src/automount.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 <limits.h>
  24 #include <sys/mount.h>
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/epoll.h>
  28 #include <sys/stat.h>
  29 #include <linux/auto_fs4.h>
  30 #include <linux/auto_dev-ioctl.h>
  31
  32 #include "unit.h"
  33 #include "automount.h"
  34 #include "load-fragment.h"
  35 #include "load-dropin.h"
  36 #include "unit-name.h"
  37 #include "dbus-automount.h"
  38 #include "bus-errors.h"
  39
  40 static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = {
  41         [AUTOMOUNT_DEAD] = UNIT_INACTIVE,
  42         [AUTOMOUNT_WAITING] = UNIT_ACTIVE,
  43         [AUTOMOUNT_RUNNING] = UNIT_ACTIVE,
  44         [AUTOMOUNT_MAINTENANCE] = UNIT_MAINTENANCE
  45 };
  46
  47 static int open_dev_autofs(Manager *m);
  48
  49 static void automount_init(Unit *u) {
  50         Automount *a = AUTOMOUNT(u);
  51
  52         assert(u);
  53         assert(u->meta.load_state == UNIT_STUB);
  54
  55         a->pipe_watch.fd = a->pipe_fd = -1;
  56         a->pipe_watch.type = WATCH_INVALID;
  57
  58         a->directory_mode = 0755;
  59 }
  60
  61 static void repeat_unmout(const char *path) {
  62         assert(path);
  63
  64         for (;;) {
  65                 /* If there are multiple mounts on a mount point, this
  66                  * removes them all */
  67
  68                 if (umount2(path, MNT_DETACH) >= 0)
  69                         continue;
  70
  71                 if (errno != EINVAL)
  72                         log_error("Failed to unmount: %m");
  73
  74                 break;
  75         }
  76 }
  77
  78 static void unmount_autofs(Automount *a) {
  79         assert(a);
  80
  81         if (a->pipe_fd < 0)
  82                 return;
  83
  84         automount_send_ready(a, -EHOSTDOWN);
  85
  86         unit_unwatch_fd(UNIT(a), &a->pipe_watch);
  87         close_nointr_nofail(a->pipe_fd);
  88         a->pipe_fd = -1;
  89
  90         /* If we reload/reexecute things we keep the mount point
  91          * around */
  92         if (a->where &&
  93             (a->meta.manager->exit_code != MANAGER_RELOAD &&
  94              a->meta.manager->exit_code != MANAGER_REEXECUTE))
  95                 repeat_unmout(a->where);
  96 }
  97
  98 static void automount_done(Unit *u) {
  99         Automount *a = AUTOMOUNT(u);
 100
 101         assert(a);
 102
 103         unmount_autofs(a);
 104         a->mount = NULL;
 105
 106         free(a->where);
 107         a->where = NULL;
 108
 109         set_free(a->tokens);
 110         a->tokens = NULL;
 111 }
 112
 113 int automount_add_one_mount_link(Automount *a, Mount *m) {
 114         int r;
 115
 116         assert(a);
 117         assert(m);
 118
 119         if (a->meta.load_state != UNIT_LOADED ||
 120             m->meta.load_state != UNIT_LOADED)
 121                 return 0;
 122
 123         if (!path_startswith(a->where, m->where))
 124                 return 0;
 125
 126         if (path_equal(a->where, m->where))
 127                 return 0;
 128
 129         if ((r = unit_add_two_dependencies(UNIT(a), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0)
 130                 return r;
 131
 132         return 0;
 133 }
 134
 135 static int automount_add_mount_links(Automount *a) {
 136         Meta *other;
 137         int r;
 138
 139         assert(a);
 140
 141         LIST_FOREACH(units_per_type, other, a->meta.manager->units_per_type[UNIT_MOUNT])
 142                 if ((r = automount_add_one_mount_link(a, (Mount*) other)) < 0)
 143                         return r;
 144
 145         return 0;
 146 }
 147
 148 static int automount_verify(Automount *a) {
 149         bool b;
 150         char *e;
 151         assert(a);
 152
 153         if (a->meta.load_state != UNIT_LOADED)
 154                 return 0;
 155
 156         if (!(e = unit_name_from_path(a->where, ".automount")))
 157                 return -ENOMEM;
 158
 159         b = unit_has_name(UNIT(a), e);
 160         free(e);
 161
 162         if (!b) {
 163                 log_error("%s's Where setting doesn't match unit name. Refusing.", a->meta.id);
