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 #define _DEFAULT_SOURCE   /* since glibc 2.20 _BSD_SOURCE is deprecated */
  48 #endif
  49 #include <string.h>
  50 #include <time.h>
  51 #include <unistd.h>
  52 #include <sys/types.h>
  53 #include <libgen.h>
  54 #include <limits.h>
  55
  56 #include "ext2fs/ext2_fs.h"
  57 #include "ext2fs/ext2fs.h"
  58 #include "ext2fs/kernel-jbd.h"
  59 #include "et/com_err.h"
  60 #include "support/plausible.h"
  61 #include "support/quotaio.h"
  62 #include "uuid/uuid.h"
  63 #include "e2p/e2p.h"
  64 #include "util.h"
  65 #include "blkid/blkid.h"
  66
  67 #include "../version.h"
  68 #include "support/nls-enable.h"
  69
  70 #define QOPT_ENABLE     (1)
  71 #define QOPT_DISABLE    (-1)
  72
  73 extern int ask_yn(const char *string, int def);
  74
  75 const char *program_name = "tune2fs";
  76 char *device_name;
  77 char *new_label, *new_last_mounted, *new_UUID;
  78 char *io_options;
  79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  81 static int I_flag;
  82 static int clear_mmp;
  83 static time_t last_check_time;
  84 static int print_label;
  85 static int max_mount_count, mount_count, mount_flags;
  86 static unsigned long interval;
  87 static blk64_t reserved_blocks;
  88 static double reserved_ratio;
  89 static unsigned long resgid, resuid;
  90 static unsigned short errors;
  91 static int open_flag;
  92 static char *features_cmd;
  93 static char *mntopts_cmd;
  94 static int stride, stripe_width;
  95 static int stride_set, stripe_width_set;
  96 static char *extended_cmd;
  97 static unsigned long new_inode_size;
  98 static char *ext_mount_opts;
  99 static int quota_enable[MAXQUOTAS];
 100 static int rewrite_checksums;
 101 static int feature_64bit;
 102 static int fsck_requested;
 103 static char *undo_file;
 104
 105 int journal_size, journal_flags;
 106 char *journal_device;
 107 static blk64_t journal_location = ~0LL;
 108
 109 static struct list_head blk_move_list;
 110
 111 struct blk_move {
 112         struct list_head list;
 113         blk64_t old_loc;
 114         blk64_t new_loc;
 115 };
 116
 117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
 118
 119 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
 120 static const char *please_dir_fsck =
 121                 N_("Please run e2fsck -fD on the filesystem.\n");
 122
 123 #ifdef CONFIG_BUILD_FINDFS
 124 void do_findfs(int argc, char **argv);
 125 #endif
 126
 127 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
 128 int journal_enable_debug = -1;
 129 #endif
 130
 131 static void usage(void)
 132 {
 133         fprintf(stderr,
 134                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
 135                   "[-g group]\n"
 136                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 137                   "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
 138                   "\t[-p mmp_update_interval] [-r reserved_blocks_count] "
 139                   "[-u user]\n"
 140                   "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n"
 141                   "\t[-O [^]feature[,...]] [-Q quota_options]\n"
 142                   "\t[-E extended-option[,...]] [-T last_check_time] "
 143                   "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
 144                 program_name);
 145         exit(1);
 146 }
 147
 148 static __u32 ok_features[3] = {
 149         /* Compat */
 150         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 151                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 152         /* Incompat */
 153         EXT2_FEATURE_INCOMPAT_FILETYPE |
 154                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 155                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 156                 EXT4_FEATURE_INCOMPAT_MMP |
 157                 EXT4_FEATURE_INCOMPAT_64BIT |
 158                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 159                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 160                 EXT4_FEATURE_INCOMPAT_LARGEDIR,
 161         /* R/O compat */
 162         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 163                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 164                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 165                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 166                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 167                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 168                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 169                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 170                 EXT4_FEATURE_RO_COMPAT_READONLY |
 171                 EXT4_FEATURE_RO_COMPAT_PROJECT
 172 };
 173
 174 static __u32 clear_ok_features[3] = {
 175         /* Compat */
 176         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 177                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 178                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 179         /* Incompat */
 180         EXT2_FEATURE_INCOMPAT_FILETYPE |
 181                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 182                 EXT4_FEATURE_INCOMPAT_MMP |
 183                 EXT4_FEATURE_INCOMPAT_64BIT |
 184                 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
 185         /* R/O compat */
 186         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 187                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 188                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 189                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 190                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 191                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 192                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 193                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 194                 EXT4_FEATURE_RO_COMPAT_READONLY
 195 };
 196
 197 /**
 198  * Try to get journal super block if any
 199  */
 200 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 201 {
 202         int retval;
 203         journal_superblock_t *jsb;
 204
 205         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 206                 return EXT2_ET_UNSUPP_FEATURE;
 207         }
 208
 209         /* Get the journal superblock */
 210         if ((retval = io_channel_read_blk64(jfs->io,
 211             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 212                 com_err(program_name, retval, "%s",
 213                 _("while reading journal superblock"));
 214                 return retval;
 215         }
 216
 217         jsb = (journal_superblock_t *) buf;
 218         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 219             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 220                 fputs(_("Journal superblock not found!\n"), stderr);
 221                 return EXT2_ET_BAD_MAGIC;
 222         }
 223
 224         return 0;
 225 }
 226
 227 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
 228                           int nr_users)
 229 {
 230         int i;
 231         for (i = 0; i < nr_users; i++) {
 232                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 233                         return &s_users[i * UUID_SIZE];
 234         }
 235
 236         return NULL;
 237 }
 238
 239 /*
 240  * Remove an external journal from the filesystem
 241  */
 242 static int remove_journal_device(ext2_filsys fs)
 243 {
 244         char            *journal_path;
 245         ext2_filsys     jfs;
 246         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 247         journal_superblock_t    *jsb;
 248         int             i, nr_users;
 249         errcode_t       retval;
 250         int             commit_remove_journal = 0;
 251         io_manager      io_ptr;
 252
 253         if (f_flag)
 254                 commit_remove_journal = 1; /* force removal even if error */
 255
 256         uuid_unparse(fs->super->s_journal_uuid, buf);
 257         journal_path = blkid_get_devname(NULL, "UUID", buf);
 258
 259         if (!journal_path) {
 260                 journal_path =
 261                         ext2fs_find_block_device(fs->super->s_journal_dev);
 262                 if (!journal_path)
 263                         goto no_valid_journal;
 264         }
 265
 266 #ifdef CONFIG_TESTIO_DEBUG
 267         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 268                 io_ptr = test_io_manager;
 269                 test_io_backing_manager = unix_io_manager;
 270         } else
 271 #endif
 272                 io_ptr = unix_io_manager;
 273         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 274                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 275                              fs->blocksize, io_ptr, &jfs);
 276         if (retval) {
 277                 com_err(program_name, retval, "%s",
 278                         _("while trying to open external journal"));
 279                 goto no_valid_journal;
 280         }
 281
 282         if ((retval = get_journal_sb(jfs, buf))) {
 283                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 284                         fprintf(stderr, _("%s is not a journal device.\n"),
 285                                 journal_path);
 286                 goto no_valid_journal;
 287         }
 288
 289         jsb = (journal_superblock_t *) buf;
 290         /* Find the filesystem UUID */
 291         nr_users = ntohl(jsb->s_nr_users);
 292
 293         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 294                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 295                       stderr);
 296                 commit_remove_journal = 1;
 297                 goto no_valid_journal;
 298         }
 299         nr_users--;
 300         for (i = 0; i < nr_users; i++)
 301                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 302         jsb->s_nr_users = htonl(nr_users);
 303
 304         /* Write back the journal superblock */
 305         retval = io_channel_write_blk64(jfs->io,
 306                                         ext2fs_journal_sb_start(fs->blocksize),
 307                                         -SUPERBLOCK_SIZE, buf);
 308         if (retval) {
 309                 com_err(program_name, retval,
 310                         "while writing journal superblock.");
 311                 goto no_valid_journal;
 312         }
 313
 314         commit_remove_journal = 1;
 315
 316 no_valid_journal:
 317         if (commit_remove_journal == 0) {
 318                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 319                         "Use -f option to remove missing journal device.\n"),
 320                       stderr);
 321                 return 1;
 322         }
 323         fs->super->s_journal_dev = 0;
 324         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 325         uuid_clear(fs->super->s_journal_uuid);
 326         ext2fs_mark_super_dirty(fs);
 327         fputs(_("Journal removed\n"), stdout);
 328         free(journal_path);
 329
 330         return 0;
 331 }
 332
 333 /* Helper function for remove_journal_inode */
 334 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 335                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 336                                blk64_t ref_block EXT2FS_ATTR((unused)),
 337                                int ref_offset EXT2FS_ATTR((unused)),
 338                                void *private EXT2FS_ATTR((unused)))
 339 {
 340         blk64_t block;
 341         int     group;
 342
 343         block = *blocknr;
 344         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 345         group = ext2fs_group_of_blk2(fs, block);
 346         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 347         ext2fs_group_desc_csum_set(fs, group);
 348         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 349         return 0;
 350 }
 351
 352 /*
 353  * Remove the journal inode from the filesystem
 354  */
 355 static errcode_t remove_journal_inode(ext2_filsys fs)
 356 {
 357         struct ext2_inode       inode;
 358         errcode_t               retval;
 359         ino_t                   ino = fs->super->s_journal_inum;
 360
 361         retval = ext2fs_read_inode(fs, ino,  &inode);
 362         if (retval) {
 363                 com_err(program_name, retval, "%s",
 364                         _("while reading journal inode"));
 365                 return retval;
 366         }
 367         if (ino == EXT2_JOURNAL_INO) {
 368                 retval = ext2fs_read_bitmaps(fs);
 369                 if (retval) {
 370                         com_err(program_name, retval, "%s",
 371                                 _("while reading bitmaps"));
 372                         return retval;
 373                 }
 374                 retval = ext2fs_block_iterate3(fs, ino,
 375                                                BLOCK_FLAG_READ_ONLY, NULL,
 376                                                release_blocks_proc, NULL);
 377                 if (retval) {
 378                         com_err(program_name, retval, "%s",
 379                                 _("while clearing journal inode"));
 380                         return retval;
 381                 }
 382                 memset(&inode, 0, sizeof(inode));
 383                 ext2fs_mark_bb_dirty(fs);
 384                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 385         } else
 386                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 387         retval = ext2fs_write_inode(fs, ino, &inode);
 388         if (retval) {
 389                 com_err(program_name, retval, "%s",
 390                         _("while writing journal inode"));
 391                 return retval;
 392         }
 393         fs->super->s_journal_inum = 0;
 394         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 395         ext2fs_mark_super_dirty(fs);
 396
 397         return 0;
 398 }
 399
 400 /*
 401  * Update the default mount options
 402  */
 403 static int update_mntopts(ext2_filsys fs, char *mntopts)
 404 {
 405         struct ext2_super_block *sb = fs->super;
 406
 407         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 408                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 409                         mntopts);
 410                 return 1;
 411         }
 412         ext2fs_mark_super_dirty(fs);
 413
 414         return 0;
 415 }
 416
 417 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
 418 {
 419         /* Refuse to modify anything but a freshly checked valid filesystem. */
 420         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 421             (fs->super->s_state & EXT2_ERROR_FS) ||
 422             (fs->super->s_lastcheck < fs->super->s_mtime)) {
 423                 printf("\n%s\n", _(please_fsck));
 424                 if (mount_flags & EXT2_MF_READONLY)
 425                         printf("%s", _("(and reboot afterwards!)\n"));
 426                 exit(1);
 427         }
 428
 429         /* Give the admin a few seconds to bail out of a dangerous op. */
 430         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 431                 return;
 432
 433         puts(prompt);
 434         proceed_question(5);
 435 }
 436
 437 static void request_dir_fsck_afterwards(ext2_filsys fs)
 438 {
 439         static int requested;
 440
 441         if (requested++)
 442                 return;
 443         fsck_requested++;
 444         fs->super->s_state &= ~EXT2_VALID_FS;
 445         printf("\n%s\n", _(please_dir_fsck));
 446         if (mount_flags & EXT2_MF_READONLY)
 447                 printf("%s", _("(and reboot afterwards!)\n"));
 448 }
 449
 450 static void request_fsck_afterwards(ext2_filsys fs)
 451 {
 452         static int requested = 0;
 453
 454         if (requested++)
 455                 return;
 456         fsck_requested++;
 457         fs->super->s_state &= ~EXT2_VALID_FS;
 458         printf("\n%s\n", _(please_fsck));
 459         if (mount_flags & EXT2_MF_READONLY)
 460                 printf("%s", _("(and reboot afterwards!)\n"));
 461 }
 462
 463 static void convert_64bit(ext2_filsys fs, int direction)
 464 {
 465         if (!direction)
 466                 return;
 467
 468         /*
 469          * Is resize2fs going to demand a fsck run? Might as well tell the
 470          * user now.
