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         s->permissions_start_only = false;
 561         s->root_directory_start_only = false;
 562
 563         RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
 564
 565         /* Load a .service file */
 566         if ((r = unit_load_fragment(u)) < 0) {
 567                 service_done(u);
 568                 return r;
 569         }
 570
 571         /* Load a classic init script as a fallback, if we couldn*t find anything */
 572         if (r == 0)
 573                 if ((r = service_load_sysv(s)) <= 0) {
 574                         service_done(u);
 575                         return r < 0 ? r : -ENOENT;
 576                 }
 577
 578         /* Load dropin directory data */
 579         if ((r = unit_load_dropin(u)) < 0) {
 580                 service_done(u);
 581                 return r;
 582         }
 583
 584         return 0;
 585 }
 586
 587 static void service_dump(Unit *u, FILE *f, const char *prefix) {
 588
 589         ServiceExecCommand c;
 590         Service *s = SERVICE(u);
 591         const char *prefix2;
 592         char *p2;
 593
 594         assert(s);
 595
 596         p2 = strappend(prefix, "\t");
 597         prefix2 = p2 ? p2 : prefix;
 598
 599         fprintf(f,
 600                 "%sService State: %s\n"
 601                 "%sPermissionsStartOnly: %s\n"
 602                 "%sRootDirectoryStartOnly: %s\n",
 603                 prefix, service_state_to_string(s->state),
 604                 prefix, yes_no(s->permissions_start_only),
 605                 prefix, yes_no(s->root_directory_start_only));
 606
 607         if (s->pid_file)
 608                 fprintf(f,
 609                         "%sPIDFile: %s\n",
 610                         prefix, s->pid_file);
 611
 612
 613         exec_context_dump(&s->exec_context, f, prefix);
 614
 615         for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
 616
 617                 if (!s->exec_command[c])
 618                         continue;
 619
 620                 fprintf(f, "%s→ %s:\n",
 621                         prefix, service_exec_command_to_string(c));
 622
 623                 exec_command_dump_list(s->exec_command[c], f, prefix2);
 624         }
 625
 626         if (s->sysv_path)
 627                 fprintf(f,
 628                         "%sSysV Init Script Path: %s\n",
 629                         prefix, s->sysv_path);
 630
 631         if (s->sysv_start_priority >= 0)
 632                 fprintf(f,
 633                         "%sSysV Start Priority: %i\n",
 634                         prefix, s->sysv_start_priority);
 635
 636         free(p2);
 637 }
 638
 639 static int service_load_pid_file(Service *s) {
 640         char *k;
 641         unsigned long p;
 642         int r;
 643
 644         assert(s);
 645
 646         if (s->main_pid_known)
 647                 return 0;
 648
 649         if (!s->pid_file)
 650                 return -ENOENT;
 651
 652         if ((r = read_one_line_file(s->pid_file, &k)) < 0)
 653                 return r;
 654
 655         if ((r = safe_atolu(k, &p)) < 0) {
 656                 free(k);
 657                 return r;
 658         }
 659
 660         if ((unsigned long) (pid_t) p != p)
 661                 return -ERANGE;
 662
 663         s->main_pid = p;
 664         s->main_pid_known = true;
 665
 666         return 0;
 667 }
 668
 669 static int service_get_sockets(Service *s, Set **_set) {
 670         Set *set;
 671         Iterator i;
 672         char *t;
 673         int r;
 674
 675         assert(s);
 676         assert(_set);
 677
 678         /* Collects all Socket objects that belong to this
 679          * service. Note that a service might have multiple sockets
 680          * via multiple names. */
 681
 682         if (!(set = set_new(NULL, NULL)))
 683                 return -ENOMEM;
 684
 685         SET_FOREACH(t, UNIT(s)->meta.names, i) {
 686                 char *k;
 687                 Unit *p;
 688
 689                 /* Look for all socket objects that go by any of our
 690                  * units and collect their fds */
 691
 692                 if (!(k = unit_name_change_suffix(t, ".socket"))) {
 693                         r = -ENOMEM;
 694                         goto fail;
 695                 }
 696
 697                 p = manager_get_unit(UNIT(s)->meta.manager, k);
 698                 free(k);
 699
 700                 if (!p) continue;
 701
 702                 if ((r = set_put(set, p)) < 0)
 703                         goto fail;
 704         }
 705
 706         *_set = set;
 707         return 0;
 708
 709 fail:
 710         set_free(set);
 711         return r;
 712 }
 713
 714
 715 static int service_notify_sockets(Service *s) {
 716         Iterator i;
 717         Set *set;
 718         Socket *sock;
 719         int r;
 720
 721         assert(s);
 722
 723         /* Notifies all our sockets when we die */
