src/service.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23 #include <signal.h>
  24 #include <dirent.h>
  25 #include <unistd.h>
  26
  27 #include "unit.h"
  28 #include "service.h"
  29 #include "load-fragment.h"
  30 #include "load-dropin.h"
  31 #include "log.h"
  32 #include "strv.h"
  33 #include "unit-name.h"
  34 #include "dbus-service.h"
  35 #include "special.h"
  36 #include "bus-errors.h"
  37
  38 #define COMMENTS "#;\n"
  39 #define NEWLINES "\n\r"
  40
  41 typedef enum RunlevelType {
  42         RUNLEVEL_UP,
  43         RUNLEVEL_DOWN,
  44         RUNLEVEL_SYSINIT
  45 } RunlevelType;
  46
  47 static const struct {
  48         const char *path;
  49         const char *target;
  50         const RunlevelType type;
  51 } rcnd_table[] = {
  52         /* Standard SysV runlevels for start-up */
  53         { "rc1.d",  SPECIAL_RESCUE_TARGET,    RUNLEVEL_UP },
  54         { "rc2.d",  SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
  55         { "rc3.d",  SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
  56         { "rc4.d",  SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
  57         { "rc5.d",  SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
  58
  59 #ifdef TARGET_SUSE
  60         /* SUSE style boot.d */
  61         { "boot.d", SPECIAL_SYSINIT_TARGET,   RUNLEVEL_SYSINIT },
  62 #endif
  63
  64 #ifdef TARGET_DEBIAN
  65         /* Debian style rcS.d */
  66         { "rcS.d",  SPECIAL_SYSINIT_TARGET,   RUNLEVEL_SYSINIT },
  67 #endif
  68
  69         /* Standard SysV runlevels for shutdown */
  70         { "rc0.d",  SPECIAL_POWEROFF_TARGET,  RUNLEVEL_DOWN },
  71         { "rc6.d",  SPECIAL_REBOOT_TARGET,    RUNLEVEL_DOWN }
  72
  73         /* Note that the order here matters, as we read the
  74            directories in this order, and we want to make sure that
  75            sysv_start_priority is known when we first load the
  76            unit. And that value we only know from S links. Hence
  77            UP/SYSINIT must be read before DOWN */
  78 };
  79
  80 #define RUNLEVELS_UP "12345"
  81 /* #define RUNLEVELS_DOWN "06" */
  82 /* #define RUNLEVELS_BOOT "bBsS" */
  83
  84 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
  85         [SERVICE_DEAD] = UNIT_INACTIVE,
  86         [SERVICE_START_PRE] = UNIT_ACTIVATING,
  87         [SERVICE_START] = UNIT_ACTIVATING,
  88         [SERVICE_START_POST] = UNIT_ACTIVATING,
  89         [SERVICE_RUNNING] = UNIT_ACTIVE,
  90         [SERVICE_EXITED] = UNIT_ACTIVE,
  91         [SERVICE_RELOAD] = UNIT_RELOADING,
  92         [SERVICE_STOP] = UNIT_DEACTIVATING,
  93         [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
  94         [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
  95         [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
  96         [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
  97         [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
  98         [SERVICE_MAINTENANCE] = UNIT_MAINTENANCE,
  99         [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
 100 };
 101
 102 static void service_init(Unit *u) {
 103         Service *s = SERVICE(u);
 104
 105         assert(u);
 106         assert(u->meta.load_state == UNIT_STUB);
 107
 108         s->timeout_usec = DEFAULT_TIMEOUT_USEC;
 109         s->restart_usec = DEFAULT_RESTART_USEC;
 110         s->timer_watch.type = WATCH_INVALID;
 111         s->sysv_start_priority = -1;
 112         s->socket_fd = -1;
 113
 114         exec_context_init(&s->exec_context);
 115
 116         RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
 117
 118         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
 119 }
 120
 121 static void service_unwatch_control_pid(Service *s) {
 122         assert(s);
 123
 124         if (s->control_pid <= 0)
 125                 return;
 126
 127         unit_unwatch_pid(UNIT(s), s->control_pid);
 128         s->control_pid = 0;
 129 }
 130
 131 static void service_unwatch_main_pid(Service *s) {
 132         assert(s);
 133
 134         if (s->main_pid <= 0)
 135                 return;
 136
 137         unit_unwatch_pid(UNIT(s), s->main_pid);
 138         s->main_pid = 0;
 139 }
 140
 141 static int service_set_main_pid(Service *s, pid_t pid) {
 142         pid_t ppid;
 143
 144         assert(s);
 145
 146         if (pid <= 1)
 147                 return -EINVAL;
 148
 149         if (pid == getpid())
 150                 return -EINVAL;
 151
 152         if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
 153                 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
 154                             s->meta.id, (unsigned long) pid);
 155
 156         s->main_pid = pid;
 157         s->main_pid_known = true;
 158
 159         exec_status_start(&s->main_exec_status, pid);
 160
 161         return 0;
 162 }
 163
 164 static void service_close_socket_fd(Service *s) {
 165         assert(s);
 166
 167         if (s->socket_fd < 0)
 168                 return;
 169
 170         close_nointr_nofail(s->socket_fd);
 171         s->socket_fd = -1;
 172 }
 173
 174 static void service_connection_unref(Service *s) {
 175         assert(s);
 176
 177         if (!s->socket)
 178                 return;
 179
 180         socket_connection_unref(s->socket);
 181         s->socket = NULL;
 182 }
 183
 184 static void service_done(Unit *u) {
 185         Service *s = SERVICE(u);
 186
 187         assert(s);
 188
 189         free(s->pid_file);
 190         s->pid_file = NULL;
 191
 192         free(s->sysv_path);
 193         s->sysv_path = NULL;
 194
 195         free(s->sysv_runlevels);
 196         s->sysv_runlevels = NULL;
 197
 198         free(s->status_text);
 199         s->status_text = NULL;
 200
 201         exec_context_done(&s->exec_context);
 202         exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
 203         s->control_command = NULL;
 204
 205         /* This will leak a process, but at least no memory or any of
 206          * our resources */
 207         service_unwatch_main_pid(s);
 208         service_unwatch_control_pid(s);
 209
 210         if (s->bus_name)  {
 211                 unit_unwatch_bus_name(UNIT(u), s->bus_name);
 212                 free(s->bus_name);
 213                 s->bus_name = NULL;
 214         }
 215
 216         service_close_socket_fd(s);
 217         service_connection_unref(s);
 218
 219         unit_unwatch_timer(u, &s->timer_watch);
 220 }
 221
 222 static char *sysv_translate_name(const char *name) {
 223         char *r;
 224
 225         if (!(r = new(char, strlen(name) + sizeof(".service"))))
 226                 return NULL;
 227
 228         if (startswith(name, "boot."))
 229                 /* Drop SuSE-style boot. prefix */
 230                 strcpy(stpcpy(r, name + 5), ".service");
 231         else if (endswith(name, ".sh"))
 232                 /* Drop Debian-style .sh suffix */
 233                 strcpy(stpcpy(r, name) - 3, ".service");
 234         else
 235                 /* Normal init scripts */
 236                 strcpy(stpcpy(r, name), ".service");
 237
 238         return r;
 239 }
 240
 241 static int sysv_translate_facility(const char *name, char **_r) {
 242
 243         static const char * const table[] = {
 244                 /* LSB defined facilities */
 245                 "$local_fs",  SPECIAL_LOCAL_FS_TARGET,
 246                 "$network",   SPECIAL_NETWORK_TARGET,
 247                 "$named",     SPECIAL_NSS_LOOKUP_TARGET,
 248                 "$portmap",   SPECIAL_RPCBIND_TARGET,
 249                 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
 250                 "$syslog",    SPECIAL_SYSLOG_TARGET,
 251                 "$time",      SPECIAL_RTC_SET_TARGET,
 252
 253                 /* Debian extensions */
 254                 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
 255                 "$mail-transfer-agent",  SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
 256                 "$x-display-manager",    SPECIAL_DISPLAY_MANAGER_SERVICE
 257         };
 258
 259         unsigned i;
 260         char *r;
 261
 262         for (i = 0; i < ELEMENTSOF(table); i += 2)
 263                 if (streq(table[i], name)) {
 264                         if (!(r = strdup(table[i+1])))
 265                                 return -ENOMEM;
 266
 267                         goto finish;
 268                 }
 269
 270         if (*name == '$')
 271                 return 0;
 272
 273         if (!(r = sysv_translate_name(name)))
 274                 return -ENOMEM;
 275
 276 finish:
 277
 278         if (_r)
 279                 *_r = r;
 280
 281         return 1;
 282 }
 283
 284 static int sysv_fix_order(Service *s) {
 285         Meta *other;
 286         int r;
 287
 288         assert(s);
 289
 290         if (s->sysv_start_priority < 0)
 291                 return 0;
 292
 293         /* For each pair of services where at least one lacks a LSB
 294          * header, we use the start priority value to order things. */
 295
 296         LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
 297                 Service *t;
 298                 UnitDependency d;
 299                 bool special_s, special_t;
 300
 301                 t = (Service*) other;
 302
 303                 if (s == t)
 304                         continue;
 305
 306                 if (t->sysv_start_priority < 0)
 307                         continue;
 308
 309                 /* If both units have modern headers we don't care
 310                  * about the priorities */
 311                 if ((!s->sysv_path || s->sysv_has_lsb) &&
 312                     (!t->sysv_path || t->sysv_has_lsb))
 313                         continue;
 314
 315                 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
 316                 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
 317
 318                 if (special_t && !special_s)
 319                         d = UNIT_AFTER;
 320                 else if (special_s && !special_t)
 321                         d = UNIT_BEFORE;
 322                 else if (t->sysv_start_priority < s->sysv_start_priority)
 323                         d = UNIT_AFTER;
 324                 else if (t->sysv_start_priority > s->sysv_start_priority)
 325                         d = UNIT_BEFORE;
 326                 else
 327                         continue;
 328
 329                 /* FIXME: Maybe we should compare the name here lexicographically? */
 330
 331                 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
 332                         return r;
 333         }
 334
 335         return 0;
 336 }
 337
 338 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
 339         ExecCommand *c;
 340
 341         if (!(c = new0(ExecCommand, 1)))
 342                 return NULL;
 343
 344         if (!(c->path = strdup(path))) {
 345                 free(c);
 346                 return NULL;
 347         }
 348
 349         if (!(c->argv = strv_new(path, arg1, NULL))) {
 350                 free(c->path);
 351                 free(c);
 352                 return NULL;
 353         }
 354
 355         return c;
 356 }
 357
 358 static int sysv_exec_commands(Service *s) {
 359         ExecCommand *c;
 360
 361         assert(s);
 362         assert(s->sysv_path);
 363
 364         if (!(c = exec_command_new(s->sysv_path, "start")))
 365                 return -ENOMEM;
 366         exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
 367
 368         if (!(c = exec_command_new(s->sysv_path, "stop")))
 369                 return -ENOMEM;
 370         exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
 371
 372         if (!(c = exec_command_new(s->sysv_path, "reload")))
 373                 return -ENOMEM;
 374         exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
 375
 376         return 0;
 377 }
 378
 379 static int service_load_sysv_path(Service *s, const char *path) {
 380         FILE *f;
 381         Unit *u;
 382         unsigned line = 0;
 383         int r;
 384         enum {
 385                 NORMAL,
 386                 DESCRIPTION,
 387                 LSB,
 388                 LSB_DESCRIPTION
 389         } state = NORMAL;
 390
 391         assert(s);
 392         assert(path);
 393
 394         u = UNIT(s);
 395
 396         if (!(f = fopen(path, "re"))) {
 397                 r = errno == ENOENT ? 0 : -errno;
 398                 goto finish;
 399         }
 400
 401         free(s->sysv_path);
 402         if (!(s->sysv_path = strdup(path))) {
 403                 r = -ENOMEM;
 404                 goto finish;
 405         }
 406
 407         while (!feof(f)) {
 408                 char l[LINE_MAX], *t;
 409
 410                 if (!fgets(l, sizeof(l), f)) {
 411                         if (feof(f))
 412                                 break;
 413
 414                         r = -errno;
 415                         log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
 416                         goto finish;
 417                 }
 418
 419                 line++;
 420
 421                 t = strstrip(l);
 422                 if (*t != '#')
