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 "uuid/uuid.h"
  60 #include "e2p/e2p.h"
  61 #include "util.h"
  62 #include "plausible.h"
  63 #include "blkid/blkid.h"
  64 #include "support/quotaio.h"
  65
  66 #include "../version.h"
  67 #include "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 usrquota, grpquota;
  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 };
 164
 165 static __u32 clear_ok_features[3] = {
 166         /* Compat */
 167         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 168                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 169                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 170         /* Incompat */
 171         EXT2_FEATURE_INCOMPAT_FILETYPE |
 172                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 173                 EXT4_FEATURE_INCOMPAT_MMP |
 174                 EXT4_FEATURE_INCOMPAT_64BIT,
 175         /* R/O compat */
 176         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 177                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 178                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 179                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 180                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 181                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 182                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 183                 EXT4_FEATURE_RO_COMPAT_READONLY
 184 };
 185
 186 /**
 187  * Try to get journal super block if any
 188  */
 189 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 190 {
 191         int retval;
 192         journal_superblock_t *jsb;
 193
 194         if (!(jfs->super->s_feature_incompat &
 195             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 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             !EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 483                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
 484                 return 0;
 485
 486         errcode = ext2fs_extent_open(fs, ino, &handle);
 487         if (errcode)
 488                 return errcode;
 489
 490         errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
 491         if (errcode)
 492                 goto out;
 493
 494         do {
 495                 errcode = ext2fs_extent_get_info(handle, &info);
 496                 if (errcode)
 497                         break;
 498
 499                 /*
 500                  * If this is the first extent in an extent block that we
 501                  * haven't visited, rewrite the extent to force the ETB
 502                  * checksum to be rewritten.
 503                  */
 504                 if (info.curr_entry == 1 && info.curr_level != 0 &&
 505                     !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
 506                         errcode = ext2fs_extent_replace(handle, 0, &extent);
 507                         if (errcode)
 508                                 break;
 509                 }
 510
 511                 /* Skip to the end of a block of leaf nodes */
 512                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 513                         errcode = ext2fs_extent_get(handle,
 514                                                     EXT2_EXTENT_LAST_SIB,
 515                                                     &extent);
 516                         if (errcode)
 517                                 break;
 518                 }
 519
 520                 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
 521         } while (errcode == 0);
 522
 523 out:
 524         /* Ok if we run off the end */
 525         if (errcode == EXT2_ET_EXTENT_NO_NEXT)
 526                 errcode = 0;
 527         ext2fs_extent_free(handle);
 528         return errcode;
 529 }
 530
 531 /*
 532  * Rewrite directory blocks with checksums
 533  */
 534 struct rewrite_dir_context {
 535         char *buf;
 536         errcode_t errcode;
 537         ext2_ino_t dir;
 538         int is_htree;
 539 };
 540
 541 static int rewrite_dir_block(ext2_filsys fs,
 542                              blk64_t    *blocknr,
 543                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 544                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 545                              int        ref_offset EXT2FS_ATTR((unused)),
 546                              void       *priv_data)
 547 {
 548         struct ext2_dx_countlimit *dcl = NULL;
 549         struct rewrite_dir_context *ctx = priv_data;
 550         int dcl_offset, changed = 0;
 551
 552         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 553                                               ctx->dir);
 554         if (ctx->errcode)
 555                 return BLOCK_ABORT;
 556
 557         /* if htree node... */
 558         if (ctx->is_htree)
 559                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 560                                          &dcl, &dcl_offset);
 561         if (dcl) {
 562                 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 563                                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
 564                         /* Ensure limit is the max size */
 565                         int max_entries = (fs->blocksize - dcl_offset) /
 566                                           sizeof(struct ext2_dx_entry);
 567                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 568                                 changed = 1;
 569                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 570                         }
 571                 } else {
 572                         /* If htree block is full then rebuild the dir */
 573                         if (ext2fs_le16_to_cpu(dcl->count) ==
 574                             ext2fs_le16_to_cpu(dcl->limit)) {
 575                                 request_dir_fsck_afterwards(fs);
 576                                 return 0;
 577                         }
 578                         /*
 579                          * Ensure dcl->limit is small enough to leave room for
 580                          * the checksum tail.
 581                          */
 582                         int max_entries = (fs->blocksize - (dcl_offset +
 583                                                 sizeof(struct ext2_dx_tail))) /
 584                                           sizeof(struct ext2_dx_entry);
 585                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 586                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 587                         /* Always rewrite checksum */
 588                         changed = 1;
 589                 }
 590         } else {
 591                 unsigned int rec_len, name_size;
 592                 char *top = ctx->buf + fs->blocksize;
 593                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 594                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 595
 596                 /* Find last and penultimate dirent */
 597                 while ((char *)de < top) {
 598                         penultimate_de = last_de;
 599                         last_de = de;
 600                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 601                         if (!ctx->errcode && !rec_len)
 602                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 603                         if (ctx->errcode)
 604                                 return BLOCK_ABORT;
 605                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 606                 }
 607                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 608                 if (ctx->errcode)
 609                         return BLOCK_ABORT;
 610                 name_size = ext2fs_dirent_name_len(last_de);
 611
 612                 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 613                                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
 614                         if (!penultimate_de)
 615                                 return 0;
 616                         if (last_de->inode ||
 617                             name_size ||
 618                             rec_len != sizeof(struct ext2_dir_entry_tail))
 619                                 return 0;
 620                         /*
 621                          * The last dirent is unused and the right length to
 622                          * have stored a checksum.  Erase it.
 623                          */
 624                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 625                                                           &rec_len);
 626                         if (!rec_len)
 627                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 628                         if (ctx->errcode)
 629                                 return BLOCK_ABORT;
 630                         ext2fs_set_rec_len(fs, rec_len +
 631                                         sizeof(struct ext2_dir_entry_tail),
 632                                         penultimate_de);
 633                         changed = 1;
 634                 } else {
 635                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 636                         struct ext2_dir_entry_tail *t;
 637
 638                         /*
 639                          * If the last dirent looks like the tail, just update
 640                          * the checksum.
 641                          */
 642                         if (!last_de->inode &&
 643                             rec_len == csum_size) {
 644                                 t = (struct ext2_dir_entry_tail *)last_de;
 645                                 t->det_reserved_name_len =
 646                                                 EXT2_DIR_NAME_LEN_CSUM;
 647                                 changed = 1;
 648                                 goto out;
 649                         }
 650                         if (name_size & 3)
 651                                 name_size = (name_size & ~3) + 4;
 652                         /* If there's not enough space for the tail, e2fsck */
 653                         if (rec_len <= (8 + name_size + csum_size)) {
 654                                 request_dir_fsck_afterwards(fs);
 655                                 return 0;
 656                         }
 657                         /* Shorten that last de and insert the tail */
 658                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 659                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 660                         ext2fs_initialize_dirent_tail(fs, t);
 661
 662                         /* Always update checksum */
 663                         changed = 1;
 664                 }
 665         }
 666
 667 out:
 668         if (!changed)
 669                 return 0;
 670
 671         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 672                                                0, ctx->dir);
 673         if (ctx->errcode)
 674                 return BLOCK_ABORT;
 675
 676         return 0;
 677 }
 678
 679 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 680                                    struct ext2_inode *inode)
 681 {
 682         errcode_t       retval;
 683         struct rewrite_dir_context ctx;
 684
 685         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 686         if (retval)
 687                 return retval;
 688
 689         ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
 690         ctx.dir = dir;
 691         ctx.errcode = 0;
 692         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 693                                                 BLOCK_FLAG_DATA_ONLY,
 694                                        0, rewrite_dir_block, &ctx);
 695
 696         ext2fs_free_mem(&ctx.buf);
 697         if (retval)
 698                 return retval;
 699
 700         return ctx.errcode;
 701 }
 702
 703 /*
 704  * Forcibly set checksums in all inodes.
