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 #ifdef CONFIG_BUILD_FINDFS
  99 void do_findfs(int argc, char **argv);
 100 #endif
 101
 102 static void usage(void)
 103 {
 104         fprintf(stderr,
 105                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 106                   "[-g group]\n"
 107                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 108                   "\t[-m reserved_blocks_percent] "
 109                   "[-o [^]mount_options[,...]] \n"
 110                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 111                   "[-L volume_label]\n"
 112                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 113                   "\t[-E extended-option[,...]] [-T last_check_time] "
 114                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 115         exit(1);
 116 }
 117
 118 static __u32 ok_features[3] = {
 119         /* Compat */
 120         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 121                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 122         /* Incompat */
 123         EXT2_FEATURE_INCOMPAT_FILETYPE |
 124                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 125                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 126         /* R/O compat */
 127         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 128                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 129                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 130                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 131                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 132                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 133 };
 134
 135 static __u32 clear_ok_features[3] = {
 136         /* Compat */
 137         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 138                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 139                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 140         /* Incompat */
 141         EXT2_FEATURE_INCOMPAT_FILETYPE |
 142                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 143         /* R/O compat */
 144         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 145                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 146                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 147                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 148                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 149 };
 150
 151 /*
 152  * Remove an external journal from the filesystem
 153  */
 154 static void remove_journal_device(ext2_filsys fs)
 155 {
 156         char            *journal_path;
 157         ext2_filsys     jfs;
 158         char            buf[1024];
 159         journal_superblock_t    *jsb;
 160         int             i, nr_users;
 161         errcode_t       retval;
 162         int             commit_remove_journal = 0;
 163         io_manager      io_ptr;
 164
 165         if (f_flag)
 166                 commit_remove_journal = 1; /* force removal even if error */
 167
 168         uuid_unparse(fs->super->s_journal_uuid, buf);
 169         journal_path = blkid_get_devname(NULL, "UUID", buf);
 170
 171         if (!journal_path) {
 172                 journal_path =
 173                         ext2fs_find_block_device(fs->super->s_journal_dev);
 174                 if (!journal_path)
 175                         return;
 176         }
 177
 178 #ifdef CONFIG_TESTIO_DEBUG
 179         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 180                 io_ptr = test_io_manager;
 181                 test_io_backing_manager = unix_io_manager;
 182         } else
 183 #endif
 184                 io_ptr = unix_io_manager;
 185         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 186                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 187                              fs->blocksize, io_ptr, &jfs);
 188         if (retval) {
 189                 com_err(program_name, retval,
 190                         _("while trying to open external journal"));
 191                 goto no_valid_journal;
 192         }
 193         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 194                 fprintf(stderr, _("%s is not a journal device.\n"),
 195                         journal_path);
 196                 goto no_valid_journal;
 197         }
 198
 199         /* Get the journal superblock */
 200         if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
 201                 com_err(program_name, retval,
 202                         _("while reading journal superblock"));
 203                 goto no_valid_journal;
 204         }
 205
 206         jsb = (journal_superblock_t *) buf;
 207         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 208             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 209                 fputs(_("Journal superblock not found!\n"), stderr);
 210                 goto no_valid_journal;
 211         }
 212
 213         /* Find the filesystem UUID */
 214         nr_users = ntohl(jsb->s_nr_users);
 215         for (i = 0; i < nr_users; i++) {
 216                 if (memcmp(fs->super->s_uuid,
 217                            &jsb->s_users[i*16], 16) == 0)
 218                         break;
 219         }
 220         if (i >= nr_users) {
 221                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 222                       stderr);
 223                 commit_remove_journal = 1;
 224                 goto no_valid_journal;
 225         }
 226         nr_users--;
 227         for (i = 0; i < nr_users; i++)
 228                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 229         jsb->s_nr_users = htonl(nr_users);
 230
 231         /* Write back the journal superblock */
 232         if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
 233                 com_err(program_name, retval,
 234                         "while writing journal superblock.");
 235                 goto no_valid_journal;
 236         }
 237
 238         commit_remove_journal = 1;
 239
 240 no_valid_journal:
 241         if (commit_remove_journal == 0) {
 242                 fputs(_("Journal NOT removed\n"), stderr);
 243                 exit(1);
 244         }
 245         fs->super->s_journal_dev = 0;
 246         uuid_clear(fs->super->s_journal_uuid);
 247         ext2fs_mark_super_dirty(fs);
 248         fputs(_("Journal removed\n"), stdout);
 249         free(journal_path);
 250 }
 251
 252 /* Helper function for remove_journal_inode */
 253 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 254                                int blockcnt EXT2FS_ATTR((unused)),
 255                                void *private EXT2FS_ATTR((unused)))
 256 {
 257         blk_t   block;
 258         int     group;
 259
 260         block = *blocknr;
 261         ext2fs_unmark_block_bitmap(fs->block_map, block);
 262         group = ext2fs_group_of_blk(fs, block);
 263         fs->group_desc[group].bg_free_blocks_count++;
 264         ext2fs_group_desc_csum_set(fs, group);
 265         fs->super->s_free_blocks_count++;
 266         return 0;
 267 }
 268
 269 /*
 270  * Remove the journal inode from the filesystem
 271  */
 272 static void remove_journal_inode(ext2_filsys fs)
 273 {
 274         struct ext2_inode       inode;
 275         errcode_t               retval;
 276         ino_t                   ino = fs->super->s_journal_inum;
 277
 278         retval = ext2fs_read_inode(fs, ino,  &inode);
 279         if (retval) {
 280                 com_err(program_name, retval,
 281                         _("while reading journal inode"));
 282                 exit(1);
 283         }
 284         if (ino == EXT2_JOURNAL_INO) {
 285                 retval = ext2fs_read_bitmaps(fs);
 286                 if (retval) {
 287                         com_err(program_name, retval,
 288                                 _("while reading bitmaps"));
 289                         exit(1);
 290                 }
 291                 retval = ext2fs_block_iterate(fs, ino,
 292                                               BLOCK_FLAG_READ_ONLY, NULL,
 293                                               release_blocks_proc, NULL);
 294                 if (retval) {
 295                         com_err(program_name, retval,
 296                                 _("while clearing journal inode"));
 297                         exit(1);
 298                 }
 299                 memset(&inode, 0, sizeof(inode));
 300                 ext2fs_mark_bb_dirty(fs);
 301                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 302         } else
 303                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 304         retval = ext2fs_write_inode(fs, ino, &inode);
 305         if (retval) {
 306                 com_err(program_name, retval,
 307                         _("while writing journal inode"));
 308                 exit(1);
 309         }
 310         fs->super->s_journal_inum = 0;
 311         ext2fs_mark_super_dirty(fs);
 312 }
 313
 314 /*
 315  * Update the default mount options
 316  */
 317 static void update_mntopts(ext2_filsys fs, char *mntopts)
 318 {
 319         struct ext2_super_block *sb = fs->super;
 320
 321         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 322                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 323                         mntopts);
 324                 exit(1);
 325         }
 326         ext2fs_mark_super_dirty(fs);
 327 }
 328
 329 /*
 330  * Update the feature set as provided by the user.
