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 (mount_test_option(p->options, "_netdev") ||
 234             fstype_is_network(p->fstype))
 235                 target = SPECIAL_REMOTE_FS_TARGET;
 236         else
 237                 target = SPECIAL_LOCAL_FS_TARGET;
 238
 239         if ((r = manager_load_unit(UNIT(m)->meta.manager, target, NULL, &tu)) < 0)
 240                 return r;
 241
 242         if (automount) {
 243                 Unit *am;
 244
 245                 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
 246                         return r;
 247
 248                 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
 249                         return r;
 250
 251                 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
 252
 253         } else {
 254
 255                 if (!noauto && handle)
 256                         if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
 257                                 return r;
 258
 259                 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
 260         }
 261 }
 262
 263 static int mount_verify(Mount *m) {
 264         bool b;
 265         char *e;
 266         assert(m);
 267
 268         if (UNIT(m)->meta.load_state != UNIT_LOADED)
 269                 return 0;
 270
 271         if (!(e = unit_name_from_path(m->where, ".mount")))
 272                 return -ENOMEM;
 273
 274         b = unit_has_name(UNIT(m), e);
 275         free(e);
 276
 277         if (!b) {
 278                 log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->meta.id);
 279                 return -EINVAL;
 280         }
 281
 282         if (m->meta.fragment_path && !m->parameters_fragment.what) {
 283                 log_error("%s's What setting is missing. Refusing.", UNIT(m)->meta.id);
 284                 return -EBADMSG;
 285         }
 286
 287         return 0;
 288 }
 289
 290 static int mount_load(Unit *u) {
 291         Mount *m = MOUNT(u);
 292         int r;
 293
 294         assert(u);
 295         assert(u->meta.load_state == UNIT_STUB);
 296
 297         if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
 298                 return r;
 299
 300         /* This is a new unit? Then let's add in some extras */
 301         if (u->meta.load_state == UNIT_LOADED) {
 302                 const char *what = NULL;
 303
 304                 if (m->meta.fragment_path)
 305                         m->from_fragment = true;
 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                 if (!m->meta.description)
 314                         if ((r = unit_set_description(u, m->where)) < 0)
 315                                 return r;
 316
 317                 if (m->from_fragment && m->parameters_fragment.what)
 318                         what = m->parameters_fragment.what;
 319                 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
 320                         what = m->parameters_etc_fstab.what;
 321                 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
 322                         what = m->parameters_proc_self_mountinfo.what;
 323
 324                 if (what)
 325                         if ((r = unit_add_node_link(u, what,
 326                                                     (u->meta.manager->running_as == MANAGER_INIT ||
 327                                                      u->meta.manager->running_as == MANAGER_SYSTEM))) < 0)
 328                                 return r;
 329
 330                 if ((r = mount_add_mount_links(m)) < 0)
 331                         return r;
 332
 333                 if ((r = mount_add_socket_links(m)) < 0)
 334                         return r;
 335
 336                 if ((r = mount_add_swap_links(m)) < 0)
 337                         return r;
 338
 339                 if ((r = mount_add_automount_links(m)) < 0)
 340                         return r;
 341
 342                 if ((r = mount_add_target_links(m)) < 0)
 343                         return r;
 344
 345                 if ((r = unit_add_default_cgroup(u)) < 0)
 346                         return r;
 347         }
 348
 349         return mount_verify(m);
 350 }
 351
 352 static int mount_notify_automount(Mount *m, int status) {
 353         Unit *p;
 354         int r;
 355
 356         assert(m);
 357
 358         if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
 359                 return r == -ENOENT ? 0 : r;
 360
 361         return automount_send_ready(AUTOMOUNT(p), status);
 362 }
 363
 364 static void mount_set_state(Mount *m, MountState state) {
 365         MountState old_state;
 366         assert(m);
 367
 368         old_state = m->state;
 369         m->state = state;
 370
 371         if (state != MOUNT_MOUNTING &&
 372             state != MOUNT_MOUNTING_DONE &&
 373             state != MOUNT_REMOUNTING &&
 374             state != MOUNT_UNMOUNTING &&
 375             state != MOUNT_MOUNTING_SIGTERM &&
 376             state != MOUNT_MOUNTING_SIGKILL &&
 377             state != MOUNT_UNMOUNTING_SIGTERM &&
 378             state != MOUNT_UNMOUNTING_SIGKILL &&
 379             state != MOUNT_REMOUNTING_SIGTERM &&
 380             state != MOUNT_REMOUNTING_SIGKILL) {
 381                 unit_unwatch_timer(UNIT(m), &m->timer_watch);
 382                 mount_unwatch_control_pid(m);
 383                 m->control_command = NULL;
 384                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
 385         }
 386
 387         if (state == MOUNT_MOUNTED ||
 388             state == MOUNT_REMOUNTING)
