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 #include "config.h"
  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 #ifdef HAVE_STRINGS_H
  44 #include <strings.h>    /* for strcasecmp() */
  45 #else
  46 #define _BSD_SOURCE     /* for inclusion of strcasecmp() via <string.h> */
  47 #endif
  48 #include <string.h>
  49 #include <time.h>
  50 #include <unistd.h>
  51 #include <sys/types.h>
  52 #include <libgen.h>
  53 #include <limits.h>
  54
  55 #include "ext2fs/ext2_fs.h"
  56 #include "ext2fs/ext2fs.h"
  57 #include "ext2fs/kernel-jbd.h"
  58 #include "et/com_err.h"
  59 #include "support/plausible.h"
  60 #include "support/quotaio.h"
  61 #include "uuid/uuid.h"
  62 #include "e2p/e2p.h"
  63 #include "util.h"
  64 #include "blkid/blkid.h"
  65
  66 #include "../version.h"
  67 #include "support/nls-enable.h"
  68
  69 #define QOPT_ENABLE     (1)
  70 #define QOPT_DISABLE    (-1)
  71
  72 extern int ask_yn(const char *string, int def);
  73
  74 const char *program_name = "tune2fs";
  75 char *device_name;
  76 char *new_label, *new_last_mounted, *new_UUID;
  77 char *io_options;
  78 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  79 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  80 static int I_flag;
  81 static int clear_mmp;
  82 static time_t last_check_time;
  83 static int print_label;
  84 static int max_mount_count, mount_count, mount_flags;
  85 static unsigned long interval;
  86 static blk64_t reserved_blocks;
  87 static double reserved_ratio;
  88 static unsigned long resgid, resuid;
  89 static unsigned short errors;
  90 static int open_flag;
  91 static char *features_cmd;
  92 static char *mntopts_cmd;
  93 static int stride, stripe_width;
  94 static int stride_set, stripe_width_set;
  95 static char *extended_cmd;
  96 static unsigned long new_inode_size;
  97 static char *ext_mount_opts;
  98 static int quota_enable[MAXQUOTAS];
  99 static int rewrite_checksums;
 100 static int feature_64bit;
 101 static int fsck_requested;
 102 static char *undo_file;
 103
 104 int journal_size, journal_flags;
 105 char *journal_device;
 106 static blk64_t journal_location = ~0LL;
 107
 108 static struct list_head blk_move_list;
 109
 110 struct blk_move {
 111         struct list_head list;
 112         blk64_t old_loc;
 113         blk64_t new_loc;
 114 };
 115
 116
 117 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 118 static const char *please_dir_fsck =
 119                 N_("Please run e2fsck -D on the filesystem.\n");
 120
 121 #ifdef CONFIG_BUILD_FINDFS
 122 void do_findfs(int argc, char **argv);
 123 #endif
 124
 125 static void usage(void)
 126 {
 127         fprintf(stderr,
 128                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 129                   "[-g group]\n"
 130                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 131                   "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
 132                   "\t[-p mmp_update_interval] [-r reserved_blocks_count] "
 133                   "[-u user]\n"
 134                   "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n"
 135                   "\t[-O [^]feature[,...]] [-Q quota_options]\n"
 136                   "\t[-E extended-option[,...]] [-T last_check_time] "
 137                   "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
 138                 program_name);
 139         exit(1);
 140 }
 141
 142 static __u32 ok_features[3] = {
 143         /* Compat */
 144         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 145                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 146         /* Incompat */
 147         EXT2_FEATURE_INCOMPAT_FILETYPE |
 148                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 149                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 150                 EXT4_FEATURE_INCOMPAT_MMP |
 151                 EXT4_FEATURE_INCOMPAT_64BIT |
 152                 EXT4_FEATURE_INCOMPAT_ENCRYPT,
 153         /* R/O compat */
 154         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 155                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 156                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 157                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 158                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 159                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 160                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 161                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 162                 EXT4_FEATURE_RO_COMPAT_READONLY |
 163                 EXT4_FEATURE_RO_COMPAT_PROJECT
 164 };
 165
 166 static __u32 clear_ok_features[3] = {
 167         /* Compat */
 168         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 169                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 170                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 171         /* Incompat */
 172         EXT2_FEATURE_INCOMPAT_FILETYPE |
 173                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 174                 EXT4_FEATURE_INCOMPAT_MMP |
 175                 EXT4_FEATURE_INCOMPAT_64BIT,
 176         /* R/O compat */
 177         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 178                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 179                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 180                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 181                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 182                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 183                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 184                 EXT4_FEATURE_RO_COMPAT_READONLY
 185 };
 186
 187 /**
 188  * Try to get journal super block if any
 189  */
 190 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 191 {
 192         int retval;
 193         journal_superblock_t *jsb;
 194
 195         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 196                 return EXT2_ET_UNSUPP_FEATURE;
 197         }
 198
 199         /* Get the journal superblock */
 200         if ((retval = io_channel_read_blk64(jfs->io,
 201             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 202                 com_err(program_name, retval, "%s",
 203                 _("while reading journal superblock"));
 204                 return retval;
 205         }
 206
 207         jsb = (journal_superblock_t *) buf;
 208         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 209             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 210                 fputs(_("Journal superblock not found!\n"), stderr);
 211                 return EXT2_ET_BAD_MAGIC;
 212         }
 213
 214         return 0;
 215 }
 216
 217 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
 218                           int nr_users)
 219 {
 220         int i;
 221         for (i = 0; i < nr_users; i++) {
 222                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 223                         return &s_users[i * UUID_SIZE];
 224         }
 225
 226         return NULL;
 227 }
 228
 229 /*
 230  * Remove an external journal from the filesystem
 231  */
 232 static int remove_journal_device(ext2_filsys fs)
 233 {
 234         char            *journal_path;
 235         ext2_filsys     jfs;
 236         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 237         journal_superblock_t    *jsb;
 238         int             i, nr_users;
 239         errcode_t       retval;
 240         int             commit_remove_journal = 0;
 241         io_manager      io_ptr;
 242
 243         if (f_flag)
 244                 commit_remove_journal = 1; /* force removal even if error */
 245
 246         uuid_unparse(fs->super->s_journal_uuid, buf);
 247         journal_path = blkid_get_devname(NULL, "UUID", buf);
 248
 249         if (!journal_path) {
 250                 journal_path =
 251                         ext2fs_find_block_device(fs->super->s_journal_dev);
 252                 if (!journal_path)
 253                         goto no_valid_journal;
 254         }
 255
 256 #ifdef CONFIG_TESTIO_DEBUG
 257         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 258                 io_ptr = test_io_manager;
 259                 test_io_backing_manager = unix_io_manager;
 260         } else
 261 #endif
 262                 io_ptr = unix_io_manager;
 263         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 264                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 265                              fs->blocksize, io_ptr, &jfs);
 266         if (retval) {
 267                 com_err(program_name, retval, "%s",
 268                         _("while trying to open external journal"));
 269                 goto no_valid_journal;
 270         }
 271
 272         if ((retval = get_journal_sb(jfs, buf))) {
 273                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 274                         fprintf(stderr, _("%s is not a journal device.\n"),
 275                                 journal_path);
 276                 goto no_valid_journal;
 277         }
 278
 279         jsb = (journal_superblock_t *) buf;
 280         /* Find the filesystem UUID */
 281         nr_users = ntohl(jsb->s_nr_users);
 282
 283         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 284                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 285                       stderr);
 286                 commit_remove_journal = 1;
 287                 goto no_valid_journal;
 288         }
 289         nr_users--;
 290         for (i = 0; i < nr_users; i++)
 291                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 292         jsb->s_nr_users = htonl(nr_users);
 293
 294         /* Write back the journal superblock */
 295         retval = io_channel_write_blk64(jfs->io,
 296                                         ext2fs_journal_sb_start(fs->blocksize),
 297                                         -SUPERBLOCK_SIZE, buf);
 298         if (retval) {
 299                 com_err(program_name, retval,
 300                         "while writing journal superblock.");
 301                 goto no_valid_journal;
 302         }
 303
 304         commit_remove_journal = 1;
 305
 306 no_valid_journal:
 307         if (commit_remove_journal == 0) {
 308                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 309                         "Use -f option to remove missing journal device.\n"),
 310                       stderr);
 311                 return 1;
 312         }
 313         fs->super->s_journal_dev = 0;
 314         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 315         uuid_clear(fs->super->s_journal_uuid);
 316         ext2fs_mark_super_dirty(fs);
 317         fputs(_("Journal removed\n"), stdout);
 318         free(journal_path);
 319
 320         return 0;
 321 }
 322
 323 /* Helper function for remove_journal_inode */
 324 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 325                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 326                                blk64_t ref_block EXT2FS_ATTR((unused)),
 327                                int ref_offset EXT2FS_ATTR((unused)),
 328                                void *private EXT2FS_ATTR((unused)))
 329 {
 330         blk64_t block;
 331         int     group;
 332
 333         block = *blocknr;
 334         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 335         group = ext2fs_group_of_blk2(fs, block);
 336         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 337         ext2fs_group_desc_csum_set(fs, group);
 338         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 339         return 0;
 340 }
 341
 342 /*
 343  * Remove the journal inode from the filesystem
 344  */
 345 static errcode_t remove_journal_inode(ext2_filsys fs)
 346 {
 347         struct ext2_inode       inode;
 348         errcode_t               retval;
 349         ino_t                   ino = fs->super->s_journal_inum;
 350
 351         retval = ext2fs_read_inode(fs, ino,  &inode);
 352         if (retval) {
 353                 com_err(program_name, retval, "%s",
 354                         _("while reading journal inode"));
 355                 return retval;
 356         }
 357         if (ino == EXT2_JOURNAL_INO) {
 358                 retval = ext2fs_read_bitmaps(fs);
 359                 if (retval) {
 360                         com_err(program_name, retval, "%s",
 361                                 _("while reading bitmaps"));
 362                         return retval;
 363                 }
 364                 retval = ext2fs_block_iterate3(fs, ino,
 365                                                BLOCK_FLAG_READ_ONLY, NULL,
 366                                                release_blocks_proc, NULL);
 367                 if (retval) {
 368                         com_err(program_name, retval, "%s",
 369                                 _("while clearing journal inode"));
 370                         return retval;
 371                 }
 372                 memset(&inode, 0, sizeof(inode));
 373                 ext2fs_mark_bb_dirty(fs);
 374                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 375         } else
 376                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 377         retval = ext2fs_write_inode(fs, ino, &inode);
 378         if (retval) {
 379                 com_err(program_name, retval, "%s",
 380                         _("while writing journal inode"));
 381                 return retval;
 382         }
 383         fs->super->s_journal_inum = 0;
 384         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 385         ext2fs_mark_super_dirty(fs);
 386
 387         return 0;
 388 }
 389
 390 /*
 391  * Update the default mount options
 392  */
 393 static int update_mntopts(ext2_filsys fs, char *mntopts)
 394 {
 395         struct ext2_super_block *sb = fs->super;
 396
 397         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 398                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 399                         mntopts);
 400                 return 1;
 401         }
 402         ext2fs_mark_super_dirty(fs);
 403
 404         return 0;
 405 }
 406
 407 static int check_fsck_needed(ext2_filsys fs)
 408 {
 409         if (fs->super->s_state & EXT2_VALID_FS)
 410                 return 0;
 411         printf("\n%s\n", _(please_fsck));
 412         if (mount_flags & EXT2_MF_READONLY)
 413                 printf("%s", _("(and reboot afterwards!)\n"));
 414         return 1;
 415 }
 416
 417 static void request_dir_fsck_afterwards(ext2_filsys fs)
 418 {
 419         static int requested;
 420
 421         if (requested++)
 422                 return;
 423         fsck_requested++;
 424         fs->super->s_state &= ~EXT2_VALID_FS;
 425         printf("\n%s\n", _(please_dir_fsck));
 426         if (mount_flags & EXT2_MF_READONLY)
 427                 printf("%s", _("(and reboot afterwards!)\n"));
 428 }
 429
 430 static void request_fsck_afterwards(ext2_filsys fs)
 431 {
 432         static int requested = 0;
 433
 434         if (requested++)
 435                 return;
 436         fsck_requested++;
 437         fs->super->s_state &= ~EXT2_VALID_FS;
 438         printf("\n%s\n", _(please_fsck));
 439         if (mount_flags & EXT2_MF_READONLY)
 440                 printf("%s", _("(and reboot afterwards!)\n"));
 441 }
 442
 443 static void convert_64bit(ext2_filsys fs, int direction)
 444 {
 445         if (!direction)
 446                 return;
 447
 448         /*
 449          * Is resize2fs going to demand a fsck run? Might as well tell the
 450          * user now.