 471          */
 472         if (!fsck_requested &&
 473             ((fs->super->s_state & EXT2_ERROR_FS) ||
 474              !(fs->super->s_state & EXT2_VALID_FS) ||
 475              fs->super->s_lastcheck < fs->super->s_mtime))
 476                 request_fsck_afterwards(fs);
 477         if (fsck_requested)
 478                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 479                         direction > 0 ? "-b" : "-s", fs->device_name);
 480         else
 481                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 482                         direction > 0 ? "-b" : "-s", fs->device_name);
 483
 484         if (undo_file)
 485                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 486         if (direction > 0)
 487                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 488         else
 489                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 490 }
 491
 492 /* Rewrite extents */
 493 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
 494                                  struct ext2_inode *inode)
 495 {
 496         ext2_extent_handle_t    handle;
 497         struct ext2fs_extent    extent;
 498         errcode_t               errcode;
 499         struct ext2_extent_info info;
 500
 501         if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
 502             !ext2fs_has_feature_metadata_csum(fs->super))
 503                 return 0;
 504
 505         errcode = ext2fs_extent_open(fs, ino, &handle);
 506         if (errcode)
 507                 return errcode;
 508
 509         errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
 510         if (errcode)
 511                 goto out;
 512
 513         do {
 514                 errcode = ext2fs_extent_get_info(handle, &info);
 515                 if (errcode)
 516                         break;
 517
 518                 /*
 519                  * If this is the first extent in an extent block that we
 520                  * haven't visited, rewrite the extent to force the ETB
 521                  * checksum to be rewritten.
 522                  */
 523                 if (info.curr_entry == 1 && info.curr_level != 0 &&
 524                     !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
 525                         errcode = ext2fs_extent_replace(handle, 0, &extent);
 526                         if (errcode)
 527                                 break;
 528                 }
 529
 530                 /* Skip to the end of a block of leaf nodes */
 531                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 532                         errcode = ext2fs_extent_get(handle,
 533                                                     EXT2_EXTENT_LAST_SIB,
 534                                                     &extent);
 535                         if (errcode)
 536                                 break;
 537                 }
 538
 539                 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
 540         } while (errcode == 0);
 541
 542 out:
 543         /* Ok if we run off the end */
 544         if (errcode == EXT2_ET_EXTENT_NO_NEXT)
 545                 errcode = 0;
 546         ext2fs_extent_free(handle);
 547         return errcode;
 548 }
 549
 550 /*
 551  * Rewrite directory blocks with checksums
 552  */
 553 struct rewrite_dir_context {
 554         char *buf;
 555         errcode_t errcode;
 556         ext2_ino_t dir;
 557         int is_htree;
 558 };
 559
 560 static int rewrite_dir_block(ext2_filsys fs,
 561                              blk64_t    *blocknr,
 562                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 563                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 564                              int        ref_offset EXT2FS_ATTR((unused)),
 565                              void       *priv_data)
 566 {
 567         struct ext2_dx_countlimit *dcl = NULL;
 568         struct rewrite_dir_context *ctx = priv_data;
 569         int dcl_offset, changed = 0;
 570
 571         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 572                                               ctx->dir);
 573         if (ctx->errcode)
 574                 return BLOCK_ABORT;
 575
 576         /* if htree node... */
 577         if (ctx->is_htree)
 578                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 579                                          &dcl, &dcl_offset);
 580         if (dcl) {
 581                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 582                         /* Ensure limit is the max size */
 583                         int max_entries = (fs->blocksize - dcl_offset) /
 584                                           sizeof(struct ext2_dx_entry);
 585                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 586                                 changed = 1;
 587                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 588                         }
 589                 } else {
 590                         /* If htree block is full then rebuild the dir */
 591                         if (ext2fs_le16_to_cpu(dcl->count) ==
 592                             ext2fs_le16_to_cpu(dcl->limit)) {
 593                                 request_dir_fsck_afterwards(fs);
 594                                 return 0;
 595                         }
 596                         /*
 597                          * Ensure dcl->limit is small enough to leave room for
 598                          * the checksum tail.
 599                          */
 600                         int max_entries = (fs->blocksize - (dcl_offset +
 601                                                 sizeof(struct ext2_dx_tail))) /
 602                                           sizeof(struct ext2_dx_entry);
 603                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 604                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 605                         /* Always rewrite checksum */
 606                         changed = 1;
 607                 }
 608         } else {
 609                 unsigned int rec_len, name_size;
 610                 char *top = ctx->buf + fs->blocksize;
 611                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 612                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 613
 614                 /* Find last and penultimate dirent */
 615                 while ((char *)de < top) {
 616                         penultimate_de = last_de;
 617                         last_de = de;
 618                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 619                         if (!ctx->errcode && !rec_len)
 620                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 621                         if (ctx->errcode)
 622                                 return BLOCK_ABORT;
 623                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 624                 }
 625                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 626                 if (ctx->errcode)
 627                         return BLOCK_ABORT;
 628                 name_size = ext2fs_dirent_name_len(last_de);
 629
 630                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 631                         if (!penultimate_de)
 632                                 return 0;
 633                         if (last_de->inode ||
 634                             name_size ||
 635                             rec_len != sizeof(struct ext2_dir_entry_tail))
 636                                 return 0;
 637                         /*
 638                          * The last dirent is unused and the right length to
 639                          * have stored a checksum.  Erase it.
 640                          */
 641                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 642                                                           &rec_len);
 643                         if (!rec_len)
 644                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 645                         if (ctx->errcode)
 646                                 return BLOCK_ABORT;
 647                         ext2fs_set_rec_len(fs, rec_len +
 648                                         sizeof(struct ext2_dir_entry_tail),
 649                                         penultimate_de);
 650                         changed = 1;
 651                 } else {
 652                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 653                         struct ext2_dir_entry_tail *t;
 654
 655                         /*
 656                          * If the last dirent looks like the tail, just update
 657                          * the checksum.
 658                          */
 659                         if (!last_de->inode &&
 660                             rec_len == csum_size) {
 661                                 t = (struct ext2_dir_entry_tail *)last_de;
 662                                 t->det_reserved_name_len =
 663                                                 EXT2_DIR_NAME_LEN_CSUM;
 664                                 changed = 1;
 665                                 goto out;
 666                         }
 667                         if (name_size & 3)
 668                                 name_size = (name_size & ~3) + 4;
 669                         /* If there's not enough space for the tail, e2fsck */
 670                         if (rec_len <= (8 + name_size + csum_size)) {
 671                                 request_dir_fsck_afterwards(fs);
 672                                 return 0;
 673                         }
 674                         /* Shorten that last de and insert the tail */
 675                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 676                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 677                         ext2fs_initialize_dirent_tail(fs, t);
 678
 679                         /* Always update checksum */
 680                         changed = 1;
 681                 }
 682         }
 683
 684 out:
 685         if (!changed)
 686                 return 0;
 687
 688         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 689                                                0, ctx->dir);
 690         if (ctx->errcode)
 691                 return BLOCK_ABORT;
 692
 693         return 0;
 694 }
 695
 696 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 697                                    struct ext2_inode *inode)
 698 {
 699         errcode_t       retval;
 700         struct rewrite_dir_context ctx;
 701
 702         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 703         if (retval)
 704                 return retval;
 705
 706         ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
 707         ctx.dir = dir;
 708         ctx.errcode = 0;
 709         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 710                                                 BLOCK_FLAG_DATA_ONLY,
 711                                        0, rewrite_dir_block, &ctx);
 712
 713         ext2fs_free_mem(&ctx.buf);
 714         if (retval)
 715                 return retval;
 716
 717         return ctx.errcode;
 718 }
 719
 720 /*
 721  * Forcibly set checksums in all inodes.
 722  */
 723 static void rewrite_inodes(ext2_filsys fs)
 724 {
 725         int length = EXT2_INODE_SIZE(fs->super);
 726         struct ext2_inode *inode, *zero;
 727         char            *ea_buf;
 728         ext2_inode_scan scan;
 729         errcode_t       retval;
 730         ext2_ino_t      ino;
 731         blk64_t         file_acl_block;
 732         int             inode_dirty;
 733
 734         if (fs->super->s_creator_os == EXT2_OS_HURD)
 735                 return;
 736
 737         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 738         if (retval) {
 739                 com_err("set_csum", retval, "while opening inode scan");
 740                 exit(1);
 741         }
 742
 743         retval = ext2fs_get_mem(length, &inode);
 744         if (retval) {
 745                 com_err("set_csum", retval, "while allocating memory");
 746                 exit(1);
 747         }
 748
 749         retval = ext2fs_get_memzero(length, &zero);
 750         if (retval) {
 751                 com_err("set_csum", retval, "while allocating memory");
 752                 exit(1);
 753         }
 754
 755         retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
 756         if (retval) {
 757                 com_err("set_csum", retval, "while allocating memory");
 758                 exit(1);
 759         }
 760
 761         do {
 762                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 763                 if (retval) {
 764                         com_err("set_csum", retval, "while getting next inode");
 765                         exit(1);
 766                 }
 767                 if (!ino)
 768                         break;
 769                 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 770                         inode_dirty = 1;
 771                 } else {
 772                         if (memcmp(inode, zero, length) != 0) {
 773                                 memset(inode, 0, length);
 774                                 inode_dirty = 1;
 775                         } else {
 776                                 inode_dirty = 0;
 777                         }
 778                 }
 779
 780                 if (inode_dirty) {
 781                         retval = ext2fs_write_inode_full(fs, ino, inode,
 782                                                          length);
 783                         if (retval) {
 784                                 com_err("set_csum", retval, "while writing "
 785                                         "inode");
 786                                 exit(1);
 787                         }
 788                 }
 789
 790                 retval = rewrite_extents(fs, ino, inode);
 791                 if (retval) {
 792                         com_err("rewrite_extents", retval,
 793                                 "while rewriting extents");
 794                         exit(1);
 795                 }
 796
 797                 if (LINUX_S_ISDIR(inode->i_mode) &&
 798                     ext2fs_inode_has_valid_blocks2(fs, inode)) {
 799                         retval = rewrite_directory(fs, ino, inode);
 800                         if (retval) {
 801                                 com_err("rewrite_directory", retval,
 802                                         "while rewriting directories");
 803                                 exit(1);
 804                         }
 805                 }
 806
 807                 file_acl_block = ext2fs_file_acl_block(fs, inode);
 808                 if (!file_acl_block)
 809                         continue;
 810                 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
 811                 if (retval) {
 812                         com_err("rewrite_eablock", retval,
 813                                 "while rewriting extended attribute");
 814                         exit(1);
 815                 }
 816                 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
 817                                                 ino);
 818                 if (retval) {
 819                         com_err("rewrite_eablock", retval,
 820                                 "while rewriting extended attribute");
 821                         exit(1);
 822                 }
 823         } while (ino);
 824
 825         ext2fs_free_mem(&zero);
 826         ext2fs_free_mem(&inode);
 827         ext2fs_free_mem(&ea_buf);
 828         ext2fs_close_inode_scan(scan);
 829 }
 830
 831 static void rewrite_metadata_checksums(ext2_filsys fs)
 832 {
 833         errcode_t retval;
 834         dgrp_t i;
 835
 836         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 837         ext2fs_init_csum_seed(fs);
 838         for (i = 0; i < fs->group_desc_count; i++)
 839                 ext2fs_group_desc_csum_set(fs, i);
 840         retval = ext2fs_read_bitmaps(fs);
 841         if (retval) {
 842                 com_err("rewrite_metadata_checksums", retval,
 843                         "while reading bitmaps");
 844                 exit(1);
 845         }
 846         rewrite_inodes(fs);
 847         ext2fs_mark_ib_dirty(fs);
 848         ext2fs_mark_bb_dirty(fs);
 849         ext2fs_mmp_update2(fs, 1);
 850         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 851         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 852         if (ext2fs_has_feature_metadata_csum(fs->super))
 853                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 854         else
 855                 fs->super->s_checksum_type = 0;
 856         ext2fs_mark_super_dirty(fs);
 857 }
 858
 859 static void enable_uninit_bg(ext2_filsys fs)
 860 {
 861         struct ext2_group_desc *gd;
 862         dgrp_t i;
 863
 864         for (i = 0; i < fs->group_desc_count; i++) {
 865                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 866                 gd->bg_itable_unused = 0;
 867                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 868                 ext2fs_group_desc_csum_set(fs, i);
 869         }
 870         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 871 }
 872
 873 static errcode_t zero_empty_inodes(ext2_filsys fs)
 874 {
 875         int length = EXT2_INODE_SIZE(fs->super);
 876         struct ext2_inode *inode = NULL;
 877         ext2_inode_scan scan;
 878         errcode_t       retval;
 879         ext2_ino_t      ino;
 880
 881         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 882         if (retval)
 883                 goto out;
 884
 885         retval = ext2fs_get_mem(length, &inode);
 886         if (retval)
 887                 goto out;
 888
 889         do {
 890                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 891                 if (retval)
 892                         goto out;
 893                 if (!ino)
 894                         break;
