misc/fsck.c

   1 /*
   2  * pfsck --- A generic, parallelizing front-end for the fsck program.
   3  * It will automatically try to run fsck programs in parallel if the
   4  * devices are on separate spindles.  It is based on the same ideas as
   5  * the generic front end for fsck by David Engel and Fred van Kempen,
   6  * but it has been completely rewritten from scratch to support
   7  * parallel execution.
   8  *
   9  * Written by Theodore Ts'o, <tytso@mit.edu>
  10  *
  11  * Usage:       fsck [-ACVRNTM] [-s] [-t fstype] [fs-options] device
  12  *
  13  * Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:
  14  *   o Changed -t fstype to behave like with mount when -A (all file
  15  *     systems) or -M (like mount) is specified.
  16  *   o fsck looks if it can find the fsck.type program to decide
  17  *     if it should ignore the fs type. This way more fsck programs
  18  *     can be added without changing this front-end.
  19  *   o -R flag skip root file system.
  20  *
  21  * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999 Theodore Ts'o.
  22  *
  23  * %Begin-Header%
  24  * This file may be redistributed under the terms of the GNU Public
  25  * License.
  26  * %End-Header%
  27  */
  28
  29 #include <sys/types.h>
  30 #include <sys/wait.h>
  31 #include <sys/signal.h>
  32 #include <sys/stat.h>
  33 #include <limits.h>
  34 #include <stdio.h>
  35 #include <ctype.h>
  36 #include <string.h>
  37 #include <time.h>
  38 #if HAVE_STDLIB_H
  39 #include <stdlib.h>
  40 #endif
  41 #if HAVE_ERRNO_H
  42 #include <errno.h>
  43 #endif
  44 #if HAVE_PATHS_H
  45 #include <paths.h>
  46 #endif
  47 #if HAVE_UNISTD_H
  48 #include <unistd.h>
  49 #endif
  50 #if HAVE_ERRNO_H
  51 #include <errno.h>
  52 #endif
  53 #include <malloc.h>
  54
  55 #include "../version.h"
  56 #include "nls-enable.h"
  57 #include "fsck.h"
  58 #include "get_device_by_label.h"
  59
  60 #ifndef _PATH_MNTTAB
  61 #define _PATH_MNTTAB    "/etc/fstab"
  62 #endif
  63
  64 static const char *ignored_types[] = {
  65         "ignore",
  66         "iso9660",
  67         "nfs",
  68         "proc",
  69         "sw",
  70         "swap",
  71         NULL
  72 };
  73
  74 static const char *really_wanted[] = {
  75         "minix",
  76         "ext2",
  77         "ext3",
  78         "xiafs",
  79         NULL
  80 };
  81
  82 #define BASE_MD "/dev/md"
  83
  84 /*
  85  * Global variables for options
  86  */
  87 char *devices[MAX_DEVICES];
  88 char *args[MAX_ARGS];
  89 int num_devices, num_args;
  90
  91 int verbose = 0;
  92 int doall = 0;
  93 int noexecute = 0;
  94 int serialize = 0;
  95 int skip_root = 0;
  96 int like_mount = 0;
  97 int notitle = 0;
  98 int parallel_root = 0;
  99 int progress = 0;
 100 int force_all_parallel = 0;
 101 char *progname;
 102 char *fstype = NULL;
 103 struct fs_info *filesys_info;
 104 struct fsck_instance *instance_list;
 105 const char *fsck_prefix_path = "/sbin:/sbin/fs.d:/sbin/fs:/etc/fs:/etc";
 106 char *fsck_path = 0;
 107 static int ignore(struct fs_info *);
 108
 109 static char *string_copy(const char *s)
 110 {
 111         char    *ret;
 112
 113         ret = malloc(strlen(s)+1);
 114         if (ret)
 115                 strcpy(ret, s);
 116         return ret;
 117 }
 118
