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