 895                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 896                         memset(inode, 0, length);
 897                         retval = ext2fs_write_inode_full(fs, ino, inode,
 898                                                          length);
 899                         if (retval)
 900                                 goto out;
 901                 }
 902         } while (1);
 903
 904 out:
 905         ext2fs_free_mem(&inode);
 906         ext2fs_close_inode_scan(scan);
 907         return retval;
 908 }
 909
 910 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
 911 {
 912         struct ext2_group_desc *gd;
 913         dgrp_t i;
 914         errcode_t retval;
 915         blk64_t b, c, d;
 916
 917         /* Load bitmaps to ensure that the uninit ones get written out */
 918         fs->super->s_feature_ro_compat |= csum_feature_flag;
 919         retval = ext2fs_read_bitmaps(fs);
 920         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
 921         if (retval) {
 922                 com_err("disable_uninit_bg", retval,
 923                         "while reading bitmaps");
 924                 request_fsck_afterwards(fs);
 925                 return retval;
 926         }
 927         ext2fs_mark_ib_dirty(fs);
 928         ext2fs_mark_bb_dirty(fs);
 929
 930         /* If we're only turning off uninit_bg, zero the inodes */
 931         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
 932                 retval = zero_empty_inodes(fs);
 933                 if (retval) {
 934                         com_err("disable_uninit_bg", retval,
 935                                 "while zeroing unused inodes");
 936                         request_fsck_afterwards(fs);
 937                         return retval;
 938                 }
 939         }
 940
 941         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
 942         for (i = 0; i < fs->group_desc_count; i++) {
 943                 b = ext2fs_block_bitmap_loc(fs, i);
 944                 ext2fs_mark_block_bitmap2(fs->block_map, b);
 945                 b = ext2fs_inode_bitmap_loc(fs, i);
 946                 ext2fs_mark_block_bitmap2(fs->block_map, b);
 947
 948                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
 949                 if (retval == 0 && b)
 950                         ext2fs_mark_block_bitmap2(fs->block_map, b);
 951                 if (retval == 0 && c)
 952                         ext2fs_mark_block_bitmap2(fs->block_map, c);
 953                 if (retval == 0 && d)
 954                         ext2fs_mark_block_bitmap2(fs->block_map, d);
 955                 if (retval) {
 956                         com_err("disable_uninit_bg", retval,
 957                                 "while initializing block bitmaps");
 958                         request_fsck_afterwards(fs);
 959                 }
 960
 961                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 962                 gd->bg_itable_unused = 0;
 963                 gd->bg_flags = 0;
 964                 ext2fs_group_desc_csum_set(fs, i);
 965         }
 966         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 967         ext2fs_mark_super_dirty(fs);
 968
 969         return 0;
 970 }
 971
 972 static void
 973 try_confirm_csum_seed_support(void)
 974 {
 975         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
 976                 fputs(_("WARNING: Could not confirm kernel support for "
 977                         "metadata_csum_seed.\n  This requires Linux >= "
 978                         "v4.4.\n"), stderr);
 979 }
 980
 981 /*
 982  * Update the feature set as provided by the user.
 983  */
 984 static int update_feature_set(ext2_filsys fs, char *features)
 985 {
 986         struct ext2_super_block *sb = fs->super;
 987         __u32           old_features[3];
 988         int             type_err;
 989         unsigned int    mask_err;
 990         errcode_t       err;
 991         enum quota_type qtype;
 992
 993 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 994                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 995 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 996                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 997 #define FEATURE_CHANGED(type, mask) ((mask) & \
 998                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 999
1000         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1001         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1002         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1003
1004         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1005                               ok_features, clear_ok_features,
1006                               &type_err, &mask_err)) {
1007                 if (!mask_err)
1008                         fprintf(stderr,
1009                                 _("Invalid filesystem option set: %s\n"),
1010                                 features);
1011                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1012                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1013                                           "not supported.\n"),
1014                                 e2p_feature2string(type_err &
1015                                                    E2P_FEATURE_TYPE_MASK,
1016                                                    mask_err));
1017                 else
1018                         fprintf(stderr, _("Setting filesystem feature '%s' "
1019                                           "not supported.\n"),
1020                                 e2p_feature2string(type_err, mask_err));
1021                 return 1;
1022         }
1023
1024         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1025                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1026                     !(mount_flags & EXT2_MF_READONLY)) {
1027                         fputs(_("The has_journal feature may only be "
1028                                 "cleared when the filesystem is\n"
1029                                 "unmounted or mounted "
1030                                 "read-only.\n"), stderr);
1031                         return 1;
1032                 }
1033                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1034                     f_flag < 2) {
1035                         fputs(_("The needs_recovery flag is set.  "
1036                                 "Please run e2fsck before clearing\n"
1037                                 "the has_journal flag.\n"), stderr);
1038                         return 1;
1039                 }
1040                 if (sb->s_journal_inum) {
1041                         if (remove_journal_inode(fs))
1042                                 return 1;
1043                 }
1044                 if (sb->s_journal_dev) {
1045                         if (remove_journal_device(fs))
1046                                 return 1;
1047                 }
1048         }
1049
1050         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1051                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1052                 if (ext2fs_has_feature_meta_bg(sb)) {
1053                         fputs(_("Setting filesystem feature 'sparse_super' "
1054                                 "not supported\nfor filesystems with "
1055                                 "the meta_bg feature enabled.\n"),
1056                                 stderr);
1057                         return 1;
1058                 }
1059         }
1060
1061         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1062                 int error;
1063
1064                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1065                     (mount_flags & EXT2_MF_READONLY)) {
1066                         fputs(_("The multiple mount protection feature can't\n"
1067                                 "be set if the filesystem is mounted or\n"
1068                                 "read-only.\n"), stderr);
1069                         return 1;
1070                 }
1071
1072                 error = ext2fs_mmp_init(fs);
1073                 if (error) {
1074                         fputs(_("\nError while enabling multiple mount "
1075                                 "protection feature."), stderr);
1076                         return 1;
1077                 }
1078
1079                 /*
1080                  * We want to update group desc with the new free blocks count
1081                  */
1082                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1083
1084                 printf(_("Multiple mount protection has been enabled "
1085                          "with update interval %ds.\n"),
1086                        sb->s_mmp_update_interval);
1087         }
1088
1089         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1090                 int error;
1091
1092                 if (mount_flags & EXT2_MF_READONLY) {
1093                         fputs(_("The multiple mount protection feature cannot\n"
1094                                 "be disabled if the filesystem is readonly.\n"),
1095                                 stderr);
1096                         return 1;
1097                 }
1098
1099                 error = ext2fs_read_bitmaps(fs);
1100                 if (error) {
1101                         fputs(_("Error while reading bitmaps\n"), stderr);
1102                         return 1;
1103                 }
1104
1105                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1106                 if (error) {
1107                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1108
1109                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1110                                 printf(_("Magic number in MMP block does not "
1111                                          "match. expected: %x, actual: %x\n"),
1112                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1113                         else
1114                                 com_err(program_name, error, "%s",
1115                                         _("while reading MMP block."));
1116                         goto mmp_error;
1117                 }
1118
1119                 /* We need to force out the group descriptors as well */
1120                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1121                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1122 mmp_error:
1123                 sb->s_mmp_block = 0;
1124                 sb->s_mmp_update_interval = 0;
1125         }
1126
1127         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1128                 /*
1129                  * If adding a journal flag, let the create journal
1130                  * code below handle setting the flag and creating the
1131                  * journal.  We supply a default size if necessary.
1132                  */
1133                 if (!journal_size)
1134                         journal_size = -1;
1135                 ext2fs_clear_feature_journal(sb);
1136         }
1137
1138         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1139                 if (!sb->s_def_hash_version)
1140                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1141                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1142                         uuid_generate((unsigned char *) sb->s_hash_seed);
1143         }
1144
1145         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1146                 if (ext2fs_check_desc(fs)) {
1147                         fputs(_("Clearing the flex_bg flag would "
1148                                 "cause the the filesystem to be\n"
1149                                 "inconsistent.\n"), stderr);
1150                         return 1;
1151                 }
1152         }
1153
1154         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1155                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1156                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1157                     !(mount_flags & EXT2_MF_READONLY)) {
1158                         fputs(_("The huge_file feature may only be "
1159                                 "cleared when the filesystem is\n"
1160                                 "unmounted or mounted "
1161                                 "read-only.\n"), stderr);
1162                         return 1;
1163                 }
1164         }
1165
1166         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1167                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1168                 check_fsck_needed(fs,
1169                         _("Enabling checksums could take some time."));
1170                 if (mount_flags & EXT2_MF_MOUNTED) {
1171                         fputs(_("Cannot enable metadata_csum on a mounted "
1172                                 "filesystem!\n"), stderr);
1173                         exit(1);
1174                 }
1175                 if (!ext2fs_has_feature_extents(fs->super))
1176                         printf("%s",
1177                                _("Extents are not enabled.  The file extent "
1178                                  "tree can be checksummed, whereas block maps "
1179                                  "cannot.  Not enabling extents reduces the "
1180                                  "coverage of metadata checksumming.  "
1181                                  "Re-run with -O extent to rectify.\n"));
1182                 if (!ext2fs_has_feature_64bit(fs->super))
1183                         printf("%s",
1184                                _("64-bit filesystem support is not enabled.  "
1185                                  "The larger fields afforded by this feature "
1186                                  "enable full-strength checksumming.  "
1187                                  "Run resize2fs -b to rectify.\n"));
1188                 rewrite_checksums = 1;
1189                 /* metadata_csum supersedes uninit_bg */
1190                 ext2fs_clear_feature_gdt_csum(fs->super);
1191
1192                 /* if uninit_bg was previously off, rewrite group desc */
1193                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1194                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1195                         enable_uninit_bg(fs);
1196
1197                 /*
1198                  * Since metadata_csum supersedes uninit_bg, pretend like
1199                  * uninit_bg has been off all along.
1200                  */
1201                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1202                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1203         }
1204
1205         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1206                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1207                 __u32   test_features[3];
1208
1209                 check_fsck_needed(fs,
1210                         _("Disabling checksums could take some time."));
1211                 if (mount_flags & EXT2_MF_MOUNTED) {
1212                         fputs(_("Cannot disable metadata_csum on a mounted "
1213                                 "filesystem!\n"), stderr);
1214                         exit(1);
1215                 }
1216                 rewrite_checksums = 1;
1217
1218                 /* Enable uninit_bg unless the user expressly turned it off */
1219                 memcpy(test_features, old_features, sizeof(test_features));
1220                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1221                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1222                 e2p_edit_feature2(features, test_features, ok_features,
1223                                   clear_ok_features, NULL, NULL);
1224                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1225                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1226                         ext2fs_set_feature_gdt_csum(fs->super);
1227
1228                 /*
1229                  * If we're turning off metadata_csum and not turning on
1230                  * uninit_bg, rewrite group desc.
1231                  */
1232                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1233                         err = disable_uninit_bg(fs,
1234                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1235                         if (err)
1236                                 return 1;
1237                 } else
1238                         /*
1239                          * metadata_csum previously provided uninit_bg, so if
1240                          * we're also setting the uninit_bg feature bit,
1241                          * pretend like it was previously enabled.  Checksums
1242                          * will be rewritten with crc16 later.
1243                          */
1244                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1245                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1246                 fs->super->s_checksum_seed = 0;
1247                 ext2fs_clear_feature_csum_seed(fs->super);
1248         }
1249
1250         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1251                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1252                 /* Do not enable uninit_bg when metadata_csum enabled */
1253                 if (ext2fs_has_feature_metadata_csum(fs->super))
1254                         ext2fs_clear_feature_gdt_csum(fs->super);
1255                 else
1256                         enable_uninit_bg(fs);
1257         }
1258
1259         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1260                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1261                 err = disable_uninit_bg(fs,
1262                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1263                 if (err)
1264                         return 1;
1265         }
1266
1267         /*
1268          * We don't actually toggle 64bit; resize2fs does that.  But this
1269          * must come after the metadata_csum feature_on so that it won't
1270          * complain about the lack of 64bit.