 119 static char *skip_over_blank(char *cp)
 120 {
 121         while (*cp && isspace(*cp))
 122                 cp++;
 123         return cp;
 124 }
 125
 126 static char *skip_over_word(char *cp)
 127 {
 128         while (*cp && !isspace(*cp))
 129                 cp++;
 130         return cp;
 131 }
 132
 133 static void strip_line(char *line)
 134 {
 135         char    *p;
 136
 137         while (*line) {
 138                 p = line + strlen(line) - 1;
 139                 if ((*p == '\n') || (*p == '\r'))
 140                         *p = 0;
 141                 else
 142                         break;
 143         }
 144 }
 145
 146 static char *parse_word(char **buf)
 147 {
 148         char *word, *next;
 149
 150         word = *buf;
 151         if (*word == 0)
 152                 return 0;
 153
 154         word = skip_over_blank(word);
 155         next = skip_over_word(word);
 156         if (*next)
 157                 *next++ = 0;
 158         *buf = next;
 159         return word;
 160 }
 161
 162 static void free_instance(struct fsck_instance *i)
 163 {
 164         if (i->prog)
 165                 free(i->prog);
 166         if (i->device)
 167                 free(i->device);
 168         if (i->base_device)
 169                 free(i->base_device);
 170         free(i);
 171         return;
 172 }
 173
 174 static int parse_fstab_line(char *line, struct fs_info **ret_fs)
 175 {
 176         char    *device, *mntpnt, *type, *opts, *freq, *passno, *cp;
 177         struct fs_info *fs;
 178
 179         *ret_fs = 0;
 180         strip_line(line);
 181         if ((cp = strchr(line, '#')))
 182                 *cp = 0;        /* Ignore everything after the comment char */
 183         cp = line;
 184
 185         device = parse_word(&cp);
 186         mntpnt = parse_word(&cp);
 187         type = parse_word(&cp);
 188         opts = parse_word(&cp);
 189         freq = parse_word(&cp);
 190         passno = parse_word(&cp);
 191
 192         if (!device)
 193                 return 0;       /* Allow blank lines */
 194
 195         if (!mntpnt || !type)
 196                 return -1;
 197
 198         if (!(fs = malloc(sizeof(struct fs_info))))
 199                 return -1;
 200
 201         fs->device = string_copy(device);
 202         fs->mountpt = string_copy(mntpnt);
 203         fs->type = string_copy(type);
 204         fs->opts = string_copy(opts ? opts : "");
 205         fs->freq = freq ? atoi(freq) : -1;
 206         fs->passno = passno ? atoi(passno) : -1;
 207         fs->flags = 0;
 208         fs->next = NULL;
 209
 210         *ret_fs = fs;
 211
 212         return 0;
 213 }
 214
 215 /*
 216  * Interpret the device name if necessary
 217  */
 218 static char *interpret_device(char *spec)
 219 {
 220         char *dev = NULL;
 221
 222         if (!strncmp(spec, "UUID=", 5))
 223                 dev = get_spec_by_uuid(spec+5);
 224         else if (!strncmp(spec, "LABEL=", 6))
 225                 dev = get_spec_by_volume_label(spec+6);
 226         else
 227                 return spec;
 228         if (dev) {
 229                 free(spec);
 230                 return (dev);
 231         }
 232         /*
 233          * Check to see if this was because /proc/partitions isn't
 234          * found.
