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_start_priority >= 0)
 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 = EXEC_OUTPUT_TTY;
 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->exec_command[SERVICE_EXEC_START]->command_next) {
 838                 log_error("%s has more than one ExecStart setting. Refusing.", s->meta.id);
 839                 return -EINVAL;
 840         }
 841
 842         if (s->type == SERVICE_DBUS && !s->bus_name) {
 843                 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
 844                 return -EINVAL;
 845         }
 846
 847         if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
 848                 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
 849                 return -EINVAL;
 850         }
 851
 852         return 0;
 853 }
 854
 855 static int service_add_default_dependencies(Service *s) {
 856         int r;
 857
 858         assert(s);
 859
 860         /* Add a number of automatic dependencies useful for the
 861          * majority of services. */
 862
 863         /* First, pull in base system */
 864         if (s->meta.manager->running_as == MANAGER_SYSTEM) {
 865
 866                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
 867                         return r;
 868
 869         } else if (s->meta.manager->running_as == MANAGER_SESSION) {
 870
 871                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
 872                         return r;
 873         }
 874
 875         /* Second, activate normal shutdown */
 876         return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
 877 }
 878
 879 static int service_load(Unit *u) {
 880         int r;
 881         Service *s = SERVICE(u);
 882
 883         assert(s);
 884
 885         /* Load a .service file */
 886         if ((r = unit_load_fragment(u)) < 0)
 887                 return r;
 888
 889         /* Load a classic init script as a fallback, if we couldn't find anything */
 890         if (u->meta.load_state == UNIT_STUB)
 891                 if ((r = service_load_sysv(s)) < 0)
 892                         return r;
 893
 894         /* Still nothing found? Then let's give up */
 895         if (u->meta.load_state == UNIT_STUB)
 896                 return -ENOENT;
 897
 898         /* We were able to load something, then let's add in the
 899          * dropin directories. */
 900         if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
 901                 return r;
 902
 903         /* This is a new unit? Then let's add in some extras */
 904         if (u->meta.load_state == UNIT_LOADED) {
 905                 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
 906                         return r;
 907
 908                 if ((r = unit_add_default_cgroup(u)) < 0)
 909                         return r;
 910
 911                 if ((r = sysv_fix_order(s)) < 0)
 912                         return r;
 913
 914                 if (s->bus_name) {
 915                         if ((r = service_add_bus_name(s)) < 0)
 916                                 return r;
 917
 918                         if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
 919                                 return r;
 920                 }
 921
 922                 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
 923                         s->notify_access = NOTIFY_MAIN;
 924
 925                 if (s->type == SERVICE_DBUS || s->bus_name)
 926                         if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
 927                                 return r;
 928
 929                 if (s->meta.default_dependencies)
 930                         if ((r = service_add_default_dependencies(s)) < 0)
 931                                 return r;
 932         }
 933
 934         return service_verify(s);
 935 }
 936
 937 static void service_dump(Unit *u, FILE *f, const char *prefix) {
 938
 939         ServiceExecCommand c;
 940         Service *s = SERVICE(u);
 941         const char *prefix2;
 942         char *p2;
 943
 944         assert(s);
 945
 946         p2 = strappend(prefix, "\t");
 947         prefix2 = p2 ? p2 : prefix;
 948
 949         fprintf(f,
 950                 "%sService State: %s\n"
 951                 "%sPermissionsStartOnly: %s\n"
 952                 "%sRootDirectoryStartOnly: %s\n"
 953                 "%sValidNoProcess: %s\n"
 954                 "%sType: %s\n"
 955                 "%sRestart: %s\n"
 956                 "%sNotifyAccess: %s\n",
 957                 prefix, service_state_to_string(s->state),
 958                 prefix, yes_no(s->permissions_start_only),
 959                 prefix, yes_no(s->root_directory_start_only),
 960                 prefix, yes_no(s->valid_no_process),
 961                 prefix, service_type_to_string(s->type),
 962                 prefix, service_restart_to_string(s->restart),
 963                 prefix, notify_access_to_string(s->notify_access));
 964
 965         if (s->control_pid > 0)
 966                 fprintf(f,
 967                         "%sControl PID: %lu\n",
 968                         prefix, (unsigned long) s->control_pid);
 969
 970         if (s->main_pid > 0)
 971                 fprintf(f,
 972                         "%sMain PID: %lu\n",
 973                         prefix, (unsigned long) s->main_pid);
 974
 975         if (s->pid_file)
 976                 fprintf(f,
 977                         "%sPIDFile: %s\n",
 978                         prefix, s->pid_file);
 979
 980         if (s->bus_name)
 981                 fprintf(f,
 982                         "%sBusName: %s\n"
 983                         "%sBus Name Good: %s\n",
 984                         prefix, s->bus_name,
 985                         prefix, yes_no(s->bus_name_good));
 986
 987         exec_context_dump(&s->exec_context, f, prefix);
 988
 989         for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
 990
 991                 if (!s->exec_command[c])
 992                         continue;
 993
 994                 fprintf(f, "%s-> %s:\n",
 995                         prefix, service_exec_command_to_string(c));
 996
 997                 exec_command_dump_list(s->exec_command[c], f, prefix2);
 998         }
 999
1000         if (s->sysv_path)
1001                 fprintf(f,
1002                         "%sSysV Init Script Path: %s\n"
1003                         "%sSysV Init Script has LSB Header: %s\n",
1004                         prefix, s->sysv_path,
1005                         prefix, yes_no(s->sysv_has_lsb));
1006
1007         if (s->sysv_start_priority >= 0)
1008                 fprintf(f,
1009                         "%sSysVStartPriority: %i\n",
1010                         prefix, s->sysv_start_priority);
1011
1012         if (s->sysv_runlevels)
1013                 fprintf(f, "%sSysVRunLevels: %s\n",
1014                         prefix, s->sysv_runlevels);
1015
1016         if (s->status_text)
1017                 fprintf(f, "%sStatus Text: %s\n",
1018                         prefix, s->status_text);
1019
1020         free(p2);
1021 }
1022
1023 static int service_load_pid_file(Service *s) {
1024         char *k;
1025         int r;
1026         pid_t pid;
1027
1028         assert(s);
1029
1030         if (s->main_pid_known)
1031                 return 0;
1032
1033         assert(s->main_pid <= 0);
1034
1035         if (!s->pid_file)
1036                 return -ENOENT;
1037
1038         if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1039                 return r;
1040
1041         r = parse_pid(k, &pid);
1042         free(k);
1043
1044         if (r < 0)
1045                 return r;
1046
1047         if (kill(pid, 0) < 0 && errno != EPERM) {
1048                 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1049                             (unsigned long) pid, s->pid_file);
1050                 return -ESRCH;
1051         }
1052
1053         if ((r = service_set_main_pid(s, pid)) < 0)
1054                 return r;
1055
1056         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1057                 /* FIXME: we need to do something here */
1058                 return r;
1059
1060         return 0;
1061 }
1062
1063 static int service_get_sockets(Service *s, Set **_set) {
1064         Set *set;
1065         Iterator i;
1066         char *t;
1067         int r;
1068
1069         assert(s);
1070         assert(_set);
1071
1072         if (s->socket_fd >= 0)
1073                 return 0;
1074
1075         /* Collects all Socket objects that belong to this
1076          * service. Note that a service might have multiple sockets
1077          * via multiple names. */
1078
1079         if (!(set = set_new(NULL, NULL)))
1080                 return -ENOMEM;
1081
1082         SET_FOREACH(t, s->meta.names, i) {
1083                 char *k;
1084                 Unit *p;
1085
1086                 /* Look for all socket objects that go by any of our
1087                  * units and collect their fds */
1088
1089                 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1090                         r = -ENOMEM;
1091                         goto fail;
1092                 }
1093
1094                 p = manager_get_unit(s->meta.manager, k);
1095                 free(k);
1096
1097                 if (!p)
1098                         continue;
1099
1100                 if ((r = set_put(set, p)) < 0)
1101                         goto fail;
1102         }
1103
1104         *_set = set;
1105         return 0;
1106
1107 fail:
1108         set_free(set);
1109         return r;
1110 }
1111
1112 static int service_notify_sockets_dead(Service *s) {
1113         Iterator i;
1114         Set *set;
1115         Socket *sock;
1116         int r;
1117
1118         assert(s);
1119
1120         if (s->socket_fd >= 0)
1121                 return 0;
1122
1123         /* Notifies all our sockets when we die */
1124         if ((r = service_get_sockets(s, &set)) < 0)
