src/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, user;
 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         user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
 231         handle = !!mount_test_option(p->options, "comment=systemd.mount");
 232         automount = !!mount_test_option(p->options, "comment=systemd.automount");
 233
 234         if (mount_test_option(p->options, "_netdev") ||
 235             fstype_is_network(p->fstype))
 236                 target = SPECIAL_REMOTE_FS_TARGET;
 237         else
 238                 target = SPECIAL_LOCAL_FS_TARGET;
 239
 240         if ((r = manager_load_unit(UNIT(m)->meta.manager, target, NULL, &tu)) < 0)
 241                 return r;
 242
 243         if (automount && m->meta.manager->running_as != MANAGER_SESSION) {
 244                 Unit *am;
 245
 246                 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
 247                         return r;
 248
 249                 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
 250                         return r;
 251
 252                 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
 253
 254         } else {
 255
 256                 if (!noauto && handle)
 257                         if (user || m->meta.manager->running_as != MANAGER_SESSION)
 258                                 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
 259                                         return r;
 260
 261                 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
 262         }
 263 }
 264
 265 static int mount_verify(Mount *m) {
 266         bool b;
 267         char *e;
 268         assert(m);
 269
 270         if (UNIT(m)->meta.load_state != UNIT_LOADED)
 271                 return 0;
 272
 273         if (!(e = unit_name_from_path(m->where, ".mount")))
 274                 return -ENOMEM;
 275
 276         b = unit_has_name(UNIT(m), e);
 277         free(e);
 278
 279         if (!b) {
 280                 log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->meta.id);
 281                 return -EINVAL;
 282         }
 283
 284         if (m->meta.fragment_path && !m->parameters_fragment.what) {
 285                 log_error("%s's What setting is missing. Refusing.", UNIT(m)->meta.id);
 286                 return -EBADMSG;
 287         }
 288
 289         return 0;
 290 }
 291
 292 static int mount_load(Unit *u) {
 293         Mount *m = MOUNT(u);
 294         int r;
 295
 296         assert(u);
 297         assert(u->meta.load_state == UNIT_STUB);
 298
 299         if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
 300                 return r;
 301
 302         /* This is a new unit? Then let's add in some extras */
 303         if (u->meta.load_state == UNIT_LOADED) {
 304                 const char *what = NULL;
 305
 306                 if (m->meta.fragment_path)
 307                         m->from_fragment = true;
 308
 309                 if (!m->where)
 310                         if (!(m->where = unit_name_to_path(u->meta.id)))
 311                                 return -ENOMEM;
 312
 313                 path_kill_slashes(m->where);
 314
 315                 if (!m->meta.description)
 316                         if ((r = unit_set_description(u, m->where)) < 0)
 317                                 return r;
 318
 319                 if (m->from_fragment && m->parameters_fragment.what)
 320                         what = m->parameters_fragment.what;
 321                 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
 322                         what = m->parameters_etc_fstab.what;
 323                 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
 324                         what = m->parameters_proc_self_mountinfo.what;
 325
 326                 if (what)
 327                         if ((r = unit_add_node_link(u, what,
 328                                                     (u->meta.manager->running_as == MANAGER_INIT ||
 329                                                      u->meta.manager->running_as == MANAGER_SYSTEM))) < 0)
 330                                 return r;
 331
 332                 if ((r = mount_add_mount_links(m)) < 0)
 333                         return r;
 334
 335                 if ((r = mount_add_socket_links(m)) < 0)
 336                         return r;
 337
 338                 if ((r = mount_add_swap_links(m)) < 0)
 339                         return r;
 340
 341                 if ((r = mount_add_automount_links(m)) < 0)
 342                         return r;
 343
 344                 if ((r = mount_add_target_links(m)) < 0)
 345                         return r;
 346
 347                 if ((r = unit_add_default_cgroup(u)) < 0)
 348                         return r;
 349         }
 350
 351         return mount_verify(m);
 352 }
 353
 354 static int mount_notify_automount(Mount *m, int status) {
 355         Unit *p;
 356         int r;
 357
 358         assert(m);
 359
 360         if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
 361                 return r == -ENOENT ? 0 : r;
 362
 363         return automount_send_ready(AUTOMOUNT(p), status);
 364 }
 365
 366 static void mount_set_state(Mount *m, MountState state) {
 367         MountState old_state;
 368         assert(m);
 369
 370         old_state = m->state;
 371         m->state = state;
 372
 373         if (state != MOUNT_MOUNTING &&
 374             state != MOUNT_MOUNTING_DONE &&
 375             state != MOUNT_REMOUNTING &&
 376             state != MOUNT_UNMOUNTING &&
 377             state != MOUNT_MOUNTING_SIGTERM &&
 378             state != MOUNT_MOUNTING_SIGKILL &&