 705  */
 706 static void rewrite_inodes(ext2_filsys fs)
 707 {
 708         int length = EXT2_INODE_SIZE(fs->super);
 709         struct ext2_inode *inode, *zero;
 710         char            *ea_buf;
 711         ext2_inode_scan scan;
 712         errcode_t       retval;
 713         ext2_ino_t      ino;
 714         blk64_t         file_acl_block;
 715         int             inode_dirty;
 716
 717         if (fs->super->s_creator_os != EXT2_OS_LINUX)
 718                 return;
 719
 720         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 721         if (retval) {
 722                 com_err("set_csum", retval, "while opening inode scan");
 723                 exit(1);
 724         }
 725
 726         retval = ext2fs_get_mem(length, &inode);
 727         if (retval) {
 728                 com_err("set_csum", retval, "while allocating memory");
 729                 exit(1);
 730         }
 731
 732         retval = ext2fs_get_memzero(length, &zero);
 733         if (retval) {
 734                 com_err("set_csum", retval, "while allocating memory");
 735                 exit(1);
 736         }
 737
 738         retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
 739         if (retval) {
 740                 com_err("set_csum", retval, "while allocating memory");
 741                 exit(1);
 742         }
 743
 744         do {
 745                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 746                 if (retval) {
 747                         com_err("set_csum", retval, "while getting next inode");
 748                         exit(1);
 749                 }
 750                 if (!ino)
 751                         break;
 752                 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 753                         inode_dirty = 1;
 754                 } else {
 755                         if (memcmp(inode, zero, length) != 0) {
 756                                 memset(inode, 0, length);
 757                                 inode_dirty = 1;
 758                         } else {
 759                                 inode_dirty = 0;
 760                         }
 761                 }
 762
 763                 if (inode_dirty) {
 764                         retval = ext2fs_write_inode_full(fs, ino, inode,
 765                                                          length);
 766                         if (retval) {
 767                                 com_err("set_csum", retval, "while writing "
 768                                         "inode");
 769                                 exit(1);
 770                         }
 771                 }
 772
 773                 retval = rewrite_extents(fs, ino, inode);
 774                 if (retval) {
 775                         com_err("rewrite_extents", retval,
 776                                 "while rewriting extents");
 777                         exit(1);
 778                 }
 779
 780                 if (LINUX_S_ISDIR(inode->i_mode) &&
 781                     ext2fs_inode_has_valid_blocks2(fs, inode)) {
 782                         retval = rewrite_directory(fs, ino, inode);
 783                         if (retval) {
 784                                 com_err("rewrite_directory", retval,
 785                                         "while rewriting directories");
 786                                 exit(1);
 787                         }
 788                 }
 789
 790                 file_acl_block = ext2fs_file_acl_block(fs, inode);
 791                 if (!file_acl_block)
 792                         continue;
 793                 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
 794                 if (retval) {
 795                         com_err("rewrite_eablock", retval,
 796                                 "while rewriting extended attribute");
 797                         exit(1);
 798                 }
 799                 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
 800                                                 ino);
 801                 if (retval) {
 802                         com_err("rewrite_eablock", retval,
 803                                 "while rewriting extended attribute");
 804                         exit(1);
 805                 }
 806         } while (ino);
 807
 808         ext2fs_free_mem(&zero);
 809         ext2fs_free_mem(&inode);
 810         ext2fs_free_mem(&ea_buf);
 811         ext2fs_close_inode_scan(scan);
 812 }
 813
 814 static void rewrite_metadata_checksums(ext2_filsys fs)
 815 {
 816         errcode_t retval;
 817         dgrp_t i;
 818
 819         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 820         ext2fs_init_csum_seed(fs);
 821         for (i = 0; i < fs->group_desc_count; i++)
 822                 ext2fs_group_desc_csum_set(fs, i);
 823         retval = ext2fs_read_bitmaps(fs);
 824         if (retval) {
 825                 com_err("rewrite_metadata_checksums", retval,
 826                         "while reading bitmaps");
 827                 exit(1);
 828         }
 829         rewrite_inodes(fs);
 830         ext2fs_mark_ib_dirty(fs);
 831         ext2fs_mark_bb_dirty(fs);
 832         ext2fs_mmp_update2(fs, 1);
 833         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 834         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 835         if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 836                                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
 837                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 838         else
 839                 fs->super->s_checksum_type = 0;
 840         ext2fs_mark_super_dirty(fs);
 841 }
 842
 843 static void enable_uninit_bg(ext2_filsys fs)
 844 {
 845         struct ext2_group_desc *gd;
 846         dgrp_t i;
 847
 848         for (i = 0; i < fs->group_desc_count; i++) {
 849                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 850                 gd->bg_itable_unused = 0;
 851                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 852                 ext2fs_group_desc_csum_set(fs, i);
 853         }
 854         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 855 }
 856
 857 static errcode_t zero_empty_inodes(ext2_filsys fs)
 858 {
 859         int length = EXT2_INODE_SIZE(fs->super);
 860         struct ext2_inode *inode = NULL;
 861         ext2_inode_scan scan;
 862         errcode_t       retval;
 863         ext2_ino_t      ino;
 864
 865         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 866         if (retval)
 867                 goto out;
 868
 869         retval = ext2fs_get_mem(length, &inode);
 870         if (retval)
 871                 goto out;
 872
 873         do {
 874                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 875                 if (retval)
 876                         goto out;
 877                 if (!ino)
 878                         break;
 879                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 880                         memset(inode, 0, length);
 881                         retval = ext2fs_write_inode_full(fs, ino, inode,
 882                                                          length);
 883                         if (retval)
 884                                 goto out;
 885                 }
 886         } while (1);
 887
 888 out:
 889         ext2fs_free_mem(&inode);
 890         ext2fs_close_inode_scan(scan);
 891         return retval;
 892 }
 893
 894 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
 895 {
 896         struct ext2_group_desc *gd;
 897         dgrp_t i;
 898         errcode_t retval;
 899         blk64_t b, c, d;
 900
 901         /* Load bitmaps to ensure that the uninit ones get written out */
 902         fs->super->s_feature_ro_compat |= csum_feature_flag;
 903         retval = ext2fs_read_bitmaps(fs);
 904         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
 905         if (retval) {
 906                 com_err("disable_uninit_bg", retval,
 907                         "while reading bitmaps");
 908                 request_fsck_afterwards(fs);
 909                 return retval;
 910         }
 911         ext2fs_mark_ib_dirty(fs);
 912         ext2fs_mark_bb_dirty(fs);
 913
 914         /* If we're only turning off uninit_bg, zero the inodes */
 915         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
 916                 retval = zero_empty_inodes(fs);
 917                 if (retval) {
 918                         com_err("disable_uninit_bg", retval,
 919                                 "while zeroing unused inodes");
 920                         request_fsck_afterwards(fs);
 921                         return retval;
 922                 }
 923         }
 924
 925         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
 926         for (i = 0; i < fs->group_desc_count; i++) {
 927                 b = ext2fs_block_bitmap_loc(fs, i);
 928                 ext2fs_mark_block_bitmap2(fs->block_map, b);
 929                 b = ext2fs_inode_bitmap_loc(fs, i);
 930                 ext2fs_mark_block_bitmap2(fs->block_map, b);
 931
 932                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
 933                 if (retval == 0 && b)
 934                         ext2fs_mark_block_bitmap2(fs->block_map, b);
 935                 if (retval == 0 && c)
 936                         ext2fs_mark_block_bitmap2(fs->block_map, c);
 937                 if (retval == 0 && d)
 938                         ext2fs_mark_block_bitmap2(fs->block_map, d);
 939                 if (retval) {
 940                         com_err("disable_uninit_bg", retval,
 941                                 "while initializing block bitmaps");
 942                         request_fsck_afterwards(fs);
 943                 }
 944
 945                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 946                 gd->bg_itable_unused = 0;
 947                 gd->bg_flags = 0;
 948                 ext2fs_group_desc_csum_set(fs, i);
 949         }
 950         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 951         ext2fs_mark_super_dirty(fs);
 952
 953         return 0;
 954 }
 955
 956 /*
 957  * Update the feature set as provided by the user.
 958  */
 959 static int update_feature_set(ext2_filsys fs, char *features)
 960 {
 961         struct ext2_super_block *sb = fs->super;
 962         __u32           old_features[3];
 963         int             type_err;
 964         unsigned int    mask_err;
 965         errcode_t       err;
 966
 967 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 968                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 969 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 970                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 971 #define FEATURE_CHANGED(type, mask) ((mask) & \
 972                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 973
 974         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 975         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 976         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 977
 978         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 979                               ok_features, clear_ok_features,
 980                               &type_err, &mask_err)) {
 981                 if (!mask_err)
 982                         fprintf(stderr,
 983                                 _("Invalid filesystem option set: %s\n"),
 984                                 features);
 985                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 986                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 987                                           "not supported.\n"),
 988                                 e2p_feature2string(type_err &
 989                                                    E2P_FEATURE_TYPE_MASK,
 990                                                    mask_err));
 991                 else
 992                         fprintf(stderr, _("Setting filesystem feature '%s' "
 993                                           "not supported.\n"),
 994                                 e2p_feature2string(type_err, mask_err));
 995                 return 1;
 996         }
 997
 998         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 999                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1000                     !(mount_flags & EXT2_MF_READONLY)) {
1001                         fputs(_("The has_journal feature may only be "
1002                                 "cleared when the filesystem is\n"
1003                                 "unmounted or mounted "
1004                                 "read-only.\n"), stderr);
1005                         return 1;
1006                 }
1007                 if ((sb->s_feature_incompat &
1008                     EXT3_FEATURE_INCOMPAT_RECOVER) &&
1009                     f_flag < 2) {
1010                         fputs(_("The needs_recovery flag is set.  "
1011                                 "Please run e2fsck before clearing\n"
1012                                 "the has_journal flag.\n"), stderr);
1013                         return 1;
1014                 }
1015                 if (sb->s_journal_inum) {
1016                         if (remove_journal_inode(fs))
1017                                 return 1;
1018                 }
1019                 if (sb->s_journal_dev) {
1020                         if (remove_journal_device(fs))
1021                                 return 1;
1022                 }
1023         }
1024
1025         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1026                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1027                 if (sb->s_feature_incompat &
1028                         EXT2_FEATURE_INCOMPAT_META_BG) {
1029                         fputs(_("Setting filesystem feature 'sparse_super' "
1030                                 "not supported\nfor filesystems with "
1031                                 "the meta_bg feature enabled.\n"),
1032                                 stderr);
1033                         return 1;
1034                 }
1035         }
1036
1037         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1038                 int error;
1039
1040                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1041                     (mount_flags & EXT2_MF_READONLY)) {
1042                         fputs(_("The multiple mount protection feature can't\n"
1043                                 "be set if the filesystem is mounted or\n"
1044                                 "read-only.\n"), stderr);
1045                         return 1;
1046                 }
1047
1048                 error = ext2fs_mmp_init(fs);
1049                 if (error) {
1050                         fputs(_("\nError while enabling multiple mount "
1051                                 "protection feature."), stderr);
1052                         return 1;
1053                 }
1054
1055                 /*
1056                  * We want to update group desc with the new free blocks count
1057                  */
1058                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1059
1060                 printf(_("Multiple mount protection has been enabled "
1061                          "with update interval %ds.\n"),
1062                        sb->s_mmp_update_interval);
1063         }
1064
1065         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1066                 int error;
1067
1068                 if (mount_flags & EXT2_MF_READONLY) {
1069                         fputs(_("The multiple mount protection feature cannot\n"
1070                                 "be disabled if the filesystem is readonly.\n"),
1071                                 stderr);
1072                         return 1;
1073                 }
1074
1075                 error = ext2fs_read_bitmaps(fs);
1076                 if (error) {
1077                         fputs(_("Error while reading bitmaps\n"), stderr);
1078                         return 1;
1079                 }
1080
1081                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1082                 if (error) {
1083                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1084
1085                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1086                                 printf(_("Magic number in MMP block does not "
1087                                          "match. expected: %x, actual: %x\n"),
1088                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1089                         else
1090                                 com_err(program_name, error, "%s",
1091                                         _("while reading MMP block."));
1092                         goto mmp_error;
1093                 }
1094
1095                 /* We need to force out the group descriptors as well */
1096                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1097                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1098 mmp_error:
1099                 sb->s_mmp_block = 0;
1100                 sb->s_mmp_update_interval = 0;
1101         }
1102
1103         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1104                 /*
1105                  * If adding a journal flag, let the create journal
1106                  * code below handle setting the flag and creating the
1107                  * journal.  We supply a default size if necessary.