 331  */
 332 static void update_feature_set(ext2_filsys fs, char *features)
 333 {
 334         struct ext2_super_block *sb = fs->super;
 335         __u32           old_features[3];
 336         int             type_err;
 337         unsigned int    mask_err;
 338
 339 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 340                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 341 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 342                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 343 #define FEATURE_CHANGED(type, mask) ((mask) & \
 344                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 345
 346         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 347         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 348         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 349
 350         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 351                               ok_features, clear_ok_features,
 352                               &type_err, &mask_err)) {
 353                 if (!mask_err)
 354                         fprintf(stderr,
 355                                 _("Invalid filesystem option set: %s\n"),
 356                                 features);
 357                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 358                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 359                                           "not supported.\n"),
 360                                 e2p_feature2string(type_err &
 361                                                    E2P_FEATURE_TYPE_MASK,
 362                                                    mask_err));
 363                 else
 364                         fprintf(stderr, _("Setting filesystem feature '%s' "
 365                                           "not supported.\n"),
 366                                 e2p_feature2string(type_err, mask_err));
 367                 exit(1);
 368         }
 369
 370         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 371                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 372                     !(mount_flags & EXT2_MF_READONLY)) {
 373                         fputs(_("The has_journal feature may only be "
 374                                 "cleared when the filesystem is\n"
 375                                 "unmounted or mounted "
 376                                 "read-only.\n"), stderr);
 377                         exit(1);
 378                 }
 379                 if (sb->s_feature_incompat &
 380                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 381                         fputs(_("The needs_recovery flag is set.  "
 382                                 "Please run e2fsck before clearing\n"
 383                                 "the has_journal flag.\n"), stderr);
 384                         exit(1);
 385                 }
 386                 if (sb->s_journal_inum) {
 387                         remove_journal_inode(fs);
 388                 }
 389                 if (sb->s_journal_dev) {
 390                         remove_journal_device(fs);
 391                 }
 392         }
 393
 394         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 395                 /*
 396                  * If adding a journal flag, let the create journal
 397                  * code below handle setting the flag and creating the
 398                  * journal.  We supply a default size if necessary.
 399                  */
 400                 if (!journal_size)
 401                         journal_size = -1;
 402                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 403         }
 404
 405         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 406                 if (!sb->s_def_hash_version)
 407                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 408                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 409                         uuid_generate((unsigned char *) sb->s_hash_seed);
 410         }
 411
 412         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 413                 if (ext2fs_check_desc(fs)) {
 414                         fputs(_("Clearing the flex_bg flag would "
 415                                 "cause the the filesystem to be\n"
 416                                 "inconsistent.\n"), stderr);
 417                         exit(1);
 418                 }
 419         }
 420
 421         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 422                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 423                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 424                     !(mount_flags & EXT2_MF_READONLY)) {
 425                         fputs(_("The huge_file feature may only be "
 426                                 "cleared when the filesystem is\n"
 427                                 "unmounted or mounted "
 428                                 "read-only.\n"), stderr);
 429                         exit(1);
 430                 }
 431         }
 432
 433         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 434             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 435              sb->s_feature_incompat))
 436                 ext2fs_update_dynamic_rev(fs);
 437
 438         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 439                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 440             FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 441                             EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
 442             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 443                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 444             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 445                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 446             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 447                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 448             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 449                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
 450                 sb->s_state &= ~EXT2_VALID_FS;
 451                 printf("\n%s\n", _(please_fsck));
 452                 if (mount_flags & EXT2_MF_READONLY)
 453                         printf(_("(and reboot afterwards!)\n"));
 454         }
 455
 456         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 457             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 458             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 459                 ext2fs_mark_super_dirty(fs);
 460 }
 461
 462 /*
 463  * Add a journal to the filesystem.
 464  */
 465 static void add_journal(ext2_filsys fs)
 466 {
 467         unsigned long journal_blocks;
 468         errcode_t       retval;
 469         ext2_filsys     jfs;
 470         io_manager      io_ptr;
 471
 472         if (fs->super->s_feature_compat &
 473             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 474                 fputs(_("The filesystem already has a journal.\n"), stderr);
 475                 goto err;
 476         }
 477         if (journal_device) {
 478                 check_plausibility(journal_device);
 479                 check_mount(journal_device, 0, _("journal"));
 480 #ifdef CONFIG_TESTIO_DEBUG
 481                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 482                         io_ptr = test_io_manager;
 483                         test_io_backing_manager = unix_io_manager;
 484                 } else
 485 #endif
 486                         io_ptr = unix_io_manager;
 487                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 488                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 489                                      fs->blocksize, io_ptr, &jfs);
 490                 if (retval) {
 491                         com_err(program_name, retval,
 492                                 _("\n\twhile trying to open journal on %s\n"),
 493                                 journal_device);
 494                         goto err;
 495                 }
 496                 printf(_("Creating journal on device %s: "),
 497                        journal_device);
 498                 fflush(stdout);
 499
 500                 retval = ext2fs_add_journal_device(fs, jfs);
 501                 ext2fs_close(jfs);
 502                 if (retval) {
 503                         com_err(program_name, retval,
 504                                 _("while adding filesystem to journal on %s"),
 505                                 journal_device);
 506                         goto err;
 507                 }
 508                 fputs(_("done\n"), stdout);
 509         } else if (journal_size) {
 510                 fputs(_("Creating journal inode: "), stdout);
 511                 fflush(stdout);
 512                 journal_blocks = figure_journal_size(journal_size, fs);
 513
 514                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 515                                                   journal_flags);
 516                 if (retval) {
 517                         fprintf(stderr, "\n");
 518                         com_err(program_name, retval,
 519                                 _("\n\twhile trying to create journal file"));
 520                         exit(1);
 521                 } else
 522                         fputs(_("done\n"), stdout);
 523                 /*
 524                  * If the filesystem wasn't mounted, we need to force
 525                  * the block group descriptors out.