 379             state != MOUNT_UNMOUNTING_SIGTERM &&
 380             state != MOUNT_UNMOUNTING_SIGKILL &&
 381             state != MOUNT_REMOUNTING_SIGTERM &&
 382             state != MOUNT_REMOUNTING_SIGKILL) {
 383                 unit_unwatch_timer(UNIT(m), &m->timer_watch);
 384                 mount_unwatch_control_pid(m);
 385                 m->control_command = NULL;
 386                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
 387         }
 388
 389         if (state == MOUNT_MOUNTED ||
 390             state == MOUNT_REMOUNTING)
 391                 mount_notify_automount(m, 0);
 392         else if (state == MOUNT_DEAD ||
 393                  state == MOUNT_UNMOUNTING ||
 394                  state == MOUNT_MOUNTING_SIGTERM ||
 395                  state == MOUNT_MOUNTING_SIGKILL ||
 396                  state == MOUNT_REMOUNTING_SIGTERM ||
 397                  state == MOUNT_REMOUNTING_SIGKILL ||
 398                  state == MOUNT_UNMOUNTING_SIGTERM ||
 399                  state == MOUNT_UNMOUNTING_SIGKILL ||
 400                  state == MOUNT_MAINTAINANCE)
 401                 mount_notify_automount(m, -ENODEV);
 402
 403         if (state != old_state)
 404                 log_debug("%s changed %s -> %s",
 405                           UNIT(m)->meta.id,
 406                           mount_state_to_string(old_state),
 407                           mount_state_to_string(state));
 408
 409         unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
 410 }
 411
 412 static int mount_coldplug(Unit *u) {
 413         Mount *m = MOUNT(u);
 414         MountState new_state = MOUNT_DEAD;
 415         int r;
 416
 417         assert(m);
 418         assert(m->state == MOUNT_DEAD);
 419
 420         if (m->deserialized_state != m->state)
 421                 new_state = m->deserialized_state;
 422         else if (m->from_proc_self_mountinfo)
 423                 new_state = MOUNT_MOUNTED;
 424
 425         if (new_state != m->state) {
 426
 427                 if (new_state == MOUNT_MOUNTING ||
 428                     new_state == MOUNT_MOUNTING_DONE ||
 429                     new_state == MOUNT_REMOUNTING ||
 430                     new_state == MOUNT_UNMOUNTING ||
 431                     new_state == MOUNT_MOUNTING_SIGTERM ||
 432                     new_state == MOUNT_MOUNTING_SIGKILL ||
 433                     new_state == MOUNT_UNMOUNTING_SIGTERM ||
 434                     new_state == MOUNT_UNMOUNTING_SIGKILL ||
 435                     new_state == MOUNT_REMOUNTING_SIGTERM ||
 436                     new_state == MOUNT_REMOUNTING_SIGKILL) {
 437
 438                         if (m->control_pid <= 0)
 439                                 return -EBADMSG;
 440
 441                         if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
 442                                 return r;
 443
 444                         if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 445                                 return r;
 446                 }
 447
 448                 mount_set_state(m, new_state);
 449         }
 450
 451         return 0;
 452 }
 453
 454 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
 455         Mount *m = MOUNT(u);
 456         MountParameters *p;
 457
 458         assert(m);
 459         assert(f);
 460
 461         if (m->from_proc_self_mountinfo)
 462                 p = &m->parameters_proc_self_mountinfo;
 463         else if (m->from_fragment)
 464                 p = &m->parameters_fragment;
 465         else
 466                 p = &m->parameters_etc_fstab;
 467
 468         fprintf(f,
 469                 "%sMount State: %s\n"
 470                 "%sWhere: %s\n"
 471                 "%sWhat: %s\n"
 472                 "%sFile System Type: %s\n"
 473                 "%sOptions: %s\n"
 474                 "%sFrom /etc/fstab: %s\n"
 475                 "%sFrom /proc/self/mountinfo: %s\n"
 476                 "%sFrom fragment: %s\n"
 477                 "%sKillMode: %s\n",
 478                 prefix, mount_state_to_string(m->state),
 479                 prefix, m->where,
 480                 prefix, strna(p->what),
 481                 prefix, strna(p->fstype),
 482                 prefix, strna(p->options),
 483                 prefix, yes_no(m->from_etc_fstab),
 484                 prefix, yes_no(m->from_proc_self_mountinfo),
 485                 prefix, yes_no(m->from_fragment),
 486                 prefix, kill_mode_to_string(m->kill_mode));
 487
 488         if (m->control_pid > 0)
 489                 fprintf(f,
 490                         "%sControl PID: %llu\n",
 491                         prefix, (unsigned long long) m->control_pid);
 492
 493         exec_context_dump(&m->exec_context, f, prefix);
 494 }
 495
 496 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
 497         pid_t pid;
 498         int r;
 499
 500         assert(m);
 501         assert(c);
 502         assert(_pid);
 503
 504         if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 505                 goto fail;
 506
 507         if ((r = exec_spawn(c,
 508                             NULL,
 509                             &m->exec_context,
 510                             NULL, 0,
 511                             m->meta.manager->environment,
 512                             true,
 513                             true,
 514                             UNIT(m)->meta.manager->confirm_spawn,
 515                             UNIT(m)->meta.cgroup_bondings,
 516                             &pid)) < 0)
 517                 goto fail;
 518
 519         if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
