misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 500 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <time.h>
  43 #include <unistd.h>
  44 #include <sys/types.h>
  45
  46 #include "ext2fs/ext2_fs.h"
  47 #include "ext2fs/ext2fs.h"
  48 #include "et/com_err.h"
  49 #include "uuid/uuid.h"
  50 #include "e2p/e2p.h"
  51 #include "jfs_user.h"
  52 #include "util.h"
  53 #include "blkid/blkid.h"
  54
  55 #include "../version.h"
  56 #include "nls-enable.h"
  57
  58 /*
  59  * Tune2fs supports these features in addition to the standard features.
  60  */
  61 #define EXT2_TUNE2FS_INCOMPAT   (EXT3_FEATURE_INCOMPAT_EXTENTS)
  62 #define EXT2_TUNE2FS_RO_COMPAT  (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
  63                                  EXT4_FEATURE_RO_COMPAT_GDT_CSUM|       \
  64                                  EXT4_FEATURE_RO_COMPAT_DIR_NLINK|      \
  65                                  EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
  66
  67
  68 const char * program_name = "tune2fs";
  69 char * device_name;
  70 char * new_label, *new_last_mounted, *new_UUID;
  71 char * io_options;
  72 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  73 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  74 static time_t last_check_time;
  75 static int print_label;
  76 static int max_mount_count, mount_count, mount_flags;
  77 static unsigned long interval, reserved_blocks;
  78 static double reserved_ratio;
  79 static unsigned long resgid, resuid;
  80 static unsigned short errors;
  81 static int open_flag;
  82 static char *features_cmd;
  83 static char *mntopts_cmd;
  84 static char *extended_cmd;
  85
  86 int journal_size, journal_flags;
  87 char *journal_device;
  88
  89 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
  90
  91 void do_findfs(int argc, char **argv);
  92
  93 static void usage(void)
  94 {
  95         fprintf(stderr,
  96                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
  97                   "[-g group]\n"
  98                   "\t[-i interval[d|m|w]] [-j] [-J journal_options]\n"
  99                   "\t[-l] [-s sparse_flag] [-m reserved_blocks_percent]\n"
 100                   "\t[-o [^]mount_options[,...]] [-r reserved_blocks_count]\n"
 101                   "\t[-u user] [-C mount_count] [-L volume_label]\n"
 102                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 103                   "\t[-E extended-option[,...]] [-T last_check_time] "
 104                   "[-U UUID] device\n"), program_name);
 105         exit (1);
 106 }
 107
 108 static __u32 ok_features[3] = {
 109         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 110                 EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
 111         EXT2_FEATURE_INCOMPAT_FILETYPE,         /* Incompat */
 112         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 113 };
 114
 115 /*
 116  * Remove an external journal from the filesystem
 117  */
 118 static void remove_journal_device(ext2_filsys fs)
 119 {
 120         char            *journal_path;
 121         ext2_filsys     jfs;
 122         char            buf[1024];
 123         journal_superblock_t    *jsb;
 124         int             i, nr_users;
 125         errcode_t       retval;
 126         int             commit_remove_journal = 0;
 127         io_manager      io_ptr;
 128
 129         if (f_flag)
 130                 commit_remove_journal = 1; /* force removal even if error */
 131
 132         uuid_unparse(fs->super->s_journal_uuid, buf);
 133         journal_path = blkid_get_devname(NULL, "UUID", buf);
 134
 135         if (!journal_path) {
 136                 journal_path =
 137                         ext2fs_find_block_device(fs->super->s_journal_dev);
 138                 if (!journal_path)
 139                         return;
 140         }
 141
 142 #ifdef CONFIG_TESTIO_DEBUG
 143         io_ptr = test_io_manager;
 144         test_io_backing_manager = unix_io_manager;
 145 #else
 146         io_ptr = unix_io_manager;
 147 #endif
 148         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 149                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 150                              fs->blocksize, io_ptr, &jfs);
 151         if (retval) {
 152                 com_err(program_name, retval,
 153                         _("while trying to open external journal"));
 154                 goto no_valid_journal;
 155         }
 156         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 157                 fprintf(stderr, _("%s is not a journal device.\n"),
 158                         journal_path);
 159                 goto no_valid_journal;
 160         }
 161
 162         /* Get the journal superblock */
 163         if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
 164                 com_err(program_name, retval,