 526                  */
 527                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 528                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 529         }
 530         print_check_message(fs);
 531         return;
 532
 533 err:
 534         free(journal_device);
 535         exit(1);
 536 }
 537
 538
 539 static void parse_e2label_options(int argc, char ** argv)
 540 {
 541         if ((argc < 2) || (argc > 3)) {
 542                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 543                 exit(1);
 544         }
 545         io_options = strchr(argv[1], '?');
 546         if (io_options)
 547                 *io_options++ = 0;
 548         device_name = blkid_get_devname(NULL, argv[1], NULL);
 549         if (!device_name) {
 550                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 551                         argv[1]);
 552                 exit(1);
 553         }
 554         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 555         if (argc == 3) {
 556                 open_flag |= EXT2_FLAG_RW;
 557                 L_flag = 1;
 558                 new_label = argv[2];
 559         } else
 560                 print_label++;
 561 }
 562
 563 static time_t parse_time(char *str)
 564 {
 565         struct  tm      ts;
 566
 567         if (strcmp(str, "now") == 0) {
 568                 return (time(0));
 569         }
 570         memset(&ts, 0, sizeof(ts));
 571 #ifdef HAVE_STRPTIME
 572         strptime(str, "%Y%m%d%H%M%S", &ts);
 573 #else
 574         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 575                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 576         ts.tm_year -= 1900;
 577         ts.tm_mon -= 1;
 578         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 579             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 580             ts.tm_min > 59 || ts.tm_sec > 61)
 581                 ts.tm_mday = 0;
 582 #endif
 583         if (ts.tm_mday == 0) {
 584                 com_err(program_name, 0,
 585                         _("Couldn't parse date/time specifier: %s"),
 586                         str);
 587                 usage();
 588         }
 589         ts.tm_isdst = -1;
 590         return (mktime(&ts));
 591 }
 592
 593 static void parse_tune2fs_options(int argc, char **argv)
 594 {
 595         int c;
 596         char *tmp;
 597         struct group *gr;
 598         struct passwd *pw;
 599
 600         open_flag = 0;
 601
 602         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 603         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
 604                 switch (c) {
 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                             reserved_ratio < 0) {
 726                                 com_err(program_name, 0,
 727                                         _("bad reserved block ratio - %s"),
 728                                         optarg);
 729                                 usage();
 730                         }
 731                         m_flag = 1;
 732                         open_flag = EXT2_FLAG_RW;
 733                         break;
 734                 case 'M':
 735                         new_last_mounted = optarg;
 736                         M_flag = 1;
 737                         open_flag = EXT2_FLAG_RW;
 738                         break;
 739                 case 'o':
 740                         if (mntopts_cmd) {
 741                                 com_err(program_name, 0,
 742                                         _("-o may only be specified once"));
 743                                 usage();
 744                         }
 745                         mntopts_cmd = optarg;
 746                         open_flag = EXT2_FLAG_RW;
 747                         break;
 748
 749                 case 'O':
 750                         if (features_cmd) {
 751                                 com_err(program_name, 0,
 752                                         _("-O may only be specified once"));
 753                                 usage();
 754                         }
 755                         features_cmd = optarg;
 756                         open_flag = EXT2_FLAG_RW;
 757                         break;
 758                 case 'r':
 759                         reserved_blocks = strtoul(optarg, &tmp, 0);
 760                         if (*tmp) {
 761                                 com_err(program_name, 0,
 762                                         _("bad reserved blocks count - %s"),
 763                                         optarg);
 764                                 usage();
 765                         }
 766                         r_flag = 1;
 767                         open_flag = EXT2_FLAG_RW;
 768                         break;
 769                 case 's': /* Deprecated */
 770                         s_flag = atoi(optarg);
 771                         open_flag = EXT2_FLAG_RW;
 772                         break;
 773                 case 'T':
 774                         T_flag = 1;
 775                         last_check_time = parse_time(optarg);
 776                         open_flag = EXT2_FLAG_RW;
 777                         break;
 778                 case 'u':
 779                                 resuid = strtoul(optarg, &tmp, 0);
 780                                 if (*tmp) {
 781                                         pw = getpwnam(optarg);
 782                                         if (pw == NULL)
 783                                                 tmp = optarg;
 784                                         else {
 785                                                 resuid = pw->pw_uid;
 786                                                 *tmp = 0;
 787                                         }
 788                                 }
 789                                 if (*tmp) {
 790                                         com_err(program_name, 0,
 791                                                 _("bad uid/user name - %s"),
 792                                                 optarg);
 793                                         usage();
 794                                 }
 795                                 u_flag = 1;
 796                                 open_flag = EXT2_FLAG_RW;
 797                                 break;
 798                 case 'U':
 799                         new_UUID = optarg;
 800                         U_flag = 1;
 801                         open_flag = EXT2_FLAG_RW |
 802                                 EXT2_FLAG_JOURNAL_DEV_OK;
 803                         break;
 804                 case 'I':
 805                         new_inode_size = strtoul(optarg, &tmp, 0);
 806                         if (*tmp) {
 807                                 com_err(program_name, 0,
 808                                         _("bad inode size - %s"),
 809                                         optarg);
 810                                 usage();
 811                         }
 812                         if (!((new_inode_size &
 813                                (new_inode_size - 1)) == 0)) {
 814                                 com_err(program_name, 0,
 815                                         _("Inode size must be a "
 816                                           "power of two- %s"),
 817                                         optarg);
 818                                 usage();
 819                         }
 820                         open_flag = EXT2_FLAG_RW;
 821                         I_flag = 1;
 822                         break;
 823                 default:
 824                         usage();
 825                 }
