mount.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 <stdio.h>
  24 #include <mntent.h>
  25 #include <sys/epoll.h>
  26 #include <signal.h>
  27
  28 #include "unit.h"
  29 #include "mount.h"
  30 #include "load-fragment.h"
  31 #include "load-dropin.h"
  32 #include "log.h"
  33 #include "strv.h"
  34 #include "mount-setup.h"
  35 #include "unit-name.h"
  36 #include "mount.h"
  37 #include "dbus-mount.h"
  38
  39 static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
  40         [MOUNT_DEAD] = UNIT_INACTIVE,
  41         [MOUNT_MOUNTING] = UNIT_ACTIVATING,
  42         [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
  43         [MOUNT_MOUNTED] = UNIT_ACTIVE,
  44         [MOUNT_REMOUNTING] = UNIT_ACTIVE_RELOADING,
  45         [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
  46         [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
  47         [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
  48         [MOUNT_REMOUNTING_SIGTERM] = UNIT_ACTIVE_RELOADING,
  49         [MOUNT_REMOUNTING_SIGKILL] = UNIT_ACTIVE_RELOADING,
  50         [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
  51         [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
  52         [MOUNT_MAINTAINANCE] = UNIT_INACTIVE,
  53 };
  54
  55 static void mount_init(Unit *u) {
  56         Mount *m = MOUNT(u);
  57
  58         assert(u);
  59         assert(u->meta.load_state == UNIT_STUB);
  60
  61         m->timeout_usec = DEFAULT_TIMEOUT_USEC;
  62         exec_context_init(&m->exec_context);
  63
  64         /* We need to make sure that /bin/mount is always called in
  65          * the same process group as us, so that the autofs kernel
  66          * side doesn't send us another mount request while we are
  67          * already trying to comply its last one. */
  68         m->exec_context.no_setsid = true;
  69
  70         m->timer_watch.type = WATCH_INVALID;
  71
  72         m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
  73 }
  74
  75 static void mount_unwatch_control_pid(Mount *m) {
  76         assert(m);
  77
  78         if (m->control_pid <= 0)
  79                 return;
  80
  81         unit_unwatch_pid(UNIT(m), m->control_pid);
  82         m->control_pid = 0;
  83 }
  84
  85 static void mount_parameters_done(MountParameters *p) {
  86         assert(p);
  87
  88         free(p->what);
  89         free(p->options);
  90         free(p->fstype);
  91
  92         p->what = p->options = p->fstype = NULL;
  93 }
  94
  95 static void mount_done(Unit *u) {
  96         Mount *m = MOUNT(u);
  97
  98         assert(m);
  99
 100         free(m->where);
 101         m->where = NULL;
 102
 103         mount_parameters_done(&m->parameters_etc_fstab);
 104         mount_parameters_done(&m->parameters_proc_self_mountinfo);
 105         mount_parameters_done(&m->parameters_fragment);
 106
 107         exec_context_done(&m->exec_context);
 108         exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
 109         m->control_command = NULL;
 110
 111         mount_unwatch_control_pid(m);
 112
 113         unit_unwatch_timer(u, &m->timer_watch);
 114 }
 115
 116 static int mount_add_mount_links(Mount *m) {
 117         Meta *other;
 118         int r;
 119
 120         assert(m);
 121
 122         /* Adds in links to other mount points that might lie below or
 123          * above us in the hierarchy */
 124
 125         LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
 126                 Mount *n = (Mount*) other;
 127
 128                 if (n == m)
 129                         continue;
 130
 131                 if (n->meta.load_state != UNIT_LOADED)
 132                         continue;
 133
 134                 if (path_startswith(m->where, n->where)) {
 135
 136                         if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
 137                                 return r;
 138
 139                         if (n->from_etc_fstab || n->from_fragment)
 140                                 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
 141                                         return r;
 142
 143                 } else if (path_startswith(n->where, m->where)) {
 144
 145                         if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
 146                                 return r;
 147
 148                         if (m->from_etc_fstab || m->from_fragment)
 149                                 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
 150                                         return r;
 151                 }
 152         }
 153
 154         return 0;
 155 }
 156
 157 static int mount_add_swap_links(Mount *m) {
 158         Meta *other;
 159         int r;
 160
 161         assert(m);
 162
 163         LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SWAP])
 164                 if ((r = swap_add_one_mount_link((Swap*) other, m)) < 0)
 165                         return r;
 166
 167         return 0;
 168 }
 169
 170 static int mount_add_automount_links(Mount *m) {
 171         Meta *other;
 172         int r;
 173
 174         assert(m);
 175
 176         LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_AUTOMOUNT])
 177                 if ((r = automount_add_one_mount_link((Automount*) other, m)) < 0)
 178                         return r;
 179
 180         return 0;
 181 }
 182
 183 static int mount_add_socket_links(Mount *m) {
 184         Meta *other;
 185         int r;
 186
 187         assert(m);
 188
 189         LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SOCKET])
 190                 if ((r = socket_add_one_mount_link((Socket*) other, m)) < 0)
 191                         return r;
 192
 193         return 0;
 194 }
 195
 196 static char* mount_test_option(const char *haystack, const char *needle) {
 197         struct mntent me;
 198
 199         assert(needle);
 200
 201         /* Like glibc's hasmntopt(), but works on a string, not a
 202          * struct mntent */
 203
 204         if (!haystack)
 205                 return false;
 206
 207         zero(me);
 208         me.mnt_opts = (char*) haystack;
 209
 210         return hasmntopt(&me, needle);
 211 }
 212
 213 static int mount_add_target_links(Mount *m) {
 214         const char *target;
 215         MountParameters *p;
 216         Unit *tu;
 217         int r;
 218         bool noauto, handle, automount;
