src/tmpfiles.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering, Kay Sievers
   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 <unistd.h>
  23 #include <fcntl.h>
  24 #include <errno.h>
  25 #include <string.h>
  26 #include <sys/stat.h>
  27 #include <limits.h>
  28 #include <dirent.h>
  29 #include <grp.h>
  30 #include <pwd.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <stddef.h>
  34 #include <getopt.h>
  35 #include <stdbool.h>
  36 #include <time.h>
  37 #include <sys/types.h>
  38 #include <sys/param.h>
  39 #include <glob.h>
  40 #include <fnmatch.h>
  41
  42 #include "log.h"
  43 #include "util.h"
  44 #include "strv.h"
  45 #include "label.h"
  46 #include "set.h"
  47
  48 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
  49  * them in the file system. This is intended to be used to create
  50  * properly owned directories beneath /tmp, /var/tmp, /var/run and
  51  * /var/lock which are volatile and hence need to be recreated on
  52  * bootup. */
  53
  54 enum {
  55         /* These ones take file names */
  56         CREATE_FILE = 'f',
  57         TRUNCATE_FILE = 'F',
  58         CREATE_DIRECTORY = 'd',
  59         TRUNCATE_DIRECTORY = 'D',
  60
  61         /* These ones take globs */
  62         IGNORE_PATH = 'x',
  63         REMOVE_PATH = 'r',
  64         RECURSIVE_REMOVE_PATH = 'R'
  65 };
  66
  67 typedef struct Item {
  68         char type;
  69
  70         char *path;
  71         uid_t uid;
  72         gid_t gid;
  73         mode_t mode;
  74         usec_t age;
  75
  76         bool uid_set:1;
  77         bool gid_set:1;
  78         bool mode_set:1;
  79         bool age_set:1;
  80 } Item;
  81
  82 static Hashmap *items = NULL, *globs = NULL;
  83 static Set *unix_sockets = NULL;
  84
  85 static bool arg_create = false;
  86 static bool arg_clean = false;
  87 static bool arg_remove = false;
  88
  89 static const char *arg_prefix = NULL;
  90
  91 #define MAX_DEPTH 256
  92
  93 static bool needs_glob(int t) {
  94         return t == IGNORE_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH;
  95 }
  96
  97 static struct Item* find_glob(Hashmap *h, const char *match) {
  98         Item *j;
  99         Iterator i;
 100
 101         HASHMAP_FOREACH(j, h, i)
 102                 if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
 103                         return j;
 104
 105         return NULL;
 106 }
 107
 108 static void load_unix_sockets(void) {
 109         FILE *f = NULL;
 110         char line[LINE_MAX];
 111
 112         if (unix_sockets)
 113                 return;
 114
 115         /* We maintain a cache of the sockets we found in
 116          * /proc/net/unix to speed things up a little. */
 117
 118         if (!(unix_sockets = set_new(string_hash_func, string_compare_func)))
 119                 return;
 120
 121         if (!(f = fopen("/proc/net/unix", "re")))
 122                 return;
 123
 124         if (!(fgets(line, sizeof(line), f)))
 125                 goto fail;
 126
 127         for (;;) {
 128                 char *p, *s;
 129                 int k;
 130
 131                 if (!(fgets(line, sizeof(line), f)))
 132                         break;
 133
 134                 truncate_nl(line);
 135
 136                 if (strlen(line) < 53)
 137                         continue;
 138
 139                 p = line + 53;
 140                 p += strspn(p, WHITESPACE);
 141                 p += strcspn(p, WHITESPACE);
 142                 p += strspn(p, WHITESPACE);
 143
 144                 if (*p != '/')
 145                         continue;
 146
 147                 if (!(s = strdup(p)))
 148                         goto fail;
 149
 150                 path_kill_slashes(s);
 151
 152                 if ((k = set_put(unix_sockets, s)) < 0) {
 153                         free(s);
 154
 155                         if (k != -EEXIST)
 156                                 goto fail;
 157                 }
 158         }
 159
 160         return;
 161
 162 fail:
 163         set_free_free(unix_sockets);
 164         unix_sockets = NULL;
 165
 166         if (f)
 167                 fclose(f);
 168 }
 169
 170 static bool unix_socket_alive(const char *fn) {
 171         assert(fn);
 172
 173         load_unix_sockets();
 174
 175         if (unix_sockets)
 176                 return !!set_get(unix_sockets, (char*) fn);
 177
 178         /* We don't know, so assume yes */
 179         return true;
 180 }
 181
 182 static int dir_cleanup(
 183                 const char *p,
 184                 DIR *d,
 185                 const struct stat *ds,
 186                 usec_t cutoff,
 187                 dev_t rootdev,
 188                 bool mountpoint,
 189                 int maxdepth)
 190 {
 191         struct dirent *dent;
 192         struct timespec times[2];
 193         bool deleted = false;
 194         char *sub_path = NULL;
 195         int r = 0;
 196
 197         while ((dent = readdir(d))) {
 198                 struct stat s;
 199                 usec_t age;
 200
 201                 if (streq(dent->d_name, ".") ||
 202                     streq(dent->d_name, ".."))