 451          */
 452         if (!fsck_requested &&
 453             ((fs->super->s_state & EXT2_ERROR_FS) ||
 454              !(fs->super->s_state & EXT2_VALID_FS) ||
 455              fs->super->s_lastcheck < fs->super->s_mtime))
 456                 request_fsck_afterwards(fs);
 457         if (fsck_requested)
 458                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 459                         direction > 0 ? "-b" : "-s", fs->device_name);
 460         else
 461                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 462                         direction > 0 ? "-b" : "-s", fs->device_name);
 463
 464         if (undo_file)
 465                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 466         if (direction > 0)
 467                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 468         else
 469                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 470 }
 471
 472 /* Rewrite extents */
 473 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
 474                                  struct ext2_inode *inode)
 475 {
 476         ext2_extent_handle_t    handle;
 477         struct ext2fs_extent    extent;
 478         errcode_t               errcode;
 479         struct ext2_extent_info info;
 480
 481         if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
 482             !ext2fs_has_feature_metadata_csum(fs->super))
 483                 return 0;
 484
 485         errcode = ext2fs_extent_open(fs, ino, &handle);
 486         if (errcode)
 487                 return errcode;
 488
 489         errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
 490         if (errcode)
 491                 goto out;
 492
 493         do {
 494                 errcode = ext2fs_extent_get_info(handle, &info);
 495                 if (errcode)
 496                         break;
 497
 498                 /*
 499                  * If this is the first extent in an extent block that we
 500                  * haven't visited, rewrite the extent to force the ETB
 501                  * checksum to be rewritten.
 502                  */
 503                 if (info.curr_entry == 1 && info.curr_level != 0 &&
 504                     !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
 505                         errcode = ext2fs_extent_replace(handle, 0, &extent);
 506                         if (errcode)
 507                                 break;
 508                 }
 509
 510                 /* Skip to the end of a block of leaf nodes */
 511                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 512                         errcode = ext2fs_extent_get(handle,
 513                                                     EXT2_EXTENT_LAST_SIB,
 514                                                     &extent);
 515                         if (errcode)
 516                                 break;
 517                 }
 518
 519                 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
 520         } while (errcode == 0);
 521
 522 out:
 523         /* Ok if we run off the end */
 524         if (errcode == EXT2_ET_EXTENT_NO_NEXT)
 525                 errcode = 0;
 526         ext2fs_extent_free(handle);
 527         return errcode;
 528 }
 529
 530 /*
 531  * Rewrite directory blocks with checksums
 532  */
 533 struct rewrite_dir_context {
 534         char *buf;
 535         errcode_t errcode;
 536         ext2_ino_t dir;
 537         int is_htree;
 538 };
 539
 540 static int rewrite_dir_block(ext2_filsys fs,
 541                              blk64_t    *blocknr,
 542                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 543                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 544                              int        ref_offset EXT2FS_ATTR((unused)),
 545                              void       *priv_data)
 546 {
 547         struct ext2_dx_countlimit *dcl = NULL;
 548         struct rewrite_dir_context *ctx = priv_data;
 549         int dcl_offset, changed = 0;
 550
 551         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 552                                               ctx->dir);
 553         if (ctx->errcode)
 554                 return BLOCK_ABORT;
 555
 556         /* if htree node... */
 557         if (ctx->is_htree)
 558                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 559                                          &dcl, &dcl_offset);
 560         if (dcl) {
 561                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 562                         /* Ensure limit is the max size */
 563                         int max_entries = (fs->blocksize - dcl_offset) /
 564                                           sizeof(struct ext2_dx_entry);
 565                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 566                                 changed = 1;
 567                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 568                         }
 569                 } else {
 570                         /* If htree block is full then rebuild the dir */
 571                         if (ext2fs_le16_to_cpu(dcl->count) ==
 572                             ext2fs_le16_to_cpu(dcl->limit)) {
 573                                 request_dir_fsck_afterwards(fs);
 574                                 return 0;
 575                         }
 576                         /*
 577                          * Ensure dcl->limit is small enough to leave room for
 578                          * the checksum tail.
 579                          */
 580                         int max_entries = (fs->blocksize - (dcl_offset +
 581                                                 sizeof(struct ext2_dx_tail))) /
 582                                           sizeof(struct ext2_dx_entry);
 583                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 584                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 585                         /* Always rewrite checksum */
 586                         changed = 1;
 587                 }
 588         } else {
 589                 unsigned int rec_len, name_size;
 590                 char *top = ctx->buf + fs->blocksize;
 591                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 592                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 593
 594                 /* Find last and penultimate dirent */
 595                 while ((char *)de < top) {
 596                         penultimate_de = last_de;
 597                         last_de = de;
 598                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 599                         if (!ctx->errcode && !rec_len)
 600                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 601                         if (ctx->errcode)
 602                                 return BLOCK_ABORT;
 603                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 604                 }
 605                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 606                 if (ctx->errcode)
 607                         return BLOCK_ABORT;
 608                 name_size = ext2fs_dirent_name_len(last_de);
 609
 610                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 611                         if (!penultimate_de)
 612                                 return 0;
 613                         if (last_de->inode ||
 614                             name_size ||
 615                             rec_len != sizeof(struct ext2_dir_entry_tail))
 616                                 return 0;
 617                         /*
 618                          * The last dirent is unused and the right length to
 619                          * have stored a checksum.  Erase it.
 620                          */
 621                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 622                                                           &rec_len);
 623                         if (!rec_len)
 624                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 625                         if (ctx->errcode)
 626                                 return BLOCK_ABORT;
 627                         ext2fs_set_rec_len(fs, rec_len +
 628                                         sizeof(struct ext2_dir_entry_tail),
 629                                         penultimate_de);
 630                         changed = 1;
 631                 } else {
 632                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 633                         struct ext2_dir_entry_tail *t;
 634
 635                         /*
 636                          * If the last dirent looks like the tail, just update
 637                          * the checksum.
 638                          */
 639                         if (!last_de->inode &&
 640                             rec_len == csum_size) {
 641                                 t = (struct ext2_dir_entry_tail *)last_de;
 642                                 t->det_reserved_name_len =
 643                                                 EXT2_DIR_NAME_LEN_CSUM;
 644                                 changed = 1;
 645                                 goto out;
 646                         }
 647                         if (name_size & 3)
 648                                 name_size = (name_size & ~3) + 4;
 649                         /* If there's not enough space for the tail, e2fsck */
 650                         if (rec_len <= (8 + name_size + csum_size)) {
 651                                 request_dir_fsck_afterwards(fs);
 652                                 return 0;
 653                         }
 654                         /* Shorten that last de and insert the tail */
 655                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 656                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 657                         ext2fs_initialize_dirent_tail(fs, t);
 658
 659                         /* Always update checksum */
 660                         changed = 1;
 661                 }
 662         }
 663
 664 out:
 665         if (!changed)
 666                 return 0;
 667
 668         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 669                                                0, ctx->dir);
 670         if (ctx->errcode)
 671                 return BLOCK_ABORT;
 672
 673         return 0;
 674 }
 675
 676 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 677                                    struct ext2_inode *inode)
 678 {
 679         errcode_t       retval;
 680         struct rewrite_dir_context ctx;
 681
 682         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 683         if (retval)
 684                 return retval;
 685
 686         ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
 687         ctx.dir = dir;
 688         ctx.errcode = 0;
 689         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 690                                                 BLOCK_FLAG_DATA_ONLY,
 691                                        0, rewrite_dir_block, &ctx);
 692
 693         ext2fs_free_mem(&ctx.buf);
 694         if (retval)
 695                 return retval;
 696
 697         return ctx.errcode;
 698 }
 699
 700 /*
 701  * Forcibly set checksums in all inodes.