 165                         _("while reading journal superblock"));
 166                 goto no_valid_journal;
 167         }
 168
 169         jsb = (journal_superblock_t *) buf;
 170         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 171             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 172                 fputs(_("Journal superblock not found!\n"), stderr);
 173                 goto no_valid_journal;
 174         }
 175
 176         /* Find the filesystem UUID */
 177         nr_users = ntohl(jsb->s_nr_users);
 178         for (i=0; i < nr_users; i++) {
 179                 if (memcmp(fs->super->s_uuid,
 180                            &jsb->s_users[i*16], 16) == 0)
 181                         break;
 182         }
 183         if (i >= nr_users) {
 184                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 185                       stderr);
 186                 commit_remove_journal = 1;
 187                 goto no_valid_journal;
 188         }
 189         nr_users--;
 190         for (i=0; i < nr_users; i++)
 191                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 192         jsb->s_nr_users = htonl(nr_users);
 193
 194         /* Write back the journal superblock */
 195         if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
 196                 com_err(program_name, retval,
 197                         "while writing journal superblock.");
 198                 goto no_valid_journal;
 199         }
 200
 201         commit_remove_journal = 1;
 202
 203 no_valid_journal:
 204         if (commit_remove_journal == 0) {
 205                 fputs(_("Journal NOT removed\n"), stderr);
 206                 exit(1);
 207         }
 208         fs->super->s_journal_dev = 0;
 209         uuid_clear(fs->super->s_journal_uuid);
 210         ext2fs_mark_super_dirty(fs);
 211         fputs(_("Journal removed\n"), stdout);
 212         free(journal_path);
 213 }
 214
 215 /* Helper function for remove_journal_inode */
 216 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 217                                int blockcnt EXT2FS_ATTR((unused)),
 218                                void *private EXT2FS_ATTR((unused)))
 219 {
 220         blk_t   block;
 221         int     group;
 222
 223         block = *blocknr;
 224         ext2fs_unmark_block_bitmap(fs->block_map,block);
 225         group = ext2fs_group_of_blk(fs, block);
 226         fs->group_desc[group].bg_free_blocks_count++;
 227         fs->super->s_free_blocks_count++;
 228         return 0;
 229 }
 230
 231 /*
 232  * Remove the journal inode from the filesystem
 233  */
 234 static void remove_journal_inode(ext2_filsys fs)
 235 {
 236         struct ext2_inode       inode;
 237         errcode_t               retval;
 238         ino_t                   ino = fs->super->s_journal_inum;
 239
 240         retval = ext2fs_read_inode(fs, ino,  &inode);
 241         if (retval) {
 242                 com_err(program_name, retval,
 243                         _("while reading journal inode"));
 244                 exit(1);
 245         }
 246         if (ino == EXT2_JOURNAL_INO) {
 247                 retval = ext2fs_read_bitmaps(fs);
 248                 if (retval) {
 249                         com_err(program_name, retval,
 250                                 _("while reading bitmaps"));
 251                         exit(1);
 252                 }
 253                 retval = ext2fs_block_iterate(fs, ino, 0, NULL,
 254                                               release_blocks_proc, NULL);
 255                 if (retval) {
 256                         com_err(program_name, retval,
 257                                 _("while clearing journal inode"));
 258                         exit(1);
 259                 }
 260                 memset(&inode, 0, sizeof(inode));
 261                 ext2fs_mark_bb_dirty(fs);
 262                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 263         } else
 264                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 265         retval = ext2fs_write_inode(fs, ino, &inode);
 266         if (retval) {
 267                 com_err(program_name, retval,
 268                         _("while writing journal inode"));
 269                 exit(1);
 270         }
 271         fs->super->s_journal_inum = 0;
 272         ext2fs_mark_super_dirty(fs);
 273 }
 274
 275 /*
 276  * Update the default mount options
 277  */
 278 static void update_mntopts(ext2_filsys fs, char *mntopts)
 279 {
 280         struct ext2_super_block *sb= fs->super;
 281
 282         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 283                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 284                         mntopts);
 285                 exit(1);
 286         }
 287         ext2fs_mark_super_dirty(fs);
 288 }
 289
 290 /*
 291  * Update the feature set as provided by the user.