 235          */
 236         if (access("/proc/partitions", R_OK) < 0) {
 237                 fprintf(stderr, "Couldn't open /proc/partitions: %s\n",
 238                         strerror(errno));
 239                 fprintf(stderr, "Is /proc mounted?\n");
 240                 exit(1);
 241         }
 242         /*
 243          * Check to see if this is because we're not running as root
 244          */
 245         if (geteuid())
 246                 fprintf(stderr, "Must be root to scan for matching "
 247                         "filesystems: %s\n", spec);
 248         else
 249                 fprintf(stderr, "Couldn't find matching filesystem: %s\n",
 250                         spec);
 251         exit(1);
 252 }
 253
 254 /*
 255  * Load the filesystem database from /etc/fstab
 256  */
 257 static void load_fs_info(const char *filename)
 258 {
 259         FILE    *f;
 260         char    buf[1024];
 261         int     lineno = 0;
 262         int     old_fstab = 1;
 263         struct fs_info *fs, *fs_last = NULL;
 264
 265         filesys_info = NULL;
 266         if ((f = fopen(filename, "r")) == NULL) {
 267                 fprintf(stderr, _("WARNING: couldn't open %s: %s\n"),
 268                         filename, strerror(errno));
 269                 return;
 270         }
 271         while (!feof(f)) {
 272                 lineno++;
 273                 if (!fgets(buf, sizeof(buf), f))
 274                         break;
 275                 buf[sizeof(buf)-1] = 0;
 276                 if (parse_fstab_line(buf, &fs) < 0) {
 277                         fprintf(stderr, _("WARNING: bad format "
 278                                 "on line %d of %s\n"), lineno, filename);
 279                         continue;
 280                 }
 281                 if (!fs)
 282                         continue;
 283                 if (!filesys_info)
 284                         filesys_info = fs;
 285                 else
 286                         fs_last->next = fs;
 287                 fs_last = fs;
 288                 if (fs->passno < 0)
 289                         fs->passno = 0;
 290                 else
 291                         old_fstab = 0;
 292         }
 293
 294         fclose(f);
 295
 296         if (old_fstab) {
 297                 fprintf(stderr, _("\007\007\007"
 298                 "WARNING: Your /etc/fstab does not contain the fsck passno\n"
 299                 "       field.  I will kludge around things for you, but you\n"
 300                 "       should fix your /etc/fstab file as soon as you can.\n\n"));
 301
 302                 for (fs = filesys_info; fs; fs = fs->next) {
 303                         fs->passno = 1;
 304                 }
 305         }
 306 }
 307
 308 /* Lookup filesys in /etc/fstab and return the corresponding entry. */
 309 static struct fs_info *lookup(char *filesys)
 310 {
 311         struct fs_info *fs;
 312         int     try_again = 0;
 313
 314         /* No filesys name given. */
 315         if (filesys == NULL)
 316                 return NULL;
 317
 318         for (fs = filesys_info; fs; fs = fs->next) {
 319                 if (strchr(fs->device, '='))
 320                         try_again++;
 321                 if (!strcmp(filesys, fs->device) ||
 322                     !strcmp(filesys, fs->mountpt))
 323                         break;
 324         }
 325         if (fs && strchr(fs->device, '='))
 326                 fs->device = interpret_device(fs->device);
 327
 328         if (fs || !try_again)
 329                 return fs;
 330
 331         for (fs = filesys_info; fs; fs = fs->next) {
 332                 fs->device = interpret_device(fs->device);
 333                 if (!strcmp(filesys, fs->device) ||
 334                     !strcmp(filesys, fs->mountpt))
 335                         break;
 336         }
 337
 338         return fs;
 339 }
 340
 341 /* Find fsck program for a given fs type. */
 342 static char *find_fsck(char *type)
 343 {
 344   char *s;
 345   const char *tpl;
 346   static char prog[256];
 347   char *p = string_copy(fsck_path);
 348   struct stat st;
 349
 350   /* Are we looking for a program or just a type? */
 351   tpl = (strncmp(type, "fsck.", 5) ? "%s/fsck.%s" : "%s/%s");
 352
 353   for(s = strtok(p, ":"); s; s = strtok(NULL, ":")) {
 354         sprintf(prog, tpl, s, type);
 355         if (stat(prog, &st) == 0) break;
 356   }
 357   free(p);
 358   return(s ? prog : NULL);
 359 }
 360
 361 static int progress_active(NOARGS)
 362 {
 363         struct fsck_instance *inst;
 364
 365         for (inst = instance_list; inst; inst = inst->next) {
 366                 if (inst->flags & FLAG_DONE)
 367                         continue;
 368                 if (inst->flags & FLAG_PROGRESS)
 369                         return 1;
 370         }
 371         return 0;
 372 }
 373
 374 /*
 375  * Execute a particular fsck program, and link it into the list of
 376  * child processes we are waiting for.