1108                  */
1109                 if (!journal_size)
1110                         journal_size = -1;
1111                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1112         }
1113
1114         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1115                 if (!sb->s_def_hash_version)
1116                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1117                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1118                         uuid_generate((unsigned char *) sb->s_hash_seed);
1119         }
1120
1121         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1122                 if (ext2fs_check_desc(fs)) {
1123                         fputs(_("Clearing the flex_bg flag would "
1124                                 "cause the the filesystem to be\n"
1125                                 "inconsistent.\n"), stderr);
1126                         return 1;
1127                 }
1128         }
1129
1130         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1131                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1132                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1133                     !(mount_flags & EXT2_MF_READONLY)) {
1134                         fputs(_("The huge_file feature may only be "
1135                                 "cleared when the filesystem is\n"
1136                                 "unmounted or mounted "
1137                                 "read-only.\n"), stderr);
1138                         return 1;
1139                 }
1140         }
1141
1142         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1143                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1144                 if (check_fsck_needed(fs))
1145                         exit(1);
1146                 if (mount_flags & EXT2_MF_MOUNTED) {
1147                         fputs(_("Cannot enable metadata_csum on a mounted "
1148                                 "filesystem!\n"), stderr);
1149                         exit(1);
1150                 }
1151                 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
1152                                 EXT3_FEATURE_INCOMPAT_EXTENTS))
1153                         printf("%s",
1154                                _("Extents are not enabled.  The file extent "
1155                                  "tree can be checksummed, whereas block maps "
1156                                  "cannot.  Not enabling extents reduces the "
1157                                  "coverage of metadata checksumming.  "
1158                                  "Re-run with -O extent to rectify.\n"));
1159                 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
1160                                 EXT4_FEATURE_INCOMPAT_64BIT))
1161                         printf("%s",
1162                                _("64-bit filesystem support is not enabled.  "
1163                                  "The larger fields afforded by this feature "
1164                                  "enable full-strength checksumming.  "
1165                                  "Run resize2fs -b to rectify.\n"));
1166                 rewrite_checksums = 1;
1167                 /* metadata_csum supersedes uninit_bg */
1168                 fs->super->s_feature_ro_compat &=
1169                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1170
1171                 /* if uninit_bg was previously off, rewrite group desc */
1172                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1173                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1174                         enable_uninit_bg(fs);
1175
1176                 /*
1177                  * Since metadata_csum supersedes uninit_bg, pretend like
1178                  * uninit_bg has been off all along.
1179                  */
1180                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1181                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1182         }
1183
1184         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1185                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1186                 __u32   test_features[3];
1187
1188                 if (check_fsck_needed(fs))
1189                         exit(1);
1190                 if (mount_flags & EXT2_MF_MOUNTED) {
1191                         fputs(_("Cannot disable metadata_csum on a mounted "
1192                                 "filesystem!\n"), stderr);
1193                         exit(1);
1194                 }
1195                 rewrite_checksums = 1;
1196
1197                 /* Enable uninit_bg unless the user expressly turned it off */
1198                 memcpy(test_features, old_features, sizeof(test_features));
1199                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1200                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1201                 e2p_edit_feature2(features, test_features, ok_features,
1202                                   clear_ok_features, NULL, NULL);
1203                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1204                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1205                         fs->super->s_feature_ro_compat |=
1206                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1207
1208                 /*
1209                  * If we're turning off metadata_csum and not turning on
1210                  * uninit_bg, rewrite group desc.
1211                  */
1212                 if (!(fs->super->s_feature_ro_compat &
1213                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1214                         err = disable_uninit_bg(fs,
1215                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1216                         if (err)
1217                                 return 1;
1218                 } else
1219                         /*
1220                          * metadata_csum previously provided uninit_bg, so if
1221                          * we're also setting the uninit_bg feature bit,
1222                          * pretend like it was previously enabled.  Checksums
1223                          * will be rewritten with crc16 later.
1224                          */
1225                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1226                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1227         }
1228
1229         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1230                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1231                 /* Do not enable uninit_bg when metadata_csum enabled */
1232                 if (fs->super->s_feature_ro_compat &
1233                     EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
1234                         fs->super->s_feature_ro_compat &=
1235                                 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1236                 else
1237                         enable_uninit_bg(fs);
1238         }
1239
1240         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1241                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1242                 err = disable_uninit_bg(fs,
1243                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1244                 if (err)
1245                         return 1;
1246         }
1247
1248         /*
1249          * We don't actually toggle 64bit; resize2fs does that.  But this
1250          * must come after the metadata_csum feature_on so that it won't
1251          * complain about the lack of 64bit.
1252          */
1253         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1254                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1255                 if (mount_flags & EXT2_MF_MOUNTED) {
1256                         fprintf(stderr, _("Cannot enable 64-bit mode "
1257                                           "while mounted!\n"));
1258                         exit(1);
1259                 }
1260                 sb->s_feature_incompat &= ~EXT4_FEATURE_INCOMPAT_64BIT;
1261                 feature_64bit = 1;
1262         }
1263         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1264                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1265                 if (mount_flags & EXT2_MF_MOUNTED) {
1266                         fprintf(stderr, _("Cannot disable 64-bit mode "
1267                                           "while mounted!\n"));
1268                         exit(1);
1269                 }
1270                 sb->s_feature_incompat |= EXT4_FEATURE_INCOMPAT_64BIT;
1271                 feature_64bit = -1;
1272         }
1273
1274         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1275                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1276                 /*
1277                  * Set the Q_flag here and handle the quota options in the code
1278                  * below.
1279                  */
1280                 if (!Q_flag) {
1281                         Q_flag = 1;
1282                         /* Enable both user quota and group quota by default */
1283                         usrquota = QOPT_ENABLE;
1284                         grpquota = QOPT_ENABLE;
1285                 }
1286                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1287         }
1288
1289         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1290                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1291                 /*
1292                  * Set the Q_flag here and handle the quota options in the code
1293                  * below.
1294                  */
1295                 if (Q_flag)
1296                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1297                                 "arguments.\n"), stderr);
1298                 Q_flag = 1;
1299                 /* Disable both user quota and group quota by default */
1300                 usrquota = QOPT_DISABLE;
1301                 grpquota = QOPT_DISABLE;
1302         }
1303
1304         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1305                 fs->super->s_encrypt_algos[0] =
1306                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1307                 fs->super->s_encrypt_algos[1] =
1308                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1309         }
1310
1311         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1312             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1313              sb->s_feature_incompat))
1314                 ext2fs_update_dynamic_rev(fs);
1315
1316         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1317                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1318             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1319                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1320             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1321                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1322             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1323                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1324             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1325                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1326                 request_fsck_afterwards(fs);
1327
1328         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1329             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1330             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1331                 ext2fs_mark_super_dirty(fs);
1332
1333         return 0;
1334 }
1335
1336 /*
1337  * Add a journal to the filesystem.
1338  */
1339 static int add_journal(ext2_filsys fs)
1340 {
1341         unsigned long journal_blocks;
1342         errcode_t       retval;
1343         ext2_filsys     jfs;
1344         io_manager      io_ptr;
1345
1346         if (fs->super->s_feature_compat &
1347             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
1348                 fputs(_("The filesystem already has a journal.\n"), stderr);
1349                 goto err;
1350         }
1351         if (journal_device) {
1352                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1353                                         NULL))
1354                         proceed_question(-1);
1355                 check_mount(journal_device, 0, _("journal"));
1356 #ifdef CONFIG_TESTIO_DEBUG
1357                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1358                         io_ptr = test_io_manager;
1359                         test_io_backing_manager = unix_io_manager;
1360                 } else
1361 #endif
1362                         io_ptr = unix_io_manager;
1363                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1364                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1365                                      fs->blocksize, io_ptr, &jfs);
1366                 if (retval) {
1367                         com_err(program_name, retval,
1368                                 _("\n\twhile trying to open journal on %s\n"),
1369                                 journal_device);
1370                         goto err;
1371                 }
1372                 printf(_("Creating journal on device %s: "),
1373                        journal_device);
1374                 fflush(stdout);
1375
1376                 retval = ext2fs_add_journal_device(fs, jfs);
1377                 ext2fs_close_free(&jfs);
1378                 if (retval) {
1379                         com_err(program_name, retval,
1380                                 _("while adding filesystem to journal on %s"),
1381                                 journal_device);
1382                         goto err;
1383                 }
1384                 fputs(_("done\n"), stdout);
1385         } else if (journal_size) {
1386                 fputs(_("Creating journal inode: "), stdout);
1387                 fflush(stdout);
1388                 journal_blocks = figure_journal_size(journal_size, fs);
1389
1390                 if (journal_location_string)
1391                         journal_location =
1392                                 parse_num_blocks2(journal_location_string,
1393                                                   fs->super->s_log_block_size);
1394                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1395                                                    journal_location,
1396                                                    journal_flags);
1397                 if (retval) {
1398                         fprintf(stderr, "\n");
1399                         com_err(program_name, retval, "%s",
1400                                 _("\n\twhile trying to create journal file"));
1401                         return retval;
1402                 } else
1403                         fputs(_("done\n"), stdout);
1404                 /*
1405                  * If the filesystem wasn't mounted, we need to force
1406                  * the block group descriptors out.