 219
 220         assert(m);
 221
 222         if (m->from_fragment)
 223                 p = &m->parameters_fragment;
 224         else if (m->from_etc_fstab)
 225                 p = &m->parameters_etc_fstab;
 226         else
 227                 return 0;
 228
 229         noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
 230         handle = !!mount_test_option(p->options, "comment=systemd.mount");
 231         automount = !!mount_test_option(p->options, "comment=systemd.automount");
 232
 233         if (noauto && !handle && !automount)
 234                 return 0;
 235
 236         if (mount_test_option(p->options, "_netdev") ||
 237             fstype_is_network(p->fstype))
 238                 target = SPECIAL_REMOTE_FS_TARGET;
 239         else
 240                 target = SPECIAL_LOCAL_FS_TARGET;
 241
 242         if ((r = manager_load_unit(UNIT(m)->meta.manager, target, NULL, &tu)) < 0)
 243                 return r;
 244
 245         if (automount) {
 246                 Unit *am;
 247
 248                 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
 249                         return r;
 250
 251                 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
 252                         return r;
 253
 254                 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
 255
 256         } else {
 257
 258                 if (handle)
 259                         if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
 260                                 return r;
 261
 262                 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
 263         }
 264 }
 265
 266 static int mount_verify(Mount *m) {
 267         bool b;
 268         char *e;
 269         assert(m);
 270
 271         if (UNIT(m)->meta.load_state != UNIT_LOADED)
 272                 return 0;
 273
 274         if (!(e = unit_name_from_path(m->where, ".mount")))
 275                 return -ENOMEM;
 276
 277         b = unit_has_name(UNIT(m), e);
 278         free(e);
 279
 280         if (!b) {
 281                 log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->meta.id);
 282                 return -EINVAL;
 283         }
 284
 285         return 0;
 286 }
 287
 288 static int mount_load(Unit *u) {
 289         Mount *m = MOUNT(u);
 290         int r;
 291
 292         assert(u);
 293         assert(u->meta.load_state == UNIT_STUB);
 294
 295         if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
 296                 return r;
 297
 298         /* This is a new unit? Then let's add in some extras */
 299         if (u->meta.load_state == UNIT_LOADED) {
 300                 const char *what = m->parameters_fragment.what;
 301
 302                 if (!what)
 303                         what = m->parameters_etc_fstab.what;
 304
 305                 if (!m->where)
 306                         if (!(m->where = unit_name_to_path(u->meta.id)))
 307                                 return -ENOMEM;
 308
 309                 path_kill_slashes(m->where);
 310
 311                 /* Minor validity checking */
 312                 if ((m->parameters_fragment.options || m->parameters_fragment.fstype) && !m->parameters_fragment.what)
 313                         return -EBADMSG;
 314
 315                 if (m->parameters_fragment.what)
 316                         m->from_fragment = true;
 317
 318                 if ((r = unit_add_node_link(u, what,
 319                                             (u->meta.manager->running_as == MANAGER_INIT ||
 320                                              u->meta.manager->running_as == MANAGER_SYSTEM))) < 0)
 321                         return r;
 322
 323                 if ((r = mount_add_mount_links(m)) < 0)
 324                         return r;
 325
 326                 if ((r = mount_add_socket_links(m)) < 0)
 327                         return r;
 328
 329                 if ((r = mount_add_swap_links(m)) < 0)
 330                         return r;
 331
 332                 if ((r = mount_add_automount_links(m)) < 0)
 333                         return r;
 334
 335                 if ((r = mount_add_target_links(m)) < 0)
 336                         return r;
 337
 338                 if ((r = unit_add_default_cgroup(u)) < 0)
 339                         return r;
 340         }
 341
 342         return mount_verify(m);
 343 }
 344
 345 static int mount_notify_automount(Mount *m, int status) {
 346         Unit *p;
 347         int r;
 348
 349         assert(m);
 350
 351         if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
 352                 return r == -ENOENT ? 0 : r;
 353
 354         return automount_send_ready(AUTOMOUNT(p), status);
 355 }
 356
 357 static void mount_set_state(Mount *m, MountState state) {
 358         MountState old_state;
 359         assert(m);
 360
 361         old_state = m->state;
 362         m->state = state;
 363
 364         if (state != MOUNT_MOUNTING &&
 365             state != MOUNT_MOUNTING_DONE &&
 366             state != MOUNT_REMOUNTING &&
 367             state != MOUNT_UNMOUNTING &&
 368             state != MOUNT_MOUNTING_SIGTERM &&
 369             state != MOUNT_MOUNTING_SIGKILL &&
 370             state != MOUNT_UNMOUNTING_SIGTERM &&
 371             state != MOUNT_UNMOUNTING_SIGKILL &&
 372             state != MOUNT_REMOUNTING_SIGTERM &&
 373             state != MOUNT_REMOUNTING_SIGKILL) {
 374                 unit_unwatch_timer(UNIT(m), &m->timer_watch);
 375                 mount_unwatch_control_pid(m);
 376                 m->control_command = NULL;
 377                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
 378         }
 379
 380         if (state == MOUNT_MOUNTED ||
 381             state == MOUNT_REMOUNTING)
 382                 mount_notify_automount(m, 0);
 383         else if (state == MOUNT_DEAD ||
 384                  state == MOUNT_UNMOUNTING ||
 385                  state == MOUNT_MOUNTING_SIGTERM ||
 386                  state == MOUNT_MOUNTING_SIGKILL ||
 387                  state == MOUNT_REMOUNTING_SIGTERM ||
 388                  state == MOUNT_REMOUNTING_SIGKILL ||
 389                  state == MOUNT_UNMOUNTING_SIGTERM ||
 390                  state == MOUNT_UNMOUNTING_SIGKILL ||
 391                  state == MOUNT_MAINTAINANCE)
 392                 mount_notify_automount(m, -ENODEV);
 393
 394         if (state != old_state)
