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
  34 #define COMMENTS "#;\n"
  35 #define NEWLINES "\n\r"
  36 #define LINE_MAX 4096
  37
  38 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
  39         [SERVICE_DEAD] = UNIT_INACTIVE,
  40         [SERVICE_START_PRE] = UNIT_ACTIVATING,
  41         [SERVICE_START] = UNIT_ACTIVATING,
  42         [SERVICE_START_POST] = UNIT_ACTIVATING,
  43         [SERVICE_RUNNING] = UNIT_ACTIVE,
  44         [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
  45         [SERVICE_STOP] = UNIT_DEACTIVATING,
  46         [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
  47         [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
  48         [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
  49         [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
  50         [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
  51         [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
  52         [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
  53 };
  54
  55 static void service_done(Unit *u) {
  56         Service *s = SERVICE(u);
  57
  58         assert(s);
  59
  60         free(s->pid_file);
  61         s->pid_file = NULL;
  62
  63         free(s->sysv_path);
  64         s->sysv_path = NULL;
  65
  66         exec_context_done(&s->exec_context);
  67         exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
  68         s->control_command = NULL;
  69
  70         /* This will leak a process, but at least no memory or any of
  71          * our resources */
  72         if (s->main_pid > 0) {
  73                 unit_unwatch_pid(u, s->main_pid);
  74                 s->main_pid = 0;
  75         }
  76
  77         if (s->control_pid > 0) {
  78                 unit_unwatch_pid(u, s->control_pid);
  79                 s->control_pid = 0;
  80         }
  81
  82         unit_unwatch_timer(u, &s->timer_watch);
  83 }
  84
  85 static int sysv_translate_name(const char *name, char **_r) {
  86
  87         static const char * const table[] = {
  88                 "$local_fs",  SPECIAL_LOCAL_FS_TARGET,
  89                 "$network",   SPECIAL_NETWORK_TARGET,
  90                 "$named",     SPECIAL_NSS_LOOKUP_TARGET,
  91                 "$portmap",   SPECIAL_RPCBIND_TARGET,
  92                 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
  93                 "$syslog",    SPECIAL_SYSLOG_TARGET,
  94                 "$time",      SPECIAL_RTC_SET_TARGET
  95         };
  96
  97         unsigned i;
  98         char *r;
  99
 100         for (i = 0; i < ELEMENTSOF(table); i += 2)
 101                 if (streq(table[i], name)) {
 102                         if (!(r = strdup(table[i+1])))
 103                                 return -ENOMEM;
 104
 105                         goto finish;
 106                 }
 107
 108         if (*name == '$')
 109                 return 0;
 110
 111         if (asprintf(&r, "%s.service", name) < 0)
 112                 return -ENOMEM;
 113
 114 finish:
 115
 116         if (_r)
 117                 *_r = r;
 118
 119         return 1;
 120 }
 121
 122 static int sysv_chkconfig_order(Service *s) {
 123         Meta *other;
 124         int r;
 125
 126         assert(s);
 127
 128         if (s->sysv_start_priority < 0)
 129                 return 0;
 130
 131         /* If no LSB header is found we try to order init scripts via
 132          * the start priority of the chkconfig header. */
 133
 134         LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
 135                 Service *t;
 136                 UnitDependency d;
 137
 138                 t = (Service*) other;
 139
 140                 if (s == t)
 141                         continue;
 142
 143                 if (t->sysv_start_priority < 0)
 144                         continue;
 145
 146                 if (t->sysv_start_priority < s->sysv_start_priority)
 147                         d = UNIT_AFTER;
 148                 else if (t->sysv_start_priority > s->sysv_start_priority)
 149                         d = UNIT_BEFORE;
 150                 else
 151                         continue;
 152
 153                 /* FIXME: Maybe we should compare the name here lexicographically? */
 154
 155                 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
 156                         return r;
 157         }
 158
 159         return 0;
 160 }
 161
 162 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
 163         ExecCommand *c;
 164
 165         if (!(c = new0(ExecCommand, 1)))
 166                 return NULL;
 167
 168         if (!(c->path = strdup(path))) {
 169                 free(c);
 170                 return NULL;
 171         }
 172
 173         if (!(c->argv = strv_new(path, arg1, NULL))) {
 174                 free(c->path);
 175                 free(c);
 176                 return NULL;
 177         }
 178
 179         return c;
 180 }
 181
 182 static int sysv_exec_commands(Service *s) {
 183         ExecCommand *c;
 184
 185         assert(s);
 186         assert(s->sysv_path);
 187
 188         if (!(c = exec_command_new(s->sysv_path, "start")))
 189                 return -ENOMEM;
 190         exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
 191
 192         if (!(c = exec_command_new(s->sysv_path, "stop")))
 193                 return -ENOMEM;
 194         exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
 195
 196         if (!(c = exec_command_new(s->sysv_path, "reload")))
 197                 return -ENOMEM;
 198         exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
 199
 200         return 0;
 201 }
 202
 203 static int service_load_sysv_path(Service *s, const char *path) {
 204         FILE *f;
 205         Unit *u;
 206         unsigned line = 0;
 207         int r;
 208         enum {
 209                 NORMAL,
 210                 DESCRIPTION,
 211                 LSB,
 212                 LSB_DESCRIPTION
 213         } state = NORMAL;
 214         bool has_lsb = false;
 215
 216         u = UNIT(s);
 217
 218         if (!(f = fopen(path, "re"))) {
 219                 r = errno == ENOENT ? 0 : -errno;
 220                 goto finish;
 221         }
 222
 223         s->type = SERVICE_FORKING;
 224         s->restart = SERVICE_ONCE;
 225
 226         free(s->sysv_path);
 227         if (!(s->sysv_path = strdup(path))) {
 228                 r = -ENOMEM;
 229                 goto finish;
 230         }
 231
 232         while (!feof(f)) {
 233                 char l[LINE_MAX], *t;
 234
 235                 if (!fgets(l, sizeof(l), f)) {
 236                         if (feof(f))
 237                                 break;
 238
 239                         r = -errno;
 240                         log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
 241                         goto finish;
 242                 }
 243
 244                 line++;
 245
 246                 t = strstrip(l);
 247                 if (*t != '#')
 248                         continue;
 249
 250                 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
 251                         state = LSB;
 252                         has_lsb = true;
