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
  37 #define COMMENTS "#;\n"
  38 #define NEWLINES "\n\r"
  39 #define LINE_MAX 4096
  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 */
  53         { "rc0.d",  SPECIAL_POWEROFF_TARGET,  RUNLEVEL_DOWN },
  54         { "rc1.d",  SPECIAL_RESCUE_TARGET,    RUNLEVEL_UP },
  55         { "rc2.d",  SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
  56         { "rc3.d",  SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
  57         { "rc4.d",  SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
  58         { "rc5.d",  SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
  59         { "rc6.d",  SPECIAL_REBOOT_TARGET,    RUNLEVEL_DOWN },
  60
  61         /* SUSE style boot.d */
  62         { "boot.d", SPECIAL_SYSINIT_TARGET,   RUNLEVEL_SYSINIT },
  63
  64         /* Debian style rcS.d */
  65         { "rcS.d",  SPECIAL_SYSINIT_TARGET,   RUNLEVEL_SYSINIT },
  66 };
  67
  68 #define RUNLEVELS_UP "12345"
  69 /* #define RUNLEVELS_DOWN "06" */
  70 /* #define RUNLEVELS_BOOT "bBsS" */
  71
  72 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
  73         [SERVICE_DEAD] = UNIT_INACTIVE,
  74         [SERVICE_START_PRE] = UNIT_ACTIVATING,
  75         [SERVICE_START] = UNIT_ACTIVATING,
  76         [SERVICE_START_POST] = UNIT_ACTIVATING,
  77         [SERVICE_RUNNING] = UNIT_ACTIVE,
  78         [SERVICE_EXITED] = UNIT_ACTIVE,
  79         [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
  80         [SERVICE_STOP] = UNIT_DEACTIVATING,
  81         [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
  82         [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
  83         [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
  84         [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
  85         [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
  86         [SERVICE_MAINTENANCE] = UNIT_INACTIVE,
  87         [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
  88 };
  89
  90 static void service_init(Unit *u) {
  91         Service *s = SERVICE(u);
  92
  93         assert(u);
  94         assert(u->meta.load_state == UNIT_STUB);
  95
  96         s->timeout_usec = DEFAULT_TIMEOUT_USEC;
  97         s->restart_usec = DEFAULT_RESTART_USEC;
  98         s->timer_watch.type = WATCH_INVALID;
  99         s->sysv_start_priority = -1;
 100         s->socket_fd = -1;
 101
 102         exec_context_init(&s->exec_context);
 103
 104         RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
 105
 106         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
 107 }
 108
 109 static void service_unwatch_control_pid(Service *s) {
 110         assert(s);
 111
 112         if (s->control_pid <= 0)
 113                 return;
 114
 115         unit_unwatch_pid(UNIT(s), s->control_pid);
 116         s->control_pid = 0;
 117 }
 118
 119 static void service_unwatch_main_pid(Service *s) {
 120         assert(s);
 121
 122         if (s->main_pid <= 0)
 123                 return;
 124
 125         unit_unwatch_pid(UNIT(s), s->main_pid);
 126         s->main_pid = 0;
 127 }
 128
 129 static int service_set_main_pid(Service *s, pid_t pid) {
 130         pid_t ppid;
 131
 132         assert(s);
 133
 134         if (pid <= 1)
 135                 return -EINVAL;
 136
 137         if (pid == getpid())
 138                 return -EINVAL;
 139
 140         if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
 141                 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
 142                             s->meta.id, (unsigned long) pid);
 143
 144         s->main_pid = pid;
 145         s->main_pid_known = true;
 146
 147         return 0;
 148 }
 149
 150 static void service_close_socket_fd(Service *s) {
 151         assert(s);
 152
 153         if (s->socket_fd < 0)
 154                 return;
 155
 156         close_nointr_nofail(s->socket_fd);
 157         s->socket_fd = -1;
 158 }
 159
 160 static void service_done(Unit *u) {
 161         Service *s = SERVICE(u);
 162
 163         assert(s);
 164
 165         free(s->pid_file);
 166         s->pid_file = NULL;
 167
 168         free(s->sysv_path);
 169         s->sysv_path = NULL;
 170
 171         free(s->sysv_runlevels);
 172         s->sysv_runlevels = NULL;
 173
 174         free(s->status_text);
 175         s->status_text = NULL;
 176
 177         exec_context_done(&s->exec_context);
 178         exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
 179         s->control_command = NULL;
 180
 181         /* This will leak a process, but at least no memory or any of
 182          * our resources */
 183         service_unwatch_main_pid(s);
 184         service_unwatch_control_pid(s);
 185
 186         if (s->bus_name)  {
 187                 unit_unwatch_bus_name(UNIT(u), s->bus_name);
 188                 free(s->bus_name);
 189                 s->bus_name = NULL;
 190         }
 191
 192         service_close_socket_fd(s);
 193
 194         unit_unwatch_timer(u, &s->timer_watch);
 195 }
 196
 197 static char *sysv_translate_name(const char *name) {
 198         char *r;
 199
 200         if (!(r = new(char, strlen(name) + sizeof(".service"))))
 201                 return NULL;
 202
 203         if (startswith(name, "boot."))
 204                 /* Drop SuSE-style boot. prefix */
 205                 strcpy(stpcpy(r, name + 5), ".service");
 206         else if (endswith(name, ".sh"))
 207                 /* Drop Debian-style .sh suffix */
 208                 strcpy(stpcpy(r, name) - 3, ".service");
 209         else
 210                 /* Normal init scripts */
 211                 strcpy(stpcpy(r, name), ".service");
 212
 213         return r;
 214 }
 215
 216 static int sysv_translate_facility(const char *name, char **_r) {
 217
 218         static const char * const table[] = {
 219                 /* LSB defined facilities */
 220                 "$local_fs",  SPECIAL_LOCAL_FS_TARGET,
 221                 "$network",   SPECIAL_NETWORK_TARGET,
 222                 "$named",     SPECIAL_NSS_LOOKUP_TARGET,
 223                 "$portmap",   SPECIAL_RPCBIND_TARGET,
 224                 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
 225                 "$syslog",    SPECIAL_SYSLOG_TARGET,
 226                 "$time",      SPECIAL_RTC_SET_TARGET,
 227
 228                 /* Debian extensions */
 229                 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
 230                 "$mail-transfer-agent",  SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
 231                 "$x-display-manager",    SPECIAL_DISPLAY_MANAGER_SERVICE
 232         };
 233
 234         unsigned i;
 235         char *r;
 236
 237         for (i = 0; i < ELEMENTSOF(table); i += 2)
 238                 if (streq(table[i], name)) {
 239                         if (!(r = strdup(table[i+1])))
 240                                 return -ENOMEM;
 241
 242                         goto finish;
 243                 }
 244
 245         if (*name == '$')
 246                 return 0;
 247
 248         if (!(r = sysv_translate_name(name)))
 249                 return -ENOMEM;
 250
 251 finish:
 252
 253         if (_r)
 254                 *_r = r;
 255
 256         return 1;
 257 }
 258
 259 static int sysv_fix_order(Service *s) {
 260         Meta *other;
 261         int r;
 262
 263         assert(s);
 264
 265         if (s->sysv_start_priority < 0)
 266                 return 0;
 267
 268         /* For each pair of services where at least one lacks a LSB
 269          * header, we use the start priority value to order things. */
 270
 271         LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
 272                 Service *t;
 273                 UnitDependency d;
 274
 275                 t = (Service*) other;
 276
 277                 if (s == t)
 278                         continue;
 279
 280                 if (t->sysv_start_priority < 0)
 281                         continue;
 282
 283                 /* If both units have modern headers we don't care
 284                  * about the priorities */
 285                 if ((!s->sysv_path || s->sysv_has_lsb) &&
 286                     (!t->sysv_path || t->sysv_has_lsb))
 287                         continue;
 288
 289                 if (t->sysv_start_priority < s->sysv_start_priority)
 290                         d = UNIT_AFTER;
 291                 else if (t->sysv_start_priority > s->sysv_start_priority)
 292                         d = UNIT_BEFORE;
 293                 else
 294                         continue;
 295
 296                 /* FIXME: Maybe we should compare the name here lexicographically? */
 297
 298                 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
 299                         return r;
 300         }
 301
 302         return 0;
 303 }
 304
 305 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
 306         ExecCommand *c;
 307
 308         if (!(c = new0(ExecCommand, 1)))
 309                 return NULL;
 310
 311         if (!(c->path = strdup(path))) {
 312                 free(c);
 313                 return NULL;
 314         }
 315
 316         if (!(c->argv = strv_new(path, arg1, NULL))) {
 317                 free(c->path);
 318                 free(c);
 319                 return NULL;
 320         }
 321
 322         return c;
 323 }
 324
 325 static int sysv_exec_commands(Service *s) {
 326         ExecCommand *c;
 327
 328         assert(s);
 329         assert(s->sysv_path);
 330
 331         if (!(c = exec_command_new(s->sysv_path, "start")))
 332                 return -ENOMEM;
 333         exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
 334
 335         if (!(c = exec_command_new(s->sysv_path, "stop")))
 336                 return -ENOMEM;
 337         exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
 338
 339         if (!(c = exec_command_new(s->sysv_path, "reload")))
 340                 return -ENOMEM;
 341         exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
 342
 343         return 0;
 344 }
 345
 346 static int service_load_sysv_path(Service *s, const char *path) {
 347         FILE *f;
 348         Unit *u;
 349         unsigned line = 0;
 350         int r;
 351         enum {
 352                 NORMAL,
 353                 DESCRIPTION,
 354                 LSB,
 355                 LSB_DESCRIPTION
 356         } state = NORMAL;
 357
 358         assert(s);
 359         assert(path);
 360
 361         u = UNIT(s);
 362
 363         if (!(f = fopen(path, "re"))) {
 364                 r = errno == ENOENT ? 0 : -errno;
 365                 goto finish;
 366         }
 367
 368         free(s->sysv_path);
 369         if (!(s->sysv_path = strdup(path))) {
 370                 r = -ENOMEM;
 371                 goto finish;
 372         }
 373
 374         while (!feof(f)) {
 375                 char l[LINE_MAX], *t;
 376
 377                 if (!fgets(l, sizeof(l), f)) {
 378                         if (feof(f))
 379                                 break;
 380
 381                         r = -errno;
 382                         log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
 383                         goto finish;
 384                 }
 385
 386                 line++;
 387
 388                 t = strstrip(l);
 389                 if (*t != '#')
 390                         continue;
 391
 392                 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
 393                         state = LSB;
 394                         s->sysv_has_lsb = true;
 395                         continue;
 396                 }
 397
 398                 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
 399                         state = NORMAL;
 400                         continue;
 401                 }
 402
 403                 t++;
 404                 t += strspn(t, WHITESPACE);
 405
 406                 if (state == NORMAL) {
 407
 408                         /* Try to parse Red Hat style chkconfig headers */
 409
 410                         if (startswith_no_case(t, "chkconfig:")) {