 423                         continue;
 424
 425                 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
 426                         state = LSB;
 427                         s->sysv_has_lsb = true;
 428                         continue;
 429                 }
 430
 431                 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
 432                         state = NORMAL;
 433                         continue;
 434                 }
 435
 436                 t++;
 437                 t += strspn(t, WHITESPACE);
 438
 439                 if (state == NORMAL) {
 440
 441                         /* Try to parse Red Hat style chkconfig headers */
 442
 443                         if (startswith_no_case(t, "chkconfig:")) {
 444                                 int start_priority;
 445                                 char runlevels[16], *k;
 446
 447                                 state = NORMAL;
 448
 449                                 if (sscanf(t+10, "%15s %i %*i",
 450                                            runlevels,
 451                                            &start_priority) != 2) {
 452
 453                                         log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
 454                                         continue;
 455                                 }
 456
 457                                 /* A start priority gathered from the
 458                                  * symlink farms is preferred over the
 459                                  * data from the LSB header. */
 460                                 if (start_priority < 0 || start_priority > 99)
 461                                         log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
 462                                 else if (s->sysv_start_priority < 0)
 463                                         s->sysv_start_priority = start_priority;
 464
 465                                 char_array_0(runlevels);
 466                                 k = delete_chars(runlevels, WHITESPACE "-");
 467
 468                                 if (k[0]) {
 469                                         char *d;
 470
 471                                         if (!(d = strdup(k))) {
 472                                                 r = -ENOMEM;
 473                                                 goto finish;
 474                                         }
 475
 476                                         free(s->sysv_runlevels);
 477                                         s->sysv_runlevels = d;
 478                                 }
 479
 480                         } else if (startswith_no_case(t, "description:") &&
 481                                    !u->meta.description) {
 482
 483                                 size_t k = strlen(t);
 484                                 char *d;
 485
 486                                 if (t[k-1] == '\\') {
 487                                         state = DESCRIPTION;
 488                                         t[k-1] = 0;
 489                                 }
 490
 491                                 if (!(d = strdup(strstrip(t+12)))) {
 492                                         r = -ENOMEM;
 493                                         goto finish;
 494                                 }
 495
 496                                 free(u->meta.description);
 497                                 u->meta.description = d;
 498
 499                         } else if (startswith_no_case(t, "pidfile:")) {
 500
 501                                 char *fn;
 502
 503                                 state = NORMAL;
 504
 505                                 fn = strstrip(t+8);
 506                                 if (!path_is_absolute(fn)) {
 507                                         log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
 508                                         continue;
 509                                 }
 510
 511                                 if (!(fn = strdup(fn))) {
 512                                         r = -ENOMEM;
 513                                         goto finish;
 514                                 }
 515
 516                                 free(s->pid_file);
 517                                 s->pid_file = fn;
 518                         }
 519
 520                 } else if (state == DESCRIPTION) {
 521
 522                         /* Try to parse Red Hat style description
 523                          * continuation */
 524
 525                         size_t k = strlen(t);
 526                         char *d;
 527
 528                         if (t[k-1] == '\\')
 529                                 t[k-1] = 0;
 530                         else
 531                                 state = NORMAL;
 532
 533                         assert(u->meta.description);
 534                         if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
 535                                 r = -ENOMEM;
 536                                 goto finish;
 537                         }
 538
 539                         free(u->meta.description);
 540                         u->meta.description = d;
 541
 542                 } else if (state == LSB || state == LSB_DESCRIPTION) {
 543
 544                         if (startswith_no_case(t, "Provides:")) {
 545                                 char *i, *w;
 546                                 size_t z;
 547
 548                                 state = LSB;
 549
 550                                 FOREACH_WORD_QUOTED(w, z, t+9, i) {
 551                                         char *n, *m;
 552
 553                                         if (!(n = strndup(w, z))) {
 554                                                 r = -ENOMEM;
 555                                                 goto finish;
 556                                         }
 557
 558                                         r = sysv_translate_facility(n, &m);
 559                                         free(n);
 560
 561                                         if (r < 0)
 562                                                 goto finish;
 563
 564                                         if (r == 0)
 565                                                 continue;
 566
 567                                         if (unit_name_to_type(m) == UNIT_SERVICE)
 568                                                 r = unit_add_name(u, m);
 569                                         else if (s->sysv_enabled)
 570                                                 r = unit_add_two_dependencies_by_name_inverse(u, UNIT_AFTER, UNIT_WANTS, m, NULL, true);
 571                                         else
 572                                                 r = unit_add_dependency_by_name_inverse(u, UNIT_AFTER, m, NULL, true);
 573
 574                                         free(m);
 575
 576                                         if (r < 0)
 577                                                 goto finish;
 578                                 }
 579
 580                         } else if (startswith_no_case(t, "Required-Start:") ||
 581                                    startswith_no_case(t, "Should-Start:") ||
 582                                    startswith_no_case(t, "X-Start-Before:") ||
 583                                    startswith_no_case(t, "X-Start-After:")) {
 584                                 char *i, *w;
 585                                 size_t z;
 586
 587                                 state = LSB;
 588
 589                                 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
 590                                         char *n, *m;
 591
 592                                         if (!(n = strndup(w, z))) {
 593                                                 r = -ENOMEM;
 594                                                 goto finish;
 595                                         }
 596
 597                                         r = sysv_translate_facility(n, &m);
 598                                         free(n);
 599
 600                                         if (r < 0)
 601                                                 goto finish;
 602
 603                                         if (r == 0)
 604                                                 continue;
 605
 606                                         r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
 607                                         free(m);
 608
 609                                         if (r < 0)
 610                                                 goto finish;
 611                                 }
 612                         } else if (startswith_no_case(t, "Default-Start:")) {
 613                                 char *k, *d;
 614
 615                                 state = LSB;
 616
 617                                 k = delete_chars(t+14, WHITESPACE "-");
 618
 619                                 if (k[0] != 0) {
 620                                         if (!(d = strdup(k))) {
 621                                                 r = -ENOMEM;
 622                                                 goto finish;
 623                                         }
 624
 625                                         free(s->sysv_runlevels);
 626                                         s->sysv_runlevels = d;
 627                                 }
 628
 629                         } else if (startswith_no_case(t, "Description:") &&
 630                                    !u->meta.description) {
 631                                 char *d;
 632
 633                                 /* We use the long description only if
 634                                  * no short description is set. */
 635
 636                                 state = LSB_DESCRIPTION;
 637
 638                                 if (!(d = strdup(strstrip(t+12)))) {
 639                                         r = -ENOMEM;
 640                                         goto finish;
 641                                 }
 642
 643                                 free(u->meta.description);
 644                                 u->meta.description = d;
 645
 646                         } else if (startswith_no_case(t, "Short-Description:")) {
 647                                 char *d;
 648
 649                                 state = LSB;
 650
 651                                 if (!(d = strdup(strstrip(t+18)))) {
 652                                         r = -ENOMEM;
 653                                         goto finish;
 654                                 }
 655
 656                                 free(u->meta.description);
 657                                 u->meta.description = d;
 658
 659                         } else if (startswith_no_case(t, "X-Interactive:")) {
 660                                 int b;
 661
 662                                 if ((b = parse_boolean(strstrip(t+14))) < 0) {
 663                                         log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
 664                                         continue;
 665                                 }
 666
 667                                 if (b)
 668                                         s->exec_context.std_input = EXEC_INPUT_TTY;
 669                                 else
 670                                         s->exec_context.std_input = EXEC_INPUT_NULL;
 671
 672                         } else if (state == LSB_DESCRIPTION) {
 673
 674                                 if (startswith(l, "#\t") || startswith(l, "#  ")) {
 675                                         char *d;
 676
 677                                         assert(u->meta.description);
 678                                         if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
 679                                                 r = -ENOMEM;
 680                                                 goto finish;
 681                                         }
 682
 683                                         free(u->meta.description);
 684                                         u->meta.description = d;
 685                                 } else
 686                                         state = LSB;
 687                         }
 688                 }
 689         }
 690
 691         if ((r = sysv_exec_commands(s)) < 0)
 692                 goto finish;
 693
 694         if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
 695                 /* If there a runlevels configured for this service
 696                  * but none of the standard ones, then we assume this
 697                  * is some special kind of service (which might be
 698                  * needed for early boot) and don't create any links
 699                  * to it. */
 700
 701                 s->meta.default_dependencies = false;
 702
 703                 /* Don't timeout special services during boot (like fsck) */
 704                 s->timeout_usec = 0;
 705         }
 706
 707         /* Special setting for all SysV services */
 708         s->type = SERVICE_FORKING;
 709         s->valid_no_process = true;
 710         s->restart = SERVICE_ONCE;