 826         if (optind < argc - 1 || optind == argc)
 827                 usage();
 828         if (!open_flag && !l_flag)
 829                 usage();
 830         io_options = strchr(argv[optind], '?');
 831         if (io_options)
 832                 *io_options++ = 0;
 833         device_name = blkid_get_devname(NULL, argv[optind], NULL);
 834         if (!device_name) {
 835                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
 836                         argv[optind]);
 837                 exit(1);
 838         }
 839 }
 840
 841 #ifdef CONFIG_BUILD_FINDFS
 842 void do_findfs(int argc, char **argv)
 843 {
 844         char    *dev;
 845
 846         if ((argc != 2) ||
 847             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
 848                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
 849                 exit(2);
 850         }
 851         dev = blkid_get_devname(NULL, argv[1], NULL);
 852         if (!dev) {
 853                 com_err("findfs", 0, _("Unable to resolve '%s'"),
 854                         argv[1]);
 855                 exit(1);
 856         }
 857         puts(dev);
 858         exit(0);
 859 }
 860 #endif
 861
 862 static void parse_extended_opts(ext2_filsys fs, const char *opts)
 863 {
 864         char    *buf, *token, *next, *p, *arg;
 865         int     len, hash_alg;
 866         int     r_usage = 0;
 867
 868         len = strlen(opts);
 869         buf = malloc(len+1);
 870         if (!buf) {
 871                 fprintf(stderr,
 872                         _("Couldn't allocate memory to parse options!\n"));
 873                 exit(1);
 874         }
 875         strcpy(buf, opts);
 876         for (token = buf; token && *token; token = next) {
 877                 p = strchr(token, ',');
 878                 next = 0;
 879                 if (p) {
 880                         *p = 0;
 881                         next = p+1;
 882                 }
 883                 arg = strchr(token, '=');
 884                 if (arg) {
 885                         *arg = 0;
 886                         arg++;
 887                 }
 888                 if (!strcmp(token, "test_fs")) {
 889                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 890                         printf("Setting test filesystem flag\n");
 891                         ext2fs_mark_super_dirty(fs);
 892                 } else if (!strcmp(token, "^test_fs")) {
 893                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
 894                         printf("Clearing test filesystem flag\n");
 895                         ext2fs_mark_super_dirty(fs);
 896                 } else if (strcmp(token, "stride") == 0) {
 897                         if (!arg) {
 898                                 r_usage++;
 899                                 continue;
 900                         }
 901                         stride = strtoul(arg, &p, 0);
 902                         if (*p || (stride == 0)) {
 903                                 fprintf(stderr,
 904                                        _("Invalid RAID stride: %s\n"),
 905                                         arg);
 906                                 r_usage++;
 907                                 continue;
 908                         }
 909                         stride_set = 1;
 910                 } else if (strcmp(token, "stripe-width") == 0 ||
 911                            strcmp(token, "stripe_width") == 0) {
 912                         if (!arg) {
 913                                 r_usage++;
 914                                 continue;
 915                         }
 916                         stripe_width = strtoul(arg, &p, 0);
 917                         if (*p || (stripe_width == 0)) {
 918                                 fprintf(stderr,
 919                                         _("Invalid RAID stripe-width: %s\n"),
 920                                         arg);
 921                                 r_usage++;
 922                                 continue;
 923                         }
 924                         stripe_width_set = 1;
 925                 } else if (strcmp(token, "hash_alg") == 0 ||
 926                            strcmp(token, "hash-alg") == 0) {
 927                         if (!arg) {
 928                                 r_usage++;
 929                                 continue;
 930                         }
 931                         hash_alg = e2p_string2hash(arg);
 932                         if (hash_alg < 0) {
 933                                 fprintf(stderr,
 934                                         _("Invalid hash algorithm: %s\n"),
 935                                         arg);
 936                                 r_usage++;
 937                                 continue;
 938                         }
 939                         fs->super->s_def_hash_version = hash_alg;
 940                         printf(_("Setting default hash algorithm "
 941                                  "to %s (%d)\n"),
 942                                arg, hash_alg);
 943                         ext2fs_mark_super_dirty(fs);
 944                 } else
 945                         r_usage++;
 946         }
 947         if (r_usage) {
 948                 fprintf(stderr, _("\nBad options specified.\n\n"
 949                         "Extended options are separated by commas, "
 950                         "and may take an argument which\n"
 951                         "\tis set off by an equals ('=') sign.\n\n"
 952                         "Valid extended options are:\n"
 953                         "\tstride=<RAID per-disk chunk size in blocks>\n"
 954                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
 955                         "\thash_alg=<hash algorithm>\n"
 956                         "\ttest_fs\n"
 957                         "\t^test_fs\n"));
 958                 free(buf);
 959                 exit(1);
 960         }
 961         free(buf);
 962 }
 963
 964 /*
 965  * Fill in the block bitmap bmap with the information regarding the
 966  * blocks to be moved
 967  */
 968 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
 969                             ext2fs_block_bitmap bmap)
 970 {
 971         dgrp_t i;
 972         int retval;
 973         ext2_badblocks_list bb_list = 0;
 974         blk_t j, needed_blocks = 0;
 975         blk_t start_blk, end_blk;
 976
 977         retval = ext2fs_read_bb_inode(fs, &bb_list);
 978         if (retval)
 979                 return retval;
 980
 981         for (i = 0; i < fs->group_desc_count; i++) {
 982                 start_blk = fs->group_desc[i].bg_inode_table +
 983                                         fs->inode_blocks_per_group;
 984
 985                 end_blk = fs->group_desc[i].bg_inode_table +
 986                                         new_ino_blks_per_grp;
 987
 988                 for (j = start_blk; j < end_blk; j++) {
 989                         if (ext2fs_test_block_bitmap(fs->block_map, j)) {
 990                                 /*
 991                                  * IF the block is a bad block we fail
 992                                  */
 993                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
 994                                         ext2fs_badblocks_list_free(bb_list);
 995                                         return ENOSPC;
 996                                 }
 997
 998                                 ext2fs_mark_block_bitmap(bmap, j);
 999                         } else {
1000                                 /*
1001                                  * We are going to use this block for
1002                                  * inode table. So mark them used.
