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 int enabling_casefold;
 105
 106 int journal_size, journal_fc_size, journal_flags;
 107 char *journal_device;
 108 static blk64_t journal_location = ~0LL;
 109
 110 static struct list_head blk_move_list;
 111
 112 struct blk_move {
 113         struct list_head list;
 114         blk64_t old_loc;
 115         blk64_t new_loc;
 116 };
 117
 118 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
 119
 120 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
 121
 122 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
 123 static const char *please_dir_fsck =
 124                 N_("Please run e2fsck -fD on the filesystem.\n");
 125
 126 #ifdef CONFIG_BUILD_FINDFS
 127 void do_findfs(int argc, char **argv);
 128 #endif
 129
 130 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
 131 int journal_enable_debug = -1;
 132 #endif
 133
 134 static void usage(void)
 135 {
 136         fprintf(stderr,
 137                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
 138                   "[-g group]\n"
 139                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 140                   "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
 141                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
 142                   "\t[-L volume_label] [-M last_mounted_dir]\n"
 143                   "\t[-O [^]feature[,...]] [-Q quota_options]\n"
 144                   "\t[-E extended-option[,...]] [-T last_check_time] "
 145                   "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
 146                 program_name);
 147         exit(1);
 148 }
 149
 150 static __u32 ok_features[3] = {
 151         /* Compat */
 152         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 153                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 154                 EXT4_FEATURE_COMPAT_FAST_COMMIT |
 155                 EXT4_FEATURE_COMPAT_STABLE_INODES,
 156         /* Incompat */
 157         EXT2_FEATURE_INCOMPAT_FILETYPE |
 158                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 159                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 160                 EXT4_FEATURE_INCOMPAT_EA_INODE|
 161                 EXT4_FEATURE_INCOMPAT_MMP |
 162                 EXT4_FEATURE_INCOMPAT_64BIT |
 163                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 164                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 165                 EXT4_FEATURE_INCOMPAT_LARGEDIR |
 166                 EXT4_FEATURE_INCOMPAT_CASEFOLD,
 167         /* R/O compat */
 168         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 169                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 170                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 171                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 172                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 173                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 174                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 175                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 176                 EXT4_FEATURE_RO_COMPAT_READONLY |
 177                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 178                 EXT4_FEATURE_RO_COMPAT_VERITY
 179 };
 180
 181 static __u32 clear_ok_features[3] = {
 182         /* Compat */
 183         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 184                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 185                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 186                 EXT4_FEATURE_COMPAT_FAST_COMMIT,
 187         /* Incompat */
 188         EXT2_FEATURE_INCOMPAT_FILETYPE |
 189                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 190                 EXT4_FEATURE_INCOMPAT_MMP |
 191                 EXT4_FEATURE_INCOMPAT_64BIT |
 192                 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
 193         /* R/O compat */
 194         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 195                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 196                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 197                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 198                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 199                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 200                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 201                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 202                 EXT4_FEATURE_RO_COMPAT_READONLY
 203 };
 204
 205 /**
 206  * Try to get journal super block if any
 207  */
 208 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 209 {
 210         int retval;
 211         journal_superblock_t *jsb;
 212
 213         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 214                 return EXT2_ET_UNSUPP_FEATURE;
 215         }
 216
 217         /* Get the journal superblock */
 218         if ((retval = io_channel_read_blk64(jfs->io,