1125                 return r;
1126
1127         SET_FOREACH(sock, set, i)
1128                 socket_notify_service_dead(sock);
1129
1130         set_free(set);
1131
1132         return 0;
1133 }
1134
1135 static void service_set_state(Service *s, ServiceState state) {
1136         ServiceState old_state;
1137         assert(s);
1138
1139         old_state = s->state;
1140         s->state = state;
1141
1142         if (state != SERVICE_START_PRE &&
1143             state != SERVICE_START &&
1144             state != SERVICE_START_POST &&
1145             state != SERVICE_RELOAD &&
1146             state != SERVICE_STOP &&
1147             state != SERVICE_STOP_SIGTERM &&
1148             state != SERVICE_STOP_SIGKILL &&
1149             state != SERVICE_STOP_POST &&
1150             state != SERVICE_FINAL_SIGTERM &&
1151             state != SERVICE_FINAL_SIGKILL &&
1152             state != SERVICE_AUTO_RESTART)
1153                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1154
1155         if (state != SERVICE_START &&
1156             state != SERVICE_START_POST &&
1157             state != SERVICE_RUNNING &&
1158             state != SERVICE_RELOAD &&
1159             state != SERVICE_STOP &&
1160             state != SERVICE_STOP_SIGTERM &&
1161             state != SERVICE_STOP_SIGKILL)
1162                 service_unwatch_main_pid(s);
1163
1164         if (state != SERVICE_START_PRE &&
1165             state != SERVICE_START &&
1166             state != SERVICE_START_POST &&
1167             state != SERVICE_RELOAD &&
1168             state != SERVICE_STOP &&
1169             state != SERVICE_STOP_SIGTERM &&
1170             state != SERVICE_STOP_SIGKILL &&
1171             state != SERVICE_STOP_POST &&
1172             state != SERVICE_FINAL_SIGTERM &&
1173             state != SERVICE_FINAL_SIGKILL) {
1174                 service_unwatch_control_pid(s);
1175                 s->control_command = NULL;
1176                 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1177         }
1178
1179         if (state == SERVICE_DEAD ||
1180             state == SERVICE_STOP ||
1181             state == SERVICE_STOP_SIGTERM ||
1182             state == SERVICE_STOP_SIGKILL ||
1183             state == SERVICE_STOP_POST ||
1184             state == SERVICE_FINAL_SIGTERM ||
1185             state == SERVICE_FINAL_SIGKILL ||
1186             state == SERVICE_MAINTENANCE ||
1187             state == SERVICE_AUTO_RESTART)
1188                 service_notify_sockets_dead(s);
1189
1190         if (state != SERVICE_START_PRE &&
1191             state != SERVICE_START &&
1192             state != SERVICE_START_POST &&
1193             state != SERVICE_RUNNING &&
1194             state != SERVICE_RELOAD &&
1195             state != SERVICE_STOP &&
1196             state != SERVICE_STOP_SIGTERM &&
1197             state != SERVICE_STOP_SIGKILL &&
1198             state != SERVICE_STOP_POST &&
1199             state != SERVICE_FINAL_SIGTERM &&
1200             state != SERVICE_FINAL_SIGKILL &&
1201             !(state == SERVICE_DEAD && s->meta.job)) {
1202                 service_close_socket_fd(s);
1203                 service_connection_unref(s);
1204         }
1205
1206         /* For the inactive states unit_notify() will trim the cgroup,
1207          * but for exit we have to do that ourselves... */
1208         if (state == SERVICE_EXITED)
1209                 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1210
1211         if (old_state != state)
1212                 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1213
1214         unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1215 }
1216
1217 static int service_coldplug(Unit *u) {
1218         Service *s = SERVICE(u);
1219         int r;
1220
1221         assert(s);
1222         assert(s->state == SERVICE_DEAD);
1223
1224         if (s->deserialized_state != s->state) {
1225
1226                 if (s->deserialized_state == SERVICE_START_PRE ||
1227                     s->deserialized_state == SERVICE_START ||
1228                     s->deserialized_state == SERVICE_START_POST ||
1229                     s->deserialized_state == SERVICE_RELOAD ||
1230                     s->deserialized_state == SERVICE_STOP ||
1231                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1232                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1233                     s->deserialized_state == SERVICE_STOP_POST ||
1234                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1235                     s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1236                     s->deserialized_state == SERVICE_AUTO_RESTART) {
1237
1238                         if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1239                                 usec_t k;
1240
1241                                 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1242
1243                                 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1244                                         return r;
1245                         }
1246                 }
1247
1248                 if ((s->deserialized_state == SERVICE_START &&
1249                      (s->type == SERVICE_FORKING ||
1250                       s->type == SERVICE_DBUS ||
1251                       s->type == SERVICE_FINISH ||
1252                       s->type == SERVICE_NOTIFY)) ||
1253                     s->deserialized_state == SERVICE_START_POST ||
1254                     s->deserialized_state == SERVICE_RUNNING ||
1255                     s->deserialized_state == SERVICE_RELOAD ||
1256                     s->deserialized_state == SERVICE_STOP ||
1257                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1258                     s->deserialized_state == SERVICE_STOP_SIGKILL)
1259                         if (s->main_pid > 0)
1260                                 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1261                                         return r;
1262
1263                 if (s->deserialized_state == SERVICE_START_PRE ||
1264                     s->deserialized_state == SERVICE_START ||
1265                     s->deserialized_state == SERVICE_START_POST ||
1266                     s->deserialized_state == SERVICE_RELOAD ||
1267                     s->deserialized_state == SERVICE_STOP ||
1268                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1269                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1270                     s->deserialized_state == SERVICE_STOP_POST ||
1271                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1272                     s->deserialized_state == SERVICE_FINAL_SIGKILL)
1273                         if (s->control_pid > 0)
1274                                 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1275                                         return r;
1276
1277                 service_set_state(s, s->deserialized_state);
1278         }
1279
1280         return 0;
1281 }
1282
1283 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1284         Iterator i;
1285         int r;
1286         int *rfds = NULL;
1287         unsigned rn_fds = 0;
1288         Set *set;
1289         Socket *sock;
1290
1291         assert(s);
1292         assert(fds);
1293         assert(n_fds);
1294
1295         if (s->socket_fd >= 0)
1296                 return 0;
1297
1298         if ((r = service_get_sockets(s, &set)) < 0)
1299                 return r;
1300
1301         SET_FOREACH(sock, set, i) {
1302                 int *cfds;
1303                 unsigned cn_fds;
1304
1305                 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1306                         goto fail;
1307
1308                 if (!cfds)
1309                         continue;
1310
1311                 if (!rfds) {
1312                         rfds = cfds;
1313                         rn_fds = cn_fds;
1314                 } else {
1315                         int *t;
1316
1317                         if (!(t = new(int, rn_fds+cn_fds))) {
1318                                 free(cfds);
1319                                 r = -ENOMEM;
1320                                 goto fail;
1321                         }
1322
1323                         memcpy(t, rfds, rn_fds);
1324                         memcpy(t+rn_fds, cfds, cn_fds);
1325                         free(rfds);
1326                         free(cfds);
1327
1328                         rfds = t;
1329                         rn_fds = rn_fds+cn_fds;
1330                 }
1331         }
1332
1333         *fds = rfds;
1334         *n_fds = rn_fds;
1335
1336         set_free(set);
1337
1338         return 0;
1339
1340 fail:
1341         set_free(set);
1342         free(rfds);
1343
1344         return r;
1345 }
1346
1347 static int service_spawn(
1348                 Service *s,
1349                 ExecCommand *c,
1350                 bool timeout,
1351                 bool pass_fds,
1352                 bool apply_permissions,
1353                 bool apply_chroot,
1354                 bool apply_tty_stdin,
1355                 bool set_notify_socket,
1356                 pid_t *_pid) {
1357
1358         pid_t pid;
1359         int r;
1360         int *fds = NULL, *fdsbuf = NULL;
1361         unsigned n_fds = 0, n_env = 0;
1362         char **argv = NULL, **final_env = NULL, **our_env = NULL;
1363
1364         assert(s);
1365         assert(c);
1366         assert(_pid);
1367
1368         if (pass_fds ||
1369             s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1370             s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1371             s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1372
1373                 if (s->socket_fd >= 0) {
1374                         fds = &s->socket_fd;
1375                         n_fds = 1;
1376                 } else {
1377                         if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1378                                 goto fail;