 292  */
 293 static void update_feature_set(ext2_filsys fs, char *features)
 294 {
 295         int sparse, old_sparse, filetype, old_filetype;
 296         int journal, old_journal, dxdir, old_dxdir;
 297         struct ext2_super_block *sb= fs->super;
 298         __u32   old_compat, old_incompat, old_ro_compat;
 299
 300         old_compat = sb->s_feature_compat;
 301         old_ro_compat = sb->s_feature_ro_compat;
 302         old_incompat = sb->s_feature_incompat;
 303
 304         old_sparse = sb->s_feature_ro_compat &
 305                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 306         old_filetype = sb->s_feature_incompat &
 307                 EXT2_FEATURE_INCOMPAT_FILETYPE;
 308         old_journal = sb->s_feature_compat &
 309                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 310         old_dxdir = sb->s_feature_compat &
 311                 EXT2_FEATURE_COMPAT_DIR_INDEX;
 312         if (e2p_edit_feature(features, &sb->s_feature_compat,
 313                              ok_features)) {
 314                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 315                         features);
 316                 exit(1);
 317         }
 318         sparse = sb->s_feature_ro_compat &
 319                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 320         filetype = sb->s_feature_incompat &
 321                 EXT2_FEATURE_INCOMPAT_FILETYPE;
 322         journal = sb->s_feature_compat &
 323                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 324         dxdir = sb->s_feature_compat &
 325                 EXT2_FEATURE_COMPAT_DIR_INDEX;
 326         if (old_journal && !journal) {
 327                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 328                     !(mount_flags & EXT2_MF_READONLY)) {
 329                         fputs(_("The has_journal flag may only be "
 330                                 "cleared when the filesystem is\n"
 331                                 "unmounted or mounted "
 332                                 "read-only.\n"), stderr);
 333                         exit(1);
 334                 }
 335                 if (sb->s_feature_incompat &
 336                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 337                         fputs(_("The needs_recovery flag is set.  "
 338                                 "Please run e2fsck before clearing\n"
 339                                 "the has_journal flag.\n"), stderr);
 340                         exit(1);
 341                 }
 342                 if (sb->s_journal_inum) {
 343                         remove_journal_inode(fs);
 344                 }
 345                 if (sb->s_journal_dev) {
 346                         remove_journal_device(fs);
 347                 }
 348         }
 349         if (journal && !old_journal) {
 350                 /*
 351                  * If adding a journal flag, let the create journal
 352                  * code below handle creating setting the flag and
 353                  * creating the journal.  We supply a default size if
 354                  * necessary.
 355                  */
 356                 if (!journal_size)
 357                         journal_size = -1;
 358                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 359         }
 360         if (dxdir && !old_dxdir) {
 361                 if (!sb->s_def_hash_version)
 362                         sb->s_def_hash_version = EXT2_HASH_TEA;
 363                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 364                         uuid_generate((unsigned char *) sb->s_hash_seed);
 365         }
 366
 367         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 368             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 369              sb->s_feature_incompat))
 370                 ext2fs_update_dynamic_rev(fs);
 371         if ((sparse != old_sparse) ||
 372             (filetype != old_filetype)) {
 373                 sb->s_state &= ~EXT2_VALID_FS;
 374                 printf("\n%s\n", _(please_fsck));
 375         }
 376         if ((old_compat != sb->s_feature_compat) ||
 377             (old_ro_compat != sb->s_feature_ro_compat) ||
 378             (old_incompat != sb->s_feature_incompat))
 379                 ext2fs_mark_super_dirty(fs);
 380 }
 381
 382 /*
 383  * Add a journal to the filesystem.