 411                                 int start_priority;
 412                                 char runlevels[16], *k;
 413
 414                                 state = NORMAL;
 415
 416                                 if (sscanf(t+10, "%15s %i %*i",
 417                                            runlevels,
 418                                            &start_priority) != 2) {
 419
 420                                         log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
 421                                         continue;
 422                                 }
 423
 424                                 /* A start priority gathered from the
 425                                  * symlink farms is preferred over the
 426                                  * data from the LSB header. */
 427                                 if (start_priority < 0 || start_priority > 99)
 428                                         log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
 429                                 else if (s->sysv_start_priority < 0)
 430                                         s->sysv_start_priority = start_priority;
 431
 432                                 char_array_0(runlevels);
 433                                 k = delete_chars(runlevels, WHITESPACE "-");
 434
 435                                 if (k[0]) {
 436                                         char *d;
 437
 438                                         if (!(d = strdup(k))) {
 439                                                 r = -ENOMEM;
 440                                                 goto finish;
 441                                         }
 442
 443                                         free(s->sysv_runlevels);
 444                                         s->sysv_runlevels = d;
 445                                 }
 446
 447                         } else if (startswith_no_case(t, "description:")) {
 448
 449                                 size_t k = strlen(t);
 450                                 char *d;
 451
 452                                 if (t[k-1] == '\\') {
 453                                         state = DESCRIPTION;
 454                                         t[k-1] = 0;
 455                                 }
 456
 457                                 if (!(d = strdup(strstrip(t+12)))) {
 458                                         r = -ENOMEM;
 459                                         goto finish;
 460                                 }
 461
 462                                 free(u->meta.description);
 463                                 u->meta.description = d;
 464
 465                         } else if (startswith_no_case(t, "pidfile:")) {
 466
 467                                 char *fn;
 468
 469                                 state = NORMAL;
 470
 471                                 fn = strstrip(t+8);
 472                                 if (!path_is_absolute(fn)) {
 473                                         log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
 474                                         continue;
 475                                 }
 476
 477                                 if (!(fn = strdup(fn))) {
 478                                         r = -ENOMEM;
 479                                         goto finish;
 480                                 }
 481
 482                                 free(s->pid_file);
 483                                 s->pid_file = fn;
 484                         }
 485
 486                 } else if (state == DESCRIPTION) {
 487
 488                         /* Try to parse Red Hat style description
 489                          * continuation */
 490
 491                         size_t k = strlen(t);
 492                         char *d;
 493
 494                         if (t[k-1] == '\\')
 495                                 t[k-1] = 0;
 496                         else
 497                                 state = NORMAL;
 498
 499                         assert(u->meta.description);
 500                         if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
 501                                 r = -ENOMEM;
 502                                 goto finish;
 503                         }
 504
 505                         free(u->meta.description);
 506                         u->meta.description = d;
 507
 508                 } else if (state == LSB || state == LSB_DESCRIPTION) {
 509
 510                         if (startswith_no_case(t, "Provides:")) {
 511                                 char *i, *w;
 512                                 size_t z;
 513
 514                                 state = LSB;
 515
 516                                 FOREACH_WORD(w, z, t+9, i) {
 517                                         char *n, *m;
 518
 519                                         if (!(n = strndup(w, z))) {
 520                                                 r = -ENOMEM;
 521                                                 goto finish;
 522                                         }
 523
 524                                         r = sysv_translate_facility(n, &m);
 525                                         free(n);
 526
 527                                         if (r < 0)
 528                                                 goto finish;
 529
 530                                         if (r == 0)
 531                                                 continue;
 532
 533                                         if (unit_name_to_type(m) == UNIT_SERVICE)
 534                                                 r = unit_add_name(u, m);
 535                                         else {
 536                                                 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
 537                                                         r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
 538                                         }
 539
 540                                         free(m);
 541
 542                                         if (r < 0)
 543                                                 goto finish;
 544                                 }
 545
 546                         } else if (startswith_no_case(t, "Required-Start:") ||
 547                                    startswith_no_case(t, "Should-Start:") ||
 548                                    startswith_no_case(t, "X-Start-Before:") ||
 549                                    startswith_no_case(t, "X-Start-After:")) {
 550                                 char *i, *w;
 551                                 size_t z;
 552
 553                                 state = LSB;
 554
 555                                 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
 556                                         char *n, *m;
 557
 558                                         if (!(n = strndup(w, z))) {
 559                                                 r = -ENOMEM;
 560                                                 goto finish;
 561                                         }
 562
 563                                         r = sysv_translate_facility(n, &m);
 564                                         free(n);
 565
 566                                         if (r < 0)
 567                                                 goto finish;
 568
 569                                         if (r == 0)
 570                                                 continue;
 571
 572                                         r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
 573                                         free(m);
 574
 575                                         if (r < 0)
 576                                                 goto finish;
 577                                 }
 578                         } else if (startswith_no_case(t, "Default-Start:")) {
 579                                 char *k, *d;
 580
 581                                 state = LSB;
 582
 583                                 k = delete_chars(t+14, WHITESPACE "-");
 584
 585                                 if (k[0] != 0) {
 586                                         if (!(d = strdup(k))) {
 587                                                 r = -ENOMEM;
 588                                                 goto finish;
 589                                         }
 590
 591                                         free(s->sysv_runlevels);
 592                                         s->sysv_runlevels = d;
 593                                 }
 594
 595                         } else if (startswith_no_case(t, "Description:")) {
 596                                 char *d;
 597
 598                                 state = LSB_DESCRIPTION;
 599
 600                                 if (!(d = strdup(strstrip(t+12)))) {
 601                                         r = -ENOMEM;
 602                                         goto finish;
 603                                 }
 604
 605                                 free(u->meta.description);
 606                                 u->meta.description = d;
 607
 608                         } else if (startswith_no_case(t, "Short-Description:") &&
 609                                    !u->meta.description) {
 610                                 char *d;
 611
 612                                 /* We use the short description only
 613                                  * if no long description is set. */
 614
 615                                 state = LSB;
 616
 617                                 if (!(d = strdup(strstrip(t+18)))) {
 618                                         r = -ENOMEM;
 619                                         goto finish;
 620                                 }
 621
 622                                 u->meta.description = d;
 623
 624                         } else if (startswith_no_case(t, "X-Interactive:")) {
 625                                 int b;
 626
 627                                 if ((b = parse_boolean(strstrip(t+14))) < 0) {
 628                                         log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
 629                                         continue;
 630                                 }
 631
 632                                 if (b)
 633                                         s->exec_context.std_input = EXEC_INPUT_TTY;
 634                                 else
 635                                         s->exec_context.std_input = EXEC_INPUT_NULL;
 636
 637                         } else if (state == LSB_DESCRIPTION) {
 638
 639                                 if (startswith(l, "#\t") || startswith(l, "#  ")) {
 640                                         char *d;
 641
 642                                         assert(u->meta.description);
 643                                         if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
 644                                                 r = -ENOMEM;
 645                                                 goto finish;
 646                                         }
 647
 648                                         free(u->meta.description);
 649                                         u->meta.description = d;
 650                                 } else
 651                                         state = LSB;
 652                         }
 653                 }
 654         }
 655
 656         if ((r = sysv_exec_commands(s)) < 0)
 657                 goto finish;
 658
 659         if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
 660                 /* If there a runlevels configured for this service
 661                  * but none of the standard ones, then we assume this
 662                  * is some special kind of service (which might be
 663                  * needed for early boot) and don't create any links
 664                  * to it. */
 665
 666                 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
 667                     (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
 668                         goto finish;
 669
 670         } else