1379
1380                         fds = fdsbuf;
1381                 }
1382         }
1383
1384         if (timeout && s->timeout_usec) {
1385                 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1386                         goto fail;
1387         } else
1388                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1389
1390         if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1391                 r = -ENOMEM;
1392                 goto fail;
1393         }
1394
1395         if (!(our_env = new0(char*, 3))) {
1396                 r = -ENOMEM;
1397                 goto fail;
1398         }
1399
1400         if (set_notify_socket)
1401                 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1402                         r = -ENOMEM;
1403                         goto fail;
1404                 }
1405
1406         if (s->main_pid > 0)
1407                 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1408                         r = -ENOMEM;
1409                         goto fail;
1410                 }
1411
1412         if (!(final_env = strv_env_merge(2,
1413                                          s->meta.manager->environment,
1414                                          our_env,
1415                                          NULL))) {
1416                 r = -ENOMEM;
1417                 goto fail;
1418         }
1419
1420         r = exec_spawn(c,
1421                        argv,
1422                        &s->exec_context,
1423                        fds, n_fds,
1424                        final_env,
1425                        apply_permissions,
1426                        apply_chroot,
1427                        apply_tty_stdin,
1428                        s->meta.manager->confirm_spawn,
1429                        s->meta.cgroup_bondings,
1430                        &pid);
1431
1432         if (r < 0)
1433                 goto fail;
1434
1435
1436         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1437                 /* FIXME: we need to do something here */
1438                 goto fail;
1439
1440         free(fdsbuf);
1441         strv_free(argv);
1442         strv_free(our_env);
1443         strv_free(final_env);
1444
1445         *_pid = pid;
1446
1447         return 0;
1448
1449 fail:
1450         free(fdsbuf);
1451         strv_free(argv);
1452         strv_free(our_env);
1453         strv_free(final_env);
1454
1455         if (timeout)
1456                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1457
1458         return r;
1459 }
1460
1461 static int main_pid_good(Service *s) {
1462         assert(s);
1463
1464         /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1465          * don't know */
1466
1467         /* If we know the pid file, then lets just check if it is
1468          * still valid */
1469         if (s->main_pid_known)
1470                 return s->main_pid > 0;
1471
1472         /* We don't know the pid */
1473         return -EAGAIN;
1474 }
1475
1476 static int control_pid_good(Service *s) {
1477         assert(s);
1478
1479         return s->control_pid > 0;
1480 }
1481
1482 static int cgroup_good(Service *s) {
1483         int r;
1484
1485         assert(s);
1486
1487         if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1488                 return r;
1489
1490         return !r;
1491 }
1492
1493 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1494         int r;
1495         assert(s);
1496
1497         if (!success)
1498                 s->failure = true;
1499
1500         if (allow_restart &&
1501             s->allow_restart &&
1502             (s->restart == SERVICE_RESTART_ALWAYS ||
1503              (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1504
1505                 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1506                         goto fail;
1507
1508                 service_set_state(s, SERVICE_AUTO_RESTART);
1509         } else
1510                 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
1511
1512         return;
1513
1514 fail:
1515         log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1516         service_enter_dead(s, false, false);
1517 }
1518
1519 static void service_enter_signal(Service *s, ServiceState state, bool success);
1520
1521 static void service_enter_stop_post(Service *s, bool success) {
1522         int r;
1523         assert(s);
1524
1525         if (!success)
1526                 s->failure = true;
1527
1528         service_unwatch_control_pid(s);
1529
1530         s->control_command_id = SERVICE_EXEC_STOP_POST;
1531         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1532                 if ((r = service_spawn(s,
1533                                        s->control_command,
1534                                        true,
1535                                        false,
1536                                        !s->permissions_start_only,
1537                                        !s->root_directory_start_only,
1538                                        true,
1539                                        false,
1540                                        &s->control_pid)) < 0)
1541                         goto fail;
1542
1543
1544                 service_set_state(s, SERVICE_STOP_POST);
1545         } else
1546                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1547
1548         return;
1549
1550 fail:
1551         log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1552         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1553 }
1554
1555 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1556         int r;
1557         bool sent = false;
1558
1559         assert(s);
1560
1561         if (!success)
1562                 s->failure = true;
1563
1564         if (s->exec_context.kill_mode != KILL_NONE) {
1565                 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1566
1567                 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1568
1569                         if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
1570                                 if (r != -EAGAIN && r != -ESRCH)
1571                                         goto fail;
1572                         } else
1573                                 sent = true;
1574                 }
1575
1576                 if (!sent) {
1577                         r = 0;
1578
1579                         if (s->main_pid > 0) {
1580                                 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1581                                         r = -errno;
1582                                 else
1583                                         sent = true;
1584                         }
1585
1586                         if (s->control_pid > 0) {
1587                                 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1588                                         r = -errno;
1589                                 else
1590                                         sent = true;
1591                         }
1592
1593                         if (r < 0)
1594                                 goto fail;
1595                 }
1596         }
1597
1598         if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1599                 if (s->timeout_usec > 0)
1600                         if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1601                                 goto fail;
1602
1603                 service_set_state(s, state);
1604         } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1605                 service_enter_stop_post(s, true);
1606         else
1607                 service_enter_dead(s, true, true);
1608
1609         return;
1610
1611 fail:
1612         log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1613
1614         if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1615                 service_enter_stop_post(s, false);
1616         else
1617                 service_enter_dead(s, false, true);
1618 }
1619
1620 static void service_enter_stop(Service *s, bool success) {
1621         int r;
1622
1623         assert(s);
1624
1625         if (!success)
1626                 s->failure = true;
1627
1628         service_unwatch_control_pid(s);
1629
1630         s->control_command_id = SERVICE_EXEC_STOP;
1631         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1632                 if ((r = service_spawn(s,
1633                                        s->control_command,
1634                                        true,
1635                                        false,
1636                                        !s->permissions_start_only,
1637                                        !s->root_directory_start_only,
1638                                        false,
1639                                        false,
1640                                        &s->control_pid)) < 0)
1641                         goto fail;
1642
1643                 service_set_state(s, SERVICE_STOP);
1644         } else
1645                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1646
1647         return;
1648
1649 fail:
1650         log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1651         service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1652 }
1653
1654 static void service_enter_running(Service *s, bool success) {
1655         int main_pid_ok, cgroup_ok;
1656         assert(s);
1657
1658         if (!success)
1659                 s->failure = true;
1660
1661         main_pid_ok = main_pid_good(s);
1662         cgroup_ok = cgroup_good(s);
1663
1664         if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1665             (s->bus_name_good || s->type != SERVICE_DBUS))
1666                 service_set_state(s, SERVICE_RUNNING);
1667         else if (s->valid_no_process)
1668                 service_set_state(s, SERVICE_EXITED);
1669         else
1670                 service_enter_stop(s, true);