1271          */
1272         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1273                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1274                 if (mount_flags & EXT2_MF_MOUNTED) {
1275                         fprintf(stderr, _("Cannot enable 64-bit mode "
1276                                           "while mounted!\n"));
1277                         exit(1);
1278                 }
1279                 ext2fs_clear_feature_64bit(sb);
1280                 feature_64bit = 1;
1281         }
1282         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1283                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1284                 if (mount_flags & EXT2_MF_MOUNTED) {
1285                         fprintf(stderr, _("Cannot disable 64-bit mode "
1286                                           "while mounted!\n"));
1287                         exit(1);
1288                 }
1289                 ext2fs_set_feature_64bit(sb);
1290                 feature_64bit = -1;
1291         }
1292
1293         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1294                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1295                 /*
1296                  * Set the Q_flag here and handle the quota options in the code
1297                  * below.
1298                  */
1299                 if (!Q_flag) {
1300                         Q_flag = 1;
1301                         /* Enable usr/grp quota by default */
1302                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1303                                 if (qtype != PRJQUOTA)
1304                                         quota_enable[qtype] = QOPT_ENABLE;
1305                                 else
1306                                         quota_enable[qtype] = QOPT_DISABLE;
1307                         }
1308                 }
1309                 ext2fs_clear_feature_quota(sb);
1310         }
1311
1312         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1313                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1314                 Q_flag = 1;
1315                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1316         }
1317
1318         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1319                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1320                 Q_flag = 1;
1321                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1322         }
1323
1324         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1325                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1326                 /*
1327                  * Set the Q_flag here and handle the quota options in the code
1328                  * below.
1329                  */
1330                 if (Q_flag)
1331                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1332                                 "arguments.\n"), stderr);
1333                 Q_flag = 1;
1334                 /* Disable all quota by default */
1335                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1336                         quota_enable[qtype] = QOPT_DISABLE;
1337         }
1338
1339         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1340                 fs->super->s_encrypt_algos[0] =
1341                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1342                 fs->super->s_encrypt_algos[1] =
1343                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1344         }
1345
1346         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1347                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1348                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1349                         fputs(_("Setting feature 'metadata_csum_seed' "
1350                                 "is only supported\non filesystems with "
1351                                 "the metadata_csum feature enabled.\n"),
1352                                 stderr);
1353                         return 1;
1354                 }
1355                 try_confirm_csum_seed_support();
1356                 fs->super->s_checksum_seed = fs->csum_seed;
1357         }
1358
1359         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1360                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1361                 __le32 uuid_seed;
1362
1363                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1364                                         sizeof(fs->super->s_uuid));
1365                 if (fs->super->s_checksum_seed != uuid_seed &&
1366                     (mount_flags & EXT2_MF_MOUNTED)) {
1367                         fputs(_("UUID has changed since enabling "
1368                                 "metadata_csum.  Filesystem must be unmounted "
1369                                 "\nto safely rewrite all metadata to "
1370                                 "match the new UUID.\n"), stderr);
1371                         return 1;
1372                 }
1373
1374                 rewrite_checksums = 1;
1375         }
1376
1377         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1378             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1379              sb->s_feature_incompat))
1380                 ext2fs_update_dynamic_rev(fs);
1381
1382         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1383                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1384             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1385                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1386             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1387                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1388             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1389                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1390             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1391                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1392                 request_fsck_afterwards(fs);
1393
1394         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1395             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1396             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1397                 ext2fs_mark_super_dirty(fs);
1398
1399         return 0;
1400 }
1401
1402 /*
1403  * Add a journal to the filesystem.
1404  */
1405 static int add_journal(ext2_filsys fs)
1406 {
1407         unsigned long journal_blocks;
1408         errcode_t       retval;
1409         ext2_filsys     jfs;
1410         io_manager      io_ptr;
1411
1412         if (ext2fs_has_feature_journal(fs->super)) {
1413                 fputs(_("The filesystem already has a journal.\n"), stderr);
1414                 goto err;
1415         }
1416         if (journal_device) {
1417                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1418                                         NULL))
1419                         proceed_question(-1);
1420                 check_mount(journal_device, 0, _("journal"));
1421 #ifdef CONFIG_TESTIO_DEBUG
1422                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1423                         io_ptr = test_io_manager;
1424                         test_io_backing_manager = unix_io_manager;
1425                 } else
1426 #endif
1427                         io_ptr = unix_io_manager;
1428                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1429                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1430                                      fs->blocksize, io_ptr, &jfs);
1431                 if (retval) {
1432                         com_err(program_name, retval,
1433                                 _("\n\twhile trying to open journal on %s\n"),
1434                                 journal_device);
1435                         goto err;
1436                 }
1437                 printf(_("Creating journal on device %s: "),
1438                        journal_device);
1439                 fflush(stdout);
1440
1441                 retval = ext2fs_add_journal_device(fs, jfs);
1442                 ext2fs_close_free(&jfs);
1443                 if (retval) {
1444                         com_err(program_name, retval,
1445                                 _("while adding filesystem to journal on %s"),
1446                                 journal_device);
1447                         goto err;
1448                 }
1449                 fputs(_("done\n"), stdout);
1450         } else if (journal_size) {
1451                 fputs(_("Creating journal inode: "), stdout);
1452                 fflush(stdout);
1453                 journal_blocks = figure_journal_size(journal_size, fs);
1454
1455                 if (journal_location_string)
1456                         journal_location =
1457                                 parse_num_blocks2(journal_location_string,
1458                                                   fs->super->s_log_block_size);
1459                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1460                                                    journal_location,
1461                                                    journal_flags);
1462                 if (retval) {
1463                         fprintf(stderr, "\n");
1464                         com_err(program_name, retval, "%s",
1465                                 _("\n\twhile trying to create journal file"));
1466                         return retval;
1467                 } else
1468                         fputs(_("done\n"), stdout);
1469                 /*
1470                  * If the filesystem wasn't mounted, we need to force
1471                  * the block group descriptors out.
1472                  */
1473                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1474                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1475         }
1476         print_check_message(fs->super->s_max_mnt_count,
1477                             fs->super->s_checkinterval);
1478         return 0;
1479
1480 err:
1481         free(journal_device);
1482         return 1;
1483 }
1484
1485 static void handle_quota_options(ext2_filsys fs)
1486 {
1487         errcode_t retval;
1488         quota_ctx_t qctx;
1489         ext2_ino_t qf_ino;
1490         enum quota_type qtype;
1491         unsigned int qtype_bits = 0;
1492         int need_dirty = 0;
1493
1494         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1495                 if (quota_enable[qtype] != 0)
1496                         break;
1497         if (qtype == MAXQUOTAS)
1498                 /* Nothing to do. */
1499                 return;
1500
1501         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1502                 if (quota_enable[qtype] == QOPT_ENABLE)
1503                         qtype_bits |= 1 << qtype;
1504         }
1505
1506         retval = quota_init_context(&qctx, fs, qtype_bits);
1507         if (retval) {
1508                 com_err(program_name, retval,
1509                         _("while initializing quota context in support library"));
1510                 exit(1);
1511         }
1512
1513         if (qtype_bits)
1514                 quota_compute_usage(qctx);
1515
1516         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1517                 if (quota_enable[qtype] == QOPT_ENABLE &&
1518                     *quota_sb_inump(fs->super, qtype) == 0) {
1519                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1520                                 retval = quota_update_limits(qctx, qf_ino,
1521                                                              qtype);
1522                                 if (retval) {
1523                                         com_err(program_name, retval,
1524                                                 _("while updating quota limits (%d)"),
1525                                                 qtype);
1526                                         exit(1);
1527                                 }
1528                         }
1529                         retval = quota_write_inode(qctx, 1 << qtype);
1530                         if (retval) {
1531                                 com_err(program_name, retval,
1532                                         _("while writing quota file (%d)"),
1533                                         qtype);
1534                                 exit(1);
1535                         }
1536                         /* Enable Quota feature if one of quota enabled */
1537                         if (!ext2fs_has_feature_quota(fs->super)) {
1538                                 ext2fs_set_feature_quota(fs->super);
1539                                 need_dirty = 1;
1540                         }
1541                         if (qtype == PRJQUOTA &&
1542                             !ext2fs_has_feature_project(fs->super)) {
1543                                 ext2fs_set_feature_project(fs->super);
1544                                 need_dirty = 1;
1545                         }
1546                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1547                         retval = quota_remove_inode(fs, qtype);
1548                         if (retval) {
1549                                 com_err(program_name, retval,
1550                                         _("while removing quota file (%d)"),
1551                                         qtype);
1552                                 exit(1);
1553                         }
1554                         if (qtype == PRJQUOTA) {
1555                                 ext2fs_clear_feature_project(fs->super);
1556                                 need_dirty = 1;
1557                         }
1558                 }
1559         }
1560
1561         quota_release_context(&qctx);
1562         /* Clear Quota feature if all quota types disabled. */
1563         if (!qtype_bits) {
1564                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1565                         if (*quota_sb_inump(fs->super, qtype))
1566                                 break;
1567                 if (qtype == MAXQUOTAS) {
1568                         ext2fs_clear_feature_quota(fs->super);
1569                         need_dirty = 1;
1570                 }
1571
1572         }
1573         if (need_dirty)
1574                 ext2fs_mark_super_dirty(fs);
1575         return;
1576 }
1577
1578 static int option_handle_function(char *token)
1579 {
1580         if (strncmp(token, "usr", 3) == 0) {
1581                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1582         } else if (strncmp(token, "^usr", 4) == 0) {
1583                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1584         } else if (strncmp(token, "grp", 3) == 0) {
1585                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1586         } else if (strncmp(token, "^grp", 4) == 0) {
1587                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1588         } else if (strncmp(token, "prj", 3) == 0) {
1589                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1590         } else if (strncmp(token, "^prj", 4) == 0) {
1591                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1592         } else {
1593                 fputs(_("\nBad quota options specified.\n\n"
1594                         "Following valid quota options are available "
1595                         "(pass by separating with comma):\n"
1596                         "\t[^]usr[quota]\n"
1597                         "\t[^]grp[quota]\n"
1598                         "\t[^]prj[quota]\n"
1599                         "\n\n"), stderr);
1600                 return 1;
1601         }
1602         return 0;
1603 }
1604
1605 static void parse_e2label_options(int argc, char ** argv)
1606 {
1607         if ((argc < 2) || (argc > 3)) {
1608                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1609                 exit(1);
1610         }
1611         io_options = strchr(argv[1], '?');
1612         if (io_options)
1613                 *io_options++ = 0;
1614         device_name = blkid_get_devname(NULL, argv[1], NULL);
1615         if (!device_name) {
1616                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1617                         argv[1]);
1618                 exit(1);
1619         }
1620         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1621         if (argc == 3) {
1622                 open_flag |= EXT2_FLAG_RW;
1623                 L_flag = 1;
1624                 new_label = argv[2];
1625         } else
1626                 print_label++;
1627 }
1628
1629 static time_t parse_time(char *str)
1630 {
1631         struct  tm      ts;
1632
1633         if (strcmp(str, "now") == 0) {
1634                 return (time(0));
1635         }
1636         memset(&ts, 0, sizeof(ts));
1637 #ifdef HAVE_STRPTIME
1638         strptime(str, "%Y%m%d%H%M%S", &ts);
1639 #else
1640         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1641                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1642         ts.tm_year -= 1900;
1643         ts.tm_mon -= 1;
1644         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1645             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1646             ts.tm_min > 59 || ts.tm_sec > 61)
1647                 ts.tm_mday = 0;
1648 #endif
1649         if (ts.tm_mday == 0) {
1650                 com_err(program_name, 0,
1651                         _("Couldn't parse date/time specifier: %s"),
1652                         str);
1653                 usage();
1654         }
1655         ts.tm_isdst = -1;
1656         return (mktime(&ts));
1657 }
1658
1659 static void parse_tune2fs_options(int argc, char **argv)
1660 {
1661         int c;
1662         char *tmp;
1663         struct group *gr;
1664         struct passwd *pw;
1665         int ret;
1666         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1667
1668         open_flag = 0;
1669         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1670         while ((c = getopt(argc, argv, optstring)) != EOF)
1671                 switch (c) {
1672                 case 'c':
1673                         max_mount_count = strtol(optarg, &tmp, 0);
1674                         if (*tmp || max_mount_count > 16000) {
1675                                 com_err(program_name, 0,
1676                                         _("bad mounts count - %s"),
1677                                         optarg);
1678                                 usage();
1679                         }
1680                         if (max_mount_count == 0)
1681                                 max_mount_count = -1;
1682                         c_flag = 1;
1683                         open_flag = EXT2_FLAG_RW;
1684                         break;
1685                 case 'C':
1686                         mount_count = strtoul(optarg, &tmp, 0);
1687                         if (*tmp || mount_count > 16000) {
1688                                 com_err(program_name, 0,
1689                                         _("bad mounts count - %s"),
1690                                         optarg);
1691                                 usage();
1692                         }
1693                         C_flag = 1;
1694                         open_flag = EXT2_FLAG_RW;
1695                         break;
1696                 case 'e':
1697                         if (strcmp(optarg, "continue") == 0)
1698                                 errors = EXT2_ERRORS_CONTINUE;
1699                         else if (strcmp(optarg, "remount-ro") == 0)
1700                                 errors = EXT2_ERRORS_RO;
1701                         else if (strcmp(optarg, "panic") == 0)
1702                                 errors = EXT2_ERRORS_PANIC;