1003                                  */
1004                                 ext2fs_mark_block_bitmap(fs->block_map, j);
1005                         }
1006                 }
1007                 needed_blocks += end_blk - start_blk;
1008         }
1009
1010         ext2fs_badblocks_list_free(bb_list);
1011         if (needed_blocks > fs->super->s_free_blocks_count)
1012                 return ENOSPC;
1013
1014         return 0;
1015 }
1016
1017 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1018 {
1019         dgrp_t group;
1020         group = ext2fs_group_of_blk(fs, blk);
1021         if (fs->group_desc[group].bg_block_bitmap == blk)
1022                 return 1;
1023         if (fs->group_desc[group].bg_inode_bitmap == blk)
1024                 return 1;
1025         return 0;
1026 }
1027
1028 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1029 {
1030         blk_t start_blk, end_blk;
1031         start_blk = fs->super->s_first_data_block +
1032                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1033         /*
1034          * We cannot get new block beyond end_blk for for the last block group
1035          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1036          */
1037         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1038         if (blk >= start_blk && blk <= end_blk)
1039                 return 1;
1040         return 0;
1041 }
1042
1043 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1044 {
1045
1046         char *buf;
1047         dgrp_t group;
1048         errcode_t retval;
1049         int meta_data = 0;
1050         blk_t blk, new_blk, goal;
1051         struct blk_move *bmv;
1052
1053         retval = ext2fs_get_mem(fs->blocksize, &buf);
1054         if (retval)
1055                 return retval;
1056
1057         for (new_blk = blk = fs->super->s_first_data_block;
1058              blk < fs->super->s_blocks_count; blk++) {
1059                 if (!ext2fs_test_block_bitmap(bmap, blk))
1060                         continue;
1061
1062                 if (ext2fs_is_meta_block(fs, blk)) {
1063                         /*
1064                          * If the block is mapping a fs meta data block
1065                          * like group desc/block bitmap/inode bitmap. We
1066                          * should find a block in the same group and fix
1067                          * the respective fs metadata pointers. Otherwise
1068                          * fail
1069                          */
1070                         group = ext2fs_group_of_blk(fs, blk);
1071                         goal = ext2fs_group_first_block(fs, group);
1072                         meta_data = 1;
1073
1074                 } else {
1075                         goal = new_blk;
1076                 }
1077                 retval = ext2fs_new_block(fs, goal, NULL, &new_blk);
1078                 if (retval)
1079                         goto err_out;
1080
1081                 /* new fs meta data block should be in the same group */
1082                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1083                         retval = ENOSPC;
1084                         goto err_out;
1085                 }
1086
1087                 /* Mark this block as allocated */
1088                 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
1089
1090                 /* Add it to block move list */
1091                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1092                 if (retval)
1093                         goto err_out;
1094
1095                 bmv->old_loc = blk;
1096                 bmv->new_loc = new_blk;
1097
1098                 list_add(&(bmv->list), &blk_move_list);
1099
1100                 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1101                 if (retval)
1102                         goto err_out;
1103
1104                 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1105                 if (retval)
1106                         goto err_out;
1107         }
1108
1109 err_out:
1110         ext2fs_free_mem(&buf);
1111         return retval;
1112 }
1113
1114 static blk_t translate_block(blk_t blk)
1115 {
1116         struct list_head *entry;
1117         struct blk_move *bmv;
1118
1119         list_for_each(entry, &blk_move_list) {
1120                 bmv = list_entry(entry, struct blk_move, list);
1121                 if (bmv->old_loc == blk)
1122                         return bmv->new_loc;
1123         }
1124
1125         return 0;
1126 }
1127
1128 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1129                          blk_t *block_nr,
1130                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1131                          blk_t ref_block EXT2FS_ATTR((unused)),
1132                          int ref_offset EXT2FS_ATTR((unused)),
1133                          void *priv_data)
1134 {
1135         int ret = 0;
1136         blk_t new_blk;
1137         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1138
1139         if (!ext2fs_test_block_bitmap(bmap, *block_nr))
1140                 return 0;
1141         new_blk = translate_block(*block_nr);
1142         if (new_blk) {
1143                 *block_nr = new_blk;
1144                 /*
1145                  * This will force the ext2fs_write_inode in the iterator
1146                  */
1147                 ret |= BLOCK_CHANGED;
1148         }
1149
1150         return ret;
1151 }
1152
1153 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1154 {
1155         errcode_t retval = 0;
1156         ext2_ino_t ino;
1157         blk_t blk;
1158         char *block_buf = 0;
1159         struct ext2_inode inode;
1160         ext2_inode_scan scan = NULL;
1161
1162         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1163         if (retval)
1164                 return retval;
1165
1166         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1167         if (retval)
1168                 goto err_out;
1169
1170         while (1) {
1171                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1172                 if (retval)
1173                         goto err_out;
1174
1175                 if (!ino)
1176                         break;
1177
1178                 if (inode.i_links_count == 0)
1179                         continue; /* inode not in use */
1180
1181                 /* FIXME!!
1182                  * If we end up modifying the journal inode
1183                  * the sb->s_jnl_blocks will differ. But a
1184                  * subsequent e2fsck fixes that.
1185                  * Do we need to fix this ??
1186                  */
1187
1188                 if (inode.i_file_acl &&
1189                     ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) {
1190                         blk = translate_block(inode.i_file_acl);
1191                         if (!blk)
1192                                 continue;
1193
1194                         inode.i_file_acl = blk;
1195
1196                         /*
1197                          * Write the inode to disk so that inode table
1198                          * resizing can work
1199                          */
1200                         retval = ext2fs_write_inode(fs, ino, &inode);
1201                         if (retval)
1202                                 goto err_out;
1203                 }
1204
1205                 if (!ext2fs_inode_has_valid_blocks(&inode))
1206                         continue;
1207
1208                 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
1209                                                process_block, bmap);
1210                 if (retval)
1211                         goto err_out;
1212
1213         }
1214
1215 err_out:
1216         ext2fs_free_mem(&block_buf);
1217
1218         return retval;
1219 }
1220
1221 /*
1222  * We need to scan for inode and block bitmaps that may need to be
1223  * moved.  This can take place if the filesystem was formatted for
1224  * RAID arrays using the mke2fs's extended option "stride".