1671 }
1672
1673 static void service_enter_start_post(Service *s) {
1674         int r;
1675         assert(s);
1676
1677         service_unwatch_control_pid(s);
1678
1679         s->control_command_id = SERVICE_EXEC_START_POST;
1680         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1681                 if ((r = service_spawn(s,
1682                                        s->control_command,
1683                                        true,
1684                                        false,
1685                                        !s->permissions_start_only,
1686                                        !s->root_directory_start_only,
1687                                        false,
1688                                        false,
1689                                        &s->control_pid)) < 0)
1690                         goto fail;
1691
1692                 service_set_state(s, SERVICE_START_POST);
1693         } else
1694                 service_enter_running(s, true);
1695
1696         return;
1697
1698 fail:
1699         log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1700         service_enter_stop(s, false);
1701 }
1702
1703 static void service_enter_start(Service *s) {
1704         pid_t pid;
1705         int r;
1706
1707         assert(s);
1708
1709         assert(s->exec_command[SERVICE_EXEC_START]);
1710         assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1711
1712         if (s->type == SERVICE_FORKING)
1713                 service_unwatch_control_pid(s);
1714         else
1715                 service_unwatch_main_pid(s);
1716
1717         if ((r = service_spawn(s,
1718                                s->exec_command[SERVICE_EXEC_START],
1719                                s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1720                                true,
1721                                true,
1722                                true,
1723                                true,
1724                                s->notify_access != NOTIFY_NONE,
1725                                &pid)) < 0)
1726                 goto fail;
1727
1728         if (s->type == SERVICE_SIMPLE) {
1729                 /* For simple services we immediately start
1730                  * the START_POST binaries. */
1731
1732                 service_set_main_pid(s, pid);
1733                 service_enter_start_post(s);
1734
1735         } else  if (s->type == SERVICE_FORKING) {
1736
1737                 /* For forking services we wait until the start
1738                  * process exited. */
1739
1740                 s->control_command_id = SERVICE_EXEC_START;
1741                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1742
1743                 s->control_pid = pid;
1744                 service_set_state(s, SERVICE_START);
1745
1746         } else if (s->type == SERVICE_FINISH ||
1747                    s->type == SERVICE_DBUS ||
1748                    s->type == SERVICE_NOTIFY) {
1749
1750                 /* For finishing services we wait until the start
1751                  * process exited, too, but it is our main process. */
1752
1753                 /* For D-Bus services we know the main pid right away,
1754                  * but wait for the bus name to appear on the
1755                  * bus. Notify services are similar. */
1756
1757                 service_set_main_pid(s, pid);
1758                 service_set_state(s, SERVICE_START);
1759         } else
1760                 assert_not_reached("Unknown service type");
1761
1762         return;
1763
1764 fail:
1765         log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
1766         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1767 }
1768
1769 static void service_enter_start_pre(Service *s) {
1770         int r;
1771
1772         assert(s);
1773
1774         service_unwatch_control_pid(s);
1775
1776         s->control_command_id = SERVICE_EXEC_START_PRE;
1777         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1778                 if ((r = service_spawn(s,
1779                                        s->control_command,
1780                                        true,
1781                                        false,
1782                                        !s->permissions_start_only,
1783                                        !s->root_directory_start_only,
1784                                        true,
1785                                        false,
1786                                        &s->control_pid)) < 0)
1787                         goto fail;
1788
1789                 service_set_state(s, SERVICE_START_PRE);
1790         } else
1791                 service_enter_start(s);
1792
1793         return;
1794
1795 fail:
1796         log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
1797         service_enter_dead(s, false, true);
1798 }
1799
1800 static void service_enter_restart(Service *s) {
1801         int r;
1802         DBusError error;
1803
1804         assert(s);
1805         dbus_error_init(&error);
1806
1807         service_enter_dead(s, true, false);
1808
1809         if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
1810                 goto fail;
1811
1812         log_debug("%s scheduled restart job.", s->meta.id);
1813         return;
1814
1815 fail:
1816         log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
1817         service_enter_dead(s, false, false);
1818
1819         dbus_error_free(&error);
1820 }
1821
1822 static void service_enter_reload(Service *s) {
1823         int r;
1824
1825         assert(s);
1826
1827         service_unwatch_control_pid(s);
1828
1829         s->control_command_id = SERVICE_EXEC_RELOAD;
1830         if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1831                 if ((r = service_spawn(s,
1832                                        s->control_command,
1833                                        true,
1834                                        false,
1835                                        !s->permissions_start_only,
1836                                        !s->root_directory_start_only,
1837                                        false,
1838                                        false,
1839                                        &s->control_pid)) < 0)
1840                         goto fail;
1841
1842                 service_set_state(s, SERVICE_RELOAD);
1843         } else
1844                 service_enter_running(s, true);
1845
1846         return;
1847
1848 fail:
1849         log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
1850         service_enter_stop(s, false);
1851 }
1852
1853 static void service_run_next(Service *s, bool success) {
1854         int r;
1855
1856         assert(s);
1857         assert(s->control_command);
1858         assert(s->control_command->command_next);
1859
1860         if (!success)
1861                 s->failure = true;
1862
1863         s->control_command = s->control_command->command_next;
1864
1865         service_unwatch_control_pid(s);
1866
1867         if ((r = service_spawn(s,
1868                                s->control_command,
1869                                true,
1870                                false,
1871                                !s->permissions_start_only,
1872                                !s->root_directory_start_only,
1873                                s->control_command_id == SERVICE_EXEC_START_PRE ||
1874                                s->control_command_id == SERVICE_EXEC_STOP_POST,
1875                                false,
1876                                &s->control_pid)) < 0)
1877                 goto fail;
1878
1879         return;
1880
1881 fail:
1882         log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
1883
1884         if (s->state == SERVICE_START_PRE)
1885                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1886         else if (s->state == SERVICE_STOP)
1887                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1888         else if (s->state == SERVICE_STOP_POST)
1889                 service_enter_dead(s, false, true);
1890         else
1891                 service_enter_stop(s, false);
1892 }
1893
1894 static int service_start(Unit *u) {
1895         Service *s = SERVICE(u);
1896
1897         assert(s);
1898
1899         /* We cannot fulfill this request right now, try again later
1900          * please! */
1901         if (s->state == SERVICE_STOP ||
1902             s->state == SERVICE_STOP_SIGTERM ||
1903             s->state == SERVICE_STOP_SIGKILL ||
1904             s->state == SERVICE_STOP_POST ||
1905             s->state == SERVICE_FINAL_SIGTERM ||
1906             s->state == SERVICE_FINAL_SIGKILL)
1907                 return -EAGAIN;
1908
1909         /* Already on it! */
1910         if (s->state == SERVICE_START_PRE ||
1911             s->state == SERVICE_START ||
1912             s->state == SERVICE_START_POST)
1913                 return 0;
1914
1915         assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
1916
1917         /* Make sure we don't enter a busy loop of some kind. */
1918         if (!ratelimit_test(&s->ratelimit)) {
1919                 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1920                 return -ECANCELED;
1921         }
1922
1923         if ((s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1924              s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1925              s->exec_context.std_error == EXEC_OUTPUT_SOCKET) &&
1926             s->socket_fd < 0) {
1927                 log_warning("%s can only be started with a per-connection socket.", u->meta.id);
1928                 return -EINVAL;
1929         }
1930
1931         s->failure = false;
1932         s->main_pid_known = false;
1933         s->allow_restart = true;
1934
1935         service_enter_start_pre(s);
1936         return 0;
1937 }
1938
1939 static int service_stop(Unit *u) {
1940         Service *s = SERVICE(u);
1941