 520                 /* FIXME: we need to do something here */
 521                 goto fail;
 522
 523         *_pid = pid;
 524
 525         return 0;
 526
 527 fail:
 528         unit_unwatch_timer(UNIT(m), &m->timer_watch);
 529
 530         return r;
 531 }
 532
 533 static void mount_enter_dead(Mount *m, bool success) {
 534         assert(m);
 535
 536         if (!success)
 537                 m->failure = true;
 538
 539         mount_set_state(m, m->failure ? MOUNT_MAINTAINANCE : MOUNT_DEAD);
 540 }
 541
 542 static void mount_enter_mounted(Mount *m, bool success) {
 543         assert(m);
 544
 545         if (!success)
 546                 m->failure = true;
 547
 548         mount_set_state(m, MOUNT_MOUNTED);
 549 }
 550
 551 static void mount_enter_signal(Mount *m, MountState state, bool success) {
 552         int r;
 553         bool sent = false;
 554
 555         assert(m);
 556
 557         if (!success)
 558                 m->failure = true;
 559
 560         if (m->kill_mode != KILL_NONE) {
 561                 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
 562                            state == MOUNT_UNMOUNTING_SIGTERM ||
 563                            state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
 564
 565                 if (m->kill_mode == KILL_CONTROL_GROUP) {
 566
 567                         if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
 568                                 if (r != -EAGAIN && r != -ESRCH)
 569                                         goto fail;
 570                         } else
 571                                 sent = true;
 572                 }
 573
 574                 if (!sent && m->control_pid > 0)
 575                         if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
 576                                 r = -errno;
 577                                 goto fail;
 578                         }
 579         }
 580
 581         if (sent) {
 582                 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
 583                         goto fail;
 584
 585                 mount_set_state(m, state);
 586         } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
 587                 mount_enter_mounted(m, true);
 588         else
 589                 mount_enter_dead(m, true);
 590
 591         return;
 592
 593 fail:
 594         log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r));
 595
 596         if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
 597                 mount_enter_mounted(m, false);
 598         else
 599                 mount_enter_dead(m, false);
 600 }
 601
 602 static void mount_enter_unmounting(Mount *m, bool success) {
 603         int r;
 604
 605         assert(m);
 606
 607         if (!success)
 608                 m->failure = true;
 609
 610         m->control_command_id = MOUNT_EXEC_UNMOUNT;
 611         m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
 612
 613         if ((r = exec_command_set(
 614                              m->control_command,
 615                              "/bin/umount",
 616                              m->where,
 617                              NULL)) < 0)
 618                 goto fail;
 619
 620         mount_unwatch_control_pid(m);
 621
 622         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 623                 goto fail;
 624
 625         mount_set_state(m, MOUNT_UNMOUNTING);
 626
 627         return;
 628
 629 fail:
 630         log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
 631         mount_enter_mounted(m, false);
 632 }
 633
 634 static void mount_enter_mounting(Mount *m) {
 635         int r;
 636
 637         assert(m);
 638
 639         m->control_command_id = MOUNT_EXEC_MOUNT;
 640         m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
 641
 642         if (m->from_fragment)
 643                 r = exec_command_set(
 644                                 m->control_command,
 645                                 "/bin/mount",
 646                                 m->parameters_fragment.what,
 647                                 m->where,
 648                                 "-t", m->parameters_fragment.fstype,
 649                                 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
 650                                 NULL);
 651         else if (m->from_etc_fstab)
 652                 r = exec_command_set(
 653                                 m->control_command,
 654                                 "/bin/mount",
 655                                 m->where,
 656                                 NULL);
 657         else
 658                 r = -ENOENT;
 659
 660         if (r < 0)
 661                 goto fail;
 662
 663         mount_unwatch_control_pid(m);
 664
 665         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 666                 goto fail;
 667
 668         mount_set_state(m, MOUNT_MOUNTING);
 669
 670         return;
 671
 672 fail:
 673         log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
 674         mount_enter_dead(m, false);
 675 }
 676
 677 static void mount_enter_mounting_done(Mount *m) {
 678         assert(m);
 679
 680         mount_set_state(m, MOUNT_MOUNTING_DONE);
 681 }
 682
 683 static void mount_enter_remounting(Mount *m, bool success) {
 684         int r;
 685
 686         assert(m);
 687
 688         if (!success)
 689                 m->failure = true;
 690
 691         m->control_command_id = MOUNT_EXEC_REMOUNT;
 692         m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
 693
 694         if (m->from_fragment) {
 695                 char *buf = NULL;