 702  */
 703 static void rewrite_inodes(ext2_filsys fs)
 704 {
 705         int length = EXT2_INODE_SIZE(fs->super);
 706         struct ext2_inode *inode, *zero;
 707         char            *ea_buf;
 708         ext2_inode_scan scan;
 709         errcode_t       retval;
 710         ext2_ino_t      ino;
 711         blk64_t         file_acl_block;
 712         int             inode_dirty;
 713
 714         if (fs->super->s_creator_os != EXT2_OS_LINUX)
 715                 return;
 716
 717         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 718         if (retval) {
 719                 com_err("set_csum", retval, "while opening inode scan");
 720                 exit(1);
 721         }
 722
 723         retval = ext2fs_get_mem(length, &inode);
 724         if (retval) {
 725                 com_err("set_csum", retval, "while allocating memory");
 726                 exit(1);
 727         }
 728
 729         retval = ext2fs_get_memzero(length, &zero);
 730         if (retval) {
 731                 com_err("set_csum", retval, "while allocating memory");
 732                 exit(1);
 733         }
 734
 735         retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
 736         if (retval) {
 737                 com_err("set_csum", retval, "while allocating memory");
 738                 exit(1);
 739         }
 740
 741         do {
 742                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 743                 if (retval) {
 744                         com_err("set_csum", retval, "while getting next inode");
 745                         exit(1);
 746                 }
 747                 if (!ino)
 748                         break;
 749                 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 750                         inode_dirty = 1;
 751                 } else {
 752                         if (memcmp(inode, zero, length) != 0) {
 753                                 memset(inode, 0, length);
 754                                 inode_dirty = 1;
 755                         } else {
 756                                 inode_dirty = 0;
 757                         }
 758                 }
 759
 760                 if (inode_dirty) {
 761                         retval = ext2fs_write_inode_full(fs, ino, inode,
 762                                                          length);
 763                         if (retval) {
 764                                 com_err("set_csum", retval, "while writing "
 765                                         "inode");
 766                                 exit(1);
 767                         }
 768                 }
 769
 770                 retval = rewrite_extents(fs, ino, inode);
 771                 if (retval) {
 772                         com_err("rewrite_extents", retval,
 773                                 "while rewriting extents");
 774                         exit(1);
 775                 }
 776
 777                 if (LINUX_S_ISDIR(inode->i_mode) &&
 778                     ext2fs_inode_has_valid_blocks2(fs, inode)) {
 779                         retval = rewrite_directory(fs, ino, inode);
 780                         if (retval) {
 781                                 com_err("rewrite_directory", retval,
 782                                         "while rewriting directories");
 783                                 exit(1);
 784                         }
 785                 }
 786
 787                 file_acl_block = ext2fs_file_acl_block(fs, inode);
 788                 if (!file_acl_block)
 789                         continue;
 790                 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
 791                 if (retval) {
 792                         com_err("rewrite_eablock", retval,
 793                                 "while rewriting extended attribute");
 794                         exit(1);
 795                 }
 796                 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
 797                                                 ino);
 798                 if (retval) {
 799                         com_err("rewrite_eablock", retval,
 800                                 "while rewriting extended attribute");
 801                         exit(1);
 802                 }
 803         } while (ino);
 804
 805         ext2fs_free_mem(&zero);
 806         ext2fs_free_mem(&inode);
 807         ext2fs_free_mem(&ea_buf);
 808         ext2fs_close_inode_scan(scan);
 809 }
 810
 811 static void rewrite_metadata_checksums(ext2_filsys fs)
 812 {
 813         errcode_t retval;
 814         dgrp_t i;
 815
 816         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 817         ext2fs_init_csum_seed(fs);
 818         for (i = 0; i < fs->group_desc_count; i++)
 819                 ext2fs_group_desc_csum_set(fs, i);
 820         retval = ext2fs_read_bitmaps(fs);
 821         if (retval) {
 822                 com_err("rewrite_metadata_checksums", retval,
 823                         "while reading bitmaps");
 824                 exit(1);
 825         }
 826         rewrite_inodes(fs);
 827         ext2fs_mark_ib_dirty(fs);
 828         ext2fs_mark_bb_dirty(fs);
 829         ext2fs_mmp_update2(fs, 1);
 830         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 831         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 832         if (ext2fs_has_feature_metadata_csum(fs->super))
 833                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 834         else
 835                 fs->super->s_checksum_type = 0;
 836         ext2fs_mark_super_dirty(fs);
 837 }
 838
 839 static void enable_uninit_bg(ext2_filsys fs)
 840 {
 841         struct ext2_group_desc *gd;
 842         dgrp_t i;
 843
 844         for (i = 0; i < fs->group_desc_count; i++) {
 845                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 846                 gd->bg_itable_unused = 0;
 847                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 848                 ext2fs_group_desc_csum_set(fs, i);
 849         }
 850         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 851 }
 852
 853 static errcode_t zero_empty_inodes(ext2_filsys fs)
 854 {
 855         int length = EXT2_INODE_SIZE(fs->super);
 856         struct ext2_inode *inode = NULL;
 857         ext2_inode_scan scan;
 858         errcode_t       retval;
 859         ext2_ino_t      ino;
 860
 861         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 862         if (retval)
 863                 goto out;
 864
 865         retval = ext2fs_get_mem(length, &inode);
 866         if (retval)
 867                 goto out;
 868
 869         do {
 870                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 871                 if (retval)
 872                         goto out;
 873                 if (!ino)
 874                         break;
 875                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 876                         memset(inode, 0, length);
 877                         retval = ext2fs_write_inode_full(fs, ino, inode,
 878                                                          length);
 879                         if (retval)
 880                                 goto out;
 881                 }
 882         } while (1);
 883
 884 out:
 885         ext2fs_free_mem(&inode);
 886         ext2fs_close_inode_scan(scan);
 887         return retval;
 888 }
 889
 890 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
 891 {
 892         struct ext2_group_desc *gd;
 893         dgrp_t i;
 894         errcode_t retval;
 895         blk64_t b, c, d;
 896
 897         /* Load bitmaps to ensure that the uninit ones get written out */
 898         fs->super->s_feature_ro_compat |= csum_feature_flag;
 899         retval = ext2fs_read_bitmaps(fs);
 900         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
 901         if (retval) {
 902                 com_err("disable_uninit_bg", retval,
 903                         "while reading bitmaps");
 904                 request_fsck_afterwards(fs);
 905                 return retval;
 906         }
 907         ext2fs_mark_ib_dirty(fs);
 908         ext2fs_mark_bb_dirty(fs);
 909
 910         /* If we're only turning off uninit_bg, zero the inodes */
 911         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
 912                 retval = zero_empty_inodes(fs);
 913                 if (retval) {
 914                         com_err("disable_uninit_bg", retval,
 915                                 "while zeroing unused inodes");
 916                         request_fsck_afterwards(fs);
 917                         return retval;
 918                 }
 919         }
 920
 921         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
 922         for (i = 0; i < fs->group_desc_count; i++) {
 923                 b = ext2fs_block_bitmap_loc(fs, i);
 924                 ext2fs_mark_block_bitmap2(fs->block_map, b);
 925                 b = ext2fs_inode_bitmap_loc(fs, i);
 926                 ext2fs_mark_block_bitmap2(fs->block_map, b);
 927
 928                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
 929                 if (retval == 0 && b)
 930                         ext2fs_mark_block_bitmap2(fs->block_map, b);
 931                 if (retval == 0 && c)
 932                         ext2fs_mark_block_bitmap2(fs->block_map, c);
 933                 if (retval == 0 && d)
 934                         ext2fs_mark_block_bitmap2(fs->block_map, d);
 935                 if (retval) {
 936                         com_err("disable_uninit_bg", retval,
 937                                 "while initializing block bitmaps");
 938                         request_fsck_afterwards(fs);
 939                 }
 940
 941                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 942                 gd->bg_itable_unused = 0;
 943                 gd->bg_flags = 0;
 944                 ext2fs_group_desc_csum_set(fs, i);
 945         }
 946         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 947         ext2fs_mark_super_dirty(fs);
 948
 949         return 0;
 950 }
 951
 952 /*
 953  * Update the feature set as provided by the user.
 954  */
 955 static int update_feature_set(ext2_filsys fs, char *features)
 956 {
 957         struct ext2_super_block *sb = fs->super;
 958         __u32           old_features[3];
 959         int             type_err;
 960         unsigned int    mask_err;
 961         errcode_t       err;
 962         enum quota_type qtype;
 963
 964 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 965                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 966 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 967                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 968 #define FEATURE_CHANGED(type, mask) ((mask) & \
 969                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 970
 971         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 972         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 973         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 974
 975         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 976                               ok_features, clear_ok_features,
 977                               &type_err, &mask_err)) {
 978                 if (!mask_err)
 979                         fprintf(stderr,
 980                                 _("Invalid filesystem option set: %s\n"),
 981                                 features);
 982                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 983                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 984                                           "not supported.\n"),
 985                                 e2p_feature2string(type_err &
 986                                                    E2P_FEATURE_TYPE_MASK,
 987                                                    mask_err));
 988                 else
 989                         fprintf(stderr, _("Setting filesystem feature '%s' "
 990                                           "not supported.\n"),
 991                                 e2p_feature2string(type_err, mask_err));
 992                 return 1;
 993         }
 994
 995         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 996                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 997                     !(mount_flags & EXT2_MF_READONLY)) {
 998                         fputs(_("The has_journal feature may only be "
 999                                 "cleared when the filesystem is\n"
1000                                 "unmounted or mounted "
1001                                 "read-only.\n"), stderr);
1002                         return 1;
1003                 }
1004                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1005                     f_flag < 2) {
1006                         fputs(_("The needs_recovery flag is set.  "
1007                                 "Please run e2fsck before clearing\n"
1008                                 "the has_journal flag.\n"), stderr);
1009                         return 1;
1010                 }
1011                 if (sb->s_journal_inum) {
1012                         if (remove_journal_inode(fs))
1013                                 return 1;
1014                 }
1015                 if (sb->s_journal_dev) {
1016                         if (remove_journal_device(fs))
1017                                 return 1;
1018                 }
1019         }
1020
1021         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1022                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1023                 if (ext2fs_has_feature_meta_bg(sb)) {
1024                         fputs(_("Setting filesystem feature 'sparse_super' "
1025                                 "not supported\nfor filesystems with "
1026                                 "the meta_bg feature enabled.\n"),
1027                                 stderr);
1028                         return 1;
1029                 }
1030         }
1031
1032         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1033                 int error;
1034
1035                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1036                     (mount_flags & EXT2_MF_READONLY)) {
1037                         fputs(_("The multiple mount protection feature can't\n"
1038                                 "be set if the filesystem is mounted or\n"
1039                                 "read-only.\n"), stderr);
1040                         return 1;
1041                 }
1042
1043                 error = ext2fs_mmp_init(fs);
1044                 if (error) {
1045                         fputs(_("\nError while enabling multiple mount "
1046                                 "protection feature."), stderr);
1047                         return 1;
1048                 }
1049
1050                 /*
1051                  * We want to update group desc with the new free blocks count
1052                  */
1053                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1054
1055                 printf(_("Multiple mount protection has been enabled "
1056                          "with update interval %ds.\n"),
1057                        sb->s_mmp_update_interval);
1058         }
1059
1060         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1061                 int error;
1062
1063                 if (mount_flags & EXT2_MF_READONLY) {
1064                         fputs(_("The multiple mount protection feature cannot\n"
1065                                 "be disabled if the filesystem is readonly.\n"),
1066                                 stderr);
1067                         return 1;
1068                 }
1069
1070                 error = ext2fs_read_bitmaps(fs);
1071                 if (error) {
1072                         fputs(_("Error while reading bitmaps\n"), stderr);
1073                         return 1;
1074                 }
1075
1076                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1077                 if (error) {
1078                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1079
1080                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1081                                 printf(_("Magic number in MMP block does not "
1082                                          "match. expected: %x, actual: %x\n"),
1083                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1084                         else
1085                                 com_err(program_name, error, "%s",
1086                                         _("while reading MMP block."));
1087                         goto mmp_error;
1088                 }
1089
1090                 /* We need to force out the group descriptors as well */
1091                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1092                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1093 mmp_error:
1094                 sb->s_mmp_block = 0;
1095                 sb->s_mmp_update_interval = 0;
1096         }
1097
1098         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1099                 /*
1100                  * If adding a journal flag, let the create journal
1101                  * code below handle setting the flag and creating the
1102                  * journal.  We supply a default size if necessary.
1103                  */
1104                 if (!journal_size)
1105                         journal_size = -1;
1106                 ext2fs_clear_feature_journal(sb);
1107         }
1108
1109         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1110                 if (!sb->s_def_hash_version)
1111                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1112                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1113                         uuid_generate((unsigned char *) sb->s_hash_seed);
1114         }
1115
1116         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1117                 if (ext2fs_check_desc(fs)) {
1118                         fputs(_("Clearing the flex_bg flag would "
1119                                 "cause the the filesystem to be\n"
1120                                 "inconsistent.\n"), stderr);
1121                         return 1;
1122                 }
1123         }
1124
1125         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1126                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1127                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1128                     !(mount_flags & EXT2_MF_READONLY)) {
1129                         fputs(_("The huge_file feature may only be "
1130                                 "cleared when the filesystem is\n"
1131                                 "unmounted or mounted "
1132                                 "read-only.\n"), stderr);
1133                         return 1;
1134                 }
1135         }
1136
1137         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1138                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1139                 if (check_fsck_needed(fs))
1140                         exit(1);
1141                 if (mount_flags & EXT2_MF_MOUNTED) {
1142                         fputs(_("Cannot enable metadata_csum on a mounted "
1143                                 "filesystem!\n"), stderr);
1144                         exit(1);
1145                 }
1146                 if (!ext2fs_has_feature_extents(fs->super))
1147                         printf("%s",
1148                                _("Extents are not enabled.  The file extent "
1149                                  "tree can be checksummed, whereas block maps "
1150                                  "cannot.  Not enabling extents reduces the "
1151                                  "coverage of metadata checksumming.  "
1152                                  "Re-run with -O extent to rectify.\n"));
1153                 if (!ext2fs_has_feature_64bit(fs->super))
1154                         printf("%s",
1155                                _("64-bit filesystem support is not enabled.  "
1156                                  "The larger fields afforded by this feature "
1157                                  "enable full-strength checksumming.  "
1158                                  "Run resize2fs -b to rectify.\n"));
1159                 rewrite_checksums = 1;
1160                 /* metadata_csum supersedes uninit_bg */
1161                 ext2fs_clear_feature_gdt_csum(fs->super);
1162
1163                 /* if uninit_bg was previously off, rewrite group desc */
1164                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1165                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1166                         enable_uninit_bg(fs);
1167
1168                 /*
1169                  * Since metadata_csum supersedes uninit_bg, pretend like
1170                  * uninit_bg has been off all along.
1171                  */
1172                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1173                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1174         }
1175
1176         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1177                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1178                 __u32   test_features[3];
1179
1180                 if (check_fsck_needed(fs))
1181                         exit(1);
1182                 if (mount_flags & EXT2_MF_MOUNTED) {
1183                         fputs(_("Cannot disable metadata_csum on a mounted "
1184                                 "filesystem!\n"), stderr);
1185                         exit(1);
1186                 }
1187                 rewrite_checksums = 1;
1188
1189                 /* Enable uninit_bg unless the user expressly turned it off */
1190                 memcpy(test_features, old_features, sizeof(test_features));
1191                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1192                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1193                 e2p_edit_feature2(features, test_features, ok_features,
1194                                   clear_ok_features, NULL, NULL);
1195                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1196                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1197                         ext2fs_set_feature_gdt_csum(fs->super);
1198
1199                 /*
1200                  * If we're turning off metadata_csum and not turning on
1201                  * uninit_bg, rewrite group desc.