1942         assert(s);
1943
1944         /* This is a user request, so don't do restarts on this
1945          * shutdown. */
1946         s->allow_restart = false;
1947
1948         /* Already on it */
1949         if (s->state == SERVICE_STOP ||
1950             s->state == SERVICE_STOP_SIGTERM ||
1951             s->state == SERVICE_STOP_SIGKILL ||
1952             s->state == SERVICE_STOP_POST ||
1953             s->state == SERVICE_FINAL_SIGTERM ||
1954             s->state == SERVICE_FINAL_SIGKILL)
1955                 return 0;
1956
1957         /* Don't allow a restart */
1958         if (s->state == SERVICE_AUTO_RESTART) {
1959                 service_set_state(s, SERVICE_DEAD);
1960                 return 0;
1961         }
1962
1963         /* If there's already something running we go directly into
1964          * kill mode. */
1965         if (s->state == SERVICE_START_PRE ||
1966             s->state == SERVICE_START ||
1967             s->state == SERVICE_START_POST ||
1968             s->state == SERVICE_RELOAD) {
1969                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1970                 return 0;
1971         }
1972
1973         assert(s->state == SERVICE_RUNNING ||
1974                s->state == SERVICE_EXITED);
1975
1976         service_enter_stop(s, true);
1977         return 0;
1978 }
1979
1980 static int service_reload(Unit *u) {
1981         Service *s = SERVICE(u);
1982
1983         assert(s);
1984
1985         assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1986
1987         service_enter_reload(s);
1988         return 0;
1989 }
1990
1991 static bool service_can_reload(Unit *u) {
1992         Service *s = SERVICE(u);
1993
1994         assert(s);
1995
1996         return !!s->exec_command[SERVICE_EXEC_RELOAD];
1997 }
1998
1999 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2000         Service *s = SERVICE(u);
2001
2002         assert(u);
2003         assert(f);
2004         assert(fds);
2005
2006         unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2007         unit_serialize_item(u, f, "failure", yes_no(s->failure));
2008
2009         if (s->control_pid > 0)
2010                 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2011
2012         if (s->main_pid_known && s->main_pid > 0)
2013                 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2014
2015         unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2016
2017         if (s->status_text)
2018                 unit_serialize_item(u, f, "status-text", s->status_text);
2019
2020         /* There's a minor uncleanliness here: if there are multiple
2021          * commands attached here, we will start from the first one
2022          * again */
2023         if (s->control_command_id >= 0)
2024                 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2025
2026         if (s->socket_fd >= 0) {
2027                 int copy;
2028
2029                 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2030                         return copy;
2031
2032                 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2033         }
2034
2035         if (s->main_exec_status.pid > 0) {
2036                 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2037
2038                 if (s->main_exec_status.start_timestamp.realtime > 0) {
2039                         unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2040                                                    "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2041
2042                         unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2043                                                    "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2044                 }
2045
2046                 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2047                         unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2048                                                    "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2049                         unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2050                                                    "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2051
2052                         unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2053                         unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2054                 }
2055         }
2056
2057         return 0;
2058 }
2059
2060 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2061         Service *s = SERVICE(u);
2062         int r;
2063
2064         assert(u);
2065         assert(key);
2066         assert(value);
2067         assert(fds);
2068
2069         if (streq(key, "state")) {
2070                 ServiceState state;
2071
2072                 if ((state = service_state_from_string(value)) < 0)
2073                         log_debug("Failed to parse state value %s", value);
2074                 else
2075                         s->deserialized_state = state;
2076         } else if (streq(key, "failure")) {
2077                 int b;
2078
2079                 if ((b = parse_boolean(value)) < 0)
2080                         log_debug("Failed to parse failure value %s", value);
2081                 else
2082                         s->failure = b || s->failure;
2083         } else if (streq(key, "control-pid")) {
2084                 pid_t pid;
2085
2086                 if ((r = parse_pid(value, &pid)) < 0)
2087                         log_debug("Failed to parse control-pid value %s", value);
2088                 else
2089                         s->control_pid = pid;
2090         } else if (streq(key, "main-pid")) {
2091                 pid_t pid;
2092
2093                 if ((r = parse_pid(value, &pid)) < 0)
2094                         log_debug("Failed to parse main-pid value %s", value);
2095                 else
2096                         service_set_main_pid(s, (pid_t) pid);
2097         } else if (streq(key, "main-pid-known")) {
2098                 int b;
2099
2100                 if ((b = parse_boolean(value)) < 0)
2101                         log_debug("Failed to parse main-pid-known value %s", value);
2102                 else
2103                         s->main_pid_known = b;
2104         } else if (streq(key, "status-text")) {
2105                 char *t;
2106
2107                 if ((t = strdup(value))) {
2108                         free(s->status_text);
2109                         s->status_text = t;
2110                 }
2111
2112         } else if (streq(key, "control-command")) {
2113                 ServiceExecCommand id;
2114
2115                 if ((id = service_exec_command_from_string(value)) < 0)
2116                         log_debug("Failed to parse exec-command value %s", value);
2117                 else {
2118                         s->control_command_id = id;
2119                         s->control_command = s->exec_command[id];
2120                 }
2121         } else if (streq(key, "socket-fd")) {
2122                 int fd;
2123
2124                 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2125                         log_debug("Failed to parse socket-fd value %s", value);
2126                 else {
2127
2128                         if (s->socket_fd >= 0)
2129                                 close_nointr_nofail(s->socket_fd);
2130                         s->socket_fd = fdset_remove(fds, fd);
2131                 }
2132         } else if (streq(key, "main-exec-status-pid")) {
2133                 pid_t pid;
2134
2135                 if ((r = parse_pid(value, &pid)) < 0)
2136                         log_debug("Failed to parse main-exec-status-pid value %s", value);
2137                 else
2138                         s->main_exec_status.pid = pid;
2139         } else if (streq(key, "main-exec-status-code")) {
2140                 int i;
2141
2142                 if ((r = safe_atoi(value, &i)) < 0)
2143                         log_debug("Failed to parse main-exec-status-code value %s", value);
2144                 else
2145                         s->main_exec_status.code = i;
2146         } else if (streq(key, "main-exec-status-status")) {
2147                 int i;
2148
2149                 if ((r = safe_atoi(value, &i)) < 0)
2150                         log_debug("Failed to parse main-exec-status-status value %s", value);
2151                 else
2152                         s->main_exec_status.status = i;
2153         } else if (streq(key, "main-exec-status-start-realtime")) {
2154                 uint64_t k;
2155
2156                 if ((r = safe_atou64(value, &k)) < 0)
2157                         log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2158                 else
2159                         s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2160         } else if (streq(key, "main-exec-status-start-monotonic")) {
2161                 uint64_t k;
2162
2163                 if ((r = safe_atou64(value, &k)) < 0)
2164                         log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2165                 else
2166                         s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2167         } else if (streq(key, "main-exec-status-exit-realtime")) {
2168                 uint64_t k;
2169
2170                 if ((r = safe_atou64(value, &k)) < 0)
2171                         log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2172                 else
2173                         s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2174         } else if (streq(key, "main-exec-status-exit-monotonic")) {
2175                 uint64_t k;
2176
2177                 if ((r = safe_atou64(value, &k)) < 0)
2178                         log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2179                 else
2180                         s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
2181         } else
2182                 log_debug("Unknown serialization key '%s'", key);