 711         s->exec_context.std_output = s->meta.manager->sysv_console ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
 712         s->exec_context.kill_mode = KILL_PROCESS_GROUP;
 713
 714         u->meta.load_state = UNIT_LOADED;
 715         r = 0;
 716
 717 finish:
 718
 719         if (f)
 720                 fclose(f);
 721
 722         return r;
 723 }
 724
 725 static int service_load_sysv_name(Service *s, const char *name) {
 726         char **p;
 727
 728         assert(s);
 729         assert(name);
 730
 731         /* For SysV services we strip the boot. or .sh
 732          * prefixes/suffixes. */
 733         if (startswith(name, "boot.") ||
 734             endswith(name, ".sh.service"))
 735                 return -ENOENT;
 736
 737         STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
 738                 char *path;
 739                 int r;
 740
 741                 if (asprintf(&path, "%s/%s", *p, name) < 0)
 742                         return -ENOMEM;
 743
 744                 assert(endswith(path, ".service"));
 745                 path[strlen(path)-8] = 0;
 746
 747                 r = service_load_sysv_path(s, path);
 748
 749                 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
 750                         /* Try Debian style xxx.sh source'able init scripts */
 751                         strcat(path, ".sh");
 752                         r = service_load_sysv_path(s, path);
 753                 }
 754
 755                 free(path);
 756
 757                 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
 758                         /* Try SUSE style boot.xxx init scripts */
 759
 760                         if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
 761                                 return -ENOMEM;
 762
 763                         path[strlen(path)-8] = 0;
 764                         r = service_load_sysv_path(s, path);
 765                         free(path);
 766                 }
 767
 768                 if (r < 0)
 769                         return r;
 770
 771                 if ((s->meta.load_state != UNIT_STUB))
 772                         break;
 773         }
 774
 775         return 0;
 776 }
 777
 778 static int service_load_sysv(Service *s) {
 779         const char *t;
 780         Iterator i;
 781         int r;
 782
 783         assert(s);
 784
 785         /* Load service data from SysV init scripts, preferably with
 786          * LSB headers ... */
 787
 788         if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
 789                 return 0;
 790
 791         if ((t = s->meta.id))
 792                 if ((r = service_load_sysv_name(s, t)) < 0)
 793                         return r;
 794
 795         if (s->meta.load_state == UNIT_STUB)
 796                 SET_FOREACH(t, s->meta.names, i) {
 797                         if (t == s->meta.id)
 798                                 continue;
 799
 800                         if ((r = service_load_sysv_name(s, t)) < 0)
 801                                 return r;
 802
 803                         if (s->meta.load_state != UNIT_STUB)
 804                                 break;
 805                 }
 806
 807         return 0;
 808 }
 809
 810 static int service_add_bus_name(Service *s) {
 811         char *n;
 812         int r;
 813
 814         assert(s);
 815         assert(s->bus_name);
 816
 817         if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
 818                 return 0;
 819
 820         r = unit_merge_by_name(UNIT(s), n);
 821         free(n);
 822
 823         return r;
 824 }
 825
 826 static int service_verify(Service *s) {
 827         assert(s);
 828
 829         if (s->meta.load_state != UNIT_LOADED)
 830                 return 0;
 831
 832         if (!s->exec_command[SERVICE_EXEC_START]) {
 833                 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
 834                 return -EINVAL;
 835         }
 836
 837         if (s->type != SERVICE_ONESHOT &&
 838             s->exec_command[SERVICE_EXEC_START]->command_next) {
 839                 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
 840                 return -EINVAL;
 841         }
 842
 843         if (s->type == SERVICE_DBUS && !s->bus_name) {
 844                 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
 845                 return -EINVAL;
 846         }
 847
 848         if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
 849                 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
 850                 return -EINVAL;
 851         }
 852
 853         return 0;
 854 }
 855
 856 static int service_add_default_dependencies(Service *s) {
 857         int r;
 858
 859         assert(s);
 860
 861         /* Add a number of automatic dependencies useful for the
 862          * majority of services. */
 863
 864         /* First, pull in base system */
 865         if (s->meta.manager->running_as == MANAGER_SYSTEM) {
 866
 867                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
 868                         return r;
 869
 870         } else if (s->meta.manager->running_as == MANAGER_SESSION) {
 871
 872                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
 873                         return r;
 874         }
 875
 876         /* Second, activate normal shutdown */
 877         return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true);
 878 }
 879
 880 static int service_load(Unit *u) {
 881         int r;
 882         Service *s = SERVICE(u);
 883
 884         assert(s);
 885
 886         /* Load a .service file */
 887         if ((r = unit_load_fragment(u)) < 0)
 888                 return r;
 889
 890         /* Load a classic init script as a fallback, if we couldn't find anything */
 891         if (u->meta.load_state == UNIT_STUB)
 892                 if ((r = service_load_sysv(s)) < 0)
 893                         return r;
 894
 895         /* Still nothing found? Then let's give up */
 896         if (u->meta.load_state == UNIT_STUB)
 897                 return -ENOENT;
 898
 899         /* We were able to load something, then let's add in the
 900          * dropin directories. */
 901         if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
 902                 return r;
 903
 904         /* This is a new unit? Then let's add in some extras */
 905         if (u->meta.load_state == UNIT_LOADED) {
 906                 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
 907                         return r;
 908
 909                 if ((r = unit_add_default_cgroup(u)) < 0)
 910                         return r;
 911
 912                 if ((r = sysv_fix_order(s)) < 0)
 913                         return r;
 914
 915                 if (s->bus_name) {
 916                         if ((r = service_add_bus_name(s)) < 0)
 917                                 return r;
 918
 919                         if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
 920                                 return r;
 921                 }
 922
 923                 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
 924                         s->notify_access = NOTIFY_MAIN;
 925
 926                 if (s->type == SERVICE_DBUS || s->bus_name)
 927                         if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
 928                                 return r;
 929
 930                 if (s->meta.default_dependencies)
 931                         if ((r = service_add_default_dependencies(s)) < 0)
 932                                 return r;
 933         }
 934
 935         return service_verify(s);
 936 }
 937
 938 static void service_dump(Unit *u, FILE *f, const char *prefix) {
 939
 940         ServiceExecCommand c;
 941         Service *s = SERVICE(u);
 942         const char *prefix2;
 943         char *p2;
 944
 945         assert(s);
 946
 947         p2 = strappend(prefix, "\t");
 948         prefix2 = p2 ? p2 : prefix;
 949
 950         fprintf(f,
 951                 "%sService State: %s\n"
 952                 "%sPermissionsStartOnly: %s\n"
 953                 "%sRootDirectoryStartOnly: %s\n"
 954                 "%sValidNoProcess: %s\n"
 955                 "%sType: %s\n"
 956                 "%sRestart: %s\n"
 957                 "%sNotifyAccess: %s\n",
 958                 prefix, service_state_to_string(s->state),
 959                 prefix, yes_no(s->permissions_start_only),
 960                 prefix, yes_no(s->root_directory_start_only),
 961                 prefix, yes_no(s->valid_no_process),
 962                 prefix, service_type_to_string(s->type),
 963                 prefix, service_restart_to_string(s->restart),
 964                 prefix, notify_access_to_string(s->notify_access));
 965
 966         if (s->control_pid > 0)
 967                 fprintf(f,
 968                         "%sControl PID: %lu\n",
 969                         prefix, (unsigned long) s->control_pid);
 970
 971         if (s->main_pid > 0)
 972                 fprintf(f,
 973                         "%sMain PID: %lu\n",
 974                         prefix, (unsigned long) s->main_pid);
 975
 976         if (s->pid_file)
 977                 fprintf(f,
 978                         "%sPIDFile: %s\n",
 979                         prefix, s->pid_file);
 980
 981         if (s->bus_name)
 982                 fprintf(f,
 983                         "%sBusName: %s\n"
 984                         "%sBus Name Good: %s\n",
 985                         prefix, s->bus_name,
 986                         prefix, yes_no(s->bus_name_good));
 987
 988         exec_context_dump(&s->exec_context, f, prefix);
 989
 990         for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
 991
 992                 if (!s->exec_command[c])
 993                         continue;
 994
 995                 fprintf(f, "%s-> %s:\n",
 996                         prefix, service_exec_command_to_string(c));
 997
 998                 exec_command_dump_list(s->exec_command[c], f, prefix2);
 999         }
1000
1001         if (s->sysv_path)
1002                 fprintf(f,
1003                         "%sSysV Init Script Path: %s\n"
1004                         "%sSysV Init Script has LSB Header: %s\n",
1005                         prefix, s->sysv_path,
1006                         prefix, yes_no(s->sysv_has_lsb));
1007
1008         if (s->sysv_start_priority >= 0)
1009                 fprintf(f,
1010                         "%sSysVStartPriority: %i\n"
1011                         "%sSysVEnabled: %s\n",
1012                         prefix, s->sysv_start_priority,
1013                         prefix, yes_no(s->sysv_enabled));
1014
1015         if (s->sysv_runlevels)
1016                 fprintf(f, "%sSysVRunLevels: %s\n",
1017                         prefix, s->sysv_runlevels);
1018
1019         if (s->status_text)
1020                 fprintf(f, "%sStatus Text: %s\n",
1021                         prefix, s->status_text);
1022
1023         free(p2);
1024 }
1025
1026 static int service_load_pid_file(Service *s) {
1027         char *k;
1028         int r;
1029         pid_t pid;
1030
1031         assert(s);
1032
1033         if (s->main_pid_known)
1034                 return 0;
1035
1036         assert(s->main_pid <= 0);
1037
1038         if (!s->pid_file)
1039                 return -ENOENT;
1040
1041         if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1042                 return r;
1043
1044         r = parse_pid(k, &pid);
1045         free(k);
1046
1047         if (r < 0)
1048                 return r;
1049
1050         if (kill(pid, 0) < 0 && errno != EPERM) {
1051                 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1052                             (unsigned long) pid, s->pid_file);
1053                 return -ESRCH;
1054         }
1055
1056         if ((r = service_set_main_pid(s, pid)) < 0)
1057                 return r;
1058
1059         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1060                 /* FIXME: we need to do something here */
1061                 return r;
1062
1063         return 0;
1064 }
1065
1066 static int service_get_sockets(Service *s, Set **_set) {
1067         Set *set;
1068         Iterator i;
1069         char *t;
1070         int r;
1071
1072         assert(s);
1073         assert(_set);
1074
1075         if (s->socket_fd >= 0)
1076                 return 0;
1077
1078         /* Collects all Socket objects that belong to this
1079          * service. Note that a service might have multiple sockets
1080          * via multiple names. */
1081
1082         if (!(set = set_new(NULL, NULL)))
1083                 return -ENOMEM;
1084
1085         SET_FOREACH(t, s->meta.names, i) {
1086                 char *k;
1087                 Unit *p;
1088
1089                 /* Look for all socket objects that go by any of our
1090                  * units and collect their fds */
1091
1092                 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1093                         r = -ENOMEM;
1094                         goto fail;
1095                 }
1096
1097                 p = manager_get_unit(s->meta.manager, k);