 671                 /* Don't timeout special services during boot (like fsck) */
 672                 s->timeout_usec = 0;
 673
 674         /* Special setting for all SysV services */
 675         s->type = SERVICE_FORKING;
 676         s->valid_no_process = true;
 677         s->kill_mode = KILL_PROCESS_GROUP;
 678         s->restart = SERVICE_ONCE;
 679
 680         u->meta.load_state = UNIT_LOADED;
 681         r = 0;
 682
 683 finish:
 684
 685         if (f)
 686                 fclose(f);
 687
 688         return r;
 689 }
 690
 691 static int service_load_sysv_name(Service *s, const char *name) {
 692         char **p;
 693
 694         assert(s);
 695         assert(name);
 696
 697         /* For SysV services we strip the boot. or .sh
 698          * prefixes/suffixes. */
 699         if (startswith(name, "boot.") ||
 700             endswith(name, ".sh.service"))
 701                 return -ENOENT;
 702
 703         STRV_FOREACH(p, UNIT(s)->meta.manager->lookup_paths.sysvinit_path) {
 704                 char *path;
 705                 int r;
 706
 707                 if (asprintf(&path, "%s/%s", *p, name) < 0)
 708                         return -ENOMEM;
 709
 710                 assert(endswith(path, ".service"));
 711                 path[strlen(path)-8] = 0;
 712
 713                 r = service_load_sysv_path(s, path);
 714
 715                 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
 716                         /* Try Debian style xxx.sh source'able init scripts */
 717                         strcat(path, ".sh");
 718                         r = service_load_sysv_path(s, path);
 719                 }
 720
 721                 free(path);
 722
 723                 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
 724                         /* Try SUSE style boot.xxx init scripts */
 725
 726                         if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
 727                                 return -ENOMEM;
 728
 729                         path[strlen(path)-8] = 0;
 730                         r = service_load_sysv_path(s, path);
 731                         free(path);
 732                 }
 733
 734                 if (r < 0)
 735                         return r;
 736
 737                 if ((UNIT(s)->meta.load_state != UNIT_STUB))
 738                         break;
 739         }
 740
 741         return 0;
 742 }
 743
 744 static int service_load_sysv(Service *s) {
 745         const char *t;
 746         Iterator i;
 747         int r;
 748
 749         assert(s);
 750
 751         /* Load service data from SysV init scripts, preferably with
 752          * LSB headers ... */
 753
 754         if (strv_isempty(UNIT(s)->meta.manager->lookup_paths.sysvinit_path))
 755                 return 0;
 756
 757         if ((t = UNIT(s)->meta.id))
 758                 if ((r = service_load_sysv_name(s, t)) < 0)
 759                         return r;
 760
 761         if (UNIT(s)->meta.load_state == UNIT_STUB)
 762                 SET_FOREACH(t, UNIT(s)->meta.names, i) {
 763                         if (t == UNIT(s)->meta.id)
 764                                 continue;
 765
 766                         if ((r == service_load_sysv_name(s, t)) < 0)
 767                                 return r;
 768
 769                         if (UNIT(s)->meta.load_state != UNIT_STUB)
 770                                 break;
 771                 }
 772
 773         return 0;
 774 }
 775
 776 static int service_add_bus_name(Service *s) {
 777         char *n;
 778         int r;
 779
 780         assert(s);
 781         assert(s->bus_name);
 782
 783         if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
 784                 return 0;
 785
 786         r = unit_merge_by_name(UNIT(s), n);
 787         free(n);
 788
 789         return r;
 790 }
 791
 792 static int service_verify(Service *s) {
 793         assert(s);
 794
 795         if (UNIT(s)->meta.load_state != UNIT_LOADED)
 796                 return 0;
 797
 798         if (!s->exec_command[SERVICE_EXEC_START]) {
 799                 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
 800                 return -EINVAL;
 801         }
 802
 803         if (s->type == SERVICE_DBUS && !s->bus_name) {
 804                 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
 805                 return -EINVAL;
 806         }
 807
 808         return 0;
 809 }
 810
 811 static int service_load(Unit *u) {
 812         int r;
 813         Service *s = SERVICE(u);
 814
 815         assert(s);
 816
 817         /* Load a .service file */
 818         if ((r = unit_load_fragment(u)) < 0)
 819                 return r;
 820
 821         /* Load a classic init script as a fallback, if we couldn't find anything */
 822         if (u->meta.load_state == UNIT_STUB)
 823                 if ((r = service_load_sysv(s)) < 0)
 824                         return r;
 825
 826         /* Still nothing found? Then let's give up */
 827         if (u->meta.load_state == UNIT_STUB)
 828                 return -ENOENT;
 829
 830         /* We were able to load something, then let's add in the
 831          * dropin directories. */
 832         if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
 833                 return r;
 834
 835         /* This is a new unit? Then let's add in some extras */
 836         if (u->meta.load_state == UNIT_LOADED) {
 837                 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
 838                         return r;
 839
 840                 if ((r = unit_add_default_cgroup(u)) < 0)
 841                         return r;
 842
 843                 if ((r = sysv_fix_order(s)) < 0)
 844                         return r;
 845
 846                 if (s->bus_name) {
 847                         if ((r = service_add_bus_name(s)) < 0)
 848                                 return r;
 849
 850                         if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
 851                             return r;
 852                 }
 853
 854                 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
 855                         s->notify_access = NOTIFY_MAIN;
 856         }
 857
 858         return service_verify(s);
 859 }
 860
 861 static void service_dump(Unit *u, FILE *f, const char *prefix) {
 862
 863         ServiceExecCommand c;
 864         Service *s = SERVICE(u);
 865         const char *prefix2;
 866         char *p2;
 867
 868         assert(s);
 869
 870         p2 = strappend(prefix, "\t");
 871         prefix2 = p2 ? p2 : prefix;
 872
 873         fprintf(f,
 874                 "%sService State: %s\n"
 875                 "%sPermissionsStartOnly: %s\n"
 876                 "%sRootDirectoryStartOnly: %s\n"
 877                 "%sValidNoProcess: %s\n"
 878                 "%sKillMode: %s\n"
 879                 "%sType: %s\n"
 880                 "%sNotifyAccess: %s\n",
 881                 prefix, service_state_to_string(s->state),
 882                 prefix, yes_no(s->permissions_start_only),
 883                 prefix, yes_no(s->root_directory_start_only),
 884                 prefix, yes_no(s->valid_no_process),
 885                 prefix, kill_mode_to_string(s->kill_mode),
 886                 prefix, service_type_to_string(s->type),
 887                 prefix, notify_access_to_string(s->notify_access));
 888
 889         if (s->control_pid > 0)
 890                 fprintf(f,
 891                         "%sControl PID: %llu\n",
 892                         prefix, (unsigned long long) s->control_pid);
 893
 894         if (s->main_pid > 0)
 895                 fprintf(f,
 896                         "%sMain PID: %llu\n",
 897                         prefix, (unsigned long long) s->main_pid);
 898
 899         if (s->pid_file)
 900                 fprintf(f,
 901                         "%sPIDFile: %s\n",
 902                         prefix, s->pid_file);
 903
 904         if (s->bus_name)
 905                 fprintf(f,
 906                         "%sBusName: %s\n"
 907                         "%sBus Name Good: %s\n",
 908                         prefix, s->bus_name,
 909                         prefix, yes_no(s->bus_name_good));
 910
 911         exec_context_dump(&s->exec_context, f, prefix);
 912
 913         for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
 914
 915                 if (!s->exec_command[c])
 916                         continue;
 917
 918                 fprintf(f, "%s-> %s:\n",
 919                         prefix, service_exec_command_to_string(c));
 920
 921                 exec_command_dump_list(s->exec_command[c], f, prefix2);
 922         }
 923
 924         if (s->sysv_path)
 925                 fprintf(f,
 926                         "%sSysV Init Script Path: %s\n"
 927                         "%sSysV Init Script has LSB Header: %s\n",
 928                         prefix, s->sysv_path,
 929                         prefix, yes_no(s->sysv_has_lsb));
 930
 931         if (s->sysv_start_priority >= 0)
 932                 fprintf(f,
 933                         "%sSysVStartPriority: %i\n",
 934                         prefix, s->sysv_start_priority);
 935
 936         if (s->sysv_runlevels)
 937                 fprintf(f, "%sSysVRunLevels: %s\n",
 938                         prefix, s->sysv_runlevels);
 939
 940         if (s->status_text)
 941                 fprintf(f, "%sStatus Text: %s\n",
 942                         prefix, s->status_text);
 943
 944         free(p2);
 945 }
 946
 947 static int service_load_pid_file(Service *s) {
 948         char *k;
 949         int r;
 950         pid_t pid;
 951
 952         assert(s);
 953
 954         if (s->main_pid_known)
 955                 return 0;
 956
 957         assert(s->main_pid <= 0);
 958
 959         if (!s->pid_file)
 960                 return -ENOENT;
 961
 962         if ((r = read_one_line_file(s->pid_file, &k)) < 0)
 963                 return r;
 964
 965         r = parse_pid(k, &pid);
 966         free(k);
 967
 968         if (r < 0)
 969                 return r;
 970
 971         if (kill(pid, 0) < 0 && errno != EPERM) {
 972                 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
 973                             (unsigned long) pid, s->pid_file);
 974                 return -ESRCH;
 975         }
 976
 977         if ((r = service_set_main_pid(s, pid)) < 0)
 978                 return r;
 979
 980         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
 981                 /* FIXME: we need to do something here */
 982                 return r;
 983
 984         return 0;
 985 }
 986
 987 static int service_get_sockets(Service *s, Set **_set) {
 988         Set *set;
 989         Iterator i;
 990         char *t;
 991         int r;
 992
 993         assert(s);
 994         assert(_set);
 995
 996         /* Collects all Socket objects that belong to this
 997          * service. Note that a service might have multiple sockets
 998          * via multiple names. */
 999
1000         if (!(set = set_new(NULL, NULL)))
1001                 return -ENOMEM;
1002
1003         SET_FOREACH(t, UNIT(s)->meta.names, i) {
1004                 char *k;
1005                 Unit *p;
1006
1007                 /* Look for all socket objects that go by any of our
1008                  * units and collect their fds */
1009
1010                 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1011                         r = -ENOMEM;
1012                         goto fail;
1013                 }
1014
1015                 p = manager_get_unit(UNIT(s)->meta.manager, k);
1016                 free(k);
1017
1018                 if (!p)
1019                         continue;
1020
1021                 if ((r = set_put(set, p)) < 0)
1022                         goto fail;
1023         }
1024
1025         *_set = set;
1026         return 0;
1027
1028 fail:
1029         set_free(set);
1030         return r;
1031 }
1032
1033 static int service_notify_sockets_dead(Service *s) {
1034         Iterator i;
1035         Set *set;
1036         Socket *sock;