 377  */
 378 static int execute(const char *type, char *device, char *mntpt,
 379                    int interactive)
 380 {
 381         char *s, *argv[80], prog[80];
 382         int  argc, i;
 383         struct fsck_instance *inst, *p;
 384         pid_t   pid;
 385
 386         inst = malloc(sizeof(struct fsck_instance));
 387         if (!inst)
 388                 return ENOMEM;
 389         memset(inst, 0, sizeof(struct fsck_instance));
 390
 391         sprintf(prog, "fsck.%s", type);
 392         argv[0] = string_copy(prog);
 393         argc = 1;
 394
 395         for (i=0; i <num_args; i++)
 396                 argv[argc++] = string_copy(args[i]);
 397
 398         if (progress & !progress_active()) {
 399                 if ((strcmp(type, "ext2") == 0) ||
 400                     (strcmp(type, "ext3") == 0)) {
 401                         argv[argc++] = string_copy("-C0");
 402                         inst->flags |= FLAG_PROGRESS;
 403                 }
 404         }
 405
 406         argv[argc++] = string_copy(device);
 407         argv[argc] = 0;
 408
 409         s = find_fsck(prog);
 410         if (s == NULL) {
 411                 fprintf(stderr, _("fsck: %s: not found\n"), prog);
 412                 return ENOENT;
 413         }
 414
 415         if (verbose || noexecute) {
 416                 printf("[%s -- %s] ", s, mntpt ? mntpt : device);
 417                 for (i=0; i < argc; i++)
 418                         printf("%s ", argv[i]);
 419                 printf("\n");
 420         }
 421
 422         /* Fork and execute the correct program. */
 423         if (noexecute)
 424                 pid = -1;
 425         else if ((pid = fork()) < 0) {
 426                 perror("fork");
 427                 return errno;
 428         } else if (pid == 0) {
 429                 if (!interactive)
 430                         close(0);
 431                 (void) execv(s, argv);
 432                 perror(argv[0]);
 433                 exit(EXIT_ERROR);
 434         }
 435
 436         for (i=0; i < argc; i++)
 437                 free(argv[i]);
 438
 439         inst->pid = pid;
 440         inst->prog = string_copy(prog);
 441         inst->type = string_copy(type);
 442         inst->device = string_copy(device);
 443         inst->base_device = base_device(device);
 444         inst->start_time = time(0);
 445         inst->next = NULL;
 446
 447         /*
 448          * Find the end of the list, so we add the instance on at the end.
 449          */
 450         for (p = instance_list; p && p->next; p = p->next);
 451
 452         if (p)
 453                 p->next = inst;
 454         else
 455                 instance_list = inst;
 456
 457         return 0;
 458 }
 459
 460 /*
 461  * Wait for one child process to exit; when it does, unlink it from
 462  * the list of executing child processes, and return it.