 253                         continue;
 254                 }
 255
 256                 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
 257                         state = NORMAL;
 258                         continue;
 259                 }
 260
 261                 t++;
 262                 t += strspn(t, WHITESPACE);
 263
 264                 if (state == NORMAL) {
 265
 266                         /* Try to parse Red Hat style chkconfig headers */
 267
 268                         if (startswith(t, "chkconfig:")) {
 269                                 int start_priority;
 270
 271                                 state = NORMAL;
 272
 273                                 if (sscanf(t+10, "%*15s %i %*i",
 274                                            &start_priority) != 1) {
 275
 276                                         log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
 277                                         continue;
 278                                 }
 279
 280                                 if (start_priority < 0 || start_priority > 99) {
 281                                         log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
 282                                         continue;
 283                                 }
 284
 285                                 s->sysv_start_priority = start_priority;
 286
 287                         } else if (startswith(t, "description:")) {
 288
 289                                 size_t k = strlen(t);
 290                                 char *d;
 291
 292                                 if (t[k-1] == '\\') {
 293                                         state = DESCRIPTION;
 294                                         t[k-1] = 0;
 295                                 }
 296
 297                                 if (!(d = strdup(strstrip(t+12)))) {
 298                                         r = -ENOMEM;
 299                                         goto finish;
 300                                 }
 301
 302                                 free(u->meta.description);
 303                                 u->meta.description = d;
 304
 305                         } else if (startswith(t, "pidfile:")) {
 306
 307                                 char *fn;
 308
 309                                 state = NORMAL;
 310
 311                                 fn = strstrip(t+8);
 312                                 if (!path_is_absolute(fn)) {
 313                                         log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
 314                                         continue;
 315                                 }
 316
 317                                 if (!(fn = strdup(fn))) {
 318                                         r = -ENOMEM;
 319                                         goto finish;
 320                                 }
 321
 322                                 free(s->pid_file);
 323                                 s->pid_file = fn;
 324                         }
 325
 326                 } else if (state == DESCRIPTION) {
 327
 328                         /* Try to parse Red Hat style description
 329                          * continuation */
 330
 331                         size_t k = strlen(t);
 332                         char *d;
 333
 334                         if (t[k-1] == '\\')
 335                                 t[k-1] = 0;
 336                         else
 337                                 state = NORMAL;
 338
 339                         assert(u->meta.description);
 340                         if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
 341                                 r = -ENOMEM;
 342                                 goto finish;
 343                         }
 344
 345                         free(u->meta.description);
 346                         u->meta.description = d;
 347
 348                 } else if (state == LSB || state == LSB_DESCRIPTION) {
 349
 350                         if (startswith(t, "Provides:")) {
 351                                 char *i, *w;
 352                                 size_t z;
 353
 354                                 state = LSB;
 355
 356                                 FOREACH_WORD(w, z, t+9, i) {
 357                                         char *n, *m;
 358
 359                                         if (!(n = strndup(w, z))) {
 360                                                 r = -ENOMEM;
 361                                                 goto finish;
 362                                         }
 363
 364                                         r = sysv_translate_name(n, &m);
 365                                         free(n);
 366
 367                                         if (r < 0)
 368                                                 goto finish;
 369
 370                                         if (r == 0)
 371                                                 continue;
 372
 373                                         r = unit_add_name(u, m);
 374                                         free(m);
 375
 376                                         if (r < 0)
 377                                                 goto finish;
 378                                 }
 379
 380                         } else if (startswith(t, "Required-Start:") ||
 381                                    startswith(t, "Should-Start:")) {
 382                                 char *i, *w;
 383                                 size_t z;
 384
 385                                 state = LSB;
 386
 387                                 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
 388                                         char *n, *m;
 389
 390                                         if (!(n = strndup(w, z))) {
 391                                                 r = -ENOMEM;
 392                                                 goto finish;
 393                                         }
 394
 395                                         r = sysv_translate_name(n, &m);
 396                                         free(n);
 397
 398                                         if (r < 0)
 399                                                 goto finish;
 400
 401                                         if (r == 0)
 402                                                 continue;
 403
 404                                         if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
 405                                                 free(m);
 406                                                 goto finish;
 407                                         }
 408
 409                                         r = unit_add_dependency_by_name(
 410                                                         u,
 411                                                         startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
 412                                                         m);
 413                                         free(m);
 414
 415                                         if (r < 0)
 416                                                 goto finish;
 417                                 }
 418
 419                         } else if (startswith(t, "Description:")) {