1037         int r;
1038
1039         assert(s);
1040
1041         /* Notifies all our sockets when we die */
1042         if ((r = service_get_sockets(s, &set)) < 0)
1043                 return r;
1044
1045         SET_FOREACH(sock, set, i)
1046                 socket_notify_service_dead(sock);
1047
1048         set_free(set);
1049
1050         return 0;
1051 }
1052
1053 static void service_set_state(Service *s, ServiceState state) {
1054         ServiceState old_state;
1055         assert(s);
1056
1057         old_state = s->state;
1058         s->state = state;
1059
1060         if (state != SERVICE_START_PRE &&
1061             state != SERVICE_START &&
1062             state != SERVICE_START_POST &&
1063             state != SERVICE_RELOAD &&
1064             state != SERVICE_STOP &&
1065             state != SERVICE_STOP_SIGTERM &&
1066             state != SERVICE_STOP_SIGKILL &&
1067             state != SERVICE_STOP_POST &&
1068             state != SERVICE_FINAL_SIGTERM &&
1069             state != SERVICE_FINAL_SIGKILL &&
1070             state != SERVICE_AUTO_RESTART)
1071                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1072
1073         if (state != SERVICE_START &&
1074             state != SERVICE_START_POST &&
1075             state != SERVICE_RUNNING &&
1076             state != SERVICE_RELOAD &&
1077             state != SERVICE_STOP &&
1078             state != SERVICE_STOP_SIGTERM &&
1079             state != SERVICE_STOP_SIGKILL)
1080                 service_unwatch_main_pid(s);
1081
1082         if (state != SERVICE_START_PRE &&
1083             state != SERVICE_START &&
1084             state != SERVICE_START_POST &&
1085             state != SERVICE_RELOAD &&
1086             state != SERVICE_STOP &&
1087             state != SERVICE_STOP_SIGTERM &&
1088             state != SERVICE_STOP_SIGKILL &&
1089             state != SERVICE_STOP_POST &&
1090             state != SERVICE_FINAL_SIGTERM &&
1091             state != SERVICE_FINAL_SIGKILL) {
1092                 service_unwatch_control_pid(s);
1093                 s->control_command = NULL;
1094                 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1095         }
1096
1097         if (state == SERVICE_DEAD ||
1098             state == SERVICE_STOP ||
1099             state == SERVICE_STOP_SIGTERM ||
1100             state == SERVICE_STOP_SIGKILL ||
1101             state == SERVICE_STOP_POST ||
1102             state == SERVICE_FINAL_SIGTERM ||
1103             state == SERVICE_FINAL_SIGKILL ||
1104             state == SERVICE_MAINTENANCE ||
1105             state == SERVICE_AUTO_RESTART)
1106                 service_notify_sockets_dead(s);
1107
1108         if (state != SERVICE_START_PRE &&
1109             state != SERVICE_START &&
1110             !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1111                 service_close_socket_fd(s);
1112
1113         if (old_state != state)
1114                 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1115
1116         unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1117 }
1118
1119 static int service_coldplug(Unit *u) {
1120         Service *s = SERVICE(u);
1121         int r;
1122
1123         assert(s);
1124         assert(s->state == SERVICE_DEAD);
1125
1126         if (s->deserialized_state != s->state) {
1127
1128                 if (s->deserialized_state == SERVICE_START_PRE ||
1129                     s->deserialized_state == SERVICE_START ||
1130                     s->deserialized_state == SERVICE_START_POST ||
1131                     s->deserialized_state == SERVICE_RELOAD ||
1132                     s->deserialized_state == SERVICE_STOP ||
1133                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1134                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1135                     s->deserialized_state == SERVICE_STOP_POST ||
1136                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1137                     s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1138                     s->deserialized_state == SERVICE_AUTO_RESTART) {
1139
1140                         if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1141                                 usec_t k;
1142
1143                                 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1144
1145                                 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1146                                         return r;
1147                         }
1148                 }
1149
1150                 if ((s->deserialized_state == SERVICE_START &&
1151                      (s->type == SERVICE_FORKING ||
1152                       s->type == SERVICE_DBUS ||
1153                       s->type == SERVICE_FINISH ||
1154                       s->type == SERVICE_NOTIFY)) ||
1155                     s->deserialized_state == SERVICE_START_POST ||
1156                     s->deserialized_state == SERVICE_RUNNING ||
1157                     s->deserialized_state == SERVICE_RELOAD ||
1158                     s->deserialized_state == SERVICE_STOP ||
1159                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1160                     s->deserialized_state == SERVICE_STOP_SIGKILL)
1161                         if (s->main_pid > 0)
1162                                 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1163                                         return r;
1164
1165                 if (s->deserialized_state == SERVICE_START_PRE ||
1166                     s->deserialized_state == SERVICE_START ||
1167                     s->deserialized_state == SERVICE_START_POST ||
1168                     s->deserialized_state == SERVICE_RELOAD ||
1169                     s->deserialized_state == SERVICE_STOP ||
1170                     s->deserialized_state == SERVICE_STOP_SIGTERM ||
1171                     s->deserialized_state == SERVICE_STOP_SIGKILL ||
1172                     s->deserialized_state == SERVICE_STOP_POST ||
1173                     s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1174                     s->deserialized_state == SERVICE_FINAL_SIGKILL)
1175                         if (s->control_pid > 0)
1176                                 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1177                                         return r;
1178
1179                 service_set_state(s, s->deserialized_state);
1180         }
1181
1182         return 0;
1183 }
1184
1185 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1186         Iterator i;
1187         int r;
1188         int *rfds = NULL;
1189         unsigned rn_fds = 0;
1190         Set *set;
1191         Socket *sock;
1192
1193         assert(s);
1194         assert(fds);
1195         assert(n_fds);
1196
1197         if ((r = service_get_sockets(s, &set)) < 0)
1198                 return r;
1199
1200         SET_FOREACH(sock, set, i) {
1201                 int *cfds;
1202                 unsigned cn_fds;
1203
1204                 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1205                         goto fail;
1206
1207                 if (!cfds)
1208                         continue;
1209
1210                 if (!rfds) {
1211                         rfds = cfds;
1212                         rn_fds = cn_fds;
1213                 } else {
1214                         int *t;
1215
1216                         if (!(t = new(int, rn_fds+cn_fds))) {
1217                                 free(cfds);
1218                                 r = -ENOMEM;
1219                                 goto fail;
1220                         }
1221
1222                         memcpy(t, rfds, rn_fds);
1223                         memcpy(t+rn_fds, cfds, cn_fds);
1224                         free(rfds);
1225                         free(cfds);
1226
1227                         rfds = t;
1228                         rn_fds = rn_fds+cn_fds;
1229                 }
1230         }
1231
1232         *fds = rfds;
1233         *n_fds = rn_fds;
1234
1235         set_free(set);
1236
1237         return 0;
1238
1239 fail:
1240         set_free(set);
1241         free(rfds);
1242
1243         return r;
1244 }
1245
1246 static int service_spawn(
1247                 Service *s,
1248                 ExecCommand *c,
1249                 bool timeout,
1250                 bool pass_fds,
1251                 bool apply_permissions,
1252                 bool apply_chroot,
1253                 bool set_notify_socket,
1254                 pid_t *_pid) {
1255
1256         pid_t pid;
1257         int r;
1258         int *fds = NULL;
1259         unsigned n_fds = 0;
1260         char **argv = NULL, **env = NULL;
1261
1262         assert(s);
1263         assert(c);
1264         assert(_pid);
1265
1266         if (pass_fds) {
1267                 if (s->socket_fd >= 0) {
1268                         fds = &s->socket_fd;
1269                         n_fds = 1;
1270                 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1271                         goto fail;
1272         }
1273
1274         if (timeout && s->timeout_usec) {
1275                 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1276                         goto fail;
1277         } else
1278                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1279
1280         if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1281                 r = -ENOMEM;
1282                 goto fail;
1283         }
1284
1285         if (set_notify_socket) {
1286                 char *t;
1287
1288                 if (asprintf(&t, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1289                         r = -ENOMEM;
1290                         goto fail;
1291                 }
1292
1293                 env = strv_env_set(s->meta.manager->environment, t);
1294                 free(t);
1295
1296                 if (!env) {
1297                         r = -ENOMEM;
1298                         goto fail;
1299                 }
1300         } else
1301                 env = s->meta.manager->environment;
1302
1303         r = exec_spawn(c,
1304                        argv,
1305                        &s->exec_context,
1306                        fds, n_fds,
1307                        env,
1308                        apply_permissions,
1309                        apply_chroot,
1310                        UNIT(s)->meta.manager->confirm_spawn,
1311                        UNIT(s)->meta.cgroup_bondings,
1312                        &pid);
1313
1314         strv_free(argv);
1315         argv = NULL;
1316
1317         if (set_notify_socket)
1318                 strv_free(env);
1319         env = NULL;
1320
1321         if (r < 0)
1322                 goto fail;
1323
1324         if (fds) {
1325                 if (s->socket_fd >= 0)
1326                         service_close_socket_fd(s);
1327                 else
1328                         free(fds);
1329         }
1330
1331         if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1332                 /* FIXME: we need to do something here */
1333                 goto fail;
1334
1335         *_pid = pid;
1336
1337         return 0;
1338
1339 fail:
1340         free(fds);
1341
1342         strv_free(argv);
1343
1344         if (set_notify_socket)
1345                 strv_free(env);
1346
1347         if (timeout)
1348                 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1349
1350         return r;
1351 }
1352
1353 static int main_pid_good(Service *s) {
1354         assert(s);
1355
1356         /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1357          * don't know */
1358
1359         /* If we know the pid file, then lets just check if it is
1360          * still valid */
1361         if (s->main_pid_known)
1362                 return s->main_pid > 0;
1363
1364         /* We don't know the pid */
1365         return -EAGAIN;
1366 }
1367
1368 static int control_pid_good(Service *s) {
1369         assert(s);
1370
1371         return s->control_pid > 0;
1372 }
1373
1374 static int cgroup_good(Service *s) {