1098                 free(k);
1099
1100                 if (!p)
1101                         continue;
1102
1103                 if ((r = set_put(set, p)) < 0)
1104                         goto fail;
1105         }
1106
1107         *_set = set;
1108         return 0;
1109
1110 fail:
1111         set_free(set);
1112         return r;
1113 }
1114
1115 static int service_notify_sockets_dead(Service *s) {
1116         Iterator i;
1117         Set *set;
1118         Socket *sock;
1119         int r;
1120
1121         assert(s);
1122
1123         if (s->socket_fd >= 0)
1124                 return 0;
1125
1126         /* Notifies all our sockets when we die */
1127         if ((r = service_get_sockets(s, &set)) < 0)
1128                 return r;
1129
1130         SET_FOREACH(sock, set, i)
1131                 socket_notify_service_dead(sock);
1132
1133         set_free(set);
1134
1135         return 0;
1136 }
1137
1138 static void service_set_state(Service *s, ServiceState state) {
1139         ServiceState old_state;
1140         assert(s);
1141
1142         old_state = s->state;
1143         s->state = state;
1144
1145         if (state != SERVICE_START_PRE &&
1146             state != SERVICE_START &&
1147             state != SERVICE_START_POST &&
1148             state != SERVICE_RELOAD &&
1149             state != SERVICE_STOP &&
1150             state != SERVICE_STOP_SIGTERM &&
1151             state != SERVICE_STOP_SIGKILL &&
1152             state != SERVICE_STOP_POST &&
1153             state != SERVICE_FINAL_SIGTERM &&
1154             state != SERVICE_FINAL_SIGKILL &&
1155             state != SERVICE_AUTO_RESTART)
1156                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1157
1158         if (state != SERVICE_START &&
1159             state != SERVICE_START_POST &&
1160             state != SERVICE_RUNNING &&
1161             state != SERVICE_RELOAD &&
1162             state != SERVICE_STOP &&
1163             state != SERVICE_STOP_SIGTERM &&
1164             state != SERVICE_STOP_SIGKILL)
1165                 service_unwatch_main_pid(s);
1166
1167         if (state != SERVICE_START_PRE &&
1168             state != SERVICE_START &&
1169             state != SERVICE_START_POST &&
1170             state != SERVICE_RELOAD &&
1171             state != SERVICE_STOP &&
1172             state != SERVICE_STOP_SIGTERM &&
1173             state != SERVICE_STOP_SIGKILL &&
1174             state != SERVICE_STOP_POST &&
1175             state != SERVICE_FINAL_SIGTERM &&
1176             state != SERVICE_FINAL_SIGKILL) {
1177                 service_unwatch_control_pid(s);
1178                 s->control_command = NULL;
1179                 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1180         }
1181
1182         if (state == SERVICE_DEAD ||
1183             state == SERVICE_STOP ||
1184             state == SERVICE_STOP_SIGTERM ||
1185             state == SERVICE_STOP_SIGKILL ||
1186             state == SERVICE_STOP_POST ||
1187             state == SERVICE_FINAL_SIGTERM ||
1188             state == SERVICE_FINAL_SIGKILL ||
1189             state == SERVICE_MAINTENANCE ||
1190             state == SERVICE_AUTO_RESTART)
1191                 service_notify_sockets_dead(s);
1192
1193         if (state != SERVICE_START_PRE &&
1194             state != SERVICE_START &&
1195             state != SERVICE_START_POST &&
1196             state != SERVICE_RUNNING &&
1197             state != SERVICE_RELOAD &&
1198             state != SERVICE_STOP &&
1199             state != SERVICE_STOP_SIGTERM &&
1200             state != SERVICE_STOP_SIGKILL &&
1201             state != SERVICE_STOP_POST &&
1202             state != SERVICE_FINAL_SIGTERM &&
1203             state != SERVICE_FINAL_SIGKILL &&
1204             !(state == SERVICE_DEAD && s->meta.job)) {
1205                 service_close_socket_fd(s);
1206                 service_connection_unref(s);
1207         }
1208
1209         /* For the inactive states unit_notify() will trim the cgroup,
1210          * but for exit we have to do that ourselves... */
1211         if (state == SERVICE_EXITED)
1212                 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1213
1214         if (old_state != state)
1215                 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1216
1217         unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1218 }
1219
1220 static int service_coldplug(Unit *u) {
1221         Service *s = SERVICE(u);
1222         int r;
1223
1224         assert(s);
1225         assert(s->state == SERVICE_DEAD);
1226
1227         if (s->deserialized_state != s->state) {
1228
1229                 if (s->deserialized_state == SERVICE_START_PRE ||
1230                     s->deserialized_state == SERVICE_START ||
1231                     s->deserialized_state == SERVICE_START_POST ||
1232                     s->deserialized_state == SERVICE_RELOAD ||
1233                     s->deserialized_state == SERVICE_STOP ||
1234                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1235                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1236                     s->deserialized_state == SERVICE_STOP_POST ||
1237                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1238                     s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1239                     s->deserialized_state == SERVICE_AUTO_RESTART) {
1240
1241                         if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1242                                 usec_t k;
1243
1244                                 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1245
1246                                 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1247                                         return r;
1248                         }
1249                 }
1250
1251                 if ((s->deserialized_state == SERVICE_START &&
1252                      (s->type == SERVICE_FORKING ||
1253                       s->type == SERVICE_DBUS ||
1254                       s->type == SERVICE_ONESHOT ||
1255                       s->type == SERVICE_NOTIFY)) ||
1256                     s->deserialized_state == SERVICE_START_POST ||
1257                     s->deserialized_state == SERVICE_RUNNING ||
1258                     s->deserialized_state == SERVICE_RELOAD ||
1259                     s->deserialized_state == SERVICE_STOP ||
1260                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1261                     s->deserialized_state == SERVICE_STOP_SIGKILL)
1262                         if (s->main_pid > 0)
1263                                 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1264                                         return r;
1265
1266                 if (s->deserialized_state == SERVICE_START_PRE ||
1267                     s->deserialized_state == SERVICE_START ||
1268                     s->deserialized_state == SERVICE_START_POST ||
1269                     s->deserialized_state == SERVICE_RELOAD ||
1270                     s->deserialized_state == SERVICE_STOP ||
1271                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1272                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1273                     s->deserialized_state == SERVICE_STOP_POST ||
1274                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1275                     s->deserialized_state == SERVICE_FINAL_SIGKILL)
1276                         if (s->control_pid > 0)
1277                                 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1278                                         return r;
1279
1280                 service_set_state(s, s->deserialized_state);
1281         }
1282
1283         return 0;
1284 }
1285
1286 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1287         Iterator i;
1288         int r;
1289         int *rfds = NULL;
1290         unsigned rn_fds = 0;
1291         Set *set;
1292         Socket *sock;
1293
1294         assert(s);
1295         assert(fds);
1296         assert(n_fds);
1297
1298         if (s->socket_fd >= 0)
1299                 return 0;
1300
1301         if ((r = service_get_sockets(s, &set)) < 0)
1302                 return r;
1303
1304         SET_FOREACH(sock, set, i) {
1305                 int *cfds;
1306                 unsigned cn_fds;
1307
1308                 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1309                         goto fail;
1310
1311                 if (!cfds)
1312                         continue;
1313
1314                 if (!rfds) {
1315                         rfds = cfds;
1316                         rn_fds = cn_fds;
1317                 } else {
1318                         int *t;
1319
1320                         if (!(t = new(int, rn_fds+cn_fds))) {
1321                                 free(cfds);
1322                                 r = -ENOMEM;
1323                                 goto fail;
1324                         }
1325
1326                         memcpy(t, rfds, rn_fds);
1327                         memcpy(t+rn_fds, cfds, cn_fds);
1328                         free(rfds);
1329                         free(cfds);
1330
1331                         rfds = t;
1332                         rn_fds = rn_fds+cn_fds;
1333                 }
1334         }
1335
1336         *fds = rfds;
1337         *n_fds = rn_fds;
1338
1339         set_free(set);
1340
1341         return 0;
1342
1343 fail:
1344         set_free(set);
1345         free(rfds);
1346
1347         return r;
1348 }
1349
1350 static int service_spawn(
1351                 Service *s,
1352                 ExecCommand *c,
1353                 bool timeout,
1354                 bool pass_fds,
1355                 bool apply_permissions,
1356                 bool apply_chroot,
1357                 bool apply_tty_stdin,
1358                 bool set_notify_socket,
1359                 pid_t *_pid) {
1360
1361         pid_t pid;
1362         int r;
1363         int *fds = NULL, *fdsbuf = NULL;
1364         unsigned n_fds = 0, n_env = 0;
1365         char **argv = NULL, **final_env = NULL, **our_env = NULL;
1366
1367         assert(s);
1368         assert(c);
1369         assert(_pid);
1370
1371         if (pass_fds ||
1372             s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1373             s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1374             s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1375
1376                 if (s->socket_fd >= 0) {
1377                         fds = &s->socket_fd;
1378                         n_fds = 1;
1379                 } else {
1380                         if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1381                                 goto fail;
1382
1383                         fds = fdsbuf;
1384                 }
1385         }
1386
1387         if (timeout && s->timeout_usec) {
1388                 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1389                         goto fail;
1390         } else
1391                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1392
1393         if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1394                 r = -ENOMEM;
1395                 goto fail;
1396         }
1397
1398         if (!(our_env = new0(char*, 3))) {
1399                 r = -ENOMEM;
1400                 goto fail;
1401         }
1402
1403         if (set_notify_socket)
1404                 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1405                         r = -ENOMEM;
1406                         goto fail;
1407                 }
1408
1409         if (s->main_pid > 0)
1410                 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1411                         r = -ENOMEM;
1412                         goto fail;
1413                 }
1414
1415         if (!(final_env = strv_env_merge(2,
1416                                          s->meta.manager->environment,
1417                                          our_env,
1418                                          NULL))) {
1419                 r = -ENOMEM;
1420                 goto fail;
1421         }
1422
1423         r = exec_spawn(c,
1424                        argv,
1425                        &s->exec_context,
1426                        fds, n_fds,
1427                        final_env,
1428                        apply_permissions,
1429                        apply_chroot,
1430                        apply_tty_stdin,
1431                        s->meta.manager->confirm_spawn,
1432                        s->meta.cgroup_bondings,
1433                        &pid);
1434
1435         if (r < 0)
1436                 goto fail;
1437
1438
1439         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1440                 /* FIXME: we need to do something here */
1441                 goto fail;
1442
1443         free(fdsbuf);
1444         strv_free(argv);
1445         strv_free(our_env);
1446         strv_free(final_env);
1447
1448         *_pid = pid;
1449
1450         return 0;
1451
1452 fail:
1453         free(fdsbuf);
1454         strv_free(argv);
1455         strv_free(our_env);
