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 600 /* 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 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #include <string.h>
  44 #include <time.h>
  45 #include <unistd.h>
  46 #include <sys/types.h>
  47 #include <libgen.h>
  48 #include <limits.h>
  49
  50 #include "ext2fs/ext2_fs.h"
  51 #include "ext2fs/ext2fs.h"
  52 #include "et/com_err.h"
  53 #include "uuid/uuid.h"
  54 #include "e2p/e2p.h"
  55 #include "jfs_user.h"
  56 #include "util.h"
  57 #include "blkid/blkid.h"
  58
  59 #include "../version.h"
  60 #include "nls-enable.h"
  61
  62 const char * program_name = "tune2fs";
  63 char * device_name;
  64 char * new_label, *new_last_mounted, *new_UUID;
  65 char * io_options;
  66 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  67 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  68 static int I_flag;
  69 static time_t last_check_time;
  70 static int print_label;
  71 static int max_mount_count, mount_count, mount_flags;
  72 static unsigned long interval, reserved_blocks;
  73 static double reserved_ratio;
  74 static unsigned long resgid, resuid;
  75 static unsigned short errors;
  76 static int open_flag;
  77 static char *features_cmd;
  78 static char *mntopts_cmd;
  79 static int stride, stripe_width;
  80 static int stride_set, stripe_width_set;
  81 static char *extended_cmd;
  82 static unsigned long new_inode_size;
  83
  84 int journal_size, journal_flags;
  85 char *journal_device;
  86
  87 static struct list_head blk_move_list;
  88
  89 struct blk_move {
  90         struct list_head list;
  91         blk_t old_loc;
  92         blk_t new_loc;
  93 };
  94
  95
  96 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
  97
  98 void do_findfs(int argc, char **argv);
  99
 100 static void usage(void)
 101 {
 102         fprintf(stderr,
 103                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 104                   "[-g group]\n"
 105                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 106                   "\t[-m reserved_blocks_percent] "
 107                   "[-o [^]mount_options[,...]] \n"
 108                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 109                   "[-L volume_label]\n"
 110                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 111                   "\t[-E extended-option[,...]] [-T last_check_time] "
 112                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 113         exit (1);
 114 }
 115
 116 static __u32 ok_features[3] = {
 117         /* Compat */
 118         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 119                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 120         /* Incompat */
 121         EXT2_FEATURE_INCOMPAT_FILETYPE |
 122                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 123                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 124         /* R/O compat */
 125         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 126                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 127                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 128                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 129                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 130                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 131 };
 132
 133 static __u32 clear_ok_features[3] = {
 134         /* Compat */
 135         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 136                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 137                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 138         /* Incompat */
 139         EXT2_FEATURE_INCOMPAT_FILETYPE |
 140                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 141         /* R/O compat */
 142         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 143                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 144                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 145                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 146                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 147 };
 148
 149 /*
 150  * Remove an external journal from the filesystem
 151  */
 152 static void remove_journal_device(ext2_filsys fs)
 153 {
 154         char            *journal_path;
 155         ext2_filsys     jfs;
 156         char            buf[1024];
 157         journal_superblock_t    *jsb;
 158         int             i, nr_users;
 159         errcode_t       retval;
 160         int             commit_remove_journal = 0;
 161         io_manager      io_ptr;
 162
 163         if (f_flag)
 164                 commit_remove_journal = 1; /* force removal even if error */
 165
 166         uuid_unparse(fs->super->s_journal_uuid, buf);
 167         journal_path = blkid_get_devname(NULL, "UUID", buf);
 168
 169         if (!journal_path) {
 170                 journal_path =
 171                         ext2fs_find_block_device(fs->super->s_journal_dev);
 172                 if (!journal_path)
 173                         return;
 174         }
 175
 176 #ifdef CONFIG_TESTIO_DEBUG
 177         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 178                 io_ptr = test_io_manager;
 179                 test_io_backing_manager = unix_io_manager;
 180         } else
 181 #endif
 182                 io_ptr = unix_io_manager;
 183         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 184                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 185                              fs->blocksize, io_ptr, &jfs);
 186         if (retval) {
 187                 com_err(program_name, retval,
 188                         _("while trying to open external journal"));
 189                 goto no_valid_journal;
 190         }
 191         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 192                 fprintf(stderr, _("%s is not a journal device.\n"),
 193                         journal_path);
 194                 goto no_valid_journal;
 195         }
 196
 197         /* Get the journal superblock */
 198         if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
 199                 com_err(program_name, retval,
 200                         _("while reading journal superblock"));
 201                 goto no_valid_journal;
 202         }
 203
 204         jsb = (journal_superblock_t *) buf;
 205         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 206             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 207                 fputs(_("Journal superblock not found!\n"), stderr);
 208                 goto no_valid_journal;
 209         }
 210
 211         /* Find the filesystem UUID */
 212         nr_users = ntohl(jsb->s_nr_users);
 213         for (i=0; i < nr_users; i++) {
 214                 if (memcmp(fs->super->s_uuid,
 215                            &jsb->s_users[i*16], 16) == 0)
 216                         break;
 217         }
 218         if (i >= nr_users) {
 219                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 220                       stderr);
 221                 commit_remove_journal = 1;
 222                 goto no_valid_journal;
 223         }
 224         nr_users--;
 225         for (i=0; i < nr_users; i++)
 226                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 227         jsb->s_nr_users = htonl(nr_users);
 228
 229         /* Write back the journal superblock */
 230         if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
 231                 com_err(program_name, retval,
 232                         "while writing journal superblock.");
 233                 goto no_valid_journal;
 234         }
 235
 236         commit_remove_journal = 1;
 237
 238 no_valid_journal:
 239         if (commit_remove_journal == 0) {
 240                 fputs(_("Journal NOT removed\n"), stderr);
 241                 exit(1);
 242         }
 243         fs->super->s_journal_dev = 0;
 244         uuid_clear(fs->super->s_journal_uuid);
 245         ext2fs_mark_super_dirty(fs);
 246         fputs(_("Journal removed\n"), stdout);
 247         free(journal_path);
 248 }
 249
 250 /* Helper function for remove_journal_inode */
 251 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 252                                int blockcnt EXT2FS_ATTR((unused)),
 253                                void *private EXT2FS_ATTR((unused)))
 254 {
 255         blk_t   block;
 256         int     group;
 257
 258         block = *blocknr;
 259         ext2fs_unmark_block_bitmap(fs->block_map,block);
 260         group = ext2fs_group_of_blk(fs, block);
 261         fs->group_desc[group].bg_free_blocks_count++;
 262         ext2fs_group_desc_csum_set(fs, group);
 263         fs->super->s_free_blocks_count++;
 264         return 0;
 265 }
 266
 267 /*
 268  * Remove the journal inode from the filesystem
 269  */
 270 static void remove_journal_inode(ext2_filsys fs)
 271 {