1375         int r;
1376
1377         assert(s);
1378
1379         if (s->valid_no_process)
1380                 return -EAGAIN;
1381
1382         if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1383                 return r;
1384
1385         return !r;
1386 }
1387
1388 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1389         int r;
1390         assert(s);
1391
1392         if (!success)
1393                 s->failure = true;
1394
1395         if (allow_restart &&
1396             s->allow_restart &&
1397             (s->restart == SERVICE_RESTART_ALWAYS ||
1398              (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1399
1400                 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1401                         goto fail;
1402
1403                 service_set_state(s, SERVICE_AUTO_RESTART);
1404         } else
1405                 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
1406
1407         return;
1408
1409 fail:
1410         log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1411         service_enter_dead(s, false, false);
1412 }
1413
1414 static void service_enter_signal(Service *s, ServiceState state, bool success);
1415
1416 static void service_enter_stop_post(Service *s, bool success) {
1417         int r;
1418         assert(s);
1419
1420         if (!success)
1421                 s->failure = true;
1422
1423         service_unwatch_control_pid(s);
1424
1425         s->control_command_id = SERVICE_EXEC_STOP_POST;
1426         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1427                 if ((r = service_spawn(s,
1428                                        s->control_command,
1429                                        true,
1430                                        false,
1431                                        !s->permissions_start_only,
1432                                        !s->root_directory_start_only,
1433                                        false,
1434                                        &s->control_pid)) < 0)
1435                         goto fail;
1436
1437
1438                 service_set_state(s, SERVICE_STOP_POST);
1439         } else
1440                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1441
1442         return;
1443
1444 fail:
1445         log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->meta.id, strerror(-r));
1446         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1447 }
1448
1449 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1450         int r;
1451         bool sent = false;
1452
1453         assert(s);
1454
1455         if (!success)
1456                 s->failure = true;
1457
1458         if (s->kill_mode != KILL_NONE) {
1459                 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1460
1461                 if (s->kill_mode == KILL_CONTROL_GROUP) {
1462
1463                         if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1464                                 if (r != -EAGAIN && r != -ESRCH)
1465                                         goto fail;
1466                         } else
1467                                 sent = true;
1468                 }
1469
1470                 if (!sent) {
1471                         r = 0;
1472
1473                         if (s->main_pid > 0) {
1474                                 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1475                                         r = -errno;
1476                                 else
1477                                         sent = true;
1478                         }
1479
1480                         if (s->control_pid > 0) {
1481                                 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1482                                         r = -errno;
1483                                 else
1484                                         sent = true;
1485                         }
1486
1487                         if (r < 0)
1488                                 goto fail;
1489                 }
1490         }
1491
1492         if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1493                 if (s->timeout_usec > 0)
1494                         if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1495                                 goto fail;
1496
1497                 service_set_state(s, state);
1498         } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1499                 service_enter_stop_post(s, true);
1500         else
1501                 service_enter_dead(s, true, true);
1502
1503         return;
1504
1505 fail:
1506         log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1507
1508         if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1509                 service_enter_stop_post(s, false);
1510         else
1511                 service_enter_dead(s, false, true);
1512 }
1513
1514 static void service_enter_stop(Service *s, bool success) {
1515         int r;
1516
1517         assert(s);
1518
1519         if (!success)
1520                 s->failure = true;
1521
1522         service_unwatch_control_pid(s);
1523
1524         s->control_command_id = SERVICE_EXEC_STOP;
1525         if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1526                 if ((r = service_spawn(s,
1527                                        s->control_command,
1528                                        true,
1529                                        false,
1530                                        !s->permissions_start_only,
1531                                        !s->root_directory_start_only,
1532                                        false,
1533                                        &s->control_pid)) < 0)
1534                         goto fail;
1535
1536                 service_set_state(s, SERVICE_STOP);
1537         } else
1538                 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1539
1540         return;
1541
1542 fail:
1543         log_warning("%s failed to run 'stop' task: %s", UNIT(s)->meta.id, strerror(-r));
1544         service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1545 }
1546
1547 static void service_enter_running(Service *s, bool success) {
1548         assert(s);
1549
1550         if (!success)
1551                 s->failure = true;
1552
1553         if (main_pid_good(s) != 0 &&
1554             cgroup_good(s) != 0 &&
1555             (s->bus_name_good || s->type != SERVICE_DBUS))
1556                 service_set_state(s, SERVICE_RUNNING);
1557         else if (s->valid_no_process)
1558                 service_set_state(s, SERVICE_EXITED);
1559         else
1560                 service_enter_stop(s, true);
1561 }
1562
1563 static void service_enter_start_post(Service *s) {
1564         int r;
1565         assert(s);
1566
1567         service_unwatch_control_pid(s);
1568
1569         s->control_command_id = SERVICE_EXEC_START_POST;
1570         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1571                 if ((r = service_spawn(s,
1572                                        s->control_command,
1573                                        true,
1574                                        false,
1575                                        !s->permissions_start_only,
1576                                        !s->root_directory_start_only,
1577                                        false,
1578                                        &s->control_pid)) < 0)
1579                         goto fail;
1580
1581                 service_set_state(s, SERVICE_START_POST);
1582         } else
1583                 service_enter_running(s, true);
1584
1585         return;
1586
1587 fail:
1588         log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->meta.id, strerror(-r));
1589         service_enter_stop(s, false);
1590 }
1591
1592 static void service_enter_start(Service *s) {
1593         pid_t pid;
1594         int r;
1595
1596         assert(s);
1597
1598         assert(s->exec_command[SERVICE_EXEC_START]);
1599         assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1600
1601         if (s->type == SERVICE_FORKING)
1602                 service_unwatch_control_pid(s);
1603         else
1604                 service_unwatch_main_pid(s);
1605
1606         if ((r = service_spawn(s,
1607                                s->exec_command[SERVICE_EXEC_START],
1608                                s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1609                                true,
1610                                true,
1611                                true,
1612                                s->notify_access != NOTIFY_NONE,
1613                                &pid)) < 0)
1614                 goto fail;
1615
1616         if (s->type == SERVICE_SIMPLE) {
1617                 /* For simple services we immediately start
1618                  * the START_POST binaries. */
1619
1620                 service_set_main_pid(s, pid);
1621                 service_enter_start_post(s);
1622
1623         } else  if (s->type == SERVICE_FORKING) {
1624
1625                 /* For forking services we wait until the start
1626                  * process exited. */
1627
1628                 s->control_command_id = SERVICE_EXEC_START;
1629                 s->control_command = s->exec_command[SERVICE_EXEC_START];
1630
1631                 s->control_pid = pid;
1632                 service_set_state(s, SERVICE_START);
1633
1634         } else if (s->type == SERVICE_FINISH ||
1635                    s->type == SERVICE_DBUS ||
1636                    s->type == SERVICE_NOTIFY) {
1637
1638                 /* For finishing services we wait until the start
1639                  * process exited, too, but it is our main process. */
1640
1641                 /* For D-Bus services we know the main pid right away,
1642                  * but wait for the bus name to appear on the
1643                  * bus. Notify services are similar. */
1644
1645                 service_set_main_pid(s, pid);
1646                 service_set_state(s, SERVICE_START);
1647         } else
1648                 assert_not_reached("Unknown service type");
1649
1650         return;
1651
1652 fail:
1653         log_warning("%s failed to run 'start' task: %s", UNIT(s)->meta.id, strerror(-r));
1654         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1655 }
1656
1657 static void service_enter_start_pre(Service *s) {
1658         int r;
1659
1660         assert(s);
1661
1662         service_unwatch_control_pid(s);
1663
1664         s->control_command_id = SERVICE_EXEC_START_PRE;
1665         if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1666                 if ((r = service_spawn(s,
1667                                        s->control_command,
1668                                        true,
1669                                        false,
1670                                        !s->permissions_start_only,
1671                                        !s->root_directory_start_only,
1672                                        false,
1673                                        &s->control_pid)) < 0)
1674                         goto fail;
1675
1676                 service_set_state(s, SERVICE_START_PRE);
1677         } else
1678                 service_enter_start(s);
1679
1680         return;
1681
1682 fail:
1683         log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->meta.id, strerror(-r));
1684         service_enter_dead(s, false, true);
1685 }
1686
1687 static void service_enter_restart(Service *s) {
1688         int r;
1689         assert(s);
1690
1691         service_enter_dead(s, true, false);
1692
1693         if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1694                 goto fail;
1695
1696         log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1697         return;
1698
1699 fail:
1700
1701         log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1702         service_enter_dead(s, false, false);
1703 }
1704
1705 static void service_enter_reload(Service *s) {
1706         int r;
1707
1708         assert(s);