1456         strv_free(final_env);
1457
1458         if (timeout)
1459                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1460
1461         return r;
1462 }
1463
1464 static int main_pid_good(Service *s) {
1465         assert(s);
1466
1467         /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1468          * don't know */
1469
1470         /* If we know the pid file, then lets just check if it is
1471          * still valid */
1472         if (s->main_pid_known)
1473                 return s->main_pid > 0;
1474
1475         /* We don't know the pid */
1476         return -EAGAIN;
1477 }
1478
1479 static int control_pid_good(Service *s) {
1480         assert(s);
1481
1482         return s->control_pid > 0;
1483 }
1484
1485 static int cgroup_good(Service *s) {
1486         int r;
1487
1488         assert(s);
1489
1490         if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1491                 return r;
1492
1493         return !r;
1494 }
1495
1496 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1497         int r;
1498         assert(s);
1499
1500         if (!success)
1501                 s->failure = true;
1502
1503         if (allow_restart &&
1504             !s->forbid_restart &&
1505             (s->restart == SERVICE_RESTART_ALWAYS ||
1506              (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1507
1508                 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1509                         goto fail;
1510
1511                 service_set_state(s, SERVICE_AUTO_RESTART);
1512         } else
1513                 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
1514
1515         s->forbid_restart = false;
1516
1517         return;
1518
1519 fail:
1520         log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1521         service_enter_dead(s, false, false);
1522 }
1523
1524 static void service_enter_signal(Service *s, ServiceState state, bool success);
1525
1526 static void service_enter_stop_post(Service *s, bool success) {
1527         int r;
1528         assert(s);
1529
1530         if (!success)
1531                 s->failure = true;
1532
1533         service_unwatch_control_pid(s);
1534
1535         s->control_command_id = SERVICE_EXEC_STOP_POST;
1536         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1537                 if ((r = service_spawn(s,
1538                                        s->control_command,
1539                                        true,
1540                                        false,
1541                                        !s->permissions_start_only,
1542                                        !s->root_directory_start_only,
1543                                        true,
1544                                        false,
1545                                        &s->control_pid)) < 0)
1546                         goto fail;
1547
1548
1549                 service_set_state(s, SERVICE_STOP_POST);
1550         } else
1551                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1552
1553         return;
1554
1555 fail:
1556         log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1557         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1558 }
1559
1560 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1561         int r;
1562         bool sent = false;
1563
1564         assert(s);
1565
1566         if (!success)
1567                 s->failure = true;
1568
1569         if (s->exec_context.kill_mode != KILL_NONE) {
1570                 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1571
1572                 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1573
1574                         if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
1575                                 if (r != -EAGAIN && r != -ESRCH)
1576                                         goto fail;
1577                         } else
1578                                 sent = true;
1579                 }
1580
1581                 if (!sent) {
1582                         r = 0;
1583
1584                         if (s->main_pid > 0) {
1585                                 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1586                                         r = -errno;
1587                                 else
1588                                         sent = true;
1589                         }
1590
1591                         if (s->control_pid > 0) {
1592                                 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1593                                         r = -errno;
1594                                 else
1595                                         sent = true;
1596                         }
1597
1598                         if (r < 0)
1599                                 goto fail;
1600                 }
1601         }
1602
1603         if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1604                 if (s->timeout_usec > 0)
1605                         if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1606                                 goto fail;
1607
1608                 service_set_state(s, state);
1609         } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1610                 service_enter_stop_post(s, true);
1611         else
1612                 service_enter_dead(s, true, true);
1613
1614         return;
1615
1616 fail:
1617         log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1618
1619         if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1620                 service_enter_stop_post(s, false);
1621         else
1622                 service_enter_dead(s, false, true);
1623 }
1624
1625 static void service_enter_stop(Service *s, bool success) {
1626         int r;
1627
1628         assert(s);
1629
1630         if (!success)
1631                 s->failure = true;
1632
1633         service_unwatch_control_pid(s);
1634
1635         s->control_command_id = SERVICE_EXEC_STOP;
1636         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1637                 if ((r = service_spawn(s,
1638                                        s->control_command,
1639                                        true,
1640                                        false,
1641                                        !s->permissions_start_only,
1642                                        !s->root_directory_start_only,
1643                                        false,
1644                                        false,
1645                                        &s->control_pid)) < 0)
1646                         goto fail;
1647
1648                 service_set_state(s, SERVICE_STOP);
1649         } else
1650                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1651
1652         return;
1653
1654 fail:
1655         log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1656         service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1657 }
1658
1659 static void service_enter_running(Service *s, bool success) {
1660         int main_pid_ok, cgroup_ok;
1661         assert(s);
1662
1663         if (!success)
1664                 s->failure = true;
1665
1666         main_pid_ok = main_pid_good(s);
1667         cgroup_ok = cgroup_good(s);
1668
1669         if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1670             (s->bus_name_good || s->type != SERVICE_DBUS))
1671                 service_set_state(s, SERVICE_RUNNING);
1672         else if (s->valid_no_process)
1673                 service_set_state(s, SERVICE_EXITED);
1674         else
1675                 service_enter_stop(s, true);
1676 }
1677
1678 static void service_enter_start_post(Service *s) {
1679         int r;
1680         assert(s);
1681
1682         service_unwatch_control_pid(s);
1683
1684         s->control_command_id = SERVICE_EXEC_START_POST;
1685         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1686                 if ((r = service_spawn(s,
1687                                        s->control_command,
1688                                        true,
1689                                        false,
1690                                        !s->permissions_start_only,
1691                                        !s->root_directory_start_only,
1692                                        false,
1693                                        false,
1694                                        &s->control_pid)) < 0)
1695                         goto fail;
1696
1697                 service_set_state(s, SERVICE_START_POST);
1698         } else
1699                 service_enter_running(s, true);
1700
1701         return;
1702
1703 fail:
1704         log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1705         service_enter_stop(s, false);
1706 }
1707
1708 static void service_enter_start(Service *s) {
1709         pid_t pid;
1710         int r;
1711
1712         assert(s);
1713
1714         assert(s->exec_command[SERVICE_EXEC_START]);
1715         assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
1716
1717         if (s->type == SERVICE_FORKING)
1718                 service_unwatch_control_pid(s);
1719         else
1720                 service_unwatch_main_pid(s);
1721
1722         s->control_command_id = SERVICE_EXEC_START;
1723         s->control_command = s->exec_command[SERVICE_EXEC_START];
1724
1725         if ((r = service_spawn(s,
1726                                s->control_command,
1727                                s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1728                                true,
1729                                true,
1730                                true,
1731                                true,
1732                                s->notify_access != NOTIFY_NONE,
1733                                &pid)) < 0)
1734                 goto fail;
1735
1736         if (s->type == SERVICE_SIMPLE) {
1737                 /* For simple services we immediately start
1738                  * the START_POST binaries. */
1739
1740                 service_set_main_pid(s, pid);
1741                 service_enter_start_post(s);
1742
1743         } else  if (s->type == SERVICE_FORKING) {
1744
1745                 /* For forking services we wait until the start
1746                  * process exited. */
1747
1748                 s->control_pid = pid;
1749                 service_set_state(s, SERVICE_START);
1750
1751         } else if (s->type == SERVICE_ONESHOT ||
1752                    s->type == SERVICE_DBUS ||
1753                    s->type == SERVICE_NOTIFY) {
1754
1755                 /* For oneshot services we wait until the start
1756                  * process exited, too, but it is our main process. */
1757
1758                 /* For D-Bus services we know the main pid right away,
1759                  * but wait for the bus name to appear on the
1760                  * bus. Notify services are similar. */
1761
1762                 service_set_main_pid(s, pid);
1763                 service_set_state(s, SERVICE_START);
1764         } else
1765                 assert_not_reached("Unknown service type");
1766
1767         return;
1768
1769 fail:
1770         log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
1771         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1772 }
1773
1774 static void service_enter_start_pre(Service *s) {
1775         int r;
1776
1777         assert(s);
1778
1779         service_unwatch_control_pid(s);
1780
1781         s->control_command_id = SERVICE_EXEC_START_PRE;
1782         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1783                 if ((r = service_spawn(s,
1784                                        s->control_command,
1785                                        true,
1786                                        false,
1787                                        !s->permissions_start_only,
1788                                        !s->root_directory_start_only,
1789                                        true,
1790                                        false,
1791                                        &s->control_pid)) < 0)
1792                         goto fail;
1793
1794                 service_set_state(s, SERVICE_START_PRE);
1795         } else
1796                 service_enter_start(s);
1797
1798         return;
1799
1800 fail:
1801         log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
1802         service_enter_dead(s, false, true);
1803 }
1804
1805 static void service_enter_restart(Service *s) {
1806         int r;
1807         DBusError error;
1808
1809         assert(s);
1810         dbus_error_init(&error);
1811
1812         service_enter_dead(s, true, false);
1813
1814         if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
1815                 goto fail;
1816
1817         log_debug("%s scheduled restart job.", s->meta.id);
1818         return;
1819
1820 fail:
1821         log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
1822         service_enter_dead(s, false, false);
1823
1824         dbus_error_free(&error);
1825 }
1826
1827 static void service_enter_reload(Service *s) {
1828         int r;
1829
1830         assert(s);
1831