 696                 const char *o;
 697
 698                 if (m->parameters_fragment.options) {
 699                         if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
 700                                 r = -ENOMEM;
 701                                 goto fail;
 702                         }
 703
 704                         o = buf;
 705                 } else
 706                         o = "remount";
 707
 708                 r = exec_command_set(
 709                                 m->control_command,
 710                                 "/bin/mount",
 711                                 m->parameters_fragment.what,
 712                                 m->where,
 713                                 "-t", m->parameters_fragment.fstype,
 714                                 "-o", o,
 715                                 NULL);
 716
 717                 free(buf);
 718         } else if (m->from_etc_fstab)
 719                 r = exec_command_set(
 720                                 m->control_command,
 721                                 "/bin/mount",
 722                                 m->where,
 723                                 "-o", "remount",
 724                                 NULL);
 725         else
 726                 r = -ENOENT;
 727
 728         if (r < 0) {
 729                 r = -ENOMEM;
 730                 goto fail;
 731         }
 732
 733         mount_unwatch_control_pid(m);
 734
 735         if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
 736                 goto fail;
 737
 738         mount_set_state(m, MOUNT_REMOUNTING);
 739
 740         return;
 741
 742 fail:
 743         mount_enter_mounted(m, false);
 744 }
 745
 746 static int mount_start(Unit *u) {
 747         Mount *m = MOUNT(u);
 748
 749         assert(m);
 750
 751         /* We cannot fulfill this request right now, try again later
 752          * please! */
 753         if (m->state == MOUNT_UNMOUNTING ||
 754             m->state == MOUNT_UNMOUNTING_SIGTERM ||
 755             m->state == MOUNT_UNMOUNTING_SIGKILL)
 756                 return -EAGAIN;
 757
 758         /* Already on it! */
 759         if (m->state == MOUNT_MOUNTING ||
 760             m->state == MOUNT_MOUNTING_SIGTERM ||
 761             m->state == MOUNT_MOUNTING_SIGKILL)
 762                 return 0;
 763
 764         assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTAINANCE);
 765
 766         m->failure = false;
 767         mount_enter_mounting(m);
 768         return 0;
 769 }
 770
 771 static int mount_stop(Unit *u) {
 772         Mount *m = MOUNT(u);
 773
 774         assert(m);
 775
 776         /* Cann't do this right now. */
 777         if (m->state == MOUNT_MOUNTING ||
 778             m->state == MOUNT_MOUNTING_DONE ||
 779             m->state == MOUNT_MOUNTING_SIGTERM ||
 780             m->state == MOUNT_MOUNTING_SIGKILL ||
 781             m->state == MOUNT_REMOUNTING ||
 782             m->state == MOUNT_REMOUNTING_SIGTERM ||
 783             m->state == MOUNT_REMOUNTING_SIGKILL)
 784                 return -EAGAIN;
 785
 786         /* Already on it */
 787         if (m->state == MOUNT_UNMOUNTING ||
 788             m->state == MOUNT_UNMOUNTING_SIGKILL ||
 789             m->state == MOUNT_UNMOUNTING_SIGTERM)
 790                 return 0;
 791
 792         assert(m->state == MOUNT_MOUNTED);
 793
 794         mount_enter_unmounting(m, true);
 795         return 0;
 796 }
 797
 798 static int mount_reload(Unit *u) {
 799         Mount *m = MOUNT(u);
 800
 801         assert(m);
 802
 803         if (m->state == MOUNT_MOUNTING_DONE)
 804                 return -EAGAIN;
 805
 806         assert(m->state == MOUNT_MOUNTED);
 807
 808         mount_enter_remounting(m, true);
 809         return 0;
 810 }
 811
 812 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
 813         Mount *m = MOUNT(u);
 814
 815         assert(m);
 816         assert(f);
 817         assert(fds);
 818
 819         unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
 820         unit_serialize_item(u, f, "failure", yes_no(m->failure));
 821
 822         if (m->control_pid > 0)
 823                 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) m->control_pid);
 824
 825         if (m->control_command_id >= 0)
 826                 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
 827
 828         return 0;
 829 }
 830
 831 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
 832         Mount *m = MOUNT(u);
 833         int r;
 834
 835         assert(u);
 836         assert(key);
 837         assert(value);
 838         assert(fds);
 839
 840         if (streq(key, "state")) {
 841                 MountState state;
 842
 843                 if ((state = mount_state_from_string(value)) < 0)
 844                         log_debug("Failed to parse state value %s", value);
 845                 else
 846                         m->deserialized_state = state;
 847         } else if (streq(key, "failure")) {
 848                 int b;
 849
 850                 if ((b = parse_boolean(value)) < 0)
 851                         log_debug("Failed to parse failure value %s", value);
 852                 else
 853                         m->failure = b || m->failure;
 854
 855         } else if (streq(key, "control-pid")) {
 856                 unsigned pid;
 857
 858                 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
 859                         log_debug("Failed to parse control-pid value %s", value);
 860                 else
 861                         m->control_pid = (pid_t) pid;
 862         } else if (streq(key, "control-command")) {