2183
2184         return 0;
2185 }
2186
2187 static UnitActiveState service_active_state(Unit *u) {
2188         assert(u);
2189
2190         return state_translation_table[SERVICE(u)->state];
2191 }
2192
2193 static const char *service_sub_state_to_string(Unit *u) {
2194         assert(u);
2195
2196         return service_state_to_string(SERVICE(u)->state);
2197 }
2198
2199 static bool service_check_gc(Unit *u) {
2200         Service *s = SERVICE(u);
2201
2202         assert(s);
2203
2204         return !!s->sysv_path;
2205 }
2206
2207 static bool service_check_snapshot(Unit *u) {
2208         Service *s = SERVICE(u);
2209
2210         assert(s);
2211
2212         return !s->got_socket_fd;
2213 }
2214
2215 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2216         Service *s = SERVICE(u);
2217         bool success;
2218
2219         assert(s);
2220         assert(pid >= 0);
2221
2222         success = is_clean_exit(code, status);
2223
2224         if (s->main_pid == pid) {
2225
2226                 exec_status_exit(&s->main_exec_status, pid, code, status);
2227                 s->main_pid = 0;
2228
2229                 if (s->type != SERVICE_FORKING) {
2230                         assert(s->exec_command[SERVICE_EXEC_START]);
2231                         s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
2232
2233                         if (s->exec_command[SERVICE_EXEC_START]->ignore)
2234                                 success = true;
2235                 }
2236
2237                 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2238                          "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2239                 s->failure = s->failure || !success;
2240
2241                 /* The service exited, so the service is officially
2242                  * gone. */
2243
2244                 switch (s->state) {
2245
2246                 case SERVICE_START_POST:
2247                 case SERVICE_RELOAD:
2248                 case SERVICE_STOP:
2249                         /* Need to wait until the operation is
2250                          * done */
2251                         break;
2252
2253                 case SERVICE_START:
2254                         if (s->type == SERVICE_FINISH) {
2255                                 /* This was our main goal, so let's go on */
2256                                 if (success)
2257                                         service_enter_start_post(s);
2258                                 else
2259                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2260                                 break;
2261                         } else {
2262                                 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2263
2264                                 /* Fall through */
2265                         }
2266
2267                 case SERVICE_RUNNING:
2268                         service_enter_running(s, success);
2269                         break;
2270
2271                 case SERVICE_STOP_SIGTERM:
2272                 case SERVICE_STOP_SIGKILL:
2273
2274                         if (!control_pid_good(s))
2275                                 service_enter_stop_post(s, success);
2276
2277                         /* If there is still a control process, wait for that first */
2278                         break;
2279
2280                 default:
2281                         assert_not_reached("Uh, main process died at wrong time.");
2282                 }
2283
2284         } else if (s->control_pid == pid) {
2285
2286                 if (s->control_command) {
2287                         exec_status_exit(&s->control_command->exec_status, pid, code, status);
2288
2289                         if (s->control_command->ignore)
2290                                 success = true;
2291                 }
2292
2293                 s->control_pid = 0;
2294
2295                 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2296                          "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2297                 s->failure = s->failure || !success;
2298
2299                 /* If we are shutting things down anyway we
2300                  * don't care about failing commands. */
2301
2302                 if (s->control_command && s->control_command->command_next && success) {
2303
2304                         /* There is another command to *
2305                          * execute, so let's do that. */
2306
2307                         log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
2308                         service_run_next(s, success);
2309
2310                 } else {
2311                         /* No further commands for this step, so let's
2312                          * figure out what to do next */
2313
2314                         s->control_command = NULL;
2315                         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2316
2317                         log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2318
2319                         switch (s->state) {
2320
2321                         case SERVICE_START_PRE:
2322                                 if (success)
2323                                         service_enter_start(s);
2324                                 else
2325                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2326                                 break;
2327
2328                         case SERVICE_START:
2329                                 assert(s->type == SERVICE_FORKING);
2330
2331                                 /* Let's try to load the pid
2332                                  * file here if we can. We
2333                                  * ignore the return value,
2334                                  * since the PID file might
2335                                  * actually be created by a
2336                                  * START_POST script */
2337
2338                                 if (success) {
2339                                         if (s->pid_file)
2340                                                 service_load_pid_file(s);
2341
2342                                         service_enter_start_post(s);
2343                                 } else
2344                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2345
2346                                 break;
2347
2348                         case SERVICE_START_POST:
2349                                 if (success && s->pid_file && !s->main_pid_known) {
2350                                         int r;
2351
2352                                         /* Hmm, let's see if we can
2353                                          * load the pid now after the
2354                                          * start-post scripts got
2355                                          * executed. */
2356
2357                                         if ((r = service_load_pid_file(s)) < 0)
2358                                                 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2359                                 }
2360
2361                                 /* Fall through */
2362
2363                         case SERVICE_RELOAD:
2364                                 if (success)
2365                                         service_enter_running(s, true);
2366                                 else
2367                                         service_enter_stop(s, false);
2368
2369                                 break;
2370
2371                         case SERVICE_STOP:
2372                                 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2373                                 break;
2374
2375                         case SERVICE_STOP_SIGTERM:
2376                         case SERVICE_STOP_SIGKILL:
2377                                 if (main_pid_good(s) <= 0)
2378                                         service_enter_stop_post(s, success);
2379
2380                                 /* If there is still a service
2381                                  * process around, wait until
2382                                  * that one quit, too */
2383                                 break;
2384
2385                         case SERVICE_STOP_POST:
2386                         case SERVICE_FINAL_SIGTERM:
2387                         case SERVICE_FINAL_SIGKILL:
2388                                 service_enter_dead(s, success, true);
2389                                 break;
2390
2391                         default:
2392                                 assert_not_reached("Uh, control process died at wrong time.");
2393                         }
2394                 }
2395         }
2396 }
2397
2398 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2399         Service *s = SERVICE(u);
2400
2401         assert(s);
2402         assert(elapsed == 1);
2403
2404         assert(w == &s->timer_watch);
2405
2406         switch (s->state) {
2407
2408         case SERVICE_START_PRE:
2409         case SERVICE_START:
2410                 log_warning("%s operation timed out. Terminating.", u->meta.id);
2411                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2412                 break;
2413
2414         case SERVICE_START_POST:
2415         case SERVICE_RELOAD:
2416                 log_warning("%s operation timed out. Stopping.", u->meta.id);
2417                 service_enter_stop(s, false);
2418                 break;
2419
2420         case SERVICE_STOP:
2421                 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2422                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2423                 break;
2424
2425         case SERVICE_STOP_SIGTERM:
2426                 log_warning("%s stopping timed out. Killing.", u->meta.id);
2427                 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2428                 break;
2429
2430         case SERVICE_STOP_SIGKILL:
2431                 /* Uh, wie sent a SIGKILL and it is still not gone?