1703                         else {
1704                                 com_err(program_name, 0,
1705                                         _("bad error behavior - %s"),
1706                                         optarg);
1707                                 usage();
1708                         }
1709                         e_flag = 1;
1710                         open_flag = EXT2_FLAG_RW;
1711                         break;
1712                 case 'E':
1713                         extended_cmd = optarg;
1714                         open_flag |= EXT2_FLAG_RW;
1715                         break;
1716                 case 'f': /* Force */
1717                         f_flag++;
1718                         break;
1719                 case 'g':
1720                         resgid = strtoul(optarg, &tmp, 0);
1721                         if (*tmp) {
1722                                 gr = getgrnam(optarg);
1723                                 if (gr == NULL)
1724                                         tmp = optarg;
1725                                 else {
1726                                         resgid = gr->gr_gid;
1727                                         *tmp = 0;
1728                                 }
1729                         }
1730                         if (*tmp) {
1731                                 com_err(program_name, 0,
1732                                         _("bad gid/group name - %s"),
1733                                         optarg);
1734                                 usage();
1735                         }
1736                         g_flag = 1;
1737                         open_flag = EXT2_FLAG_RW;
1738                         break;
1739                 case 'i':
1740                         interval = strtoul(optarg, &tmp, 0);
1741                         switch (*tmp) {
1742                         case 's':
1743                                 tmp++;
1744                                 break;
1745                         case '\0':
1746                         case 'd':
1747                         case 'D': /* days */
1748                                 interval *= 86400;
1749                                 if (*tmp != '\0')
1750                                         tmp++;
1751                                 break;
1752                         case 'm':
1753                         case 'M': /* months! */
1754                                 interval *= 86400 * 30;
1755                                 tmp++;
1756                                 break;
1757                         case 'w':
1758                         case 'W': /* weeks */
1759                                 interval *= 86400 * 7;
1760                                 tmp++;
1761                                 break;
1762                         }
1763                         if (*tmp) {
1764                                 com_err(program_name, 0,
1765                                         _("bad interval - %s"), optarg);
1766                                 usage();
1767                         }
1768                         i_flag = 1;
1769                         open_flag = EXT2_FLAG_RW;
1770                         break;
1771                 case 'j':
1772                         if (!journal_size)
1773                                 journal_size = -1;
1774                         open_flag = EXT2_FLAG_RW;
1775                         break;
1776                 case 'J':
1777                         parse_journal_opts(optarg);
1778                         open_flag = EXT2_FLAG_RW;
1779                         break;
1780                 case 'l':
1781                         l_flag = 1;
1782                         break;
1783                 case 'L':
1784                         new_label = optarg;
1785                         L_flag = 1;
1786                         open_flag |= EXT2_FLAG_RW |
1787                                 EXT2_FLAG_JOURNAL_DEV_OK;
1788                         break;
1789                 case 'm':
1790                         reserved_ratio = strtod(optarg, &tmp);
1791                         if (*tmp || reserved_ratio > 50 ||
1792                             reserved_ratio < 0) {
1793                                 com_err(program_name, 0,
1794                                         _("bad reserved block ratio - %s"),
1795                                         optarg);
1796                                 usage();
1797                         }
1798                         m_flag = 1;
1799                         open_flag = EXT2_FLAG_RW;
1800                         break;
1801                 case 'M':
1802                         new_last_mounted = optarg;
1803                         M_flag = 1;
1804                         open_flag = EXT2_FLAG_RW;
1805                         break;
1806                 case 'o':
1807                         if (mntopts_cmd) {
1808                                 com_err(program_name, 0, "%s",
1809                                         _("-o may only be specified once"));
1810                                 usage();
1811                         }
1812                         mntopts_cmd = optarg;
1813                         open_flag = EXT2_FLAG_RW;
1814                         break;
1815                 case 'O':
1816                         if (features_cmd) {
1817                                 com_err(program_name, 0, "%s",
1818                                         _("-O may only be specified once"));
1819                                 usage();
1820                         }
1821                         features_cmd = optarg;
1822                         open_flag = EXT2_FLAG_RW;
1823                         break;
1824                 case 'Q':
1825                         Q_flag = 1;
1826                         ret = parse_quota_opts(optarg, option_handle_function);
1827                         if (ret)
1828                                 exit(1);
1829                         open_flag = EXT2_FLAG_RW;
1830                         break;
1831                 case 'r':
1832                         reserved_blocks = strtoul(optarg, &tmp, 0);
1833                         if (*tmp) {
1834                                 com_err(program_name, 0,
1835                                         _("bad reserved blocks count - %s"),
1836                                         optarg);
1837                                 usage();
1838                         }
1839                         r_flag = 1;
1840                         open_flag = EXT2_FLAG_RW;
1841                         break;
1842                 case 's': /* Deprecated */
1843                         s_flag = atoi(optarg);
1844                         open_flag = EXT2_FLAG_RW;
1845                         break;
1846                 case 'T':
1847                         T_flag = 1;
1848                         last_check_time = parse_time(optarg);
1849                         open_flag = EXT2_FLAG_RW;
1850                         break;
1851                 case 'u':
1852                                 resuid = strtoul(optarg, &tmp, 0);
1853                                 if (*tmp) {
1854                                         pw = getpwnam(optarg);
1855                                         if (pw == NULL)
1856                                                 tmp = optarg;
1857                                         else {
1858                                                 resuid = pw->pw_uid;
1859                                                 *tmp = 0;
1860                                         }
1861                                 }
1862                                 if (*tmp) {
1863                                         com_err(program_name, 0,
1864                                                 _("bad uid/user name - %s"),
1865                                                 optarg);
1866                                         usage();
1867                                 }
1868                                 u_flag = 1;
1869                                 open_flag = EXT2_FLAG_RW;
1870                                 break;
1871                 case 'U':
1872                         new_UUID = optarg;
1873                         U_flag = 1;
1874                         open_flag = EXT2_FLAG_RW |
1875                                 EXT2_FLAG_JOURNAL_DEV_OK;
1876                         break;
1877                 case 'I':
1878                         new_inode_size = strtoul(optarg, &tmp, 0);
1879                         if (*tmp) {
1880                                 com_err(program_name, 0,
1881                                         _("bad inode size - %s"),
1882                                         optarg);
1883                                 usage();
1884                         }
1885                         if (!((new_inode_size &
1886                                (new_inode_size - 1)) == 0)) {
1887                                 com_err(program_name, 0,
1888                                         _("Inode size must be a "
1889                                           "power of two- %s"),
1890                                         optarg);
1891                                 usage();
1892                         }
1893                         open_flag = EXT2_FLAG_RW;
1894                         I_flag = 1;
1895                         break;
1896                 case 'z':
1897                         undo_file = optarg;
1898                         break;
1899                 default:
1900                         usage();
1901                 }
1902         if (optind < argc - 1 || optind == argc)
1903                 usage();
1904         if (!open_flag && !l_flag)
1905                 usage();
1906         io_options = strchr(argv[optind], '?');
1907         if (io_options)
1908                 *io_options++ = 0;
1909         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1910         if (!device_name) {
1911                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1912                         argv[optind]);
1913                 exit(1);
1914         }
1915 }
1916
1917 #ifdef CONFIG_BUILD_FINDFS
1918 void do_findfs(int argc, char **argv)
1919 {
1920         char    *dev;
1921
1922         if ((argc != 2) ||
1923             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1924                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1925                 exit(2);
1926         }
1927         dev = blkid_get_devname(NULL, argv[1], NULL);
1928         if (!dev) {
1929                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1930                         argv[1]);
1931                 exit(1);
1932         }
1933         puts(dev);
1934         exit(0);
1935 }
1936 #endif
1937
1938 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1939 {
1940         char    *buf, *token, *next, *p, *arg;
1941         int     len, hash_alg;
1942         int     r_usage = 0;
1943
1944         len = strlen(opts);
1945         buf = malloc(len+1);
1946         if (!buf) {
1947                 fprintf(stderr, "%s",
1948                         _("Couldn't allocate memory to parse options!\n"));
1949                 return 1;
1950         }
1951         strcpy(buf, opts);
1952         for (token = buf; token && *token; token = next) {
1953                 p = strchr(token, ',');
1954                 next = 0;
1955                 if (p) {
1956                         *p = 0;
1957                         next = p+1;
1958                 }
1959                 arg = strchr(token, '=');
1960                 if (arg) {
1961                         *arg = 0;
1962                         arg++;
1963                 }
1964                 if (strcmp(token, "clear-mmp") == 0 ||
1965                     strcmp(token, "clear_mmp") == 0) {
1966                         clear_mmp = 1;
1967                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1968                         unsigned long intv;
1969                         if (!arg) {
1970                                 r_usage++;
1971                                 continue;
1972                         }
1973                         intv = strtoul(arg, &p, 0);
1974                         if (*p) {
1975                                 fprintf(stderr,
1976                                         _("Invalid mmp_update_interval: %s\n"),
1977                                         arg);
1978                                 r_usage++;
1979                                 continue;
1980                         }
1981                         if (intv == 0) {
1982                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1983                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1984                                 fprintf(stderr,
1985                                         _("mmp_update_interval too big: %lu\n"),
1986                                         intv);
1987                                 r_usage++;
1988                                 continue;
1989                         }
1990                         printf(P_("Setting multiple mount protection update "
1991                                   "interval to %lu second\n",
1992                                   "Setting multiple mount protection update "
1993                                   "interval to %lu seconds\n", intv),
1994                                intv);
1995                         fs->super->s_mmp_update_interval = intv;
1996                         ext2fs_mark_super_dirty(fs);
1997                 } else if (!strcmp(token, "test_fs")) {
1998                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1999                         printf("Setting test filesystem flag\n");
2000                         ext2fs_mark_super_dirty(fs);
2001                 } else if (!strcmp(token, "^test_fs")) {
2002                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2003                         printf("Clearing test filesystem flag\n");
2004                         ext2fs_mark_super_dirty(fs);
2005                 } else if (strcmp(token, "stride") == 0) {
2006                         if (!arg) {
2007                                 r_usage++;
2008                                 continue;
2009                         }
2010                         stride = strtoul(arg, &p, 0);
2011                         if (*p) {
2012                                 fprintf(stderr,
2013                                         _("Invalid RAID stride: %s\n"),
2014                                         arg);
2015                                 r_usage++;
2016                                 continue;
2017                         }
2018                         stride_set = 1;
2019                 } else if (strcmp(token, "stripe-width") == 0 ||
2020                            strcmp(token, "stripe_width") == 0) {
2021                         if (!arg) {
2022                                 r_usage++;
2023                                 continue;
2024                         }
2025                         stripe_width = strtoul(arg, &p, 0);
2026                         if (*p) {
2027                                 fprintf(stderr,
2028                                         _("Invalid RAID stripe-width: %s\n"),
2029                                         arg);
2030                                 r_usage++;
2031                                 continue;
2032                         }
2033                         stripe_width_set = 1;
2034                 } else if (strcmp(token, "hash_alg") == 0 ||
2035                            strcmp(token, "hash-alg") == 0) {
2036                         if (!arg) {
2037                                 r_usage++;
2038                                 continue;
2039                         }
2040                         hash_alg = e2p_string2hash(arg);
2041                         if (hash_alg < 0) {
2042                                 fprintf(stderr,
2043                                         _("Invalid hash algorithm: %s\n"),
2044                                         arg);
2045                                 r_usage++;
2046                                 continue;
2047                         }
2048                         fs->super->s_def_hash_version = hash_alg;
2049                         printf(_("Setting default hash algorithm "
2050                                  "to %s (%d)\n"),
2051                                arg, hash_alg);
2052                         ext2fs_mark_super_dirty(fs);
2053                 } else if (!strcmp(token, "mount_opts")) {
2054                         if (!arg) {
2055                                 r_usage++;
2056                                 continue;
2057                         }
2058                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2059                                 fprintf(stderr,
2060                                         "Extended mount options too long\n");
2061                                 continue;
2062                         }
2063                         ext_mount_opts = strdup(arg);
2064                 } else
2065                         r_usage++;
2066         }
2067         if (r_usage) {
2068                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2069                         "Extended options are separated by commas, "
2070                         "and may take an argument which\n"
2071                         "\tis set off by an equals ('=') sign.\n\n"
2072                         "Valid extended options are:\n"
2073                         "\tclear_mmp\n"
2074                         "\thash_alg=<hash algorithm>\n"
2075                         "\tmount_opts=<extended default mount options>\n"
2076                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2077                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2078                         "\ttest_fs\n"
2079                         "\t^test_fs\n"));
2080                 free(buf);
2081                 return 1;
2082         }
2083         free(buf);
2084
2085         return 0;
2086 }
2087
2088 /*
2089  * Fill in the block bitmap bmap with the information regarding the
2090  * blocks to be moved
2091  */
2092 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2093                             ext2fs_block_bitmap bmap)
2094 {
2095         dgrp_t i;
2096         int retval;
2097         ext2_badblocks_list bb_list = 0;
2098         blk64_t j, needed_blocks = 0;
2099         blk64_t start_blk, end_blk;
2100
2101         retval = ext2fs_read_bb_inode(fs, &bb_list);
2102         if (retval)
2103                 return retval;
2104
2105         for (i = 0; i < fs->group_desc_count; i++) {
2106                 start_blk = ext2fs_inode_table_loc(fs, i) +
2107                                         fs->inode_blocks_per_group;
2108
2109                 end_blk = ext2fs_inode_table_loc(fs, i) +
2110                                         new_ino_blks_per_grp;
2111
2112                 for (j = start_blk; j < end_blk; j++) {
2113                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2114                                 /*
2115                                  * IF the block is a bad block we fail
2116                                  */
2117                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2118                                         ext2fs_badblocks_list_free(bb_list);
2119                                         return ENOSPC;
2120                                 }
2121
2122                                 ext2fs_mark_block_bitmap2(bmap, j);
2123                         } else {
2124                                 /*
2125                                  * We are going to use this block for
2126                                  * inode table. So mark them used.