 219             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 220                 com_err(program_name, retval, "%s",
 221                 _("while reading journal superblock"));
 222                 return retval;
 223         }
 224
 225         jsb = (journal_superblock_t *) buf;
 226         if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
 227             (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
 228                 fputs(_("Journal superblock not found!\n"), stderr);
 229                 return EXT2_ET_BAD_MAGIC;
 230         }
 231
 232         return 0;
 233 }
 234
 235 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
 236                           int nr_users)
 237 {
 238         int i;
 239         for (i = 0; i < nr_users; i++) {
 240                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 241                         return &s_users[i * UUID_SIZE];
 242         }
 243
 244         return NULL;
 245 }
 246
 247 /*
 248  * Remove an external journal from the filesystem
 249  */
 250 static int remove_journal_device(ext2_filsys fs)
 251 {
 252         char            *journal_path;
 253         ext2_filsys     jfs;
 254         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 255         journal_superblock_t    *jsb;
 256         int             i, nr_users;
 257         errcode_t       retval;
 258         int             commit_remove_journal = 0;
 259         io_manager      io_ptr;
 260
 261         if (f_flag)
 262                 commit_remove_journal = 1; /* force removal even if error */
 263
 264         uuid_unparse(fs->super->s_journal_uuid, buf);
 265         journal_path = blkid_get_devname(NULL, "UUID", buf);
 266
 267         if (!journal_path) {
 268                 journal_path =
 269                         ext2fs_find_block_device(fs->super->s_journal_dev);
 270                 if (!journal_path)
 271                         goto no_valid_journal;
 272         }
 273
 274 #ifdef CONFIG_TESTIO_DEBUG
 275         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 276                 io_ptr = test_io_manager;
 277                 test_io_backing_manager = unix_io_manager;
 278         } else
 279 #endif
 280                 io_ptr = unix_io_manager;
 281         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 282                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 283                              fs->blocksize, io_ptr, &jfs);
 284         if (retval) {
 285                 com_err(program_name, retval, "%s",
 286                         _("while trying to open external journal"));
 287                 goto no_valid_journal;
 288         }
 289
 290         if ((retval = get_journal_sb(jfs, buf))) {
 291                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 292                         fprintf(stderr, _("%s is not a journal device.\n"),
 293                                 journal_path);
 294                 goto no_valid_journal;
 295         }
 296
 297         jsb = (journal_superblock_t *) buf;
 298         /* Find the filesystem UUID */
 299         nr_users = ntohl(jsb->s_nr_users);
 300         if (nr_users > JBD2_USERS_MAX) {
 301                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
 302                                  "is too high (%d).\n"), nr_users);
 303                 commit_remove_journal = 1;
 304                 goto no_valid_journal;
 305         }
 306
 307         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 308                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 309                       stderr);
 310                 commit_remove_journal = 1;
 311                 goto no_valid_journal;
 312         }
 313         nr_users--;
 314         for (i = 0; i < nr_users; i++)
 315                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 316         jsb->s_nr_users = htonl(nr_users);
 317
 318         /* Write back the journal superblock */
 319         retval = io_channel_write_blk64(jfs->io,
 320                                         ext2fs_journal_sb_start(fs->blocksize),
 321                                         -SUPERBLOCK_SIZE, buf);
 322         if (retval) {
 323                 com_err(program_name, retval,
 324                         "while writing journal superblock.");
 325                 goto no_valid_journal;
 326         }
 327
 328         commit_remove_journal = 1;
 329
 330 no_valid_journal:
 331         if (commit_remove_journal == 0) {
 332                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 333                         "Use -f option to remove missing journal device.\n"),
 334                       stderr);
 335                 return 1;
 336         }
 337         fs->super->s_journal_dev = 0;
 338         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 339         uuid_clear(fs->super->s_journal_uuid);
 340         ext2fs_mark_super_dirty(fs);
 341         fputs(_("Journal removed\n"), stdout);
 342         free(journal_path);
 343
 344         return 0;
 345 }
 346
 347 /* Helper function for remove_journal_inode */
