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