 389                 mount_notify_automount(m, 0);
 390         else if (state == MOUNT_DEAD ||
 391                  state == MOUNT_UNMOUNTING ||
 392                  state == MOUNT_MOUNTING_SIGTERM ||
 393                  state == MOUNT_MOUNTING_SIGKILL ||
 394                  state == MOUNT_REMOUNTING_SIGTERM ||
 395                  state == MOUNT_REMOUNTING_SIGKILL ||
 396                  state == MOUNT_UNMOUNTING_SIGTERM ||
 397                  state == MOUNT_UNMOUNTING_SIGKILL ||
 398                  state == MOUNT_MAINTAINANCE)
 399                 mount_notify_automount(m, -ENODEV);
 400
 401         if (state != old_state)
 402                 log_debug("%s changed %s -> %s",
 403                           UNIT(m)->meta.id,
 404                           mount_state_to_string(old_state),
 405                           mount_state_to_string(state));
 406
 407         unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
 408 }
 409
 410 static int mount_coldplug(Unit *u) {
 411         Mount *m = MOUNT(u);
 412         MountState new_state = MOUNT_DEAD;
 413         int r;
 414
 415         assert(m);
 416         assert(m->state == MOUNT_DEAD);
 417
 418         if (m->deserialized_state != m->state)
 419                 new_state = m->deserialized_state;
 420         else if (m->from_proc_self_mountinfo)
 421                 new_state = MOUNT_MOUNTED;
 422
 423         if (new_state != m->state) {
 424
 425                 if (new_state == MOUNT_MOUNTING ||
 426                     new_state == MOUNT_MOUNTING_DONE ||
 427                     new_state == MOUNT_REMOUNTING ||
 428                     new_state == MOUNT_UNMOUNTING ||
 429                     new_state == MOUNT_MOUNTING_SIGTERM ||
 430                     new_state == MOUNT_MOUNTING_SIGKILL ||
 431                     new_state == MOUNT_UNMOUNTING_SIGTERM ||
 432                     new_state == MOUNT_UNMOUNTING_SIGKILL ||
 433                     new_state == MOUNT_REMOUNTING_SIGTERM ||
 434                     new_state == MOUNT_REMOUNTING_SIGKILL) {
 435
 436                         if (m->control_pid <= 0)
 437                                 return -EBADMSG;
 438
 439                         if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
 440                                 return r;
 441
 442                         if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 443                                 return r;
 444                 }
 445
 446                 mount_set_state(m, new_state);
 447         }
 448
 449         return 0;
 450 }
 451
 452 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
 453         Mount *m = MOUNT(u);
 454         MountParameters *p;
 455
 456         assert(m);
 457         assert(f);
 458
 459         if (m->from_proc_self_mountinfo)
 460                 p = &m->parameters_proc_self_mountinfo;
 461         else if (m->from_fragment)
 462                 p = &m->parameters_fragment;
 463         else
 464                 p = &m->parameters_etc_fstab;
 465
 466         fprintf(f,
 467                 "%sMount State: %s\n"
 468                 "%sWhere: %s\n"
 469                 "%sWhat: %s\n"
 470                 "%sFile System Type: %s\n"
 471                 "%sOptions: %s\n"
 472                 "%sFrom /etc/fstab: %s\n"
 473                 "%sFrom /proc/self/mountinfo: %s\n"
 474                 "%sFrom fragment: %s\n"
 475                 "%sKillMode: %s\n",
 476                 prefix, mount_state_to_string(m->state),
 477                 prefix, m->where,
 478                 prefix, strna(p->what),
 479                 prefix, strna(p->fstype),
 480                 prefix, strna(p->options),
 481                 prefix, yes_no(m->from_etc_fstab),
 482                 prefix, yes_no(m->from_proc_self_mountinfo),
 483                 prefix, yes_no(m->from_fragment),
 484                 prefix, kill_mode_to_string(m->kill_mode));
 485
 486         if (m->control_pid > 0)
 487                 fprintf(f,
 488                         "%sControl PID: %llu\n",
 489                         prefix, (unsigned long long) m->control_pid);
 490
 491         exec_context_dump(&m->exec_context, f, prefix);
 492 }
 493
 494 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
 495         pid_t pid;
 496         int r;
 497
 498         assert(m);
 499         assert(c);
 500         assert(_pid);
 501
 502         if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 503                 goto fail;
 504
 505         if ((r = exec_spawn(c,
 506                             NULL,
 507                             &m->exec_context,
 508                             NULL, 0,
 509                             m->meta.manager->environment,
 510                             true,
 511                             true,
 512                             UNIT(m)->meta.manager->confirm_spawn,
 513                             UNIT(m)->meta.cgroup_bondings,
 514                             &pid)) < 0)
 515                 goto fail;
 516
 517         if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
 518                 /* FIXME: we need to do something here */
 519                 goto fail;
 520
 521         *_pid = pid;
 522
 523         return 0;
 524
 525 fail:
 526         unit_unwatch_timer(UNIT(m), &m->timer_watch);
 527
 528         return r;
 529 }
 530
 531 static void mount_enter_dead(Mount *m, bool success) {
 532         assert(m);
 533
 534         if (!success)
 535                 m->failure = true;
 536
 537         mount_set_state(m, m->failure ? MOUNT_MAINTAINANCE : MOUNT_DEAD);