 164                 return -EINVAL;
 165         }
 166
 167         return 0;
 168 }
 169
 170 static int automount_load(Unit *u) {
 171         int r;
 172         Automount *a = AUTOMOUNT(u);
 173
 174         assert(u);
 175         assert(u->meta.load_state == UNIT_STUB);
 176
 177         /* Load a .automount file */
 178         if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
 179                 return r;
 180
 181         if (u->meta.load_state == UNIT_LOADED) {
 182
 183                 if (!a->where)
 184                         if (!(a->where = unit_name_to_path(u->meta.id)))
 185                                 return -ENOMEM;
 186
 187                 path_kill_slashes(a->where);
 188
 189                 if ((r = automount_add_mount_links(a)) < 0)
 190                         return r;
 191
 192                 if ((r = unit_load_related_unit(u, ".mount", (Unit**) &a->mount)) < 0)
 193                         return r;
 194
 195                 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(a->mount), true)) < 0)
 196                         return r;
 197         }
 198
 199         return automount_verify(a);
 200 }
 201
 202 static void automount_set_state(Automount *a, AutomountState state) {
 203         AutomountState old_state;
 204         assert(a);
 205
 206         old_state = a->state;
 207         a->state = state;
 208
 209         if (state != AUTOMOUNT_WAITING &&
 210             state != AUTOMOUNT_RUNNING)
 211                 unmount_autofs(a);
 212
 213         if (state != old_state)
 214                 log_debug("%s changed %s -> %s",
 215                           a->meta.id,
 216                           automount_state_to_string(old_state),
 217                           automount_state_to_string(state));
 218
 219         unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state]);
 220 }
 221
 222 static int automount_coldplug(Unit *u) {
 223         Automount *a = AUTOMOUNT(u);
 224         int r;
 225
 226         assert(a);
 227         assert(a->state == AUTOMOUNT_DEAD);
 228
 229         if (a->deserialized_state != a->state) {
 230
 231                 if ((r = open_dev_autofs(u->meta.manager)) < 0)
 232                         return r;
 233
 234                 if (a->deserialized_state == AUTOMOUNT_WAITING ||
 235                     a->deserialized_state == AUTOMOUNT_RUNNING) {
 236
 237                         assert(a->pipe_fd >= 0);
 238
 239                         if ((r = unit_watch_fd(UNIT(a), a->pipe_fd, EPOLLIN, &a->pipe_watch)) < 0)
 240                                 return r;
 241                 }
 242
 243                 automount_set_state(a, a->deserialized_state);
 244         }
 245
 246         return 0;
 247 }
 248
 249 static void automount_dump(Unit *u, FILE *f, const char *prefix) {
 250         Automount *a = AUTOMOUNT(u);
 251
 252         assert(a);
 253
 254         fprintf(f,
 255                 "%sAutomount State: %s\n"
 256                 "%sWhere: %s\n"
 257                 "%sDirectoryMode: %04o\n",
 258                 prefix, automount_state_to_string(a->state),
 259                 prefix, a->where,
 260                 prefix, a->directory_mode);
 261 }
 262
 263 static void automount_enter_dead(Automount *a, bool success) {
 264         assert(a);
 265
 266         if (!success)
 267                 a->failure = true;
 268
 269         automount_set_state(a, a->failure ? AUTOMOUNT_MAINTENANCE : AUTOMOUNT_DEAD);
 270 }
 271
 272 static int open_dev_autofs(Manager *m) {
 273         struct autofs_dev_ioctl param;
 274
 275         assert(m);
 276
 277         if (m->dev_autofs_fd >= 0)
 278                 return m->dev_autofs_fd;
 279
 280         if ((m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY)) < 0) {
 281                 log_error("Failed to open /dev/autofs: %s", strerror(errno));
 282                 return -errno;
 283         }
 284
 285         init_autofs_dev_ioctl(&param);
 286         if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, &param) < 0) {
 287                 close_nointr_nofail(m->dev_autofs_fd);
 288                 m->dev_autofs_fd = -1;