 863                 MountExecCommand id;
 864
 865                 if ((id = mount_exec_command_from_string(value)) < 0)
 866                         log_debug("Failed to parse exec-command value %s", value);
 867                 else {
 868                         m->control_command_id = id;
 869                         m->control_command = m->exec_command + id;
 870                 }
 871
 872         } else
 873                 log_debug("Unknown serialization key '%s'", key);
 874
 875         return 0;
 876 }
 877
 878 static UnitActiveState mount_active_state(Unit *u) {
 879         assert(u);
 880
 881         return state_translation_table[MOUNT(u)->state];
 882 }
 883
 884 static const char *mount_sub_state_to_string(Unit *u) {
 885         assert(u);
 886
 887         return mount_state_to_string(MOUNT(u)->state);
 888 }
 889
 890 static bool mount_check_gc(Unit *u) {
 891         Mount *m = MOUNT(u);
 892
 893         assert(m);
 894
 895         return m->from_etc_fstab || m->from_proc_self_mountinfo;
 896 }
 897
 898 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
 899         Mount *m = MOUNT(u);
 900         bool success;
 901
 902         assert(m);
 903         assert(pid >= 0);
 904
 905         success = is_clean_exit(code, status);
 906         m->failure = m->failure || !success;
 907
 908         assert(m->control_pid == pid);
 909         m->control_pid = 0;
 910
 911         if (m->control_command) {
 912                 exec_status_fill(&m->control_command->exec_status, pid, code, status);
 913                 m->control_command = NULL;
 914                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
 915         }
 916
 917         log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
 918
 919         /* Note that mount(8) returning and the kernel sending us a
 920          * mount table change event might happen out-of-order. If an
 921          * operation succeed we assume the kernel will follow soon too
 922          * and already change into the resulting state.  If it fails
 923          * we check if the kernel still knows about the mount. and
 924          * change state accordingly. */
 925
 926         switch (m->state) {
 927
 928         case MOUNT_MOUNTING:
 929         case MOUNT_MOUNTING_DONE:
 930         case MOUNT_MOUNTING_SIGKILL:
 931         case MOUNT_MOUNTING_SIGTERM:
 932         case MOUNT_REMOUNTING:
 933         case MOUNT_REMOUNTING_SIGKILL:
 934         case MOUNT_REMOUNTING_SIGTERM:
 935
 936                 if (success && m->from_proc_self_mountinfo)
 937                         mount_enter_mounted(m, true);
 938                 else if (m->from_proc_self_mountinfo)
 939                         mount_enter_mounted(m, false);
 940                 else
 941                         mount_enter_dead(m, false);
 942                 break;
 943
 944         case MOUNT_UNMOUNTING:
 945         case MOUNT_UNMOUNTING_SIGKILL:
 946         case MOUNT_UNMOUNTING_SIGTERM:
 947
 948                 if (success)
 949                         mount_enter_dead(m, true);
 950                 else if (m->from_proc_self_mountinfo)
 951                         mount_enter_mounted(m, false);
 952                 else
 953                         mount_enter_dead(m, false);
 954                 break;
 955
 956         default:
 957                 assert_not_reached("Uh, control process died at wrong time.");
 958         }
 959 }
 960
 961 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
 962         Mount *m = MOUNT(u);
 963
 964         assert(m);
 965         assert(elapsed == 1);
 966         assert(w == &m->timer_watch);
 967
 968         switch (m->state) {
 969
 970         case MOUNT_MOUNTING:
 971         case MOUNT_MOUNTING_DONE:
 972                 log_warning("%s mounting timed out. Stopping.", u->meta.id);
 973                 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
 974                 break;
 975
 976         case MOUNT_REMOUNTING:
 977                 log_warning("%s remounting timed out. Stopping.", u->meta.id);
 978                 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
 979                 break;
 980
 981         case MOUNT_UNMOUNTING:
 982                 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
 983                 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
 984                 break;
 985
 986         case MOUNT_MOUNTING_SIGTERM:
 987                 log_warning("%s mounting timed out. Killing.", u->meta.id);
 988                 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
 989                 break;
 990
 991         case MOUNT_REMOUNTING_SIGTERM:
 992                 log_warning("%s remounting timed out. Killing.", u->meta.id);
 993                 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
 994                 break;
 995
 996         case MOUNT_UNMOUNTING_SIGTERM:
 997                 log_warning("%s unmounting timed out. Killing.", u->meta.id);
 998                 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
 999                 break;
1000
1001         case MOUNT_MOUNTING_SIGKILL:
1002         case MOUNT_REMOUNTING_SIGKILL:
1003         case MOUNT_UNMOUNTING_SIGKILL:
1004                 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1005
1006                 if (m->from_proc_self_mountinfo)
1007                         mount_enter_mounted(m, false);
1008                 else
1009                         mount_enter_dead(m, false);
1010                 break;
1011
1012         default:
1013                 assert_not_reached("Timeout at wrong time.");
1014         }
1015 }
1016