 463  */
 464 static struct fsck_instance *wait_one(NOARGS)
 465 {
 466         int     status;
 467         int     sig;
 468         struct fsck_instance *inst, *inst2, *prev;
 469         pid_t   pid;
 470
 471         if (!instance_list)
 472                 return NULL;
 473
 474         if (noexecute) {
 475                 inst = instance_list;
 476                 instance_list = inst->next;
 477                 inst->exit_status = 0;
 478                 return(inst);
 479         }
 480
 481         /*
 482          * gcc -Wall fails saving throw against stupidity
 483          * (inst and prev are thought to be uninitialized variables)
 484          */
 485         inst = prev = NULL;
 486
 487         do {
 488                 pid = wait(&status);
 489                 if (pid < 0) {
 490                         if ((errno == EINTR) || (errno == EAGAIN))
 491                                 continue;
 492                         if (errno == ECHILD) {
 493                                 fprintf(stderr,
 494                                         _("%s: wait: No more child process?!?\n"),
 495                                         progname);
 496                                 return NULL;
 497                         }
 498                         perror("wait");
 499                         continue;
 500                 }
 501                 for (prev = 0, inst = instance_list;
 502                      inst;
 503                      prev = inst, inst = inst->next) {
 504                         if (inst->pid == pid)
 505                                 break;
 506                 }
 507         } while (!inst);
 508
 509         if (WIFEXITED(status))
 510                 status = WEXITSTATUS(status);
 511         else if (WIFSIGNALED(status)) {
 512                 sig = WTERMSIG(status);
 513                 if (sig == SIGINT) {
 514                         status = EXIT_UNCORRECTED;
 515                 } else {
 516                         printf(_("Warning... %s for device %s exited "
 517                                "with signal %d.\n"),
 518                                inst->prog, inst->device, sig);
 519                         status = EXIT_ERROR;
 520                 }
 521         } else {
 522                 printf(_("%s %s: status is %x, should never happen.\n"),
 523                        inst->prog, inst->device, status);
 524                 status = EXIT_ERROR;
 525         }
 526         inst->exit_status = status;
 527         if (prev)
 528                 prev->next = inst->next;
 529         else
 530                 instance_list = inst->next;
 531         if (progress && (inst->flags & FLAG_PROGRESS) &&
 532             !progress_active()) {
 533                 for (inst2 = instance_list; inst2; inst2 = inst2->next) {
 534                         if (inst2->flags & FLAG_DONE)
 535                                 continue;
 536                         if (strcmp(inst2->type, "ext2") &&
 537                             strcmp(inst2->type, "ext3"))
 538                                 continue;
 539                         /*
 540                          * If we've just started the fsck, wait a tiny
 541                          * bit before sending the kill, to give it
 542                          * time to set up the signal handler
 543                          */
 544                         if (inst2->start_time < time(0)+2) {
 545                                 if (fork() == 0) {
 546                                         sleep(1);
 547                                         kill(inst2->pid, SIGUSR1);
 548                                         exit(0);
 549                                 }
 550                         } else
 551                                 kill(inst2->pid, SIGUSR1);
 552                         inst2->flags |= FLAG_PROGRESS;
 553                         break;
 554                 }
 555         }
 556         return inst;
 557 }
 558
 559 /*
 560  * Wait until all executing child processes have exited; return the
 561  * logical OR of all of their exit code values.
 562  */
 563 static int wait_all(NOARGS)
 564 {
 565         struct fsck_instance *inst;
 566         int     global_status = 0;
 567
 568         while (instance_list) {
 569                 inst = wait_one();
 570                 if (!inst)
 571                         break;
 572                 global_status |= inst->exit_status;
 573                 free_instance(inst);
 574         }
 575         return global_status;
 576 }
 577
 578 /*
 579  * Run the fsck program on a particular device
 580  *
 581  * If the type is specified using -t, and it isn't prefixed with "no"
 582  * (as in "noext2") and only one filesystem type is specified, then
 583  * use that type regardless of what is specified in /etc/fstab.
 584  *
 585  * If the type isn't specified by the user, then use either the type
 586  * specified in /etc/fstab, or DEFAULT_FSTYPE.