 348 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 349                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 350                                blk64_t ref_block EXT2FS_ATTR((unused)),
 351                                int ref_offset EXT2FS_ATTR((unused)),
 352                                void *private EXT2FS_ATTR((unused)))
 353 {
 354         blk64_t block;
 355         int     group;
 356
 357         block = *blocknr;
 358         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 359         group = ext2fs_group_of_blk2(fs, block);
 360         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 361         ext2fs_group_desc_csum_set(fs, group);
 362         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 363         return 0;
 364 }
 365
 366 /*
 367  * Remove the journal inode from the filesystem
 368  */
 369 static errcode_t remove_journal_inode(ext2_filsys fs)
 370 {
 371         struct ext2_inode       inode;
 372         errcode_t               retval;
 373         ext2_ino_t              ino = fs->super->s_journal_inum;
 374
 375         retval = ext2fs_read_inode(fs, ino,  &inode);
 376         if (retval) {
 377                 com_err(program_name, retval, "%s",
 378                         _("while reading journal inode"));
 379                 return retval;
 380         }
 381         if (ino == EXT2_JOURNAL_INO) {
 382                 retval = ext2fs_read_bitmaps(fs);
 383                 if (retval) {
 384                         com_err(program_name, retval, "%s",
 385                                 _("while reading bitmaps"));
 386                         return retval;
 387                 }
 388                 retval = ext2fs_block_iterate3(fs, ino,
 389                                                BLOCK_FLAG_READ_ONLY, NULL,
 390                                                release_blocks_proc, NULL);
 391                 if (retval) {
 392                         com_err(program_name, retval, "%s",
 393                                 _("while clearing journal inode"));
 394                         return retval;
 395                 }
 396                 memset(&inode, 0, sizeof(inode));
 397                 ext2fs_mark_bb_dirty(fs);
 398                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 399         } else
 400                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 401         retval = ext2fs_write_inode(fs, ino, &inode);
 402         if (retval) {
 403                 com_err(program_name, retval, "%s",
 404                         _("while writing journal inode"));
 405                 return retval;
 406         }
 407         fs->super->s_journal_inum = 0;
 408         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 409         ext2fs_mark_super_dirty(fs);
 410
 411         return 0;
 412 }
 413
 414 /*
 415  * Update the default mount options
 416  */
 417 static int update_mntopts(ext2_filsys fs, char *mntopts)
 418 {
 419         struct ext2_super_block *sb = fs->super;
 420
 421         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 422                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 423                         mntopts);
 424                 return 1;
 425         }
 426         ext2fs_mark_super_dirty(fs);
 427
 428         return 0;
 429 }
 430
 431 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
 432 {
 433         /* Refuse to modify anything but a freshly checked valid filesystem. */
 434         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 435             (fs->super->s_state & EXT2_ERROR_FS) ||
 436             (fs->super->s_lastcheck < fs->super->s_mtime)) {
 437                 puts(_(fsck_explain));
 438                 puts(_(please_fsck));
 439                 if (mount_flags & EXT2_MF_READONLY)
 440                         printf("%s", _("(and reboot afterwards!)\n"));
 441                 return 1;
 442         }
 443
 444         /* Give the admin a few seconds to bail out of a dangerous op. */
 445         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 446                 return 0;
 447
 448         puts(prompt);
 449         proceed_question(5);
 450
 451         return 0;
 452 }
 453
 454 static void request_dir_fsck_afterwards(ext2_filsys fs)
 455 {
 456         static int requested;
 457
 458         if (requested++)
 459                 return;
 460         fsck_requested++;
 461         fs->super->s_state &= ~EXT2_VALID_FS;
 462         puts(_(fsck_explain));
 463         puts(_(please_dir_fsck));
 464         if (mount_flags & EXT2_MF_READONLY)
 465                 printf("%s", _("(and reboot afterwards!)\n"));
 466 }
 467
 468 static void request_fsck_afterwards(ext2_filsys fs)
 469 {
 470         static int requested = 0;
 471
 472         if (requested++)
 473                 return;
 474         fsck_requested++;
 475         fs->super->s_state &= ~EXT2_VALID_FS;
 476         printf("\n%s\n", _(please_fsck));
 477         if (mount_flags & EXT2_MF_READONLY)
 478                 printf("%s", _("(and reboot afterwards!)\n"));
 479 }
 480
 481 static void convert_64bit(ext2_filsys fs, int direction)
 482 {
 483         /*
 484          * Is resize2fs going to demand a fsck run? Might as well tell the
 485          * user now.