 272         struct ext2_inode       inode;
 273         errcode_t               retval;
 274         ino_t                   ino = fs->super->s_journal_inum;
 275
 276         retval = ext2fs_read_inode(fs, ino,  &inode);
 277         if (retval) {
 278                 com_err(program_name, retval,
 279                         _("while reading journal inode"));
 280                 exit(1);
 281         }
 282         if (ino == EXT2_JOURNAL_INO) {
 283                 retval = ext2fs_read_bitmaps(fs);
 284                 if (retval) {
 285                         com_err(program_name, retval,
 286                                 _("while reading bitmaps"));
 287                         exit(1);
 288                 }
 289                 retval = ext2fs_block_iterate(fs, ino,
 290                                               BLOCK_FLAG_READ_ONLY, NULL,
 291                                               release_blocks_proc, NULL);
 292                 if (retval) {
 293                         com_err(program_name, retval,
 294                                 _("while clearing journal inode"));
 295                         exit(1);
 296                 }
 297                 memset(&inode, 0, sizeof(inode));
 298                 ext2fs_mark_bb_dirty(fs);
 299                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 300         } else
 301                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 302         retval = ext2fs_write_inode(fs, ino, &inode);
 303         if (retval) {
 304                 com_err(program_name, retval,
 305                         _("while writing journal inode"));
 306                 exit(1);
 307         }
 308         fs->super->s_journal_inum = 0;
 309         ext2fs_mark_super_dirty(fs);
 310 }
 311
 312 /*
 313  * Update the default mount options
 314  */
 315 static void update_mntopts(ext2_filsys fs, char *mntopts)
 316 {
 317         struct ext2_super_block *sb= fs->super;
 318
 319         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 320                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 321                         mntopts);
 322                 exit(1);
 323         }
 324         ext2fs_mark_super_dirty(fs);
 325 }
 326
 327 /*
 328  * Update the feature set as provided by the user.
 329  */
 330 static void update_feature_set(ext2_filsys fs, char *features)
 331 {
 332         struct ext2_super_block *sb= fs->super;
 333         __u32           old_features[3];
 334         int             type_err;
 335         unsigned int    mask_err;
 336
 337 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 338                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 339 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 340                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 341 #define FEATURE_CHANGED(type, mask) ((mask) & \
 342                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 343
 344         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 345         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 346         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 347
 348         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 349                               ok_features, clear_ok_features,
 350                               &type_err, &mask_err)) {
 351                 if (!mask_err)
 352                         fprintf(stderr,
 353                                 _("Invalid filesystem option set: %s\n"),
 354                                 features);
 355                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 356                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 357                                           "not supported.\n"),
 358                                 e2p_feature2string(type_err &
 359                                                    E2P_FEATURE_TYPE_MASK,
 360                                                    mask_err));
 361                 else
 362                         fprintf(stderr, _("Setting filesystem feature '%s' "
 363                                           "not supported.\n"),
 364                                 e2p_feature2string(type_err, mask_err));
 365                 exit(1);
 366         }
 367
 368         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 369                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 370                     !(mount_flags & EXT2_MF_READONLY)) {
 371                         fputs(_("The has_journal feature may only be "
 372                                 "cleared when the filesystem is\n"
 373                                 "unmounted or mounted "
 374                                 "read-only.\n"), stderr);
 375                         exit(1);
 376                 }
 377                 if (sb->s_feature_incompat &
 378                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 379                         fputs(_("The needs_recovery flag is set.  "
 380                                 "Please run e2fsck before clearing\n"
 381                                 "the has_journal flag.\n"), stderr);
 382                         exit(1);
 383                 }
 384                 if (sb->s_journal_inum) {
 385                         remove_journal_inode(fs);
 386                 }
 387                 if (sb->s_journal_dev) {
 388                         remove_journal_device(fs);
 389                 }
 390         }
 391
 392         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 393                 /*
 394                  * If adding a journal flag, let the create journal
 395                  * code below handle setting the flag and creating the
 396                  * journal.  We supply a default size if necessary.
 397                  */
 398                 if (!journal_size)
 399                         journal_size = -1;
 400                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 401         }
 402
 403         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 404                 if (!sb->s_def_hash_version)
 405                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 406                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 407                         uuid_generate((unsigned char *) sb->s_hash_seed);
 408         }
 409
 410         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 411                 if (ext2fs_check_desc(fs)) {
 412                         fputs(_("Clearing the flex_bg flag would "
 413                                 "cause the the filesystem to be\n"
 414                                 "inconsistent.\n"), stderr);
 415                         exit(1);
 416                 }
 417         }
 418
 419         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 420                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 421                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 422                     !(mount_flags & EXT2_MF_READONLY)) {
 423                         fputs(_("The huge_file feature may only be "
 424                                 "cleared when the filesystem is\n"
 425                                 "unmounted or mounted "
 426                                 "read-only.\n"), stderr);
 427                         exit(1);
 428                 }
 429         }
 430
 431         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 432             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 433              sb->s_feature_incompat))
 434                 ext2fs_update_dynamic_rev(fs);
 435
 436         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 437                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 438             FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 439                             EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
 440             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 441                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 442             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 443                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 444             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 445                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 446             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 447                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
 448                 sb->s_state &= ~EXT2_VALID_FS;
 449                 printf("\n%s\n", _(please_fsck));
 450                 if (mount_flags & EXT2_MF_READONLY)
 451                         printf(_("(and reboot afterwards!)\n"));
 452         }
 453
 454         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 455             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 456             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 457                 ext2fs_mark_super_dirty(fs);
 458 }
 459
 460 /*
 461  * Add a journal to the filesystem.