 420                                 char *d;
 421
 422                                 state = LSB_DESCRIPTION;
 423
 424                                 if (!(d = strdup(strstrip(t+12)))) {
 425                                         r = -ENOMEM;
 426                                         goto finish;
 427                                 }
 428
 429                                 free(u->meta.description);
 430                                 u->meta.description = d;
 431
 432                         } else if (startswith(t, "Short-Description:") && !u->meta.description) {
 433                                 char *d;
 434
 435                                 /* We use the short description only
 436                                  * if no long description is set. */
 437
 438                                 state = LSB;
 439
 440                                 if (!(d = strdup(strstrip(t+18)))) {
 441                                         r = -ENOMEM;
 442                                         goto finish;
 443                                 }
 444
 445                                 free(u->meta.description);
 446                                 u->meta.description = d;
 447
 448                         } else if (state == LSB_DESCRIPTION) {
 449
 450                                 if (startswith(l, "#\t") || startswith(l, "#  ")) {
 451                                         char *d;
 452
 453                                         assert(u->meta.description);
 454                                         if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
 455                                                 r = -ENOMEM;
 456                                                 goto finish;
 457                                         }
 458
 459                                         free(u->meta.description);
 460                                         u->meta.description = d;
 461                                 } else
 462                                         state = LSB;
 463                         }
 464                 }
 465         }
 466
 467         /* If the init script has no LSB header, then let's
 468          * enforce the ordering via the chkconfig
 469          * priorities */
 470
 471         if (!has_lsb)
 472                 if ((r = sysv_chkconfig_order(s)) < 0)
 473                         goto finish;
 474
 475         if ((r = sysv_exec_commands(s)) < 0)
 476                 goto finish;
 477
 478         r = 1;
 479
 480 finish:
 481
 482         if (f)
 483                 fclose(f);
 484
 485         return r;
 486 }
 487
 488 static int service_load_sysv_name(Service *s, const char *name) {
 489         char **p;
 490
 491         assert(s);
 492         assert(name);
 493
 494         STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
 495                 char *path;
 496                 int r;
 497
 498                 if (asprintf(&path, "%s/%s", *p, name) < 0)
 499                         return -ENOMEM;
 500
 501                 assert(endswith(path, ".service"));
 502                 path[strlen(path)-8] = 0;
 503
 504                 r = service_load_sysv_path(s, path);
 505                 free(path);
 506
 507                 if (r >= 0)
 508                         return r;
 509         }
 510
 511         return 0;
 512 }
 513
 514 static int service_load_sysv(Service *s) {
 515         const char *t;
 516         Iterator i;
 517         int r;
 518
 519         assert(s);
 520
 521         /* Load service data from SysV init scripts, preferably with
 522          * LSB headers ... */
 523
 524         if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
 525                 return 0;
 526
 527         if ((t = unit_id(UNIT(s))))
 528                 if ((r = service_load_sysv_name(s, t)) != 0)
 529                         return r;
 530
 531         SET_FOREACH(t, UNIT(s)->meta.names, i)
 532                 if ((r == service_load_sysv_name(s, t)) != 0)
 533                         return r;
 534
 535         return 0;
 536 }
 537
 538 static int service_init(Unit *u) {
 539         int r;
 540         Service *s = SERVICE(u);
 541
 542         assert(s);
 543
 544         /* First, reset everything to the defaults, in case this is a
 545          * reload */
 546
 547         s->type = 0;
 548         s->restart = 0;
 549
 550         s->timeout_usec = DEFAULT_TIMEOUT_USEC;
 551         s->restart_usec = DEFAULT_RESTART_USEC;
 552
 553         exec_context_init(&s->exec_context);
 554
 555         s->timer_watch.type = WATCH_INVALID;
 556
 557         s->state = SERVICE_DEAD;
 558
 559         s->sysv_start_priority = -1;
 560
 561         RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
 562
 563         /* Load a .service file */
 564         if ((r = unit_load_fragment(u)) < 0) {
 565                 service_done(u);
 566                 return r;
 567         }
 568
 569         /* Load a classic init script as a fallback, if we couldn*t find anything */
 570         if (r == 0)
 571                 if ((r = service_load_sysv(s)) <= 0) {
 572                         service_done(u);
 573                         return r < 0 ? r : -ENOENT;
 574                 }
 575
 576         /* Load dropin directory data */
 577         if ((r = unit_load_dropin(u)) < 0) {
 578                 service_done(u);
 579                 return r;
 580         }
 581
 582         return 0;
 583 }
 584
 585 static void service_dump(Unit *u, FILE *f, const char *prefix) {
 586
 587         ServiceExecCommand c;
 588         Service *s = SERVICE(u);
 589         const char *prefix2;
 590         char *p2;
 591
 592         assert(s);
 593
 594         p2 = strappend(prefix, "\t");
 595         prefix2 = p2 ? p2 : prefix;
 596
 597         fprintf(f,
 598                 "%sService State: %s\n",
 599                 prefix, service_state_to_string(s->state));
 600
 601         if (s->pid_file)
 602                 fprintf(f,
 603                         "%sPIDFile: %s\n",
 604                         prefix, s->pid_file);
 605
 606
 607         exec_context_dump(&s->exec_context, f, prefix);
 608
 609         for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
 610
 611                 if (!s->exec_command[c])
 612                         continue;
 613
 614                 fprintf(f, "%s→ %s:\n",
 615                         prefix, service_exec_command_to_string(c));
 616
 617                 exec_command_dump_list(s->exec_command[c], f, prefix2);
 618         }
 619
 620         if (s->sysv_path)
 621                 fprintf(f,
 622                         "%sSysV Init Script Path: %s\n",
 623                         prefix, s->sysv_path);
 624
 625         if (s->sysv_start_priority >= 0)
 626                 fprintf(f,
 627                         "%sSysV Start Priority: %i\n",
 628                         prefix, s->sysv_start_priority);
 629
 630         free(p2);
 631 }
 632
 633 static int service_load_pid_file(Service *s) {
 634         char *k;
 635         unsigned long p;
 636         int r;
 637
 638         assert(s);
 639
 640         if (s->main_pid_known)
 641                 return 0;
 642