1017 static int mount_add_one(
1018                 Manager *m,
1019                 const char *what,
1020                 const char *where,
1021                 const char *options,
1022                 const char *fstype,
1023                 bool from_proc_self_mountinfo,
1024                 bool set_flags) {
1025         int r;
1026         Unit *u;
1027         bool delete;
1028         char *e, *w = NULL, *o = NULL, *f = NULL;
1029         MountParameters *p;
1030
1031         assert(m);
1032         assert(what);
1033         assert(where);
1034         assert(options);
1035         assert(fstype);
1036
1037         assert(!set_flags || from_proc_self_mountinfo);
1038
1039         /* Ignore API mount points. They should never be referenced in
1040          * dependencies ever. */
1041         if (mount_point_is_api(where))
1042                 return 0;
1043
1044         if (streq(fstype, "autofs"))
1045                 return 0;
1046
1047         /* probably some kind of swap, ignore */
1048         if (!is_path(where))
1049                 return 0;
1050
1051         if (!(e = unit_name_from_path(where, ".mount")))
1052                 return -ENOMEM;
1053
1054         if (!(u = manager_get_unit(m, e))) {
1055                 delete = true;
1056
1057                 if (!(u = unit_new(m))) {
1058                         free(e);
1059                         return -ENOMEM;
1060                 }
1061
1062                 r = unit_add_name(u, e);
1063                 free(e);
1064
1065                 if (r < 0)
1066                         goto fail;
1067
1068                 if (!(MOUNT(u)->where = strdup(where))) {
1069                         r = -ENOMEM;
1070                         goto fail;
1071                 }
1072
1073                 unit_add_to_load_queue(u);
1074         } else {
1075                 delete = false;
1076                 free(e);
1077         }
1078
1079         if (!(w = strdup(what)) ||
1080             !(o = strdup(options)) ||
1081             !(f = strdup(fstype))) {
1082                 r = -ENOMEM;
1083                 goto fail;
1084         }
1085
1086         if (from_proc_self_mountinfo) {
1087                 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1088
1089                 if (set_flags) {
1090                         MOUNT(u)->is_mounted = true;
1091                         MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1092                         MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1093                 }
1094
1095                 MOUNT(u)->from_proc_self_mountinfo = true;
1096         } else {
1097                 p = &MOUNT(u)->parameters_etc_fstab;
1098                 MOUNT(u)->from_etc_fstab = true;
1099         }
1100
1101         free(p->what);
1102         p->what = w;
1103
1104         free(p->options);
1105         p->options = o;
1106
1107         free(p->fstype);
1108         p->fstype = f;
1109
1110         unit_add_to_dbus_queue(u);
1111
1112         return 0;
1113
1114 fail:
1115         free(w);
1116         free(o);
1117         free(f);
1118
1119         if (delete && u)
1120                 unit_free(u);
1121
1122         return r;
1123 }
1124
1125 static char *fstab_node_to_udev_node(char *p) {
1126         char *dn, *t;
1127         int r;
1128
1129         /* FIXME: to follow udev's logic 100% we need to leave valid
1130          * UTF8 chars unescaped */
1131
1132         if (startswith(p, "LABEL=")) {
1133
1134                 if (!(t = xescape(p+6, "/ ")))
1135                         return NULL;
1136
1137                 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1138                 free(t);
1139
1140                 if (r < 0)
1141                         return NULL;
1142
1143                 return dn;
1144         }
1145
1146         if (startswith(p, "UUID=")) {
1147
1148                 if (!(t = xescape(p+5, "/ ")))
1149                         return NULL;
1150
1151                 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1152                 free(t);
1153
1154                 if (r < 0)
1155                         return NULL;
1156
1157                 return dn;
1158         }
1159
1160         return strdup(p);
1161 }
1162
1163 static int mount_find_pri(char *options) {
1164         char *end, *pri;
1165         unsigned long r;
1166
1167         if (!(pri = mount_test_option(options, "pri=")))
1168                 return 0;
1169
1170         pri += 4;
1171
1172         errno = 0;
1173         r = strtoul(pri, &end, 10);
1174
1175         if (errno != 0)
1176                 return -errno;
1177
1178         if (end == pri || (*end != ',' && *end != 0))
1179                 return -EINVAL;
1180
1181         return (int) r;
1182 }
1183
1184 static int mount_load_etc_fstab(Manager *m) {
1185         FILE *f;
1186         int r;
1187         struct mntent* me;
1188
1189         assert(m);
1190
1191         errno = 0;
1192         if (!(f = setmntent("/etc/fstab", "r")))
1193                 return -errno;
1194
1195         while ((me = getmntent(f))) {
1196                 char *where, *what;
1197
1198                 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1199                         r = -ENOMEM;
1200                         goto finish;
1201                 }
1202
1203                 if (!(where = strdup(me->mnt_dir))) {
1204                         free(what);
1205                         r = -ENOMEM;
1206                         goto finish;
1207                 }
1208
1209                 if (what[0] == '/')
1210                         path_kill_slashes(what);
1211
1212                 if (where[0] == '/')