 384  */
 385 static void add_journal(ext2_filsys fs)
 386 {
 387         unsigned long journal_blocks;
 388         errcode_t       retval;
 389         ext2_filsys     jfs;
 390         io_manager      io_ptr;
 391
 392         if (fs->super->s_feature_compat &
 393             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 394                 fputs(_("The filesystem already has a journal.\n"), stderr);
 395                 goto err;
 396         }
 397         if (journal_device) {
 398                 check_plausibility(journal_device);
 399                 check_mount(journal_device, 0, _("journal"));
 400 #ifdef CONFIG_TESTIO_DEBUG
 401                 io_ptr = test_io_manager;
 402                 test_io_backing_manager = unix_io_manager;
 403 #else
 404                 io_ptr = unix_io_manager;
 405 #endif
 406                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 407                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 408                                      fs->blocksize, io_ptr, &jfs);
 409                 if (retval) {
 410                         com_err(program_name, retval,
 411                                 _("\n\twhile trying to open journal on %s\n"),
 412                                 journal_device);
 413                         goto err;
 414                 }
 415                 printf(_("Creating journal on device %s: "),
 416                        journal_device);
 417                 fflush(stdout);
 418
 419                 retval = ext2fs_add_journal_device(fs, jfs);
 420                 ext2fs_close(jfs);
 421                 if (retval) {
 422                         com_err (program_name, retval,
 423                                  _("while adding filesystem to journal on %s"),
 424                                  journal_device);
 425                         goto err;
 426                 }
 427                 fputs(_("done\n"), stdout);
 428         } else if (journal_size) {
 429                 fputs(_("Creating journal inode: "), stdout);
 430                 fflush(stdout);
 431                 journal_blocks = figure_journal_size(journal_size, fs);
 432
 433                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 434                                                   journal_flags);
 435                 if (retval) {
 436                         fprintf(stderr, "\n");
 437                         com_err(program_name, retval,
 438                                 _("\n\twhile trying to create journal file"));
 439                         exit(1);
 440                 } else
 441                         fputs(_("done\n"), stdout);
 442                 /*
 443                  * If the filesystem wasn't mounted, we need to force
 444                  * the block group descriptors out.
 445                  */
 446                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 447                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 448         }
 449         print_check_message(fs);
 450         return;
 451
 452 err:
 453         if (journal_device)
 454                 free(journal_device);
 455         exit(1);
 456 }
 457
 458
 459 static void parse_e2label_options(int argc, char ** argv)
 460 {
 461         if ((argc < 2) || (argc > 3)) {
 462                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 463                 exit(1);
 464         }
 465         io_options = strchr(argv[1], '?');
 466         if (io_options)
 467                 *io_options++ = 0;
 468         device_name = blkid_get_devname(NULL, argv[1], NULL);
 469         if (!device_name) {
 470                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 471                         argv[1]);
 472                 exit(1);
 473         }
 474         open_flag = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_JOURNAL_DEV_OK;
 475         if (argc == 3) {
 476                 open_flag |= EXT2_FLAG_RW;
 477                 L_flag = 1;
 478                 new_label = argv[2];
 479         } else
 480                 print_label++;
 481 }
 482
 483 static time_t parse_time(char *str)
 484 {
 485         struct  tm      ts;
 486
 487         if (strcmp(str, "now") == 0) {
 488                 return (time(0));
 489         }
 490         memset(&ts, 0, sizeof(ts));
 491 #ifdef HAVE_STRPTIME
 492         strptime(str, "%Y%m%d%H%M%S", &ts);
 493 #else
 494         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 495                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 496         ts.tm_year -= 1900;
 497         ts.tm_mon -= 1;
 498         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 499             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 500             ts.tm_min > 59 || ts.tm_sec > 61)
 501                 ts.tm_mday = 0;
 502 #endif
 503         if (ts.tm_mday == 0) {
 504                 com_err(program_name, 0,
 505                         _("Couldn't parse date/time specifier: %s"),
 506                         str);
 507                 usage();
 508         }
 509         return (mktime(&ts));
 510 }
 511
 512 static void parse_tune2fs_options(int argc, char **argv)
 513 {
 514         int c;
 515         char * tmp;
 516         struct group * gr;
 517         struct passwd * pw;
 518
 519         open_flag = EXT2_FLAG_SOFTSUPP_FEATURES;
 520
 521         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 522         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:J:L:M:O:T:U:")) != EOF)
 523                 switch (c)
 524                 {
 525                         case 'c':
 526                                 max_mount_count = strtol (optarg, &tmp, 0);
 527                                 if (*tmp || max_mount_count > 16000) {
 528                                         com_err (program_name, 0,
 529                                                  _("bad mounts count - %s"),
 530                                                  optarg);
 531                                         usage();