 643         if (!s->pid_file)
 644                 return -ENOENT;
 645
 646         if ((r = read_one_line_file(s->pid_file, &k)) < 0)
 647                 return r;
 648
 649         if ((r = safe_atolu(k, &p)) < 0) {
 650                 free(k);
 651                 return r;
 652         }
 653
 654         if ((unsigned long) (pid_t) p != p)
 655                 return -ERANGE;
 656
 657         s->main_pid = p;
 658         s->main_pid_known = true;
 659
 660         return 0;
 661 }
 662
 663 static int service_get_sockets(Service *s, Set **_set) {
 664         Set *set;
 665         Iterator i;
 666         char *t;
 667         int r;
 668
 669         assert(s);
 670         assert(_set);
 671
 672         /* Collects all Socket objects that belong to this
 673          * service. Note that a service might have multiple sockets
 674          * via multiple names. */
 675
 676         if (!(set = set_new(NULL, NULL)))
 677                 return -ENOMEM;
 678
 679         SET_FOREACH(t, UNIT(s)->meta.names, i) {
 680                 char *k;
 681                 Unit *p;
 682
 683                 /* Look for all socket objects that go by any of our
 684                  * units and collect their fds */
 685
 686                 if (!(k = unit_name_change_suffix(t, ".socket"))) {
 687                         r = -ENOMEM;
 688                         goto fail;
 689                 }
 690
 691                 p = manager_get_unit(UNIT(s)->meta.manager, k);
 692                 free(k);
 693
 694                 if (!p) continue;
 695
 696                 if ((r = set_put(set, p)) < 0)
 697                         goto fail;
 698         }
 699
 700         *_set = set;
 701         return 0;
 702
 703 fail:
 704         set_free(set);
 705         return r;
 706 }
 707
 708
 709 static int service_notify_sockets(Service *s) {
 710         Iterator i;
 711         Set *set;
 712         Socket *sock;
 713         int r;
 714
 715         assert(s);
 716
 717         /* Notifies all our sockets when we die */
 718
 719         if ((r = service_get_sockets(s, &set)) < 0)
 720                 return r;
 721
 722         SET_FOREACH(sock, set, i)
 723                 socket_notify_service_dead(sock);
 724
 725         set_free(set);
 726
 727         return 0;
 728 }
 729
 730 static void service_set_state(Service *s, ServiceState state) {
 731         ServiceState old_state;
 732         assert(s);
 733
 734         old_state = s->state;
 735         s->state = state;
 736
 737         if (state != SERVICE_START_PRE &&
 738             state != SERVICE_START &&
 739             state != SERVICE_START_POST &&
 740             state != SERVICE_RELOAD &&
 741             state != SERVICE_STOP &&
 742             state != SERVICE_STOP_SIGTERM &&
 743             state != SERVICE_STOP_SIGKILL &&
 744             state != SERVICE_STOP_POST &&
 745             state != SERVICE_FINAL_SIGTERM &&
 746             state != SERVICE_FINAL_SIGKILL &&
 747             state != SERVICE_AUTO_RESTART)
 748                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
 749
 750         if (state != SERVICE_START &&
 751             state != SERVICE_START_POST &&
 752             state != SERVICE_RUNNING &&
 753             state != SERVICE_RELOAD &&
 754             state != SERVICE_STOP &&
 755             state != SERVICE_STOP_SIGTERM &&
 756             state != SERVICE_STOP_SIGKILL)
 757                 if (s->main_pid > 0) {
 758                         unit_unwatch_pid(UNIT(s), s->main_pid);
 759                         s->main_pid = 0;
 760                 }
 761
 762         if (state != SERVICE_START_PRE &&
 763             state != SERVICE_START &&
 764             state != SERVICE_START_POST &&
 765             state != SERVICE_RELOAD &&
 766             state != SERVICE_STOP &&
 767             state != SERVICE_STOP_SIGTERM &&
 768             state != SERVICE_STOP_SIGKILL &&
 769             state != SERVICE_STOP_POST &&
 770             state != SERVICE_FINAL_SIGTERM &&
 771             state != SERVICE_FINAL_SIGKILL)
 772                 if (s->control_pid > 0) {
 773                         unit_unwatch_pid(UNIT(s), s->control_pid);
 774                         s->control_pid = 0;
 775                 }
 776
 777         if (state != SERVICE_START_PRE &&
 778             state != SERVICE_START &&
 779             state != SERVICE_START_POST &&
 780             state != SERVICE_RELOAD &&
 781             state != SERVICE_STOP &&
 782             state != SERVICE_STOP_POST)
 783                 s->control_command = NULL;
 784
 785         if (state == SERVICE_DEAD ||
 786             state == SERVICE_STOP ||
 787             state == SERVICE_STOP_SIGTERM ||
 788             state == SERVICE_STOP_SIGKILL ||
 789             state == SERVICE_STOP_POST ||
 790             state == SERVICE_FINAL_SIGTERM ||
 791             state == SERVICE_FINAL_SIGKILL ||
 792             state == SERVICE_MAINTAINANCE ||
 793             state == SERVICE_AUTO_RESTART)
 794                 service_notify_sockets(s);
 795
 796         log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
 797
 798         unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
 799 }
 800
 801 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
 802         Iterator i;
 803         int r;
 804         int *rfds = NULL;
 805         unsigned rn_fds = 0;
 806         Set *set;
 807         Socket *sock;
 808
 809         assert(s);
 810         assert(fds);
 811         assert(n_fds);
 812
 813         if ((r = service_get_sockets(s, &set)) < 0)
 814                 return r;
 815
 816         SET_FOREACH(sock, set, i) {
 817                 int *cfds;
 818                 unsigned cn_fds;
 819
 820                 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
 821                         goto fail;
 822
 823                 if (!cfds)
 824                         continue;
 825
 826                 if (!rfds) {
 827                         rfds = cfds;
 828                         rn_fds = cn_fds;
 829                 } else {
 830                         int *t;
 831
 832                         if (!(t = new(int, rn_fds+cn_fds))) {
 833                                 free(cfds);
 834                                 r = -ENOMEM;
 835                                 goto fail;
 836                         }
 837
 838                         memcpy(t, rfds, rn_fds);
 839                         memcpy(t+rn_fds, cfds, cn_fds);
 840                         free(rfds);
 841                         free(cfds);
 842
 843                         rfds = t;
 844                         rn_fds = rn_fds+cn_fds;
 845                 }
 846         }
 847
 848         *fds = rfds;
 849         *n_fds = rn_fds;
 850
 851         set_free(set);
 852
 853         return 0;
 854
 855 fail:
 856         set_free(set);
 857         free(rfds);
 858
 859         return r;
 860 }
 861
 862 static int service_spawn(Service *s, ExecCommand *c, bool timeout, bool pass_fds, pid_t *_pid) {
 863         pid_t pid;
 864         int r;
 865         int *fds = NULL;
 866         unsigned n_fds = 0;
 867
 868         assert(s);
 869         assert(c);
 870         assert(_pid);