 462  */
 463 static void add_journal(ext2_filsys fs)
 464 {
 465         unsigned long journal_blocks;
 466         errcode_t       retval;
 467         ext2_filsys     jfs;
 468         io_manager      io_ptr;
 469
 470         if (fs->super->s_feature_compat &
 471             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 472                 fputs(_("The filesystem already has a journal.\n"), stderr);
 473                 goto err;
 474         }
 475         if (journal_device) {
 476                 check_plausibility(journal_device);
 477                 check_mount(journal_device, 0, _("journal"));
 478 #ifdef CONFIG_TESTIO_DEBUG
 479                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 480                         io_ptr = test_io_manager;
 481                         test_io_backing_manager = unix_io_manager;
 482                 } else
 483 #endif
 484                         io_ptr = unix_io_manager;
 485                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 486                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 487                                      fs->blocksize, io_ptr, &jfs);
 488                 if (retval) {
 489                         com_err(program_name, retval,
 490                                 _("\n\twhile trying to open journal on %s\n"),
 491                                 journal_device);
 492                         goto err;
 493                 }
 494                 printf(_("Creating journal on device %s: "),
 495                        journal_device);
 496                 fflush(stdout);
 497
 498                 retval = ext2fs_add_journal_device(fs, jfs);
 499                 ext2fs_close(jfs);
 500                 if (retval) {
 501                         com_err (program_name, retval,
 502                                  _("while adding filesystem to journal on %s"),
 503                                  journal_device);
 504                         goto err;
 505                 }
 506                 fputs(_("done\n"), stdout);
 507         } else if (journal_size) {
 508                 fputs(_("Creating journal inode: "), stdout);
 509                 fflush(stdout);
 510                 journal_blocks = figure_journal_size(journal_size, fs);
 511
 512                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 513                                                   journal_flags);
 514                 if (retval) {
 515                         fprintf(stderr, "\n");
 516                         com_err(program_name, retval,
 517                                 _("\n\twhile trying to create journal file"));
 518                         exit(1);
 519                 } else
 520                         fputs(_("done\n"), stdout);
 521                 /*
 522                  * If the filesystem wasn't mounted, we need to force
 523                  * the block group descriptors out.
 524                  */
 525                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 526                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 527         }
 528         print_check_message(fs);
 529         return;
 530
 531 err:
 532         if (journal_device)
 533                 free(journal_device);
 534         exit(1);
 535 }
 536
 537
 538 static void parse_e2label_options(int argc, char ** argv)
 539 {
 540         if ((argc < 2) || (argc > 3)) {
 541                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 542                 exit(1);
 543         }
 544         io_options = strchr(argv[1], '?');
 545         if (io_options)
 546                 *io_options++ = 0;
 547         device_name = blkid_get_devname(NULL, argv[1], NULL);
 548         if (!device_name) {
 549                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 550                         argv[1]);
 551                 exit(1);
 552         }
 553         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 554         if (argc == 3) {
 555                 open_flag |= EXT2_FLAG_RW;
 556                 L_flag = 1;
 557                 new_label = argv[2];
 558         } else
 559                 print_label++;
 560 }
 561
 562 static time_t parse_time(char *str)
 563 {
 564         struct  tm      ts;
 565
 566         if (strcmp(str, "now") == 0) {
 567                 return (time(0));
 568         }
 569         memset(&ts, 0, sizeof(ts));
 570 #ifdef HAVE_STRPTIME
 571         strptime(str, "%Y%m%d%H%M%S", &ts);
 572 #else
 573         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 574                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 575         ts.tm_year -= 1900;
 576         ts.tm_mon -= 1;
 577         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 578             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 579             ts.tm_min > 59 || ts.tm_sec > 61)
 580                 ts.tm_mday = 0;
 581 #endif
 582         if (ts.tm_mday == 0) {
 583                 com_err(program_name, 0,
 584                         _("Couldn't parse date/time specifier: %s"),
 585                         str);
 586                 usage();
 587         }
 588         ts.tm_isdst = -1;
 589         return (mktime(&ts));
 590 }
 591
 592 static void parse_tune2fs_options(int argc, char **argv)
 593 {
 594         int c;
 595         char * tmp;
 596         struct group * gr;
 597         struct passwd * pw;
 598
 599         open_flag = 0;
 600
 601         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 602         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
 603                 switch (c)
 604                 {
 605                         case 'c':
 606                                 max_mount_count = strtol (optarg, &tmp, 0);
 607                                 if (*tmp || max_mount_count > 16000) {
 608                                         com_err (program_name, 0,
 609                                                  _("bad mounts count - %s"),
 610                                                  optarg);
 611                                         usage();
 612                                 }
 613                                 if (max_mount_count == 0)
 614                                         max_mount_count = -1;
 615                                 c_flag = 1;
 616                                 open_flag = EXT2_FLAG_RW;
 617                                 break;
 618                         case 'C':
 619                                 mount_count = strtoul (optarg, &tmp, 0);
 620                                 if (*tmp || mount_count > 16000) {
 621                                         com_err (program_name, 0,
 622                                                  _("bad mounts count - %s"),
 623                                                  optarg);
 624                                         usage();
 625                                 }
 626                                 C_flag = 1;
 627                                 open_flag = EXT2_FLAG_RW;
 628                                 break;
 629                         case 'e':
 630                                 if (strcmp (optarg, "continue") == 0)
 631                                         errors = EXT2_ERRORS_CONTINUE;
 632                                 else if (strcmp (optarg, "remount-ro") == 0)
 633                                         errors = EXT2_ERRORS_RO;
 634                                 else if (strcmp (optarg, "panic") == 0)
 635                                         errors = EXT2_ERRORS_PANIC;
 636                                 else {
 637                                         com_err (program_name, 0,
 638                                                  _("bad error behavior - %s"),
 639                                                  optarg);
 640                                         usage();
 641                                 }
 642                                 e_flag = 1;
 643                                 open_flag = EXT2_FLAG_RW;
 644                                 break;
 645                         case 'E':
 646                                 extended_cmd = optarg;
 647                                 open_flag |= EXT2_FLAG_RW;
 648                                 break;
 649                         case 'f': /* Force */
 650                                 f_flag = 1;
 651                                 break;
 652                         case 'g':
 653                                 resgid = strtoul (optarg, &tmp, 0);
 654                                 if (*tmp) {
 655                                         gr = getgrnam (optarg);
 656                                         if (gr == NULL)
 657                                                 tmp = optarg;
 658                                         else {
 659                                                 resgid = gr->gr_gid;
 660                                                 *tmp =0;
 661                                         }
 662                                 }
 663                                 if (*tmp) {
 664                                         com_err (program_name, 0,
 665                                                  _("bad gid/group name - %s"),
 666                                                  optarg);
 667                                         usage();
 668                                 }
 669                                 g_flag = 1;
 670                                 open_flag = EXT2_FLAG_RW;
 671                                 break;
 672                         case 'i':
 673                                 interval = strtoul (optarg, &tmp, 0);
 674                                 switch (*tmp) {
 675                                 case 's':
 676                                         tmp++;
 677                                         break;