1202                  */
1203                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1204                         err = disable_uninit_bg(fs,
1205                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1206                         if (err)
1207                                 return 1;
1208                 } else
1209                         /*
1210                          * metadata_csum previously provided uninit_bg, so if
1211                          * we're also setting the uninit_bg feature bit,
1212                          * pretend like it was previously enabled.  Checksums
1213                          * will be rewritten with crc16 later.
1214                          */
1215                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1216                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1217         }
1218
1219         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1220                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1221                 /* Do not enable uninit_bg when metadata_csum enabled */
1222                 if (ext2fs_has_feature_metadata_csum(fs->super))
1223                         ext2fs_clear_feature_gdt_csum(fs->super);
1224                 else
1225                         enable_uninit_bg(fs);
1226         }
1227
1228         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1229                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1230                 err = disable_uninit_bg(fs,
1231                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1232                 if (err)
1233                         return 1;
1234         }
1235
1236         /*
1237          * We don't actually toggle 64bit; resize2fs does that.  But this
1238          * must come after the metadata_csum feature_on so that it won't
1239          * complain about the lack of 64bit.
1240          */
1241         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1242                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1243                 if (mount_flags & EXT2_MF_MOUNTED) {
1244                         fprintf(stderr, _("Cannot enable 64-bit mode "
1245                                           "while mounted!\n"));
1246                         exit(1);
1247                 }
1248                 ext2fs_clear_feature_64bit(sb);
1249                 feature_64bit = 1;
1250         }
1251         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1252                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1253                 if (mount_flags & EXT2_MF_MOUNTED) {
1254                         fprintf(stderr, _("Cannot disable 64-bit mode "
1255                                           "while mounted!\n"));
1256                         exit(1);
1257                 }
1258                 ext2fs_set_feature_64bit(sb);
1259                 feature_64bit = -1;
1260         }
1261
1262         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1263                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1264                 /*
1265                  * Set the Q_flag here and handle the quota options in the code
1266                  * below.
1267                  */
1268                 if (!Q_flag) {
1269                         Q_flag = 1;
1270                         /* Enable all quota by default */
1271                         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1272                                 quota_enable[qtype] = QOPT_ENABLE;
1273                 }
1274                 ext2fs_clear_feature_quota(sb);
1275         }
1276
1277         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1278                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1279                 /*
1280                  * Set the Q_flag here and handle the quota options in the code
1281                  * below.
1282                  */
1283                 if (Q_flag)
1284                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1285                                 "arguments.\n"), stderr);
1286                 Q_flag = 1;
1287                 /* Disable all quota by default */
1288                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1289                         quota_enable[qtype] = QOPT_DISABLE;
1290         }
1291
1292         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1293                 fs->super->s_encrypt_algos[0] =
1294                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1295                 fs->super->s_encrypt_algos[1] =
1296                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1297         }
1298
1299         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1300             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1301              sb->s_feature_incompat))
1302                 ext2fs_update_dynamic_rev(fs);
1303
1304         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1305                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1306             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1307                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1308             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1309                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1310             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1311                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1312             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1313                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1314                 request_fsck_afterwards(fs);
1315
1316         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1317             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1318             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1319                 ext2fs_mark_super_dirty(fs);
1320
1321         return 0;
1322 }
1323
1324 /*
1325  * Add a journal to the filesystem.
1326  */
1327 static int add_journal(ext2_filsys fs)
1328 {
1329         unsigned long journal_blocks;
1330         errcode_t       retval;
1331         ext2_filsys     jfs;
1332         io_manager      io_ptr;
1333
1334         if (ext2fs_has_feature_journal(fs->super)) {
1335                 fputs(_("The filesystem already has a journal.\n"), stderr);
1336                 goto err;
1337         }
1338         if (journal_device) {
1339                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1340                                         NULL))
1341                         proceed_question(-1);
1342                 check_mount(journal_device, 0, _("journal"));
1343 #ifdef CONFIG_TESTIO_DEBUG
1344                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1345                         io_ptr = test_io_manager;
1346                         test_io_backing_manager = unix_io_manager;
1347                 } else
1348 #endif
1349                         io_ptr = unix_io_manager;
1350                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1351                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1352                                      fs->blocksize, io_ptr, &jfs);
1353                 if (retval) {
1354                         com_err(program_name, retval,
1355                                 _("\n\twhile trying to open journal on %s\n"),
1356                                 journal_device);
1357                         goto err;
1358                 }
1359                 printf(_("Creating journal on device %s: "),
1360                        journal_device);
1361                 fflush(stdout);
1362
1363                 retval = ext2fs_add_journal_device(fs, jfs);
1364                 ext2fs_close_free(&jfs);
1365                 if (retval) {
1366                         com_err(program_name, retval,
1367                                 _("while adding filesystem to journal on %s"),
1368                                 journal_device);
1369                         goto err;
1370                 }
1371                 fputs(_("done\n"), stdout);
1372         } else if (journal_size) {
1373                 fputs(_("Creating journal inode: "), stdout);
1374                 fflush(stdout);
1375                 journal_blocks = figure_journal_size(journal_size, fs);
1376
1377                 if (journal_location_string)
1378                         journal_location =
1379                                 parse_num_blocks2(journal_location_string,
1380                                                   fs->super->s_log_block_size);
1381                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1382                                                    journal_location,
1383                                                    journal_flags);
1384                 if (retval) {
1385                         fprintf(stderr, "\n");
1386                         com_err(program_name, retval, "%s",
1387                                 _("\n\twhile trying to create journal file"));
1388                         return retval;
1389                 } else
1390                         fputs(_("done\n"), stdout);
1391                 /*
1392                  * If the filesystem wasn't mounted, we need to force
1393                  * the block group descriptors out.
1394                  */
1395                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1396                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1397         }
1398         print_check_message(fs->super->s_max_mnt_count,
1399                             fs->super->s_checkinterval);
1400         return 0;
1401
1402 err:
1403         free(journal_device);
1404         return 1;
1405 }
1406
1407 static void handle_quota_options(ext2_filsys fs)
1408 {
1409         quota_ctx_t qctx;
1410         ext2_ino_t qf_ino;
1411         enum quota_type qtype;
1412         int enable = 0;
1413
1414         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1415                 if (quota_enable[qtype] != 0)
1416                         break;
1417         if (qtype == MAXQUOTAS)
1418                 /* Nothing to do. */
1419                 return;
1420
1421         quota_init_context(&qctx, fs, QUOTA_ALL_BIT);
1422         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1423                 if (quota_enable[qtype] == QOPT_ENABLE) {
1424                         enable = 1;
1425                         break;
1426                 }
1427         }
1428         if (enable)
1429                 quota_compute_usage(qctx);
1430
1431         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1432                 if (quota_enable[qtype] == QOPT_ENABLE &&
1433                     *quota_sb_inump(fs->super, qtype) == 0) {
1434                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0)
1435                                 quota_update_limits(qctx, qf_ino, qtype);
1436                         quota_write_inode(qctx, 1 << qtype);
1437                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1438                         quota_remove_inode(fs, qtype);
1439                 }
1440         }
1441
1442         quota_release_context(&qctx);
1443
1444         if (enable) {
1445                 ext2fs_set_feature_quota(fs->super);
1446                 ext2fs_mark_super_dirty(fs);
1447         } else {
1448                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1449                         if (*quota_sb_inump(fs->super, qtype) != 0)
1450                                 break;
1451                 if (qtype == MAXQUOTAS) {
1452                         fs->super->s_feature_ro_compat &=
1453                                         ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1454                         ext2fs_mark_super_dirty(fs);
1455                 }
1456         }
1457
1458         return;
1459 }
1460
1461 static int option_handle_function(char *token, void *data)
1462 {
1463         if (strncmp(token, "usr", 3) == 0) {
1464                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1465         } else if (strncmp(token, "^usr", 4) == 0) {
1466                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1467         } else if (strncmp(token, "grp", 3) == 0) {
1468                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1469         } else if (strncmp(token, "^grp", 4) == 0) {
1470                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1471         } else {
1472                 fputs(_("\nBad quota options specified.\n\n"
1473                         "Following valid quota options are available "
1474                         "(pass by separating with comma):\n"
1475                         "\t[^]usr[quota]\n"
1476                         "\t[^]grp[quota]\n"
1477                         "\n\n"), stderr);
1478                 return 1;
1479         }
1480         return 0;
1481 }
1482
1483 static void parse_e2label_options(int argc, char ** argv)
1484 {
1485         if ((argc < 2) || (argc > 3)) {
1486                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1487                 exit(1);
1488         }
1489         io_options = strchr(argv[1], '?');
1490         if (io_options)
1491                 *io_options++ = 0;
1492         device_name = blkid_get_devname(NULL, argv[1], NULL);
1493         if (!device_name) {
1494                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1495                         argv[1]);
1496                 exit(1);
1497         }
1498         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1499         if (argc == 3) {
1500                 open_flag |= EXT2_FLAG_RW;
1501                 L_flag = 1;
1502                 new_label = argv[2];
1503         } else
1504                 print_label++;
1505 }
1506
1507 static time_t parse_time(char *str)
1508 {
1509         struct  tm      ts;
1510
1511         if (strcmp(str, "now") == 0) {
1512                 return (time(0));
1513         }
1514         memset(&ts, 0, sizeof(ts));
1515 #ifdef HAVE_STRPTIME
1516         strptime(str, "%Y%m%d%H%M%S", &ts);
1517 #else
1518         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1519                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1520         ts.tm_year -= 1900;
1521         ts.tm_mon -= 1;
1522         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1523             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1524             ts.tm_min > 59 || ts.tm_sec > 61)
1525                 ts.tm_mday = 0;
1526 #endif
1527         if (ts.tm_mday == 0) {
1528                 com_err(program_name, 0,
1529                         _("Couldn't parse date/time specifier: %s"),
1530                         str);
1531                 usage();
1532         }
1533         ts.tm_isdst = -1;
1534         return (mktime(&ts));
1535 }
1536
1537 static void parse_tune2fs_options(int argc, char **argv)
1538 {
1539         int c;
1540         char *tmp;
1541         struct group *gr;
1542         struct passwd *pw;
1543         int ret;
1544         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1545
1546         open_flag = 0;
1547         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1548         while ((c = getopt(argc, argv, optstring)) != EOF)
1549                 switch (c) {
1550                 case 'c':
1551                         max_mount_count = strtol(optarg, &tmp, 0);
1552                         if (*tmp || max_mount_count > 16000) {
1553                                 com_err(program_name, 0,
1554                                         _("bad mounts count - %s"),
1555                                         optarg);
1556                                 usage();
1557                         }
1558                         if (max_mount_count == 0)
1559                                 max_mount_count = -1;
1560                         c_flag = 1;
1561                         open_flag = EXT2_FLAG_RW;
1562                         break;
1563                 case 'C':
1564                         mount_count = strtoul(optarg, &tmp, 0);
1565                         if (*tmp || mount_count > 16000) {
1566                                 com_err(program_name, 0,
1567                                         _("bad mounts count - %s"),
1568                                         optarg);
1569                                 usage();
1570                         }
1571                         C_flag = 1;
1572                         open_flag = EXT2_FLAG_RW;
1573                         break;
1574                 case 'e':
1575                         if (strcmp(optarg, "continue") == 0)
1576                                 errors = EXT2_ERRORS_CONTINUE;
1577                         else if (strcmp(optarg, "remount-ro") == 0)
1578                                 errors = EXT2_ERRORS_RO;
1579                         else if (strcmp(optarg, "panic") == 0)
1580                                 errors = EXT2_ERRORS_PANIC;
1581                         else {
1582                                 com_err(program_name, 0,
1583                                         _("bad error behavior - %s"),
1584                                         optarg);
1585                                 usage();
1586                         }
1587                         e_flag = 1;
1588                         open_flag = EXT2_FLAG_RW;
1589                         break;
1590                 case 'E':
1591                         extended_cmd = optarg;
1592                         open_flag |= EXT2_FLAG_RW;
1593                         break;
1594                 case 'f': /* Force */
1595                         f_flag++;
1596                         break;
1597                 case 'g':
1598                         resgid = strtoul(optarg, &tmp, 0);
1599                         if (*tmp) {
1600                                 gr = getgrnam(optarg);
1601                                 if (gr == NULL)
1602                                         tmp = optarg;
1603                                 else {
1604                                         resgid = gr->gr_gid;
1605                                         *tmp = 0;
1606                                 }
1607                         }
1608                         if (*tmp) {
1609                                 com_err(program_name, 0,
1610                                         _("bad gid/group name - %s"),