 871
 872         if (pass_fds)
 873                 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
 874                         goto fail;
 875
 876         if (timeout) {
 877                 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
 878                         goto fail;
 879         } else
 880                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
 881
 882         if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0)
 883                 goto fail;
 884
 885         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
 886                 /* FIXME: we need to do something here */
 887                 goto fail;
 888
 889         free(fds);
 890         *_pid = pid;
 891
 892         return 0;
 893
 894 fail:
 895         free(fds);
 896
 897         if (timeout)
 898                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
 899
 900         return r;
 901 }
 902
 903 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
 904         int r;
 905         assert(s);
 906
 907         if (!success)
 908                 s->failure = true;
 909
 910         if (allow_restart &&
 911             (s->restart == SERVICE_RESTART_ALWAYS ||
 912              (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
 913
 914                 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
 915                         goto fail;
 916
 917                 service_set_state(s, SERVICE_AUTO_RESTART);
 918         } else
 919                 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
 920
 921         return;
 922
 923 fail:
 924         log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
 925         service_enter_dead(s, false, false);
 926 }
 927
 928 static void service_enter_signal(Service *s, ServiceState state, bool success);
 929
 930 static void service_enter_stop_post(Service *s, bool success) {
 931         int r;
 932         assert(s);
 933
 934         if (!success)
 935                 s->failure = true;
 936
 937         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
 938                 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
 939                         goto fail;
 940
 941
 942         service_set_state(s, SERVICE_STOP_POST);
 943
 944         if (!s->control_command)
 945                 service_enter_dead(s, true, true);
 946
 947         return;
 948
 949 fail:
 950         log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
 951         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
 952 }
 953
 954 static void service_enter_signal(Service *s, ServiceState state, bool success) {
 955         int r;
 956         bool sent = false;
 957
 958         assert(s);
 959
 960         if (!success)
 961                 s->failure = true;
 962
 963         if (s->main_pid > 0 || s->control_pid > 0) {
 964                 int sig;
 965
 966                 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
 967
 968                 r = 0;
 969                 if (s->main_pid > 0) {
 970                         if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
 971                                 r = -errno;
 972                         else
 973                                 sent = true;
 974                 }
 975
 976                 if (s->control_pid > 0) {
 977                         if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
 978                                 r = -errno;
 979                         else
 980                                 sent = true;
 981                 }
 982
 983                 if (r < 0)
 984                         goto fail;
 985         }
 986
 987         service_set_state(s, state);
 988
 989         if (s->main_pid <= 0 && s->control_pid <= 0)
 990                 service_enter_dead(s, true, true);
 991
 992         return;
 993
 994 fail:
 995         log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
 996
 997         if (sent)  {
 998                 s->failure = true;
 999                 service_set_state(s, state);
1000         } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1001                 service_enter_stop_post(s, false);
1002         else
1003                 service_enter_dead(s, false, true);
1004 }
1005
1006 static void service_enter_stop(Service *s, bool success) {
1007         int r;
1008         assert(s);
1009
1010         if (!success)
1011                 s->failure = true;
1012
1013         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
1014                 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1015                         goto fail;
1016
1017         service_set_state(s, SERVICE_STOP);
1018
1019         if (!s->control_command)
1020                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1021
1022         return;
1023
1024 fail:
1025         log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
1026         service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1027 }
1028
1029 static void service_enter_start_post(Service *s) {
1030         int r;
1031         assert(s);
1032
1033         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
1034                 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1035                         goto fail;
1036
1037
1038         service_set_state(s, SERVICE_START_POST);
1039
1040         if (!s->control_command)
1041                 service_set_state(s, SERVICE_RUNNING);
1042
1043         return;
1044
1045 fail:
1046         log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
1047         service_enter_stop(s, false);
1048 }
1049
1050 static void service_enter_start(Service *s) {
1051         pid_t pid;
1052         int r;
1053
1054         assert(s);
1055
1056         assert(s->exec_command[SERVICE_EXEC_START]);
1057         assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1058
1059         if ((r = service_spawn(s, s->exec_command[SERVICE_EXEC_START], s->type == SERVICE_FORKING, true, &pid)) < 0)
1060                 goto fail;
1061
1062         service_set_state(s, SERVICE_START);
1063
1064         if (s->type == SERVICE_SIMPLE) {
1065                 /* For simple services we immediately start
1066                  * the START_POST binaries. */
1067
1068                 s->main_pid = pid;
1069                 s->main_pid_known = true;
1070                 service_enter_start_post(s);
1071
1072         } else  if (s->type == SERVICE_FORKING) {
1073
1074                 /* For forking services we wait until the start
1075                  * process exited. */
1076
1077                 s->control_pid = pid;
1078                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1079         } else if (s->type == SERVICE_FINISH) {
1080
1081                 /* For finishing services we wait until the start
1082                  * process exited, too, but it is our main process. */
1083
1084                 s->main_pid = pid;
1085                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1086         } else
1087                 assert_not_reached("Unknown service type");
1088
1089         return;
1090
1091 fail:
1092         log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