 203                         continue;
 204
 205                 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
 206
 207                         if (errno != ENOENT) {
 208                                 log_error("stat(%s/%s) failed: %m", p, dent->d_name);
 209                                 r = -errno;
 210                         }
 211
 212                         continue;
 213                 }
 214
 215                 /* Stay on the same filesystem */
 216                 if (s.st_dev != rootdev)
 217                         continue;
 218
 219                 /* Do not delete read-only files owned by root */
 220                 if (s.st_uid == 0 && !(s.st_mode & S_IWUSR))
 221                         continue;
 222
 223                 free(sub_path);
 224                 sub_path = NULL;
 225
 226                 if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) {
 227                         log_error("Out of memory");
 228                         r = -ENOMEM;
 229                         goto finish;
 230                 }
 231
 232                 /* Is there an item configured for this path? */
 233                 if (hashmap_get(items, sub_path))
 234                         continue;
 235
 236                 if (find_glob(globs, sub_path))
 237                         continue;
 238
 239                 if (S_ISDIR(s.st_mode)) {
 240
 241                         if (mountpoint &&
 242                             streq(dent->d_name, "lost+found") &&
 243                             s.st_uid == 0)
 244                                 continue;
 245
 246                         if (maxdepth <= 0)
 247                                 log_warning("Reached max depth on %s.", sub_path);
 248                         else {
 249                                 DIR *sub_dir;
 250                                 int q;
 251
 252                                 sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW);
 253                                 if (sub_dir == NULL) {
 254                                         if (errno != ENOENT) {
 255                                                 log_error("opendir(%s/%s) failed: %m", p, dent->d_name);
 256                                                 r = -errno;
 257                                         }
 258
 259                                         continue;
 260                                 }
 261
 262                                 q = dir_cleanup(sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1);
 263                                 closedir(sub_dir);
 264
 265                                 if (q < 0)
 266                                         r = q;
 267                         }
 268
 269                         /* Ignore ctime, we change it when deleting */
 270                         age = MAX(timespec_load(&s.st_mtim),
 271                                   timespec_load(&s.st_atim));
 272                         if (age >= cutoff)
 273                                 continue;
 274
 275                         log_debug("rmdir '%s'\n", sub_path);
 276
 277                         if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) {
 278                                 if (errno != ENOENT && errno != ENOTEMPTY) {
 279                                         log_error("rmdir(%s): %m", sub_path);
 280                                         r = -errno;
 281                                 }
 282                         }
 283
 284                 } else {
 285                         /* Skip files for which the sticky bit is
 286                          * set. These are semantics we define, and are
 287                          * unknown elsewhere. See XDG_RUNTIME_DIR
 288                          * specification for details. */
 289                         if (s.st_mode & S_ISVTX)
 290                                 continue;
 291
 292                         if (mountpoint && S_ISREG(s.st_mode)) {
 293                                 if (streq(dent->d_name, ".journal") &&
 294                                     s.st_uid == 0)
 295                                         continue;
 296
 297                                 if (streq(dent->d_name, "aquota.user") ||
 298                                     streq(dent->d_name, "aquota.group"))
 299                                         continue;
 300                         }
 301
 302                         /* Ignore sockets that are listed in /proc/net/unix */