1213                         path_kill_slashes(where);
1214
1215                 if (streq(me->mnt_type, "swap")) {
1216                         int pri;
1217
1218                         if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1219                                 r = pri;
1220                         else
1221                                 r = swap_add_one(m,
1222                                                  what,
1223                                                  pri,
1224                                                  !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1225                                                  !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1226                                                  false);
1227                 } else
1228                         r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1229
1230                 free(what);
1231                 free(where);
1232
1233                 if (r < 0)
1234                         goto finish;
1235         }
1236
1237         r = 0;
1238 finish:
1239
1240         endmntent(f);
1241         return r;
1242 }
1243
1244 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1245         int r;
1246         char *device, *path, *options, *fstype, *d, *p;
1247
1248         assert(m);
1249
1250         rewind(m->proc_self_mountinfo);
1251
1252         for (;;) {
1253                 int k;
1254
1255                 device = path = options = fstype = d = p = NULL;
1256
1257                 if ((k = fscanf(m->proc_self_mountinfo,
1258                                 "%*s "       /* (1) mount id */
1259                                 "%*s "       /* (2) parent id */
1260                                 "%*s "       /* (3) major:minor */
1261                                 "%*s "       /* (4) root */
1262                                 "%ms "       /* (5) mount point */
1263                                 "%ms"        /* (6) mount options */
1264                                 "%*[^-]"     /* (7) optional fields */
1265                                 "- "         /* (8) seperator */
1266                                 "%ms "       /* (9) file system type */
1267                                 "%ms"        /* (10) mount source */
1268                                 "%*[^\n]",   /* some rubbish at the end */
1269                                 &path,
1270                                 &options,
1271                                 &fstype,
1272                                 &device)) != 4) {
1273
1274                         if (k == EOF)
1275                                 break;
1276
1277                         r = -EBADMSG;
1278                         goto finish;
1279                 }
1280
1281                 if (!(d = cunescape(device)) ||
1282                     !(p = cunescape(path))) {
1283                         r = -ENOMEM;
1284                         goto finish;
1285                 }
1286
1287                 if ((r = mount_add_one(m, d, p, options, fstype, true, set_flags)) < 0)
1288                         goto finish;
1289
1290                 free(device);
1291                 free(path);
1292                 free(options);
1293                 free(fstype);
1294                 free(d);
1295                 free(p);
1296         }
1297
1298         r = 0;
1299
1300 finish:
1301         free(device);
1302         free(path);
1303         free(options);
1304         free(fstype);
1305         free(d);
1306         free(p);
1307
1308         return r;
1309 }
1310
1311 static void mount_shutdown(Manager *m) {
1312         assert(m);
1313
1314         if (m->proc_self_mountinfo) {
1315                 fclose(m->proc_self_mountinfo);
1316                 m->proc_self_mountinfo = NULL;
1317         }
1318 }
1319
1320 static int mount_enumerate(Manager *m) {
1321         int r;
1322         struct epoll_event ev;
1323         assert(m);
1324
1325         if (!m->proc_self_mountinfo) {
1326                 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1327                         return -errno;
1328
1329                 m->mount_watch.type = WATCH_MOUNT;
1330                 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1331
1332                 zero(ev);
1333                 ev.events = EPOLLERR;
1334                 ev.data.ptr = &m->mount_watch;
1335
1336                 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1337                         return -errno;
1338         }
1339
1340         if ((r = mount_load_etc_fstab(m)) < 0)
1341                 goto fail;
1342
1343         if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1344                 goto fail;
1345
1346         return 0;
1347
1348 fail:
1349         mount_shutdown(m);
1350         return r;
1351 }
1352
1353 void mount_fd_event(Manager *m, int events) {
1354         Meta *meta;
1355         int r;
1356
1357         assert(m);
1358         assert(events == EPOLLERR);
1359
1360         /* The manager calls this for every fd event happening on the
1361          * /proc/self/mountinfo file, which informs us about mounting
1362          * table changes */
1363
1364         if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1365                 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
1366
1367                 /* Reset flags, just in case, for later calls */
1368                 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1369                         Mount *mount = (Mount*) meta;
1370
1371                         mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1372                 }
1373