1093         service_enter_stop(s, false);
1094 }
1095
1096 static void service_enter_start_pre(Service *s) {
1097         int r;
1098
1099         assert(s);
1100
1101         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
1102                 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1103                         goto fail;
1104
1105         service_set_state(s, SERVICE_START_PRE);
1106
1107         if (!s->control_command)
1108                 service_enter_start(s);
1109
1110         return;
1111
1112 fail:
1113         log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
1114         service_enter_dead(s, false, true);
1115 }
1116
1117 static void service_enter_restart(Service *s) {
1118         int r;
1119         assert(s);
1120
1121         if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1122                 goto fail;
1123
1124         log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
1125         service_enter_dead(s, true, false);
1126         return;
1127
1128 fail:
1129
1130         log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
1131         service_enter_dead(s, false, false);
1132 }
1133
1134 static void service_enter_reload(Service *s) {
1135         int r;
1136
1137         assert(s);
1138
1139         if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
1140                 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1141                         goto fail;
1142
1143         service_set_state(s, SERVICE_RELOAD);
1144
1145         if (!s->control_command)
1146                 service_set_state(s, SERVICE_RUNNING);
1147
1148         return;
1149
1150 fail:
1151         log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
1152         service_enter_stop(s, false);
1153 }
1154
1155 static void service_run_next(Service *s, bool success) {
1156         int r;
1157
1158         assert(s);
1159         assert(s->control_command);
1160         assert(s->control_command->command_next);
1161
1162         if (!success)
1163                 s->failure = true;
1164
1165         s->control_command = s->control_command->command_next;
1166
1167         if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1168                 goto fail;
1169
1170         return;
1171
1172 fail:
1173         log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
1174
1175         if (s->state == SERVICE_STOP)
1176                 service_enter_stop_post(s, false);
1177         else if (s->state == SERVICE_STOP_POST)
1178                 service_enter_dead(s, false, true);
1179         else
1180                 service_enter_stop(s, false);
1181 }
1182
1183 static int service_start(Unit *u) {
1184         Service *s = SERVICE(u);
1185
1186         assert(s);
1187
1188         /* We cannot fulfill this request right now, try again later
1189          * please! */
1190         if (s->state == SERVICE_STOP ||
1191             s->state == SERVICE_STOP_SIGTERM ||
1192             s->state == SERVICE_STOP_SIGKILL ||
1193             s->state == SERVICE_STOP_POST ||
1194             s->state == SERVICE_FINAL_SIGTERM ||
1195             s->state == SERVICE_FINAL_SIGKILL)
1196                 return -EAGAIN;
1197
1198         /* Already on it! */
1199         if (s->state == SERVICE_START_PRE ||
1200             s->state == SERVICE_START ||
1201             s->state == SERVICE_START_POST)
1202                 return 0;
1203
1204         assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1205
1206         /* Make sure we don't enter a busy loop of some kind. */
1207         if (!ratelimit_test(&s->ratelimit)) {
1208                 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1209                 return -EAGAIN;
1210         }
1211
1212         s->failure = false;
1213         s->main_pid_known = false;
1214
1215         service_enter_start_pre(s);
1216         return 0;
1217 }
1218
1219 static int service_stop(Unit *u) {
1220         Service *s = SERVICE(u);
1221
1222         assert(s);
1223
1224         if (s->state == SERVICE_START_PRE ||
1225             s->state == SERVICE_START ||
1226             s->state == SERVICE_START_POST ||
1227             s->state == SERVICE_RELOAD)
1228                 return -EAGAIN;
1229
1230         if (s->state == SERVICE_AUTO_RESTART) {
1231                 service_set_state(s, SERVICE_DEAD);
1232                 return 0;
1233         }
1234
1235         assert(s->state == SERVICE_RUNNING);
1236
1237         service_enter_stop(s, true);
1238         return 0;
1239 }
1240
1241 static int service_reload(Unit *u) {
1242         Service *s = SERVICE(u);
1243
1244         assert(s);
1245
1246         assert(s->state == SERVICE_RUNNING);
1247
1248         service_enter_reload(s);
1249         return 0;
1250 }
1251
1252 static bool service_can_reload(Unit *u) {
1253         Service *s = SERVICE(u);
1254
1255         assert(s);
1256
1257         return !!s->exec_command[SERVICE_EXEC_RELOAD];
1258 }
1259
1260 static UnitActiveState service_active_state(Unit *u) {
1261         assert(u);
1262
1263         return state_translation_table[SERVICE(u)->state];
1264 }
1265
1266 static int main_pid_good(Service *s) {
1267         assert(s);
1268
1269         /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1270          * don't know */
1271
1272         /* If we know the pid file, then lets just check if it is
1273          * still valid */
1274         if (s->main_pid_known)
1275                 return s->main_pid > 0;
1276
1277         /* We don't know the pid */
1278         return -1;
1279 }
1280
1281 static bool control_pid_good(Service *s) {
1282         assert(s);
1283
1284         return s->control_pid > 0;
1285 }
1286
1287 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1288         Service *s = SERVICE(u);
1289         bool success;
1290
1291         assert(s);
1292         assert(pid >= 0);
1293
1294         success = code == CLD_EXITED && status == 0;
1295         s->failure = s->failure || !success;
1296
1297         if (s->main_pid == pid) {
1298
1299                 exec_status_fill(&s->main_exec_status, pid, code, status);
1300                 s->main_pid = 0;
1301
1302                 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1303                         assert(s->exec_command[SERVICE_EXEC_START]);
1304                         s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1305                 }
1306
1307                 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1308
1309                 /* The service exited, so the service is officially
1310                  * gone. */
1311
1312                 switch (s->state) {
1313
1314                 case SERVICE_START_POST:
1315                 case SERVICE_RELOAD:
1316                 case SERVICE_STOP:
1317                         /* Need to wait until the operation is
1318                          * done */
1319                         break;
1320
1321                 case SERVICE_START:
1322                         assert(s->type == SERVICE_FINISH);
1323
1324                         /* This was our main goal, so let's go on */
1325                         if (success)
1326                                 service_enter_start_post(s);