 486          */
 487         if (!fsck_requested &&
 488             ((fs->super->s_state & EXT2_ERROR_FS) ||
 489              !(fs->super->s_state & EXT2_VALID_FS) ||
 490              fs->super->s_lastcheck < fs->super->s_mtime))
 491                 request_fsck_afterwards(fs);
 492         if (fsck_requested)
 493                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 494                         direction > 0 ? "-b" : "-s", fs->device_name);
 495         else
 496                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 497                         direction > 0 ? "-b" : "-s", fs->device_name);
 498
 499         if (undo_file)
 500                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 501         if (direction > 0)
 502                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 503         else
 504                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 505 }
 506
 507 /*
 508  * Rewrite directory blocks with checksums
 509  */
 510 struct rewrite_dir_context {
 511         char *buf;
 512         errcode_t errcode;
 513         ext2_ino_t dir;
 514         int is_htree:1;
 515         int clear_htree:1;
 516 };
 517
 518 static int rewrite_dir_block(ext2_filsys fs,
 519                              blk64_t    *blocknr,
 520                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 521                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 522                              int        ref_offset EXT2FS_ATTR((unused)),
 523                              void       *priv_data)
 524 {
 525         struct ext2_dx_countlimit *dcl = NULL;
 526         struct rewrite_dir_context *ctx = priv_data;
 527         int dcl_offset, changed = 0;
 528
 529         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 530                                               ctx->dir);
 531         if (ctx->errcode)
 532                 return BLOCK_ABORT;
 533
 534         /*
 535          * if htree node... Note that if we are clearing htree structures from
 536          * the directory, we treat the htree internal block as an ordinary leaf.
 537          * The code below will do the right thing and make space for checksum
 538          * there.
 539          */
 540         if (ctx->is_htree && !ctx->clear_htree)
 541                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 542                                          &dcl, &dcl_offset);
 543         if (dcl) {
 544                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 545                         /* Ensure limit is the max size */
 546                         int max_entries = (fs->blocksize - dcl_offset) /
 547                                           sizeof(struct ext2_dx_entry);
 548                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 549                                 changed = 1;
 550                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 551                         }
 552                 } else {
 553                         /* If htree block is full then rebuild the dir */
 554                         if (ext2fs_le16_to_cpu(dcl->count) ==
 555                             ext2fs_le16_to_cpu(dcl->limit)) {
 556                                 request_dir_fsck_afterwards(fs);
 557                                 return 0;
 558                         }
 559                         /*
 560                          * Ensure dcl->limit is small enough to leave room for
 561                          * the checksum tail.
 562                          */
 563                         int max_entries = (fs->blocksize - (dcl_offset +
 564                                                 sizeof(struct ext2_dx_tail))) /
 565                                           sizeof(struct ext2_dx_entry);
 566                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 567                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 568                         /* Always rewrite checksum */
 569                         changed = 1;
 570                 }
 571         } else {
 572                 unsigned int rec_len, name_size;
 573                 char *top = ctx->buf + fs->blocksize;
 574                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 575                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 576
 577                 /* Find last and penultimate dirent */
 578                 while ((char *)de < top) {
 579                         penultimate_de = last_de;
 580                         last_de = de;
 581                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 582                         if (!ctx->errcode && !rec_len)
 583                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 584                         if (ctx->errcode)
 585                                 return BLOCK_ABORT;
 586                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 587                 }
 588                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 589                 if (ctx->errcode)
 590                         return BLOCK_ABORT;
 591                 name_size = ext2fs_dirent_name_len(last_de);
 592
 593                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 594                         if (!penultimate_de)
 595                                 return 0;
 596                         if (last_de->inode ||
 597                             name_size ||
 598                             rec_len != sizeof(struct ext2_dir_entry_tail))
 599                                 return 0;
 600                         /*
 601                          * The last dirent is unused and the right length to
 602                          * have stored a checksum.  Erase it.