1709
1710         service_unwatch_control_pid(s);
1711
1712         s->control_command_id = SERVICE_EXEC_RELOAD;
1713         if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1714                 if ((r = service_spawn(s,
1715                                        s->control_command,
1716                                        true,
1717                                        false,
1718                                        !s->permissions_start_only,
1719                                        !s->root_directory_start_only,
1720                                        false,
1721                                        &s->control_pid)) < 0)
1722                         goto fail;
1723
1724                 service_set_state(s, SERVICE_RELOAD);
1725         } else
1726                 service_enter_running(s, true);
1727
1728         return;
1729
1730 fail:
1731         log_warning("%s failed to run 'reload' task: %s", UNIT(s)->meta.id, strerror(-r));
1732         service_enter_stop(s, false);
1733 }
1734
1735 static void service_run_next(Service *s, bool success) {
1736         int r;
1737
1738         assert(s);
1739         assert(s->control_command);
1740         assert(s->control_command->command_next);
1741
1742         if (!success)
1743                 s->failure = true;
1744
1745         s->control_command = s->control_command->command_next;
1746
1747         service_unwatch_control_pid(s);
1748
1749         if ((r = service_spawn(s,
1750                                s->control_command,
1751                                true,
1752                                false,
1753                                !s->permissions_start_only,
1754                                !s->root_directory_start_only,
1755                                false,
1756                                &s->control_pid)) < 0)
1757                 goto fail;
1758
1759         return;
1760
1761 fail:
1762         log_warning("%s failed to run spawn next task: %s", UNIT(s)->meta.id, strerror(-r));
1763
1764         if (s->state == SERVICE_START_PRE)
1765                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1766         else if (s->state == SERVICE_STOP)
1767                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1768         else if (s->state == SERVICE_STOP_POST)
1769                 service_enter_dead(s, false, true);
1770         else
1771                 service_enter_stop(s, false);
1772 }
1773
1774 static int service_start(Unit *u) {
1775         Service *s = SERVICE(u);
1776
1777         assert(s);
1778
1779         /* We cannot fulfill this request right now, try again later
1780          * please! */
1781         if (s->state == SERVICE_STOP ||
1782             s->state == SERVICE_STOP_SIGTERM ||
1783             s->state == SERVICE_STOP_SIGKILL ||
1784             s->state == SERVICE_STOP_POST ||
1785             s->state == SERVICE_FINAL_SIGTERM ||
1786             s->state == SERVICE_FINAL_SIGKILL)
1787                 return -EAGAIN;
1788
1789         /* Already on it! */
1790         if (s->state == SERVICE_START_PRE ||
1791             s->state == SERVICE_START ||
1792             s->state == SERVICE_START_POST)
1793                 return 0;
1794
1795         assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
1796
1797         /* Make sure we don't enter a busy loop of some kind. */
1798         if (!ratelimit_test(&s->ratelimit)) {
1799                 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1800                 return -ECANCELED;
1801         }
1802
1803         s->failure = false;
1804         s->main_pid_known = false;
1805         s->allow_restart = true;
1806
1807         service_enter_start_pre(s);
1808         return 0;
1809 }
1810
1811 static int service_stop(Unit *u) {
1812         Service *s = SERVICE(u);
1813
1814         assert(s);
1815
1816         /* Cannot do this now */
1817         if (s->state == SERVICE_START_PRE ||
1818             s->state == SERVICE_START ||
1819             s->state == SERVICE_START_POST ||
1820             s->state == SERVICE_RELOAD)
1821                 return -EAGAIN;
1822
1823         /* Already on it */
1824         if (s->state == SERVICE_STOP ||
1825             s->state == SERVICE_STOP_SIGTERM ||
1826             s->state == SERVICE_STOP_SIGKILL ||
1827             s->state == SERVICE_STOP_POST ||
1828             s->state == SERVICE_FINAL_SIGTERM ||
1829             s->state == SERVICE_FINAL_SIGKILL)
1830                 return 0;
1831
1832         if (s->state == SERVICE_AUTO_RESTART) {
1833                 service_set_state(s, SERVICE_DEAD);
1834                 return 0;
1835         }
1836
1837         assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1838
1839         /* This is a user request, so don't do restarts on this
1840          * shutdown. */
1841         s->allow_restart = false;
1842
1843         service_enter_stop(s, true);
1844         return 0;
1845 }
1846
1847 static int service_reload(Unit *u) {
1848         Service *s = SERVICE(u);
1849
1850         assert(s);
1851
1852         assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1853
1854         service_enter_reload(s);
1855         return 0;
1856 }
1857
1858 static bool service_can_reload(Unit *u) {
1859         Service *s = SERVICE(u);
1860
1861         assert(s);
1862
1863         return !!s->exec_command[SERVICE_EXEC_RELOAD];
1864 }
1865
1866 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1867         Service *s = SERVICE(u);
1868
1869         assert(u);
1870         assert(f);
1871         assert(fds);
1872
1873         unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1874         unit_serialize_item(u, f, "failure", yes_no(s->failure));
1875
1876         if (s->control_pid > 0)
1877                 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
1878
1879         if (s->main_pid_known && s->main_pid > 0)
1880                 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
1881
1882         unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1883
1884         /* There's a minor uncleanliness here: if there are multiple
1885          * commands attached here, we will start from the first one
1886          * again */
1887         if (s->control_command_id >= 0)
1888                 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1889
1890         if (s->socket_fd >= 0) {
1891                 int copy;
1892
1893                 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1894                         return copy;
1895
1896                 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1897         }
1898
1899         return 0;
1900 }
1901
1902 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1903         Service *s = SERVICE(u);
1904         int r;
1905
1906         assert(u);
1907         assert(key);
1908         assert(value);
1909         assert(fds);
1910
1911         if (streq(key, "state")) {
1912                 ServiceState state;
1913
1914                 if ((state = service_state_from_string(value)) < 0)
1915                         log_debug("Failed to parse state value %s", value);
1916                 else
1917                         s->deserialized_state = state;
1918         } else if (streq(key, "failure")) {
1919                 int b;
1920
1921                 if ((b = parse_boolean(value)) < 0)
1922                         log_debug("Failed to parse failure value %s", value);
1923                 else
1924                         s->failure = b || s->failure;
1925         } else if (streq(key, "control-pid")) {
1926                 pid_t pid;
1927
1928                 if ((r = parse_pid(value, &pid)) < 0)
1929                         log_debug("Failed to parse control-pid value %s", value);
1930                 else
1931                         s->control_pid = pid;
1932         } else if (streq(key, "main-pid")) {
1933                 pid_t pid;
1934
1935                 if ((r = parse_pid(value, &pid)) < 0)
1936                         log_debug("Failed to parse main-pid value %s", value);
1937                 else
1938                         service_set_main_pid(s, (pid_t) pid);
1939         } else if (streq(key, "main-pid-known")) {
1940                 int b;
1941
1942                 if ((b = parse_boolean(value)) < 0)
1943                         log_debug("Failed to parse main-pid-known value %s", value);
1944                 else
1945                         s->main_pid_known = b;
1946         } else if (streq(key, "control-command")) {
1947                 ServiceExecCommand id;
1948
1949                 if ((id = service_exec_command_from_string(value)) < 0)
1950                         log_debug("Failed to parse exec-command value %s", value);
1951                 else {
1952                         s->control_command_id = id;
1953                         s->control_command = s->exec_command[id];
1954                 }
1955         } else if (streq(key, "socket-fd")) {
1956                 int fd;
1957
1958                 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1959                         log_debug("Failed to parse socket-fd value %s", value);
1960                 else {
1961
1962                         if (s->socket_fd >= 0)
1963                                 close_nointr_nofail(s->socket_fd);
1964                         s->socket_fd = fdset_remove(fds, fd);
1965                 }
1966         } else
1967                 log_debug("Unknown serialization key '%s'", key);
1968
1969         return 0;
1970 }
1971
1972 static UnitActiveState service_active_state(Unit *u) {
1973         assert(u);
1974
1975         return state_translation_table[SERVICE(u)->state];
1976 }
1977
1978 static const char *service_sub_state_to_string(Unit *u) {
1979         assert(u);
1980
1981         return service_state_to_string(SERVICE(u)->state);
1982 }
1983
1984 static bool service_check_gc(Unit *u) {
1985         Service *s = SERVICE(u);
1986
1987         assert(s);
1988
1989         return !!s->sysv_path;
1990 }
1991
1992 static bool service_check_snapshot(Unit *u) {
1993         Service *s = SERVICE(u);
1994
1995         assert(s);
1996
1997         return !s->got_socket_fd;
1998 }
1999
2000 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2001         Service *s = SERVICE(u);
2002         bool success;
2003
2004         assert(s);
2005         assert(pid >= 0);
2006
2007         success = is_clean_exit(code, status);
2008         s->failure = s->failure || !success;
2009
2010         if (s->main_pid == pid) {
2011
2012                 exec_status_fill(&s->main_exec_status, pid, code, status);
2013                 s->main_pid = 0;
2014
2015                 if (s->type != SERVICE_FORKING) {
2016                         assert(s->exec_command[SERVICE_EXEC_START]);
2017                         s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
2018                 }
2019
2020                 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2021
2022                 /* The service exited, so the service is officially
2023                  * gone. */
2024
2025                 switch (s->state) {
2026
2027                 case SERVICE_START_POST:
2028                 case SERVICE_RELOAD:
2029                 case SERVICE_STOP:
2030                         /* Need to wait until the operation is
2031                          * done */
2032                         break;
2033
2034                 case SERVICE_START:
2035                         if (s->type == SERVICE_FINISH) {
2036                                 /* This was our main goal, so let's go on */
2037                                 if (success)
2038                                         service_enter_start_post(s);
2039                                 else
2040                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2041                                 break;
2042                         } else {
2043                                 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2044
2045                                 /* Fall through */
2046                         }