 724
 725         if ((r = service_get_sockets(s, &set)) < 0)
 726                 return r;
 727
 728         SET_FOREACH(sock, set, i)
 729                 socket_notify_service_dead(sock);
 730
 731         set_free(set);
 732
 733         return 0;
 734 }
 735
 736 static void service_set_state(Service *s, ServiceState state) {
 737         ServiceState old_state;
 738         assert(s);
 739
 740         old_state = s->state;
 741         s->state = state;
 742
 743         if (state != SERVICE_START_PRE &&
 744             state != SERVICE_START &&
 745             state != SERVICE_START_POST &&
 746             state != SERVICE_RELOAD &&
 747             state != SERVICE_STOP &&
 748             state != SERVICE_STOP_SIGTERM &&
 749             state != SERVICE_STOP_SIGKILL &&
 750             state != SERVICE_STOP_POST &&
 751             state != SERVICE_FINAL_SIGTERM &&
 752             state != SERVICE_FINAL_SIGKILL &&
 753             state != SERVICE_AUTO_RESTART)
 754                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
 755
 756         if (state != SERVICE_START &&
 757             state != SERVICE_START_POST &&
 758             state != SERVICE_RUNNING &&
 759             state != SERVICE_RELOAD &&
 760             state != SERVICE_STOP &&
 761             state != SERVICE_STOP_SIGTERM &&
 762             state != SERVICE_STOP_SIGKILL)
 763                 if (s->main_pid > 0) {
 764                         unit_unwatch_pid(UNIT(s), s->main_pid);
 765                         s->main_pid = 0;
 766                 }
 767
 768         if (state != SERVICE_START_PRE &&
 769             state != SERVICE_START &&
 770             state != SERVICE_START_POST &&
 771             state != SERVICE_RELOAD &&
 772             state != SERVICE_STOP &&
 773             state != SERVICE_STOP_SIGTERM &&
 774             state != SERVICE_STOP_SIGKILL &&
 775             state != SERVICE_STOP_POST &&
 776             state != SERVICE_FINAL_SIGTERM &&
 777             state != SERVICE_FINAL_SIGKILL)
 778                 if (s->control_pid > 0) {
 779                         unit_unwatch_pid(UNIT(s), s->control_pid);
 780                         s->control_pid = 0;
 781                 }
 782
 783         if (state != SERVICE_START_PRE &&
 784             state != SERVICE_START &&
 785             state != SERVICE_START_POST &&
 786             state != SERVICE_RELOAD &&
 787             state != SERVICE_STOP &&
 788             state != SERVICE_STOP_POST)
 789                 s->control_command = NULL;
 790
 791         if (state == SERVICE_DEAD ||
 792             state == SERVICE_STOP ||
 793             state == SERVICE_STOP_SIGTERM ||
 794             state == SERVICE_STOP_SIGKILL ||
 795             state == SERVICE_STOP_POST ||
 796             state == SERVICE_FINAL_SIGTERM ||
 797             state == SERVICE_FINAL_SIGKILL ||
 798             state == SERVICE_MAINTAINANCE ||
 799             state == SERVICE_AUTO_RESTART)
 800                 service_notify_sockets(s);
 801
 802         log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
 803
 804         unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
 805 }
 806
 807 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
 808         Iterator i;
 809         int r;
 810         int *rfds = NULL;
 811         unsigned rn_fds = 0;
 812         Set *set;
 813         Socket *sock;
 814
 815         assert(s);
 816         assert(fds);
 817         assert(n_fds);
 818
 819         if ((r = service_get_sockets(s, &set)) < 0)
 820                 return r;
 821
 822         SET_FOREACH(sock, set, i) {
 823                 int *cfds;
 824                 unsigned cn_fds;
 825
 826                 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
 827                         goto fail;
 828
 829                 if (!cfds)
 830                         continue;
 831
 832                 if (!rfds) {
 833                         rfds = cfds;
 834                         rn_fds = cn_fds;
 835                 } else {
 836                         int *t;
 837
 838                         if (!(t = new(int, rn_fds+cn_fds))) {
 839                                 free(cfds);
 840                                 r = -ENOMEM;
 841                                 goto fail;
 842                         }
 843
 844                         memcpy(t, rfds, rn_fds);
 845                         memcpy(t+rn_fds, cfds, cn_fds);
 846                         free(rfds);
 847                         free(cfds);
 848
 849                         rfds = t;
 850                         rn_fds = rn_fds+cn_fds;
 851                 }
 852         }
 853
 854         *fds = rfds;
 855         *n_fds = rn_fds;
 856
 857         set_free(set);
 858
 859         return 0;
 860
 861 fail:
 862         set_free(set);
 863         free(rfds);
 864
 865         return r;
 866 }