 395                 log_debug("%s changed %s -> %s",
 396                           UNIT(m)->meta.id,
 397                           mount_state_to_string(old_state),
 398                           mount_state_to_string(state));
 399
 400         unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
 401 }
 402
 403 static int mount_coldplug(Unit *u) {
 404         Mount *m = MOUNT(u);
 405         MountState new_state = MOUNT_DEAD;
 406         int r;
 407
 408         assert(m);
 409         assert(m->state == MOUNT_DEAD);
 410
 411         if (m->deserialized_state != m->state)
 412                 new_state = m->deserialized_state;
 413         else if (m->from_proc_self_mountinfo)
 414                 new_state = MOUNT_MOUNTED;
 415
 416         if (new_state != m->state) {
 417
 418                 if (new_state == MOUNT_MOUNTING ||
 419                     new_state == MOUNT_MOUNTING_DONE ||
 420                     new_state == MOUNT_REMOUNTING ||
 421                     new_state == MOUNT_UNMOUNTING ||
 422                     new_state == MOUNT_MOUNTING_SIGTERM ||
 423                     new_state == MOUNT_MOUNTING_SIGKILL ||
 424                     new_state == MOUNT_UNMOUNTING_SIGTERM ||
 425                     new_state == MOUNT_UNMOUNTING_SIGKILL ||
 426                     new_state == MOUNT_REMOUNTING_SIGTERM ||
 427                     new_state == MOUNT_REMOUNTING_SIGKILL) {
 428
 429                         if (m->control_pid <= 0)
 430                                 return -EBADMSG;
 431
 432                         if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
 433                                 return r;
 434
 435                         if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 436                                 return r;
 437                 }
 438
 439                 mount_set_state(m, new_state);
 440         }
 441
 442         return 0;
 443 }
 444
 445 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
 446         Mount *m = MOUNT(u);
 447         MountParameters *p;
 448
 449         assert(m);
 450         assert(f);
 451
 452         if (m->from_proc_self_mountinfo)
 453                 p = &m->parameters_proc_self_mountinfo;
 454         else if (m->from_fragment)
 455                 p = &m->parameters_fragment;
 456         else
 457                 p = &m->parameters_etc_fstab;
 458
 459         fprintf(f,
 460                 "%sMount State: %s\n"
 461                 "%sWhere: %s\n"
 462                 "%sWhat: %s\n"
 463                 "%sFile System Type: %s\n"
 464                 "%sOptions: %s\n"
 465                 "%sFrom /etc/fstab: %s\n"
 466                 "%sFrom /proc/self/mountinfo: %s\n"
 467                 "%sFrom fragment: %s\n"
 468                 "%sKillMode: %s\n",
 469                 prefix, mount_state_to_string(m->state),
 470                 prefix, m->where,
 471                 prefix, strna(p->what),
 472                 prefix, strna(p->fstype),
 473                 prefix, strna(p->options),
 474                 prefix, yes_no(m->from_etc_fstab),
 475                 prefix, yes_no(m->from_proc_self_mountinfo),
 476                 prefix, yes_no(m->from_fragment),
 477                 prefix, kill_mode_to_string(m->kill_mode));
 478
 479         if (m->control_pid > 0)
 480                 fprintf(f,
 481                         "%sControl PID: %llu\n",
 482                         prefix, (unsigned long long) m->control_pid);
 483
 484         exec_context_dump(&m->exec_context, f, prefix);
 485 }
 486
 487 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
 488         pid_t pid;
 489         int r;
 490
 491         assert(m);
 492         assert(c);
 493         assert(_pid);
 494
 495         if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 496                 goto fail;
 497
 498         if ((r = exec_spawn(c,
 499                             NULL,
 500                             &m->exec_context,
 501                             NULL, 0,
 502                             m->meta.manager->environment,
 503                             true,
 504                             true,
 505                             UNIT(m)->meta.manager->confirm_spawn,
 506                             UNIT(m)->meta.cgroup_bondings,
 507                             &pid)) < 0)
 508                 goto fail;
 509
 510         if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
 511                 /* FIXME: we need to do something here */
 512                 goto fail;
 513
 514         *_pid = pid;
 515
 516         return 0;
 517
 518 fail:
 519         unit_unwatch_timer(UNIT(m), &m->timer_watch);
 520
 521         return r;
 522 }
 523
 524 static void mount_enter_dead(Mount *m, bool success) {
 525         assert(m);
 526
 527         if (!success)
 528                 m->failure = true;
 529
 530         mount_set_state(m, m->failure ? MOUNT_MAINTAINANCE : MOUNT_DEAD);
 531 }
 532
 533 static void mount_enter_mounted(Mount *m, bool success) {
 534         assert(m);
 535
 536         if (!success)
 537                 m->failure = true;
 538
 539         mount_set_state(m, MOUNT_MOUNTED);
 540 }
 541
 542 static void mount_enter_signal(Mount *m, MountState state, bool success) {
 543         int r;
 544         bool sent = false;
 545
 546         assert(m);
 547
 548         if (!success)
 549                 m->failure = true;
 550
 551         if (m->kill_mode != KILL_NONE) {
 552                 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
 553                            state == MOUNT_UNMOUNTING_SIGTERM ||
 554                            state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
 555
 556                 if (m->kill_mode == KILL_CONTROL_GROUP) {
 557
 558                         if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
 559                                 if (r != -EAGAIN && r != -ESRCH)
 560                                         goto fail;
 561                         } else
 562                                 sent = true;
 563                 }
 564
 565                 if (!sent && m->control_pid > 0)
 566                         if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
 567                                 r = -errno;
 568                                 goto fail;
 569                         }
 570         }
 571
 572         if (sent) {