1407                  */
1408                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1409                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1410         }
1411         print_check_message(fs->super->s_max_mnt_count,
1412                             fs->super->s_checkinterval);
1413         return 0;
1414
1415 err:
1416         free(journal_device);
1417         return 1;
1418 }
1419
1420 static void handle_quota_options(ext2_filsys fs)
1421 {
1422         quota_ctx_t qctx;
1423         ext2_ino_t qf_ino;
1424
1425         if (!usrquota && !grpquota)
1426                 /* Nothing to do. */
1427                 return;
1428
1429         quota_init_context(&qctx, fs, -1);
1430
1431         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
1432                 quota_compute_usage(qctx);
1433
1434         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
1435                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
1436                                                 QFMT_VFS_V1)) > 0)
1437                         quota_update_limits(qctx, qf_ino, USRQUOTA);
1438                 quota_write_inode(qctx, USRQUOTA);
1439         } else if (usrquota == QOPT_DISABLE) {
1440                 quota_remove_inode(fs, USRQUOTA);
1441         }
1442
1443         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
1444                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
1445                                                 QFMT_VFS_V1)) > 0)
1446                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
1447                 quota_write_inode(qctx, GRPQUOTA);
1448         } else if (grpquota == QOPT_DISABLE) {
1449                 quota_remove_inode(fs, GRPQUOTA);
1450         }
1451
1452         quota_release_context(&qctx);
1453
1454         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
1455                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
1456                 ext2fs_mark_super_dirty(fs);
1457         } else if (!fs->super->s_usr_quota_inum &&
1458                    !fs->super->s_grp_quota_inum) {
1459                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1460                 ext2fs_mark_super_dirty(fs);
1461         }
1462
1463         return;
1464 }
1465
1466 static void parse_quota_opts(const char *opts)
1467 {
1468         char    *buf, *token, *next, *p;
1469         int     len;
1470
1471         len = strlen(opts);
1472         buf = malloc(len+1);
1473         if (!buf) {
1474                 fputs(_("Couldn't allocate memory to parse quota "
1475                         "options!\n"), stderr);
1476                 exit(1);
1477         }
1478         strcpy(buf, opts);
1479         for (token = buf; token && *token; token = next) {
1480                 p = strchr(token, ',');
1481                 next = 0;
1482                 if (p) {
1483                         *p = 0;
1484                         next = p+1;
1485                 }
1486
1487                 if (strcmp(token, "usrquota") == 0) {
1488                         usrquota = QOPT_ENABLE;
1489                 } else if (strcmp(token, "^usrquota") == 0) {
1490                         usrquota = QOPT_DISABLE;
1491                 } else if (strcmp(token, "grpquota") == 0) {
1492                         grpquota = QOPT_ENABLE;
1493                 } else if (strcmp(token, "^grpquota") == 0) {
1494                         grpquota = QOPT_DISABLE;
1495                 } else {
1496                         fputs(_("\nBad quota options specified.\n\n"
1497                                 "Following valid quota options are available "
1498                                 "(pass by separating with comma):\n"
1499                                 "\t[^]usrquota\n"
1500                                 "\t[^]grpquota\n"
1501                                 "\n\n"), stderr);
1502                         free(buf);
1503                         exit(1);
1504                 }
1505         }
1506         free(buf);
1507 }
1508
1509 static void parse_e2label_options(int argc, char ** argv)
1510 {
1511         if ((argc < 2) || (argc > 3)) {
1512                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1513                 exit(1);
1514         }
1515         io_options = strchr(argv[1], '?');
1516         if (io_options)
1517                 *io_options++ = 0;
1518         device_name = blkid_get_devname(NULL, argv[1], NULL);
1519         if (!device_name) {
1520                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1521                         argv[1]);
1522                 exit(1);
1523         }
1524         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1525         if (argc == 3) {
1526                 open_flag |= EXT2_FLAG_RW;
1527                 L_flag = 1;
1528                 new_label = argv[2];
1529         } else
1530                 print_label++;
1531 }
1532
1533 static time_t parse_time(char *str)
1534 {
1535         struct  tm      ts;
1536
1537         if (strcmp(str, "now") == 0) {
1538                 return (time(0));
1539         }
1540         memset(&ts, 0, sizeof(ts));
1541 #ifdef HAVE_STRPTIME
1542         strptime(str, "%Y%m%d%H%M%S", &ts);
1543 #else
1544         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1545                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1546         ts.tm_year -= 1900;
1547         ts.tm_mon -= 1;
1548         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1549             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1550             ts.tm_min > 59 || ts.tm_sec > 61)
1551                 ts.tm_mday = 0;
1552 #endif
1553         if (ts.tm_mday == 0) {
1554                 com_err(program_name, 0,
1555                         _("Couldn't parse date/time specifier: %s"),
1556                         str);
1557                 usage();
1558         }
1559         ts.tm_isdst = -1;
1560         return (mktime(&ts));
1561 }
1562
1563 static void parse_tune2fs_options(int argc, char **argv)
1564 {
1565         int c;
1566         char *tmp;
1567         struct group *gr;
1568         struct passwd *pw;
1569         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1570
1571         open_flag = 0;
1572         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1573         while ((c = getopt(argc, argv, optstring)) != EOF)
1574                 switch (c) {
1575                 case 'c':
1576                         max_mount_count = strtol(optarg, &tmp, 0);
1577                         if (*tmp || max_mount_count > 16000) {
1578                                 com_err(program_name, 0,
1579                                         _("bad mounts count - %s"),
1580                                         optarg);
1581                                 usage();
1582                         }
1583                         if (max_mount_count == 0)
1584                                 max_mount_count = -1;
1585                         c_flag = 1;
1586                         open_flag = EXT2_FLAG_RW;
1587                         break;
1588                 case 'C':
1589                         mount_count = strtoul(optarg, &tmp, 0);
1590                         if (*tmp || mount_count > 16000) {
1591                                 com_err(program_name, 0,
1592                                         _("bad mounts count - %s"),
1593                                         optarg);
1594                                 usage();
1595                         }
1596                         C_flag = 1;
1597                         open_flag = EXT2_FLAG_RW;
1598                         break;
1599                 case 'e':
1600                         if (strcmp(optarg, "continue") == 0)
1601                                 errors = EXT2_ERRORS_CONTINUE;
1602                         else if (strcmp(optarg, "remount-ro") == 0)
1603                                 errors = EXT2_ERRORS_RO;
1604                         else if (strcmp(optarg, "panic") == 0)
1605                                 errors = EXT2_ERRORS_PANIC;
1606                         else {
1607                                 com_err(program_name, 0,
1608                                         _("bad error behavior - %s"),
1609                                         optarg);
1610                                 usage();
1611                         }
1612                         e_flag = 1;
1613                         open_flag = EXT2_FLAG_RW;
1614                         break;
1615                 case 'E':
1616                         extended_cmd = optarg;
1617                         open_flag |= EXT2_FLAG_RW;
1618                         break;
1619                 case 'f': /* Force */
1620                         f_flag++;
1621                         break;
1622                 case 'g':
1623                         resgid = strtoul(optarg, &tmp, 0);
1624                         if (*tmp) {
1625                                 gr = getgrnam(optarg);
1626                                 if (gr == NULL)
1627                                         tmp = optarg;
1628                                 else {
1629                                         resgid = gr->gr_gid;
1630                                         *tmp = 0;
1631                                 }
1632                         }
1633                         if (*tmp) {
1634                                 com_err(program_name, 0,
1635                                         _("bad gid/group name - %s"),
1636                                         optarg);
1637                                 usage();
1638                         }
1639                         g_flag = 1;
1640                         open_flag = EXT2_FLAG_RW;
1641                         break;
1642                 case 'i':
1643                         interval = strtoul(optarg, &tmp, 0);
1644                         switch (*tmp) {
1645                         case 's':
1646                                 tmp++;
1647                                 break;
1648                         case '\0':
1649                         case 'd':
1650                         case 'D': /* days */
1651                                 interval *= 86400;
1652                                 if (*tmp != '\0')
1653                                         tmp++;
1654                                 break;
1655                         case 'm':
1656                         case 'M': /* months! */
1657                                 interval *= 86400 * 30;
1658                                 tmp++;
1659                                 break;
1660                         case 'w':
1661                         case 'W': /* weeks */
1662                                 interval *= 86400 * 7;
1663                                 tmp++;
1664                                 break;
1665                         }
1666                         if (*tmp) {
1667                                 com_err(program_name, 0,
1668                                         _("bad interval - %s"), optarg);
1669                                 usage();
1670                         }
1671                         i_flag = 1;
1672                         open_flag = EXT2_FLAG_RW;
1673                         break;
1674                 case 'j':
1675                         if (!journal_size)
1676                                 journal_size = -1;
1677                         open_flag = EXT2_FLAG_RW;
1678                         break;
1679                 case 'J':
1680                         parse_journal_opts(optarg);
1681                         open_flag = EXT2_FLAG_RW;
1682                         break;
1683                 case 'l':
1684                         l_flag = 1;
1685                         break;
1686                 case 'L':
1687                         new_label = optarg;
1688                         L_flag = 1;
1689                         open_flag |= EXT2_FLAG_RW |
1690                                 EXT2_FLAG_JOURNAL_DEV_OK;
1691                         break;
1692                 case 'm':
1693                         reserved_ratio = strtod(optarg, &tmp);
1694                         if (*tmp || reserved_ratio > 50 ||
1695                             reserved_ratio < 0) {
1696                                 com_err(program_name, 0,
1697                                         _("bad reserved block ratio - %s"),
1698                                         optarg);
1699                                 usage();
1700                         }
1701                         m_flag = 1;
1702                         open_flag = EXT2_FLAG_RW;
1703                         break;
1704                 case 'M':
1705                         new_last_mounted = optarg;
1706                         M_flag = 1;
1707                         open_flag = EXT2_FLAG_RW;
1708                         break;
1709                 case 'o':
1710                         if (mntopts_cmd) {
1711                                 com_err(program_name, 0, "%s",
1712                                         _("-o may only be specified once"));
1713                                 usage();
1714                         }
1715                         mntopts_cmd = optarg;
1716                         open_flag = EXT2_FLAG_RW;
1717                         break;
1718                 case 'O':
1719                         if (features_cmd) {
1720                                 com_err(program_name, 0, "%s",
1721                                         _("-O may only be specified once"));
1722                                 usage();
1723                         }
1724                         features_cmd = optarg;
1725                         open_flag = EXT2_FLAG_RW;
1726                         break;
1727                 case 'Q':
1728                         Q_flag = 1;
1729                         parse_quota_opts(optarg);