1832         service_unwatch_control_pid(s);
1833
1834         s->control_command_id = SERVICE_EXEC_RELOAD;
1835         if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1836                 if ((r = service_spawn(s,
1837                                        s->control_command,
1838                                        true,
1839                                        false,
1840                                        !s->permissions_start_only,
1841                                        !s->root_directory_start_only,
1842                                        false,
1843                                        false,
1844                                        &s->control_pid)) < 0)
1845                         goto fail;
1846
1847                 service_set_state(s, SERVICE_RELOAD);
1848         } else
1849                 service_enter_running(s, true);
1850
1851         return;
1852
1853 fail:
1854         log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
1855         service_enter_stop(s, false);
1856 }
1857
1858 static void service_run_next_control(Service *s, bool success) {
1859         int r;
1860
1861         assert(s);
1862         assert(s->control_command);
1863         assert(s->control_command->command_next);
1864
1865         if (!success)
1866                 s->failure = true;
1867
1868         assert(s->control_command_id != SERVICE_EXEC_START);
1869
1870         s->control_command = s->control_command->command_next;
1871         service_unwatch_control_pid(s);
1872
1873         if ((r = service_spawn(s,
1874                                s->control_command,
1875                                true,
1876                                false,
1877                                !s->permissions_start_only,
1878                                !s->root_directory_start_only,
1879                                s->control_command_id == SERVICE_EXEC_START_PRE ||
1880                                s->control_command_id == SERVICE_EXEC_STOP_POST,
1881                                false,
1882                                &s->control_pid)) < 0)
1883                 goto fail;
1884
1885         return;
1886
1887 fail:
1888         log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
1889
1890         if (s->state == SERVICE_START_PRE)
1891                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1892         else if (s->state == SERVICE_STOP)
1893                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1894         else if (s->state == SERVICE_STOP_POST)
1895                 service_enter_dead(s, false, true);
1896         else
1897                 service_enter_stop(s, false);
1898 }
1899
1900 static void service_run_next_main(Service *s, bool success) {
1901         pid_t pid;
1902         int r;
1903
1904         assert(s);
1905         assert(s->control_command);
1906         assert(s->control_command->command_next);
1907
1908         if (!success)
1909                 s->failure = true;
1910
1911         assert(s->control_command_id == SERVICE_EXEC_START);
1912         assert(s->type == SERVICE_ONESHOT);
1913
1914         s->control_command = s->control_command->command_next;
1915         service_unwatch_main_pid(s);
1916
1917         if ((r = service_spawn(s,
1918                                s->control_command,
1919                                false,
1920                                true,
1921                                true,
1922                                true,
1923                                true,
1924                                s->notify_access != NOTIFY_NONE,
1925                                &pid)) < 0)
1926                 goto fail;
1927
1928         service_set_main_pid(s, pid);
1929
1930         return;
1931
1932 fail:
1933         log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
1934         service_enter_stop(s, false);
1935 }
1936
1937 static int service_start(Unit *u) {
1938         Service *s = SERVICE(u);
1939
1940         assert(s);
1941
1942         /* We cannot fulfill this request right now, try again later
1943          * please! */
1944         if (s->state == SERVICE_STOP ||
1945             s->state == SERVICE_STOP_SIGTERM ||
1946             s->state == SERVICE_STOP_SIGKILL ||
1947             s->state == SERVICE_STOP_POST ||
1948             s->state == SERVICE_FINAL_SIGTERM ||
1949             s->state == SERVICE_FINAL_SIGKILL)
1950                 return -EAGAIN;
1951
1952         /* Already on it! */
1953         if (s->state == SERVICE_START_PRE ||
1954             s->state == SERVICE_START ||
1955             s->state == SERVICE_START_POST)
1956                 return 0;
1957
1958         assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
1959
1960         /* Make sure we don't enter a busy loop of some kind. */
1961         if (!ratelimit_test(&s->ratelimit)) {
1962                 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1963                 return -ECANCELED;
1964         }
1965
1966         if ((s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1967              s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1968              s->exec_context.std_error == EXEC_OUTPUT_SOCKET) &&
1969             s->socket_fd < 0) {
1970                 log_warning("%s can only be started with a per-connection socket.", u->meta.id);
1971                 return -EINVAL;
1972         }
1973
1974         s->failure = false;
1975         s->main_pid_known = false;
1976         s->forbid_restart = false;
1977
1978         service_enter_start_pre(s);
1979         return 0;
1980 }
1981
1982 static int service_stop(Unit *u) {
1983         Service *s = SERVICE(u);
1984
1985         assert(s);
1986
1987         /* This is a user request, so don't do restarts on this
1988          * shutdown. */
1989         s->forbid_restart = true;
1990
1991         /* Already on it */
1992         if (s->state == SERVICE_STOP ||
1993             s->state == SERVICE_STOP_SIGTERM ||
1994             s->state == SERVICE_STOP_SIGKILL ||
1995             s->state == SERVICE_STOP_POST ||
1996             s->state == SERVICE_FINAL_SIGTERM ||
1997             s->state == SERVICE_FINAL_SIGKILL)
1998                 return 0;
1999
2000         /* Don't allow a restart */
2001         if (s->state == SERVICE_AUTO_RESTART) {
2002                 service_set_state(s, SERVICE_DEAD);
2003                 return 0;
2004         }
2005
2006         /* If there's already something running we go directly into
2007          * kill mode. */
2008         if (s->state == SERVICE_START_PRE ||
2009             s->state == SERVICE_START ||
2010             s->state == SERVICE_START_POST ||
2011             s->state == SERVICE_RELOAD) {
2012                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2013                 return 0;
2014         }
2015
2016         assert(s->state == SERVICE_RUNNING ||
2017                s->state == SERVICE_EXITED);
2018
2019         service_enter_stop(s, true);
2020         return 0;
2021 }
2022
2023 static int service_reload(Unit *u) {
2024         Service *s = SERVICE(u);
2025
2026         assert(s);
2027
2028         assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2029
2030         service_enter_reload(s);
2031         return 0;
2032 }
2033
2034 static bool service_can_reload(Unit *u) {
2035         Service *s = SERVICE(u);
2036
2037         assert(s);
2038
2039         return !!s->exec_command[SERVICE_EXEC_RELOAD];
2040 }
2041
2042 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2043         Service *s = SERVICE(u);
2044
2045         assert(u);
2046         assert(f);
2047         assert(fds);
2048
2049         unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2050         unit_serialize_item(u, f, "failure", yes_no(s->failure));
2051
2052         if (s->control_pid > 0)
2053                 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2054
2055         if (s->main_pid_known && s->main_pid > 0)
2056                 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2057
2058         unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2059
2060         if (s->status_text)
2061                 unit_serialize_item(u, f, "status-text", s->status_text);
2062
2063         /* There's a minor uncleanliness here: if there are multiple
2064          * commands attached here, we will start from the first one
2065          * again */
2066         if (s->control_command_id >= 0)
2067                 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2068
2069         if (s->socket_fd >= 0) {
2070                 int copy;
2071
2072                 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2073                         return copy;
2074
2075                 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2076         }
2077
2078         if (s->main_exec_status.pid > 0) {
2079                 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2080
2081                 if (s->main_exec_status.start_timestamp.realtime > 0) {
2082                         unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2083                                                    "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2084
2085                         unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2086                                                    "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2087                 }
2088
2089                 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2090                         unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2091                                                    "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2092                         unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2093                                                    "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2094
2095                         unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2096                         unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2097                 }
2098         }
2099
2100         return 0;
2101 }
2102
2103 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2104         Service *s = SERVICE(u);
2105
2106         assert(u);
2107         assert(key);
2108         assert(value);
2109         assert(fds);
2110
2111         if (streq(key, "state")) {
2112                 ServiceState state;
2113
2114                 if ((state = service_state_from_string(value)) < 0)
2115                         log_debug("Failed to parse state value %s", value);
2116                 else
2117                         s->deserialized_state = state;
2118         } else if (streq(key, "failure")) {
2119                 int b;
2120
2121                 if ((b = parse_boolean(value)) < 0)
2122                         log_debug("Failed to parse failure value %s", value);
2123                 else
2124                         s->failure = b || s->failure;
2125         } else if (streq(key, "control-pid")) {
2126                 pid_t pid;
2127
2128                 if (parse_pid(value, &pid) < 0)
2129                         log_debug("Failed to parse control-pid value %s", value);
2130                 else
2131                         s->control_pid = pid;
2132         } else if (streq(key, "main-pid")) {
2133                 pid_t pid;
2134
2135                 if (parse_pid(value, &pid) < 0)
2136                         log_debug("Failed to parse main-pid value %s", value);
2137                 else
2138                         service_set_main_pid(s, (pid_t) pid);
2139         } else if (streq(key, "main-pid-known")) {
2140                 int b;
2141
2142                 if ((b = parse_boolean(value)) < 0)
2143                         log_debug("Failed to parse main-pid-known value %s", value);
2144                 else
2145                         s->main_pid_known = b;
2146         } else if (streq(key, "status-text")) {
2147                 char *t;
2148
2149                 if ((t = strdup(value))) {
2150                         free(s->status_text);
2151                         s->status_text = t;
2152                 }
2153
2154         } else if (streq(key, "control-command")) {
2155                 ServiceExecCommand id;
2156
2157                 if ((id = service_exec_command_from_string(value)) < 0)
2158                         log_debug("Failed to parse exec-command value %s", value);
2159                 else {
2160                         s->control_command_id = id;
2161                         s->control_command = s->exec_command[id];
2162                 }
2163         } else if (streq(key, "socket-fd")) {
2164                 int fd;
2165
2166                 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2167                         log_debug("Failed to parse socket-fd value %s", value);
2168                 else {
2169
2170                         if (s->socket_fd >= 0)
2171                                 close_nointr_nofail(s->socket_fd);
2172                         s->socket_fd = fdset_remove(fds, fd);
2173                 }
2174         } else if (streq(key, "main-exec-status-pid")) {