 867
 868 static int service_spawn(
 869                 Service *s,
 870                 ExecCommand *c,
 871                 bool timeout,
 872                 bool pass_fds,
 873                 bool apply_permissions,
 874                 bool apply_chroot,
 875                 pid_t *_pid) {
 876
 877         pid_t pid;
 878         int r;
 879         int *fds = NULL;
 880         unsigned n_fds = 0;
 881
 882         assert(s);
 883         assert(c);
 884         assert(_pid);
 885
 886         if (pass_fds)
 887                 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
 888                         goto fail;
 889
 890         if (timeout) {
 891                 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
 892                         goto fail;
 893         } else
 894                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
 895
 896         if ((r = exec_spawn(c,
 897                             &s->exec_context,
 898                             fds, n_fds,
 899                             apply_permissions,
 900                             apply_chroot,
 901                             &pid)) < 0)
 902                 goto fail;
 903
 904         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
 905                 /* FIXME: we need to do something here */
 906                 goto fail;
 907
 908         free(fds);
 909         *_pid = pid;
 910
 911         return 0;
 912
 913 fail:
 914         free(fds);
 915
 916         if (timeout)
 917                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
 918
 919         return r;
 920 }
 921
 922 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
 923         int r;
 924         assert(s);
 925
 926         if (!success)
 927                 s->failure = true;
 928
 929         if (allow_restart &&
 930             (s->restart == SERVICE_RESTART_ALWAYS ||
 931              (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
 932
 933                 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
 934                         goto fail;
 935
 936                 service_set_state(s, SERVICE_AUTO_RESTART);
 937         } else
 938                 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
 939
 940         return;
 941
 942 fail:
 943         log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
 944         service_enter_dead(s, false, false);
 945 }
 946
 947 static void service_enter_signal(Service *s, ServiceState state, bool success);
 948
 949 static void service_enter_stop_post(Service *s, bool success) {
 950         int r;
 951         assert(s);
 952
 953         if (!success)
 954                 s->failure = true;
 955
 956         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
 957                 if ((r = service_spawn(s,
 958                                        s->control_command,
 959                                        true,
 960                                        false,
 961                                        !s->permissions_start_only,
 962                                        !s->root_directory_start_only,
 963                                        &s->control_pid)) < 0)
 964                         goto fail;
 965
 966
 967         service_set_state(s, SERVICE_STOP_POST);
 968
 969         if (!s->control_command)
 970                 service_enter_dead(s, true, true);
 971
 972         return;
 973
 974 fail:
 975         log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
 976         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
 977 }
 978
 979 static void service_enter_signal(Service *s, ServiceState state, bool success) {
 980         int r;
 981         bool sent = false;
 982
 983         assert(s);
 984
 985         if (!success)
 986                 s->failure = true;
 987
 988         if (s->main_pid > 0 || s->control_pid > 0) {
 989                 int sig;
 990
 991                 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
 992
 993                 r = 0;
 994                 if (s->main_pid > 0) {
 995                         if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
 996                                 r = -errno;
 997                         else
 998                                 sent = true;
 999                 }
1000
1001                 if (s->control_pid > 0) {
1002                         if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1003                                 r = -errno;
1004                         else
1005                                 sent = true;
1006                 }
1007
1008                 if (r < 0)
1009                         goto fail;
1010         }
1011
1012         service_set_state(s, state);
1013
1014         if (s->main_pid <= 0 && s->control_pid <= 0)
1015                 service_enter_dead(s, true, true);
1016
1017         return;
1018
1019 fail:
1020         log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
1021
1022         if (sent)  {
1023                 s->failure = true;
1024                 service_set_state(s, state);
1025         } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1026                 service_enter_stop_post(s, false);
1027         else
1028                 service_enter_dead(s, false, true);
1029 }
1030
1031 static void service_enter_stop(Service *s, bool success) {
1032         int r;
1033         assert(s);
1034
1035         if (!success)
1036                 s->failure = true;
1037
1038         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
1039                 if ((r = service_spawn(s,
1040                                        s->control_command,
1041                                        true,
1042                                        false,
1043                                        !s->permissions_start_only,
1044                                        !s->root_directory_start_only,
1045                                        &s->control_pid)) < 0)
1046                         goto fail;
1047
1048         service_set_state(s, SERVICE_STOP);
1049
1050         if (!s->control_command)
1051                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1052
1053         return;
1054
1055 fail:
1056         log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
1057         service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1058 }
1059
1060 static void service_enter_start_post(Service *s) {
1061         int r;
1062         assert(s);
1063
1064         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
1065                 if ((r = service_spawn(s,
1066                                        s->control_command,
1067                                        true,
1068                                        false,
1069                                        !s->permissions_start_only,
1070                                        !s->root_directory_start_only,
1071                                        &s->control_pid)) < 0)
1072                         goto fail;
1073
1074
1075         service_set_state(s, SERVICE_START_POST);
1076
1077         if (!s->control_command)
1078                 service_set_state(s, SERVICE_RUNNING);
1079
1080         return;
1081
1082 fail:
1083         log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
1084         service_enter_stop(s, false);
1085 }
1086
1087 static void service_enter_start(Service *s) {
1088         pid_t pid;
1089         int r;
1090
1091         assert(s);
1092
1093         assert(s->exec_command[SERVICE_EXEC_START]);
1094         assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1095
1096         if ((r = service_spawn(s,
1097                                s->exec_command[SERVICE_EXEC_START],
1098                                s->type == SERVICE_FORKING,
1099                                true,
1100                                true,
1101                                true,
1102                                &pid)) < 0)
1103                 goto fail;
1104
1105         service_set_state(s, SERVICE_START);
1106
1107         if (s->type == SERVICE_SIMPLE) {
1108                 /* For simple services we immediately start
1109                  * the START_POST binaries. */
1110
1111                 s->main_pid = pid;
1112                 s->main_pid_known = true;
1113                 service_enter_start_post(s);
1114
1115         } else  if (s->type == SERVICE_FORKING) {
1116
1117                 /* For forking services we wait until the start
1118                  * process exited. */
1119
1120                 s->control_pid = pid;
1121                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1122         } else if (s->type == SERVICE_FINISH) {
1123
1124                 /* For finishing services we wait until the start
1125                  * process exited, too, but it is our main process. */
1126
1127                 s->main_pid = pid;
1128                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1129         } else
1130                 assert_not_reached("Unknown service type");
1131
1132         return;
1133
1134 fail:
1135         log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
1136         service_enter_stop(s, false);
1137 }
1138
1139 static void service_enter_start_pre(Service *s) {
1140         int r;
1141
1142         assert(s);
1143
1144         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
1145                 if ((r = service_spawn(s,
1146                                        s->control_command,
1147                                        true,
1148                                        false,
1149                                        !s->permissions_start_only,
1150                                        !s->root_directory_start_only,
1151                                        &s->control_pid)) < 0)
1152                         goto fail;