1730                         open_flag = EXT2_FLAG_RW;
1731                         break;
1732                 case 'r':
1733                         reserved_blocks = strtoul(optarg, &tmp, 0);
1734                         if (*tmp) {
1735                                 com_err(program_name, 0,
1736                                         _("bad reserved blocks count - %s"),
1737                                         optarg);
1738                                 usage();
1739                         }
1740                         r_flag = 1;
1741                         open_flag = EXT2_FLAG_RW;
1742                         break;
1743                 case 's': /* Deprecated */
1744                         s_flag = atoi(optarg);
1745                         open_flag = EXT2_FLAG_RW;
1746                         break;
1747                 case 'T':
1748                         T_flag = 1;
1749                         last_check_time = parse_time(optarg);
1750                         open_flag = EXT2_FLAG_RW;
1751                         break;
1752                 case 'u':
1753                                 resuid = strtoul(optarg, &tmp, 0);
1754                                 if (*tmp) {
1755                                         pw = getpwnam(optarg);
1756                                         if (pw == NULL)
1757                                                 tmp = optarg;
1758                                         else {
1759                                                 resuid = pw->pw_uid;
1760                                                 *tmp = 0;
1761                                         }
1762                                 }
1763                                 if (*tmp) {
1764                                         com_err(program_name, 0,
1765                                                 _("bad uid/user name - %s"),
1766                                                 optarg);
1767                                         usage();
1768                                 }
1769                                 u_flag = 1;
1770                                 open_flag = EXT2_FLAG_RW;
1771                                 break;
1772                 case 'U':
1773                         new_UUID = optarg;
1774                         U_flag = 1;
1775                         open_flag = EXT2_FLAG_RW |
1776                                 EXT2_FLAG_JOURNAL_DEV_OK;
1777                         break;
1778                 case 'I':
1779                         new_inode_size = strtoul(optarg, &tmp, 0);
1780                         if (*tmp) {
1781                                 com_err(program_name, 0,
1782                                         _("bad inode size - %s"),
1783                                         optarg);
1784                                 usage();
1785                         }
1786                         if (!((new_inode_size &
1787                                (new_inode_size - 1)) == 0)) {
1788                                 com_err(program_name, 0,
1789                                         _("Inode size must be a "
1790                                           "power of two- %s"),
1791                                         optarg);
1792                                 usage();
1793                         }
1794                         open_flag = EXT2_FLAG_RW;
1795                         I_flag = 1;
1796                         break;
1797                 case 'z':
1798                         undo_file = optarg;
1799                         break;
1800                 default:
1801                         usage();
1802                 }
1803         if (optind < argc - 1 || optind == argc)
1804                 usage();
1805         if (!open_flag && !l_flag)
1806                 usage();
1807         io_options = strchr(argv[optind], '?');
1808         if (io_options)
1809                 *io_options++ = 0;
1810         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1811         if (!device_name) {
1812                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1813                         argv[optind]);
1814                 exit(1);
1815         }
1816 }
1817
1818 #ifdef CONFIG_BUILD_FINDFS
1819 void do_findfs(int argc, char **argv)
1820 {
1821         char    *dev;
1822
1823         if ((argc != 2) ||
1824             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1825                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1826                 exit(2);
1827         }
1828         dev = blkid_get_devname(NULL, argv[1], NULL);
1829         if (!dev) {
1830                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1831                         argv[1]);
1832                 exit(1);
1833         }
1834         puts(dev);
1835         exit(0);
1836 }
1837 #endif
1838
1839 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1840 {
1841         char    *buf, *token, *next, *p, *arg;
1842         int     len, hash_alg;
1843         int     r_usage = 0;
1844
1845         len = strlen(opts);
1846         buf = malloc(len+1);
1847         if (!buf) {
1848                 fprintf(stderr, "%s",
1849                         _("Couldn't allocate memory to parse options!\n"));
1850                 return 1;
1851         }
1852         strcpy(buf, opts);
1853         for (token = buf; token && *token; token = next) {
1854                 p = strchr(token, ',');
1855                 next = 0;
1856                 if (p) {
1857                         *p = 0;
1858                         next = p+1;
1859                 }
1860                 arg = strchr(token, '=');
1861                 if (arg) {
1862                         *arg = 0;
1863                         arg++;
1864                 }
1865                 if (strcmp(token, "clear-mmp") == 0 ||
1866                     strcmp(token, "clear_mmp") == 0) {
1867                         clear_mmp = 1;
1868                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1869                         unsigned long intv;
1870                         if (!arg) {
1871                                 r_usage++;
1872                                 continue;
1873                         }
1874                         intv = strtoul(arg, &p, 0);
1875                         if (*p) {
1876                                 fprintf(stderr,
1877                                         _("Invalid mmp_update_interval: %s\n"),
1878                                         arg);
1879                                 r_usage++;
1880                                 continue;
1881                         }
1882                         if (intv == 0) {
1883                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1884                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1885                                 fprintf(stderr,
1886                                         _("mmp_update_interval too big: %lu\n"),
1887                                         intv);
1888                                 r_usage++;
1889                                 continue;
1890                         }
1891                         printf(P_("Setting multiple mount protection update "
1892                                   "interval to %lu second\n",
1893                                   "Setting multiple mount protection update "
1894                                   "interval to %lu seconds\n", intv),
1895                                intv);
1896                         fs->super->s_mmp_update_interval = intv;
1897                         ext2fs_mark_super_dirty(fs);
1898                 } else if (!strcmp(token, "test_fs")) {
1899                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1900                         printf("Setting test filesystem flag\n");
1901                         ext2fs_mark_super_dirty(fs);
1902                 } else if (!strcmp(token, "^test_fs")) {
1903                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1904                         printf("Clearing test filesystem flag\n");
1905                         ext2fs_mark_super_dirty(fs);
1906                 } else if (strcmp(token, "stride") == 0) {
1907                         if (!arg) {
1908                                 r_usage++;
1909                                 continue;
1910                         }
1911                         stride = strtoul(arg, &p, 0);
1912                         if (*p) {
1913                                 fprintf(stderr,
1914                                         _("Invalid RAID stride: %s\n"),
1915                                         arg);
1916                                 r_usage++;
1917                                 continue;
1918                         }
1919                         stride_set = 1;
1920                 } else if (strcmp(token, "stripe-width") == 0 ||
1921                            strcmp(token, "stripe_width") == 0) {
1922                         if (!arg) {
1923                                 r_usage++;
1924                                 continue;
1925                         }
1926                         stripe_width = strtoul(arg, &p, 0);
1927                         if (*p) {
1928                                 fprintf(stderr,
1929                                         _("Invalid RAID stripe-width: %s\n"),
1930                                         arg);
1931                                 r_usage++;
1932                                 continue;
1933                         }
1934                         stripe_width_set = 1;
1935                 } else if (strcmp(token, "hash_alg") == 0 ||
1936                            strcmp(token, "hash-alg") == 0) {
1937                         if (!arg) {
1938                                 r_usage++;
1939                                 continue;
1940                         }
1941                         hash_alg = e2p_string2hash(arg);
1942                         if (hash_alg < 0) {
1943                                 fprintf(stderr,
1944                                         _("Invalid hash algorithm: %s\n"),
1945                                         arg);
1946                                 r_usage++;
1947                                 continue;
1948                         }
1949                         fs->super->s_def_hash_version = hash_alg;
1950                         printf(_("Setting default hash algorithm "
1951                                  "to %s (%d)\n"),
1952                                arg, hash_alg);
1953                         ext2fs_mark_super_dirty(fs);
1954                 } else if (!strcmp(token, "mount_opts")) {
1955                         if (!arg) {
1956                                 r_usage++;
1957                                 continue;
1958                         }
1959                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1960                                 fprintf(stderr,
1961                                         "Extended mount options too long\n");
1962                                 continue;
1963                         }
1964                         ext_mount_opts = strdup(arg);
1965                 } else
1966                         r_usage++;
1967         }
1968         if (r_usage) {
1969                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1970                         "Extended options are separated by commas, "
1971                         "and may take an argument which\n"
1972                         "\tis set off by an equals ('=') sign.\n\n"
1973                         "Valid extended options are:\n"
1974                         "\tclear_mmp\n"
1975                         "\thash_alg=<hash algorithm>\n"
1976                         "\tmount_opts=<extended default mount options>\n"
1977                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1978                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1979                         "\ttest_fs\n"
1980                         "\t^test_fs\n"));
1981                 free(buf);
1982                 return 1;
1983         }
1984         free(buf);
1985
1986         return 0;
1987 }
1988
1989 /*
1990  * Fill in the block bitmap bmap with the information regarding the
1991  * blocks to be moved
1992  */
1993 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1994                             ext2fs_block_bitmap bmap)
1995 {
1996         dgrp_t i;
1997         int retval;
1998         ext2_badblocks_list bb_list = 0;
1999         blk64_t j, needed_blocks = 0;
2000         blk64_t start_blk, end_blk;
2001
2002         retval = ext2fs_read_bb_inode(fs, &bb_list);
2003         if (retval)
2004                 return retval;
2005
2006         for (i = 0; i < fs->group_desc_count; i++) {
2007                 start_blk = ext2fs_inode_table_loc(fs, i) +
2008                                         fs->inode_blocks_per_group;
2009
2010                 end_blk = ext2fs_inode_table_loc(fs, i) +
2011                                         new_ino_blks_per_grp;
2012
2013                 for (j = start_blk; j < end_blk; j++) {
2014                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2015                                 /*
2016                                  * IF the block is a bad block we fail
2017                                  */
2018                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2019                                         ext2fs_badblocks_list_free(bb_list);
2020                                         return ENOSPC;
2021                                 }
2022
2023                                 ext2fs_mark_block_bitmap2(bmap, j);
2024                         } else {
2025                                 /*
2026                                  * We are going to use this block for
2027                                  * inode table. So mark them used.