2432                  * Must be something we cannot kill, so let's just be
2433                  * weirded out and continue */
2434
2435                 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2436                 service_enter_stop_post(s, false);
2437                 break;
2438
2439         case SERVICE_STOP_POST:
2440                 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2441                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2442                 break;
2443
2444         case SERVICE_FINAL_SIGTERM:
2445                 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2446                 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2447                 break;
2448
2449         case SERVICE_FINAL_SIGKILL:
2450                 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
2451                 service_enter_dead(s, false, true);
2452                 break;
2453
2454         case SERVICE_AUTO_RESTART:
2455                 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2456                 service_enter_restart(s);
2457                 break;
2458
2459         default:
2460                 assert_not_reached("Timeout at wrong time.");
2461         }
2462 }
2463
2464 static void service_cgroup_notify_event(Unit *u) {
2465         Service *s = SERVICE(u);
2466
2467         assert(u);
2468
2469         log_debug("%s: cgroup is empty", u->meta.id);
2470
2471         switch (s->state) {
2472
2473                 /* Waiting for SIGCHLD is usually more interesting,
2474                  * because it includes return codes/signals. Which is
2475                  * why we ignore the cgroup events for most cases,
2476                  * except when we don't know pid which to expect the
2477                  * SIGCHLD for. */
2478
2479         case SERVICE_RUNNING:
2480                 service_enter_running(s, true);
2481                 break;
2482
2483         default:
2484                 ;
2485         }
2486 }
2487
2488 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2489         Service *s = SERVICE(u);
2490         const char *e;
2491
2492         assert(u);
2493
2494         if (s->notify_access == NOTIFY_NONE) {
2495                 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2496                             u->meta.id, (unsigned long) pid);
2497                 return;
2498         }
2499
2500         if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2501                 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2502                             u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2503                 return;
2504         }
2505
2506         log_debug("%s: Got message", u->meta.id);
2507
2508         /* Interpret MAINPID= */
2509         if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2510             (s->state == SERVICE_START ||
2511              s->state == SERVICE_START_POST ||
2512              s->state == SERVICE_RUNNING ||
2513              s->state == SERVICE_RELOAD)) {
2514
2515                 if (parse_pid(e + 8, &pid) < 0)
2516                         log_warning("Failed to parse notification message %s", e);
2517                 else {
2518                         log_debug("%s: got %s", u->meta.id, e);
2519                         service_set_main_pid(s, pid);
2520                 }
2521         }
2522
2523         /* Interpret READY= */
2524         if (s->type == SERVICE_NOTIFY &&
2525             s->state == SERVICE_START &&
2526             strv_find(tags, "READY=1")) {
2527                 log_debug("%s: got READY=1", u->meta.id);
2528
2529                 service_enter_start_post(s);
2530         }
2531
2532         /* Interpret STATUS= */
2533         if ((e = strv_find_prefix(tags, "STATUS="))) {
2534                 char *t;
2535
2536                 if (e[7]) {
2537                         if (!(t = strdup(e+7))) {
2538                                 log_error("Failed to allocate string.");
2539                                 return;
2540                         }
2541
2542                         log_debug("%s: got %s", u->meta.id, e);
2543
2544                         free(s->status_text);
2545                         s->status_text = t;
2546                 } else {
2547                         free(s->status_text);
2548                         s->status_text = NULL;
2549                 }
2550
2551         }
2552 }
2553
2554 static int service_enumerate(Manager *m) {
2555         char **p;
2556         unsigned i;
2557         DIR *d = NULL;
2558         char *path = NULL, *fpath = NULL, *name = NULL;
2559         int r;
2560
2561         assert(m);
2562
2563         STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2564                 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2565                         struct dirent *de;
2566
2567                         free(path);
2568                         path = NULL;
2569                         if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2570                                 r = -ENOMEM;
2571                                 goto finish;
2572                         }
2573
2574                         if (d)
2575                                 closedir(d);
2576
2577                         if (!(d = opendir(path))) {
2578                                 if (errno != ENOENT)
2579                                         log_warning("opendir() failed on %s: %s", path, strerror(errno));
2580
2581                                 continue;
2582                         }
2583
2584                         while ((de = readdir(d))) {
2585                                 Unit *service;
2586                                 int a, b;
2587
2588                                 if (ignore_file(de->d_name))
2589                                         continue;
2590
2591                                 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2592                                         continue;
2593
2594                                 if (strlen(de->d_name) < 4)
2595                                         continue;
2596
2597                                 a = undecchar(de->d_name[1]);
2598                                 b = undecchar(de->d_name[2]);
2599
2600                                 if (a < 0 || b < 0)
2601                                         continue;
2602
2603                                 free(fpath);
2604                                 fpath = NULL;
2605                                 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2606                                         r = -ENOMEM;
2607                                         goto finish;
2608                                 }
2609
2610                                 if (access(fpath, X_OK) < 0) {
2611
2612                                         if (errno != ENOENT)
2613                                                 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2614
2615                                         continue;
2616                                 }
2617
2618                                 free(name);
2619                                 if (!(name = sysv_translate_name(de->d_name + 3))) {
2620                                         r = -ENOMEM;
2621                                         goto finish;
2622                                 }
2623
2624                                 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2625                                         log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2626                                         continue;
2627                                 }
2628
2629                                 if (de->d_name[0] == 'S' &&
2630                                     (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
2631                                         SERVICE(service)->sysv_start_priority =
2632                                                 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2633
2634                                 manager_dispatch_load_queue(m);
2635                                 service = unit_follow_merge(service);
2636
2637                                 /* If this is a native service, rely
2638                                  * on native ways to pull in a
2639                                  * service, don't pull it in via sysv
2640                                  * rcN.d links. */
2641                                 if (service->meta.fragment_path)
2642                                         continue;
2643
2644                                 if (de->d_name[0] == 'S') {
2645
2646                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2647                                                 goto finish;