 573                 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 574                         goto fail;
 575
 576                 mount_set_state(m, state);
 577         } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
 578                 mount_enter_mounted(m, true);
 579         else
 580                 mount_enter_dead(m, true);
 581
 582         return;
 583
 584 fail:
 585         log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r));
 586
 587         if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
 588                 mount_enter_mounted(m, false);
 589         else
 590                 mount_enter_dead(m, false);
 591 }
 592
 593 static void mount_enter_unmounting(Mount *m, bool success) {
 594         int r;
 595
 596         assert(m);
 597
 598         if (!success)
 599                 m->failure = true;
 600
 601         m->control_command_id = MOUNT_EXEC_UNMOUNT;
 602         m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
 603
 604         if ((r = exec_command_set(
 605                              m->control_command,
 606                              "/bin/umount",
 607                              m->where,
 608                              NULL)) < 0)
 609                 goto fail;
 610
 611         mount_unwatch_control_pid(m);
 612
 613         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 614                 goto fail;
 615
 616         mount_set_state(m, MOUNT_UNMOUNTING);
 617
 618         return;
 619
 620 fail:
 621         log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
 622         mount_enter_mounted(m, false);
 623 }
 624
 625 static void mount_enter_mounting(Mount *m) {
 626         int r;
 627
 628         assert(m);
 629
 630         m->control_command_id = MOUNT_EXEC_MOUNT;
 631         m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
 632
 633         if (m->from_fragment)
 634                 r = exec_command_set(
 635                                 m->control_command,
 636                                 "/bin/mount",
 637                                 m->parameters_fragment.what,
 638                                 m->where,
 639                                 "-t", m->parameters_fragment.fstype,
 640                                 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
 641                                 NULL);
 642         else if (m->from_etc_fstab)
 643                 r = exec_command_set(
 644                                 m->control_command,
 645                                 "/bin/mount",
 646                                 m->where,
 647                                 NULL);
 648         else
 649                 r = -ENOENT;
 650
 651         if (r < 0)
 652                 goto fail;
 653
 654         mount_unwatch_control_pid(m);
 655
 656         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 657                 goto fail;
 658
 659         mount_set_state(m, MOUNT_MOUNTING);
 660
 661         return;
 662
 663 fail:
 664         log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
 665         mount_enter_dead(m, false);
 666 }
 667
 668 static void mount_enter_mounting_done(Mount *m) {
 669         assert(m);
 670
 671         mount_set_state(m, MOUNT_MOUNTING_DONE);
 672 }
 673
 674 static void mount_enter_remounting(Mount *m, bool success) {
 675         int r;
 676
 677         assert(m);
 678
 679         if (!success)
 680                 m->failure = true;
 681
 682         m->control_command_id = MOUNT_EXEC_REMOUNT;
 683         m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
 684
 685         if (m->from_fragment) {
 686                 char *buf = NULL;
 687                 const char *o;
 688
 689                 if (m->parameters_fragment.options) {
 690                         if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
 691                                 r = -ENOMEM;
 692                                 goto fail;
 693                         }
 694
 695                         o = buf;
 696                 } else
 697                         o = "remount";
 698
 699                 r = exec_command_set(
 700                                 m->control_command,
 701                                 "/bin/mount",
 702                                 m->parameters_fragment.what,
 703                                 m->where,
 704                                 "-t", m->parameters_fragment.fstype,
 705                                 "-o", o,
 706                                 NULL);
 707
 708                 free(buf);
 709         } else if (m->from_etc_fstab)
 710                 r = exec_command_set(
 711                                 m->control_command,
 712                                 "/bin/mount",
 713                                 m->where,
 714                                 "-o", "remount",
 715                                 NULL);
 716         else
 717                 r = -ENOENT;
 718
 719         if (r < 0) {
 720                 r = -ENOMEM;
 721                 goto fail;
 722         }
 723
 724         mount_unwatch_control_pid(m);
 725
 726         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 727                 goto fail;
 728
 729         mount_set_state(m, MOUNT_REMOUNTING);
 730
 731         return;
 732
 733 fail:
 734         mount_enter_mounted(m, false);
 735 }
 736
 737 static int mount_start(Unit *u) {
 738         Mount *m = MOUNT(u);
 739
 740         assert(m);
 741
 742         /* We cannot fulfill this request right now, try again later
 743          * please! */
 744         if (m->state == MOUNT_UNMOUNTING ||
 745             m->state == MOUNT_UNMOUNTING_SIGTERM ||
 746             m->state == MOUNT_UNMOUNTING_SIGKILL)
 747                 return -EAGAIN;
 748
 749         /* Already on it! */
 750         if (m->state == MOUNT_MOUNTING ||
 751             m->state == MOUNT_MOUNTING_SIGTERM ||
 752             m->state == MOUNT_MOUNTING_SIGKILL)
 753                 return 0;
 754
 755         assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTAINANCE);
 756
 757         m->failure = false;
 758         mount_enter_mounting(m);
 759         return 0;
 760 }
 761
 762 static int mount_stop(Unit *u) {
 763         Mount *m = MOUNT(u);
 764
 765         assert(m);
 766
 767         /* Cann't do this right now. */
 768         if (m->state == MOUNT_MOUNTING ||