1611                                         optarg);
1612                                 usage();
1613                         }
1614                         g_flag = 1;
1615                         open_flag = EXT2_FLAG_RW;
1616                         break;
1617                 case 'i':
1618                         interval = strtoul(optarg, &tmp, 0);
1619                         switch (*tmp) {
1620                         case 's':
1621                                 tmp++;
1622                                 break;
1623                         case '\0':
1624                         case 'd':
1625                         case 'D': /* days */
1626                                 interval *= 86400;
1627                                 if (*tmp != '\0')
1628                                         tmp++;
1629                                 break;
1630                         case 'm':
1631                         case 'M': /* months! */
1632                                 interval *= 86400 * 30;
1633                                 tmp++;
1634                                 break;
1635                         case 'w':
1636                         case 'W': /* weeks */
1637                                 interval *= 86400 * 7;
1638                                 tmp++;
1639                                 break;
1640                         }
1641                         if (*tmp) {
1642                                 com_err(program_name, 0,
1643                                         _("bad interval - %s"), optarg);
1644                                 usage();
1645                         }
1646                         i_flag = 1;
1647                         open_flag = EXT2_FLAG_RW;
1648                         break;
1649                 case 'j':
1650                         if (!journal_size)
1651                                 journal_size = -1;
1652                         open_flag = EXT2_FLAG_RW;
1653                         break;
1654                 case 'J':
1655                         parse_journal_opts(optarg);
1656                         open_flag = EXT2_FLAG_RW;
1657                         break;
1658                 case 'l':
1659                         l_flag = 1;
1660                         break;
1661                 case 'L':
1662                         new_label = optarg;
1663                         L_flag = 1;
1664                         open_flag |= EXT2_FLAG_RW |
1665                                 EXT2_FLAG_JOURNAL_DEV_OK;
1666                         break;
1667                 case 'm':
1668                         reserved_ratio = strtod(optarg, &tmp);
1669                         if (*tmp || reserved_ratio > 50 ||
1670                             reserved_ratio < 0) {
1671                                 com_err(program_name, 0,
1672                                         _("bad reserved block ratio - %s"),
1673                                         optarg);
1674                                 usage();
1675                         }
1676                         m_flag = 1;
1677                         open_flag = EXT2_FLAG_RW;
1678                         break;
1679                 case 'M':
1680                         new_last_mounted = optarg;
1681                         M_flag = 1;
1682                         open_flag = EXT2_FLAG_RW;
1683                         break;
1684                 case 'o':
1685                         if (mntopts_cmd) {
1686                                 com_err(program_name, 0, "%s",
1687                                         _("-o may only be specified once"));
1688                                 usage();
1689                         }
1690                         mntopts_cmd = optarg;
1691                         open_flag = EXT2_FLAG_RW;
1692                         break;
1693                 case 'O':
1694                         if (features_cmd) {
1695                                 com_err(program_name, 0, "%s",
1696                                         _("-O may only be specified once"));
1697                                 usage();
1698                         }
1699                         features_cmd = optarg;
1700                         open_flag = EXT2_FLAG_RW;
1701                         break;
1702                 case 'Q':
1703                         Q_flag = 1;
1704                         ret = parse_quota_opts(optarg, option_handle_function,
1705                                                NULL);
1706                         if (ret)
1707                                 exit(1);
1708                         open_flag = EXT2_FLAG_RW;
1709                         break;
1710                 case 'r':
1711                         reserved_blocks = strtoul(optarg, &tmp, 0);
1712                         if (*tmp) {
1713                                 com_err(program_name, 0,
1714                                         _("bad reserved blocks count - %s"),
1715                                         optarg);
1716                                 usage();
1717                         }
1718                         r_flag = 1;
1719                         open_flag = EXT2_FLAG_RW;
1720                         break;
1721                 case 's': /* Deprecated */
1722                         s_flag = atoi(optarg);
1723                         open_flag = EXT2_FLAG_RW;
1724                         break;
1725                 case 'T':
1726                         T_flag = 1;
1727                         last_check_time = parse_time(optarg);
1728                         open_flag = EXT2_FLAG_RW;
1729                         break;
1730                 case 'u':
1731                                 resuid = strtoul(optarg, &tmp, 0);
1732                                 if (*tmp) {
1733                                         pw = getpwnam(optarg);
1734                                         if (pw == NULL)
1735                                                 tmp = optarg;
1736                                         else {
1737                                                 resuid = pw->pw_uid;
1738                                                 *tmp = 0;
1739                                         }
1740                                 }
1741                                 if (*tmp) {
1742                                         com_err(program_name, 0,
1743                                                 _("bad uid/user name - %s"),
1744                                                 optarg);
1745                                         usage();
1746                                 }
1747                                 u_flag = 1;
1748                                 open_flag = EXT2_FLAG_RW;
1749                                 break;
1750                 case 'U':
1751                         new_UUID = optarg;
1752                         U_flag = 1;
1753                         open_flag = EXT2_FLAG_RW |
1754                                 EXT2_FLAG_JOURNAL_DEV_OK;
1755                         break;
1756                 case 'I':
1757                         new_inode_size = strtoul(optarg, &tmp, 0);
1758                         if (*tmp) {
1759                                 com_err(program_name, 0,
1760                                         _("bad inode size - %s"),
1761                                         optarg);
1762                                 usage();
1763                         }
1764                         if (!((new_inode_size &
1765                                (new_inode_size - 1)) == 0)) {
1766                                 com_err(program_name, 0,
1767                                         _("Inode size must be a "
1768                                           "power of two- %s"),
1769                                         optarg);
1770                                 usage();
1771                         }
1772                         open_flag = EXT2_FLAG_RW;
1773                         I_flag = 1;
1774                         break;
1775                 case 'z':
1776                         undo_file = optarg;
1777                         break;
1778                 default:
1779                         usage();
1780                 }
1781         if (optind < argc - 1 || optind == argc)
1782                 usage();
1783         if (!open_flag && !l_flag)
1784                 usage();
1785         io_options = strchr(argv[optind], '?');
1786         if (io_options)
1787                 *io_options++ = 0;
1788         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1789         if (!device_name) {
1790                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1791                         argv[optind]);
1792                 exit(1);
1793         }
1794 }
1795
1796 #ifdef CONFIG_BUILD_FINDFS
1797 void do_findfs(int argc, char **argv)
1798 {
1799         char    *dev;
1800
1801         if ((argc != 2) ||
1802             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1803                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1804                 exit(2);
1805         }
1806         dev = blkid_get_devname(NULL, argv[1], NULL);
1807         if (!dev) {
1808                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1809                         argv[1]);
1810                 exit(1);
1811         }
1812         puts(dev);
1813         exit(0);
1814 }
1815 #endif
1816
1817 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1818 {
1819         char    *buf, *token, *next, *p, *arg;
1820         int     len, hash_alg;
1821         int     r_usage = 0;
1822
1823         len = strlen(opts);
1824         buf = malloc(len+1);
1825         if (!buf) {
1826                 fprintf(stderr, "%s",
1827                         _("Couldn't allocate memory to parse options!\n"));
1828                 return 1;
1829         }
1830         strcpy(buf, opts);
1831         for (token = buf; token && *token; token = next) {
1832                 p = strchr(token, ',');
1833                 next = 0;
1834                 if (p) {
1835                         *p = 0;
1836                         next = p+1;
1837                 }
1838                 arg = strchr(token, '=');
1839                 if (arg) {
1840                         *arg = 0;
1841                         arg++;
1842                 }
1843                 if (strcmp(token, "clear-mmp") == 0 ||
1844                     strcmp(token, "clear_mmp") == 0) {
1845                         clear_mmp = 1;
1846                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1847                         unsigned long intv;
1848                         if (!arg) {
1849                                 r_usage++;
1850                                 continue;
1851                         }
1852                         intv = strtoul(arg, &p, 0);
1853                         if (*p) {
1854                                 fprintf(stderr,
1855                                         _("Invalid mmp_update_interval: %s\n"),
1856                                         arg);
1857                                 r_usage++;
1858                                 continue;
1859                         }
1860                         if (intv == 0) {
1861                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1862                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1863                                 fprintf(stderr,
1864                                         _("mmp_update_interval too big: %lu\n"),
1865                                         intv);
1866                                 r_usage++;
1867                                 continue;
1868                         }
1869                         printf(P_("Setting multiple mount protection update "
1870                                   "interval to %lu second\n",
1871                                   "Setting multiple mount protection update "
1872                                   "interval to %lu seconds\n", intv),
1873                                intv);
1874                         fs->super->s_mmp_update_interval = intv;
1875                         ext2fs_mark_super_dirty(fs);
1876                 } else if (!strcmp(token, "test_fs")) {
1877                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1878                         printf("Setting test filesystem flag\n");
1879                         ext2fs_mark_super_dirty(fs);
1880                 } else if (!strcmp(token, "^test_fs")) {
1881                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1882                         printf("Clearing test filesystem flag\n");
1883                         ext2fs_mark_super_dirty(fs);
1884                 } else if (strcmp(token, "stride") == 0) {
1885                         if (!arg) {
1886                                 r_usage++;
1887                                 continue;
1888                         }
1889                         stride = strtoul(arg, &p, 0);
1890                         if (*p) {
1891                                 fprintf(stderr,
1892                                         _("Invalid RAID stride: %s\n"),
1893                                         arg);
1894                                 r_usage++;
1895                                 continue;
1896                         }
1897                         stride_set = 1;
1898                 } else if (strcmp(token, "stripe-width") == 0 ||
1899                            strcmp(token, "stripe_width") == 0) {
1900                         if (!arg) {
1901                                 r_usage++;
1902                                 continue;
1903                         }
1904                         stripe_width = strtoul(arg, &p, 0);
1905                         if (*p) {
1906                                 fprintf(stderr,
1907                                         _("Invalid RAID stripe-width: %s\n"),
1908                                         arg);
1909                                 r_usage++;
1910                                 continue;
1911                         }
1912                         stripe_width_set = 1;
1913                 } else if (strcmp(token, "hash_alg") == 0 ||
1914                            strcmp(token, "hash-alg") == 0) {
1915                         if (!arg) {
1916                                 r_usage++;
1917                                 continue;
1918                         }
1919                         hash_alg = e2p_string2hash(arg);
1920                         if (hash_alg < 0) {
1921                                 fprintf(stderr,
1922                                         _("Invalid hash algorithm: %s\n"),
1923                                         arg);
1924                                 r_usage++;
1925                                 continue;
1926                         }
1927                         fs->super->s_def_hash_version = hash_alg;
1928                         printf(_("Setting default hash algorithm "
1929                                  "to %s (%d)\n"),
1930                                arg, hash_alg);
1931                         ext2fs_mark_super_dirty(fs);
1932                 } else if (!strcmp(token, "mount_opts")) {
1933                         if (!arg) {
1934                                 r_usage++;
1935                                 continue;
1936                         }
1937                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1938                                 fprintf(stderr,
1939                                         "Extended mount options too long\n");
1940                                 continue;
1941                         }
1942                         ext_mount_opts = strdup(arg);
1943                 } else
1944                         r_usage++;
1945         }
1946         if (r_usage) {
1947                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1948                         "Extended options are separated by commas, "
1949                         "and may take an argument which\n"
1950                         "\tis set off by an equals ('=') sign.\n\n"
1951                         "Valid extended options are:\n"
1952                         "\tclear_mmp\n"
1953                         "\thash_alg=<hash algorithm>\n"
1954                         "\tmount_opts=<extended default mount options>\n"
1955                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1956                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1957                         "\ttest_fs\n"
1958                         "\t^test_fs\n"));
1959                 free(buf);
1960                 return 1;
1961         }
1962         free(buf);
1963
1964         return 0;
1965 }
1966
1967 /*
1968  * Fill in the block bitmap bmap with the information regarding the
1969  * blocks to be moved
1970  */
1971 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1972                             ext2fs_block_bitmap bmap)
1973 {
1974         dgrp_t i;
1975         int retval;
1976         ext2_badblocks_list bb_list = 0;
1977         blk64_t j, needed_blocks = 0;
1978         blk64_t start_blk, end_blk;
1979
1980         retval = ext2fs_read_bb_inode(fs, &bb_list);
1981         if (retval)
1982                 return retval;
1983
1984         for (i = 0; i < fs->group_desc_count; i++) {
1985                 start_blk = ext2fs_inode_table_loc(fs, i) +
1986                                         fs->inode_blocks_per_group;
1987
1988                 end_blk = ext2fs_inode_table_loc(fs, i) +
1989                                         new_ino_blks_per_grp;
1990
1991                 for (j = start_blk; j < end_blk; j++) {
1992                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1993                                 /*
1994                                  * IF the block is a bad block we fail
1995                                  */
1996                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1997                                         ext2fs_badblocks_list_free(bb_list);
1998                                         return ENOSPC;
1999                                 }
2000
2001                                 ext2fs_mark_block_bitmap2(bmap, j);
2002                         } else {
2003                                 /*
2004                                  * We are going to use this block for
2005                                  * inode table. So mark them used.