 532                                 }
 533                                 if (max_mount_count == 0)
 534                                         max_mount_count = -1;
 535                                 c_flag = 1;
 536                                 open_flag = EXT2_FLAG_RW;
 537                                 break;
 538                         case 'C':
 539                                 mount_count = strtoul (optarg, &tmp, 0);
 540                                 if (*tmp || mount_count > 16000) {
 541                                         com_err (program_name, 0,
 542                                                  _("bad mounts count - %s"),
 543                                                  optarg);
 544                                         usage();
 545                                 }
 546                                 C_flag = 1;
 547                                 open_flag = EXT2_FLAG_RW;
 548                                 break;
 549                         case 'e':
 550                                 if (strcmp (optarg, "continue") == 0)
 551                                         errors = EXT2_ERRORS_CONTINUE;
 552                                 else if (strcmp (optarg, "remount-ro") == 0)
 553                                         errors = EXT2_ERRORS_RO;
 554                                 else if (strcmp (optarg, "panic") == 0)
 555                                         errors = EXT2_ERRORS_PANIC;
 556                                 else {
 557                                         com_err (program_name, 0,
 558                                                  _("bad error behavior - %s"),
 559                                                  optarg);
 560                                         usage();
 561                                 }
 562                                 e_flag = 1;
 563                                 open_flag = EXT2_FLAG_RW;
 564                                 break;
 565                         case 'E':
 566                                 extended_cmd = optarg;
 567                                 open_flag |= EXT2_FLAG_RW;
 568                                 break;
 569                         case 'f': /* Force */
 570                                 f_flag = 1;
 571                                 break;
 572                         case 'g':
 573                                 resgid = strtoul (optarg, &tmp, 0);
 574                                 if (*tmp) {
 575                                         gr = getgrnam (optarg);
 576                                         if (gr == NULL)
 577                                                 tmp = optarg;
 578                                         else {
 579                                                 resgid = gr->gr_gid;
 580                                                 *tmp =0;
 581                                         }
 582                                 }
 583                                 if (*tmp) {
 584                                         com_err (program_name, 0,
 585                                                  _("bad gid/group name - %s"),
 586                                                  optarg);
 587                                         usage();
 588                                 }
 589                                 g_flag = 1;
 590                                 open_flag = EXT2_FLAG_RW;
 591                                 break;
 592                         case 'i':
 593                                 interval = strtoul (optarg, &tmp, 0);
 594                                 switch (*tmp) {
 595                                 case 's':
 596                                         tmp++;
 597                                         break;
 598                                 case '\0':
 599                                 case 'd':
 600                                 case 'D': /* days */
 601                                         interval *= 86400;
 602                                         if (*tmp != '\0')
 603                                                 tmp++;
 604                                         break;
 605                                 case 'm':
 606                                 case 'M': /* months! */
 607                                         interval *= 86400 * 30;
 608                                         tmp++;
 609                                         break;
 610                                 case 'w':
 611                                 case 'W': /* weeks */
 612                                         interval *= 86400 * 7;
 613                                         tmp++;
 614                                         break;
 615                                 }
 616                                 if (*tmp) {
 617                                         com_err (program_name, 0,
 618                                                 _("bad interval - %s"), optarg);
 619                                         usage();
 620                                 }
 621                                 i_flag = 1;
 622                                 open_flag = EXT2_FLAG_RW;
 623                                 break;
 624                         case 'j':
 625                                 if (!journal_size)
 626                                         journal_size = -1;
 627                                 open_flag = EXT2_FLAG_RW;
 628                                 break;
 629                         case 'J':
 630                                 parse_journal_opts(optarg);
 631                                 open_flag = EXT2_FLAG_RW;
 632                                 break;
 633                         case 'l':
 634                                 l_flag = 1;
 635                                 break;
 636                         case 'L':
 637                                 new_label = optarg;
 638                                 L_flag = 1;
 639                                 open_flag |= EXT2_FLAG_RW |
 640                                         EXT2_FLAG_JOURNAL_DEV_OK;