 303                         if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path))
 304                                 continue;
 305
 306                         age = MAX3(timespec_load(&s.st_mtim),
 307                                    timespec_load(&s.st_atim),
 308                                    timespec_load(&s.st_ctim));
 309
 310                         if (age >= cutoff)
 311                                 continue;
 312
 313                         log_debug("unlink '%s'\n", sub_path);
 314
 315                         if (unlinkat(dirfd(d), dent->d_name, 0) < 0) {
 316                                 if (errno != ENOENT) {
 317                                         log_error("unlink(%s): %m", sub_path);
 318                                         r = -errno;
 319                                 }
 320                         }
 321
 322                         deleted = true;
 323                 }
 324         }
 325
 326 finish:
 327         if (deleted) {
 328                 /* Restore original directory timestamps */
 329                 times[0] = ds->st_atim;
 330                 times[1] = ds->st_mtim;
 331
 332                 if (futimens(dirfd(d), times) < 0)
 333                         log_error("utimensat(%s): %m", p);
 334         }
 335
 336         free(sub_path);
 337
 338         return r;
 339 }
 340
 341 static int clean_item(Item *i) {
 342         DIR *d;
 343         struct stat s, ps;
 344         bool mountpoint;
 345         int r;
 346         usec_t cutoff, n;
 347
 348         assert(i);
 349
 350         if (i->type != CREATE_DIRECTORY &&
 351             i->type != TRUNCATE_DIRECTORY &&
 352             i->type != IGNORE_PATH)
 353                 return 0;
 354
 355         if (!i->age_set || i->age <= 0)
 356                 return 0;
 357
 358         n = now(CLOCK_REALTIME);
 359         if (n < i->age)
 360                 return 0;
 361
 362         cutoff = n - i->age;
 363
 364         d = opendir(i->path);
 365         if (!d) {
 366                 if (errno == ENOENT)
 367                         return 0;
 368
 369                 log_error("Failed to open directory %s: %m", i->path);
 370                 return -errno;
 371         }
 372
 373         if (fstat(dirfd(d), &s) < 0) {
 374                 log_error("stat(%s) failed: %m", i->path);
 375                 r = -errno;
 376                 goto finish;
 377         }
 378
 379         if (!S_ISDIR(s.st_mode)) {
 380                 log_error("%s is not a directory.", i->path);
 381                 r = -ENOTDIR;
 382                 goto finish;
 383         }
 384
 385         if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) {
 386                 log_error("stat(%s/..) failed: %m", i->path);
 387                 r = -errno;
 388                 goto finish;
 389         }
 390
 391         mountpoint = s.st_dev != ps.st_dev ||
 392                      (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
 393
 394         r = dir_cleanup(i->path, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH);
 395
 396 finish:
 397         if (d)
 398                 closedir(d);
 399
 400         return r;
 401 }
 402
 403 static int create_item(Item *i) {
 404         int fd = -1, r;
 405         mode_t u;
 406         struct stat st;
 407
 408         assert(i);
 409
 410         switch (i->type) {
 411
 412         case IGNORE_PATH:
 413         case REMOVE_PATH:
 414         case RECURSIVE_REMOVE_PATH:
 415                 return 0;
 416
 417         case CREATE_FILE:
 418         case TRUNCATE_FILE:
 419
 420                 u = umask(0);
 421                 fd = open(i->path, O_CREAT|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW|
 422                           (i->type == TRUNCATE_FILE ? O_TRUNC : 0), i->mode);
 423                 umask(u);
 424
 425                 if (fd < 0) {
 426                         log_error("Failed to create file %s: %m", i->path);
 427                         r = -errno;
 428                         goto finish;
 429                 }
 430
 431                 if (fstat(fd, &st) < 0) {
 432                         log_error("stat(%s) failed: %m", i->path);
 433                         r = -errno;
 434                         goto finish;
 435                 }
 436
 437                 if (!S_ISREG(st.st_mode)) {
 438                         log_error("%s is not a file.", i->path);
 439                         r = -EEXIST;
 440                         goto finish;