2006                                  */
2007                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2008                         }
2009                 }
2010                 needed_blocks += end_blk - start_blk;
2011         }
2012
2013         ext2fs_badblocks_list_free(bb_list);
2014         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2015                 return ENOSPC;
2016
2017         return 0;
2018 }
2019
2020 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2021 {
2022         dgrp_t group;
2023         group = ext2fs_group_of_blk2(fs, blk);
2024         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2025                 return 1;
2026         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2027                 return 1;
2028         return 0;
2029 }
2030
2031 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2032 {
2033         blk64_t start_blk, end_blk;
2034         start_blk = fs->super->s_first_data_block +
2035                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2036         /*
2037          * We cannot get new block beyond end_blk for for the last block group
2038          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2039          */
2040         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2041         if (blk >= start_blk && blk <= end_blk)
2042                 return 1;
2043         return 0;
2044 }
2045
2046 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2047 {
2048
2049         char *buf;
2050         dgrp_t group = 0;
2051         errcode_t retval;
2052         int meta_data = 0;
2053         blk64_t blk, new_blk, goal;
2054         struct blk_move *bmv;
2055
2056         retval = ext2fs_get_mem(fs->blocksize, &buf);
2057         if (retval)
2058                 return retval;
2059
2060         for (new_blk = blk = fs->super->s_first_data_block;
2061              blk < ext2fs_blocks_count(fs->super); blk++) {
2062                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2063                         continue;
2064
2065                 if (ext2fs_is_meta_block(fs, blk)) {
2066                         /*
2067                          * If the block is mapping a fs meta data block
2068                          * like group desc/block bitmap/inode bitmap. We
2069                          * should find a block in the same group and fix
2070                          * the respective fs metadata pointers. Otherwise
2071                          * fail
2072                          */
2073                         group = ext2fs_group_of_blk2(fs, blk);
2074                         goal = ext2fs_group_first_block2(fs, group);
2075                         meta_data = 1;
2076
2077                 } else {
2078                         goal = new_blk;
2079                 }
2080                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2081                 if (retval)
2082                         goto err_out;
2083
2084                 /* new fs meta data block should be in the same group */
2085                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2086                         retval = ENOSPC;
2087                         goto err_out;
2088                 }
2089
2090                 /* Mark this block as allocated */
2091                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2092
2093                 /* Add it to block move list */
2094                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2095                 if (retval)
2096                         goto err_out;
2097
2098                 bmv->old_loc = blk;
2099                 bmv->new_loc = new_blk;
2100
2101                 list_add(&(bmv->list), &blk_move_list);
2102
2103                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2104                 if (retval)
2105                         goto err_out;
2106
2107                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2108                 if (retval)
2109                         goto err_out;
2110         }
2111
2112 err_out:
2113         ext2fs_free_mem(&buf);
2114         return retval;
2115 }
2116
2117 static blk64_t translate_block(blk64_t blk)
2118 {
2119         struct list_head *entry;
2120         struct blk_move *bmv;
2121
2122         list_for_each(entry, &blk_move_list) {
2123                 bmv = list_entry(entry, struct blk_move, list);
2124                 if (bmv->old_loc == blk)
2125                         return bmv->new_loc;
2126         }
2127
2128         return 0;
2129 }
2130
2131 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2132                          blk64_t *block_nr,
2133                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2134                          blk64_t ref_block EXT2FS_ATTR((unused)),
2135                          int ref_offset EXT2FS_ATTR((unused)),
2136                          void *priv_data)
2137 {
2138         int ret = 0;
2139         blk64_t new_blk;
2140         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2141
2142         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2143                 return 0;
2144         new_blk = translate_block(*block_nr);
2145         if (new_blk) {
2146                 *block_nr = new_blk;
2147                 /*
2148                  * This will force the ext2fs_write_inode in the iterator
2149                  */
2150                 ret |= BLOCK_CHANGED;
2151         }
2152
2153         return ret;
2154 }
2155
2156 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2157 {
2158         errcode_t retval = 0;
2159         ext2_ino_t ino;
2160         blk64_t blk;
2161         char *block_buf = 0;
2162         struct ext2_inode inode;
2163         ext2_inode_scan scan = NULL;
2164
2165         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2166         if (retval)
2167                 return retval;
2168
2169         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2170         if (retval)
2171                 goto err_out;
2172
2173         while (1) {
2174                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2175                 if (retval)
2176                         goto err_out;
2177
2178                 if (!ino)
2179                         break;
2180
2181                 if (inode.i_links_count == 0)
2182                         continue; /* inode not in use */
2183
2184                 /* FIXME!!
2185                  * If we end up modifying the journal inode
2186                  * the sb->s_jnl_blocks will differ. But a
2187                  * subsequent e2fsck fixes that.
2188                  * Do we need to fix this ??
2189                  */
2190
2191                 if (ext2fs_file_acl_block(fs, &inode) &&
2192                     ext2fs_test_block_bitmap2(bmap,
2193                                         ext2fs_file_acl_block(fs, &inode))) {
2194                         blk = translate_block(ext2fs_file_acl_block(fs,
2195                                                                     &inode));
2196                         if (!blk)
2197                                 continue;
2198
2199                         ext2fs_file_acl_block_set(fs, &inode, blk);
2200
2201                         /*
2202                          * Write the inode to disk so that inode table
2203                          * resizing can work
2204                          */
2205                         retval = ext2fs_write_inode(fs, ino, &inode);
2206                         if (retval)
2207                                 goto err_out;
2208                 }
2209
2210                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2211                         continue;
2212
2213                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2214                                                process_block, bmap);
2215                 if (retval)
2216                         goto err_out;
2217
2218         }
2219
2220 err_out:
2221         ext2fs_free_mem(&block_buf);
2222         ext2fs_close_inode_scan(scan);
2223
2224         return retval;
2225 }
2226
2227 /*
2228  * We need to scan for inode and block bitmaps that may need to be
2229  * moved.  This can take place if the filesystem was formatted for
2230  * RAID arrays using the mke2fs's extended option "stride".
2231  */
2232 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2233 {
2234         dgrp_t i;
2235         blk64_t blk, new_blk;
2236
2237         for (i = 0; i < fs->group_desc_count; i++) {
2238                 blk = ext2fs_block_bitmap_loc(fs, i);
2239                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2240                         new_blk = translate_block(blk);
2241                         if (!new_blk)
2242                                 continue;
2243                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2244                 }
2245
2246                 blk = ext2fs_inode_bitmap_loc(fs, i);
2247                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2248                         new_blk = translate_block(blk);
2249                         if (!new_blk)
2250                                 continue;
2251                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2252                 }
2253         }
2254         return 0;
2255 }
2256
2257 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2258 {
2259         dgrp_t i;
2260         blk64_t blk;
2261         errcode_t retval;
2262         int new_ino_blks_per_grp;
2263         unsigned int j;
2264         char *old_itable = NULL, *new_itable = NULL;
2265         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2266         unsigned long old_ino_size;
2267         int old_itable_size, new_itable_size;
2268
2269         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2270         old_ino_size = EXT2_INODE_SIZE(fs->super);
2271
2272         new_ino_blks_per_grp = ext2fs_div_ceil(
2273                                         EXT2_INODES_PER_GROUP(fs->super) *
2274                                         new_ino_size,
2275                                         fs->blocksize);
2276
2277         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2278
2279         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2280         if (retval)
2281                 return retval;
2282
2283         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2284         if (retval)
2285                 goto err_out;
2286
2287         tmp_old_itable = old_itable;
2288         tmp_new_itable = new_itable;
2289
2290         for (i = 0; i < fs->group_desc_count; i++) {
2291                 blk = ext2fs_inode_table_loc(fs, i);
2292                 retval = io_channel_read_blk64(fs->io, blk,
2293                                 fs->inode_blocks_per_group, old_itable);
2294                 if (retval)
2295                         goto err_out;
2296
2297                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2298                         memcpy(new_itable, old_itable, old_ino_size);
2299
2300                         memset(new_itable+old_ino_size, 0,
2301                                         new_ino_size - old_ino_size);
2302
2303                         new_itable += new_ino_size;
2304                         old_itable += old_ino_size;
2305                 }
2306
2307                 /* reset the pointer */
2308                 old_itable = tmp_old_itable;
2309                 new_itable = tmp_new_itable;
2310
2311                 retval = io_channel_write_blk64(fs->io, blk,
2312                                         new_ino_blks_per_grp, new_itable);
2313                 if (retval)
2314                         goto err_out;
2315         }
2316
2317         /* Update the meta data */
2318         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2319         ext2fs_free_inode_cache(fs->icache);
2320         fs->icache = 0;
2321         fs->super->s_inode_size = new_ino_size;
2322
2323 err_out:
2324         if (old_itable)
2325                 ext2fs_free_mem(&old_itable);
2326
2327         if (new_itable)
2328                 ext2fs_free_mem(&new_itable);
2329
2330         return retval;
2331 }
2332
2333 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2334 {
2335         blk64_t         blk;
2336         ext2_ino_t      ino;
2337         unsigned int    group = 0;
2338         unsigned int    count = 0;
2339         int             total_free = 0;
2340         int             group_free = 0;
2341
2342         /*
2343          * First calculate the block statistics
2344          */
2345         for (blk = fs->super->s_first_data_block;
2346              blk < ext2fs_blocks_count(fs->super); blk++) {
2347                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2348                         group_free++;
2349                         total_free++;
2350                 }
2351                 count++;
2352                 if ((count == fs->super->s_blocks_per_group) ||
2353                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2354                         ext2fs_bg_free_blocks_count_set(fs, group++,
2355                                                         group_free);
2356                         count = 0;
2357                         group_free = 0;
2358                 }
2359         }
2360         total_free = EXT2FS_C2B(fs, total_free);
2361         ext2fs_free_blocks_count_set(fs->super, total_free);
2362
2363         /*
2364          * Next, calculate the inode statistics
2365          */
2366         group_free = 0;
2367         total_free = 0;
2368         count = 0;
2369         group = 0;
2370
2371         /* Protect loop from wrap-around if s_inodes_count maxed */
2372         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2373                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2374                         group_free++;
2375                         total_free++;
2376                 }
2377                 count++;
2378                 if ((count == fs->super->s_inodes_per_group) ||
2379                     (ino == fs->super->s_inodes_count)) {
2380                         ext2fs_bg_free_inodes_count_set(fs, group++,
2381                                                         group_free);
2382                         count = 0;
2383                         group_free = 0;
2384                 }
2385         }
2386         fs->super->s_free_inodes_count = total_free;
2387         ext2fs_mark_super_dirty(fs);
2388         return 0;
2389 }
2390
2391 #define list_for_each_safe(pos, pnext, head) \
2392         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2393              pos = pnext, pnext = pos->next)
2394
2395 static void free_blk_move_list(void)
2396 {
2397         struct list_head *entry, *tmp;
2398         struct blk_move *bmv;
2399
2400         list_for_each_safe(entry, tmp, &blk_move_list) {
2401                 bmv = list_entry(entry, struct blk_move, list);
2402                 list_del(entry);
2403                 ext2fs_free_mem(&bmv);
2404         }
2405         return;
2406 }
2407
2408 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2409 {
2410         errcode_t retval;
2411         int new_ino_blks_per_grp;
2412         ext2fs_block_bitmap bmap;
2413
2414         retval = ext2fs_read_inode_bitmap(fs);
2415         if (retval) {
2416                 fputs(_("Failed to read inode bitmap\n"), stderr);
2417                 return retval;
2418         }
2419         retval = ext2fs_read_block_bitmap(fs);
2420         if (retval) {
2421                 fputs(_("Failed to read block bitmap\n"), stderr);
2422                 return retval;
2423         }
2424         INIT_LIST_HEAD(&blk_move_list);
2425
2426
2427         new_ino_blks_per_grp = ext2fs_div_ceil(
2428                                         EXT2_INODES_PER_GROUP(fs->super)*
2429                                         new_size,
2430                                         fs->blocksize);
2431
2432         /* We may change the file system.
