the boot.d/ runlevel
2623                                          * is also used for shutdown,
2624                                          * so we add links for that
2625                                          * too to the shutdown
2626                                          * target.*/
2627
2628                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2629                                                 goto finish;
2630                                 }
2631                         }
2632                 }
2633
2634         r = 0;
2635
2636 finish:
2637         free(path);
2638         free(fpath);
2639         free(name);
2640
2641         if (d)
2642                 closedir(d);
2643
2644         return r;
2645 }
2646
2647 static void service_bus_name_owner_change(
2648                 Unit *u,
2649                 const char *name,
2650                 const char *old_owner,
2651                 const char *new_owner) {
2652
2653         Service *s = SERVICE(u);
2654
2655         assert(s);
2656         assert(name);
2657
2658         assert(streq(s->bus_name, name));
2659         assert(old_owner || new_owner);
2660
2661         if (old_owner && new_owner)
2662                 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2663         else if (old_owner)
2664                 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2665         else
2666                 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2667
2668         s->bus_name_good = !!new_owner;
2669
2670         if (s->type == SERVICE_DBUS) {
2671
2672                 /* service_enter_running() will figure out what to
2673                  * do */
2674                 if (s->state == SERVICE_RUNNING)
2675                         service_enter_running(s, true);
2676                 else if (s->state == SERVICE_START && new_owner)
2677                         service_enter_start_post(s);
2678
2679         } else if (new_owner &&
2680                    s->main_pid <= 0 &&
2681                    (s->state == SERVICE_START ||
2682                     s->state == SERVICE_START_POST ||
2683                     s->state == SERVICE_RUNNING ||
2684                     s->state == SERVICE_RELOAD)) {
2685
2686                 /* Try to acquire PID from bus service */
2687                 log_debug("Trying to acquire PID from D-Bus name...");
2688
2689                 bus_query_pid(u->meta.manager, name);
2690         }
2691 }
2692
2693 static void service_bus_query_pid_done(
2694                 Unit *u,
2695                 const char *name,
2696                 pid_t pid) {
2697
2698         Service *s = SERVICE(u);
2699
2700         assert(s);
2701         assert(name);
2702
2703         log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2704
2705         if (s->main_pid <= 0 &&
2706             (s->state == SERVICE_START ||
2707              s->state == SERVICE_START_POST ||
2708              s->state == SERVICE_RUNNING ||
2709              s->state == SERVICE_RELOAD))
2710                 service_set_main_pid(s, pid);
2711 }
2712
2713 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
2714         assert(s);
2715         assert(fd >= 0);
2716
2717         /* This is called by the socket code when instantiating a new
2718          * service for a stream socket and the socket needs to be
2719          * configured. */
2720
2721         if (s->meta.load_state != UNIT_LOADED)
2722                 return -EINVAL;
2723
2724         if (s->socket_fd >= 0)
2725                 return -EBUSY;
2726
2727         if (s->state != SERVICE_DEAD)
2728                 return -EAGAIN;
2729
2730         s->socket_fd = fd;
2731         s->got_socket_fd = true;
2732         s->socket = sock;
2733
2734         return 0;
2735 }
2736
2737 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2738         [SERVICE_DEAD] = "dead",
2739         [SERVICE_START_PRE] = "start-pre",
2740         [SERVICE_START] = "start",
2741         [SERVICE_START_POST] = "start-post",
2742         [SERVICE_RUNNING] = "running",
2743         [SERVICE_EXITED] = "exited",
2744         [SERVICE_RELOAD] = "reload",
2745         [SERVICE_STOP] = "stop",
2746         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2747         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2748         [SERVICE_STOP_POST] = "stop-post",
2749         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2750         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2751         [SERVICE_MAINTENANCE] = "maintenance",
2752         [SERVICE_AUTO_RESTART] = "auto-restart",
2753 };
2754
2755 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2756
2757 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2758         [SERVICE_ONCE] = "once",
2759         [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2760         [SERVICE_RESTART_ALWAYS] = "restart-always",
2761 };
2762
2763 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2764
2765 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2766         [SERVICE_SIMPLE] = "simple",
2767         [SERVICE_FORKING] = "forking",
2768         [SERVICE_FINISH] = "finish",
2769         [SERVICE_DBUS] = "dbus",
2770         [SERVICE_NOTIFY] = "notify"
2771 };
2772
2773 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2774
2775 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2776         [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2777         [SERVICE_EXEC_START] = "ExecStart",
2778         [SERVICE_EXEC_START_POST] = "ExecStartPost",
2779         [SERVICE_EXEC_RELOAD] = "ExecReload",
2780         [SERVICE_EXEC_STOP] = "ExecStop",
2781         [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2782 };
2783
2784 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2785
2786 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2787         [NOTIFY_NONE] = "none",
2788         [NOTIFY_MAIN] = "main",
2789         [NOTIFY_ALL] = "all"
2790 };
2791
2792 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2793
2794 const UnitVTable service_vtable = {
2795         .suffix = ".service",
2796         .show_status = true,
2797
2798         .init = service_init,
2799         .done = service_done,
2800         .load = service_load,
2801
2802         .coldplug = service_coldplug,
2803
2804         .dump = service_dump,
2805
2806         .start = service_start,
2807         .stop = service_stop,
2808         .reload = service_reload,
2809
2810         .can_reload = service_can_reload,
2811
2812         .serialize = service_serialize,
2813         .deserialize_item = service_deserialize_item,
2814
2815         .active_state = service_active_state,
2816         .sub_state_to_string = service_sub_state_to_string,
2817
2818         .check_gc = service_check_gc,
2819         .check_snapshot = service_check_snapshot,
2820
2821         .sigchld_event = service_sigchld_event,
2822         .timer_event = service_timer_event,
2823
2824         .cgroup_notify_empty = service_cgroup_notify_event,
2825         .notify_message = service_notify_message,
2826
2827         .bus_name_owner_change = service_bus_name_owner_change,
2828         .bus_query_pid_done = service_bus_query_pid_done,
2829
2830         .bus_message_handler = bus_service_message_handler,
2831
2832         .enumerate = service_enumerate
2833 };