 538 }
 539
 540 static void mount_enter_mounted(Mount *m, bool success) {
 541         assert(m);
 542
 543         if (!success)
 544                 m->failure = true;
 545
 546         mount_set_state(m, MOUNT_MOUNTED);
 547 }
 548
 549 static void mount_enter_signal(Mount *m, MountState state, bool success) {
 550         int r;
 551         bool sent = false;
 552
 553         assert(m);
 554
 555         if (!success)
 556                 m->failure = true;
 557
 558         if (m->kill_mode != KILL_NONE) {
 559                 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
 560                            state == MOUNT_UNMOUNTING_SIGTERM ||
 561                            state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
 562
 563                 if (m->kill_mode == KILL_CONTROL_GROUP) {
 564
 565                         if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
 566                                 if (r != -EAGAIN && r != -ESRCH)
 567                                         goto fail;
 568                         } else
 569                                 sent = true;
 570                 }
 571
 572                 if (!sent && m->control_pid > 0)
 573                         if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
 574                                 r = -errno;
 575                                 goto fail;
 576                         }
 577         }
 578
 579         if (sent) {
 580                 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 581                         goto fail;
 582
 583                 mount_set_state(m, state);
 584         } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
 585                 mount_enter_mounted(m, true);
 586         else
 587                 mount_enter_dead(m, true);
 588
 589         return;
 590
 591 fail:
 592         log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r));
 593
 594         if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
 595                 mount_enter_mounted(m, false);
 596         else
 597                 mount_enter_dead(m, false);
 598 }
 599
 600 static void mount_enter_unmounting(Mount *m, bool success) {
 601         int r;
 602
 603         assert(m);
 604
 605         if (!success)
 606                 m->failure = true;
 607
 608         m->control_command_id = MOUNT_EXEC_UNMOUNT;
 609         m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
 610
 611         if ((r = exec_command_set(
 612                              m->control_command,
 613                              "/bin/umount",
 614                              m->where,
 615                              NULL)) < 0)
 616                 goto fail;
 617
 618         mount_unwatch_control_pid(m);
 619
 620         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 621                 goto fail;
 622
 623         mount_set_state(m, MOUNT_UNMOUNTING);
 624
 625         return;
 626
 627 fail:
 628         log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
 629         mount_enter_mounted(m, false);
 630 }
 631
 632 static void mount_enter_mounting(Mount *m) {
 633         int r;
 634
 635         assert(m);
 636
 637         m->control_command_id = MOUNT_EXEC_MOUNT;
 638         m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
 639
 640         if (m->from_fragment)
 641                 r = exec_command_set(
 642                                 m->control_command,
 643                                 "/bin/mount",
 644                                 m->parameters_fragment.what,
 645                                 m->where,
 646                                 "-t", m->parameters_fragment.fstype,
 647                                 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
 648                                 NULL);
 649         else if (m->from_etc_fstab)
 650                 r = exec_command_set(
 651                                 m->control_command,
 652                                 "/bin/mount",
 653                                 m->where,
 654                                 NULL);
 655         else
 656                 r = -ENOENT;
 657
 658         if (r < 0)
 659                 goto fail;
 660
 661         mount_unwatch_control_pid(m);
 662
 663         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 664                 goto fail;
 665
 666         mount_set_state(m, MOUNT_MOUNTING);
 667
 668         return;
 669
 670 fail:
 671         log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
 672         mount_enter_dead(m, false);
 673 }
 674
 675 static void mount_enter_mounting_done(Mount *m) {
 676         assert(m);
 677
 678         mount_set_state(m, MOUNT_MOUNTING_DONE);
 679 }
 680
 681 static void mount_enter_remounting(Mount *m, bool success) {
 682         int r;
 683
 684         assert(m);
 685
 686         if (!success)
 687                 m->failure = true;
 688
 689         m->control_command_id = MOUNT_EXEC_REMOUNT;
 690         m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
 691
 692         if (m->from_fragment) {
 693                 char *buf = NULL;
 694                 const char *o;
 695
 696                 if (m->parameters_fragment.options) {
 697                         if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
 698                                 r = -ENOMEM;
 699                                 goto fail;
 700                         }
 701
 702                         o = buf;
 703                 } else