 289                 return -errno;
 290         }
 291
 292         log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor);
 293
 294         return m->dev_autofs_fd;
 295 }
 296
 297 static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) {
 298         struct autofs_dev_ioctl *param;
 299         size_t l;
 300         int r;
 301
 302         assert(dev_autofs_fd >= 0);
 303         assert(where);
 304
 305         l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1;
 306
 307         if (!(param = malloc(l)))
 308                 return -ENOMEM;
 309
 310         init_autofs_dev_ioctl(param);
 311         param->size = l;
 312         param->ioctlfd = -1;
 313         param->openmount.devid = devid;
 314         strcpy(param->path, where);
 315
 316         if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) {
 317                 r = -errno;
 318                 goto finish;
 319         }
 320
 321         if (param->ioctlfd < 0) {
 322                 r = -EIO;
 323                 goto finish;
 324         }
 325
 326         fd_cloexec(param->ioctlfd, true);
 327         r = param->ioctlfd;
 328
 329 finish:
 330         free(param);
 331         return r;
 332 }
 333
 334 static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) {
 335         uint32_t major, minor;
 336         struct autofs_dev_ioctl param;
 337
 338         assert(dev_autofs_fd >= 0);
 339         assert(ioctl_fd >= 0);
 340
 341         init_autofs_dev_ioctl(&param);
 342         param.ioctlfd = ioctl_fd;
 343
 344         if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, &param) < 0)
 345                 return -errno;
 346
 347         major = param.protover.version;
 348
 349         init_autofs_dev_ioctl(&param);
 350         param.ioctlfd = ioctl_fd;
 351
 352         if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, &param) < 0)
 353                 return -errno;
 354
 355         minor = param.protosubver.sub_version;
 356
 357         log_debug("Autofs protocol version %i.%i", major, minor);
 358         return 0;
 359 }
 360
 361 static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, time_t sec) {
 362         struct autofs_dev_ioctl param;
 363
 364         assert(dev_autofs_fd >= 0);
 365         assert(ioctl_fd >= 0);
 366
 367         init_autofs_dev_ioctl(&param);
 368         param.ioctlfd = ioctl_fd;
 369         param.timeout.timeout = sec;
 370
 371         if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, &param) < 0)
 372                 return -errno;
 373
 374         return 0;
 375 }
 376
 377 static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) {
 378         struct autofs_dev_ioctl param;
 379
 380         assert(dev_autofs_fd >= 0);
 381         assert(ioctl_fd >= 0);
 382
 383         init_autofs_dev_ioctl(&param);
 384         param.ioctlfd = ioctl_fd;
 385
 386         if (status) {
 387                 param.fail.token = token;
 388                 param.fail.status = status;
 389         } else
 390                 param.ready.token = token;
 391
 392         if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, &param) < 0)
 393                 return -errno;
 394
 395         return 0;
 396 }
 397
 398 int automount_send_ready(Automount *a, int status) {
 399         int ioctl_fd, r;
 400         unsigned token;
 401
 402         assert(a);
 403         assert(status <= 0);
 404
 405         if (set_isempty(a->tokens))
 406                 return 0;
 407
 408         if ((ioctl_fd = open_ioctl_fd(a->meta.manager->dev_autofs_fd, a->where, a->dev_id)) < 0) {
 409                 r = ioctl_fd;
 410                 goto fail;
 411         }
 412
 413         if (status)
 414                 log_debug("Sending failure: %s", strerror(-status));
 415         else
 416                 log_debug("Sending success.");
 417
 418         /* Autofs thankfully does not hand out 0 as a token */
 419         while ((token = PTR_TO_UINT(set_steal_first(a->tokens)))) {
 420                 int k;
 421
 422                 /* Autofs fun fact II:
 423                  *
 424                  * if you pass a positive status code here, the kernel will