 678                                 case '\0':
 679                                 case 'd':
 680                                 case 'D': /* days */
 681                                         interval *= 86400;
 682                                         if (*tmp != '\0')
 683                                                 tmp++;
 684                                         break;
 685                                 case 'm':
 686                                 case 'M': /* months! */
 687                                         interval *= 86400 * 30;
 688                                         tmp++;
 689                                         break;
 690                                 case 'w':
 691                                 case 'W': /* weeks */
 692                                         interval *= 86400 * 7;
 693                                         tmp++;
 694                                         break;
 695                                 }
 696                                 if (*tmp) {
 697                                         com_err (program_name, 0,
 698                                                 _("bad interval - %s"), optarg);
 699                                         usage();
 700                                 }
 701                                 i_flag = 1;
 702                                 open_flag = EXT2_FLAG_RW;
 703                                 break;
 704                         case 'j':
 705                                 if (!journal_size)
 706                                         journal_size = -1;
 707                                 open_flag = EXT2_FLAG_RW;
 708                                 break;
 709                         case 'J':
 710                                 parse_journal_opts(optarg);
 711                                 open_flag = EXT2_FLAG_RW;
 712                                 break;
 713                         case 'l':
 714                                 l_flag = 1;
 715                                 break;
 716                         case 'L':
 717                                 new_label = optarg;
 718                                 L_flag = 1;
 719                                 open_flag |= EXT2_FLAG_RW |
 720                                         EXT2_FLAG_JOURNAL_DEV_OK;
 721                                 break;
 722                         case 'm':
 723                                 reserved_ratio = strtod(optarg, &tmp);
 724                                 if (*tmp || reserved_ratio > 50) {
 725                                         com_err (program_name, 0,
 726                                                  _("bad reserved block ratio - %s"),
 727                                                  optarg);
 728                                         usage();
 729                                 }
 730                                 m_flag = 1;
 731                                 open_flag = EXT2_FLAG_RW;
 732                                 break;
 733                         case 'M':
 734                                 new_last_mounted = optarg;
 735                                 M_flag = 1;
 736                                 open_flag = EXT2_FLAG_RW;
 737                                 break;
 738                         case 'o':
 739                                 if (mntopts_cmd) {
 740                                         com_err (program_name, 0,
 741                                          _("-o may only be specified once"));
 742                                         usage();
 743                                 }
 744                                 mntopts_cmd = optarg;
 745                                 open_flag = EXT2_FLAG_RW;
 746                                 break;
 747
 748                         case 'O':
 749                                 if (features_cmd) {
 750                                         com_err (program_name, 0,
 751                                          _("-O may only be specified once"));
 752                                         usage();
 753                                 }
 754                                 features_cmd = optarg;
 755                                 open_flag = EXT2_FLAG_RW;
 756                                 break;
 757                         case 'r':
 758                                 reserved_blocks = strtoul (optarg, &tmp, 0);
 759                                 if (*tmp) {
 760                                         com_err (program_name, 0,
 761                                                  _("bad reserved blocks count - %s"),
 762                                                  optarg);
 763                                         usage();
 764                                 }
 765                                 r_flag = 1;
 766                                 open_flag = EXT2_FLAG_RW;
 767                                 break;
 768                         case 's': /* Deprecated */
 769                                 s_flag = atoi(optarg);
 770                                 open_flag = EXT2_FLAG_RW;
 771                                 break;
 772                         case 'T':
 773                                 T_flag = 1;
 774                                 last_check_time = parse_time(optarg);
 775                                 open_flag = EXT2_FLAG_RW;
 776                                 break;
 777                         case 'u':
 778                                 resuid = strtoul (optarg, &tmp, 0);
 779                                 if (*tmp) {
 780                                         pw = getpwnam (optarg);
 781                                         if (pw == NULL)
 782                                                 tmp = optarg;
 783                                         else {
 784                                                 resuid = pw->pw_uid;
 785                                                 *tmp = 0;
 786                                         }
 787                                 }
 788                                 if (*tmp) {
 789                                         com_err (program_name, 0,
 790                                                  _("bad uid/user name - %s"),
 791                                                  optarg);
 792                                         usage();
 793                                 }
 794                                 u_flag = 1;
 795                                 open_flag = EXT2_FLAG_RW;
 796                                 break;
 797                         case 'U':
 798                                 new_UUID = optarg;
 799                                 U_flag = 1;
 800                                 open_flag = EXT2_FLAG_RW |
 801                                         EXT2_FLAG_JOURNAL_DEV_OK;
 802                                 break;
 803                         case 'I':
 804                                 new_inode_size = strtoul (optarg, &tmp, 0);
 805                                 if (*tmp) {
 806                                         com_err (program_name, 0,
 807                                                 _("bad inode size - %s"),
 808                                                         optarg);
 809                                         usage();
 810                                 }
 811                                 if (!((new_inode_size &
 812                                                 (new_inode_size - 1)) == 0)) {
 813                                         com_err (program_name, 0,
 814                                                 _("Inode size must be a "
 815                                                 "power of two- %s"),
 816                                                         optarg);
 817                                         usage();
 818                                 }
 819                                 open_flag = EXT2_FLAG_RW;
 820                                 I_flag = 1;
 821                                 break;
 822                         default:
 823                                 usage();
 824                 }
 825         if (optind < argc - 1 || optind == argc)
 826                 usage();
 827         if (!open_flag && !l_flag)
 828                 usage();
 829         io_options = strchr(argv[optind], '?');
 830         if (io_options)
 831                 *io_options++ = 0;
 832         device_name = blkid_get_devname(NULL, argv[optind], NULL);
 833         if (!device_name) {
 834                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
 835                         argv[optind]);
 836                 exit(1);
 837         }
 838 }
 839
 840 void do_findfs(int argc, char **argv)
 841 {
 842         char    *dev;
 843
 844         if ((argc != 2) ||
 845             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
 846                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
 847                 exit(2);
 848         }
 849         dev = blkid_get_devname(NULL, argv[1], NULL);
 850         if (!dev) {
 851                 com_err("findfs", 0, _("Unable to resolve '%s'"),
 852                         argv[1]);
 853                 exit(1);
 854         }
 855         puts(dev);
 856         exit(0);
 857 }
 858
 859 static void parse_extended_opts(ext2_filsys fs, const char *opts)
 860 {
 861         char    *buf, *token, *next, *p, *arg;
 862         int     len, hash_alg;
 863         int     r_usage = 0;
 864
 865         len = strlen(opts);
 866         buf = malloc(len+1);
 867         if (!buf) {
 868                 fprintf(stderr,
 869                         _("Couldn't allocate memory to parse options!\n"));
 870                 exit(1);
 871         }
 872         strcpy(buf, opts);
 873         for (token = buf; token && *token; token = next) {