 704                         o = "remount";
 705
 706                 r = exec_command_set(
 707                                 m->control_command,
 708                                 "/bin/mount",
 709                                 m->parameters_fragment.what,
 710                                 m->where,
 711                                 "-t", m->parameters_fragment.fstype,
 712                                 "-o", o,
 713                                 NULL);
 714
 715                 free(buf);
 716         } else if (m->from_etc_fstab)
 717                 r = exec_command_set(
 718                                 m->control_command,
 719                                 "/bin/mount",
 720                                 m->where,
 721                                 "-o", "remount",
 722                                 NULL);
 723         else
 724                 r = -ENOENT;
 725
 726         if (r < 0) {
 727                 r = -ENOMEM;
 728                 goto fail;
 729         }
 730
 731         mount_unwatch_control_pid(m);
 732
 733         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 734                 goto fail;
 735
 736         mount_set_state(m, MOUNT_REMOUNTING);
 737
 738         return;
 739
 740 fail:
 741         mount_enter_mounted(m, false);
 742 }
 743
 744 static int mount_start(Unit *u) {
 745         Mount *m = MOUNT(u);
 746
 747         assert(m);
 748
 749         /* We cannot fulfill this request right now, try again later
 750          * please! */
 751         if (m->state == MOUNT_UNMOUNTING ||
 752             m->state == MOUNT_UNMOUNTING_SIGTERM ||
 753             m->state == MOUNT_UNMOUNTING_SIGKILL)
 754                 return -EAGAIN;
 755
 756         /* Already on it! */
 757         if (m->state == MOUNT_MOUNTING ||
 758             m->state == MOUNT_MOUNTING_SIGTERM ||
 759             m->state == MOUNT_MOUNTING_SIGKILL)
 760                 return 0;
 761
 762         assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTAINANCE);
 763
 764         m->failure = false;
 765         mount_enter_mounting(m);
 766         return 0;
 767 }
 768
 769 static int mount_stop(Unit *u) {
 770         Mount *m = MOUNT(u);
 771
 772         assert(m);
 773
 774         /* Cann't do this right now. */
 775         if (m->state == MOUNT_MOUNTING ||
 776             m->state == MOUNT_MOUNTING_DONE ||
 777             m->state == MOUNT_MOUNTING_SIGTERM ||
 778             m->state == MOUNT_MOUNTING_SIGKILL ||
 779             m->state == MOUNT_REMOUNTING ||
 780             m->state == MOUNT_REMOUNTING_SIGTERM ||
 781             m->state == MOUNT_REMOUNTING_SIGKILL)
 782                 return -EAGAIN;
 783
 784         /* Already on it */
 785         if (m->state == MOUNT_UNMOUNTING ||
 786             m->state == MOUNT_UNMOUNTING_SIGKILL ||
 787             m->state == MOUNT_UNMOUNTING_SIGTERM)
 788                 return 0;
 789
 790         assert(m->state == MOUNT_MOUNTED);
 791
 792         mount_enter_unmounting(m, true);
 793         return 0;
 794 }
 795
 796 static int mount_reload(Unit *u) {
 797         Mount *m = MOUNT(u);
 798
 799         assert(m);
 800
 801         if (m->state == MOUNT_MOUNTING_DONE)
 802                 return -EAGAIN;
 803
 804         assert(m->state == MOUNT_MOUNTED);
 805
 806         mount_enter_remounting(m, true);
 807         return 0;
 808 }
 809
 810 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
 811         Mount *m = MOUNT(u);
 812
 813         assert(m);
 814         assert(f);
 815         assert(fds);
 816
 817         unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
 818         unit_serialize_item(u, f, "failure", yes_no(m->failure));
 819
 820         if (m->control_pid > 0)
 821                 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) m->control_pid);
 822
 823         if (m->control_command_id >= 0)
 824                 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
 825
 826         return 0;
 827 }
 828
 829 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
 830         Mount *m = MOUNT(u);
 831         int r;
 832
 833         assert(u);
 834         assert(key);
 835         assert(value);
 836         assert(fds);
 837
 838         if (streq(key, "state")) {
 839                 MountState state;
 840
 841                 if ((state = mount_state_from_string(value)) < 0)
 842                         log_debug("Failed to parse state value %s", value);
 843                 else
 844                         m->deserialized_state = state;
 845         } else if (streq(key, "failure")) {
 846                 int b;
 847
 848                 if ((b = parse_boolean(value)) < 0)
 849                         log_debug("Failed to parse failure value %s", value);
 850                 else
 851                         m->failure = b || m->failure;
 852
 853         } else if (streq(key, "control-pid")) {
 854                 unsigned pid;
 855
 856                 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
 857                         log_debug("Failed to parse control-pid value %s", value);
 858                 else
 859                         m->control_pid = (pid_t) pid;
 860         } else if (streq(key, "control-command")) {
 861                 MountExecCommand id;
 862
 863                 if ((id = mount_exec_command_from_string(value)) < 0)
 864                         log_debug("Failed to parse exec-command value %s", value);
 865                 else {
 866                         m->control_command_id = id;