 425                  * freeze! Yay! */
 426
 427                 if ((k = autofs_send_ready(a->meta.manager->dev_autofs_fd,
 428                                            ioctl_fd,
 429                                            token,
 430                                            status)) < 0)
 431                         r = k;
 432         }
 433
 434         r = 0;
 435
 436 fail:
 437         if (ioctl_fd >= 0)
 438                 close_nointr_nofail(ioctl_fd);
 439
 440         return r;
 441 }
 442
 443 static void automount_enter_waiting(Automount *a) {
 444         int p[2] = { -1, -1 };
 445         char name[32], options[128];
 446         bool mounted = false;
 447         int r, ioctl_fd = -1, dev_autofs_fd;
 448         struct stat st;
 449
 450         assert(a);
 451         assert(a->pipe_fd < 0);
 452         assert(a->where);
 453
 454         if (a->tokens)
 455                 set_clear(a->tokens);
 456
 457         if ((dev_autofs_fd = open_dev_autofs(a->meta.manager)) < 0) {
 458                 r = dev_autofs_fd;
 459                 goto fail;
 460         }
 461
 462         /* We knowingly ignore the results of this call */
 463         mkdir_p(a->where, 0555);
 464
 465         if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) {
 466                 r = -errno;
 467                 goto fail;
 468         }
 469
 470         snprintf(options, sizeof(options), "fd=%i,pgrp=%u,minproto=5,maxproto=5,direct", p[1], (unsigned) getpgrp());
 471         char_array_0(options);
 472
 473         snprintf(name, sizeof(name), "systemd-%u", (unsigned) getpid());
 474         char_array_0(name);
 475
 476         if (mount(name, a->where, "autofs", 0, options) < 0) {
 477                 r = -errno;
 478                 goto fail;
 479         }
 480
 481         mounted = true;
 482
 483         close_nointr_nofail(p[1]);
 484         p[1] = -1;
 485
 486         if (stat(a->where, &st) < 0) {
 487                 r = -errno;
 488                 goto fail;
 489         }
 490
 491         if ((ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev)) < 0) {
 492                 r = ioctl_fd;
 493                 goto fail;
 494         }
 495
 496         if ((r = autofs_protocol(dev_autofs_fd, ioctl_fd)) < 0)
 497                 goto fail;
 498
 499         if ((r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, 300)) < 0)
 500                 goto fail;
 501
 502         /* Autofs fun fact:
 503          *
 504          * Unless we close the ioctl fd here, for some weird reason
 505          * the direct mount will not receive events from the
 506          * kernel. */
 507
 508         close_nointr_nofail(ioctl_fd);
 509         ioctl_fd = -1;
 510
 511         if ((r = unit_watch_fd(UNIT(a), p[0], EPOLLIN, &a->pipe_watch)) < 0)
 512                 goto fail;
 513
 514         a->pipe_fd = p[0];
 515         a->dev_id = st.st_dev;
 516
 517         automount_set_state(a, AUTOMOUNT_WAITING);
 518
 519         return;
 520
 521 fail:
 522         assert_se(close_pipe(p) == 0);
 523
 524         if (ioctl_fd >= 0)
 525                 close_nointr_nofail(ioctl_fd);
 526
 527         if (mounted)
 528                 repeat_unmout(a->where);
 529
 530         log_error("Failed to initialize automounter: %s", strerror(-r));
 531         automount_enter_dead(a, false);
 532 }
 533
 534 static void automount_enter_runnning(Automount *a) {
 535         int r;
 536         struct stat st;
 537         DBusError error;
 538
 539         assert(a);
 540         assert(a->mount);
 541
 542         dbus_error_init(&error);
 543
 544         mkdir_p(a->where, a->directory_mode);
 545
 546         /* Before we do anything, let's see if somebody is playing games with us? */
 547         if (lstat(a->where, &st) < 0) {
 548                 log_warning("%s failed stat automount point: %m", a->meta.id);
 549                 goto fail;
 550         }
 551
 552         if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id)
 553                 log_info("%s's automount point already active?", a->meta.id);
 554         else if ((r = manager_add_job(a->meta.manager, JOB_START, UNIT(a->mount), JOB_REPLACE, true, &error, NULL)) < 0) {