1327                         else
1328                                 service_enter_stop(s, false);
1329                         break;
1330
1331                 case SERVICE_RUNNING:
1332                         service_enter_stop(s, success);
1333                         break;
1334
1335                 case SERVICE_STOP_SIGTERM:
1336                 case SERVICE_STOP_SIGKILL:
1337
1338                         if (!control_pid_good(s))
1339                                 service_enter_stop_post(s, success);
1340
1341                         /* If there is still a control process, wait for that first */
1342                         break;
1343
1344                 default:
1345                         assert_not_reached("Uh, main process died at wrong time.");
1346                 }
1347
1348         } else if (s->control_pid == pid) {
1349                 assert(s->control_command);
1350
1351                 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1352                 s->control_pid = 0;
1353
1354                 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1355
1356                 /* If we are shutting things down anyway we
1357                  * don't care about failing commands. */
1358
1359                 if (s->control_command->command_next &&
1360                     (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
1361
1362                         /* There is another command to *
1363                          * execute, so let's do that. */
1364
1365                         service_run_next(s, success);
1366
1367                 else {
1368                         /* No further commands for this step, so let's
1369                          * figure out what to do next */
1370
1371                         log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
1372
1373                         switch (s->state) {
1374
1375                         case SERVICE_START_PRE:
1376                                 if (success)
1377                                         service_enter_start(s);
1378                                 else
1379                                         service_enter_stop(s, false);
1380                                 break;
1381
1382                         case SERVICE_START:
1383                                 assert(s->type == SERVICE_FORKING);
1384
1385                                 /* Let's try to load the pid
1386                                  * file here if we can. We
1387                                  * ignore the return value,
1388                                  * since the PID file might
1389                                  * actually be created by a
1390                                  * START_POST script */
1391
1392                                 if (success) {
1393                                         if (s->pid_file)
1394                                                 service_load_pid_file(s);
1395
1396                                         service_enter_start_post(s);
1397                                 } else
1398                                         service_enter_stop(s, false);
1399
1400                                 break;
1401
1402                         case SERVICE_START_POST:
1403                                 if (success && s->pid_file && !s->main_pid_known) {
1404                                         int r;
1405
1406                                         /* Hmm, let's see if we can
1407                                          * load the pid now after the
1408                                          * start-post scripts got
1409                                          * executed. */
1410
1411                                         if ((r = service_load_pid_file(s)) < 0)
1412                                                 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
1413                                 }
1414
1415                                 /* Fall through */
1416
1417                         case SERVICE_RELOAD:
1418                                 if (success) {
1419                                         if (main_pid_good(s) != 0)
1420                                                 service_set_state(s, SERVICE_RUNNING);
1421                                         else
1422                                                 service_enter_stop(s, true);
1423                                 } else
1424                                         service_enter_stop(s, false);
1425
1426                                 break;
1427
1428                         case SERVICE_STOP:
1429                                 if (main_pid_good(s) > 0)
1430                                         /* Still not dead and we know the PID? Let's go hunting. */
1431                                         service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1432                                 else
1433                                         service_enter_stop_post(s, success);
1434                                 break;
1435
1436                         case SERVICE_STOP_SIGTERM:
1437                         case SERVICE_STOP_SIGKILL:
1438                                 if (main_pid_good(s) <= 0)
1439                                         service_enter_stop_post(s, success);
1440
1441                                 /* If there is still a service
1442                                  * process around, wait until
1443                                  * that one quit, too */
1444                                 break;
1445
1446                         case SERVICE_STOP_POST:
1447                         case SERVICE_FINAL_SIGTERM:
1448                         case SERVICE_FINAL_SIGKILL:
1449                                 service_enter_dead(s, success, true);
1450                                 break;
1451
1452                         default:
1453                                 assert_not_reached("Uh, control process died at wrong time.");
1454                         }
1455                 }
1456         } else
1457                 assert_not_reached("Got SIGCHLD for unkown PID");
1458 }
1459
1460 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
1461         Service *s = SERVICE(u);
1462
1463         assert(s);
1464         assert(elapsed == 1);
1465
1466         assert(w == &s->timer_watch);
1467
1468         switch (s->state) {
1469
1470         case SERVICE_START_PRE:
1471         case SERVICE_START:
1472         case SERVICE_START_POST:
1473         case SERVICE_RELOAD:
1474                 log_warning("%s operation timed out. Stopping.", unit_id(u));
1475                 service_enter_stop(s, false);
1476                 break;
1477
1478         case SERVICE_STOP:
1479                 log_warning("%s stopping timed out. Terminating.", unit_id(u));
1480                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1481                 break;
1482
1483         case SERVICE_STOP_SIGTERM:
1484                 log_warning("%s stopping timed out. Killing.", unit_id(u));
1485                 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1486                 break;
1487
1488         case SERVICE_STOP_SIGKILL:
1489                 /* Uh, wie sent a SIGKILL and it is still not gone?