2175                 pid_t pid;
2176
2177                 if (parse_pid(value, &pid) < 0)
2178                         log_debug("Failed to parse main-exec-status-pid value %s", value);
2179                 else
2180                         s->main_exec_status.pid = pid;
2181         } else if (streq(key, "main-exec-status-code")) {
2182                 int i;
2183
2184                 if (safe_atoi(value, &i) < 0)
2185                         log_debug("Failed to parse main-exec-status-code value %s", value);
2186                 else
2187                         s->main_exec_status.code = i;
2188         } else if (streq(key, "main-exec-status-status")) {
2189                 int i;
2190
2191                 if (safe_atoi(value, &i) < 0)
2192                         log_debug("Failed to parse main-exec-status-status value %s", value);
2193                 else
2194                         s->main_exec_status.status = i;
2195         } else if (streq(key, "main-exec-status-start-realtime")) {
2196                 uint64_t k;
2197
2198                 if (safe_atou64(value, &k) < 0)
2199                         log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2200                 else
2201                         s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2202         } else if (streq(key, "main-exec-status-start-monotonic")) {
2203                 uint64_t k;
2204
2205                 if (safe_atou64(value, &k) < 0)
2206                         log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2207                 else
2208                         s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2209         } else if (streq(key, "main-exec-status-exit-realtime")) {
2210                 uint64_t k;
2211
2212                 if (safe_atou64(value, &k) < 0)
2213                         log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2214                 else
2215                         s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2216         } else if (streq(key, "main-exec-status-exit-monotonic")) {
2217                 uint64_t k;
2218
2219                 if (safe_atou64(value, &k) < 0)
2220                         log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2221                 else
2222                         s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
2223         } else
2224                 log_debug("Unknown serialization key '%s'", key);
2225
2226         return 0;
2227 }
2228
2229 static UnitActiveState service_active_state(Unit *u) {
2230         assert(u);
2231
2232         return state_translation_table[SERVICE(u)->state];
2233 }
2234
2235 static const char *service_sub_state_to_string(Unit *u) {
2236         assert(u);
2237
2238         return service_state_to_string(SERVICE(u)->state);
2239 }
2240
2241 static bool service_check_gc(Unit *u) {
2242         Service *s = SERVICE(u);
2243
2244         assert(s);
2245
2246         return !!s->sysv_path;
2247 }
2248
2249 static bool service_check_snapshot(Unit *u) {
2250         Service *s = SERVICE(u);
2251
2252         assert(s);
2253
2254         return !s->got_socket_fd;
2255 }
2256
2257 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2258         Service *s = SERVICE(u);
2259         bool success;
2260
2261         assert(s);
2262         assert(pid >= 0);
2263
2264         success = is_clean_exit(code, status);
2265
2266         if (s->main_pid == pid) {
2267
2268                 s->main_pid = 0;
2269                 exec_status_exit(&s->main_exec_status, pid, code, status);
2270
2271                 if (s->type != SERVICE_FORKING && s->control_command) {
2272                         s->control_command->exec_status = s->main_exec_status;
2273
2274                         if (s->control_command->ignore)
2275                                 success = true;
2276                 }
2277
2278                 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2279                          "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2280                 s->failure = s->failure || !success;
2281
2282                 if (s->control_command &&
2283                     s->control_command->command_next &&
2284                     success) {
2285
2286                         /* There is another command to *
2287                          * execute, so let's do that. */
2288
2289                         log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2290                         service_run_next_main(s, success);
2291
2292                 } else {
2293
2294                         /* The service exited, so the service is officially
2295                          * gone. */
2296
2297                         s->control_command = NULL;
2298                         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2299
2300                         switch (s->state) {
2301
2302                         case SERVICE_START_POST:
2303                         case SERVICE_RELOAD:
2304                         case SERVICE_STOP:
2305                                 /* Need to wait until the operation is
2306                                  * done */
2307                                 break;
2308
2309                         case SERVICE_START:
2310                                 if (s->type == SERVICE_ONESHOT) {
2311                                         /* This was our main goal, so let's go on */
2312                                         if (success)
2313                                                 service_enter_start_post(s);
2314                                         else
2315                                                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2316                                         break;
2317                                 } else {
2318                                         assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2319
2320                                         /* Fall through */
2321                                 }
2322
2323                         case SERVICE_RUNNING:
2324                                 service_enter_running(s, success);
2325                                 break;
2326
2327                         case SERVICE_STOP_SIGTERM:
2328                         case SERVICE_STOP_SIGKILL:
2329
2330                                 if (!control_pid_good(s))
2331                                         service_enter_stop_post(s, success);
2332
2333                                 /* If there is still a control process, wait for that first */
2334                                 break;
2335
2336                         default:
2337                                 assert_not_reached("Uh, main process died at wrong time.");
2338                         }
2339                 }
2340
2341         } else if (s->control_pid == pid) {
2342
2343                 s->control_pid = 0;
2344
2345                 if (s->control_command) {
2346                         exec_status_exit(&s->control_command->exec_status, pid, code, status);
2347
2348                         if (s->control_command->ignore)
2349                                 success = true;
2350                 }
2351
2352                log_full(success ? LOG_DEBUG : LOG_NOTICE,
2353                          "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2354                 s->failure = s->failure || !success;
2355
2356                 if (s->control_command &&
2357                     s->control_command->command_next &&
2358                     success) {
2359
2360                         /* There is another command to *
2361                          * execute, so let's do that. */
2362
2363                         log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2364                         service_run_next_control(s, success);
2365
2366                 } else {
2367                         /* No further commands for this step, so let's
2368                          * figure out what to do next */
2369
2370                         s->control_command = NULL;
2371                         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2372
2373                         log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2374
2375                         switch (s->state) {
2376
2377                         case SERVICE_START_PRE:
2378                                 if (success)
2379                                         service_enter_start(s);
2380                                 else
2381                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2382                                 break;
2383
2384                         case SERVICE_START:
2385                                 assert(s->type == SERVICE_FORKING);
2386
2387                                 /* Let's try to load the pid
2388                                  * file here if we can. We
2389                                  * ignore the return value,
2390                                  * since the PID file might
2391                                  * actually be created by a
2392                                  * START_POST script */
2393
2394                                 if (success) {
2395                                         if (s->pid_file)
2396                                                 service_load_pid_file(s);
2397
2398                                         service_enter_start_post(s);
2399                                 } else
2400                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2401
2402                                 break;
2403
2404                         case SERVICE_START_POST:
2405                                 if (success && s->pid_file && !s->main_pid_known) {
2406                                         int r;
2407
2408                                         /* Hmm, let's see if we can
2409                                          * load the pid now after the
2410                                          * start-post scripts got
2411                                          * executed. */
2412
2413                                         if ((r = service_load_pid_file(s)) < 0)
2414                                                 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2415                                 }
2416
2417                                 /* Fall through */
2418
2419                         case SERVICE_RELOAD:
2420                                 if (success)
2421                                         service_enter_running(s, true);
2422                                 else
2423                                         service_enter_stop(s, false);
2424
2425                                 break;
2426
2427                         case SERVICE_STOP:
2428                                 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2429                                 break;
2430
2431                         case SERVICE_STOP_SIGTERM:
2432                         case SERVICE_STOP_SIGKILL:
2433                                 if (main_pid_good(s) <= 0)
2434                                         service_enter_stop_post(s, success);
2435
2436                                 /* If there is still a service
2437                                  * process around, wait until
2438                                  * that one quit, too */
2439                                 break;
2440
2441                         case SERVICE_STOP_POST:
2442                         case SERVICE_FINAL_SIGTERM:
2443                         case SERVICE_FINAL_SIGKILL:
2444                                 service_enter_dead(s, success, true);
2445                                 break;
2446
2447                         default:
2448                                 assert_not_reached("Uh, control process died at wrong time.");
2449                         }
2450                 }
2451         }
2452 }
2453
2454 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2455         Service *s = SERVICE(u);
2456
2457         assert(s);
2458         assert(elapsed == 1);
2459
2460         assert(w == &s->timer_watch);
2461
2462         switch (s->state) {
2463
2464         case SERVICE_START_PRE:
2465         case SERVICE_START:
2466                 log_warning("%s operation timed out. Terminating.", u->meta.id);
2467                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2468                 break;
2469
2470         case SERVICE_START_POST:
2471         case SERVICE_RELOAD:
2472                 log_warning("%s operation timed out. Stopping.", u->meta.id);
2473                 service_enter_stop(s, false);
2474                 break;
2475
2476         case SERVICE_STOP:
2477                 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2478                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2479                 break;
2480
2481         case SERVICE_STOP_SIGTERM:
2482                 log_warning("%s stopping timed out. Killing.", u->meta.id);
2483                 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2484                 break;
2485
2486         case SERVICE_STOP_SIGKILL:
2487                 /* Uh, wie sent a SIGKILL and it is still not gone?