 867                         m->control_command = m->exec_command + id;
 868                 }
 869
 870         } else
 871                 log_debug("Unknown serialization key '%s'", key);
 872
 873         return 0;
 874 }
 875
 876 static UnitActiveState mount_active_state(Unit *u) {
 877         assert(u);
 878
 879         return state_translation_table[MOUNT(u)->state];
 880 }
 881
 882 static const char *mount_sub_state_to_string(Unit *u) {
 883         assert(u);
 884
 885         return mount_state_to_string(MOUNT(u)->state);
 886 }
 887
 888 static bool mount_check_gc(Unit *u) {
 889         Mount *m = MOUNT(u);
 890
 891         assert(m);
 892
 893         return m->from_etc_fstab || m->from_proc_self_mountinfo;
 894 }
 895
 896 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
 897         Mount *m = MOUNT(u);
 898         bool success;
 899
 900         assert(m);
 901         assert(pid >= 0);
 902
 903         success = code == CLD_EXITED && status == 0;
 904         m->failure = m->failure || !success;
 905
 906         assert(m->control_pid == pid);
 907         m->control_pid = 0;
 908
 909         if (m->control_command) {
 910                 exec_status_fill(&m->control_command->exec_status, pid, code, status);
 911                 m->control_command = NULL;
 912                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
 913         }
 914
 915         log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
 916
 917         /* Note that mount(8) returning and the kernel sending us a
 918          * mount table change event might happen out-of-order. If an
 919          * operation succeed we assume the kernel will follow soon too
 920          * and already change into the resulting state.  If it fails
 921          * we check if the kernel still knows about the mount. and
 922          * change state accordingly. */
 923
 924         switch (m->state) {
 925
 926         case MOUNT_MOUNTING:
 927         case MOUNT_MOUNTING_DONE:
 928         case MOUNT_MOUNTING_SIGKILL:
 929         case MOUNT_MOUNTING_SIGTERM:
 930         case MOUNT_REMOUNTING:
 931         case MOUNT_REMOUNTING_SIGKILL:
 932         case MOUNT_REMOUNTING_SIGTERM:
 933
 934                 if (success && m->from_proc_self_mountinfo)
 935                         mount_enter_mounted(m, true);
 936                 else if (m->from_proc_self_mountinfo)
 937                         mount_enter_mounted(m, false);
 938                 else
 939                         mount_enter_dead(m, false);
 940                 break;
 941
 942         case MOUNT_UNMOUNTING:
 943         case MOUNT_UNMOUNTING_SIGKILL:
 944         case MOUNT_UNMOUNTING_SIGTERM:
 945
 946                 if (success)
 947                         mount_enter_dead(m, true);
 948                 else if (m->from_proc_self_mountinfo)
 949                         mount_enter_mounted(m, false);
 950                 else
 951                         mount_enter_dead(m, false);
 952                 break;
 953
 954         default:
 955                 assert_not_reached("Uh, control process died at wrong time.");
 956         }
 957 }
 958
 959 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
 960         Mount *m = MOUNT(u);
 961
 962         assert(m);
 963         assert(elapsed == 1);
 964         assert(w == &m->timer_watch);
 965
 966         switch (m->state) {
 967
 968         case MOUNT_MOUNTING:
 969         case MOUNT_MOUNTING_DONE:
 970                 log_warning("%s mounting timed out. Stopping.", u->meta.id);
 971                 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
 972                 break;
 973
 974         case MOUNT_REMOUNTING:
 975                 log_warning("%s remounting timed out. Stopping.", u->meta.id);
 976                 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
 977                 break;
 978
 979         case MOUNT_UNMOUNTING:
 980                 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
 981                 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
 982                 break;
 983
 984         case MOUNT_MOUNTING_SIGTERM:
 985                 log_warning("%s mounting timed out. Killing.", u->meta.id);
 986                 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
 987                 break;
 988
 989         case MOUNT_REMOUNTING_SIGTERM:
 990                 log_warning("%s remounting timed out. Killing.", u->meta.id);
 991                 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
 992                 break;
 993
 994         case MOUNT_UNMOUNTING_SIGTERM:
 995                 log_warning("%s unmounting timed out. Killing.", u->meta.id);
 996                 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
 997                 break;
 998
 999         case MOUNT_MOUNTING_SIGKILL:
1000         case MOUNT_REMOUNTING_SIGKILL:
1001         case MOUNT_UNMOUNTING_SIGKILL:
1002                 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1003
1004                 if (m->from_proc_self_mountinfo)
1005                         mount_enter_mounted(m, false);
1006                 else
1007                         mount_enter_dead(m, false);
1008                 break;
1009
1010         default:
1011                 assert_not_reached("Timeout at wrong time.");
1012         }
1013 }
1014
1015 static int mount_add_one(
1016                 Manager *m,
1017                 const char *what,
1018                 const char *where,
1019                 const char *options,
1020                 const char *fstype,
1021                 bool from_proc_self_mountinfo,