 874                 p = strchr(token, ',');
 875                 next = 0;
 876                 if (p) {
 877                         *p = 0;
 878                         next = p+1;
 879                 }
 880                 arg = strchr(token, '=');
 881                 if (arg) {
 882                         *arg = 0;
 883                         arg++;
 884                 }
 885                 if (!strcmp(token, "test_fs")) {
 886                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 887                         printf("Setting test filesystem flag\n");
 888                         ext2fs_mark_super_dirty(fs);
 889                 } else if (!strcmp(token, "^test_fs")) {
 890                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
 891                         printf("Clearing test filesystem flag\n");
 892                         ext2fs_mark_super_dirty(fs);
 893                 } else if (strcmp(token, "stride") == 0) {
 894                         if (!arg) {
 895                                 r_usage++;
 896                                 continue;
 897                         }
 898                         stride = strtoul(arg, &p, 0);
 899                         if (*p || (stride == 0)) {
 900                                 fprintf(stderr,
 901                                        _("Invalid RAID stride: %s\n"),
 902                                         arg);
 903                                 r_usage++;
 904                                 continue;
 905                         }
 906                         stride_set = 1;
 907                 } else if (strcmp(token, "stripe-width") == 0 ||
 908                            strcmp(token, "stripe_width") == 0) {
 909                         if (!arg) {
 910                                 r_usage++;
 911                                 continue;
 912                         }
 913                         stripe_width = strtoul(arg, &p, 0);
 914                         if (*p || (stripe_width == 0)) {
 915                                 fprintf(stderr,
 916                                         _("Invalid RAID stripe-width: %s\n"),
 917                                         arg);
 918                                 r_usage++;
 919                                 continue;
 920                         }
 921                         stripe_width_set = 1;
 922                 } else if (strcmp(token, "hash_alg") == 0 ||
 923                            strcmp(token, "hash-alg") == 0) {
 924                         if (!arg) {
 925                                 r_usage++;
 926                                 continue;
 927                         }
 928                         hash_alg = e2p_string2hash(arg);
 929                         if (hash_alg < 0) {
 930                                 fprintf(stderr,
 931                                         _("Invalid hash algorithm: %s\n"),
 932                                         arg);
 933                                 r_usage++;
 934                                 continue;
 935                         }
 936                         fs->super->s_def_hash_version = hash_alg;
 937                         printf(_("Setting default hash algorithm "
 938                                  "to %s (%d)\n"),
 939                                arg, hash_alg);
 940                         ext2fs_mark_super_dirty(fs);
 941                 } else
 942                         r_usage++;
 943         }
 944         if (r_usage) {
 945                 fprintf(stderr, _("\nBad options specified.\n\n"
 946                         "Extended options are separated by commas, "
 947                         "and may take an argument which\n"
 948                         "\tis set off by an equals ('=') sign.\n\n"
 949                         "Valid extended options are:\n"
 950                         "\tstride=<RAID per-disk chunk size in blocks>\n"
 951                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
 952                         "\thash_alg=<hash algorithm>\n"
 953                         "\ttest_fs\n"
 954                         "\t^test_fs\n"));
 955                 free(buf);
 956                 exit(1);
 957         }
 958         free(buf);
 959 }
 960
 961 static int get_move_bitmap(ext2_filsys fs, int new_ino_blks_per_grp,
 962                                         ext2fs_block_bitmap bmap)
 963 {
 964         dgrp_t i;
 965         blk_t j, needed_blocks = 0;
 966         blk_t start_blk, end_blk;
 967
 968         for (i = 0; i < fs->group_desc_count; i++) {
 969
 970                 start_blk = fs->group_desc[i].bg_inode_table +
 971                                         fs->inode_blocks_per_group;
 972
 973                 end_blk = fs->group_desc[i].bg_inode_table +
 974                                         new_ino_blks_per_grp;
 975
 976                 for (j = start_blk; j < end_blk; j++) {
 977
 978                         if (ext2fs_test_block_bitmap(fs->block_map, j)) {
 979                                 /* FIXME!!
 980                                  * What happens if the block is marked
 981                                  * as a bad block
 982                                  */
 983                                 ext2fs_mark_block_bitmap(bmap, j);
 984                                 needed_blocks++;
 985                         } else {
 986                                 /*
 987                                  * We are going to use this block for
 988                                  * inode table. So mark them used.
 989                                  */
 990                                 ext2fs_mark_block_bitmap(fs->block_map, j);
 991                         }
 992                 }
 993         }
 994
 995         if (needed_blocks > fs->super->s_free_blocks_count ) {
 996                 return ENOSPC;
 997         }
 998
 999         return 0;
1000 }
1001
1002 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1003 {
1004         char *buf;
1005         errcode_t retval;
1006         blk_t blk, new_blk;
1007         struct blk_move *bmv;
1008
1009
1010         retval = ext2fs_get_mem(fs->blocksize, &buf);
1011         if (retval)
1012                 return retval;
1013
1014         for (new_blk = blk = fs->super->s_first_data_block;
1015              blk < fs->super->s_blocks_count; blk++) {
1016
1017                 if (!ext2fs_test_block_bitmap(bmap, blk))
1018                         continue;
1019
1020                 retval = ext2fs_new_block(fs, new_blk, NULL, &new_blk);
1021                 if (retval)
1022                         goto err_out;
1023
1024                 /* Mark this block as allocated */
1025                 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
1026
1027                 /* Add it to block move list */
1028                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1029                 if (retval)
1030                         goto err_out;
1031
1032                 bmv->old_loc = blk;
1033                 bmv->new_loc = new_blk;
1034
1035                 list_add(&(bmv->list), &blk_move_list);
1036
1037                 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1038                 if (retval)
1039                         goto err_out;
1040
1041                 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1042                 if (retval)
1043                         goto err_out;
1044         }
1045
1046 err_out:
1047         ext2fs_free_mem(&buf);
1048         return retval;
1049 }
1050
1051 static blk_t transalate_block(blk_t blk)
1052 {
1053         struct list_head *entry;
1054         struct blk_move *bmv;
1055
1056         list_for_each(entry, &blk_move_list) {
1057
1058                 bmv = list_entry(entry, struct blk_move, list);
1059                 if (bmv->old_loc == blk)
1060                         return bmv->new_loc;
1061         }
1062
1063         return 0;
1064 }
1065
1066 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1067                          blk_t *block_nr,
1068                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1069                          blk_t ref_block EXT2FS_ATTR((unused)),
1070                          int ref_offset EXT2FS_ATTR((unused)),
1071                          void *priv_data)
1072 {
1073         int ret = 0;
1074         blk_t new_blk;
1075         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1076
1077         if (!ext2fs_test_block_bitmap(bmap, *block_nr))
1078                 return 0;
1079         new_blk = transalate_block(*block_nr);
1080         if (new_blk) {
1081                 *block_nr = new_blk;
1082                 /*
1083                  * This will force the ext2fs_write_inode in the iterator
1084                  */
1085                 ret |= BLOCK_CHANGED;
1086         }
1087
1088         return ret;
1089 }
1090
1091 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1092 {
1093         errcode_t retval = 0;
1094         ext2_ino_t ino;
1095         blk_t blk;
1096         char *block_buf = 0;
1097         struct ext2_inode inode;
1098         ext2_inode_scan scan = NULL;
1099
1100         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1101         if (retval)
1102                 return retval;
1103
1104         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1105         if (retval)
1106                 goto err_out;
1107
1108         while (1) {
1109
1110                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1111                 if (retval)
1112                         goto err_out;
1113
1114                 if (!ino)
1115                         break;
1116
1117                 if (inode.i_links_count == 0)
1118                         continue; /* inode not in use */
1119
1120                 /* FIXME!!