2127                                  */
2128                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2129                         }
2130                 }
2131                 needed_blocks += end_blk - start_blk;
2132         }
2133
2134         ext2fs_badblocks_list_free(bb_list);
2135         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2136                 return ENOSPC;
2137
2138         return 0;
2139 }
2140
2141 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2142 {
2143         dgrp_t group;
2144         group = ext2fs_group_of_blk2(fs, blk);
2145         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2146                 return 1;
2147         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2148                 return 1;
2149         return 0;
2150 }
2151
2152 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2153 {
2154         blk64_t start_blk, end_blk;
2155         start_blk = fs->super->s_first_data_block +
2156                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2157         /*
2158          * We cannot get new block beyond end_blk for for the last block group
2159          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2160          */
2161         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2162         if (blk >= start_blk && blk <= end_blk)
2163                 return 1;
2164         return 0;
2165 }
2166
2167 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2168 {
2169
2170         char *buf;
2171         dgrp_t group = 0;
2172         errcode_t retval;
2173         int meta_data = 0;
2174         blk64_t blk, new_blk, goal;
2175         struct blk_move *bmv;
2176
2177         retval = ext2fs_get_mem(fs->blocksize, &buf);
2178         if (retval)
2179                 return retval;
2180
2181         for (new_blk = blk = fs->super->s_first_data_block;
2182              blk < ext2fs_blocks_count(fs->super); blk++) {
2183                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2184                         continue;
2185
2186                 if (ext2fs_is_meta_block(fs, blk)) {
2187                         /*
2188                          * If the block is mapping a fs meta data block
2189                          * like group desc/block bitmap/inode bitmap. We
2190                          * should find a block in the same group and fix
2191                          * the respective fs metadata pointers. Otherwise
2192                          * fail
2193                          */
2194                         group = ext2fs_group_of_blk2(fs, blk);
2195                         goal = ext2fs_group_first_block2(fs, group);
2196                         meta_data = 1;
2197
2198                 } else {
2199                         goal = new_blk;
2200                 }
2201                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2202                 if (retval)
2203                         goto err_out;
2204
2205                 /* new fs meta data block should be in the same group */
2206                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2207                         retval = ENOSPC;
2208                         goto err_out;
2209                 }
2210
2211                 /* Mark this block as allocated */
2212                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2213
2214                 /* Add it to block move list */
2215                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2216                 if (retval)
2217                         goto err_out;
2218
2219                 bmv->old_loc = blk;
2220                 bmv->new_loc = new_blk;
2221
2222                 list_add(&(bmv->list), &blk_move_list);
2223
2224                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2225                 if (retval)
2226                         goto err_out;
2227
2228                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2229                 if (retval)
2230                         goto err_out;
2231         }
2232
2233 err_out:
2234         ext2fs_free_mem(&buf);
2235         return retval;
2236 }
2237
2238 static blk64_t translate_block(blk64_t blk)
2239 {
2240         struct list_head *entry;
2241         struct blk_move *bmv;
2242
2243         list_for_each(entry, &blk_move_list) {
2244                 bmv = list_entry(entry, struct blk_move, list);
2245                 if (bmv->old_loc == blk)
2246                         return bmv->new_loc;
2247         }
2248
2249         return 0;
2250 }
2251
2252 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2253                          blk64_t *block_nr,
2254                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2255                          blk64_t ref_block EXT2FS_ATTR((unused)),
2256                          int ref_offset EXT2FS_ATTR((unused)),
2257                          void *priv_data)
2258 {
2259         int ret = 0;
2260         blk64_t new_blk;
2261         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2262
2263         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2264                 return 0;
2265         new_blk = translate_block(*block_nr);
2266         if (new_blk) {
2267                 *block_nr = new_blk;
2268                 /*
2269                  * This will force the ext2fs_write_inode in the iterator
2270                  */
2271                 ret |= BLOCK_CHANGED;
2272         }
2273
2274         return ret;
2275 }
2276
2277 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2278 {
2279         errcode_t retval = 0;
2280         ext2_ino_t ino;
2281         blk64_t blk;
2282         char *block_buf = 0;
2283         struct ext2_inode inode;
2284         ext2_inode_scan scan = NULL;
2285
2286         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2287         if (retval)
2288                 return retval;
2289
2290         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2291         if (retval)
2292                 goto err_out;
2293
2294         while (1) {
2295                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2296                 if (retval)
2297                         goto err_out;
2298
2299                 if (!ino)
2300                         break;
2301
2302                 if (inode.i_links_count == 0)
2303                         continue; /* inode not in use */
2304
2305                 /* FIXME!!
2306                  * If we end up modifying the journal inode
2307                  * the sb->s_jnl_blocks will differ. But a
2308                  * subsequent e2fsck fixes that.
2309                  * Do we need to fix this ??
2310                  */
2311
2312                 if (ext2fs_file_acl_block(fs, &inode) &&
2313                     ext2fs_test_block_bitmap2(bmap,
2314                                         ext2fs_file_acl_block(fs, &inode))) {
2315                         blk = translate_block(ext2fs_file_acl_block(fs,
2316                                                                     &inode));
2317                         if (!blk)
2318                                 continue;
2319
2320                         ext2fs_file_acl_block_set(fs, &inode, blk);
2321
2322                         /*
2323                          * Write the inode to disk so that inode table
2324                          * resizing can work
2325                          */
2326                         retval = ext2fs_write_inode(fs, ino, &inode);
2327                         if (retval)
2328                                 goto err_out;
2329                 }
2330
2331                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2332                         continue;
2333
2334                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2335                                                process_block, bmap);
2336                 if (retval)
2337                         goto err_out;
2338
2339         }
2340
2341 err_out:
2342         ext2fs_free_mem(&block_buf);
2343         ext2fs_close_inode_scan(scan);
2344
2345         return retval;
2346 }
2347
2348 /*
2349  * We need to scan for inode and block bitmaps that may need to be
2350  * moved.  This can take place if the filesystem was formatted for
2351  * RAID arrays using the mke2fs's extended option "stride".
2352  */
2353 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2354 {
2355         dgrp_t i;
2356         blk64_t blk, new_blk;
2357
2358         for (i = 0; i < fs->group_desc_count; i++) {
2359                 blk = ext2fs_block_bitmap_loc(fs, i);
2360                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2361                         new_blk = translate_block(blk);
2362                         if (!new_blk)
2363                                 continue;
2364                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2365                 }
2366
2367                 blk = ext2fs_inode_bitmap_loc(fs, i);
2368                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2369                         new_blk = translate_block(blk);
2370                         if (!new_blk)
2371                                 continue;
2372                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2373                 }
2374         }
2375         return 0;
2376 }
2377
2378 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2379 {
2380         dgrp_t i;
2381         blk64_t blk;
2382         errcode_t retval;
2383         int new_ino_blks_per_grp;
2384         unsigned int j;
2385         char *old_itable = NULL, *new_itable = NULL;
2386         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2387         unsigned long old_ino_size;
2388         int old_itable_size, new_itable_size;
2389
2390         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2391         old_ino_size = EXT2_INODE_SIZE(fs->super);
2392
2393         new_ino_blks_per_grp = ext2fs_div_ceil(
2394                                         EXT2_INODES_PER_GROUP(fs->super) *
2395                                         new_ino_size,
2396                                         fs->blocksize);
2397
2398         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2399
2400         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2401         if (retval)
2402                 return retval;
2403
2404         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2405         if (retval)
2406                 goto err_out;
2407
2408         tmp_old_itable = old_itable;
2409         tmp_new_itable = new_itable;
2410
2411         for (i = 0; i < fs->group_desc_count; i++) {
2412                 blk = ext2fs_inode_table_loc(fs, i);
2413                 retval = io_channel_read_blk64(fs->io, blk,
2414                                 fs->inode_blocks_per_group, old_itable);
2415                 if (retval)
2416                         goto err_out;
2417
2418                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2419                         memcpy(new_itable, old_itable, old_ino_size);
2420
2421                         memset(new_itable+old_ino_size, 0,
2422                                         new_ino_size - old_ino_size);
2423
2424                         new_itable += new_ino_size;
2425                         old_itable += old_ino_size;
2426                 }
2427
2428                 /* reset the pointer */
2429                 old_itable = tmp_old_itable;
2430                 new_itable = tmp_new_itable;
2431
2432                 retval = io_channel_write_blk64(fs->io, blk,
2433                                         new_ino_blks_per_grp, new_itable);
2434                 if (retval)
2435                         goto err_out;
2436         }
2437
2438         /* Update the meta data */
2439         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2440         ext2fs_free_inode_cache(fs->icache);
2441         fs->icache = 0;
2442         fs->super->s_inode_size = new_ino_size;
2443
2444 err_out:
2445         if (old_itable)
2446                 ext2fs_free_mem(&old_itable);
2447
2448         if (new_itable)
2449                 ext2fs_free_mem(&new_itable);
2450
2451         return retval;
2452 }
2453
2454 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2455 {
2456         blk64_t         blk;
2457         ext2_ino_t      ino;
2458         unsigned int    group = 0;
2459         unsigned int    count = 0;
2460         int             total_free = 0;
2461         int             group_free = 0;
2462
2463         /*
2464          * First calculate the block statistics
2465          */
2466         for (blk = fs->super->s_first_data_block;
2467              blk < ext2fs_blocks_count(fs->super); blk++) {
2468                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2469                         group_free++;
2470                         total_free++;
2471                 }
2472                 count++;
2473                 if ((count == fs->super->s_blocks_per_group) ||
2474                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2475                         ext2fs_bg_free_blocks_count_set(fs, group++,
2476                                                         group_free);
2477                         count = 0;
2478                         group_free = 0;
2479                 }
2480         }
2481         total_free = EXT2FS_C2B(fs, total_free);
2482         ext2fs_free_blocks_count_set(fs->super, total_free);
2483
2484         /*
2485          * Next, calculate the inode statistics
2486          */
2487         group_free = 0;
2488         total_free = 0;
2489         count = 0;
2490         group = 0;
2491
2492         /* Protect loop from wrap-around if s_inodes_count maxed */
2493         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2494                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2495                         group_free++;
2496                         total_free++;
2497                 }
2498                 count++;
2499                 if ((count == fs->super->s_inodes_per_group) ||
2500                     (ino == fs->super->s_inodes_count)) {
2501                         ext2fs_bg_free_inodes_count_set(fs, group++,
2502                                                         group_free);
2503                         count = 0;
2504                         group_free = 0;
2505                 }
2506         }
2507         fs->super->s_free_inodes_count = total_free;
2508         ext2fs_mark_super_dirty(fs);
2509         return 0;
2510 }
2511
2512 #define list_for_each_safe(pos, pnext, head) \
2513         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2514              pos = pnext, pnext = pos->next)
2515
2516 static void free_blk_move_list(void)
2517 {
2518         struct list_head *entry, *tmp;
2519         struct blk_move *bmv;
2520
2521         list_for_each_safe(entry, tmp, &blk_move_list) {
2522                 bmv = list_entry(entry, struct blk_move, list);
2523                 list_del(entry);
2524                 ext2fs_free_mem(&bmv);
2525         }
2526         return;
2527 }
2528
2529 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2530 {
2531         errcode_t retval;
2532         int new_ino_blks_per_grp;
2533         ext2fs_block_bitmap bmap;
2534
2535         retval = ext2fs_read_inode_bitmap(fs);
2536         if (retval) {
2537                 fputs(_("Failed to read inode bitmap\n"), stderr);
2538                 return retval;
2539         }
2540         retval = ext2fs_read_block_bitmap(fs);
2541         if (retval) {
2542                 fputs(_("Failed to read block bitmap\n"), stderr);
2543                 return retval;
2544         }
2545         INIT_LIST_HEAD(&blk_move_list);
2546
2547
2548         new_ino_blks_per_grp = ext2fs_div_ceil(
2549                                         EXT2_INODES_PER_GROUP(fs->super)*
2550                                         new_size,
2551                                         fs->blocksize);
2552
2553         /* We may change the file system.