 769             m->state == MOUNT_MOUNTING_DONE ||
 770             m->state == MOUNT_MOUNTING_SIGTERM ||
 771             m->state == MOUNT_MOUNTING_SIGKILL ||
 772             m->state == MOUNT_REMOUNTING ||
 773             m->state == MOUNT_REMOUNTING_SIGTERM ||
 774             m->state == MOUNT_REMOUNTING_SIGKILL)
 775                 return -EAGAIN;
 776
 777         /* Already on it */
 778         if (m->state == MOUNT_UNMOUNTING ||
 779             m->state == MOUNT_UNMOUNTING_SIGKILL ||
 780             m->state == MOUNT_UNMOUNTING_SIGTERM)
 781                 return 0;
 782
 783         assert(m->state == MOUNT_MOUNTED);
 784
 785         mount_enter_unmounting(m, true);
 786         return 0;
 787 }
 788
 789 static int mount_reload(Unit *u) {
 790         Mount *m = MOUNT(u);
 791
 792         assert(m);
 793
 794         if (m->state == MOUNT_MOUNTING_DONE)
 795                 return -EAGAIN;
 796
 797         assert(m->state == MOUNT_MOUNTED);
 798
 799         mount_enter_remounting(m, true);
 800         return 0;
 801 }
 802
 803 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
 804         Mount *m = MOUNT(u);
 805
 806         assert(m);
 807         assert(f);
 808         assert(fds);
 809
 810         unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
 811         unit_serialize_item(u, f, "failure", yes_no(m->failure));
 812
 813         if (m->control_pid > 0)
 814                 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) m->control_pid);
 815
 816         if (m->control_command_id >= 0)
 817                 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
 818
 819         return 0;
 820 }
 821
 822 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
 823         Mount *m = MOUNT(u);
 824         int r;
 825
 826         assert(u);
 827         assert(key);
 828         assert(value);
 829         assert(fds);
 830
 831         if (streq(key, "state")) {
 832                 MountState state;
 833
 834                 if ((state = mount_state_from_string(value)) < 0)
 835                         log_debug("Failed to parse state value %s", value);
 836                 else
 837                         m->deserialized_state = state;
 838         } else if (streq(key, "failure")) {
 839                 int b;
 840
 841                 if ((b = parse_boolean(value)) < 0)
 842                         log_debug("Failed to parse failure value %s", value);
 843                 else
 844                         m->failure = b || m->failure;
 845
 846         } else if (streq(key, "control-pid")) {
 847                 unsigned pid;
 848
 849                 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
 850                         log_debug("Failed to parse control-pid value %s", value);
 851                 else
 852                         m->control_pid = (pid_t) pid;
 853         } else if (streq(key, "control-command")) {
 854                 MountExecCommand id;
 855
 856                 if ((id = mount_exec_command_from_string(value)) < 0)
 857                         log_debug("Failed to parse exec-command value %s", value);
 858                 else {
 859                         m->control_command_id = id;
 860                         m->control_command = m->exec_command + id;
 861                 }
 862
 863         } else
 864                 log_debug("Unknown serialization key '%s'", key);
 865
 866         return 0;
 867 }
 868
 869 static UnitActiveState mount_active_state(Unit *u) {
 870         assert(u);
 871
 872         return state_translation_table[MOUNT(u)->state];
 873 }
 874
 875 static const char *mount_sub_state_to_string(Unit *u) {
 876         assert(u);
 877
 878         return mount_state_to_string(MOUNT(u)->state);
 879 }
 880
 881 static bool mount_check_gc(Unit *u) {
 882         Mount *m = MOUNT(u);
 883
 884         assert(m);
 885
 886         return m->from_etc_fstab || m->from_proc_self_mountinfo;
 887 }
 888
 889 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
 890         Mount *m = MOUNT(u);
 891         bool success;
 892
 893         assert(m);
 894         assert(pid >= 0);
 895
 896         success = code == CLD_EXITED && status == 0;
 897         m->failure = m->failure || !success;
 898
 899         assert(m->control_pid == pid);
 900         m->control_pid = 0;
 901
 902         if (m->control_command) {
 903                 exec_status_fill(&m->control_command->exec_status, pid, code, status);
 904                 m->control_command = NULL;
 905                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
 906         }
 907
 908         log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
 909
 910         /* Note that mount(8) returning and the kernel sending us a
 911          * mount table change event might happen out-of-order. If an
 912          * operation succeed we assume the kernel will follow soon too
 913          * and already change into the resulting state.  If it fails
 914          * we check if the kernel still knows about the mount. and
 915          * change state accordingly. */
 916
 917         switch (m->state) {
 918
 919         case MOUNT_MOUNTING:
 920         case MOUNT_MOUNTING_DONE:
 921         case MOUNT_MOUNTING_SIGKILL:
 922         case MOUNT_MOUNTING_SIGTERM:
 923         case MOUNT_REMOUNTING:
 924         case MOUNT_REMOUNTING_SIGKILL:
 925         case MOUNT_REMOUNTING_SIGTERM:
 926
 927                 if (success && m->from_proc_self_mountinfo)
 928                         mount_enter_mounted(m, true);
 929                 else if (m->from_proc_self_mountinfo)
 930                         mount_enter_mounted(m, false);
 931                 else
 932                         mount_enter_dead(m, false);
 933                 break;
 934
 935         case MOUNT_UNMOUNTING:
 936         case MOUNT_UNMOUNTING_SIGKILL:
 937         case MOUNT_UNMOUNTING_SIGTERM:
 938
 939                 if (success)
 940                         mount_enter_dead(m, true);
 941                 else if (m->from_proc_self_mountinfo)
 942                         mount_enter_mounted(m, false);
 943                 else
 944                         mount_enter_dead(m, false);
 945                 break;
 946
 947         default:
 948                 assert_not_reached("Uh, control process died at wrong time.");
 949         }
 950 }
 951
 952 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