1121                  * If we end up modifying the journal inode
1122                  * the sb->s_jnl_blocks will differ. But a
1123                  * subsequent e2fsck fixes that.
1124                  * Do we need to fix this ??
1125                  */
1126
1127                 if (inode.i_file_acl &&
1128                     ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) {
1129                         blk = transalate_block(inode.i_file_acl);
1130                         if (!blk)
1131                                 continue;
1132
1133                         inode.i_file_acl = blk;
1134
1135                         /*
1136                          * Write the inode to disk so that inode table
1137                          * resizing can work
1138                          */
1139                         retval = ext2fs_write_inode(fs, ino, &inode);
1140                         if (retval)
1141                                 goto err_out;
1142                 }
1143
1144                 if (!ext2fs_inode_has_valid_blocks(&inode))
1145                         continue;
1146
1147                 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
1148                                                process_block, bmap);
1149                 if (retval)
1150                         goto err_out;
1151
1152         }
1153
1154 err_out:
1155         ext2fs_free_mem(&block_buf);
1156
1157         return retval;
1158
1159 }
1160
1161 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1162 {
1163         dgrp_t i;
1164         blk_t blk;
1165         errcode_t retval;
1166         int new_ino_blks_per_grp;
1167         unsigned int j;
1168         char *old_itable = NULL, *new_itable = NULL;
1169         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1170         unsigned long old_ino_size;
1171         int old_itable_size, new_itable_size;
1172
1173         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1174         old_ino_size = EXT2_INODE_SIZE(fs->super);
1175
1176         new_ino_blks_per_grp = ext2fs_div_ceil(
1177                                         EXT2_INODES_PER_GROUP(fs->super) *
1178                                         new_ino_size,
1179                                         fs->blocksize);
1180
1181         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1182
1183         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1184         if (retval)
1185                 return retval;
1186
1187         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1188         if (retval)
1189                 goto err_out;
1190
1191         tmp_old_itable = old_itable;
1192         tmp_new_itable = new_itable;
1193
1194         for (i = 0; i < fs->group_desc_count; i++) {
1195
1196                 blk = fs->group_desc[i].bg_inode_table;
1197                 retval = io_channel_read_blk(fs->io, blk,
1198                                 fs->inode_blocks_per_group, old_itable);
1199                 if (retval)
1200                         goto err_out;
1201
1202                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1203
1204                         memcpy(new_itable, old_itable, old_ino_size);
1205
1206                         memset(new_itable+old_ino_size, 0,
1207                                         new_ino_size - old_ino_size);
1208
1209                         new_itable += new_ino_size;
1210                         old_itable += old_ino_size;
1211                 }
1212
1213                 /* reset the pointer */
1214                 old_itable = tmp_old_itable;
1215                 new_itable = tmp_new_itable;
1216
1217                 retval = io_channel_write_blk(fs->io, blk,
1218                                         new_ino_blks_per_grp, new_itable);
1219                 if (retval)
1220                         goto err_out;
1221         }
1222
1223         /* Update the meta data */
1224         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1225         fs->super->s_inode_size = new_ino_size;
1226
1227 err_out:
1228         if (old_itable)
1229                 ext2fs_free_mem(&old_itable);
1230
1231         if (new_itable)
1232                 ext2fs_free_mem(&new_itable);
1233
1234         return retval;
1235 }
1236
1237 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1238 {
1239         blk_t           blk;
1240         ext2_ino_t      ino;
1241         unsigned int    group = 0;
1242         unsigned int    count = 0;
1243         int             total_free = 0;
1244         int             group_free = 0;
1245
1246         /*
1247          * First calculate the block statistics
1248          */
1249         for (blk = fs->super->s_first_data_block;
1250              blk < fs->super->s_blocks_count; blk++) {
1251                 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1252                         group_free++;
1253                         total_free++;
1254                 }
1255                 count++;
1256                 if ((count == fs->super->s_blocks_per_group) ||
1257                     (blk == fs->super->s_blocks_count-1)) {
1258                         fs->group_desc[group++].bg_free_blocks_count =
1259                                 group_free;
1260                         count = 0;
1261                         group_free = 0;
1262                 }
1263         }
1264         fs->super->s_free_blocks_count = total_free;
1265
1266         /*
1267          * Next, calculate the inode statistics
1268          */
1269         group_free = 0;
1270         total_free = 0;
1271         count = 0;
1272         group = 0;
1273
1274         /* Protect loop from wrap-around if s_inodes_count maxed */
1275         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1276                 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1277                         group_free++;
1278                         total_free++;
1279                 }
1280                 count++;
1281                 if ((count == fs->super->s_inodes_per_group) ||
1282                     (ino == fs->super->s_inodes_count)) {
1283                         fs->group_desc[group++].bg_free_inodes_count =
1284                                 group_free;
1285                         count = 0;
1286                         group_free = 0;
1287                 }
1288         }
1289         fs->super->s_free_inodes_count = total_free;
1290         ext2fs_mark_super_dirty(fs);
1291         return 0;
1292 }
1293
1294 #define list_for_each_safe(pos, pnext, head) \
1295         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1296              pos = pnext, pnext = pos->next)
1297
1298 static void free_blk_move_list(void)
1299 {
1300         struct list_head *entry, *tmp;
1301         struct blk_move *bmv;
1302
1303         list_for_each_safe(entry, tmp, &blk_move_list) {
1304
1305                 bmv = list_entry(entry, struct blk_move, list);
1306                 list_del(entry);
1307                 ext2fs_free_mem(&bmv);
1308         }
1309
1310         return ;
1311 }
1312
1313 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1314 {
1315         errcode_t retval;
1316         int new_ino_blks_per_grp;
1317         ext2fs_block_bitmap bmap;
1318
1319         ext2fs_read_inode_bitmap(fs);
1320         ext2fs_read_block_bitmap(fs);
1321         INIT_LIST_HEAD(&blk_move_list);
1322
1323
1324         new_ino_blks_per_grp = ext2fs_div_ceil(
1325                                         EXT2_INODES_PER_GROUP(fs->super)*
1326                                         new_size,
1327                                         fs->blocksize);
1328
1329         /* We may change the file system.