1022                 bool set_flags) {
1023         int r;
1024         Unit *u;
1025         bool delete;
1026         char *e, *w = NULL, *o = NULL, *f = NULL;
1027         MountParameters *p;
1028
1029         assert(m);
1030         assert(what);
1031         assert(where);
1032         assert(options);
1033         assert(fstype);
1034
1035         assert(!set_flags || from_proc_self_mountinfo);
1036
1037         /* Ignore API mount points. They should never be referenced in
1038          * dependencies ever. */
1039         if (mount_point_is_api(where))
1040                 return 0;
1041
1042         if (streq(fstype, "autofs"))
1043                 return 0;
1044
1045         /* probably some kind of swap, ignore */
1046         if (!is_path(where))
1047                 return 0;
1048
1049         if (!(e = unit_name_from_path(where, ".mount")))
1050                 return -ENOMEM;
1051
1052         if (!(u = manager_get_unit(m, e))) {
1053                 delete = true;
1054
1055                 if (!(u = unit_new(m))) {
1056                         free(e);
1057                         return -ENOMEM;
1058                 }
1059
1060                 r = unit_add_name(u, e);
1061                 free(e);
1062
1063                 if (r < 0)
1064                         goto fail;
1065
1066                 if (!(MOUNT(u)->where = strdup(where))) {
1067                         r = -ENOMEM;
1068                         goto fail;
1069                 }
1070
1071                 unit_add_to_load_queue(u);
1072         } else {
1073                 delete = false;
1074                 free(e);
1075         }
1076
1077         if (!(w = strdup(what)) ||
1078             !(o = strdup(options)) ||
1079             !(f = strdup(fstype))) {
1080                 r = -ENOMEM;
1081                 goto fail;
1082         }
1083
1084         if (from_proc_self_mountinfo) {
1085                 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1086
1087                 if (set_flags) {
1088                         MOUNT(u)->is_mounted = true;
1089                         MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1090                         MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1091                 }
1092
1093                 MOUNT(u)->from_proc_self_mountinfo = true;
1094         } else {
1095                 p = &MOUNT(u)->parameters_etc_fstab;
1096                 MOUNT(u)->from_etc_fstab = true;
1097         }
1098
1099         free(p->what);
1100         p->what = w;
1101
1102         free(p->options);
1103         p->options = o;
1104
1105         free(p->fstype);
1106         p->fstype = f;
1107
1108         unit_add_to_dbus_queue(u);
1109
1110         return 0;
1111
1112 fail:
1113         free(w);
1114         free(o);
1115         free(f);
1116
1117         if (delete && u)
1118                 unit_free(u);
1119
1120         return r;
1121 }
1122
1123 static char *fstab_node_to_udev_node(char *p) {
1124         char *dn, *t;
1125         int r;
1126
1127         /* FIXME: to follow udev's logic 100% we need to leave valid
1128          * UTF8 chars unescaped */
1129
1130         if (startswith(p, "LABEL=")) {
1131
1132                 if (!(t = xescape(p+6, "/ ")))
1133                         return NULL;
1134
1135                 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1136                 free(t);
1137
1138                 if (r < 0)
1139                         return NULL;
1140
1141                 return dn;
1142         }
1143
1144         if (startswith(p, "UUID=")) {
1145
1146                 if (!(t = xescape(p+5, "/ ")))
1147                         return NULL;
1148
1149                 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1150                 free(t);
1151
1152                 if (r < 0)
1153                         return NULL;
1154
1155                 return dn;
1156         }
1157
1158         return strdup(p);
1159 }
1160
1161 static int mount_find_pri(char *options) {
1162         char *end, *pri;
1163         unsigned long r;
1164
1165         if (!(pri = mount_test_option(options, "pri=")))
1166                 return 0;
1167
1168         pri += 4;
1169
1170         errno = 0;
1171         r = strtoul(pri, &end, 10);
1172
1173         if (errno != 0)
1174                 return -errno;
1175
1176         if (end == pri || (*end != ',' && *end != 0))
1177                 return -EINVAL;
1178
1179         return (int) r;
1180 }
1181
1182 static int mount_load_etc_fstab(Manager *m) {
1183         FILE *f;
1184         int r;
1185         struct mntent* me;
1186
1187         assert(m);
1188
1189         errno = 0;
1190         if (!(f = setmntent("/etc/fstab", "r")))
1191                 return -errno;
1192
1193         while ((me = getmntent(f))) {
1194                 char *where, *what;
1195
1196                 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1197                         r = -ENOMEM;
1198                         goto finish;
1199                 }
1200
1201                 if (!(where = strdup(me->mnt_dir))) {
1202                         free(what);
1203                         r = -ENOMEM;
1204                         goto finish;
1205                 }
1206
1207                 if (what[0] == '/')
1208                         path_kill_slashes(what);
1209
1210                 if (where[0] == '/')
1211                         path_kill_slashes(where);
1212
1213                 if (streq(me->mnt_type, "swap")) {
1214                         int pri;
1215