1153
1154         service_set_state(s, SERVICE_START_PRE);
1155
1156         if (!s->control_command)
1157                 service_enter_start(s);
1158
1159         return;
1160
1161 fail:
1162         log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
1163         service_enter_dead(s, false, true);
1164 }
1165
1166 static void service_enter_restart(Service *s) {
1167         int r;
1168         assert(s);
1169
1170         if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1171                 goto fail;
1172
1173         log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
1174         service_enter_dead(s, true, false);
1175         return;
1176
1177 fail:
1178
1179         log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
1180         service_enter_dead(s, false, false);
1181 }
1182
1183 static void service_enter_reload(Service *s) {
1184         int r;
1185
1186         assert(s);
1187
1188         if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
1189                 if ((r = service_spawn(s,
1190                                        s->control_command,
1191                                        true,
1192                                        false,
1193                                        !s->permissions_start_only,
1194                                        !s->root_directory_start_only,
1195                                        &s->control_pid)) < 0)
1196                         goto fail;
1197
1198         service_set_state(s, SERVICE_RELOAD);
1199
1200         if (!s->control_command)
1201                 service_set_state(s, SERVICE_RUNNING);
1202
1203         return;
1204
1205 fail:
1206         log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
1207         service_enter_stop(s, false);
1208 }
1209
1210 static void service_run_next(Service *s, bool success) {
1211         int r;
1212
1213         assert(s);
1214         assert(s->control_command);
1215         assert(s->control_command->command_next);
1216
1217         if (!success)
1218                 s->failure = true;
1219
1220         s->control_command = s->control_command->command_next;
1221
1222         if ((r = service_spawn(s,
1223                                s->control_command,
1224                                true,
1225                                false,
1226                                !s->permissions_start_only,
1227                                !s->root_directory_start_only,
1228                                &s->control_pid)) < 0)
1229                 goto fail;
1230
1231         return;
1232
1233 fail:
1234         log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
1235
1236         if (s->state == SERVICE_STOP)
1237                 service_enter_stop_post(s, false);
1238         else if (s->state == SERVICE_STOP_POST)
1239                 service_enter_dead(s, false, true);
1240         else
1241                 service_enter_stop(s, false);
1242 }
1243
1244 static int service_start(Unit *u) {
1245         Service *s = SERVICE(u);
1246
1247         assert(s);
1248
1249         /* We cannot fulfill this request right now, try again later
1250          * please! */
1251         if (s->state == SERVICE_STOP ||
1252             s->state == SERVICE_STOP_SIGTERM ||
1253             s->state == SERVICE_STOP_SIGKILL ||
1254             s->state == SERVICE_STOP_POST ||
1255             s->state == SERVICE_FINAL_SIGTERM ||
1256             s->state == SERVICE_FINAL_SIGKILL)
1257                 return -EAGAIN;
1258
1259         /* Already on it! */
1260         if (s->state == SERVICE_START_PRE ||
1261             s->state == SERVICE_START ||
1262             s->state == SERVICE_START_POST)
1263                 return 0;
1264
1265         assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1266
1267         /* Make sure we don't enter a busy loop of some kind. */
1268         if (!ratelimit_test(&s->ratelimit)) {
1269                 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1270                 return -EAGAIN;
1271         }
1272
1273         s->failure = false;
1274         s->main_pid_known = false;
1275
1276         service_enter_start_pre(s);
1277         return 0;
1278 }
1279
1280 static int service_stop(Unit *u) {
1281         Service *s = SERVICE(u);
1282
1283         assert(s);
1284
1285         if (s->state == SERVICE_START_PRE ||
1286             s->state == SERVICE_START ||
1287             s->state == SERVICE_START_POST ||
1288             s->state == SERVICE_RELOAD)
1289                 return -EAGAIN;
1290
1291         if (s->state == SERVICE_AUTO_RESTART) {
1292                 service_set_state(s, SERVICE_DEAD);
1293                 return 0;
1294         }
1295
1296         assert(s->state == SERVICE_RUNNING);
1297
1298         service_enter_stop(s, true);
1299         return 0;
1300 }
1301
1302 static int service_reload(Unit *u) {
1303         Service *s = SERVICE(u);