 603                          */
 604                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 605                                                           &rec_len);
 606                         if (!rec_len)
 607                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 608                         if (ctx->errcode)
 609                                 return BLOCK_ABORT;
 610                         ext2fs_set_rec_len(fs, rec_len +
 611                                         sizeof(struct ext2_dir_entry_tail),
 612                                         penultimate_de);
 613                         changed = 1;
 614                 } else {
 615                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 616                         struct ext2_dir_entry_tail *t;
 617
 618                         /*
 619                          * If the last dirent looks like the tail, just update
 620                          * the checksum.
 621                          */
 622                         if (!last_de->inode &&
 623                             rec_len == csum_size) {
 624                                 t = (struct ext2_dir_entry_tail *)last_de;
 625                                 t->det_reserved_name_len =
 626                                                 EXT2_DIR_NAME_LEN_CSUM;
 627                                 changed = 1;
 628                                 goto out;
 629                         }
 630                         if (name_size & 3)
 631                                 name_size = (name_size & ~3) + 4;
 632                         /* If there's not enough space for the tail, e2fsck */
 633                         if (rec_len <= (8 + name_size + csum_size)) {
 634                                 request_dir_fsck_afterwards(fs);
 635                                 return 0;
 636                         }
 637                         /* Shorten that last de and insert the tail */
 638                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 639                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 640                         ext2fs_initialize_dirent_tail(fs, t);
 641
 642                         /* Always update checksum */
 643                         changed = 1;
 644                 }
 645         }
 646
 647 out:
 648         if (!changed)
 649                 return 0;
 650
 651         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 652                                                0, ctx->dir);
 653         if (ctx->errcode)
 654                 return BLOCK_ABORT;
 655
 656         return 0;
 657 }
 658
 659 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 660                                    struct ext2_inode *inode)
 661 {
 662         errcode_t       retval;
 663         struct rewrite_dir_context ctx;
 664
 665         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 666         if (retval)
 667                 return retval;
 668
 669         ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
 670         ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
 671         ctx.dir = dir;
 672         ctx.errcode = 0;
 673         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 674                                                 BLOCK_FLAG_DATA_ONLY,
 675                                        0, rewrite_dir_block, &ctx);
 676
 677         ext2fs_free_mem(&ctx.buf);
 678         if (retval)
 679                 return retval;
 680
 681         if (ctx.is_htree && ctx.clear_htree) {
 682                 inode->i_flags &= ~EXT2_INDEX_FL;
 683                 retval = ext2fs_write_inode(fs, dir, inode);
 684                 if (retval)
 685                         return retval;
 686         }
 687
 688         return ctx.errcode;
 689 }
 690
 691 /*
 692  * Context information that does not change across rewrite_one_inode()
 693  * invocations.