1490                  * Must be something we cannot kill, so let's just be
1491                  * weirded out and continue */
1492
1493                 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
1494                 service_enter_stop_post(s, false);
1495                 break;
1496
1497         case SERVICE_STOP_POST:
1498                 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
1499                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1500                 break;
1501
1502         case SERVICE_FINAL_SIGTERM:
1503                 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
1504                 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1505                 break;
1506
1507         case SERVICE_FINAL_SIGKILL:
1508                 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
1509                 service_enter_dead(s, false, true);
1510                 break;
1511
1512         case SERVICE_AUTO_RESTART:
1513                 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
1514                 service_enter_restart(s);
1515                 break;
1516
1517         default:
1518                 assert_not_reached("Timeout at wrong time.");
1519         }
1520 }
1521
1522 static int service_enumerate(Manager *m) {
1523
1524         static const char * const rcnd[] = {
1525                 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1526                 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1527                 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1528                 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1529                 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1530                 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1531                 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1532         };
1533
1534         char **p;
1535         unsigned i;
1536         DIR *d = NULL;
1537         char *path = NULL, *fpath = NULL, *name = NULL;
1538         int r;
1539
1540         assert(m);
1541
1542         STRV_FOREACH(p, m->sysvinit_path)
1543                 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1544                         struct dirent *de;
1545
1546                         free(path);
1547                         path = NULL;
1548                         if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1549                                 r = -ENOMEM;
1550                                 goto finish;
1551                         }
1552
1553                         if (d)
1554                                 closedir(d);
1555
1556                         if (!(d = opendir(path))) {
1557                                 if (errno != ENOENT)
1558                                         log_warning("opendir() failed on %s: %s", path, strerror(errno));
1559
1560                                 continue;
1561                         }
1562
1563                         while ((de = readdir(d))) {
1564                                 Unit *runlevel, *service;
1565
1566                                 if (ignore_file(de->d_name))
1567                                         continue;
1568
1569                                 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1570                                         continue;
1571
1572                                 if (strlen(de->d_name) < 4)
1573                                         continue;
1574
1575                                 free(fpath);
1576                                 fpath = NULL;
1577                                 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1578                                         r = -ENOMEM;
1579                                         goto finish;
1580                                 }
1581
1582                                 if (access(fpath, X_OK) < 0) {
1583
1584                                         if (errno != ENOENT)
1585                                                 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1586
1587                                         continue;
1588                                 }
1589
1590                                 free(name);
1591                                 name = NULL;
1592                                 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1593                                         r = -ENOMEM;
1594                                         goto finish;
1595                                 }
1596
1597                                 if ((r = manager_load_unit(m, name, &service)) < 0)
1598                                         goto finish;
1599
1600                                 /* Don't allow that non-SysV services
1601                                  * are started via rcN.d/ links. */
1602                                 if (!SERVICE(service)->sysv_path)
1603                                         continue;
1604
1605                                 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1606                                         goto finish;
1607
1608                                 if (de->d_name[0] == 'S') {
1609                                         if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1610                                                 goto finish;
1611
1612                                         if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1613                                                 goto finish;
1614                                 } else {
1615                                         if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1616                                                 goto finish;
1617
1618                                         if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1619                                                 goto finish;
1620                                 }
1621                         }
1622                 }
1623
1624         r = 0;
1625
1626 finish:
1627         free(path);
1628         free(fpath);
1629         free(name);
1630         closedir(d);
1631
1632         return r;
1633 }
1634
1635 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1636         [SERVICE_DEAD] = "dead",
1637         [SERVICE_START_PRE] = "start-pre",
1638         [SERVICE_START] = "start",
1639         [SERVICE_START_POST] = "start-post",
1640         [SERVICE_RUNNING] = "running",
1641         [SERVICE_RELOAD] = "reload",
1642         [SERVICE_STOP] = "stop",
1643         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1644         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1645         [SERVICE_STOP_POST] = "stop-post",
1646         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1647         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1648         [SERVICE_MAINTAINANCE] = "maintainance",
1649         [SERVICE_AUTO_RESTART] = "auto-restart",
1650 };
1651
1652 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1653
1654 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1655         [SERVICE_ONCE] = "once",
1656         [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1657         [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1658 };
1659
1660 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1661
1662 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1663         [SERVICE_FORKING] = "forking",
1664         [SERVICE_SIMPLE] = "simple",
1665         [SERVICE_FINISH] = "finish"
1666 };
1667
1668 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1669
1670 static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1671         [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1672         [SERVICE_EXEC_START] = "ExecStart",
1673         [SERVICE_EXEC_START_POST] = "ExecStartPost",
1674         [SERVICE_EXEC_RELOAD] = "ExecReload",
1675         [SERVICE_EXEC_STOP] = "ExecStop",
1676         [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1677 };
1678
1679 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1680
1681 const UnitVTable service_vtable = {
1682         .suffix = ".service",
1683
1684         .init = service_init,
1685         .done = service_done,
1686
1687         .dump = service_dump,
1688
1689         .start = service_start,
1690         .stop = service_stop,
1691         .reload = service_reload,
1692
1693         .can_reload = service_can_reload,
1694
1695         .active_state = service_active_state,
1696
1697         .sigchld_event = service_sigchld_event,
1698         .timer_event = service_timer_event,
1699
1700         .enumerate = service_enumerate
1701 };