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