1304
1305         assert(s);
1306
1307         assert(s->state == SERVICE_RUNNING);
1308
1309         service_enter_reload(s);
1310         return 0;
1311 }
1312
1313 static bool service_can_reload(Unit *u) {
1314         Service *s = SERVICE(u);
1315
1316         assert(s);
1317
1318         return !!s->exec_command[SERVICE_EXEC_RELOAD];
1319 }
1320
1321 static UnitActiveState service_active_state(Unit *u) {
1322         assert(u);
1323
1324         return state_translation_table[SERVICE(u)->state];
1325 }
1326
1327 static int main_pid_good(Service *s) {
1328         assert(s);
1329
1330         /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1331          * don't know */
1332
1333         /* If we know the pid file, then lets just check if it is
1334          * still valid */
1335         if (s->main_pid_known)
1336                 return s->main_pid > 0;
1337
1338         /* We don't know the pid */
1339         return -1;
1340 }
1341
1342 static bool control_pid_good(Service *s) {
1343         assert(s);
1344
1345         return s->control_pid > 0;
1346 }
1347
1348 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1349         Service *s = SERVICE(u);
1350         bool success;
1351
1352         assert(s);
1353         assert(pid >= 0);
1354
1355         success = code == CLD_EXITED && status == 0;
1356         s->failure = s->failure || !success;
1357
1358         if (s->main_pid == pid) {
1359
1360                 exec_status_fill(&s->main_exec_status, pid, code, status);
1361                 s->main_pid = 0;
1362
1363                 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1364                         assert(s->exec_command[SERVICE_EXEC_START]);
1365                         s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1366                 }
1367
1368                 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1369
1370                 /* The service exited, so the service is officially
1371                  * gone. */
1372
1373                 switch (s->state) {
1374
1375                 case SERVICE_START_POST:
1376                 case SERVICE_RELOAD:
1377                 case SERVICE_STOP:
1378                         /* Need to wait until the operation is
1379                          * done */
1380                         break;
1381
1382                 case SERVICE_START:
1383                         assert(s->type == SERVICE_FINISH);
1384
1385                         /* This was our main goal, so let's go on */
1386                         if (success)
1387                                 service_enter_start_post(s);
1388                         else
1389                                 service_enter_stop(s, false);
1390                         break;
1391
1392                 case SERVICE_RUNNING:
1393                         service_enter_stop(s, success);
1394                         break;
1395
1396                 case SERVICE_STOP_SIGTERM:
1397                 case SERVICE_STOP_SIGKILL:
1398
1399                         if (!control_pid_good(s))
1400                                 service_enter_stop_post(s, success);
1401
1402                         /* If there is still a control process, wait for that first */
1403                         break;
1404
1405                 default:
1406                         assert_not_reached("Uh, main process died at wrong time.");
1407                 }
1408
1409         } else if (s->control_pid == pid) {
1410                 assert(s->control_command);
1411
1412                 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1413                 s->control_pid = 0;
1414
1415                 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1416
1417                 /* If we are shutting things down anyway we
1418                  * don't care about failing commands. */
1419
1420                 if (s->control_command->command_next &&
1421                     (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
1422
1423                         /* There is another command to *
1424                          * execute, so let's do that. */
1425
1426                         service_run_next(s, success);
1427
1428                 else {
1429                         /* No further commands for this step, so let's
1430                          * figure out what to do next */
1431
1432                         log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
1433
1434                         switch (s->state) {
1435
1436                         case SERVICE_START_PRE:
1437                                 if (success)
1438                                         service_enter_start(s);
1439                                 else
1440                                         service_enter_stop(s, false);
1441                                 break;
1442
1443                         case SERVICE_START:
1444                                 assert(s->type == SERVICE_FORKING);