1225  */
1226 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1227 {
1228         dgrp_t i;
1229         blk_t blk, new_blk;
1230
1231         for (i = 0; i < fs->group_desc_count; i++) {
1232                 blk = fs->group_desc[i].bg_block_bitmap;
1233                 if (ext2fs_test_block_bitmap(bmap, blk)) {
1234                         new_blk = translate_block(blk);
1235                         if (!new_blk)
1236                                 continue;
1237                         fs->group_desc[i].bg_block_bitmap = new_blk;
1238                 }
1239
1240                 blk = fs->group_desc[i].bg_inode_bitmap;
1241                 if (ext2fs_test_block_bitmap(bmap, blk)) {
1242                         new_blk = translate_block(blk);
1243                         if (!new_blk)
1244                                 continue;
1245                         fs->group_desc[i].bg_inode_bitmap = new_blk;
1246                 }
1247         }
1248         return 0;
1249 }
1250
1251 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1252 {
1253         dgrp_t i;
1254         blk_t blk;
1255         errcode_t retval;
1256         int new_ino_blks_per_grp;
1257         unsigned int j;
1258         char *old_itable = NULL, *new_itable = NULL;
1259         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1260         unsigned long old_ino_size;
1261         int old_itable_size, new_itable_size;
1262
1263         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1264         old_ino_size = EXT2_INODE_SIZE(fs->super);
1265
1266         new_ino_blks_per_grp = ext2fs_div_ceil(
1267                                         EXT2_INODES_PER_GROUP(fs->super) *
1268                                         new_ino_size,
1269                                         fs->blocksize);
1270
1271         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1272
1273         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1274         if (retval)
1275                 return retval;
1276
1277         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1278         if (retval)
1279                 goto err_out;
1280
1281         tmp_old_itable = old_itable;
1282         tmp_new_itable = new_itable;
1283
1284         for (i = 0; i < fs->group_desc_count; i++) {
1285                 blk = fs->group_desc[i].bg_inode_table;
1286                 retval = io_channel_read_blk(fs->io, blk,
1287                                 fs->inode_blocks_per_group, old_itable);
1288                 if (retval)
1289                         goto err_out;
1290
1291                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1292                         memcpy(new_itable, old_itable, old_ino_size);
1293
1294                         memset(new_itable+old_ino_size, 0,
1295                                         new_ino_size - old_ino_size);
1296
1297                         new_itable += new_ino_size;
1298                         old_itable += old_ino_size;
1299                 }
1300
1301                 /* reset the pointer */
1302                 old_itable = tmp_old_itable;
1303                 new_itable = tmp_new_itable;
1304
1305                 retval = io_channel_write_blk(fs->io, blk,
1306                                         new_ino_blks_per_grp, new_itable);
1307                 if (retval)
1308                         goto err_out;
1309         }
1310
1311         /* Update the meta data */
1312         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1313         fs->super->s_inode_size = new_ino_size;
1314
1315 err_out:
1316         if (old_itable)
1317                 ext2fs_free_mem(&old_itable);
1318
1319         if (new_itable)
1320                 ext2fs_free_mem(&new_itable);
1321
1322         return retval;
1323 }
1324
1325 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1326 {
1327         blk_t           blk;
1328         ext2_ino_t      ino;
1329         unsigned int    group = 0;
1330         unsigned int    count = 0;
1331         int             total_free = 0;
1332         int             group_free = 0;
1333
1334         /*
1335          * First calculate the block statistics
1336          */
1337         for (blk = fs->super->s_first_data_block;
1338              blk < fs->super->s_blocks_count; blk++) {
1339                 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1340                         group_free++;
1341                         total_free++;
1342                 }
1343                 count++;
1344                 if ((count == fs->super->s_blocks_per_group) ||
1345                     (blk == fs->super->s_blocks_count-1)) {
1346                         fs->group_desc[group++].bg_free_blocks_count =
1347                                 group_free;
1348                         count = 0;
1349                         group_free = 0;
1350                 }
1351         }
1352         fs->super->s_free_blocks_count = total_free;
1353
1354         /*
1355          * Next, calculate the inode statistics
1356          */
1357         group_free = 0;
1358         total_free = 0;
1359         count = 0;
1360         group = 0;
1361
1362         /* Protect loop from wrap-around if s_inodes_count maxed */
1363         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1364                 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1365                         group_free++;
1366                         total_free++;
1367                 }
1368                 count++;
1369                 if ((count == fs->super->s_inodes_per_group) ||
1370                     (ino == fs->super->s_inodes_count)) {
1371                         fs->group_desc[group++].bg_free_inodes_count =
1372                                 group_free;
1373                         count = 0;
1374                         group_free = 0;
1375                 }
1376         }
1377         fs->super->s_free_inodes_count = total_free;
1378         ext2fs_mark_super_dirty(fs);
1379         return 0;
1380 }
1381
1382 #define list_for_each_safe(pos, pnext, head) \
1383         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1384              pos = pnext, pnext = pos->next)
1385
1386 static void free_blk_move_list(void)
1387 {
1388         struct list_head *entry, *tmp;
1389         struct blk_move *bmv;
1390
1391         list_for_each_safe(entry, tmp, &blk_move_list) {
1392                 bmv = list_entry(entry, struct blk_move, list);
1393                 list_del(entry);
1394                 ext2fs_free_mem(&bmv);
1395         }
1396         return;
1397 }
1398
1399 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1400 {
1401         errcode_t retval;
1402         int new_ino_blks_per_grp;
1403         ext2fs_block_bitmap bmap;
1404
1405         ext2fs_read_inode_bitmap(fs);
1406         ext2fs_read_block_bitmap(fs);
1407         INIT_LIST_HEAD(&blk_move_list);
1408
1409
1410         new_ino_blks_per_grp = ext2fs_div_ceil(
1411                                         EXT2_INODES_PER_GROUP(fs->super)*
1412                                         new_size,
1413                                         fs->blocksize);
1414
1415         /* We may change the file system.
1416          * Mark the file system as invalid so that
1417          * the user is prompted to run fsck.