 555                 log_warning("%s failed to queue mount startup job: %s", a->meta.id, bus_error(&error, r));
 556                 goto fail;
 557         }
 558
 559         automount_set_state(a, AUTOMOUNT_RUNNING);
 560         return;
 561
 562 fail:
 563         automount_enter_dead(a, false);
 564         dbus_error_free(&error);
 565 }
 566
 567 static int automount_start(Unit *u) {
 568         Automount *a = AUTOMOUNT(u);
 569
 570         assert(a);
 571
 572         assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_MAINTENANCE);
 573
 574         if (path_is_mount_point(a->where)) {
 575                 log_error("Path %s is already a mount point, refusing start for %s", a->where, u->meta.id);
 576                 return -EEXIST;
 577         }
 578
 579         if (a->mount->meta.load_state != UNIT_LOADED)
 580                 return -ENOENT;
 581
 582         a->failure = false;
 583         automount_enter_waiting(a);
 584         return 0;
 585 }
 586
 587 static int automount_stop(Unit *u) {
 588         Automount *a = AUTOMOUNT(u);
 589
 590         assert(a);
 591
 592         assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING);
 593
 594         automount_enter_dead(a, true);
 595         return 0;
 596 }
 597
 598 static int automount_serialize(Unit *u, FILE *f, FDSet *fds) {
 599         Automount *a = AUTOMOUNT(u);
 600         void *p;
 601         Iterator i;
 602
 603         assert(a);
 604         assert(f);
 605         assert(fds);
 606
 607         unit_serialize_item(u, f, "state", automount_state_to_string(a->state));
 608         unit_serialize_item(u, f, "failure", yes_no(a->failure));
 609         unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id);
 610
 611         SET_FOREACH(p, a->tokens, i)
 612                 unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p));
 613
 614         if (a->pipe_fd >= 0) {
 615                 int copy;
 616
 617                 if ((copy = fdset_put_dup(fds, a->pipe_fd)) < 0)
 618                         return copy;
 619
 620                 unit_serialize_item_format(u, f, "pipe-fd", "%i", copy);
 621         }
 622
 623         return 0;
 624 }
 625
 626 static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
 627         Automount *a = AUTOMOUNT(u);
 628         int r;
 629
 630         assert(a);
 631         assert(fds);
 632
 633         if (streq(key, "state")) {
 634                 AutomountState state;
 635
 636                 if ((state = automount_state_from_string(value)) < 0)
 637                         log_debug("Failed to parse state value %s", value);
 638                 else
 639                         a->deserialized_state = state;
 640         } else if (streq(key, "failure")) {
 641                 int b;
 642
 643                 if ((b = parse_boolean(value)) < 0)
 644                         log_debug("Failed to parse failure value %s", value);
 645                 else
 646                         a->failure = b || a->failure;
 647         } else if (streq(key, "dev-id")) {
 648                 unsigned d;
 649
 650                 if (safe_atou(value, &d) < 0)
 651                         log_debug("Failed to parse dev-id value %s", value);
 652                 else
 653                         a->dev_id = (unsigned) d;
 654         } else if (streq(key, "token")) {
 655                 unsigned token;
 656
 657                 if (safe_atou(value, &token) < 0)
 658                         log_debug("Failed to parse token value %s", value);
 659                 else {
 660                         if (!a->tokens)
 661                                 if (!(a->tokens = set_new(trivial_hash_func, trivial_compare_func)))
 662                                         return -ENOMEM;
 663
 664                         if ((r = set_put(a->tokens, UINT_TO_PTR(token))) < 0)
 665                                 return r;
 666                 }
 667         } else if (streq(key, "pipe-fd")) {
 668                 int fd;
 669
 670                 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
 671                         log_debug("Failed to parse pipe-fd value %s", value);