2028                                  */
2029                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2030                         }
2031                 }
2032                 needed_blocks += end_blk - start_blk;
2033         }
2034
2035         ext2fs_badblocks_list_free(bb_list);
2036         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2037                 return ENOSPC;
2038
2039         return 0;
2040 }
2041
2042 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2043 {
2044         dgrp_t group;
2045         group = ext2fs_group_of_blk2(fs, blk);
2046         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2047                 return 1;
2048         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2049                 return 1;
2050         return 0;
2051 }
2052
2053 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2054 {
2055         blk64_t start_blk, end_blk;
2056         start_blk = fs->super->s_first_data_block +
2057                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2058         /*
2059          * We cannot get new block beyond end_blk for for the last block group
2060          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2061          */
2062         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2063         if (blk >= start_blk && blk <= end_blk)
2064                 return 1;
2065         return 0;
2066 }
2067
2068 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2069 {
2070
2071         char *buf;
2072         dgrp_t group = 0;
2073         errcode_t retval;
2074         int meta_data = 0;
2075         blk64_t blk, new_blk, goal;
2076         struct blk_move *bmv;
2077
2078         retval = ext2fs_get_mem(fs->blocksize, &buf);
2079         if (retval)
2080                 return retval;
2081
2082         for (new_blk = blk = fs->super->s_first_data_block;
2083              blk < ext2fs_blocks_count(fs->super); blk++) {
2084                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2085                         continue;
2086
2087                 if (ext2fs_is_meta_block(fs, blk)) {
2088                         /*
2089                          * If the block is mapping a fs meta data block
2090                          * like group desc/block bitmap/inode bitmap. We
2091                          * should find a block in the same group and fix
2092                          * the respective fs metadata pointers. Otherwise
2093                          * fail
2094                          */
2095                         group = ext2fs_group_of_blk2(fs, blk);
2096                         goal = ext2fs_group_first_block2(fs, group);
2097                         meta_data = 1;
2098
2099                 } else {
2100                         goal = new_blk;
2101                 }
2102                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2103                 if (retval)
2104                         goto err_out;
2105
2106                 /* new fs meta data block should be in the same group */
2107                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2108                         retval = ENOSPC;
2109                         goto err_out;
2110                 }
2111
2112                 /* Mark this block as allocated */
2113                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2114
2115                 /* Add it to block move list */
2116                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2117                 if (retval)
2118                         goto err_out;
2119
2120                 bmv->old_loc = blk;
2121                 bmv->new_loc = new_blk;
2122
2123                 list_add(&(bmv->list), &blk_move_list);
2124
2125                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2126                 if (retval)
2127                         goto err_out;
2128
2129                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2130                 if (retval)
2131                         goto err_out;
2132         }
2133
2134 err_out:
2135         ext2fs_free_mem(&buf);
2136         return retval;
2137 }
2138
2139 static blk64_t translate_block(blk64_t blk)
2140 {
2141         struct list_head *entry;
2142         struct blk_move *bmv;
2143
2144         list_for_each(entry, &blk_move_list) {
2145                 bmv = list_entry(entry, struct blk_move, list);
2146                 if (bmv->old_loc == blk)
2147                         return bmv->new_loc;
2148         }
2149
2150         return 0;
2151 }
2152
2153 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2154                          blk64_t *block_nr,
2155                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2156                          blk64_t ref_block EXT2FS_ATTR((unused)),
2157                          int ref_offset EXT2FS_ATTR((unused)),
2158                          void *priv_data)
2159 {
2160         int ret = 0;
2161         blk64_t new_blk;
2162         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2163
2164         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2165                 return 0;
2166         new_blk = translate_block(*block_nr);
2167         if (new_blk) {
2168                 *block_nr = new_blk;
2169                 /*
2170                  * This will force the ext2fs_write_inode in the iterator
2171                  */
2172                 ret |= BLOCK_CHANGED;
2173         }
2174
2175         return ret;
2176 }
2177
2178 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2179 {
2180         errcode_t retval = 0;
2181         ext2_ino_t ino;
2182         blk64_t blk;
2183         char *block_buf = 0;
2184         struct ext2_inode inode;
2185         ext2_inode_scan scan = NULL;
2186
2187         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2188         if (retval)
2189                 return retval;
2190
2191         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2192         if (retval)
2193                 goto err_out;
2194
2195         while (1) {
2196                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2197                 if (retval)
2198                         goto err_out;
2199
2200                 if (!ino)
2201                         break;
2202
2203                 if (inode.i_links_count == 0)
2204                         continue; /* inode not in use */
2205
2206                 /* FIXME!!
2207                  * If we end up modifying the journal inode
2208                  * the sb->s_jnl_blocks will differ. But a
2209                  * subsequent e2fsck fixes that.
2210                  * Do we need to fix this ??
2211                  */
2212
2213                 if (ext2fs_file_acl_block(fs, &inode) &&
2214                     ext2fs_test_block_bitmap2(bmap,
2215                                         ext2fs_file_acl_block(fs, &inode))) {
2216                         blk = translate_block(ext2fs_file_acl_block(fs,
2217                                                                     &inode));
2218                         if (!blk)
2219                                 continue;
2220
2221                         ext2fs_file_acl_block_set(fs, &inode, blk);
2222
2223                         /*
2224                          * Write the inode to disk so that inode table
2225                          * resizing can work
2226                          */
2227                         retval = ext2fs_write_inode(fs, ino, &inode);
2228                         if (retval)
2229                                 goto err_out;
2230                 }
2231
2232                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2233                         continue;
2234
2235                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2236                                                process_block, bmap);
2237                 if (retval)
2238                         goto err_out;
2239
2240         }
2241
2242 err_out:
2243         ext2fs_free_mem(&block_buf);
2244         ext2fs_close_inode_scan(scan);
2245
2246         return retval;
2247 }
2248
2249 /*
2250  * We need to scan for inode and block bitmaps that may need to be
2251  * moved.  This can take place if the filesystem was formatted for
2252  * RAID arrays using the mke2fs's extended option "stride".
2253  */
2254 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2255 {
2256         dgrp_t i;
2257         blk64_t blk, new_blk;
2258
2259         for (i = 0; i < fs->group_desc_count; i++) {
2260                 blk = ext2fs_block_bitmap_loc(fs, i);
2261                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2262                         new_blk = translate_block(blk);
2263                         if (!new_blk)
2264                                 continue;
2265                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2266                 }
2267
2268                 blk = ext2fs_inode_bitmap_loc(fs, i);
2269                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2270                         new_blk = translate_block(blk);
2271                         if (!new_blk)
2272                                 continue;
2273                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2274                 }
2275         }
2276         return 0;
2277 }
2278
2279 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2280 {
2281         dgrp_t i;
2282         blk64_t blk;
2283         errcode_t retval;
2284         int new_ino_blks_per_grp;
2285         unsigned int j;
2286         char *old_itable = NULL, *new_itable = NULL;
2287         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2288         unsigned long old_ino_size;
2289         int old_itable_size, new_itable_size;
2290
2291         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2292         old_ino_size = EXT2_INODE_SIZE(fs->super);
2293
2294         new_ino_blks_per_grp = ext2fs_div_ceil(
2295                                         EXT2_INODES_PER_GROUP(fs->super) *
2296                                         new_ino_size,
2297                                         fs->blocksize);
2298
2299         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2300
2301         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2302         if (retval)
2303                 return retval;
2304
2305         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2306         if (retval)
2307                 goto err_out;
2308
2309         tmp_old_itable = old_itable;
2310         tmp_new_itable = new_itable;
2311
2312         for (i = 0; i < fs->group_desc_count; i++) {
2313                 blk = ext2fs_inode_table_loc(fs, i);
2314                 retval = io_channel_read_blk64(fs->io, blk,
2315                                 fs->inode_blocks_per_group, old_itable);
2316                 if (retval)
2317                         goto err_out;
2318
2319                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2320                         memcpy(new_itable, old_itable, old_ino_size);
2321
2322                         memset(new_itable+old_ino_size, 0,
2323                                         new_ino_size - old_ino_size);
2324
2325                         new_itable += new_ino_size;
2326                         old_itable += old_ino_size;
2327                 }
2328
2329                 /* reset the pointer */
2330                 old_itable = tmp_old_itable;
2331                 new_itable = tmp_new_itable;
2332
2333                 retval = io_channel_write_blk64(fs->io, blk,
2334                                         new_ino_blks_per_grp, new_itable);
2335                 if (retval)
2336                         goto err_out;
2337         }
2338
2339         /* Update the meta data */
2340         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2341         ext2fs_free_inode_cache(fs->icache);
2342         fs->icache = 0;
2343         fs->super->s_inode_size = new_ino_size;
2344
2345 err_out:
2346         if (old_itable)
2347                 ext2fs_free_mem(&old_itable);
2348
2349         if (new_itable)
2350                 ext2fs_free_mem(&new_itable);
2351
2352         return retval;
2353 }
2354
2355 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2356 {
2357         blk64_t         blk;
2358         ext2_ino_t      ino;
2359         unsigned int    group = 0;
2360         unsigned int    count = 0;
2361         int             total_free = 0;
2362         int             group_free = 0;
2363
2364         /*
2365          * First calculate the block statistics
2366          */
2367         for (blk = fs->super->s_first_data_block;
2368              blk < ext2fs_blocks_count(fs->super); blk++) {
2369                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2370                         group_free++;
2371                         total_free++;
2372                 }
2373                 count++;
2374                 if ((count == fs->super->s_blocks_per_group) ||
2375                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2376                         ext2fs_bg_free_blocks_count_set(fs, group++,
2377                                                         group_free);
2378                         count = 0;
2379                         group_free = 0;
2380                 }
2381         }
2382         total_free = EXT2FS_C2B(fs, total_free);
2383         ext2fs_free_blocks_count_set(fs->super, total_free);
2384
2385         /*
2386          * Next, calculate the inode statistics
2387          */
2388         group_free = 0;
2389         total_free = 0;
2390         count = 0;
2391         group = 0;
2392
2393         /* Protect loop from wrap-around if s_inodes_count maxed */
2394         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2395                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2396                         group_free++;
2397                         total_free++;
2398                 }
2399                 count++;
2400                 if ((count == fs->super->s_inodes_per_group) ||
2401                     (ino == fs->super->s_inodes_count)) {
2402                         ext2fs_bg_free_inodes_count_set(fs, group++,
2403                                                         group_free);
2404                         count = 0;
2405                         group_free = 0;
2406                 }
2407         }
2408         fs->super->s_free_inodes_count = total_free;
2409         ext2fs_mark_super_dirty(fs);
2410         return 0;
2411 }
2412
2413 #define list_for_each_safe(pos, pnext, head) \
2414         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2415              pos = pnext, pnext = pos->next)
2416
2417 static void free_blk_move_list(void)
2418 {
2419         struct list_head *entry, *tmp;
2420         struct blk_move *bmv;
2421
2422         list_for_each_safe(entry, tmp, &blk_move_list) {
2423                 bmv = list_entry(entry, struct blk_move, list);
2424                 list_del(entry);
2425                 ext2fs_free_mem(&bmv);
2426         }
2427         return;
2428 }
2429
2430 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2431 {
2432         errcode_t retval;
2433         int new_ino_blks_per_grp;
2434         ext2fs_block_bitmap bmap;
2435
2436         retval = ext2fs_read_inode_bitmap(fs);
2437         if (retval) {
2438                 fputs(_("Failed to read inode bitmap\n"), stderr);
2439                 return retval;
2440         }
2441         retval = ext2fs_read_block_bitmap(fs);
2442         if (retval) {
2443                 fputs(_("Failed to read block bitmap\n"), stderr);
2444                 return retval;
2445         }
2446         INIT_LIST_HEAD(&blk_move_list);
2447
2448
2449         new_ino_blks_per_grp = ext2fs_div_ceil(
2450                                         EXT2_INODES_PER_GROUP(fs->super)*
2451                                         new_size,
2452                                         fs->blocksize);
2453
2454         /* We may change the file system.
2455          * Mark the file system as invalid so that
2456          * the user is prompted to run fsck.