2648
2649                                 } else if (de->d_name[0] == 'K' &&
2650                                            (rcnd_table[i].type == RUNLEVEL_DOWN ||
2651                                             rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2652
2653                                         /* We honour K links only for
2654                                          * halt/reboot. For the normal
2655                                          * runlevels we assume the
2656                                          * stop jobs will be
2657                                          * implicitly added by the
2658                                          * core logic. Also, we don't
2659                                          * really distuingish here
2660                                          * between the runlevels 0 and
2661                                          * 6 and just add them to the
2662                                          * special shutdown target. On
2663                                          * SUSE the boot.d/ runlevel
2664                                          * is also used for shutdown,
2665                                          * so we add links for that
2666                                          * too to the shutdown
2667                                          * target.*/
2668
2669                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2670                                                 goto finish;
2671                                 }
2672                         }
2673                 }
2674
2675         r = 0;
2676
2677 finish:
2678         free(path);
2679         free(fpath);
2680         free(name);
2681
2682         if (d)
2683                 closedir(d);
2684
2685         return r;
2686 }
2687
2688 static void service_bus_name_owner_change(
2689                 Unit *u,
2690                 const char *name,
2691                 const char *old_owner,
2692                 const char *new_owner) {
2693
2694         Service *s = SERVICE(u);
2695
2696         assert(s);
2697         assert(name);
2698
2699         assert(streq(s->bus_name, name));
2700         assert(old_owner || new_owner);
2701
2702         if (old_owner && new_owner)
2703                 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2704         else if (old_owner)
2705                 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2706         else
2707                 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2708
2709         s->bus_name_good = !!new_owner;
2710
2711         if (s->type == SERVICE_DBUS) {
2712
2713                 /* service_enter_running() will figure out what to
2714                  * do */
2715                 if (s->state == SERVICE_RUNNING)
2716                         service_enter_running(s, true);
2717                 else if (s->state == SERVICE_START && new_owner)
2718                         service_enter_start_post(s);
2719
2720         } else if (new_owner &&
2721                    s->main_pid <= 0 &&
2722                    (s->state == SERVICE_START ||
2723                     s->state == SERVICE_START_POST ||
2724                     s->state == SERVICE_RUNNING ||
2725                     s->state == SERVICE_RELOAD)) {
2726
2727                 /* Try to acquire PID from bus service */
2728                 log_debug("Trying to acquire PID from D-Bus name...");
2729
2730                 bus_query_pid(u->meta.manager, name);
2731         }
2732 }
2733
2734 static void service_bus_query_pid_done(
2735                 Unit *u,
2736                 const char *name,
2737                 pid_t pid) {
2738
2739         Service *s = SERVICE(u);
2740
2741         assert(s);
2742         assert(name);
2743
2744         log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2745
2746         if (s->main_pid <= 0 &&
2747             (s->state == SERVICE_START ||
2748              s->state == SERVICE_START_POST ||
2749              s->state == SERVICE_RUNNING ||
2750              s->state == SERVICE_RELOAD))
2751                 service_set_main_pid(s, pid);
2752 }
2753
2754 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
2755         assert(s);
2756         assert(fd >= 0);
2757
2758         /* This is called by the socket code when instantiating a new
2759          * service for a stream socket and the socket needs to be
2760          * configured. */
2761
2762         if (s->meta.load_state != UNIT_LOADED)
2763                 return -EINVAL;
2764
2765         if (s->socket_fd >= 0)
2766                 return -EBUSY;
2767
2768         if (s->state != SERVICE_DEAD)
2769                 return -EAGAIN;
2770
2771         s->socket_fd = fd;
2772         s->got_socket_fd = true;
2773         s->socket = sock;
2774
2775         return 0;
2776 }
2777
2778 static void service_reset_maintenance(Unit *u) {
2779         Service *s = SERVICE(u);
2780
2781         assert(s);
2782
2783         if (s->state == SERVICE_MAINTENANCE)
2784                 service_set_state(s, SERVICE_DEAD);
2785
2786         s->failure = false;
2787 }
2788
2789 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2790         [SERVICE_DEAD] = "dead",
2791         [SERVICE_START_PRE] = "start-pre",
2792         [SERVICE_START] = "start",
2793         [SERVICE_START_POST] = "start-post",
2794         [SERVICE_RUNNING] = "running",
2795         [SERVICE_EXITED] = "exited",
2796         [SERVICE_RELOAD] = "reload",
2797         [SERVICE_STOP] = "stop",
2798         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2799         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2800         [SERVICE_STOP_POST] = "stop-post",
2801         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2802         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2803         [SERVICE_MAINTENANCE] = "maintenance",
2804         [SERVICE_AUTO_RESTART] = "auto-restart",
2805 };
2806
2807 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2808
2809 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2810         [SERVICE_ONCE] = "once",
2811         [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2812         [SERVICE_RESTART_ALWAYS] = "restart-always",
2813 };
2814
2815 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2816
2817 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2818         [SERVICE_SIMPLE] = "simple",
2819         [SERVICE_FORKING] = "forking",
2820         [SERVICE_FINISH] = "finish",
2821         [SERVICE_DBUS] = "dbus",
2822         [SERVICE_NOTIFY] = "notify"
2823 };
2824
2825 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2826
2827 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2828         [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2829         [SERVICE_EXEC_START] = "ExecStart",
2830         [SERVICE_EXEC_START_POST] = "ExecStartPost",
2831         [SERVICE_EXEC_RELOAD] = "ExecReload",
2832         [SERVICE_EXEC_STOP] = "ExecStop",
2833         [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2834 };
2835
2836 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2837
2838 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2839         [NOTIFY_NONE] = "none",
2840         [NOTIFY_MAIN] = "main",
2841         [NOTIFY_ALL] = "all"
2842 };
2843
2844 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2845
2846 const UnitVTable service_vtable = {
2847         .suffix = ".service",
2848         .show_status = true,
2849
2850         .init = service_init,
2851         .done = service_done,
2852         .load = service_load,
2853
2854         .coldplug = service_coldplug,
2855
2856         .dump = service_dump,
2857
2858         .start = service_start,
2859         .stop = service_stop,
2860         .reload = service_reload,
2861
2862         .can_reload = service_can_reload,
2863
2864         .serialize = service_serialize,
2865         .deserialize_item = service_deserialize_item,
2866
2867         .active_state = service_active_state,
2868         .sub_state_to_string = service_sub_state_to_string,
2869
2870         .check_gc = service_check_gc,
2871         .check_snapshot = service_check_snapshot,
2872
2873         .sigchld_event = service_sigchld_event,
2874         .timer_event = service_timer_event,
2875
2876         .reset_maintenance = service_reset_maintenance,
2877
2878         .cgroup_notify_empty = service_cgroup_notify_event,
2879         .notify_message = service_notify_message,
2880
2881         .bus_name_owner_change = service_bus_name_owner_change,
2882         .bus_query_pid_done = service_bus_query_pid_done,
2883
2884         .bus_message_handler = bus_service_message_handler,
2885
2886         .enumerate = service_enumerate
2887 };