1418          */
1419         fs->super->s_state &= ~EXT2_VALID_FS;
1420
1421         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1422                                                 &bmap);
1423         if (retval) {
1424                 fputs(_("Failed to allocate block bitmap when "
1425                                 "increasing inode size\n"), stderr);
1426                 return retval;
1427         }
1428         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1429         if (retval) {
1430                 fputs(_("Not enough space to increase inode size \n"), stderr);
1431                 goto err_out;
1432         }
1433         retval = move_block(fs, bmap);
1434         if (retval) {
1435                 fputs(_("Failed to relocate blocks during inode resize \n"),
1436                       stderr);
1437                 goto err_out;
1438         }
1439         retval = inode_scan_and_fix(fs, bmap);
1440         if (retval)
1441                 goto err_out_undo;
1442
1443         retval = group_desc_scan_and_fix(fs, bmap);
1444         if (retval)
1445                 goto err_out_undo;
1446
1447         retval = expand_inode_table(fs, new_size);
1448         if (retval)
1449                 goto err_out_undo;
1450
1451         ext2fs_calculate_summary_stats(fs);
1452
1453         fs->super->s_state |= EXT2_VALID_FS;
1454         /* mark super block and block bitmap as dirty */
1455         ext2fs_mark_super_dirty(fs);
1456         ext2fs_mark_bb_dirty(fs);
1457
1458 err_out:
1459         free_blk_move_list();
1460         ext2fs_free_block_bitmap(bmap);
1461
1462         return retval;
1463
1464 err_out_undo:
1465         free_blk_move_list();
1466         ext2fs_free_block_bitmap(bmap);
1467         fputs(_("Error in resizing the inode size.\n"
1468                         "Run e2undo to undo the "
1469                         "file system changes. \n"), stderr);
1470
1471         return retval;
1472 }
1473
1474 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1475 {
1476         errcode_t retval = 0;
1477         const char *tdb_dir;
1478         char *tdb_file;
1479         char *dev_name, *tmp_name;
1480
1481 #if 0 /* FIXME!! */
1482         /*
1483          * Configuration via a conf file would be
1484          * nice
1485          */
1486         profile_get_string(profile, "scratch_files",
1487                                         "directory", 0, 0,
1488                                         &tdb_dir);
1489 #endif
1490         tmp_name = strdup(name);
1491         if (!tmp_name) {
1492         alloc_fn_fail:
1493                 com_err(program_name, ENOMEM,
1494                         _("Couldn't allocate memory for tdb filename\n"));
1495                 return ENOMEM;
1496         }
1497         dev_name = basename(tmp_name);
1498
1499         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1500         if (!tdb_dir)
1501                 tdb_dir = "/var/lib/e2fsprogs";
1502
1503         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1504             access(tdb_dir, W_OK))
1505                 return 0;
1506
1507         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1508         if (!tdb_file)
1509                 goto alloc_fn_fail;
1510         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1511
1512         if (!access(tdb_file, F_OK)) {
1513                 if (unlink(tdb_file) < 0) {
1514                         retval = errno;
1515                         com_err(program_name, retval,
1516                                 _("while trying to delete %s"),
1517                                 tdb_file);
1518                         free(tdb_file);
1519                         return retval;
1520                 }
1521         }
1522
1523         set_undo_io_backing_manager(*io_ptr);
1524         *io_ptr = undo_io_manager;
1525         set_undo_io_backup_file(tdb_file);
1526         printf(_("To undo the tune2fs operation please run "
1527                  "the command\n    e2undo %s %s\n\n"),
1528                  tdb_file, name);
1529         free(tdb_file);
1530         free(tmp_name);
1531         return retval;
1532 }
1533
1534 int main(int argc, char **argv)
1535 {
1536         errcode_t retval;
1537         ext2_filsys fs;
1538         struct ext2_super_block *sb;
1539         io_manager io_ptr, io_ptr_orig = NULL;
1540
1541 #ifdef ENABLE_NLS
1542         setlocale(LC_MESSAGES, "");
1543         setlocale(LC_CTYPE, "");
1544         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1545         textdomain(NLS_CAT_NAME);
1546 #endif
1547         if (argc && *argv)
1548                 program_name = *argv;
1549         add_error_table(&et_ext2_error_table);
1550
1551 #ifdef CONFIG_BUILD_FINDFS
1552         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1553                 do_findfs(argc, argv);
1554 #endif
1555         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1556                 parse_e2label_options(argc, argv);
1557         else
1558                 parse_tune2fs_options(argc, argv);
1559
1560 #ifdef CONFIG_TESTIO_DEBUG
1561         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1562                 io_ptr = test_io_manager;
1563                 test_io_backing_manager = unix_io_manager;
1564         } else
1565 #endif
1566                 io_ptr = unix_io_manager;
1567
1568 retry_open:
1569         retval = ext2fs_open2(device_name, io_options, open_flag,
1570                               0, 0, io_ptr, &fs);
1571         if (retval) {
1572                         com_err(program_name, retval,
1573                                 _("while trying to open %s"),
1574                         device_name);
1575                 fprintf(stderr,
1576                         _("Couldn't find valid filesystem superblock.\n"));
1577                 exit(1);
1578         }
1579
1580         if (I_flag && !io_ptr_orig) {
1581                 /*
1582                  * Check the inode size is right so we can issue an
1583                  * error message and bail before setting up the tdb
1584                  * file.
1585                  */
1586                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1587                         fprintf(stderr, _("The inode size is already %lu\n"),
1588                                 new_inode_size);
1589                         exit(1);
1590                 }
1591                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1592                         fprintf(stderr, _("Shrinking the inode size is "
1593                                           "not supported\n"));
1594                         exit(1);
1595                 }
1596
1597                 /*
1598                  * If inode resize is requested use the
1599                  * Undo I/O manager
1600                  */
1601                 io_ptr_orig = io_ptr;
1602                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1603                 if (retval)
1604                         exit(1);
1605                 if (io_ptr != io_ptr_orig) {
1606                         ext2fs_close(fs);
1607                         goto retry_open;
1608                 }
1609         }
1610
1611         sb = fs->super;
1612         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1613
1614         if (print_label) {
1615                 /* For e2label emulation */
1616                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1617                        sb->s_volume_name);
1618                 remove_error_table(&et_ext2_error_table);
1619                 exit(0);
1620         }
1621
1622         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1623         if (retval) {
1624                 com_err("ext2fs_check_if_mount", retval,
1625                         _("while determining whether %s is mounted."),
1626                         device_name);
1627                 exit(1);
1628         }
1629         /* Normally we only need to write out the superblock */
1630         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1631
1632         if (c_flag) {
1633                 sb->s_max_mnt_count = max_mount_count;
1634                 ext2fs_mark_super_dirty(fs);
1635                 printf(_("Setting maximal mount count to %d\n"),