1445
1446                                 /* Let's try to load the pid
1447                                  * file here if we can. We
1448                                  * ignore the return value,
1449                                  * since the PID file might
1450                                  * actually be created by a
1451                                  * START_POST script */
1452
1453                                 if (success) {
1454                                         if (s->pid_file)
1455                                                 service_load_pid_file(s);
1456
1457                                         service_enter_start_post(s);
1458                                 } else
1459                                         service_enter_stop(s, false);
1460
1461                                 break;
1462
1463                         case SERVICE_START_POST:
1464                                 if (success && s->pid_file && !s->main_pid_known) {
1465                                         int r;
1466
1467                                         /* Hmm, let's see if we can
1468                                          * load the pid now after the
1469                                          * start-post scripts got
1470                                          * executed. */
1471
1472                                         if ((r = service_load_pid_file(s)) < 0)
1473                                                 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
1474                                 }
1475
1476                                 /* Fall through */
1477
1478                         case SERVICE_RELOAD:
1479                                 if (success) {
1480                                         if (main_pid_good(s) != 0)
1481                                                 service_set_state(s, SERVICE_RUNNING);
1482                                         else
1483                                                 service_enter_stop(s, true);
1484                                 } else
1485                                         service_enter_stop(s, false);
1486
1487                                 break;
1488
1489                         case SERVICE_STOP:
1490                                 if (main_pid_good(s) > 0)
1491                                         /* Still not dead and we know the PID? Let's go hunting. */
1492                                         service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1493                                 else
1494                                         service_enter_stop_post(s, success);
1495                                 break;
1496
1497                         case SERVICE_STOP_SIGTERM:
1498                         case SERVICE_STOP_SIGKILL:
1499                                 if (main_pid_good(s) <= 0)
1500                                         service_enter_stop_post(s, success);
1501
1502                                 /* If there is still a service
1503                                  * process around, wait until
1504                                  * that one quit, too */
1505                                 break;
1506
1507                         case SERVICE_STOP_POST:
1508                         case SERVICE_FINAL_SIGTERM:
1509                         case SERVICE_FINAL_SIGKILL:
1510                                 service_enter_dead(s, success, true);
1511                                 break;
1512
1513                         default:
1514                                 assert_not_reached("Uh, control process died at wrong time.");
1515                         }
1516                 }
1517         } else
1518                 assert_not_reached("Got SIGCHLD for unkown PID");
1519 }
1520
1521 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
1522         Service *s = SERVICE(u);
1523
1524         assert(s);
1525         assert(elapsed == 1);
1526
1527         assert(w == &s->timer_watch);
1528
1529         switch (s->state) {
1530
1531         case SERVICE_START_PRE:
1532         case SERVICE_START:
1533         case SERVICE_START_POST:
1534         case SERVICE_RELOAD:
1535                 log_warning("%s operation timed out. Stopping.", unit_id(u));
1536                 service_enter_stop(s, false);
1537                 break;
1538
1539         case SERVICE_STOP:
1540                 log_warning("%s stopping timed out. Terminating.", unit_id(u));
1541                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1542                 break;
1543
1544         case SERVICE_STOP_SIGTERM:
1545                 log_warning("%s stopping timed out. Killing.", unit_id(u));
1546                 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1547                 break;
1548
1549         case SERVICE_STOP_SIGKILL:
1550                 /* Uh, wie sent a SIGKILL and it is still not gone?