2554          * Mark the file system as invalid so that
2555          * the user is prompted to run fsck.
2556          */
2557         fs->super->s_state &= ~EXT2_VALID_FS;
2558
2559         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2560                                                 &bmap);
2561         if (retval) {
2562                 fputs(_("Failed to allocate block bitmap when "
2563                                 "increasing inode size\n"), stderr);
2564                 return retval;
2565         }
2566         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2567         if (retval) {
2568                 fputs(_("Not enough space to increase inode size \n"), stderr);
2569                 goto err_out;
2570         }
2571         retval = move_block(fs, bmap);
2572         if (retval) {
2573                 fputs(_("Failed to relocate blocks during inode resize \n"),
2574                       stderr);
2575                 goto err_out;
2576         }
2577         retval = inode_scan_and_fix(fs, bmap);
2578         if (retval)
2579                 goto err_out_undo;
2580
2581         retval = group_desc_scan_and_fix(fs, bmap);
2582         if (retval)
2583                 goto err_out_undo;
2584
2585         retval = expand_inode_table(fs, new_size);
2586         if (retval)
2587                 goto err_out_undo;
2588
2589         ext2fs_calculate_summary_stats(fs);
2590
2591         fs->super->s_state |= EXT2_VALID_FS;
2592         /* mark super block and block bitmap as dirty */
2593         ext2fs_mark_super_dirty(fs);
2594         ext2fs_mark_bb_dirty(fs);
2595
2596 err_out:
2597         free_blk_move_list();
2598         ext2fs_free_block_bitmap(bmap);
2599
2600         return retval;
2601
2602 err_out_undo:
2603         free_blk_move_list();
2604         ext2fs_free_block_bitmap(bmap);
2605         fputs(_("Error in resizing the inode size.\n"
2606                         "Run e2undo to undo the "
2607                         "file system changes. \n"), stderr);
2608
2609         return retval;
2610 }
2611
2612 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2613 {
2614         errcode_t retval = 0;
2615         const char *tdb_dir;
2616         char *tdb_file = NULL;
2617         char *dev_name, *tmp_name;
2618
2619         /* (re)open a specific undo file */
2620         if (undo_file && undo_file[0] != 0) {
2621                 retval = set_undo_io_backing_manager(*io_ptr);
2622                 if (retval)
2623                         goto err;
2624                 *io_ptr = undo_io_manager;
2625                 retval = set_undo_io_backup_file(undo_file);
2626                 if (retval)
2627                         goto err;
2628                 printf(_("Overwriting existing filesystem; this can be undone "
2629                          "using the command:\n"
2630                          "    e2undo %s %s\n\n"),
2631                          undo_file, name);
2632                 return retval;
2633         }
2634
2635         /*
2636          * Configuration via a conf file would be
2637          * nice
2638          */
2639         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2640         if (!tdb_dir)
2641                 tdb_dir = "/var/lib/e2fsprogs";
2642
2643         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2644             access(tdb_dir, W_OK))
2645                 return 0;
2646
2647         tmp_name = strdup(name);
2648         if (!tmp_name)
2649                 goto errout;
2650         dev_name = basename(tmp_name);
2651         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2652         if (!tdb_file) {
2653                 free(tmp_name);
2654                 goto errout;
2655         }
2656         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2657         free(tmp_name);
2658
2659         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2660                 retval = errno;
2661                 com_err(program_name, retval,
2662                         _("while trying to delete %s"), tdb_file);
2663                 goto errout;
2664         }
2665
2666         retval = set_undo_io_backing_manager(*io_ptr);
2667         if (retval)
2668                 goto errout;
2669         *io_ptr = undo_io_manager;
2670         retval = set_undo_io_backup_file(tdb_file);
2671         if (retval)
2672                 goto errout;
2673         printf(_("Overwriting existing filesystem; this can be undone "
2674                  "using the command:\n"
2675                  "    e2undo %s %s\n\n"),
2676                  tdb_file, name);
2677
2678         free(tdb_file);
2679         return 0;
2680 errout:
2681         free(tdb_file);
2682 err:
2683         com_err("tune2fs", retval, "while trying to setup undo file\n");
2684         return retval;
2685 }
2686
2687 static int
2688 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2689 {
2690         int retval, nr_users, start;
2691         journal_superblock_t *jsb;
2692         ext2_filsys jfs;
2693         __u8 *j_uuid;
2694         char *journal_path;
2695         char uuid[UUID_STR_SIZE];
2696         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2697
2698         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2699                 return 0;
2700
2701         uuid_unparse(sb->s_journal_uuid, uuid);
2702         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2703         if (!journal_path)
2704                 return 0;
2705
2706         retval = ext2fs_open2(journal_path, io_options,
2707                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2708                               0, 0, unix_io_manager, &jfs);
2709         if (retval) {
2710                 com_err(program_name, retval,
2711                         _("while trying to open %s"),
2712                         journal_path);
2713                 return retval;
2714         }
2715
2716         retval = get_journal_sb(jfs, buf);
2717         if (retval != 0) {
2718                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2719                         fprintf(stderr, _("%s is not a journal device.\n"),
2720                                 journal_path);
2721                 return retval;
2722         }
2723
2724         jsb = (journal_superblock_t *) buf;
2725         /* Find the filesystem UUID */
2726         nr_users = ntohl(jsb->s_nr_users);
2727
2728         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2729         if (j_uuid == NULL) {
2730                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2731                       stderr);
2732                 return EXT2_ET_LOAD_EXT_JOURNAL;
2733         }
2734
2735         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2736
2737         start = ext2fs_journal_sb_start(jfs->blocksize);
2738         /* Write back the journal superblock */
2739         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2740         if (retval != 0) {
2741                 com_err(program_name, retval,
2742                         "while writing journal superblock.");
2743                 return retval;
2744         }
2745
2746         ext2fs_close(jfs);
2747
2748         return 0;
2749 }
2750
2751 #ifndef BUILD_AS_LIB
2752 int main(int argc, char **argv)
2753 #else
2754 int tune2fs_main(int argc, char **argv)
2755 #endif  /* BUILD_AS_LIB */
2756 {
2757         errcode_t retval;
2758         ext2_filsys fs;
2759         struct ext2_super_block *sb;
2760         io_manager io_ptr, io_ptr_orig = NULL;
2761         int rc = 0;
2762         char default_undo_file[1] = { 0 };
2763
2764 #ifdef ENABLE_NLS
2765         setlocale(LC_MESSAGES, "");
2766         setlocale(LC_CTYPE, "");
2767         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2768         textdomain(NLS_CAT_NAME);
2769         set_com_err_gettext(gettext);
2770 #endif
2771         if (argc && *argv)
2772                 program_name = *argv;
2773         add_error_table(&et_ext2_error_table);
2774
2775 #ifdef CONFIG_BUILD_FINDFS
2776         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2777                 do_findfs(argc, argv);
2778 #endif
2779         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2780                 parse_e2label_options(argc, argv);
2781         else
2782                 parse_tune2fs_options(argc, argv);
2783
2784 #ifdef CONFIG_TESTIO_DEBUG
2785         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2786                 io_ptr = test_io_manager;
2787                 test_io_backing_manager = unix_io_manager;
2788         } else
2789 #endif
2790                 io_ptr = unix_io_manager;
2791
2792 retry_open:
2793         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2794                 open_flag |= EXT2_FLAG_SKIP_MMP;
2795
2796         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2797
2798         /* keep the filesystem struct around to dump MMP data */
2799         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2800
2801         retval = ext2fs_open2(device_name, io_options, open_flag,
2802                               0, 0, io_ptr, &fs);
2803         if (retval) {
2804                 com_err(program_name, retval,
2805                         _("while trying to open %s"),
2806                         device_name);
2807                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2808                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2809                         dump_mmp_msg(fs->mmp_buf,
2810                                      _("If you are sure the filesystem "
2811                                        "is not in use on any node, run:\n"
2812                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2813                 else if (retval == EXT2_ET_MMP_FAILED)
2814                         dump_mmp_msg(fs->mmp_buf, NULL);
2815                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2816                         fprintf(stderr,
2817                                 _("MMP block magic is bad. Try to fix it by "
2818                                   "running:\n'e2fsck -f %s'\n"), device_name);
2819                 else if (retval == EXT2_ET_BAD_MAGIC)
2820                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2821                 else if (retval != EXT2_ET_MMP_FAILED)
2822                         fprintf(stderr, "%s",
2823                              _("Couldn't find valid filesystem superblock.\n"));
2824
2825                 ext2fs_free(fs);
2826                 exit(1);
2827         }
2828         if (ext2fs_has_feature_journal_dev(fs->super)) {
2829                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2830                 ext2fs_free(fs);
2831                 exit(1);
2832         }
2833         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2834
2835         if (I_flag) {
2836                 /*
2837                  * Check the inode size is right so we can issue an
2838                  * error message and bail before setting up the tdb
2839                  * file.