2457          */
2458         fs->super->s_state &= ~EXT2_VALID_FS;
2459
2460         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2461                                                 &bmap);
2462         if (retval) {
2463                 fputs(_("Failed to allocate block bitmap when "
2464                                 "increasing inode size\n"), stderr);
2465                 return retval;
2466         }
2467         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2468         if (retval) {
2469                 fputs(_("Not enough space to increase inode size \n"), stderr);
2470                 goto err_out;
2471         }
2472         retval = move_block(fs, bmap);
2473         if (retval) {
2474                 fputs(_("Failed to relocate blocks during inode resize \n"),
2475                       stderr);
2476                 goto err_out;
2477         }
2478         retval = inode_scan_and_fix(fs, bmap);
2479         if (retval)
2480                 goto err_out_undo;
2481
2482         retval = group_desc_scan_and_fix(fs, bmap);
2483         if (retval)
2484                 goto err_out_undo;
2485
2486         retval = expand_inode_table(fs, new_size);
2487         if (retval)
2488                 goto err_out_undo;
2489
2490         ext2fs_calculate_summary_stats(fs);
2491
2492         fs->super->s_state |= EXT2_VALID_FS;
2493         /* mark super block and block bitmap as dirty */
2494         ext2fs_mark_super_dirty(fs);
2495         ext2fs_mark_bb_dirty(fs);
2496
2497 err_out:
2498         free_blk_move_list();
2499         ext2fs_free_block_bitmap(bmap);
2500
2501         return retval;
2502
2503 err_out_undo:
2504         free_blk_move_list();
2505         ext2fs_free_block_bitmap(bmap);
2506         fputs(_("Error in resizing the inode size.\n"
2507                         "Run e2undo to undo the "
2508                         "file system changes. \n"), stderr);
2509
2510         return retval;
2511 }
2512
2513 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2514 {
2515         errcode_t retval = 0;
2516         const char *tdb_dir;
2517         char *tdb_file = NULL;
2518         char *dev_name, *tmp_name;
2519
2520         /* (re)open a specific undo file */
2521         if (undo_file && undo_file[0] != 0) {
2522                 retval = set_undo_io_backing_manager(*io_ptr);
2523                 if (retval)
2524                         goto err;
2525                 *io_ptr = undo_io_manager;
2526                 retval = set_undo_io_backup_file(undo_file);
2527                 if (retval)
2528                         goto err;
2529                 printf(_("Overwriting existing filesystem; this can be undone "
2530                          "using the command:\n"
2531                          "    e2undo %s %s\n\n"),
2532                          undo_file, name);
2533                 return retval;
2534         }
2535
2536         /*
2537          * Configuration via a conf file would be
2538          * nice
2539          */
2540         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2541         if (!tdb_dir)
2542                 tdb_dir = "/var/lib/e2fsprogs";
2543
2544         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2545             access(tdb_dir, W_OK))
2546                 return 0;
2547
2548         tmp_name = strdup(name);
2549         if (!tmp_name)
2550                 goto errout;
2551         dev_name = basename(tmp_name);
2552         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2553         if (!tdb_file) {
2554                 free(tmp_name);
2555                 goto errout;
2556         }
2557         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2558         free(tmp_name);
2559
2560         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2561                 retval = errno;
2562                 com_err(program_name, retval,
2563                         _("while trying to delete %s"), tdb_file);
2564                 goto errout;
2565         }
2566
2567         retval = set_undo_io_backing_manager(*io_ptr);
2568         if (retval)
2569                 goto errout;
2570         *io_ptr = undo_io_manager;
2571         retval = set_undo_io_backup_file(tdb_file);
2572         if (retval)
2573                 goto errout;
2574         printf(_("Overwriting existing filesystem; this can be undone "
2575                  "using the command:\n"
2576                  "    e2undo %s %s\n\n"),
2577                  tdb_file, name);
2578
2579         free(tdb_file);
2580         return 0;
2581 errout:
2582         free(tdb_file);
2583 err:
2584         com_err("tune2fs", retval, "while trying to setup undo file\n");
2585         return retval;
2586 }
2587
2588 int
2589 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2590 {
2591         int retval, nr_users, start;
2592         journal_superblock_t *jsb;
2593         ext2_filsys jfs;
2594         __u8 *j_uuid;
2595         char *journal_path;
2596         char uuid[UUID_STR_SIZE];
2597         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2598
2599         if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
2600                 uuid_is_null(sb->s_journal_uuid))
2601                 return 0;
2602
2603         uuid_unparse(sb->s_journal_uuid, uuid);
2604         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2605         if (!journal_path)
2606                 return 0;
2607
2608         retval = ext2fs_open2(journal_path, io_options,
2609                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2610                               0, 0, unix_io_manager, &jfs);
2611         if (retval) {
2612                 com_err(program_name, retval,
2613                         _("while trying to open %s"),
2614                         journal_path);
2615                 return retval;
2616         }
2617
2618         retval = get_journal_sb(jfs, buf);
2619         if (retval != 0) {
2620                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2621                         fprintf(stderr, _("%s is not a journal device.\n"),
2622                                 journal_path);
2623                 return retval;
2624         }
2625
2626         jsb = (journal_superblock_t *) buf;
2627         /* Find the filesystem UUID */
2628         nr_users = ntohl(jsb->s_nr_users);
2629
2630         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2631         if (j_uuid == NULL) {
2632                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2633                       stderr);
2634                 return EXT2_ET_LOAD_EXT_JOURNAL;
2635         }
2636
2637         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2638
2639         start = ext2fs_journal_sb_start(jfs->blocksize);
2640         /* Write back the journal superblock */
2641         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2642         if (retval != 0) {
2643                 com_err(program_name, retval,
2644                         "while writing journal superblock.");
2645                 return retval;
2646         }
2647
2648         ext2fs_close(jfs);
2649
2650         return 0;
2651 }
2652
2653 int main(int argc, char **argv)
2654 {
2655         errcode_t retval;
2656         ext2_filsys fs;
2657         struct ext2_super_block *sb;
2658         io_manager io_ptr, io_ptr_orig = NULL;
2659         int rc = 0;
2660
2661 #ifdef ENABLE_NLS
2662         setlocale(LC_MESSAGES, "");
2663         setlocale(LC_CTYPE, "");
2664         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2665         textdomain(NLS_CAT_NAME);
2666         set_com_err_gettext(gettext);
2667 #endif
2668         if (argc && *argv)
2669                 program_name = *argv;
2670         add_error_table(&et_ext2_error_table);
2671
2672 #ifdef CONFIG_BUILD_FINDFS
2673         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2674                 do_findfs(argc, argv);
2675 #endif
2676         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2677                 parse_e2label_options(argc, argv);
2678         else
2679                 parse_tune2fs_options(argc, argv);
2680
2681 #ifdef CONFIG_TESTIO_DEBUG
2682         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2683                 io_ptr = test_io_manager;
2684                 test_io_backing_manager = unix_io_manager;
2685         } else
2686 #endif
2687                 io_ptr = unix_io_manager;
2688
2689 retry_open:
2690         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2691                 open_flag |= EXT2_FLAG_SKIP_MMP;
2692
2693         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2694
2695         /* keep the filesystem struct around to dump MMP data */
2696         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2697
2698         retval = ext2fs_open2(device_name, io_options, open_flag,
2699                               0, 0, io_ptr, &fs);
2700         if (retval) {
2701                 com_err(program_name, retval,
2702                         _("while trying to open %s"),
2703                         device_name);
2704                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2705                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2706                         dump_mmp_msg(fs->mmp_buf,
2707                                      _("If you are sure the filesystem "
2708                                        "is not in use on any node, run:\n"
2709                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2710                 else if (retval == EXT2_ET_MMP_FAILED)
2711                         dump_mmp_msg(fs->mmp_buf, NULL);
2712                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2713                         fprintf(stderr,
2714                                 _("MMP block magic is bad. Try to fix it by "
2715                                   "running:\n'e2fsck -f %s'\n"), device_name);
2716                 else if (retval == EXT2_ET_BAD_MAGIC)
2717                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2718                 else if (retval != EXT2_ET_MMP_FAILED)
2719                         fprintf(stderr, "%s",
2720                              _("Couldn't find valid filesystem superblock.\n"));
2721
2722                 ext2fs_free(fs);
2723                 exit(1);
2724         }
2725         if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
2726                                       EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
2727                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2728                 ext2fs_free(fs);
2729                 exit(1);
2730         }
2731         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2732
2733         if (I_flag) {
2734                 /*
2735                  * Check the inode size is right so we can issue an
2736                  * error message and bail before setting up the tdb
2737                  * file.