1551                  * Must be something we cannot kill, so let's just be
1552                  * weirded out and continue */
1553
1554                 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
1555                 service_enter_stop_post(s, false);
1556                 break;
1557
1558         case SERVICE_STOP_POST:
1559                 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
1560                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1561                 break;
1562
1563         case SERVICE_FINAL_SIGTERM:
1564                 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
1565                 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1566                 break;
1567
1568         case SERVICE_FINAL_SIGKILL:
1569                 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
1570                 service_enter_dead(s, false, true);
1571                 break;
1572
1573         case SERVICE_AUTO_RESTART:
1574                 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
1575                 service_enter_restart(s);
1576                 break;
1577
1578         default:
1579                 assert_not_reached("Timeout at wrong time.");
1580         }
1581 }
1582
1583 static int service_enumerate(Manager *m) {
1584
1585         static const char * const rcnd[] = {
1586                 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1587                 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1588                 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1589                 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1590                 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1591                 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1592                 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1593         };
1594
1595         char **p;
1596         unsigned i;
1597         DIR *d = NULL;
1598         char *path = NULL, *fpath = NULL, *name = NULL;
1599         int r;
1600
1601         assert(m);
1602
1603         STRV_FOREACH(p, m->sysvinit_path)
1604                 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1605                         struct dirent *de;
1606
1607                         free(path);
1608                         path = NULL;
1609                         if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1610                                 r = -ENOMEM;
1611                                 goto finish;
1612                         }
1613
1614                         if (d)
1615                                 closedir(d);
1616
1617                         if (!(d = opendir(path))) {
1618                                 if (errno != ENOENT)
1619                                         log_warning("opendir() failed on %s: %s", path, strerror(errno));
1620
1621                                 continue;
1622                         }
1623
1624                         while ((de = readdir(d))) {
1625                                 Unit *runlevel, *service;
1626
1627                                 if (ignore_file(de->d_name))
1628                                         continue;
1629
1630                                 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1631                                         continue;
1632
1633                                 if (strlen(de->d_name) < 4)
1634                                         continue;
1635
1636                                 free(fpath);
1637                                 fpath = NULL;
1638                                 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1639                                         r = -ENOMEM;
1640                                         goto finish;
1641                                 }
1642
1643                                 if (access(fpath, X_OK) < 0) {
1644
1645                                         if (errno != ENOENT)
1646                                                 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1647
1648                                         continue;
1649                                 }
1650
1651                                 free(name);
1652                                 name = NULL;
1653                                 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1654                                         r = -ENOMEM;
1655                                         goto finish;
1656                                 }
1657
1658                                 if ((r = manager_load_unit(m, name, &service)) < 0)
1659                                         goto finish;
1660
1661                                 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1662                                         goto finish;
1663
1664                                 if (de->d_name[0] == 'S') {
1665                                         if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1666                                                 goto finish;
1667
1668                                         if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1669                                                 goto finish;
1670                                 } else {
1671                                         if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1672                                                 goto finish;
1673
1674                                         if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1675                                                 goto finish;
1676                                 }
1677                         }
1678                 }
1679
1680         r = 0;
1681
1682 finish:
1683         free(path);
1684         free(fpath);
1685         free(name);
1686         closedir(d);
1687
1688         return r;
1689 }
1690
1691 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1692         [SERVICE_DEAD] = "dead",
1693         [SERVICE_START_PRE] = "start-pre",
1694         [SERVICE_START] = "start",
1695         [SERVICE_START_POST] = "start-post",
1696         [SERVICE_RUNNING] = "running",
1697         [SERVICE_RELOAD] = "reload",
1698         [SERVICE_STOP] = "stop",
1699         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1700         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1701         [SERVICE_STOP_POST] = "stop-post",
1702         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1703         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1704         [SERVICE_MAINTAINANCE] = "maintainance",
1705         [SERVICE_AUTO_RESTART] = "auto-restart",
1706 };
1707
1708 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1709
1710 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1711         [SERVICE_ONCE] = "once",
1712         [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1713         [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1714 };
1715
1716 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1717
1718 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1719         [SERVICE_FORKING] = "forking",
1720         [SERVICE_SIMPLE] = "simple",
1721         [SERVICE_FINISH] = "finish"
1722 };
1723
1724 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1725
1726 static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1727         [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1728         [SERVICE_EXEC_START] = "ExecStart",
1729         [SERVICE_EXEC_START_POST] = "ExecStartPost",
1730         [SERVICE_EXEC_RELOAD] = "ExecReload",
1731         [SERVICE_EXEC_STOP] = "ExecStop",
1732         [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1733 };
1734
1735 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1736
1737 const UnitVTable service_vtable = {
1738         .suffix = ".service",
1739
1740         .init = service_init,
1741         .done = service_done,
1742
1743         .dump = service_dump,
1744
1745         .start = service_start,
1746         .stop = service_stop,
1747         .reload = service_reload,
1748
1749         .can_reload = service_can_reload,
1750
1751         .active_state = service_active_state,
1752
1753         .sigchld_event = service_sigchld_event,
1754         .timer_event = service_timer_event,
1755
1756         .enumerate = service_enumerate
1757 };