 672                 else {
 673                         if (a->pipe_fd >= 0)
 674                                 close_nointr_nofail(a->pipe_fd);
 675
 676                         a->pipe_fd = fdset_remove(fds, fd);
 677                 }
 678         } else
 679                 log_debug("Unknown serialization key '%s'", key);
 680
 681         return 0;
 682 }
 683
 684 static UnitActiveState automount_active_state(Unit *u) {
 685         assert(u);
 686
 687         return state_translation_table[AUTOMOUNT(u)->state];
 688 }
 689
 690 static const char *automount_sub_state_to_string(Unit *u) {
 691         assert(u);
 692
 693         return automount_state_to_string(AUTOMOUNT(u)->state);
 694 }
 695
 696 static bool automount_check_gc(Unit *u) {
 697         Automount *a = AUTOMOUNT(u);
 698
 699         assert(a);
 700
 701         return UNIT_VTABLE(UNIT(a->mount))->check_gc(UNIT(a->mount));
 702 }
 703
 704 static void automount_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
 705         Automount *a = AUTOMOUNT(u);
 706         union autofs_v5_packet_union packet;
 707         ssize_t l;
 708         int r;
 709
 710         assert(a);
 711         assert(fd == a->pipe_fd);
 712
 713         if (events != EPOLLIN) {
 714                 log_error("Got invalid poll event on pipe.");
 715                 goto fail;
 716         }
 717
 718         if ((l = loop_read(a->pipe_fd, &packet, sizeof(packet), true)) != sizeof(packet)) {
 719                 log_error("Invalid read from pipe: %s", l < 0 ? strerror(-l) : "short read");
 720                 goto fail;
 721         }
 722
 723         switch (packet.hdr.type) {
 724
 725         case autofs_ptype_missing_direct:
 726                 log_debug("Got direct mount request for %s", packet.v5_packet.name);
 727
 728                 if (!a->tokens)
 729                         if (!(a->tokens = set_new(trivial_hash_func, trivial_compare_func))) {
 730                                 log_error("Failed to allocate token set.");
 731                                 goto fail;
 732                         }
 733
 734                 if ((r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token))) < 0) {
 735                         log_error("Failed to remember token: %s", strerror(-r));
 736                         goto fail;
 737                 }
 738
 739                 automount_enter_runnning(a);
 740                 break;
 741
 742         default:
 743                 log_error("Received unknown automount request %i", packet.hdr.type);
 744                 break;
 745         }
 746
 747         return;
 748
 749 fail:
 750         automount_enter_dead(a, false);
 751 }
 752
 753 static void automount_shutdown(Manager *m) {
 754         assert(m);
 755
 756         if (m->dev_autofs_fd >= 0)
 757                 close_nointr_nofail(m->dev_autofs_fd);
 758 }
 759
 760 static const char* const automount_state_table[_AUTOMOUNT_STATE_MAX] = {
 761         [AUTOMOUNT_DEAD] = "dead",
 762         [AUTOMOUNT_WAITING] = "waiting",
 763         [AUTOMOUNT_RUNNING] = "running",
 764         [AUTOMOUNT_MAINTENANCE] = "maintenance"
 765 };
 766
 767 DEFINE_STRING_TABLE_LOOKUP(automount_state, AutomountState);
 768
 769 const UnitVTable automount_vtable = {
 770         .suffix = ".automount",
 771
 772         .no_alias = true,
 773         .no_instances = true,
 774
 775         .init = automount_init,
 776         .load = automount_load,
 777         .done = automount_done,
 778
 779         .coldplug = automount_coldplug,
 780
 781         .dump = automount_dump,
 782
 783         .start = automount_start,
 784         .stop = automount_stop,
 785
 786         .serialize = automount_serialize,
 787         .deserialize_item = automount_deserialize_item,
 788
 789         .active_state = automount_active_state,
 790         .sub_state_to_string = automount_sub_state_to_string,
 791
 792         .check_gc = automount_check_gc,
 793
 794         .fd_event = automount_fd_event,
 795
 796         .bus_message_handler = bus_automount_message_handler,
 797
 798         .shutdown = automount_shutdown
 799 };