 641                                 break;
 642                         case 'm':
 643                                 reserved_ratio = strtod(optarg, &tmp);
 644                                 if (*tmp || reserved_ratio > 50) {
 645                                         com_err (program_name, 0,
 646                                                  _("bad reserved block ratio - %s"),
 647                                                  optarg);
 648                                         usage();
 649                                 }
 650                                 m_flag = 1;
 651                                 open_flag = EXT2_FLAG_RW;
 652                                 break;
 653                         case 'M':
 654                                 new_last_mounted = optarg;
 655                                 M_flag = 1;
 656                                 open_flag = EXT2_FLAG_RW;
 657                                 break;
 658                         case 'o':
 659                                 if (mntopts_cmd) {
 660                                         com_err (program_name, 0,
 661                                          _("-o may only be specified once"));
 662                                         usage();
 663                                 }
 664                                 mntopts_cmd = optarg;
 665                                 open_flag = EXT2_FLAG_RW;
 666                                 break;
 667
 668                         case 'O':
 669                                 if (features_cmd) {
 670                                         com_err (program_name, 0,
 671                                          _("-O may only be specified once"));
 672                                         usage();
 673                                 }
 674                                 features_cmd = optarg;
 675                                 open_flag = EXT2_FLAG_RW;
 676                                 break;
 677                         case 'r':
 678                                 reserved_blocks = strtoul (optarg, &tmp, 0);
 679                                 if (*tmp) {
 680                                         com_err (program_name, 0,
 681                                                  _("bad reserved blocks count - %s"),
 682                                                  optarg);
 683                                         usage();
 684                                 }
 685                                 r_flag = 1;
 686                                 open_flag = EXT2_FLAG_RW;
 687                                 break;
 688                         case 's':
 689                                 s_flag = atoi(optarg);
 690                                 open_flag = EXT2_FLAG_RW;
 691                                 break;
 692                         case 'T':
 693                                 T_flag = 1;
 694                                 last_check_time = parse_time(optarg);
 695                                 open_flag = EXT2_FLAG_RW;
 696                                 break;
 697                         case 'u':
 698                                 resuid = strtoul (optarg, &tmp, 0);
 699                                 if (*tmp) {
 700                                         pw = getpwnam (optarg);
 701                                         if (pw == NULL)
 702                                                 tmp = optarg;
 703                                         else {
 704                                                 resuid = pw->pw_uid;
 705                                                 *tmp = 0;
 706                                         }
 707                                 }
 708                                 if (*tmp) {
 709                                         com_err (program_name, 0,
 710                                                  _("bad uid/user name - %s"),
 711                                                  optarg);
 712                                         usage();
 713                                 }
 714                                 u_flag = 1;
 715                                 open_flag = EXT2_FLAG_RW;
 716                                 break;
 717                         case 'U':
 718                                 new_UUID = optarg;
 719                                 U_flag = 1;
 720                                 open_flag = EXT2_FLAG_RW |
 721                                         EXT2_FLAG_JOURNAL_DEV_OK;
 722                                 break;
 723                         default:
 724                                 usage();
 725                 }
 726         if (optind < argc - 1 || optind == argc)
 727                 usage();
 728         if (!open_flag && !l_flag)
 729                 usage();
 730         io_options = strchr(argv[optind], '?');
 731         if (io_options)
 732                 *io_options++ = 0;
 733         device_name = blkid_get_devname(NULL, argv[optind], NULL);
 734         if (!device_name) {
 735                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
 736                         argv[optind]);
 737                 exit(1);
 738         }
 739 }
 740
 741 void do_findfs(int argc, char **argv)
 742 {
 743         char    *dev;
 744
 745         if ((argc != 2) ||
 746             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
 747                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
 748                 exit(2);
 749         }
 750         dev = blkid_get_devname(NULL, argv[1], NULL);
 751         if (!dev) {
 752                 com_err("findfs", 0, _("Unable to resolve '%s'"),
 753                         argv[1]);
 754                 exit(1);
 755         }
 756         puts(dev);
 757         exit(0);
 758 }
 759
 760 /*
 761  * Note!  If any extended options are incompatible with the
 762  * intersection of the SOFTSUPP features and those features explicitly
 763  * enabled for tune2fs, there needs to be an explicit test for them
 764  * here.