 441                 }
 442
 443                 if (i->mode_set)
 444                         if (fchmod(fd, i->mode) < 0) {
 445                                 log_error("chmod(%s) failed: %m", i->path);
 446                                 r = -errno;
 447                                 goto finish;
 448                         }
 449
 450                 if (i->uid_set || i->gid_set)
 451                         if (fchown(fd,
 452                                    i->uid_set ? i->uid : (uid_t) -1,
 453                                    i->gid_set ? i->gid : (gid_t) -1) < 0) {
 454                                 log_error("chown(%s) failed: %m", i->path);
 455                                 r = -errno;
 456                                 goto finish;
 457                         }
 458
 459                 break;
 460
 461         case TRUNCATE_DIRECTORY:
 462         case CREATE_DIRECTORY:
 463
 464                 u = umask(0);
 465                 r = mkdir(i->path, i->mode);
 466                 umask(u);
 467
 468                 if (r < 0 && errno != EEXIST) {
 469                         log_error("Failed to create directory %s: %m", i->path);
 470                         r = -errno;
 471                         goto finish;
 472                 }
 473
 474                 if (stat(i->path, &st) < 0) {
 475                         log_error("stat(%s) failed: %m", i->path);
 476                         r = -errno;
 477                         goto finish;
 478                 }
 479
 480                 if (!S_ISDIR(st.st_mode)) {
 481                         log_error("%s is not a directory.", i->path);
 482                         r = -EEXIST;
 483                         goto finish;
 484                 }
 485
 486                 if (i->mode_set)
 487                         if (chmod(i->path, i->mode) < 0) {
 488                                 log_error("chmod(%s) failed: %m", i->path);
 489                                 r = -errno;
 490                                 goto finish;
 491                         }
 492
 493                 if (i->uid_set || i->gid_set)
 494                         if (chown(i->path,
 495                                   i->uid_set ? i->uid : (uid_t) -1,
 496                                   i->gid_set ? i->gid : (gid_t) -1) < 0) {
 497
 498                                 log_error("chown(%s) failed: %m", i->path);
 499                                 r = -errno;
 500                                 goto finish;
 501                         }
 502
 503                 break;
 504         }
 505
 506         if ((r = label_fix(i->path)) < 0)
 507                 goto finish;
 508
 509         log_debug("%s created successfully.", i->path);
 510
 511 finish:
 512         if (fd >= 0)
 513                 close_nointr_nofail(fd);
 514
 515         return r;
 516 }
 517
 518 static int remove_item(Item *i, const char *instance) {
 519         int r;
 520
 521         assert(i);
 522
 523         switch (i->type) {
 524
 525         case CREATE_FILE:
 526         case TRUNCATE_FILE:
 527         case CREATE_DIRECTORY:
 528         case IGNORE_PATH:
 529                 break;
 530
 531         case REMOVE_PATH:
 532                 if (remove(instance) < 0 && errno != ENOENT) {
 533                         log_error("remove(%s): %m", instance);
 534                         return -errno;
 535                 }
 536
 537                 break;
 538
 539         case TRUNCATE_DIRECTORY:
 540         case RECURSIVE_REMOVE_PATH:
 541                 if ((r = rm_rf(instance, false, i->type == RECURSIVE_REMOVE_PATH)) < 0 &&
 542                     r != -ENOENT) {
 543                         log_error("rm_rf(%s): %s", instance, strerror(-r));
 544                         return r;
 545                 }
 546
 547                 break;
 548         }
 549
 550         return 0;
 551 }
 552
 553 static int remove_item_glob(Item *i) {
 554         assert(i);
 555
 556         switch (i->type) {
 557
 558         case CREATE_FILE:
 559         case TRUNCATE_FILE:
 560         case CREATE_DIRECTORY:
 561         case IGNORE_PATH:
 562                 break;
 563
 564         case REMOVE_PATH:
 565         case TRUNCATE_DIRECTORY:
 566         case RECURSIVE_REMOVE_PATH: {
 567                 int r = 0, k;
 568                 glob_t g;
 569                 char **fn;
 570
 571                 zero(g);
 572
 573                 errno = 0;
 574                 if ((k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g)) != 0) {