2047
2048                 case SERVICE_RUNNING:
2049                         service_enter_running(s, success);
2050                         break;
2051
2052                 case SERVICE_STOP_SIGTERM:
2053                 case SERVICE_STOP_SIGKILL:
2054
2055                         if (!control_pid_good(s))
2056                                 service_enter_stop_post(s, success);
2057
2058                         /* If there is still a control process, wait for that first */
2059                         break;
2060
2061                 default:
2062                         assert_not_reached("Uh, main process died at wrong time.");
2063                 }
2064
2065         } else if (s->control_pid == pid) {
2066
2067                 if (s->control_command)
2068                         exec_status_fill(&s->control_command->exec_status, pid, code, status);
2069
2070                 s->control_pid = 0;
2071
2072                 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2073
2074                 /* If we are shutting things down anyway we
2075                  * don't care about failing commands. */
2076
2077                 if (s->control_command && s->control_command->command_next && success) {
2078
2079                         /* There is another command to *
2080                          * execute, so let's do that. */
2081
2082                         log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
2083                         service_run_next(s, success);
2084
2085                 } else {
2086                         /* No further commands for this step, so let's
2087                          * figure out what to do next */
2088
2089                         s->control_command = NULL;
2090                         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2091
2092                         log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2093
2094                         switch (s->state) {
2095
2096                         case SERVICE_START_PRE:
2097                                 if (success)
2098                                         service_enter_start(s);
2099                                 else
2100                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2101                                 break;
2102
2103                         case SERVICE_START:
2104                                 assert(s->type == SERVICE_FORKING);
2105
2106                                 /* Let's try to load the pid
2107                                  * file here if we can. We
2108                                  * ignore the return value,
2109                                  * since the PID file might
2110                                  * actually be created by a
2111                                  * START_POST script */
2112
2113                                 if (success) {
2114                                         if (s->pid_file)
2115                                                 service_load_pid_file(s);
2116
2117                                         service_enter_start_post(s);
2118                                 } else
2119                                         service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2120
2121                                 break;
2122
2123                         case SERVICE_START_POST:
2124                                 if (success && s->pid_file && !s->main_pid_known) {
2125                                         int r;
2126
2127                                         /* Hmm, let's see if we can
2128                                          * load the pid now after the
2129                                          * start-post scripts got
2130                                          * executed. */
2131
2132                                         if ((r = service_load_pid_file(s)) < 0)
2133                                                 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
2134                                 }
2135
2136                                 /* Fall through */
2137
2138                         case SERVICE_RELOAD:
2139                                 if (success)
2140                                         service_enter_running(s, true);
2141                                 else
2142                                         service_enter_stop(s, false);
2143
2144                                 break;
2145
2146                         case SERVICE_STOP:
2147                                 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2148                                 break;
2149
2150                         case SERVICE_STOP_SIGTERM:
2151                         case SERVICE_STOP_SIGKILL:
2152                                 if (main_pid_good(s) <= 0)
2153                                         service_enter_stop_post(s, success);
2154
2155                                 /* If there is still a service
2156                                  * process around, wait until
2157                                  * that one quit, too */
2158                                 break;
2159
2160                         case SERVICE_STOP_POST:
2161                         case SERVICE_FINAL_SIGTERM:
2162                         case SERVICE_FINAL_SIGKILL:
2163                                 service_enter_dead(s, success, true);
2164                                 break;
2165
2166                         default:
2167                                 assert_not_reached("Uh, control process died at wrong time.");
2168                         }
2169                 }
2170         }
2171 }
2172
2173 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2174         Service *s = SERVICE(u);
2175
2176         assert(s);
2177         assert(elapsed == 1);
2178
2179         assert(w == &s->timer_watch);
2180
2181         switch (s->state) {
2182
2183         case SERVICE_START_PRE:
2184         case SERVICE_START:
2185                 log_warning("%s operation timed out. Terminating.", u->meta.id);
2186                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2187                 break;
2188
2189         case SERVICE_START_POST:
2190         case SERVICE_RELOAD:
2191                 log_warning("%s operation timed out. Stopping.", u->meta.id);
2192                 service_enter_stop(s, false);
2193                 break;
2194
2195         case SERVICE_STOP:
2196                 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2197                 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2198                 break;
2199
2200         case SERVICE_STOP_SIGTERM:
2201                 log_warning("%s stopping timed out. Killing.", u->meta.id);
2202                 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2203                 break;
2204
2205         case SERVICE_STOP_SIGKILL:
2206                 /* Uh, wie sent a SIGKILL and it is still not gone?
2207                  * Must be something we cannot kill, so let's just be
2208                  * weirded out and continue */
2209
2210                 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2211                 service_enter_stop_post(s, false);
2212                 break;
2213
2214         case SERVICE_STOP_POST:
2215                 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2216                 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2217                 break;
2218
2219         case SERVICE_FINAL_SIGTERM:
2220                 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2221                 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2222                 break;
2223
2224         case SERVICE_FINAL_SIGKILL:
2225                 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
2226                 service_enter_dead(s, false, true);
2227                 break;
2228
2229         case SERVICE_AUTO_RESTART:
2230                 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2231                 service_enter_restart(s);
2232                 break;
2233
2234         default:
2235                 assert_not_reached("Timeout at wrong time.");
2236         }
2237 }
2238
2239 static void service_cgroup_notify_event(Unit *u) {
2240         Service *s = SERVICE(u);
2241
2242         assert(u);
2243
2244         log_debug("%s: cgroup is empty", u->meta.id);
2245
2246         switch (s->state) {
2247
2248                 /* Waiting for SIGCHLD is usually more interesting,
2249                  * because it includes return codes/signals. Which is
2250                  * why we ignore the cgroup events for most cases,
2251                  * except when we don't know pid which to expect the
2252                  * SIGCHLD for. */
2253
2254         case SERVICE_RUNNING:
2255                 service_enter_running(s, true);
2256                 break;
2257
2258         default:
2259                 ;
2260         }
2261 }
2262
2263 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2264         Service *s = SERVICE(u);
2265         const char *e;
2266
2267         assert(u);
2268
2269         if (s->notify_access == NOTIFY_NONE) {
2270                 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2271                             u->meta.id, (unsigned long) pid);
2272                 return;
2273         }
2274
2275         if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2276                 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2277                             u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2278                 return;
2279         }
2280
2281         log_debug("%s: Got message", u->meta.id);
2282
2283         /* Interpret MAINPID= */
2284         if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2285             (s->state == SERVICE_START ||
2286              s->state == SERVICE_START_POST ||
2287              s->state == SERVICE_RUNNING ||
2288              s->state == SERVICE_RELOAD)) {
2289
2290                 if (parse_pid(e + 8, &pid) < 0)
2291                         log_warning("Failed to parse %s", e);
2292                 else {
2293                         log_debug("%s: got %s", u->meta.id, e);
2294                         service_set_main_pid(s, pid);
2295                 }
2296         }
2297
2298         /* Interpret READY= */
2299         if (s->type == SERVICE_NOTIFY &&
2300             s->state == SERVICE_START &&
2301             strv_find(tags, "READY=1")) {
2302                 log_debug("%s: got READY=1", u->meta.id);
2303
2304                 service_enter_start_post(s);
2305         }
2306
2307         /* Interpret STATUS= */
2308         if ((e = strv_find_prefix(tags, "STATUS="))) {
2309                 char *t;
2310
2311                 if (!(t = strdup(e+7))) {
2312                         log_error("Failed to allocate string.");
2313                         return;
2314                 }
2315
2316                 log_debug("%s: got %s", u->meta.id, e);
2317
2318                 free(s->status_text);
2319                 s->status_text = t;
2320         }
2321 }
2322
2323 static int service_enumerate(Manager *m) {
2324         char **p;
2325         unsigned i;
2326         DIR *d = NULL;
2327         char *path = NULL, *fpath = NULL, *name = NULL;
2328         int r;
2329
2330         assert(m);
2331
2332         STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2333                 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2334                         struct dirent *de;
2335
2336                         free(path);
2337                         path = NULL;
2338                         if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2339                                 r = -ENOMEM;
2340                                 goto finish;
2341                         }
2342
2343                         if (d)
2344                                 closedir(d);
2345
2346                         if (!(d = opendir(path))) {
2347                                 if (errno != ENOENT)
2348                                         log_warning("opendir() failed on %s: %s", path, strerror(errno));