 765  */
 766 static void parse_extended_opts(ext2_filsys fs, const char *opts)
 767 {
 768         char    *buf, *token, *next, *p, *arg;
 769         int     len;
 770         int     r_usage = 0;
 771
 772         len = strlen(opts);
 773         buf = malloc(len+1);
 774         if (!buf) {
 775                 fprintf(stderr,
 776                         _("Couldn't allocate memory to parse options!\n"));
 777                 exit(1);
 778         }
 779         strcpy(buf, opts);
 780         for (token = buf; token && *token; token = next) {
 781                 p = strchr(token, ',');
 782                 next = 0;
 783                 if (p) {
 784                         *p = 0;
 785                         next = p+1;
 786                 }
 787                 arg = strchr(token, '=');
 788                 if (arg) {
 789                         *arg = 0;
 790                         arg++;
 791                 }
 792                 if (!strcmp(token, "test_fs")) {
 793                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 794                         printf("Setting test filesystem flag\n");
 795                         ext2fs_mark_super_dirty(fs);
 796                 } else if (!strcmp(token, "^test_fs")) {
 797                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
 798                         printf("Clearing test filesystem flag\n");
 799                         ext2fs_mark_super_dirty(fs);
 800                 } else
 801                         r_usage++;
 802         }
 803         if (r_usage) {
 804                 fprintf(stderr, _("\nBad options specified.\n\n"
 805                         "Extended options are separated by commas, "
 806                         "and may take an argument which\n"
 807                         "\tis set off by an equals ('=') sign.\n\n"
 808                         "Valid extended options are:\n"
 809                         "\ttest_fs\n"
 810                         "\t^test_fs\n"));
 811                 free(buf);
 812                 exit(1);
 813         }
 814         free(buf);
 815 }
 816
 817
 818 int main (int argc, char ** argv)
 819 {
 820         errcode_t retval;
 821         ext2_filsys fs;
 822         struct ext2_super_block *sb;
 823         io_manager io_ptr;
 824
 825 #ifdef ENABLE_NLS
 826         setlocale(LC_MESSAGES, "");
 827         setlocale(LC_CTYPE, "");
 828         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
 829         textdomain(NLS_CAT_NAME);
 830 #endif
 831         if (argc && *argv)
 832                 program_name = *argv;
 833         add_error_table(&et_ext2_error_table);
 834
 835         if (strcmp(get_progname(argv[0]), "findfs") == 0)
 836                 do_findfs(argc, argv);
 837         if (strcmp(get_progname(argv[0]), "e2label") == 0)
 838                 parse_e2label_options(argc, argv);
 839         else
 840                 parse_tune2fs_options(argc, argv);
 841
 842 #ifdef CONFIG_TESTIO_DEBUG
 843         io_ptr = test_io_manager;
 844         test_io_backing_manager = unix_io_manager;
 845 #else
 846         io_ptr = unix_io_manager;
 847 #endif
 848         retval = ext2fs_open2(device_name, io_options, open_flag,
 849                               0, 0, io_ptr, &fs);
 850         if (retval) {
 851                 com_err (program_name, retval, _("while trying to open %s"),
 852                          device_name);
 853                 fprintf(stderr,
 854                         _("Couldn't find valid filesystem superblock.\n"));
 855                 exit(1);
 856         }
 857         sb = fs->super;
 858         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 859         if ((sb->s_feature_incompat & !EXT2_TUNE2FS_INCOMPAT) ||
 860             (sb->s_feature_ro_compat & !EXT2_TUNE2FS_RO_COMPAT)) {
 861                 fprintf(stderr,
 862                         _("Filesystem %s has unsupported features enabled.\n"),
 863                         device_name);
 864                 exit(1);
 865         }
 866         if (print_label) {
 867                 /* For e2label emulation */
 868                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
 869                        sb->s_volume_name);
 870                 remove_error_table(&et_ext2_error_table);
 871                 exit(0);
 872         }
 873         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
 874         if (retval) {
 875                 com_err("ext2fs_check_if_mount", retval,
 876                         _("while determining whether %s is mounted."),
 877                         device_name);
 878                 exit(1);
 879         }
 880         /* Normally we only need to write out the superblock */
 881         fs->flags |= EXT2_FLAG_SUPER_ONLY;
 882
 883         if (c_flag) {
 884                 sb->s_max_mnt_count = max_mount_count;
 885                 ext2fs_mark_super_dirty(fs);
 886                 printf (_("Setting maximal mount count to %d\n"),
 887                         max_mount_count);
 888         }
 889         if (C_flag) {
 890                 sb->s_mnt_count = mount_count;
 891                 ext2fs_mark_super_dirty(fs);
 892                 printf (_("Setting current mount count to %d\n"), mount_count);
 893         }
 894         if (e_flag) {
 895                 sb->s_errors = errors;
 896                 ext2fs_mark_super_dirty(fs);
 897                 printf (_("Setting error behavior to %d\n"), errors);
 898         }
 899         if (g_flag) {