2840                  */
2841                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2842                         fprintf(stderr, _("The inode size is already %lu\n"),
2843                                 new_inode_size);
2844                         rc = 1;
2845                         goto closefs;
2846                 }
2847                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2848                         fprintf(stderr, "%s",
2849                                 _("Shrinking inode size is not supported\n"));
2850                         rc = 1;
2851                         goto closefs;
2852                 }
2853                 if (new_inode_size > fs->blocksize) {
2854                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2855                                 new_inode_size, fs->blocksize);
2856                         rc = 1;
2857                         goto closefs;
2858                 }
2859                 check_fsck_needed(fs,
2860                         _("Resizing inodes could take some time."));
2861                 /*
2862                  * If inode resize is requested use the
2863                  * Undo I/O manager
2864                  */
2865                 undo_file = default_undo_file;
2866         }
2867
2868         /* Set up an undo file */
2869         if (undo_file && io_ptr_orig == NULL) {
2870                 io_ptr_orig = io_ptr;
2871                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2872                 if (retval) {
2873                         rc = 1;
2874                         goto closefs;
2875                 }
2876                 if (io_ptr != io_ptr_orig) {
2877                         ext2fs_close_free(&fs);
2878                         goto retry_open;
2879                 }
2880         }
2881
2882         sb = fs->super;
2883         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2884
2885         if (print_label) {
2886                 /* For e2label emulation */
2887                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2888                        sb->s_volume_name);
2889                 remove_error_table(&et_ext2_error_table);
2890                 goto closefs;
2891         }
2892
2893         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2894         if (retval) {
2895                 com_err("ext2fs_check_if_mount", retval,
2896                         _("while determining whether %s is mounted."),
2897                         device_name);
2898                 rc = 1;
2899                 goto closefs;
2900         }
2901         /* Normally we only need to write out the superblock */
2902         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2903
2904         if (c_flag) {
2905                 sb->s_max_mnt_count = max_mount_count;
2906                 ext2fs_mark_super_dirty(fs);
2907                 printf(_("Setting maximal mount count to %d\n"),
2908                        max_mount_count);
2909         }
2910         if (C_flag) {
2911                 sb->s_mnt_count = mount_count;
2912                 ext2fs_mark_super_dirty(fs);
2913                 printf(_("Setting current mount count to %d\n"), mount_count);
2914         }
2915         if (e_flag) {
2916                 sb->s_errors = errors;
2917                 ext2fs_mark_super_dirty(fs);
2918                 printf(_("Setting error behavior to %d\n"), errors);
2919         }
2920         if (g_flag) {
2921                 sb->s_def_resgid = resgid;
2922                 ext2fs_mark_super_dirty(fs);
2923                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2924         }
2925         if (i_flag) {
2926                 if ((unsigned long long)interval >= (1ULL << 32)) {
2927                         com_err(program_name, 0,
2928                                 _("interval between checks is too big (%lu)"),
2929                                 interval);
2930                         rc = 1;
2931                         goto closefs;
2932                 }
2933                 sb->s_checkinterval = interval;
2934                 ext2fs_mark_super_dirty(fs);
2935                 printf(_("Setting interval between checks to %lu seconds\n"),
2936                        interval);
2937         }
2938         if (m_flag) {
2939                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2940                                           ext2fs_blocks_count(sb) / 100.0);
2941                 ext2fs_mark_super_dirty(fs);
2942                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2943                         reserved_ratio, ext2fs_r_blocks_count(sb));
2944         }
2945         if (r_flag) {
2946                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2947                         com_err(program_name, 0,
2948                                 _("reserved blocks count is too big (%llu)"),
2949                                 reserved_blocks);
2950                         rc = 1;
2951                         goto closefs;
2952                 }
2953                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2954                 ext2fs_mark_super_dirty(fs);
2955                 printf(_("Setting reserved blocks count to %llu\n"),
2956                        reserved_blocks);
2957         }
2958         if (s_flag == 1) {
2959                 if (ext2fs_has_feature_sparse_super(sb)) {
2960                         fputs(_("\nThe filesystem already has sparse "
2961                                 "superblocks.\n"), stderr);
2962                 } else if (ext2fs_has_feature_meta_bg(sb)) {
2963                         fputs(_("\nSetting the sparse superblock flag not "
2964                                 "supported\nfor filesystems with "
2965                                 "the meta_bg feature enabled.\n"),
2966                                 stderr);
2967                         rc = 1;
2968                         goto closefs;
2969                 } else {
2970                         ext2fs_set_feature_sparse_super(sb);
2971                         sb->s_state &= ~EXT2_VALID_FS;
2972                         ext2fs_mark_super_dirty(fs);
2973                         printf(_("\nSparse superblock flag set.  %s"),
2974                                _(please_fsck));
2975                 }
2976         }
2977         if (s_flag == 0) {
2978                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2979                       stderr);
2980                 rc = 1;
2981                 goto closefs;
2982         }
2983         if (T_flag) {
2984                 sb->s_lastcheck = last_check_time;
2985                 ext2fs_mark_super_dirty(fs);
2986                 printf(_("Setting time filesystem last checked to %s\n"),
2987                        ctime(&last_check_time));
2988         }
2989         if (u_flag) {
2990                 sb->s_def_resuid = resuid;
2991                 ext2fs_mark_super_dirty(fs);
2992                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2993         }
2994         if (L_flag) {
2995                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2996                         fputs(_("Warning: label too long, truncating.\n"),
2997                               stderr);
2998                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2999                 strncpy(sb->s_volume_name, new_label,
3000                         sizeof(sb->s_volume_name));
3001                 ext2fs_mark_super_dirty(fs);
3002         }
3003         if (M_flag) {
3004                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3005                 strncpy(sb->s_last_mounted, new_last_mounted,
3006                         sizeof(sb->s_last_mounted));
3007                 ext2fs_mark_super_dirty(fs);
3008         }
3009         if (mntopts_cmd) {
3010                 rc = update_mntopts(fs, mntopts_cmd);
3011                 if (rc)
3012                         goto closefs;
3013         }
3014         if (features_cmd) {
3015                 rc = update_feature_set(fs, features_cmd);
3016                 if (rc)
3017                         goto closefs;
3018         }
3019         if (extended_cmd) {
3020                 rc = parse_extended_opts(fs, extended_cmd);
3021                 if (rc)
3022                         goto closefs;
3023                 if (clear_mmp && !f_flag) {
3024                         fputs(_("Error in using clear_mmp. "
3025                                 "It must be used with -f\n"),
3026                               stderr);
3027                         goto closefs;
3028                 }
3029         }
3030         if (clear_mmp) {
3031                 rc = ext2fs_mmp_clear(fs);
3032                 goto closefs;
3033         }
3034         if (journal_size || journal_device) {
3035                 rc = add_journal(fs);
3036                 if (rc)
3037                         goto closefs;
3038         }
3039
3040         if (Q_flag) {
3041                 if (mount_flags & EXT2_MF_MOUNTED) {
3042                         fputs(_("The quota feature may only be changed when "
3043                                 "the filesystem is unmounted.\n"), stderr);
3044                         rc = 1;
3045                         goto closefs;
3046                 }
3047                 handle_quota_options(fs);
3048         }
3049
3050         if (U_flag) {
3051                 int set_csum = 0;
3052                 dgrp_t i;
3053                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3054                 __u8 old_uuid[UUID_SIZE];
3055
3056                 if (ext2fs_has_group_desc_csum(fs)) {
3057                         /*
3058                          * Changing the UUID on a metadata_csum FS requires
3059                          * rewriting all metadata, which can race with a
3060                          * mounted fs.  Don't allow that unless we're saving
3061                          * the checksum seed.
3062                          */
3063                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3064                             !ext2fs_has_feature_csum_seed(fs->super) &&
3065                             ext2fs_has_feature_metadata_csum(fs->super)) {
3066                                 fputs(_("The UUID may only be "
3067                                         "changed when the filesystem is "
3068                                         "unmounted.\n"), stderr);
3069                                 fputs(_("If you only use kernels newer than "
3070                                         "v4.4, run 'tune2fs -O "
3071                                         "metadata_csum_seed' and re-run this "
3072                                         "command.\n"), stderr);
3073                                 try_confirm_csum_seed_support();
3074                                 exit(1);
3075                         }
3076                         if (!ext2fs_has_feature_csum_seed(fs->super))
3077                                 check_fsck_needed(fs,
3078                                         _("Setting UUID on a checksummed "
3079                                           "filesystem could take some time."));
3080
3081                         /*
3082                          * Determine if the block group checksums are
3083                          * correct so we know whether or not to set
3084                          * them later on.
3085                          */
3086                         for (i = 0; i < fs->group_desc_count; i++)
3087                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3088                                         break;
3089                         if (i >= fs->group_desc_count)
3090                                 set_csum = 1;
3091                 }
3092
3093                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3094                 if ((strcasecmp(new_UUID, "null") == 0) ||
3095                     (strcasecmp(new_UUID, "clear") == 0)) {
3096                         uuid_clear(sb->s_uuid);
3097                 } else if (strcasecmp(new_UUID, "time") == 0) {
3098                         uuid_generate_time(sb->s_uuid);
3099                 } else if (strcasecmp(new_UUID, "random") == 0) {
3100                         uuid_generate(sb->s_uuid);
3101                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3102                         com_err(program_name, 0, "%s",
3103                                 _("Invalid UUID format\n"));
3104                         rc = 1;
3105                         goto closefs;
3106                 }
3107                 ext2fs_init_csum_seed(fs);
3108                 if (set_csum) {
3109                         for (i = 0; i < fs->group_desc_count; i++)
3110                                 ext2fs_group_desc_csum_set(fs, i);
3111                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3112                 }
3113
3114                 /* If this is a journal dev, we need to copy UUID into jsb */
3115                 if (!(rc = get_journal_sb(fs, buf))) {
3116                         journal_superblock_t *jsb;
3117
3118                         jsb = (journal_superblock_t *) buf;
3119                         fputs(_("Need to update journal superblock.\n"), stdout);
3120                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3121
3122                         /* Writeback the journal superblock */
3123                         if ((rc = io_channel_write_blk64(fs->io,
3124                                 ext2fs_journal_sb_start(fs->blocksize),
3125                                         -SUPERBLOCK_SIZE, buf)))
3126                                 goto closefs;
3127                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3128                         goto closefs;
3129                 else {
3130                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3131
3132                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3133                                 goto closefs;
3134                 }
3135
3136                 ext2fs_mark_super_dirty(fs);
3137                 if (ext2fs_has_feature_metadata_csum(fs->super) &&
3138                     !ext2fs_has_feature_csum_seed(fs->super))
3139                         rewrite_checksums = 1;
3140         }
3141
3142         if (I_flag) {
3143                 if (mount_flags & EXT2_MF_MOUNTED) {
3144                         fputs(_("The inode size may only be "
3145                                 "changed when the filesystem is "
3146                                 "unmounted.\n"), stderr);
3147                         rc = 1;
3148                         goto closefs;
3149                 }
3150                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3151                         fputs(_("Changing the inode size not supported for "
3152                                 "filesystems with the flex_bg\n"
3153                                 "feature enabled.\n"),
3154                               stderr);
3155                         rc = 1;
3156                         goto closefs;
3157                 }
3158                 /*
3159                  * We want to update group descriptor also
3160                  * with the new free inode count
3161                  */
3162                 if (rewrite_checksums)
3163                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3164                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3165                 retval = resize_inode(fs, new_inode_size);
3166                 if (rewrite_checksums)
3167                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3168                 if (retval == 0) {
3169                         printf(_("Setting inode size %lu\n"),
3170                                                         new_inode_size);
3171                         rewrite_checksums = 1;
3172                 } else {
3173                         printf("%s", _("Failed to change inode size\n"));
3174                         rc = 1;
3175                         goto closefs;
3176                 }
3177         }
3178
3179         if (rewrite_checksums)
3180                 rewrite_metadata_checksums(fs);
3181
3182         if (l_flag)
3183                 list_super(sb);
3184         if (stride_set) {
3185                 sb->s_raid_stride = stride;
3186                 ext2fs_mark_super_dirty(fs);
3187                 printf(_("Setting stride size to %d\n"), stride);
3188         }
3189         if (stripe_width_set) {
3190                 sb->s_raid_stripe_width = stripe_width;
3191                 ext2fs_mark_super_dirty(fs);
3192                 printf(_("Setting stripe width to %d\n"), stripe_width);
3193         }
3194         if (ext_mount_opts) {
3195                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3196                         sizeof(fs->super->s_mount_opts));
3197                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3198                 ext2fs_mark_super_dirty(fs);
3199                 printf(_("Setting extended default mount options to '%s'\n"),
3200                        ext_mount_opts);
3201                 free(ext_mount_opts);
3202         }
3203
3204 #ifdef NO_RECOVERY
3205         /* Warn if file system needs recovery and it is opened for writing. */
3206         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3207             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3208             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3209                 fprintf(stderr,
3210 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3211   "\te2fsck -E journal_only %s\n\n"
3212   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3213   "by journal recovery.\n"), device_name);
3214         }
3215 #else
3216         /* Recover the journal if possible. */
3217         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3218             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3219                 errcode_t err;
3220
3221                 printf(_("Recovering journal.\n"));
3222                 err = ext2fs_run_ext3_journal(&fs);
3223                 if (err) {
3224                         com_err("tune2fs", err, "while recovering journal.\n");
3225                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3226                         goto closefs;
3227                 }
3228                 ext2fs_clear_feature_journal_needs_recovery(fs->super);
3229                 ext2fs_mark_super_dirty(fs);
3230         }
3231 #endif
3232
3233         free(device_name);
3234         remove_error_table(&et_ext2_error_table);
3235
3236 closefs:
3237         if (rc) {
3238                 ext2fs_mmp_stop(fs);
3239 #ifndef BUILD_AS_LIB
3240                 exit(1);
3241 #endif
3242         }
3243
3244         convert_64bit(fs, feature_64bit);
3245         return (ext2fs_close_free(&fs) ? 1 : 0);
3246 }