2349
2350                                 continue;
2351                         }
2352
2353                         while ((de = readdir(d))) {
2354                                 Unit *service;
2355                                 int a, b;
2356
2357                                 if (ignore_file(de->d_name))
2358                                         continue;
2359
2360                                 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2361                                         continue;
2362
2363                                 if (strlen(de->d_name) < 4)
2364                                         continue;
2365
2366                                 a = undecchar(de->d_name[1]);
2367                                 b = undecchar(de->d_name[2]);
2368
2369                                 if (a < 0 || b < 0)
2370                                         continue;
2371
2372                                 free(fpath);
2373                                 fpath = NULL;
2374                                 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2375                                         r = -ENOMEM;
2376                                         goto finish;
2377                                 }
2378
2379                                 if (access(fpath, X_OK) < 0) {
2380
2381                                         if (errno != ENOENT)
2382                                                 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2383
2384                                         continue;
2385                                 }
2386
2387                                 free(name);
2388                                 if (!(name = sysv_translate_name(de->d_name + 3))) {
2389                                         r = -ENOMEM;
2390                                         goto finish;
2391                                 }
2392
2393                                 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2394                                         log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2395                                         continue;
2396                                 }
2397
2398                                 if (de->d_name[0] == 'S' &&
2399                                     (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
2400                                         SERVICE(service)->sysv_start_priority =
2401                                                 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2402
2403                                 manager_dispatch_load_queue(m);
2404                                 service = unit_follow_merge(service);
2405
2406                                 if (de->d_name[0] == 'S') {
2407                                         Unit *runlevel_target;
2408
2409                                         if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2410                                                 goto finish;
2411
2412                                         if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2413                                                 goto finish;
2414
2415                                         if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2416                                                 goto finish;
2417
2418                                 } else if (de->d_name[0] == 'K' &&
2419                                            (rcnd_table[i].type == RUNLEVEL_DOWN ||
2420                                             rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2421                                         Unit *shutdown_target;
2422
2423                                         /* We honour K links only for
2424                                          * halt/reboot. For the normal
2425                                          * runlevels we assume the
2426                                          * stop jobs will be
2427                                          * implicitly added by the
2428                                          * core logic. Also, we don't
2429                                          * really distuingish here
2430                                          * between the runlevels 0 and
2431                                          * 6 and just add them to the
2432                                          * special shutdown target. On
2433                                          * SUSE the boot.d/ runlevel
2434                                          * is also used for shutdown,
2435                                          * so we add links for that
2436                                          * too to the shutdown
2437                                          * target.*/
2438
2439                                         if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2440                                                 goto finish;
2441
2442                                         if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2443                                                 goto finish;
2444
2445                                         if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2446                                                 goto finish;
2447                                 }
2448                         }
2449                 }
2450
2451         r = 0;
2452
2453 finish:
2454         free(path);
2455         free(fpath);
2456         free(name);
2457
2458         if (d)
2459                 closedir(d);
2460
2461         return r;
2462 }
2463
2464 static void service_bus_name_owner_change(
2465                 Unit *u,
2466                 const char *name,
2467                 const char *old_owner,
2468                 const char *new_owner) {
2469
2470         Service *s = SERVICE(u);
2471
2472         assert(s);
2473         assert(name);
2474
2475         assert(streq(s->bus_name, name));
2476         assert(old_owner || new_owner);
2477
2478         if (old_owner && new_owner)
2479                 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2480         else if (old_owner)
2481                 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2482         else
2483                 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2484
2485         s->bus_name_good = !!new_owner;
2486
2487         if (s->type == SERVICE_DBUS) {
2488
2489                 /* service_enter_running() will figure out what to
2490                  * do */
2491                 if (s->state == SERVICE_RUNNING)
2492                         service_enter_running(s, true);
2493                 else if (s->state == SERVICE_START && new_owner)
2494                         service_enter_start_post(s);
2495
2496         } else if (new_owner &&
2497                    s->main_pid <= 0 &&
2498                    (s->state == SERVICE_START ||
2499                     s->state == SERVICE_START_POST ||
2500                     s->state == SERVICE_RUNNING ||
2501                     s->state == SERVICE_RELOAD)) {
2502
2503                 /* Try to acquire PID from bus service */
2504                 log_debug("Trying to acquire PID from D-Bus name...");
2505
2506                 bus_query_pid(u->meta.manager, name);
2507         }
2508 }
2509
2510 static void service_bus_query_pid_done(
2511                 Unit *u,
2512                 const char *name,
2513                 pid_t pid) {
2514
2515         Service *s = SERVICE(u);
2516
2517         assert(s);
2518         assert(name);
2519
2520         log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2521
2522         if (s->main_pid <= 0 &&
2523             (s->state == SERVICE_START ||
2524              s->state == SERVICE_START_POST ||
2525              s->state == SERVICE_RUNNING ||
2526              s->state == SERVICE_RELOAD))
2527                 service_set_main_pid(s, pid);
2528 }
2529
2530 int service_set_socket_fd(Service *s, int fd) {
2531         assert(s);
2532         assert(fd >= 0);
2533
2534         /* This is called by the socket code when instantiating a new
2535          * service for a stream socket and the socket needs to be
2536          * configured. */
2537
2538         if (UNIT(s)->meta.load_state != UNIT_LOADED)
2539                 return -EINVAL;
2540
2541         if (s->socket_fd >= 0)
2542                 return -EBUSY;
2543
2544         if (s->state != SERVICE_DEAD)
2545                 return -EAGAIN;
2546
2547         s->socket_fd = fd;
2548         s->got_socket_fd = true;
2549         return 0;
2550 }
2551
2552 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2553         [SERVICE_DEAD] = "dead",
2554         [SERVICE_START_PRE] = "start-pre",
2555         [SERVICE_START] = "start",
2556         [SERVICE_START_POST] = "start-post",
2557         [SERVICE_RUNNING] = "running",
2558         [SERVICE_EXITED] = "exited",
2559         [SERVICE_RELOAD] = "reload",
2560         [SERVICE_STOP] = "stop",
2561         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2562         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2563         [SERVICE_STOP_POST] = "stop-post",
2564         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2565         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2566         [SERVICE_MAINTENANCE] = "maintenance",
2567         [SERVICE_AUTO_RESTART] = "auto-restart",
2568 };
2569
2570 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2571
2572 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2573         [SERVICE_ONCE] = "once",
2574         [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2575         [SERVICE_RESTART_ALWAYS] = "restart-always",
2576 };
2577
2578 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2579
2580 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2581         [SERVICE_FORKING] = "forking",
2582         [SERVICE_SIMPLE] = "simple",
2583         [SERVICE_FINISH] = "finish",
2584         [SERVICE_DBUS] = "dbus",
2585         [SERVICE_NOTIFY] = "notify"
2586 };
2587
2588 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2589
2590 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2591         [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2592         [SERVICE_EXEC_START] = "ExecStart",
2593         [SERVICE_EXEC_START_POST] = "ExecStartPost",
2594         [SERVICE_EXEC_RELOAD] = "ExecReload",
2595         [SERVICE_EXEC_STOP] = "ExecStop",
2596         [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2597 };
2598
2599 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2600
2601 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2602         [NOTIFY_NONE] = "none",
2603         [NOTIFY_MAIN] = "main",
2604         [NOTIFY_ALL] = "all"
2605 };
2606
2607 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2608
2609 const UnitVTable service_vtable = {
2610         .suffix = ".service",
2611
2612         .init = service_init,
2613         .done = service_done,
2614         .load = service_load,
2615
2616         .coldplug = service_coldplug,
2617
2618         .dump = service_dump,
2619
2620         .start = service_start,
2621         .stop = service_stop,
2622         .reload = service_reload,
2623
2624         .can_reload = service_can_reload,
2625
2626         .serialize = service_serialize,
2627         .deserialize_item = service_deserialize_item,
2628
2629         .active_state = service_active_state,
2630         .sub_state_to_string = service_sub_state_to_string,
2631
2632         .check_gc = service_check_gc,
2633         .check_snapshot = service_check_snapshot,
2634
2635         .sigchld_event = service_sigchld_event,
2636         .timer_event = service_timer_event,
2637
2638         .cgroup_notify_empty = service_cgroup_notify_event,
2639         .notify_message = service_notify_message,
2640
2641         .bus_name_owner_change = service_bus_name_owner_change,
2642         .bus_query_pid_done = service_bus_query_pid_done,
2643
2644         .bus_message_handler = bus_service_message_handler,
2645
2646         .enumerate = service_enumerate
2647 };