 900                 sb->s_def_resgid = resgid;
 901                 ext2fs_mark_super_dirty(fs);
 902                 printf (_("Setting reserved blocks gid to %lu\n"), resgid);
 903         }
 904         if (i_flag) {
 905                 sb->s_checkinterval = interval;
 906                 ext2fs_mark_super_dirty(fs);
 907                 printf (_("Setting interval between checks to %lu seconds\n"), interval);
 908         }
 909         if (m_flag) {
 910                 sb->s_r_blocks_count = e2p_percent(reserved_ratio,
 911                                                    sb->s_blocks_count);
 912                 ext2fs_mark_super_dirty(fs);
 913                 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
 914                         reserved_ratio, sb->s_r_blocks_count);
 915         }
 916         if (r_flag) {
 917                 if (reserved_blocks >= sb->s_blocks_count/2) {
 918                         com_err (program_name, 0,
 919                                  _("reserved blocks count is too big (%lu)"),
 920                                  reserved_blocks);
 921                         exit (1);
 922                 }
 923                 sb->s_r_blocks_count = reserved_blocks;
 924                 ext2fs_mark_super_dirty(fs);
 925                 printf (_("Setting reserved blocks count to %lu\n"),
 926                         reserved_blocks);
 927         }
 928         if (s_flag == 1) {
 929                 if (sb->s_feature_ro_compat &
 930                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
 931                         fputs(_("\nThe filesystem already has sparse "
 932                                 "superblocks.\n"), stderr);
 933                 else {
 934                         sb->s_feature_ro_compat |=
 935                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 936                         sb->s_state &= ~EXT2_VALID_FS;
 937                         ext2fs_mark_super_dirty(fs);
 938                         printf(_("\nSparse superblock flag set.  %s"),
 939                                _(please_fsck));
 940                 }
 941         }
 942         if (s_flag == 0) {
 943                 if (!(sb->s_feature_ro_compat &
 944                       EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
 945                         fputs(_("\nThe filesystem already has sparse "
 946                                 "superblocks disabled.\n"), stderr);
 947                 else {
 948                         sb->s_feature_ro_compat &=
 949                                 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 950                         sb->s_state &= ~EXT2_VALID_FS;
 951                         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
 952                         ext2fs_mark_super_dirty(fs);
 953                         printf(_("\nSparse superblock flag cleared.  %s"),
 954                                _(please_fsck));
 955                 }
 956         }
 957         if (T_flag) {
 958                 sb->s_lastcheck = last_check_time;
 959                 ext2fs_mark_super_dirty(fs);
 960                 printf(_("Setting time filesystem last checked to %s\n"),
 961                        ctime(&last_check_time));
 962         }
 963         if (u_flag) {
 964                 sb->s_def_resuid = resuid;
 965                 ext2fs_mark_super_dirty(fs);
 966                 printf (_("Setting reserved blocks uid to %lu\n"), resuid);
 967         }
 968         if (L_flag) {
 969                 if (strlen(new_label) > sizeof(sb->s_volume_name))
 970                         fputs(_("Warning: label too long, truncating.\n"),
 971                               stderr);
 972                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
 973                 strncpy(sb->s_volume_name, new_label,
 974                         sizeof(sb->s_volume_name));
 975                 ext2fs_mark_super_dirty(fs);
 976         }
 977         if (M_flag) {
 978                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
 979                 strncpy(sb->s_last_mounted, new_last_mounted,
 980                         sizeof(sb->s_last_mounted));
 981                 ext2fs_mark_super_dirty(fs);
 982         }
 983         if (mntopts_cmd)
 984                 update_mntopts(fs, mntopts_cmd);
 985         if (features_cmd)
 986                 update_feature_set(fs, features_cmd);
 987         if (extended_cmd)
 988                 parse_extended_opts(fs, extended_cmd);
 989         if (journal_size || journal_device)
 990                 add_journal(fs);
 991
 992         if (U_flag) {
 993                 if ((strcasecmp(new_UUID, "null") == 0) ||
 994                     (strcasecmp(new_UUID, "clear") == 0)) {
 995                         uuid_clear(sb->s_uuid);
 996                 } else if (strcasecmp(new_UUID, "time") == 0) {
 997                         uuid_generate_time(sb->s_uuid);
 998                 } else if (strcasecmp(new_UUID, "random") == 0) {
 999                         uuid_generate(sb->s_uuid);
1000                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1001                         com_err(program_name, 0, _("Invalid UUID format\n"));
1002                         exit(1);
1003                 }
1004                 ext2fs_mark_super_dirty(fs);
1005         }
1006
1007         if (l_flag)
1008                 list_super (sb);
1009         remove_error_table(&et_ext2_error_table);
1010         return (ext2fs_close (fs) ? 1 : 0);
1011 }