2488                  * Must be something we cannot kill, so let's just be
2489                  * weirded out and continue */
2490
2491                 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2492                 service_enter_stop_post(s, false);
2493                 break;
2494
2495         case SERVICE_STOP_POST:
2496                 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2497                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2498                 break;
2499
2500         case SERVICE_FINAL_SIGTERM:
2501                 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2502                 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2503                 break;
2504
2505         case SERVICE_FINAL_SIGKILL:
2506                 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
2507                 service_enter_dead(s, false, true);
2508                 break;
2509
2510         case SERVICE_AUTO_RESTART:
2511                 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2512                 service_enter_restart(s);
2513                 break;
2514
2515         default:
2516                 assert_not_reached("Timeout at wrong time.");
2517         }
2518 }
2519
2520 static void service_cgroup_notify_event(Unit *u) {
2521         Service *s = SERVICE(u);
2522
2523         assert(u);
2524
2525         log_debug("%s: cgroup is empty", u->meta.id);
2526
2527         switch (s->state) {
2528
2529                 /* Waiting for SIGCHLD is usually more interesting,
2530                  * because it includes return codes/signals. Which is
2531                  * why we ignore the cgroup events for most cases,
2532                  * except when we don't know pid which to expect the
2533                  * SIGCHLD for. */
2534
2535         case SERVICE_RUNNING:
2536                 service_enter_running(s, true);
2537                 break;
2538
2539         default:
2540                 ;
2541         }
2542 }
2543
2544 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2545         Service *s = SERVICE(u);
2546         const char *e;
2547
2548         assert(u);
2549
2550         if (s->notify_access == NOTIFY_NONE) {
2551                 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2552                             u->meta.id, (unsigned long) pid);
2553                 return;
2554         }
2555
2556         if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2557                 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2558                             u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2559                 return;
2560         }
2561
2562         log_debug("%s: Got message", u->meta.id);
2563
2564         /* Interpret MAINPID= */
2565         if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2566             (s->state == SERVICE_START ||
2567              s->state == SERVICE_START_POST ||
2568              s->state == SERVICE_RUNNING ||
2569              s->state == SERVICE_RELOAD)) {
2570
2571                 if (parse_pid(e + 8, &pid) < 0)
2572                         log_warning("Failed to parse notification message %s", e);
2573                 else {
2574                         log_debug("%s: got %s", u->meta.id, e);
2575                         service_set_main_pid(s, pid);
2576                 }
2577         }
2578
2579         /* Interpret READY= */
2580         if (s->type == SERVICE_NOTIFY &&
2581             s->state == SERVICE_START &&
2582             strv_find(tags, "READY=1")) {
2583                 log_debug("%s: got READY=1", u->meta.id);
2584
2585                 service_enter_start_post(s);
2586         }
2587
2588         /* Interpret STATUS= */
2589         if ((e = strv_find_prefix(tags, "STATUS="))) {
2590                 char *t;
2591
2592                 if (e[7]) {
2593                         if (!(t = strdup(e+7))) {
2594                                 log_error("Failed to allocate string.");
2595                                 return;
2596                         }
2597
2598                         log_debug("%s: got %s", u->meta.id, e);
2599
2600                         free(s->status_text);
2601                         s->status_text = t;
2602                 } else {
2603                         free(s->status_text);
2604                         s->status_text = NULL;
2605                 }
2606
2607         }
2608 }
2609
2610 static int service_enumerate(Manager *m) {
2611         char **p;
2612         unsigned i;
2613         DIR *d = NULL;
2614         char *path = NULL, *fpath = NULL, *name = NULL;
2615         int r;
2616
2617         assert(m);
2618
2619         STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2620                 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2621                         struct dirent *de;
2622
2623                         free(path);
2624                         path = NULL;
2625                         if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2626                                 r = -ENOMEM;
2627                                 goto finish;
2628                         }
2629
2630                         if (d)
2631                                 closedir(d);
2632
2633                         if (!(d = opendir(path))) {
2634                                 if (errno != ENOENT)
2635                                         log_warning("opendir() failed on %s: %s", path, strerror(errno));
2636
2637                                 continue;
2638                         }
2639
2640                         while ((de = readdir(d))) {
2641                                 Unit *service;
2642                                 int a, b;
2643
2644                                 if (ignore_file(de->d_name))
2645                                         continue;
2646
2647                                 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2648                                         continue;
2649
2650                                 if (strlen(de->d_name) < 4)
2651                                         continue;
2652
2653                                 a = undecchar(de->d_name[1]);
2654                                 b = undecchar(de->d_name[2]);
2655
2656                                 if (a < 0 || b < 0)
2657                                         continue;
2658
2659                                 free(fpath);
2660                                 fpath = NULL;
2661                                 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2662                                         r = -ENOMEM;
2663                                         goto finish;
2664                                 }
2665
2666                                 if (access(fpath, X_OK) < 0) {
2667
2668                                         if (errno != ENOENT)
2669                                                 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2670
2671                                         continue;
2672                                 }
2673
2674                                 free(name);
2675                                 if (!(name = sysv_translate_name(de->d_name + 3))) {
2676                                         r = -ENOMEM;
2677                                         goto finish;
2678                                 }
2679
2680                                 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2681                                         log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2682                                         continue;
2683                                 }
2684
2685                                 if (de->d_name[0] == 'S' &&
2686                                     (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2687                                         SERVICE(service)->sysv_start_priority =
2688                                                 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2689                                         SERVICE(service)->sysv_enabled = true;
2690                                 }
2691
2692                                 manager_dispatch_load_queue(m);
2693                                 service = unit_follow_merge(service);
2694
2695                                 /* If this is a native service, rely
2696                                  * on native ways to pull in a
2697                                  * service, don't pull it in via sysv
2698                                  * rcN.d links. */
2699                                 if (service->meta.fragment_path)
2700                                         continue;
2701
2702                                 if (de->d_name[0] == 'S') {
2703
2704                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2705                                                 goto finish;
2706
2707                                 } else if (de->d_name[0] == 'K' &&
2708                                            (rcnd_table[i].type == RUNLEVEL_DOWN ||
2709                                             rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2710
2711                                         /* We honour K links only for
2712                                          * halt/reboot. For the normal
2713                                          * runlevels we assume the
2714                                          * stop jobs will be
2715                                          * implicitly added by the
2716                                          * core logic. Also, we don't
2717                                          * really distuingish here
2718                                          * between the runlevels 0 and
2719                                          * 6 and just add them to the
2720                                          * special shutdown target. On
2721                                          * SUSE the boot.d/ runlevel
2722                                          * is also used for shutdown,
2723                                          * so we add links for that
2724                                          * too to the shutdown
2725                                          * target.*/
2726
2727                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2728                                                 goto finish;
2729                                 }
2730                         }
2731                 }
2732
2733         r = 0;
2734
2735 finish:
2736         free(path);
2737         free(fpath);
2738         free(name);
2739
2740         if (d)
2741                 closedir(d);
2742
2743         return r;
2744 }
2745
2746 static void service_bus_name_owner_change(
2747                 Unit *u,
2748                 const char *name,
2749                 const char *old_owner,
2750                 const char *new_owner) {
2751
2752         Service *s = SERVICE(u);
2753
2754         assert(s);
2755         assert(name);
2756
2757         assert(streq(s->bus_name, name));
2758         assert(old_owner || new_owner);
2759
2760         if (old_owner && new_owner)
2761                 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2762         else if (old_owner)
2763                 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2764         else
2765                 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2766
2767         s->bus_name_good = !!new_owner;
2768
2769         if (s->type == SERVICE_DBUS) {
2770
2771                 /* service_enter_running() will figure out what to
2772                  * do */
2773                 if (s->state == SERVICE_RUNNING)
2774                         service_enter_running(s, true);
2775                 else if (s->state == SERVICE_START && new_owner)
2776                         service_enter_start_post(s);
2777
2778         } else if (new_owner &&
2779                    s->main_pid <= 0 &&
2780                    (s->state == SERVICE_START ||
2781                     s->state == SERVICE_START_POST ||
2782                     s->state == SERVICE_RUNNING ||
2783                     s->state == SERVICE_RELOAD)) {
2784
2785                 /* Try to acquire PID from bus service */
2786                 log_debug("Trying to acquire PID from D-Bus name...");
2787
2788                 bus_query_pid(u->meta.manager, name);
2789         }
2790 }
2791
2792 static void service_bus_query_pid_done(
2793                 Unit *u,
2794                 const char *name,
2795                 pid_t pid) {
2796
2797         Service *s = SERVICE(u);
2798
2799         assert(s);
2800         assert(name);
2801
2802         log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2803
2804         if (s->main_pid <= 0 &&
2805             (s->state == SERVICE_START ||
2806              s->state == SERVICE_START_POST ||
2807              s->state == SERVICE_RUNNING ||
2808              s->state == SERVICE_RELOAD))
2809                 service_set_main_pid(s, pid);
2810 }
2811
2812 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
2813         assert(s);
2814         assert(fd >= 0);
2815
2816         /* This is called by the socket code when instantiating a new
2817          * service for a stream socket and the socket needs to be
2818          * configured. */
2819
2820         if (s->meta.load_state != UNIT_LOADED)
2821                 return -EINVAL;
2822
2823         if (s->socket_fd >= 0)
2824                 return -EBUSY;
2825
2826         if (s->state != SERVICE_DEAD)
2827                 return -EAGAIN;
2828
2829         s->socket_fd = fd;
2830         s->got_socket_fd = true;
2831         s->socket = sock;
2832
2833         return 0;
2834 }
2835
2836 static void service_reset_maintenance(Unit *u) {
2837         Service *s = SERVICE(u);
2838
2839         assert(s);
2840
2841         if (s->state == SERVICE_MAINTENANCE)
2842                 service_set_state(s, SERVICE_DEAD);
2843
2844         s->failure = false;
2845 }
2846
2847 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2848         [SERVICE_DEAD] = "dead",
2849         [SERVICE_START_PRE] = "start-pre",
2850         [SERVICE_START] = "start",
2851         [SERVICE_START_POST] = "start-post",
2852         [SERVICE_RUNNING] = "running",
2853         [SERVICE_EXITED] = "exited",
2854         [SERVICE_RELOAD] = "reload",
2855         [SERVICE_STOP] = "stop",
2856         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2857         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2858         [SERVICE_STOP_POST] = "stop-post",
2859         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2860         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2861         [SERVICE_MAINTENANCE] = "maintenance",
2862         [SERVICE_AUTO_RESTART] = "auto-restart",
2863 };
2864
2865 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2866
2867 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2868         [SERVICE_ONCE] = "once",
2869         [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2870         [SERVICE_RESTART_ALWAYS] = "restart-always",
2871 };
2872
2873 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2874
2875 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2876         [SERVICE_SIMPLE] = "simple",
2877         [SERVICE_FORKING] = "forking",
2878         [SERVICE_ONESHOT] = "oneshot",
2879         [SERVICE_DBUS] = "dbus",
2880         [SERVICE_NOTIFY] = "notify"
2881 };
2882
2883 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2884
2885 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2886         [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2887         [SERVICE_EXEC_START] = "ExecStart",
2888         [SERVICE_EXEC_START_POST] = "ExecStartPost",
2889         [SERVICE_EXEC_RELOAD] = "ExecReload",
2890         [SERVICE_EXEC_STOP] = "ExecStop",
2891         [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2892 };
2893
2894 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2895
2896 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2897         [NOTIFY_NONE] = "none",
2898         [NOTIFY_MAIN] = "main",
2899         [NOTIFY_ALL] = "all"
2900 };
2901
2902 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2903
2904 const UnitVTable service_vtable = {
2905         .suffix = ".service",
2906         .show_status = true,
2907
2908         .init = service_init,
2909         .done = service_done,
2910         .load = service_load,
2911
2912         .coldplug = service_coldplug,
2913
2914         .dump = service_dump,
2915
2916         .start = service_start,
2917         .stop = service_stop,
2918         .reload = service_reload,
2919
2920         .can_reload = service_can_reload,
2921
2922         .serialize = service_serialize,
2923         .deserialize_item = service_deserialize_item,
2924
2925         .active_state = service_active_state,
2926         .sub_state_to_string = service_sub_state_to_string,
2927
2928         .check_gc = service_check_gc,
2929         .check_snapshot = service_check_snapshot,
2930
2931         .sigchld_event = service_sigchld_event,
2932         .timer_event = service_timer_event,
2933
2934         .reset_maintenance = service_reset_maintenance,
2935
2936         .cgroup_notify_empty = service_cgroup_notify_event,
2937         .notify_message = service_notify_message,
2938
2939         .bus_name_owner_change = service_bus_name_owner_change,
2940         .bus_query_pid_done = service_bus_query_pid_done,
2941
2942         .bus_message_handler = bus_service_message_handler,
2943
2944         .enumerate = service_enumerate
2945 };