1216                         if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1217                                 r = pri;
1218                         else
1219                                 r = swap_add_one(m,
1220                                                  what,
1221                                                  pri,
1222                                                  !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1223                                                  !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1224                                                  false);
1225                 } else
1226                         r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1227
1228                 free(what);
1229                 free(where);
1230
1231                 if (r < 0)
1232                         goto finish;
1233         }
1234
1235         r = 0;
1236 finish:
1237
1238         endmntent(f);
1239         return r;
1240 }
1241
1242 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1243         int r;
1244         char *device, *path, *options, *fstype, *d, *p;
1245
1246         assert(m);
1247
1248         rewind(m->proc_self_mountinfo);
1249
1250         for (;;) {
1251                 int k;
1252
1253                 device = path = options = fstype = d = p = NULL;
1254
1255                 if ((k = fscanf(m->proc_self_mountinfo,
1256                                 "%*s "       /* (1) mount id */
1257                                 "%*s "       /* (2) parent id */
1258                                 "%*s "       /* (3) major:minor */
1259                                 "%*s "       /* (4) root */
1260                                 "%ms "       /* (5) mount point */
1261                                 "%ms"        /* (6) mount options */
1262                                 "%*[^-]"     /* (7) optional fields */
1263                                 "- "         /* (8) seperator */
1264                                 "%ms "       /* (9) file system type */
1265                                 "%ms"        /* (10) mount source */
1266                                 "%*[^\n]",   /* some rubbish at the end */
1267                                 &path,
1268                                 &options,
1269                                 &fstype,
1270                                 &device)) != 4) {
1271
1272                         if (k == EOF)
1273                                 break;
1274
1275                         r = -EBADMSG;
1276                         goto finish;
1277                 }
1278
1279                 if (!(d = cunescape(device)) ||
1280                     !(p = cunescape(path))) {
1281                         r = -ENOMEM;
1282                         goto finish;
1283                 }
1284
1285                 if ((r = mount_add_one(m, d, p, options, fstype, true, set_flags)) < 0)
1286                         goto finish;
1287
1288                 free(device);
1289                 free(path);
1290                 free(options);
1291                 free(fstype);
1292                 free(d);
1293                 free(p);
1294         }
1295
1296         r = 0;
1297
1298 finish:
1299         free(device);
1300         free(path);
1301         free(options);
1302         free(fstype);
1303         free(d);
1304         free(p);
1305
1306         return r;
1307 }
1308
1309 static void mount_shutdown(Manager *m) {
1310         assert(m);
1311
1312         if (m->proc_self_mountinfo) {
1313                 fclose(m->proc_self_mountinfo);
1314                 m->proc_self_mountinfo = NULL;
1315         }
1316 }
1317
1318 static int mount_enumerate(Manager *m) {
1319         int r;
1320         struct epoll_event ev;
1321         assert(m);
1322
1323         if (!m->proc_self_mountinfo) {
1324                 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1325                         return -errno;
1326
1327                 m->mount_watch.type = WATCH_MOUNT;
1328                 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1329
1330                 zero(ev);
1331                 ev.events = EPOLLERR;
1332                 ev.data.ptr = &m->mount_watch;
1333
1334                 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1335                         return -errno;
1336         }
1337
1338         if ((r = mount_load_etc_fstab(m)) < 0)
1339                 goto fail;
1340
1341         if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1342                 goto fail;
1343
1344         return 0;
1345
1346 fail:
1347         mount_shutdown(m);
1348         return r;
1349 }
1350
1351 void mount_fd_event(Manager *m, int events) {
1352         Meta *meta;
1353         int r;
1354
1355         assert(m);
1356         assert(events == EPOLLERR);
1357
1358         /* The manager calls this for every fd event happening on the
1359          * /proc/self/mountinfo file, which informs us about mounting
1360          * table changes */
1361
1362         if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1363                 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
1364
1365                 /* Reset flags, just in case, for later calls */
1366                 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1367                         Mount *mount = (Mount*) meta;
1368
1369                         mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1370                 }
1371
1372                 return;
1373         }
1374
1375         manager_dispatch_load_queue(m);