 575
 576                         if (k != GLOB_NOMATCH) {
 577                                 if (errno != 0)
 578                                         errno = EIO;
 579
 580                                 log_error("glob(%s) failed: %m", i->path);
 581                                 return -errno;
 582                         }
 583                 }
 584
 585                 STRV_FOREACH(fn, g.gl_pathv)
 586                         if ((k = remove_item(i, *fn)) < 0)
 587                                 r = k;
 588
 589                 globfree(&g);
 590                 return r;
 591         }
 592         }
 593
 594         return 0;
 595 }
 596
 597 static int process_item(Item *i) {
 598         int r, q, p;
 599
 600         assert(i);
 601
 602         r = arg_create ? create_item(i) : 0;
 603         q = arg_remove ? remove_item_glob(i) : 0;
 604         p = arg_clean ? clean_item(i) : 0;
 605
 606         if (r < 0)
 607                 return r;
 608
 609         if (q < 0)
 610                 return q;
 611
 612         return p;
 613 }
 614
 615 static void item_free(Item *i) {
 616         assert(i);
 617
 618         free(i->path);
 619         free(i);
 620 }
 621
 622 static int parse_line(const char *fname, unsigned line, const char *buffer) {
 623         Item *i;
 624         char *mode = NULL, *user = NULL, *group = NULL, *age = NULL;
 625         int r;
 626
 627         assert(fname);
 628         assert(line >= 1);
 629         assert(buffer);
 630
 631         if (!(i = new0(Item, 1))) {
 632                 log_error("Out of memory");
 633                 return -ENOMEM;
 634         }
 635
 636         if (sscanf(buffer,
 637                    "%c "
 638                    "%ms "
 639                    "%ms "
 640                    "%ms "
 641                    "%ms "
 642                    "%ms",
 643                    &i->type,
 644                    &i->path,
 645                    &mode,
 646                    &user,
 647                    &group,
 648                    &age) < 2) {
 649                 log_error("[%s:%u] Syntax error.", fname, line);
 650                 r = -EIO;
 651                 goto finish;
 652         }
 653
 654         if (i->type != CREATE_FILE &&
 655             i->type != TRUNCATE_FILE &&
 656             i->type != CREATE_DIRECTORY &&
 657             i->type != TRUNCATE_DIRECTORY &&
 658             i->type != IGNORE_PATH &&
 659             i->type != REMOVE_PATH &&
 660             i->type != RECURSIVE_REMOVE_PATH) {
 661                 log_error("[%s:%u] Unknown file type '%c'.", fname, line, i->type);
 662                 r = -EBADMSG;
 663                 goto finish;
 664         }
 665
 666         if (!path_is_absolute(i->path)) {
 667                 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);
 668                 r = -EBADMSG;
 669                 goto finish;
 670         }
 671
 672         path_kill_slashes(i->path);
 673
 674         if (arg_prefix && !path_startswith(i->path, arg_prefix)) {
 675                 r = 0;
 676                 goto finish;
 677         }
 678
 679         if (user && !streq(user, "-")) {
 680                 unsigned long lu;
 681                 struct passwd *p;
 682
 683                 if (streq(user, "root") || streq(user, "0"))
 684                         i->uid = 0;
 685                 else if (safe_atolu(user, &lu) >= 0)
 686                         i->uid = (uid_t) lu;
 687                 else if ((p = getpwnam(user)))
 688                         i->uid = p->pw_uid;
 689                 else {
 690                         log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
 691                         r = -ENOENT;
 692                         goto finish;
 693                 }
 694
 695                 i->uid_set = true;
 696         }
 697
 698         if (group && !streq(group, "-")) {
 699                 unsigned long lu;
 700                 struct group *g;
 701
 702                 if (streq(group, "root") || streq(group, "0"))
 703                         i->gid = 0;
 704                 else if (safe_atolu(group, &lu) >= 0)
 705                         i->gid = (gid_t) lu;
 706                 else if ((g = getgrnam(group)))
 707                         i->gid = g->gr_gid;
 708                 else {
 709                         log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
 710                         r = -ENOENT;
 711                         goto finish;