1330          * Mark the file system as invalid so that
1331          * the user is prompted to run fsck.
1332          */
1333         fs->super->s_state &= ~EXT2_VALID_FS;
1334
1335         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1336                                                 &bmap);
1337         if (retval)
1338                 return retval;
1339
1340         retval = get_move_bitmap(fs, new_ino_blks_per_grp, bmap);
1341         if (retval)
1342                 goto err_out;
1343
1344         retval = move_block(fs, bmap);
1345         if (retval)
1346                 goto err_out;
1347
1348         retval = inode_scan_and_fix(fs, bmap);
1349         if (retval)
1350                 goto err_out;
1351
1352         retval = expand_inode_table(fs, new_size);
1353         if (retval)
1354                 goto err_out;
1355
1356         ext2fs_calculate_summary_stats(fs);
1357
1358         fs->super->s_state |= EXT2_VALID_FS;
1359         /* mark super block and block bitmap as dirty */
1360         ext2fs_mark_super_dirty(fs);
1361         ext2fs_mark_bb_dirty(fs);
1362
1363 err_out:
1364         free_blk_move_list();
1365         ext2fs_free_block_bitmap(bmap);
1366
1367         return retval;
1368 }
1369
1370 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1371 {
1372         errcode_t retval = 0;
1373         const char *tdb_dir;
1374         char tdb_file[PATH_MAX];
1375         char *dev_name, *tmp_name;
1376
1377 #if 0 /* FIXME!! */
1378         /*
1379          * Configuration via a conf file would be
1380          * nice
1381          */
1382         profile_get_string(profile, "scratch_files",
1383                                         "directory", 0, 0,
1384                                         &tdb_dir);
1385 #endif
1386         tmp_name = strdup(name);
1387         dev_name = basename(tmp_name);
1388
1389         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1390         if (!tdb_dir)
1391                 tdb_dir="/var/lib/e2fsprogs";
1392
1393         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1394             access(tdb_dir, W_OK))
1395                 return 0;
1396
1397         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1398
1399         if (!access(tdb_file, F_OK)) {
1400                 if (unlink(tdb_file) < 0) {
1401                         retval = errno;
1402                         com_err(program_name, retval,
1403                                 _("while trying to delete %s"),
1404                                 tdb_file);
1405                         return retval;
1406                 }
1407         }
1408
1409         set_undo_io_backing_manager(*io_ptr);
1410         *io_ptr = undo_io_manager;
1411         set_undo_io_backup_file(tdb_file);
1412         printf(_("To undo the tune2fs operations please run "
1413                  "the command\n    e2undo %s %s\n\n"),
1414                  tdb_file, name);
1415         free(tmp_name);
1416         return retval;
1417 }
1418
1419 int main (int argc, char ** argv)
1420 {
1421         errcode_t retval;
1422         ext2_filsys fs;
1423         struct ext2_super_block *sb;
1424         io_manager io_ptr, io_ptr_orig = NULL;
1425
1426 #ifdef ENABLE_NLS
1427         setlocale(LC_MESSAGES, "");
1428         setlocale(LC_CTYPE, "");
1429         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1430         textdomain(NLS_CAT_NAME);
1431 #endif
1432         if (argc && *argv)
1433                 program_name = *argv;
1434         add_error_table(&et_ext2_error_table);
1435
1436         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1437                 do_findfs(argc, argv);
1438         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1439                 parse_e2label_options(argc, argv);
1440         else
1441                 parse_tune2fs_options(argc, argv);
1442
1443 #ifdef CONFIG_TESTIO_DEBUG
1444         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1445                 io_ptr = test_io_manager;
1446                 test_io_backing_manager = unix_io_manager;
1447         } else
1448 #endif
1449                 io_ptr = unix_io_manager;
1450
1451 retry_open:
1452         retval = ext2fs_open2(device_name, io_options, open_flag,
1453                               0, 0, io_ptr, &fs);
1454         if (retval) {
1455                 com_err (program_name, retval, _("while trying to open %s"),
1456                          device_name);
1457                 fprintf(stderr,
1458                         _("Couldn't find valid filesystem superblock.\n"));
1459                 exit(1);
1460         }
1461
1462         if (I_flag && !io_ptr_orig) {
1463                 /*
1464                  * Check the inode size is right so we can issue an
1465                  * error message and bail before setting up the tdb
1466                  * file.