1376
1377         LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1378                 Mount *mount = (Mount*) meta;
1379
1380                 if (!mount->is_mounted) {
1381                         /* This has just been unmounted. */
1382
1383                         mount->from_proc_self_mountinfo = false;
1384
1385                         switch (mount->state) {
1386
1387                         case MOUNT_MOUNTED:
1388                                 mount_enter_dead(mount, true);
1389                                 break;
1390
1391                         default:
1392                                 mount_set_state(mount, mount->state);
1393                                 break;
1394
1395                         }
1396
1397                 } else if (mount->just_mounted || mount->just_changed) {
1398
1399                         /* New or changed entrymount */
1400
1401                         switch (mount->state) {
1402
1403                         case MOUNT_DEAD:
1404                         case MOUNT_MAINTAINANCE:
1405                                 mount_enter_mounted(mount, true);
1406                                 break;
1407
1408                         case MOUNT_MOUNTING:
1409                                 mount_enter_mounting_done(mount);
1410                                 break;
1411
1412                         default:
1413                                 /* Nothing really changed, but let's
1414                                  * issue an notification call
1415                                  * nonetheless, in case somebody is
1416                                  * waiting for this. (e.g. file system
1417                                  * ro/rw remounts.) */
1418                                 mount_set_state(mount, mount->state);
1419                                 break;
1420                         }
1421                 }
1422
1423                 /* Reset the flags for later calls */
1424                 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1425         }
1426 }
1427
1428 int mount_path_is_mounted(Manager *m, const char* path) {
1429         char *t;
1430         int r;
1431
1432         assert(m);
1433         assert(path);
1434
1435         if (path[0] != '/')
1436                 return 1;
1437
1438         if (!(t = strdup(path)))
1439                 return -ENOMEM;
1440
1441         path_kill_slashes(t);
1442
1443         for (;;) {
1444                 char *e, *slash;
1445                 Unit *u;
1446
1447                 if (!(e = unit_name_from_path(t, ".mount"))) {
1448                         r = -ENOMEM;
1449                         goto finish;
1450                 }
1451
1452                 u = manager_get_unit(m, e);
1453                 free(e);
1454
1455                 if (u &&
1456                     (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1457                     MOUNT(u)->state != MOUNT_MOUNTED) {
1458                         r = 0;
1459                         goto finish;
1460                 }
1461
1462                 assert_se(slash = strrchr(t, '/'));
1463
1464                 if (slash == t) {
1465                         r = 1;
1466                         goto finish;
1467                 }
1468
1469                 *slash = 0;
1470         }
1471
1472         r = 1;
1473
1474 finish:
1475         free(t);
1476         return r;
1477 }
1478
1479 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1480         [MOUNT_DEAD] = "dead",
1481         [MOUNT_MOUNTING] = "mounting",
1482         [MOUNT_MOUNTING_DONE] = "mounting-done",
1483         [MOUNT_MOUNTED] = "mounted",
1484         [MOUNT_REMOUNTING] = "remounting",
1485         [MOUNT_UNMOUNTING] = "unmounting",
1486         [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1487         [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1488         [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1489         [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1490         [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1491         [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1492         [MOUNT_MAINTAINANCE] = "maintainance"
1493 };
1494
1495 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1496
1497 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1498         [MOUNT_EXEC_MOUNT] = "ExecMount",
1499         [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1500         [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1501 };
1502
1503 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1504
1505 const UnitVTable mount_vtable = {
1506         .suffix = ".mount",
1507
1508         .no_alias = true,
1509         .no_instances = true,
1510         .no_isolate = true,
1511
1512         .init = mount_init,
1513         .load = mount_load,
1514         .done = mount_done,
1515
1516         .coldplug = mount_coldplug,
1517
1518         .dump = mount_dump,
1519
1520         .start = mount_start,
1521         .stop = mount_stop,
1522         .reload = mount_reload,
1523
1524         .serialize = mount_serialize,
1525         .deserialize_item = mount_deserialize_item,
1526
1527         .active_state = mount_active_state,
1528         .sub_state_to_string = mount_sub_state_to_string,
1529
1530         .check_gc = mount_check_gc,
1531
1532         .sigchld_event = mount_sigchld_event,
1533         .timer_event = mount_timer_event,
1534
1535         .bus_message_handler = bus_mount_message_handler,
1536
1537         .enumerate = mount_enumerate,
1538         .shutdown = mount_shutdown
1539 };