 712                 }
 713
 714                 i->gid_set = true;
 715         }
 716
 717         if (mode && !streq(mode, "-")) {
 718                 unsigned m;
 719
 720                 if (sscanf(mode, "%o", &m) != 1) {
 721                         log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
 722                         r = -ENOENT;
 723                         goto finish;
 724                 }
 725
 726                 i->mode = m;
 727                 i->mode_set = true;
 728         } else
 729                 i->mode = i->type == CREATE_DIRECTORY ? 0755 : 0644;
 730
 731         if (age && !streq(age, "-")) {
 732                 if (parse_usec(age, &i->age) < 0) {
 733                         log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
 734                         r = -EBADMSG;
 735                         goto finish;
 736                 }
 737
 738                 i->age_set = true;
 739         }
 740
 741         if ((r = hashmap_put(needs_glob(i->type) ? globs : items, i->path, i)) < 0) {
 742                 if (r == -EEXIST) {
 743                         log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path);
 744                         r = 0;
 745                         goto finish;
 746                 }
 747
 748                 log_error("Failed to insert item %s: %s", i->path, strerror(-r));
 749                 goto finish;
 750         }
 751
 752         i = NULL;
 753         r = 0;
 754
 755 finish:
 756         free(user);
 757         free(group);
 758         free(mode);
 759         free(age);
 760
 761         if (i)
 762                 item_free(i);
 763
 764         return r;
 765 }
 766
 767 static int scandir_filter(const struct dirent *d) {
 768         assert(d);
 769
 770         if (ignore_file(d->d_name))
 771                 return 0;
 772
 773         if (d->d_type != DT_REG &&
 774             d->d_type != DT_LNK)
 775                 return 0;
 776
 777         return endswith(d->d_name, ".conf");
 778 }
 779
 780 static int help(void) {
 781
 782         printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
 783                "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
 784                "  -h --help             Show this help\n"
 785                "     --create           Create marked files/directories\n"
 786                "     --clean            Clean up marked directories\n"
 787                "     --remove           Remove marked files/directories\n"
 788                "     --prefix=PATH      Only apply rules that apply to paths with the specified prefix\n",
 789                program_invocation_short_name);
 790
 791         return 0;
 792 }
 793
 794 static int parse_argv(int argc, char *argv[]) {
 795
 796         enum {
 797                 ARG_CREATE,
 798                 ARG_CLEAN,
 799                 ARG_REMOVE,
 800                 ARG_PREFIX
 801         };
 802
 803         static const struct option options[] = {
 804                 { "help",      no_argument,       NULL, 'h'           },
 805                 { "create",    no_argument,       NULL, ARG_CREATE    },
 806                 { "clean",     no_argument,       NULL, ARG_CLEAN     },
 807                 { "remove",    no_argument,       NULL, ARG_REMOVE    },
 808                 { "prefix",    required_argument, NULL, ARG_PREFIX    },
 809                 { NULL,        0,                 NULL, 0             }
 810         };
 811
 812         int c;
 813
 814         assert(argc >= 0);
 815         assert(argv);
 816
 817         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
 818
 819                 switch (c) {
 820
 821                 case 'h':
 822                         help();
 823                         return 0;
 824
 825                 case ARG_CREATE:
 826                         arg_create = true;
 827                         break;
 828
 829                 case ARG_CLEAN:
 830                         arg_clean = true;
 831                         break;
 832
 833                 case ARG_REMOVE:
 834                         arg_remove = true;
 835                         break;
 836
 837                 case ARG_PREFIX:
 838                         arg_prefix = optarg;
 839                         break;
 840
 841                 case '?':
 842                         return -EINVAL;
 843
 844                 default:
 845                         log_error("Unknown option code %c", c);
 846                         return -EINVAL;