2433          * Mark the file system as invalid so that
2434          * the user is prompted to run fsck.
2435          */
2436         fs->super->s_state &= ~EXT2_VALID_FS;
2437
2438         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2439                                                 &bmap);
2440         if (retval) {
2441                 fputs(_("Failed to allocate block bitmap when "
2442                                 "increasing inode size\n"), stderr);
2443                 return retval;
2444         }
2445         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2446         if (retval) {
2447                 fputs(_("Not enough space to increase inode size \n"), stderr);
2448                 goto err_out;
2449         }
2450         retval = move_block(fs, bmap);
2451         if (retval) {
2452                 fputs(_("Failed to relocate blocks during inode resize \n"),
2453                       stderr);
2454                 goto err_out;
2455         }
2456         retval = inode_scan_and_fix(fs, bmap);
2457         if (retval)
2458                 goto err_out_undo;
2459
2460         retval = group_desc_scan_and_fix(fs, bmap);
2461         if (retval)
2462                 goto err_out_undo;
2463
2464         retval = expand_inode_table(fs, new_size);
2465         if (retval)
2466                 goto err_out_undo;
2467
2468         ext2fs_calculate_summary_stats(fs);
2469
2470         fs->super->s_state |= EXT2_VALID_FS;
2471         /* mark super block and block bitmap as dirty */
2472         ext2fs_mark_super_dirty(fs);
2473         ext2fs_mark_bb_dirty(fs);
2474
2475 err_out:
2476         free_blk_move_list();
2477         ext2fs_free_block_bitmap(bmap);
2478
2479         return retval;
2480
2481 err_out_undo:
2482         free_blk_move_list();
2483         ext2fs_free_block_bitmap(bmap);
2484         fputs(_("Error in resizing the inode size.\n"
2485                         "Run e2undo to undo the "
2486                         "file system changes. \n"), stderr);
2487
2488         return retval;
2489 }
2490
2491 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2492 {
2493         errcode_t retval = 0;
2494         const char *tdb_dir;
2495         char *tdb_file = NULL;
2496         char *dev_name, *tmp_name;
2497
2498         /* (re)open a specific undo file */
2499         if (undo_file && undo_file[0] != 0) {
2500                 retval = set_undo_io_backing_manager(*io_ptr);
2501                 if (retval)
2502                         goto err;
2503                 *io_ptr = undo_io_manager;
2504                 retval = set_undo_io_backup_file(undo_file);
2505                 if (retval)
2506                         goto err;
2507                 printf(_("Overwriting existing filesystem; this can be undone "
2508                          "using the command:\n"
2509                          "    e2undo %s %s\n\n"),
2510                          undo_file, name);
2511                 return retval;
2512         }
2513
2514         /*
2515          * Configuration via a conf file would be
2516          * nice
2517          */
2518         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2519         if (!tdb_dir)
2520                 tdb_dir = "/var/lib/e2fsprogs";
2521
2522         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2523             access(tdb_dir, W_OK))
2524                 return 0;
2525
2526         tmp_name = strdup(name);
2527         if (!tmp_name)
2528                 goto errout;
2529         dev_name = basename(tmp_name);
2530         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2531         if (!tdb_file) {
2532                 free(tmp_name);
2533                 goto errout;
2534         }
2535         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2536         free(tmp_name);
2537
2538         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2539                 retval = errno;
2540                 com_err(program_name, retval,
2541                         _("while trying to delete %s"), tdb_file);
2542                 goto errout;
2543         }
2544
2545         retval = set_undo_io_backing_manager(*io_ptr);
2546         if (retval)
2547                 goto errout;
2548         *io_ptr = undo_io_manager;
2549         retval = set_undo_io_backup_file(tdb_file);
2550         if (retval)
2551                 goto errout;
2552         printf(_("Overwriting existing filesystem; this can be undone "
2553                  "using the command:\n"
2554                  "    e2undo %s %s\n\n"),
2555                  tdb_file, name);
2556
2557         free(tdb_file);
2558         return 0;
2559 errout:
2560         free(tdb_file);
2561 err:
2562         com_err("tune2fs", retval, "while trying to setup undo file\n");
2563         return retval;
2564 }
2565
2566 static int
2567 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2568 {
2569         int retval, nr_users, start;
2570         journal_superblock_t *jsb;
2571         ext2_filsys jfs;
2572         __u8 *j_uuid;
2573         char *journal_path;
2574         char uuid[UUID_STR_SIZE];
2575         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2576
2577         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2578                 return 0;
2579
2580         uuid_unparse(sb->s_journal_uuid, uuid);
2581         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2582         if (!journal_path)
2583                 return 0;
2584
2585         retval = ext2fs_open2(journal_path, io_options,
2586                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2587                               0, 0, unix_io_manager, &jfs);
2588         if (retval) {
2589                 com_err(program_name, retval,
2590                         _("while trying to open %s"),
2591                         journal_path);
2592                 return retval;
2593         }
2594
2595         retval = get_journal_sb(jfs, buf);
2596         if (retval != 0) {
2597                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2598                         fprintf(stderr, _("%s is not a journal device.\n"),
2599                                 journal_path);
2600                 return retval;
2601         }
2602
2603         jsb = (journal_superblock_t *) buf;
2604         /* Find the filesystem UUID */
2605         nr_users = ntohl(jsb->s_nr_users);
2606
2607         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2608         if (j_uuid == NULL) {
2609                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2610                       stderr);
2611                 return EXT2_ET_LOAD_EXT_JOURNAL;
2612         }
2613
2614         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2615
2616         start = ext2fs_journal_sb_start(jfs->blocksize);
2617         /* Write back the journal superblock */
2618         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2619         if (retval != 0) {
2620                 com_err(program_name, retval,
2621                         "while writing journal superblock.");
2622                 return retval;
2623         }
2624
2625         ext2fs_close(jfs);
2626
2627         return 0;
2628 }
2629
2630 #ifndef BUILD_AS_LIB
2631 int main(int argc, char **argv)
2632 #else
2633 int tune2fs_main(int argc, char **argv)
2634 #endif  /* BUILD_AS_LIB */
2635 {
2636         errcode_t retval;
2637         ext2_filsys fs;
2638         struct ext2_super_block *sb;
2639         io_manager io_ptr, io_ptr_orig = NULL;
2640         int rc = 0;
2641         char default_undo_file[1] = { 0 };
2642
2643 #ifdef ENABLE_NLS
2644         setlocale(LC_MESSAGES, "");
2645         setlocale(LC_CTYPE, "");
2646         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2647         textdomain(NLS_CAT_NAME);
2648         set_com_err_gettext(gettext);
2649 #endif
2650         if (argc && *argv)
2651                 program_name = *argv;
2652         add_error_table(&et_ext2_error_table);
2653
2654 #ifdef CONFIG_BUILD_FINDFS
2655         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2656                 do_findfs(argc, argv);
2657 #endif
2658         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2659                 parse_e2label_options(argc, argv);
2660         else
2661                 parse_tune2fs_options(argc, argv);
2662
2663 #ifdef CONFIG_TESTIO_DEBUG
2664         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2665                 io_ptr = test_io_manager;
2666                 test_io_backing_manager = unix_io_manager;
2667         } else
2668 #endif
2669                 io_ptr = unix_io_manager;
2670
2671 retry_open:
2672         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2673                 open_flag |= EXT2_FLAG_SKIP_MMP;
2674
2675         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2676
2677         /* keep the filesystem struct around to dump MMP data */
2678         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2679
2680         retval = ext2fs_open2(device_name, io_options, open_flag,
2681                               0, 0, io_ptr, &fs);
2682         if (retval) {
2683                 com_err(program_name, retval,
2684                         _("while trying to open %s"),
2685                         device_name);
2686                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2687                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2688                         dump_mmp_msg(fs->mmp_buf,
2689                                      _("If you are sure the filesystem "
2690                                        "is not in use on any node, run:\n"
2691                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2692                 else if (retval == EXT2_ET_MMP_FAILED)
2693                         dump_mmp_msg(fs->mmp_buf, NULL);
2694                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2695                         fprintf(stderr,
2696                                 _("MMP block magic is bad. Try to fix it by "
2697                                   "running:\n'e2fsck -f %s'\n"), device_name);
2698                 else if (retval == EXT2_ET_BAD_MAGIC)
2699                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2700                 else if (retval != EXT2_ET_MMP_FAILED)
2701                         fprintf(stderr, "%s",
2702                              _("Couldn't find valid filesystem superblock.\n"));
2703
2704                 ext2fs_free(fs);
2705                 exit(1);
2706         }
2707         if (ext2fs_has_feature_journal_dev(fs->super)) {
2708                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2709                 ext2fs_free(fs);
2710                 exit(1);
2711         }
2712         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2713
2714         if (I_flag) {
2715                 /*
2716                  * Check the inode size is right so we can issue an
2717                  * error message and bail before setting up the tdb
2718                  * file.