1374                 return;
1375         }
1376
1377         manager_dispatch_load_queue(m);
1378
1379         LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1380                 Mount *mount = (Mount*) meta;
1381
1382                 if (!mount->is_mounted) {
1383                         /* This has just been unmounted. */
1384
1385                         mount->from_proc_self_mountinfo = false;
1386
1387                         switch (mount->state) {
1388
1389                         case MOUNT_MOUNTED:
1390                                 mount_enter_dead(mount, true);
1391                                 break;
1392
1393                         default:
1394                                 mount_set_state(mount, mount->state);
1395                                 break;
1396
1397                         }
1398
1399                 } else if (mount->just_mounted || mount->just_changed) {
1400
1401                         /* New or changed entrymount */
1402
1403                         switch (mount->state) {
1404
1405                         case MOUNT_DEAD:
1406                         case MOUNT_MAINTAINANCE:
1407                                 mount_enter_mounted(mount, true);
1408                                 break;
1409
1410                         case MOUNT_MOUNTING:
1411                                 mount_enter_mounting_done(mount);
1412                                 break;
1413
1414                         default:
1415                                 /* Nothing really changed, but let's
1416                                  * issue an notification call
1417                                  * nonetheless, in case somebody is
1418                                  * waiting for this. (e.g. file system
1419                                  * ro/rw remounts.) */
1420                                 mount_set_state(mount, mount->state);
1421                                 break;
1422                         }
1423                 }
1424
1425                 /* Reset the flags for later calls */
1426                 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1427         }
1428 }
1429
1430 int mount_path_is_mounted(Manager *m, const char* path) {
1431         char *t;
1432         int r;
1433
1434         assert(m);
1435         assert(path);
1436
1437         if (path[0] != '/')
1438                 return 1;
1439
1440         if (!(t = strdup(path)))
1441                 return -ENOMEM;
1442
1443         path_kill_slashes(t);
1444
1445         for (;;) {
1446                 char *e, *slash;
1447                 Unit *u;
1448
1449                 if (!(e = unit_name_from_path(t, ".mount"))) {
1450                         r = -ENOMEM;
1451                         goto finish;
1452                 }
1453
1454                 u = manager_get_unit(m, e);
1455                 free(e);
1456
1457                 if (u &&
1458                     (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1459                     MOUNT(u)->state != MOUNT_MOUNTED) {
1460                         r = 0;
1461                         goto finish;
1462                 }
1463
1464                 assert_se(slash = strrchr(t, '/'));
1465
1466                 if (slash == t) {
1467                         r = 1;
1468                         goto finish;
1469                 }
1470
1471                 *slash = 0;
1472         }
1473
1474         r = 1;
1475
1476 finish:
1477         free(t);
1478         return r;
1479 }
1480
1481 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1482         [MOUNT_DEAD] = "dead",
1483         [MOUNT_MOUNTING] = "mounting",
1484         [MOUNT_MOUNTING_DONE] = "mounting-done",
1485         [MOUNT_MOUNTED] = "mounted",
1486         [MOUNT_REMOUNTING] = "remounting",
1487         [MOUNT_UNMOUNTING] = "unmounting",
1488         [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1489         [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1490         [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1491         [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1492         [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1493         [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1494         [MOUNT_MAINTAINANCE] = "maintainance"
1495 };
1496
1497 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1498
1499 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1500         [MOUNT_EXEC_MOUNT] = "ExecMount",
1501         [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1502         [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1503 };
1504
1505 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1506
1507 const UnitVTable mount_vtable = {
1508         .suffix = ".mount",
1509
1510         .no_alias = true,
1511         .no_instances = true,
1512         .no_isolate = true,
1513
1514         .init = mount_init,
1515         .load = mount_load,
1516         .done = mount_done,
1517
1518         .coldplug = mount_coldplug,
1519
1520         .dump = mount_dump,
1521
1522         .start = mount_start,
1523         .stop = mount_stop,
1524         .reload = mount_reload,
1525
1526         .serialize = mount_serialize,
1527         .deserialize_item = mount_deserialize_item,
1528
1529         .active_state = mount_active_state,
1530         .sub_state_to_string = mount_sub_state_to_string,
1531
1532         .check_gc = mount_check_gc,
1533
1534         .sigchld_event = mount_sigchld_event,
1535         .timer_event = mount_timer_event,
1536
1537         .bus_message_handler = bus_mount_message_handler,
1538
1539         .enumerate = mount_enumerate,
1540         .shutdown = mount_shutdown
1541 };