 953         Mount *m = MOUNT(u);
 954
 955         assert(m);
 956         assert(elapsed == 1);
 957         assert(w == &m->timer_watch);
 958
 959         switch (m->state) {
 960
 961         case MOUNT_MOUNTING:
 962         case MOUNT_MOUNTING_DONE:
 963                 log_warning("%s mounting timed out. Stopping.", u->meta.id);
 964                 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
 965                 break;
 966
 967         case MOUNT_REMOUNTING:
 968                 log_warning("%s remounting timed out. Stopping.", u->meta.id);
 969                 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
 970                 break;
 971
 972         case MOUNT_UNMOUNTING:
 973                 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
 974                 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
 975                 break;
 976
 977         case MOUNT_MOUNTING_SIGTERM:
 978                 log_warning("%s mounting timed out. Killing.", u->meta.id);
 979                 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
 980                 break;
 981
 982         case MOUNT_REMOUNTING_SIGTERM:
 983                 log_warning("%s remounting timed out. Killing.", u->meta.id);
 984                 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
 985                 break;
 986
 987         case MOUNT_UNMOUNTING_SIGTERM:
 988                 log_warning("%s unmounting timed out. Killing.", u->meta.id);
 989                 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
 990                 break;
 991
 992         case MOUNT_MOUNTING_SIGKILL:
 993         case MOUNT_REMOUNTING_SIGKILL:
 994         case MOUNT_UNMOUNTING_SIGKILL:
 995                 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
 996
 997                 if (m->from_proc_self_mountinfo)
 998                         mount_enter_mounted(m, false);
 999                 else
1000                         mount_enter_dead(m, false);
1001                 break;
1002
1003         default:
1004                 assert_not_reached("Timeout at wrong time.");
1005         }
1006 }
1007
1008 static int mount_add_one(
1009                 Manager *m,
1010                 const char *what,
1011                 const char *where,
1012                 const char *options,
1013                 const char *fstype,
1014                 bool from_proc_self_mountinfo,
1015                 bool set_flags) {
1016         int r;
1017         Unit *u;
1018         bool delete;
1019         char *e, *w = NULL, *o = NULL, *f = NULL;
1020         MountParameters *mp;
1021
1022         assert(m);
1023         assert(what);
1024         assert(where);
1025         assert(options);
1026         assert(fstype);
1027
1028         assert(!set_flags || from_proc_self_mountinfo);
1029
1030         /* Ignore API mount points. They should never be referenced in
1031          * dependencies ever. */
1032         if (mount_point_is_api(where))
1033                 return 0;
1034
1035         if (streq(fstype, "autofs"))
1036                 return 0;
1037
1038         /* probably some kind of swap, which we don't cover for now */
1039         if (where[0] != '/')
1040                 return 0;
1041
1042         if (!(e = unit_name_from_path(where, ".mount")))
1043                 return -ENOMEM;
1044
1045         if (!(u = manager_get_unit(m, e))) {
1046                 delete = true;
1047
1048                 if (!(u = unit_new(m))) {
1049                         free(e);
1050                         return -ENOMEM;
1051                 }
1052
1053                 r = unit_add_name(u, e);
1054                 free(e);
1055
1056                 if (r < 0)
1057                         goto fail;
1058
1059                 if (!(MOUNT(u)->where = strdup(where))) {
1060                         r = -ENOMEM;
1061                         goto fail;
1062                 }
1063
1064                 if ((r = unit_set_description(u, where)) < 0)
1065                         goto fail;
1066
1067                 unit_add_to_load_queue(u);
1068         } else {
1069                 delete = false;
1070                 free(e);
1071         }
1072
1073         if (!(w = strdup(what)) ||
1074             !(o = strdup(options)) ||
1075             !(f = strdup(fstype))) {
1076                 r = -ENOMEM;
1077                 goto fail;
1078         }
1079
1080         if (from_proc_self_mountinfo) {
1081                 mp = &MOUNT(u)->parameters_proc_self_mountinfo;
1082
1083                 if (set_flags) {
1084                         MOUNT(u)->is_mounted = true;
1085                         MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1086                         MOUNT(u)->just_changed = !streq_ptr(MOUNT(u)->parameters_proc_self_mountinfo.options, o);
1087                 }
1088
1089                 MOUNT(u)->from_proc_self_mountinfo = true;
1090
1091         } else {
1092                 mp = &MOUNT(u)->parameters_etc_fstab;
1093
1094                 MOUNT(u)->from_etc_fstab = true;
1095         }
1096
1097         free(mp->what);
1098         mp->what = w;
1099
1100         free(mp->options);
1101         mp->options = o;
1102
1103         free(mp->fstype);
1104         mp->fstype = f;
1105
1106         unit_add_to_dbus_queue(u);
1107
1108         return 0;
1109
1110 fail:
1111         free(w);
1112         free(o);
1113         free(f);
1114
1115         if (delete && u)
1116                 unit_free(u);
1117
1118         return 0;
1119 }
1120
1121 static char *fstab_node_to_udev_node(char *p) {
1122         char *dn, *t;
1123         int r;
1124
1125         /* FIXME: to follow udev's logic 100% we need to leave valid
1126          * UTF8 chars unescaped */
1127
1128         if (startswith(p, "LABEL=")) {
1129
1130                 if (!(t = xescape(p+6, "/ ")))
1131                         return NULL;
1132
1133                 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1134                 free(t);
1135
1136                 if (r < 0)
1137                         return NULL;
1138
1139                 return dn;
1140         }
1141
1142         if (startswith(p, "UUID=")) {
1143
1144                 if (!(t = xescape(p+5, "/ ")))
1145                         return NULL;
1146
1147                 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1148                 free(t);