 587  */
 588 static void fsck_device(char *device, int interactive)
 589 {
 590         const char *type = 0;
 591         struct fs_info *fsent;
 592         int retval;
 593
 594         if (fstype && strncmp(fstype, "no", 2) && !strchr(fstype, ','))
 595                 type = fstype;
 596
 597         if ((fsent = lookup(device))) {
 598                 device = fsent->device;
 599                 if (!type)
 600                         type = fsent->type;
 601         }
 602         if (!type)
 603                 type = DEFAULT_FSTYPE;
 604
 605         retval = execute(type, device, fsent ? fsent->mountpt : 0,
 606                          interactive);
 607         if (retval) {
 608                 fprintf(stderr, _("%s: Error %d while executing fsck.%s "
 609                         "for %s\n"), progname, retval, type, device);
 610         }
 611 }
 612
 613 /* See if filesystem type matches the list. */
 614 static int fs_match(char *type, char *fs_type)
 615 {
 616   int ret = 0, negate = 0;
 617   char list[128];
 618   char *s;
 619
 620   if (!fs_type) return(1);
 621
 622   if (strncmp(fs_type, "no", 2) == 0) {
 623         fs_type += 2;
 624         negate = 1;
 625   }
 626   strcpy(list, fs_type);
 627   s = strtok(list, ",");
 628   while(s) {
 629         if (strcmp(s, type) == 0) {
 630                 ret = 1;
 631                 break;
 632         }
 633         s = strtok(NULL, ",");
 634   }
 635   return(negate ? !ret : ret);
 636 }
 637
 638
 639 /* Check if we should ignore this filesystem. */
 640 static int ignore(struct fs_info *fs)
 641 {
 642         const char **ip;
 643         int wanted = 0;
 644
 645         /*
 646          * If the pass number is 0, ignore it.
 647          */
 648         if (fs->passno == 0)
 649                 return 1;
 650
 651         /*
 652          * If a specific fstype is specified, and it doesn't match,
 653          * ignore it.
 654          */
 655         if (!fs_match(fs->type, fstype)) return 1;
 656
 657         /* Are we ignoring this type? */
 658         for(ip = ignored_types; *ip; ip++)
 659                 if (strcmp(fs->type, *ip) == 0) return 1;
 660
 661         /* Do we really really want to check this fs? */
 662         for(ip = really_wanted; *ip; ip++)
 663                 if (strcmp(fs->type, *ip) == 0) {
 664                         wanted = 1;
 665                         break;
 666                 }
 667
 668         /* See if the <fsck.fs> program is available. */
 669         if (find_fsck(fs->type) == NULL) {
 670                 if (wanted)
 671                         fprintf(stderr, _("fsck: cannot check %s: fsck.%s not found\n"),
 672                                 fs->device, fs->type);
 673                 return 1;
 674         }
 675
 676         /* We can and want to check this file system type. */
 677         return 0;
 678 }
 679
 680 /*
 681  * Returns TRUE if a partition on the same disk is already being
 682  * checked.
 683  */
 684 static int device_already_active(char *device)
 685 {
 686         struct fsck_instance *inst;
 687         char *base;
 688
 689         if (force_all_parallel)
 690                 return 0;
 691
 692 #ifdef BASE_MD
 693         /* Don't check a soft raid disk with any other disk */
 694         if (instance_list &&
 695             (!strncmp(instance_list->device, BASE_MD, sizeof(BASE_MD)-1) ||
 696              !strncmp(device, BASE_MD, sizeof(BASE_MD)-1)))
 697                 return 1;
 698 #endif
 699
 700         base = base_device(device);
 701         if (!base)
 702                 return 0;
 703         for (inst = instance_list; inst; inst = inst->next) {
 704                 if (!strcmp(base, inst->base_device)) {
 705                         free(base);
 706                         return 1;
 707                 }
 708         }
 709         free(base);
 710         return 0;
 711 }
 712
 713 /* Check all file systems, using the /etc/fstab table. */
 714 static int check_all(NOARGS)
 715 {
 716         struct fs_info *fs = NULL;
 717         struct fsck_instance *inst;
 718         int status = EXIT_OK;
 719         int not_done_yet = 1;
 720         int passno = 1;
 721         int pass_done;
 722
 723         if (verbose)
 724                 printf(_("Checking all file systems.\n"));
 725
 726         /*
 727          * Do an initial scan over the filesystem; mark filesystems
 728          * which should be ignored as done, and resolve LABEL= and
 729          * UUID= specifications to the real device.
 730          */
 731         for (fs = filesys_info; fs; fs = fs->next) {
 732                 if (ignore(fs))
 733                         fs->flags |= FLAG_DONE;
 734                 fs->device = interpret_device(fs->device);
 735         }
 736
 737         /*
 738          * Find and check the root filesystem.