2719                  */
2720                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2721                         fprintf(stderr, _("The inode size is already %lu\n"),
2722                                 new_inode_size);
2723                         rc = 1;
2724                         goto closefs;
2725                 }
2726                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2727                         fprintf(stderr, "%s",
2728                                 _("Shrinking inode size is not supported\n"));
2729                         rc = 1;
2730                         goto closefs;
2731                 }
2732                 if (new_inode_size > fs->blocksize) {
2733                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2734                                 new_inode_size, fs->blocksize);
2735                         rc = 1;
2736                         goto closefs;
2737                 }
2738                 /*
2739                  * If inode resize is requested use the
2740                  * Undo I/O manager
2741                  */
2742                 undo_file = default_undo_file;
2743         }
2744
2745         /* Set up an undo file */
2746         if (undo_file && io_ptr_orig == NULL) {
2747                 io_ptr_orig = io_ptr;
2748                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2749                 if (retval) {
2750                         rc = 1;
2751                         goto closefs;
2752                 }
2753                 if (io_ptr != io_ptr_orig) {
2754                         ext2fs_close_free(&fs);
2755                         goto retry_open;
2756                 }
2757         }
2758
2759         sb = fs->super;
2760         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2761
2762         if (print_label) {
2763                 /* For e2label emulation */
2764                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2765                        sb->s_volume_name);
2766                 remove_error_table(&et_ext2_error_table);
2767                 goto closefs;
2768         }
2769
2770         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2771         if (retval) {
2772                 com_err("ext2fs_check_if_mount", retval,
2773                         _("while determining whether %s is mounted."),
2774                         device_name);
2775                 rc = 1;
2776                 goto closefs;
2777         }
2778         /* Normally we only need to write out the superblock */
2779         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2780
2781         if (c_flag) {
2782                 sb->s_max_mnt_count = max_mount_count;
2783                 ext2fs_mark_super_dirty(fs);
2784                 printf(_("Setting maximal mount count to %d\n"),
2785                        max_mount_count);
2786         }
2787         if (C_flag) {
2788                 sb->s_mnt_count = mount_count;
2789                 ext2fs_mark_super_dirty(fs);
2790                 printf(_("Setting current mount count to %d\n"), mount_count);
2791         }
2792         if (e_flag) {
2793                 sb->s_errors = errors;
2794                 ext2fs_mark_super_dirty(fs);
2795                 printf(_("Setting error behavior to %d\n"), errors);
2796         }
2797         if (g_flag) {
2798                 sb->s_def_resgid = resgid;
2799                 ext2fs_mark_super_dirty(fs);
2800                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2801         }
2802         if (i_flag) {
2803                 if ((unsigned long long)interval >= (1ULL << 32)) {
2804                         com_err(program_name, 0,
2805                                 _("interval between checks is too big (%lu)"),
2806                                 interval);
2807                         rc = 1;
2808                         goto closefs;
2809                 }
2810                 sb->s_checkinterval = interval;
2811                 ext2fs_mark_super_dirty(fs);
2812                 printf(_("Setting interval between checks to %lu seconds\n"),
2813                        interval);
2814         }
2815         if (m_flag) {
2816                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2817                                           ext2fs_blocks_count(sb) / 100.0);
2818                 ext2fs_mark_super_dirty(fs);
2819                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2820                         reserved_ratio, ext2fs_r_blocks_count(sb));
2821         }
2822         if (r_flag) {
2823                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2824                         com_err(program_name, 0,
2825                                 _("reserved blocks count is too big (%llu)"),
2826                                 reserved_blocks);
2827                         rc = 1;
2828                         goto closefs;
2829                 }
2830                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2831                 ext2fs_mark_super_dirty(fs);
2832                 printf(_("Setting reserved blocks count to %llu\n"),
2833                        reserved_blocks);
2834         }
2835         if (s_flag == 1) {
2836                 if (ext2fs_has_feature_sparse_super(sb)) {
2837                         fputs(_("\nThe filesystem already has sparse "
2838                                 "superblocks.\n"), stderr);
2839                 } else if (ext2fs_has_feature_meta_bg(sb)) {
2840                         fputs(_("\nSetting the sparse superblock flag not "
2841                                 "supported\nfor filesystems with "
2842                                 "the meta_bg feature enabled.\n"),
2843                                 stderr);
2844                         rc = 1;
2845                         goto closefs;
2846                 } else {
2847                         ext2fs_set_feature_sparse_super(sb);
2848                         sb->s_state &= ~EXT2_VALID_FS;
2849                         ext2fs_mark_super_dirty(fs);
2850                         printf(_("\nSparse superblock flag set.  %s"),
2851                                _(please_fsck));
2852                 }
2853         }
2854         if (s_flag == 0) {
2855                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2856                       stderr);
2857                 rc = 1;
2858                 goto closefs;
2859         }
2860         if (T_flag) {
2861                 sb->s_lastcheck = last_check_time;
2862                 ext2fs_mark_super_dirty(fs);
2863                 printf(_("Setting time filesystem last checked to %s\n"),
2864                        ctime(&last_check_time));
2865         }
2866         if (u_flag) {
2867                 sb->s_def_resuid = resuid;
2868                 ext2fs_mark_super_dirty(fs);
2869                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2870         }
2871         if (L_flag) {
2872                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2873                         fputs(_("Warning: label too long, truncating.\n"),
2874                               stderr);
2875                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2876                 strncpy(sb->s_volume_name, new_label,
2877                         sizeof(sb->s_volume_name));
2878                 ext2fs_mark_super_dirty(fs);
2879         }
2880         if (M_flag) {
2881                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2882                 strncpy(sb->s_last_mounted, new_last_mounted,
2883                         sizeof(sb->s_last_mounted));
2884                 ext2fs_mark_super_dirty(fs);
2885         }
2886         if (mntopts_cmd) {
2887                 rc = update_mntopts(fs, mntopts_cmd);
2888                 if (rc)
2889                         goto closefs;
2890         }
2891         if (features_cmd) {
2892                 rc = update_feature_set(fs, features_cmd);
2893                 if (rc)
2894                         goto closefs;
2895         }
2896         if (extended_cmd) {
2897                 rc = parse_extended_opts(fs, extended_cmd);
2898                 if (rc)
2899                         goto closefs;
2900                 if (clear_mmp && !f_flag) {
2901                         fputs(_("Error in using clear_mmp. "
2902                                 "It must be used with -f\n"),
2903                               stderr);
2904                         goto closefs;
2905                 }
2906         }
2907         if (clear_mmp) {
2908                 rc = ext2fs_mmp_clear(fs);
2909                 goto closefs;
2910         }
2911         if (journal_size || journal_device) {
2912                 rc = add_journal(fs);
2913                 if (rc)
2914                         goto closefs;
2915         }
2916
2917         if (Q_flag) {
2918                 if (mount_flags & EXT2_MF_MOUNTED) {
2919                         fputs(_("The quota feature may only be changed when "
2920                                 "the filesystem is unmounted.\n"), stderr);
2921                         rc = 1;
2922                         goto closefs;
2923                 }
2924                 handle_quota_options(fs);
2925         }
2926
2927         if (U_flag) {
2928                 int set_csum = 0;
2929                 dgrp_t i;
2930                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2931                 __u8 old_uuid[UUID_SIZE];
2932
2933                 if (ext2fs_has_group_desc_csum(fs)) {
2934                         /*
2935                          * Changing the UUID requires rewriting all metadata,
2936                          * which can race with a mounted fs.  Don't allow that.
2937                          */
2938                         if ((mount_flags & EXT2_MF_MOUNTED) && !f_flag) {
2939                                 fputs(_("The UUID may only be "
2940                                         "changed when the filesystem is "
2941                                         "unmounted.\n"), stderr);
2942                                 exit(1);
2943                         }
2944                         if (check_fsck_needed(fs))
2945                                 exit(1);
2946
2947                         /*
2948                          * Determine if the block group checksums are
2949                          * correct so we know whether or not to set
2950                          * them later on.
2951                          */
2952                         for (i = 0; i < fs->group_desc_count; i++)
2953                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2954                                         break;
2955                         if (i >= fs->group_desc_count)
2956                                 set_csum = 1;
2957                 }
2958
2959                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
2960                 if ((strcasecmp(new_UUID, "null") == 0) ||
2961                     (strcasecmp(new_UUID, "clear") == 0)) {
2962                         uuid_clear(sb->s_uuid);
2963                 } else if (strcasecmp(new_UUID, "time") == 0) {
2964                         uuid_generate_time(sb->s_uuid);
2965                 } else if (strcasecmp(new_UUID, "random") == 0) {
2966                         uuid_generate(sb->s_uuid);
2967                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2968                         com_err(program_name, 0, "%s",
2969                                 _("Invalid UUID format\n"));
2970                         rc = 1;
2971                         goto closefs;
2972                 }
2973                 ext2fs_init_csum_seed(fs);
2974                 if (set_csum) {
2975                         for (i = 0; i < fs->group_desc_count; i++)
2976                                 ext2fs_group_desc_csum_set(fs, i);
2977                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2978                 }
2979
2980                 /* If this is a journal dev, we need to copy UUID into jsb */
2981                 if (!(rc = get_journal_sb(fs, buf))) {
2982                         journal_superblock_t *jsb;
2983
2984                         jsb = (journal_superblock_t *) buf;
2985                         fputs(_("Need to update journal superblock.\n"), stdout);
2986                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
2987
2988                         /* Writeback the journal superblock */
2989                         if ((rc = io_channel_write_blk64(fs->io,
2990                                 ext2fs_journal_sb_start(fs->blocksize),
2991                                         -SUPERBLOCK_SIZE, buf)))
2992                                 goto closefs;
2993                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
2994                         goto closefs;
2995                 else {
2996                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
2997
2998                         if ((rc = fs_update_journal_user(sb, old_uuid)))
2999                                 goto closefs;
3000                 }
3001
3002                 ext2fs_mark_super_dirty(fs);
3003                 if (ext2fs_has_feature_metadata_csum(fs->super))
3004                         rewrite_checksums = 1;
3005         }
3006
3007         if (I_flag) {
3008                 if (mount_flags & EXT2_MF_MOUNTED) {
3009                         fputs(_("The inode size may only be "
3010                                 "changed when the filesystem is "
3011                                 "unmounted.\n"), stderr);
3012                         rc = 1;
3013                         goto closefs;
3014                 }
3015                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3016                         fputs(_("Changing the inode size not supported for "
3017                                 "filesystems with the flex_bg\n"
3018                                 "feature enabled.\n"),
3019                               stderr);
3020                         rc = 1;
3021                         goto closefs;
3022                 }
3023                 /*
3024                  * We want to update group descriptor also
3025                  * with the new free inode count
3026                  */
3027                 if (rewrite_checksums)
3028                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3029                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3030                 retval = resize_inode(fs, new_inode_size);
3031                 if (rewrite_checksums)
3032                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3033                 if (retval == 0) {
3034                         printf(_("Setting inode size %lu\n"),
3035                                                         new_inode_size);
3036                         rewrite_checksums = 1;
3037                 } else {
3038                         printf("%s", _("Failed to change inode size\n"));
3039                         rc = 1;
3040                         goto closefs;
3041                 }
3042         }
3043
3044         if (rewrite_checksums)
3045                 rewrite_metadata_checksums(fs);
3046
3047         if (l_flag)
3048                 list_super(sb);
3049         if (stride_set) {
3050                 sb->s_raid_stride = stride;
3051                 ext2fs_mark_super_dirty(fs);
3052                 printf(_("Setting stride size to %d\n"), stride);
3053         }
3054         if (stripe_width_set) {
3055                 sb->s_raid_stripe_width = stripe_width;
3056                 ext2fs_mark_super_dirty(fs);
3057                 printf(_("Setting stripe width to %d\n"), stripe_width);
3058         }
3059         if (ext_mount_opts) {
3060                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3061                         sizeof(fs->super->s_mount_opts));
3062                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3063                 ext2fs_mark_super_dirty(fs);
3064                 printf(_("Setting extended default mount options to '%s'\n"),
3065                        ext_mount_opts);
3066                 free(ext_mount_opts);
3067         }
3068
3069         /* Warn if file system needs recovery and it is opened for writing. */
3070         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3071             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3072             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3073                 fprintf(stderr,
3074 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3075   "\te2fsck -E journal_only %s\n\n"
3076   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3077   "by journal recovery.\n"), device_name);
3078         }
3079
3080         free(device_name);
3081         remove_error_table(&et_ext2_error_table);
3082
3083 closefs:
3084         if (rc) {
3085                 ext2fs_mmp_stop(fs);
3086 #ifndef BUILD_AS_LIB
3087                 exit(1);
3088 #endif
3089         }
3090
3091         convert_64bit(fs, feature_64bit);
3092         return (ext2fs_close_free(&fs) ? 1 : 0);
3093 }