1149
1150                 if (r < 0)
1151                         return NULL;
1152
1153                 return dn;
1154         }
1155
1156         return strdup(p);
1157 }
1158
1159 static int mount_find_pri(char *options) {
1160         char *end, *pri;
1161         unsigned long r;
1162
1163         if (!(pri = mount_test_option(options, "pri=")))
1164                 return 0;
1165
1166         pri += 4;
1167
1168         errno = 0;
1169         r = strtoul(pri, &end, 10);
1170
1171         if (errno != 0)
1172                 return -errno;
1173
1174         if (end == pri || (*end != ',' && *end != 0))
1175                 return -EINVAL;
1176
1177         return (int) r;
1178 }
1179
1180 static int mount_load_etc_fstab(Manager *m) {
1181         FILE *f;
1182         int r;
1183         struct mntent* me;
1184
1185         assert(m);
1186
1187         errno = 0;
1188         if (!(f = setmntent("/etc/fstab", "r")))
1189                 return -errno;
1190
1191         while ((me = getmntent(f))) {
1192                 char *where, *what;
1193
1194                 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1195                         r = -ENOMEM;
1196                         goto finish;
1197                 }
1198
1199                 if (!(where = strdup(me->mnt_dir))) {
1200                         free(what);
1201                         r = -ENOMEM;
1202                         goto finish;
1203                 }
1204
1205                 if (what[0] == '/')
1206                         path_kill_slashes(what);
1207
1208                 if (where[0] == '/')
1209                         path_kill_slashes(where);
1210
1211                 if (streq(me->mnt_type, "swap")) {
1212                         int pri;
1213
1214                         if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1215                                 r = pri;
1216                         else
1217                                 r = swap_add_one(m,
1218                                                  what,
1219                                                  !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1220                                                  pri,
1221                                                  false);
1222                 } else
1223                         r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1224
1225                 free(what);
1226                 free(where);
1227
1228                 if (r < 0)
1229                         goto finish;
1230         }
1231
1232         r = 0;
1233 finish:
1234
1235         endmntent(f);
1236         return r;
1237 }
1238
1239 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1240         int r;
1241         char *device, *path, *options, *fstype, *d, *p;
1242
1243         assert(m);
1244
1245         rewind(m->proc_self_mountinfo);
1246
1247         for (;;) {
1248                 int k;
1249
1250                 device = path = options = fstype = d = p = NULL;
1251
1252                 if ((k = fscanf(m->proc_self_mountinfo,
1253                                 "%*s "       /* (1) mount id */
1254                                 "%*s "       /* (2) parent id */
1255                                 "%*s "       /* (3) major:minor */
1256                                 "%*s "       /* (4) root */
1257                                 "%ms "       /* (5) mount point */
1258                                 "%ms"        /* (6) mount options */
1259                                 "%*[^-]"     /* (7) optional fields */
1260                                 "- "         /* (8) seperator */
1261                                 "%ms "       /* (9) file system type */
1262                                 "%ms"        /* (10) mount source */
1263                                 "%*[^\n]",   /* some rubbish at the end */
1264                                 &path,
1265                                 &options,
1266                                 &fstype,
1267                                 &device)) != 4) {
1268
1269                         if (k == EOF)
1270                                 break;
1271
1272                         r = -EBADMSG;
1273                         goto finish;
1274                 }
1275
1276                 if (!(d = cunescape(device)) ||
1277                     !(p = cunescape(path))) {
1278                         r = -ENOMEM;
1279                         goto finish;
1280                 }
1281
1282                 if ((r = mount_add_one(m, d, p, options, fstype, true, set_flags)) < 0)
1283                         goto finish;
1284
1285                 free(device);
1286                 free(path);
1287                 free(options);
1288                 free(fstype);
1289                 free(d);
1290                 free(p);
1291         }
1292
1293         r = 0;
1294
1295 finish:
1296         free(device);
1297         free(path);
1298         free(options);
1299         free(fstype);
1300         free(d);
1301         free(p);
1302
1303         return r;
1304 }
1305
1306 static void mount_shutdown(Manager *m) {
1307         assert(m);
1308
1309         if (m->proc_self_mountinfo) {
1310                 fclose(m->proc_self_mountinfo);
1311                 m->proc_self_mountinfo = NULL;
1312         }
1313 }
1314
1315 static int mount_enumerate(Manager *m) {
1316         int r;
1317         struct epoll_event ev;
1318         assert(m);
1319
1320         if (!m->proc_self_mountinfo) {
1321                 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1322                         return -errno;
1323
1324                 m->mount_watch.type = WATCH_MOUNT;
1325                 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1326
1327                 zero(ev);
1328                 ev.events = EPOLLERR;
1329                 ev.data.ptr = &m->mount_watch;
1330
1331                 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1332                         return -errno;
1333         }
1334
1335         if ((r = mount_load_etc_fstab(m)) < 0)
1336                 goto fail;
1337
1338         if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1339                 goto fail;
1340
1341         return 0;
1342
1343 fail:
1344         mount_shutdown(m);
1345         return r;
1346 }
1347
1348 void mount_fd_event(Manager *m, int events) {
1349         Meta *meta;
1350         int r;