2738                  */
2739                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2740                         fprintf(stderr, _("The inode size is already %lu\n"),
2741                                 new_inode_size);
2742                         rc = 1;
2743                         goto closefs;
2744                 }
2745                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2746                         fprintf(stderr, "%s",
2747                                 _("Shrinking inode size is not supported\n"));
2748                         rc = 1;
2749                         goto closefs;
2750                 }
2751                 if (new_inode_size > fs->blocksize) {
2752                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2753                                 new_inode_size, fs->blocksize);
2754                         rc = 1;
2755                         goto closefs;
2756                 }
2757                 /*
2758                  * If inode resize is requested use the
2759                  * Undo I/O manager
2760                  */
2761                 undo_file = "";
2762         }
2763
2764         /* Set up an undo file */
2765         if (undo_file && io_ptr_orig == NULL) {
2766                 io_ptr_orig = io_ptr;
2767                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2768                 if (retval) {
2769                         rc = 1;
2770                         goto closefs;
2771                 }
2772                 if (io_ptr != io_ptr_orig) {
2773                         ext2fs_close_free(&fs);
2774                         goto retry_open;
2775                 }
2776         }
2777
2778         sb = fs->super;
2779         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2780
2781         if (print_label) {
2782                 /* For e2label emulation */
2783                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2784                        sb->s_volume_name);
2785                 remove_error_table(&et_ext2_error_table);
2786                 goto closefs;
2787         }
2788
2789         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2790         if (retval) {
2791                 com_err("ext2fs_check_if_mount", retval,
2792                         _("while determining whether %s is mounted."),
2793                         device_name);
2794                 rc = 1;
2795                 goto closefs;
2796         }
2797         /* Normally we only need to write out the superblock */
2798         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2799
2800         if (c_flag) {
2801                 sb->s_max_mnt_count = max_mount_count;
2802                 ext2fs_mark_super_dirty(fs);
2803                 printf(_("Setting maximal mount count to %d\n"),
2804                        max_mount_count);
2805         }
2806         if (C_flag) {
2807                 sb->s_mnt_count = mount_count;
2808                 ext2fs_mark_super_dirty(fs);
2809                 printf(_("Setting current mount count to %d\n"), mount_count);
2810         }
2811         if (e_flag) {
2812                 sb->s_errors = errors;
2813                 ext2fs_mark_super_dirty(fs);
2814                 printf(_("Setting error behavior to %d\n"), errors);
2815         }
2816         if (g_flag) {
2817                 sb->s_def_resgid = resgid;
2818                 ext2fs_mark_super_dirty(fs);
2819                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2820         }
2821         if (i_flag) {
2822                 if ((unsigned long long)interval >= (1ULL << 32)) {
2823                         com_err(program_name, 0,
2824                                 _("interval between checks is too big (%lu)"),
2825                                 interval);
2826                         rc = 1;
2827                         goto closefs;
2828                 }
2829                 sb->s_checkinterval = interval;
2830                 ext2fs_mark_super_dirty(fs);
2831                 printf(_("Setting interval between checks to %lu seconds\n"),
2832                        interval);
2833         }
2834         if (m_flag) {
2835                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2836                                           ext2fs_blocks_count(sb) / 100.0);
2837                 ext2fs_mark_super_dirty(fs);
2838                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2839                         reserved_ratio, ext2fs_r_blocks_count(sb));
2840         }
2841         if (r_flag) {
2842                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2843                         com_err(program_name, 0,
2844                                 _("reserved blocks count is too big (%llu)"),
2845                                 reserved_blocks);
2846                         rc = 1;
2847                         goto closefs;
2848                 }
2849                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2850                 ext2fs_mark_super_dirty(fs);
2851                 printf(_("Setting reserved blocks count to %llu\n"),
2852                        reserved_blocks);
2853         }
2854         if (s_flag == 1) {
2855                 if (sb->s_feature_ro_compat &
2856                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
2857                         fputs(_("\nThe filesystem already has sparse "
2858                                 "superblocks.\n"), stderr);
2859                 } else if (sb->s_feature_incompat &
2860                         EXT2_FEATURE_INCOMPAT_META_BG) {
2861                         fputs(_("\nSetting the sparse superblock flag not "
2862                                 "supported\nfor filesystems with "
2863                                 "the meta_bg feature enabled.\n"),
2864                                 stderr);
2865                         rc = 1;
2866                         goto closefs;
2867                 } else {
2868                         sb->s_feature_ro_compat |=
2869                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2870                         sb->s_state &= ~EXT2_VALID_FS;
2871                         ext2fs_mark_super_dirty(fs);
2872                         printf(_("\nSparse superblock flag set.  %s"),
2873                                _(please_fsck));
2874                 }
2875         }
2876         if (s_flag == 0) {
2877                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2878                       stderr);
2879                 rc = 1;
2880                 goto closefs;
2881         }
2882         if (T_flag) {
2883                 sb->s_lastcheck = last_check_time;
2884                 ext2fs_mark_super_dirty(fs);
2885                 printf(_("Setting time filesystem last checked to %s\n"),
2886                        ctime(&last_check_time));
2887         }
2888         if (u_flag) {
2889                 sb->s_def_resuid = resuid;
2890                 ext2fs_mark_super_dirty(fs);
2891                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2892         }
2893         if (L_flag) {
2894                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2895                         fputs(_("Warning: label too long, truncating.\n"),
2896                               stderr);
2897                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2898                 strncpy(sb->s_volume_name, new_label,
2899                         sizeof(sb->s_volume_name));
2900                 ext2fs_mark_super_dirty(fs);
2901         }
2902         if (M_flag) {
2903                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2904                 strncpy(sb->s_last_mounted, new_last_mounted,
2905                         sizeof(sb->s_last_mounted));
2906                 ext2fs_mark_super_dirty(fs);
2907         }
2908         if (mntopts_cmd) {
2909                 rc = update_mntopts(fs, mntopts_cmd);
2910                 if (rc)
2911                         goto closefs;
2912         }
2913         if (features_cmd) {
2914                 rc = update_feature_set(fs, features_cmd);
2915                 if (rc)
2916                         goto closefs;
2917         }
2918         if (extended_cmd) {
2919                 rc = parse_extended_opts(fs, extended_cmd);
2920                 if (rc)
2921                         goto closefs;
2922                 if (clear_mmp && !f_flag) {
2923                         fputs(_("Error in using clear_mmp. "
2924                                 "It must be used with -f\n"),
2925                               stderr);
2926                         goto closefs;
2927                 }
2928         }
2929         if (clear_mmp) {
2930                 rc = ext2fs_mmp_clear(fs);
2931                 goto closefs;
2932         }
2933         if (journal_size || journal_device) {
2934                 rc = add_journal(fs);
2935                 if (rc)
2936                         goto closefs;
2937         }
2938
2939         if (Q_flag) {
2940                 if (mount_flags & EXT2_MF_MOUNTED) {
2941                         fputs(_("The quota feature may only be changed when "
2942                                 "the filesystem is unmounted.\n"), stderr);
2943                         rc = 1;
2944                         goto closefs;
2945                 }
2946                 handle_quota_options(fs);
2947         }
2948
2949         if (U_flag) {
2950                 int set_csum = 0;
2951                 dgrp_t i;
2952                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2953                 __u8 old_uuid[UUID_SIZE];
2954
2955                 if (ext2fs_has_group_desc_csum(fs)) {
2956                         /*
2957                          * Changing the UUID requires rewriting all metadata,
2958                          * which can race with a mounted fs.  Don't allow that.
2959                          */
2960                         if (mount_flags & EXT2_MF_MOUNTED) {
2961                                 fputs(_("The UUID may only be "
2962                                         "changed when the filesystem is "
2963                                         "unmounted.\n"), stderr);
2964                                 exit(1);
2965                         }
2966                         if (check_fsck_needed(fs))
2967                                 exit(1);
2968
2969                         /*
2970                          * Determine if the block group checksums are
2971                          * correct so we know whether or not to set
2972                          * them later on.
2973                          */
2974                         for (i = 0; i < fs->group_desc_count; i++)
2975                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2976                                         break;
2977                         if (i >= fs->group_desc_count)
2978                                 set_csum = 1;
2979                 }
2980
2981                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
2982                 if ((strcasecmp(new_UUID, "null") == 0) ||
2983                     (strcasecmp(new_UUID, "clear") == 0)) {
2984                         uuid_clear(sb->s_uuid);
2985                 } else if (strcasecmp(new_UUID, "time") == 0) {
2986                         uuid_generate_time(sb->s_uuid);
2987                 } else if (strcasecmp(new_UUID, "random") == 0) {
2988                         uuid_generate(sb->s_uuid);
2989                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2990                         com_err(program_name, 0, "%s",
2991                                 _("Invalid UUID format\n"));
2992                         rc = 1;
2993                         goto closefs;
2994                 }
2995                 ext2fs_init_csum_seed(fs);
2996                 if (set_csum) {
2997                         for (i = 0; i < fs->group_desc_count; i++)
2998                                 ext2fs_group_desc_csum_set(fs, i);
2999                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3000                 }
3001
3002                 /* If this is a journal dev, we need to copy UUID into jsb */
3003                 if (!(rc = get_journal_sb(fs, buf))) {
3004                         journal_superblock_t *jsb;
3005
3006                         jsb = (journal_superblock_t *) buf;
3007                         fputs(_("Need to update journal superblock.\n"), stdout);
3008                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3009
3010                         /* Writeback the journal superblock */
3011                         if ((rc = io_channel_write_blk64(fs->io,
3012                                 ext2fs_journal_sb_start(fs->blocksize),
3013                                         -SUPERBLOCK_SIZE, buf)))
3014                                 goto closefs;
3015                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3016                         goto closefs;
3017                 else {
3018                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3019
3020                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3021                                 goto closefs;
3022                 }
3023
3024                 ext2fs_mark_super_dirty(fs);
3025                 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
3026                                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
3027                         rewrite_checksums = 1;
3028         }
3029
3030         if (I_flag) {
3031                 if (mount_flags & EXT2_MF_MOUNTED) {
3032                         fputs(_("The inode size may only be "
3033                                 "changed when the filesystem is "
3034                                 "unmounted.\n"), stderr);
3035                         rc = 1;
3036                         goto closefs;
3037                 }
3038                 if (fs->super->s_feature_incompat &
3039                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
3040                         fputs(_("Changing the inode size not supported for "
3041                                 "filesystems with the flex_bg\n"
3042                                 "feature enabled.\n"),
3043                               stderr);
3044                         rc = 1;
3045                         goto closefs;
3046                 }
3047                 /*
3048                  * We want to update group descriptor also
3049                  * with the new free inode count
3050                  */
3051                 if (rewrite_checksums)
3052                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3053                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3054                 retval = resize_inode(fs, new_inode_size);
3055                 if (rewrite_checksums)
3056                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3057                 if (retval == 0) {
3058                         printf(_("Setting inode size %lu\n"),
3059                                                         new_inode_size);
3060                         rewrite_checksums = 1;
3061                 } else {
3062                         printf("%s", _("Failed to change inode size\n"));
3063                         rc = 1;
3064                         goto closefs;
3065                 }
3066         }
3067
3068         if (rewrite_checksums)
3069                 rewrite_metadata_checksums(fs);
3070
3071         if (l_flag)
3072                 list_super(sb);
3073         if (stride_set) {
3074                 sb->s_raid_stride = stride;
3075                 ext2fs_mark_super_dirty(fs);
3076                 printf(_("Setting stride size to %d\n"), stride);
3077         }
3078         if (stripe_width_set) {
3079                 sb->s_raid_stripe_width = stripe_width;
3080                 ext2fs_mark_super_dirty(fs);
3081                 printf(_("Setting stripe width to %d\n"), stripe_width);
3082         }
3083         if (ext_mount_opts) {
3084                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3085                         sizeof(fs->super->s_mount_opts));
3086                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3087                 ext2fs_mark_super_dirty(fs);
3088                 printf(_("Setting extended default mount options to '%s'\n"),
3089                        ext_mount_opts);
3090                 free(ext_mount_opts);
3091         }
3092         free(device_name);
3093         remove_error_table(&et_ext2_error_table);
3094
3095 closefs:
3096         if (rc) {
3097                 ext2fs_mmp_stop(fs);
3098                 exit(1);
3099         }
3100
3101         convert_64bit(fs, feature_64bit);
3102         return (ext2fs_close_free(&fs) ? 1 : 0);
3103 }