 739          */
 740         if (!parallel_root) {
 741                 for (fs = filesys_info; fs; fs = fs->next) {
 742                         if (!strcmp(fs->mountpt, "/"))
 743                                 break;
 744                 }
 745                 if (fs) {
 746                         if (!skip_root && !ignore(fs)) {
 747                                 fsck_device(fs->device, 1);
 748                                 status |= wait_all();
 749                                 if (status > EXIT_NONDESTRUCT)
 750                                         return status;
 751                         }
 752                         fs->flags |= FLAG_DONE;
 753                 }
 754         }
 755
 756         while (not_done_yet) {
 757                 not_done_yet = 0;
 758                 pass_done = 1;
 759
 760                 for (fs = filesys_info; fs; fs = fs->next) {
 761                         if (fs->flags & FLAG_DONE)
 762                                 continue;
 763                         /*
 764                          * If the filesystem's pass number is higher
 765                          * than the current pass number, then we don't
 766                          * do it yet.
 767                          */
 768                         if (fs->passno > passno) {
 769                                 not_done_yet++;
 770                                 continue;
 771                         }
 772                         /*
 773                          * If a filesystem on a particular device has
 774                          * already been spawned, then we need to defer
 775                          * this to another pass.
 776                          */
 777                         if (device_already_active(fs->device)) {
 778                                 pass_done = 0;
 779                                 continue;
 780                         }
 781                         /*
 782                          * Spawn off the fsck process
 783                          */
 784                         fsck_device(fs->device, serialize);
 785                         fs->flags |= FLAG_DONE;
 786
 787                         if (serialize) {
 788                                 pass_done = 0;
 789                                 break; /* Only do one filesystem at a time */
 790                         }
 791                 }
 792                 if (verbose > 1)
 793                         printf(_("--waiting-- (pass %d)\n"), passno);
 794                 inst = wait_one();
 795                 if (inst) {
 796                         status |= inst->exit_status;
 797                         free_instance(inst);
 798                 }
 799                 if (pass_done) {
 800                         status |= wait_all();
 801                         if (verbose > 1)
 802                                 printf("----------------------------------\n");
 803                         passno++;
 804                 } else
 805                         not_done_yet++;
 806         }
 807         status |= wait_all();
 808         return status;
 809 }
 810
 811 static void usage(NOARGS)
 812 {
 813         fprintf(stderr,
 814                 _("Usage: fsck [-ACNPRTV] [-t fstype] [fs-options] filesys\n"));
 815         exit(EXIT_USAGE);
 816 }
 817
 818 static void PRS(int argc, char *argv[])
 819 {
 820         int     i, j;
 821         char    *arg;
 822         char    options[128];
 823         int     opt = 0;
 824         int     opts_for_fsck = 0;
 825
 826         num_devices = 0;
 827         num_args = 0;
 828         instance_list = 0;
 829
 830         progname = argv[0];
 831
 832         for (i=1; i < argc; i++) {
 833                 arg = argv[i];
 834                 if (!arg)
 835                         continue;
 836                 if ((arg[0] == '/' && !opts_for_fsck) ||
 837                     (strncmp(arg, "LABEL=", 6) == 0) ||
 838                     (strncmp(arg, "UUID=", 5) == 0)) {
 839                         if (num_devices >= MAX_DEVICES) {
 840                                 fprintf(stderr, _("%s: too many devices\n"),
 841                                         progname);
 842                                 exit(1);
 843                         }
 844                         devices[num_devices++] =
 845                                 interpret_device(string_copy(arg));
 846                         continue;
 847                 }
 848                 if (arg[0] != '-' || opts_for_fsck) {
 849                         if (num_args >= MAX_ARGS) {
 850                                 fprintf(stderr, _("%s: too many arguments\n"),
 851                                         progname);
 852                                 exit(1);
 853                         }
 854                         args[num_args++] = string_copy(arg);
 855                         continue;
 856                 }
 857                 for (j=1; arg[j]; j++) {
 858                         if (opts_for_fsck) {
 859                                 options[++opt] = arg[j];