 847                 }
 848         }
 849
 850         if (!arg_clean && !arg_create && !arg_remove) {
 851                 log_error("You need to specify at leat one of --clean, --create or --remove.");
 852                 return -EINVAL;
 853         }
 854
 855         return 1;
 856 }
 857
 858 static int read_config_file(const char *fn, bool ignore_enoent) {
 859         FILE *f;
 860         unsigned v = 0;
 861         int r = 0;
 862
 863         assert(fn);
 864
 865         if (!(f = fopen(fn, "re"))) {
 866
 867                 if (ignore_enoent && errno == ENOENT)
 868                         return 0;
 869
 870                 log_error("Failed to open %s: %m", fn);
 871                 return -errno;
 872         }
 873
 874         for (;;) {
 875                 char line[LINE_MAX], *l;
 876                 int k;
 877
 878                 if (!(fgets(line, sizeof(line), f)))
 879                         break;
 880
 881                 v++;
 882
 883                 l = strstrip(line);
 884                 if (*l == '#' || *l == 0)
 885                         continue;
 886
 887                 if ((k = parse_line(fn, v, l)) < 0)
 888                         if (r == 0)
 889                                 r = k;
 890         }
 891
 892         if (ferror(f)) {
 893                 log_error("Failed to read from file %s: %m", fn);
 894                 if (r == 0)
 895                         r = -EIO;
 896         }
 897
 898         fclose(f);
 899
 900         return r;
 901 }
 902
 903 int main(int argc, char *argv[]) {
 904         int r;
 905         Item *i;
 906         Iterator iterator;
 907
 908         if ((r = parse_argv(argc, argv)) <= 0)
 909                 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 910
 911         log_set_target(LOG_TARGET_AUTO);
 912         log_parse_environment();
 913         log_open();
 914
 915         label_init();
 916
 917         items = hashmap_new(string_hash_func, string_compare_func);
 918         globs = hashmap_new(string_hash_func, string_compare_func);
 919
 920         if (!items || !globs) {
 921                 log_error("Out of memory");
 922                 r = EXIT_FAILURE;
 923                 goto finish;
 924         }
 925
 926         r = EXIT_SUCCESS;
 927
 928         if (optind < argc) {
 929                 int j;
 930
 931                 for (j = optind; j < argc; j++)
 932                         if (read_config_file(argv[j], false) < 0)
 933                                 r = EXIT_FAILURE;
 934
 935         } else {
 936                 int n, j;
 937                 struct dirent **de = NULL;
 938
 939                 if ((n = scandir("/etc/tmpfiles.d/", &de, scandir_filter, alphasort)) < 0) {
 940
 941                         if (errno != ENOENT) {
 942                                 log_error("Failed to enumerate /etc/tmpfiles.d/ files: %m");
 943                                 r = EXIT_FAILURE;
 944                         }
 945
 946                         goto finish;
 947                 }
 948
 949                 for (j = 0; j < n; j++) {
 950                         int k;
 951                         char *fn;
 952
 953                         k = asprintf(&fn, "/etc/tmpfiles.d/%s", de[j]->d_name);
 954                         free(de[j]);
 955
 956                         if (k < 0) {
 957                                 log_error("Failed to allocate file name.");
 958                                 r = EXIT_FAILURE;
 959                                 continue;
 960                         }
 961
 962                         if (read_config_file(fn, true) < 0)
 963                                 r = EXIT_FAILURE;
 964
 965                         free(fn);
 966                 }
 967
 968                 free(de);
 969         }
 970
 971         HASHMAP_FOREACH(i, globs, iterator)
 972                 if (process_item(i) < 0)
 973                         r = EXIT_FAILURE;
 974
 975         HASHMAP_FOREACH(i, items, iterator)
 976                 if (process_item(i) < 0)
 977                         r = EXIT_FAILURE;
 978
 979 finish:
 980         while ((i = hashmap_steal_first(items)))
 981                 item_free(i);
 982
 983         while ((i = hashmap_steal_first(globs)))
 984                 item_free(i);
 985
 986         hashmap_free(items);
 987         hashmap_free(globs);
 988
 989         set_free_free(unix_sockets);
 990
 991         label_finish();
 992
 993         return r;
 994 }