1636                        max_mount_count);
1637         }
1638         if (C_flag) {
1639                 sb->s_mnt_count = mount_count;
1640                 ext2fs_mark_super_dirty(fs);
1641                 printf(_("Setting current mount count to %d\n"), mount_count);
1642         }
1643         if (e_flag) {
1644                 sb->s_errors = errors;
1645                 ext2fs_mark_super_dirty(fs);
1646                 printf(_("Setting error behavior to %d\n"), errors);
1647         }
1648         if (g_flag) {
1649                 sb->s_def_resgid = resgid;
1650                 ext2fs_mark_super_dirty(fs);
1651                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1652         }
1653         if (i_flag) {
1654                 sb->s_checkinterval = interval;
1655                 ext2fs_mark_super_dirty(fs);
1656                 printf(_("Setting interval between checks to %lu seconds\n"),
1657                        interval);
1658         }
1659         if (m_flag) {
1660                 sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
1661                                         sb->s_blocks_count / 100.0);
1662                 ext2fs_mark_super_dirty(fs);
1663                 printf(_("Setting reserved blocks percentage to %g%% "
1664                          "(%u blocks)\n"),
1665                        reserved_ratio, sb->s_r_blocks_count);
1666         }
1667         if (r_flag) {
1668                 if (reserved_blocks >= sb->s_blocks_count/2) {
1669                         com_err(program_name, 0,
1670                                 _("reserved blocks count is too big (%lu)"),
1671                                 reserved_blocks);
1672                         exit(1);
1673                 }
1674                 sb->s_r_blocks_count = reserved_blocks;
1675                 ext2fs_mark_super_dirty(fs);
1676                 printf(_("Setting reserved blocks count to %lu\n"),
1677                        reserved_blocks);
1678         }
1679         if (s_flag == 1) {
1680                 if (sb->s_feature_ro_compat &
1681                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1682                         fputs(_("\nThe filesystem already has sparse "
1683                                 "superblocks.\n"), stderr);
1684                 else {
1685                         sb->s_feature_ro_compat |=
1686                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1687                         sb->s_state &= ~EXT2_VALID_FS;
1688                         ext2fs_mark_super_dirty(fs);
1689                         printf(_("\nSparse superblock flag set.  %s"),
1690                                _(please_fsck));
1691                 }
1692         }
1693         if (s_flag == 0) {
1694                 fputs(_("\nClearing the sparse superflag not supported.\n"),
1695                       stderr);
1696                 exit(1);
1697         }
1698         if (T_flag) {
1699                 sb->s_lastcheck = last_check_time;
1700                 ext2fs_mark_super_dirty(fs);
1701                 printf(_("Setting time filesystem last checked to %s\n"),
1702                        ctime(&last_check_time));
1703         }
1704         if (u_flag) {
1705                 sb->s_def_resuid = resuid;
1706                 ext2fs_mark_super_dirty(fs);
1707                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
1708         }
1709         if (L_flag) {
1710                 if (strlen(new_label) > sizeof(sb->s_volume_name))
1711                         fputs(_("Warning: label too long, truncating.\n"),
1712                               stderr);
1713                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1714                 strncpy(sb->s_volume_name, new_label,
1715                         sizeof(sb->s_volume_name));
1716                 ext2fs_mark_super_dirty(fs);
1717         }
1718         if (M_flag) {
1719                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1720                 strncpy(sb->s_last_mounted, new_last_mounted,
1721                         sizeof(sb->s_last_mounted));
1722                 ext2fs_mark_super_dirty(fs);
1723         }
1724         if (mntopts_cmd)
1725                 update_mntopts(fs, mntopts_cmd);
1726         if (features_cmd)
1727                 update_feature_set(fs, features_cmd);
1728         if (extended_cmd)
1729                 parse_extended_opts(fs, extended_cmd);
1730         if (journal_size || journal_device)
1731                 add_journal(fs);
1732
1733         if (U_flag) {
1734                 int set_csum = 0;
1735                 dgrp_t i;
1736
1737                 if (sb->s_feature_ro_compat &
1738                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1739                         /*
1740                          * Determine if the block group checksums are
1741                          * correct so we know whether or not to set
1742                          * them later on.
1743                          */
1744                         for (i = 0; i < fs->group_desc_count; i++)
1745                                 if (!ext2fs_group_desc_csum_verify(fs, i))
1746                                         break;
1747                         if (i >= fs->group_desc_count)
1748                                 set_csum = 1;
1749                 }
1750                 if ((strcasecmp(new_UUID, "null") == 0) ||
1751                     (strcasecmp(new_UUID, "clear") == 0)) {
1752                         uuid_clear(sb->s_uuid);
1753                 } else if (strcasecmp(new_UUID, "time") == 0) {
1754                         uuid_generate_time(sb->s_uuid);
1755                 } else if (strcasecmp(new_UUID, "random") == 0) {
1756                         uuid_generate(sb->s_uuid);
1757                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1758                         com_err(program_name, 0, _("Invalid UUID format\n"));
1759                         exit(1);
1760                 }
1761                 if (set_csum) {
1762                         for (i = 0; i < fs->group_desc_count; i++)
1763                                 ext2fs_group_desc_csum_set(fs, i);
1764                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1765                 }
1766                 ext2fs_mark_super_dirty(fs);
1767         }
1768         if (I_flag) {
1769                 if (mount_flags & EXT2_MF_MOUNTED) {
1770                         fputs(_("The inode size may only be "
1771                                 "changed when the filesystem is "
1772                                 "unmounted.\n"), stderr);
1773                         exit(1);
1774                 }
1775                 if (fs->super->s_feature_incompat &
1776                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
1777                         fputs(_("Changing the inode size not supported for "
1778                                 "filesystems with the flex_bg\n"
1779                                 "feature enabled.\n"),
1780                               stderr);
1781                         exit(1);
1782                 }
1783                 /*
1784                  * We want to update group descriptor also
1785                  * with the new free inode count
1786                  */
1787                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1788                 if (resize_inode(fs, new_inode_size) == 0) {
1789                         printf(_("Setting inode size %lu\n"),
1790                                                         new_inode_size);
1791                 }
1792         }
1793
1794         if (l_flag)
1795                 list_super(sb);
1796         if (stride_set) {
1797                 sb->s_raid_stride = stride;
1798                 ext2fs_mark_super_dirty(fs);
1799                 printf(_("Setting stride size to %d\n"), stride);
1800         }
1801         if (stripe_width_set) {
1802                 sb->s_raid_stripe_width = stripe_width;
1803                 ext2fs_mark_super_dirty(fs);
1804                 printf(_("Setting stripe width to %d\n"), stripe_width);
1805         }
1806         free(device_name);
1807         remove_error_table(&et_ext2_error_table);
1808         return (ext2fs_close(fs) ? 1 : 0);
1809 }