 860                                 continue;
 861                         }
 862                         switch (arg[j]) {
 863                         case 'A':
 864                                 doall++;
 865                                 break;
 866                         case 'C':
 867                                 progress++;
 868                                 break;
 869                         case 'V':
 870                                 verbose++;
 871                                 break;
 872                         case 'N':
 873                                 noexecute++;
 874                                 break;
 875                         case 'R':
 876                                 skip_root++;
 877                                 break;
 878                         case 'T':
 879                                 notitle++;
 880                                 break;
 881                         case 'M':
 882                                 like_mount++;
 883                                 break;
 884                         case 'P':
 885                                 parallel_root++;
 886                                 break;
 887                         case 's':
 888                                 serialize++;
 889                                 break;
 890                         case 't':
 891                                 if (arg[j+1]) {
 892                                         fstype = string_copy(arg+j+1);
 893                                         goto next_arg;
 894                                 }
 895                                 if ((i+1) < argc) {
 896                                         i++;
 897                                         fstype = string_copy(argv[i]);
 898                                         goto next_arg;
 899                                 }
 900                                 usage();
 901                                 break;
 902                         case '-':
 903                                 opts_for_fsck++;
 904                                 break;
 905                         default:
 906                                 options[++opt] = arg[j];
 907                                 break;
 908                         }
 909                 }
 910         next_arg:
 911                 if (opt) {
 912                         options[0] = '-';
 913                         options[++opt] = '\0';
 914                         if (num_args >= MAX_ARGS) {
 915                                 fprintf(stderr,
 916                                         _("%s: too many arguments\n"),
 917                                         progname);
 918                                 exit(1);
 919                         }
 920                         args[num_args++] = string_copy(options);
 921                         opt = 0;
 922                 }
 923         }
 924         if (getenv("FSCK_FORCE_ALL_PARALLEL"))
 925                 force_all_parallel++;
 926 }
 927
 928 int main(int argc, char *argv[])
 929 {
 930         int i;
 931         int status = 0;
 932         int interactive = 0;
 933         char *oldpath = getenv("PATH");
 934         const char *fstab;
 935
 936 #ifdef ENABLE_NLS
 937         setlocale(LC_MESSAGES, "");
 938         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
 939         textdomain(NLS_CAT_NAME);
 940 #endif
 941         PRS(argc, argv);
 942
 943         if (!notitle)
 944                 printf(_("Parallelizing fsck version %s (%s)\n"),
 945                         E2FSPROGS_VERSION, E2FSPROGS_DATE);
 946
 947         fstab = getenv("FSTAB_FILE");
 948         if (!fstab)
 949                 fstab = _PATH_MNTTAB;
 950         load_fs_info(fstab);
 951
 952         /* Update our search path to include uncommon directories. */
 953         if (oldpath) {
 954                 fsck_path = malloc (strlen (fsck_prefix_path) + 1 +
 955                                     strlen (oldpath) + 1);
 956                 strcpy (fsck_path, fsck_prefix_path);
 957                 strcat (fsck_path, ":");
 958                 strcat (fsck_path, oldpath);
 959         } else {
 960                 fsck_path = string_copy(fsck_prefix_path);
 961         }
 962
 963         if ((num_devices == 1) || (serialize))
 964                 interactive = 1;
 965
 966         /* If -A was specified ("check all"), do that! */
 967         if (doall)
 968                 return check_all();
 969
 970         for (i = 0 ; i < num_devices; i++) {
 971                 fsck_device(devices[i], interactive);
 972                 if (serialize) {
 973                         struct fsck_instance *inst;
 974
 975                         inst = wait_one();
 976                         if (inst) {
 977                                 status |= inst->exit_status;
 978                                 free_instance(inst);
 979                         }
 980                 }
 981         }
 982         status |= wait_all();
 983         free(fsck_path);
 984         return status;
 985 }