1351
1352         assert(m);
1353         assert(events == EPOLLERR);
1354
1355         /* The manager calls this for every fd event happening on the
1356          * /proc/self/mountinfo file, which informs us about mounting
1357          * table changes */
1358
1359         if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1360                 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-errno));
1361
1362                 /* Reset flags, just in case, for later calls */
1363                 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1364                         Mount *mount = (Mount*) meta;
1365
1366                         mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1367                 }
1368
1369                 return;
1370         }
1371
1372         manager_dispatch_load_queue(m);
1373
1374         LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1375                 Mount *mount = (Mount*) meta;
1376
1377                 if (!mount->is_mounted) {
1378                         /* This has just been unmounted. */
1379
1380                         mount->from_proc_self_mountinfo = false;
1381
1382                         switch (mount->state) {
1383
1384                         case MOUNT_MOUNTED:
1385                                 mount_enter_dead(mount, true);
1386                                 break;
1387
1388                         default:
1389                                 mount_set_state(mount, mount->state);
1390                                 break;
1391
1392                         }
1393
1394                 } else if (mount->just_mounted || mount->just_changed) {
1395
1396                         /* New or changed entrymount */
1397
1398                         switch (mount->state) {
1399
1400                         case MOUNT_DEAD:
1401                         case MOUNT_MAINTAINANCE:
1402                                 mount_enter_mounted(mount, true);
1403                                 break;
1404
1405                         case MOUNT_MOUNTING:
1406                                 mount_enter_mounting_done(mount);
1407                                 break;
1408
1409                         default:
1410                                 /* Nothing really changed, but let's
1411                                  * issue an notification call
1412                                  * nonetheless, in case somebody is
1413                                  * waiting for this. (e.g. file system
1414                                  * ro/rw remounts.) */
1415                                 mount_set_state(mount, mount->state);
1416                                 break;
1417                         }
1418                 }
1419
1420                 /* Reset the flags for later calls */
1421                 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1422         }
1423 }
1424
1425 int mount_path_is_mounted(Manager *m, const char* path) {
1426         char *t;
1427         int r;
1428
1429         assert(m);
1430         assert(path);
1431
1432         if (path[0] != '/')
1433                 return 1;
1434
1435         if (!(t = strdup(path)))
1436                 return -ENOMEM;
1437
1438         path_kill_slashes(t);
1439
1440         for (;;) {
1441                 char *e, *slash;
1442                 Unit *u;
1443
1444                 if (!(e = unit_name_from_path(t, ".mount"))) {
1445                         r = -ENOMEM;
1446                         goto finish;
1447                 }
1448
1449                 u = manager_get_unit(m, e);
1450                 free(e);
1451
1452                 if (u &&
1453                     (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1454                     MOUNT(u)->state != MOUNT_MOUNTED) {
1455                         r = 0;
1456                         goto finish;
1457                 }
1458
1459                 assert_se(slash = strrchr(t, '/'));
1460
1461                 if (slash == t) {
1462                         r = 1;
1463                         goto finish;
1464                 }
1465
1466                 *slash = 0;
1467         }
1468
1469         r = 1;
1470
1471 finish:
1472         free(t);
1473         return r;
1474 }
1475
1476 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1477         [MOUNT_DEAD] = "dead",
1478         [MOUNT_MOUNTING] = "mounting",
1479         [MOUNT_MOUNTING_DONE] = "mounting-done",
1480         [MOUNT_MOUNTED] = "mounted",
1481         [MOUNT_REMOUNTING] = "remounting",
1482         [MOUNT_UNMOUNTING] = "unmounting",
1483         [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1484         [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1485         [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1486         [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1487         [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1488         [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1489         [MOUNT_MAINTAINANCE] = "maintainance"
1490 };
1491
1492 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1493
1494 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1495         [MOUNT_EXEC_MOUNT] = "ExecMount",
1496         [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1497         [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1498 };
1499
1500 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1501
1502 const UnitVTable mount_vtable = {
1503         .suffix = ".mount",
1504
1505         .no_alias = true,
1506         .no_instances = true,
1507         .no_isolate = true,
1508
1509         .init = mount_init,
1510         .load = mount_load,
1511         .done = mount_done,
1512
1513         .coldplug = mount_coldplug,
1514
1515         .dump = mount_dump,
1516
1517         .start = mount_start,
1518         .stop = mount_stop,
1519         .reload = mount_reload,
1520
1521         .serialize = mount_serialize,
1522         .deserialize_item = mount_deserialize_item,
1523
1524         .active_state = mount_active_state,
1525         .sub_state_to_string = mount_sub_state_to_string,
1526
1527         .check_gc = mount_check_gc,
1528
1529         .sigchld_event = mount_sigchld_event,
1530         .timer_event = mount_timer_event,
1531
1532         .bus_message_handler = bus_mount_message_handler,
1533
1534         .enumerate = mount_enumerate,
1535         .shutdown = mount_shutdown
1536 };