1467                  */
1468                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1469                         fprintf(stderr, _("The inode size is already %d\n"),
1470                                 new_inode_size);
1471                         exit(1);
1472                 }
1473                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1474                         fprintf(stderr, _("Shrinking the inode size is "
1475                                           "not supported\n"));
1476                         exit(1);
1477                 }
1478
1479                 /*
1480                  * If inode resize is requested use the
1481                  * Undo I/O manager
1482                  */
1483                 io_ptr_orig = io_ptr;
1484                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1485                 if (retval)
1486                         exit(1);
1487                 if (io_ptr != io_ptr_orig) {
1488                         ext2fs_close(fs);
1489                         goto retry_open;
1490                 }
1491         }
1492
1493         sb = fs->super;
1494         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1495
1496         if (print_label) {
1497                 /* For e2label emulation */
1498                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1499                        sb->s_volume_name);
1500                 remove_error_table(&et_ext2_error_table);
1501                 exit(0);
1502         }
1503
1504         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1505         if (retval) {
1506                 com_err("ext2fs_check_if_mount", retval,
1507                         _("while determining whether %s is mounted."),
1508                         device_name);
1509                 exit(1);
1510         }
1511         /* Normally we only need to write out the superblock */
1512         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1513
1514         if (c_flag) {
1515                 sb->s_max_mnt_count = max_mount_count;
1516                 ext2fs_mark_super_dirty(fs);
1517                 printf (_("Setting maximal mount count to %d\n"),
1518                         max_mount_count);
1519         }
1520         if (C_flag) {
1521                 sb->s_mnt_count = mount_count;
1522                 ext2fs_mark_super_dirty(fs);
1523                 printf (_("Setting current mount count to %d\n"), mount_count);
1524         }
1525         if (e_flag) {
1526                 sb->s_errors = errors;
1527                 ext2fs_mark_super_dirty(fs);
1528                 printf (_("Setting error behavior to %d\n"), errors);
1529         }
1530         if (g_flag) {
1531                 sb->s_def_resgid = resgid;
1532                 ext2fs_mark_super_dirty(fs);
1533                 printf (_("Setting reserved blocks gid to %lu\n"), resgid);
1534         }
1535         if (i_flag) {
1536                 sb->s_checkinterval = interval;
1537                 ext2fs_mark_super_dirty(fs);
1538                 printf (_("Setting interval between checks to %lu seconds\n"), interval);
1539         }
1540         if (m_flag) {
1541                 sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
1542                                         sb->s_blocks_count / 100.0);
1543                 ext2fs_mark_super_dirty(fs);
1544                 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
1545                         reserved_ratio, sb->s_r_blocks_count);
1546         }
1547         if (r_flag) {
1548                 if (reserved_blocks >= sb->s_blocks_count/2) {
1549                         com_err (program_name, 0,
1550                                  _("reserved blocks count is too big (%lu)"),
1551                                  reserved_blocks);
1552                         exit (1);
1553                 }
1554                 sb->s_r_blocks_count = reserved_blocks;
1555                 ext2fs_mark_super_dirty(fs);
1556                 printf (_("Setting reserved blocks count to %lu\n"),
1557                         reserved_blocks);
1558         }
1559         if (s_flag == 1) {
1560                 if (sb->s_feature_ro_compat &
1561                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1562                         fputs(_("\nThe filesystem already has sparse "
1563                                 "superblocks.\n"), stderr);
1564                 else {
1565                         sb->s_feature_ro_compat |=
1566                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1567                         sb->s_state &= ~EXT2_VALID_FS;
1568                         ext2fs_mark_super_dirty(fs);
1569                         printf(_("\nSparse superblock flag set.  %s"),
1570                                _(please_fsck));
1571                 }
1572         }
1573         if (s_flag == 0) {
1574                 fputs(_("\nClearing the sparse superflag not supported.\n"),
1575                       stderr);
1576                 exit(1);
1577         }
1578         if (T_flag) {
1579                 sb->s_lastcheck = last_check_time;
1580                 ext2fs_mark_super_dirty(fs);
1581                 printf(_("Setting time filesystem last checked to %s\n"),
1582                        ctime(&last_check_time));
1583         }
1584         if (u_flag) {
1585                 sb->s_def_resuid = resuid;
1586                 ext2fs_mark_super_dirty(fs);
1587                 printf (_("Setting reserved blocks uid to %lu\n"), resuid);
1588         }
1589         if (L_flag) {
1590                 if (strlen(new_label) > sizeof(sb->s_volume_name))
1591                         fputs(_("Warning: label too long, truncating.\n"),
1592                               stderr);
1593                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1594                 strncpy(sb->s_volume_name, new_label,
1595                         sizeof(sb->s_volume_name));
1596                 ext2fs_mark_super_dirty(fs);
1597         }
1598         if (M_flag) {
1599                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1600                 strncpy(sb->s_last_mounted, new_last_mounted,
1601                         sizeof(sb->s_last_mounted));
1602                 ext2fs_mark_super_dirty(fs);
1603         }
1604         if (mntopts_cmd)
1605                 update_mntopts(fs, mntopts_cmd);
1606         if (features_cmd)
1607                 update_feature_set(fs, features_cmd);
1608         if (extended_cmd)
1609                 parse_extended_opts(fs, extended_cmd);
1610         if (journal_size || journal_device)
1611                 add_journal(fs);
1612
1613         if (U_flag) {
1614                 int set_csum = 0;
1615                 dgrp_t i;
1616
1617                 if (sb->s_feature_ro_compat &
1618                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1619                         /*
1620                          * Determine if the block group checksums are
1621                          * correct so we know whether or not to set
1622                          * them later on.
1623                          */
1624                         for (i = 0; i < fs->group_desc_count; i++)
1625                                 if (!ext2fs_group_desc_csum_verify(fs, i))
1626                                         break;
1627                         if (i >= fs->group_desc_count)
1628                                 set_csum = 1;
1629                 }
1630                 if ((strcasecmp(new_UUID, "null") == 0) ||
1631                     (strcasecmp(new_UUID, "clear") == 0)) {
1632                         uuid_clear(sb->s_uuid);
1633                 } else if (strcasecmp(new_UUID, "time") == 0) {
1634                         uuid_generate_time(sb->s_uuid);
1635                 } else if (strcasecmp(new_UUID, "random") == 0) {
1636                         uuid_generate(sb->s_uuid);
1637                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1638                         com_err(program_name, 0, _("Invalid UUID format\n"));
1639                         exit(1);
1640                 }
1641                 if (set_csum) {
1642                         for (i = 0; i < fs->group_desc_count; i++)
1643                                 ext2fs_group_desc_csum_set(fs, i);
1644                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1645                 }
1646                 ext2fs_mark_super_dirty(fs);
1647         }
1648         if (I_flag) {
1649                 if (mount_flags & EXT2_MF_MOUNTED) {
1650                         fputs(_("The inode size may only be "
1651                                 "changed when the filesystem is "
1652                                 "unmounted.\n"), stderr);
1653                         exit(1);
1654                 }
1655                 /*
1656                  * We want to update group descriptor also
1657                  * with the new free inode count
1658                  */
1659                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1660                 if (resize_inode(fs, new_inode_size)) {
1661                         fputs(_("Error in resizing the inode size.\n"
1662                                 "Run e2undo to undo the "
1663                                 "file system changes. \n"), stderr);
1664                 } else {
1665                         printf (_("Setting inode size %lu\n"),
1666                                                         new_inode_size);
1667                 }
1668         }
1669
1670         if (l_flag)
1671                 list_super (sb);
1672         if (stride_set) {
1673                 sb->s_raid_stride = stride;
1674                 ext2fs_mark_super_dirty(fs);
1675                 printf(_("Setting stride size to %d\n"), stride);
1676         }
1677         if (stripe_width_set) {
1678                 sb->s_raid_stripe_width = stripe_width;
1679                 ext2fs_mark_super_dirty(fs);
1680                 printf(_("Setting stripe width to %d\n"), stripe_width);
1681         }
1682         remove_error_table(&et_ext2_error_table);
1683         return (ext2fs_close (fs) ? 1 : 0);
1684 }