 694  */
 695 struct rewrite_context {
 696         ext2_filsys fs;
 697         struct ext2_inode *zero_inode;
 698         char *ea_buf;
 699         int inode_size;
 700 };
 701
 702 #define fatal_err(code, args...)                \
 703         do {                                    \
 704                 com_err(__func__, code, args);  \
 705                 exit(1);                        \
 706         } while (0);
 707
 708 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 709                                  struct ext2_inode *inode)
 710 {
 711         errcode_t retval;
 712         ext2_file_t file;
 713         __u32 hash;
 714
 715         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 716         if (retval)
 717                 fatal_err(retval, "open ea_inode");
 718         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 719                                   NULL);
 720         if (retval)
 721                 fatal_err(retval, "read ea_inode");
 722         retval = ext2fs_file_close(file);
 723         if (retval)
 724                 fatal_err(retval, "close ea_inode");
 725
 726         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 727                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 728         ext2fs_set_ea_inode_hash(inode, hash);
 729 }
 730
 731 static int update_xattr_entry_hashes(ext2_filsys fs,
 732                                      struct ext2_ext_attr_entry *entry,
 733                                      struct ext2_ext_attr_entry *end)
 734 {
 735         int modified = 0;
 736         errcode_t retval;
 737
 738         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 739                 if (entry->e_value_inum) {
 740                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 741                                                              &entry->e_hash);
 742                         if (retval)
 743                                 fatal_err(retval, "hash ea_inode entry");
 744                         modified = 1;
 745                 }
 746                 entry = EXT2_EXT_ATTR_NEXT(entry);
 747         }
 748         return modified;
 749 }
 750
 751 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 752                                        struct ext2_inode_large *inode)
 753 {
 754         struct ext2_ext_attr_entry *start, *end;
 755         __u32 *ea_magic;
 756
 757         if (inode->i_extra_isize == 0)
 758                 return;
 759
 760         if (inode->i_extra_isize & 3 ||
 761             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 762                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 763
 764         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 765                                 inode->i_extra_isize);
 766         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 767                 return;
 768
 769         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 770         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 771
 772         update_xattr_entry_hashes(ctx->fs, start, end);
 773 }
 774
 775 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 776                                       char *block_buf)
 777 {
 778         struct ext2_ext_attr_header *header;
 779         struct ext2_ext_attr_entry *start, *end;
 780
 781         header = (struct ext2_ext_attr_header *)block_buf;
 782         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 783                 return;
 784
 785         start = (struct ext2_ext_attr_entry *)(header+1);
 786         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 787
 788         if (update_xattr_entry_hashes(ctx->fs, start, end))
 789                 ext2fs_ext_attr_block_rehash(header, end);
 790 }
 791
 792 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 793                               struct ext2_inode *inode)
 794 {
 795         blk64_t file_acl_block;
 796         errcode_t retval;
 797
 798         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 799                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 800                         return;
 801                 memset(inode, 0, ctx->inode_size);
 802         }
 803
 804         if (inode->i_flags & EXT4_EA_INODE_FL)
 805                 update_ea_inode_hash(ctx, ino, inode);
 806
 807         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 808                 update_inline_xattr_hashes(ctx,
 809                                            (struct ext2_inode_large *)inode);
 810
 811         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 812         if (retval)
 813                 fatal_err(retval, "while writing inode");
 814
 815         retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
 816         if (retval)
 817                 fatal_err(retval, "while rewriting extents");
 818
 819         if (LINUX_S_ISDIR(inode->i_mode) &&
 820             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 821                 retval = rewrite_directory(ctx->fs, ino, inode);
 822                 if (retval)
 823                         fatal_err(retval, "while rewriting directories");
 824         }
 825
 826         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 827         if (!file_acl_block)
 828                 return;
 829
 830         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 831                                        ino);
 832         if (retval)
 833                 fatal_err(retval, "while rewriting extended attribute");
 834
 835         update_block_xattr_hashes(ctx, ctx->ea_buf);
 836         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 837                                         ino);
 838         if (retval)
 839                 fatal_err(retval, "while rewriting extended attribute");
 840 }
 841
 842 #define REWRITE_EA_FL           0x01    /* Rewrite EA inodes */
 843 #define REWRITE_DIR_FL          0x02    /* Rewrite directories */
 844 #define REWRITE_NONDIR_FL       0x04    /* Rewrite other inodes */
 845 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
 846
 847 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
 848 {
 849         ext2_inode_scan scan;
 850         errcode_t       retval;
 851         ext2_ino_t      ino;
 852         struct ext2_inode *inode;
 853         int rewrite;
 854
 855         retval = ext2fs_get_mem(ctx->inode_size, &inode);
 856         if (retval)
 857                 fatal_err(retval, "while allocating memory");
 858
 859         retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
 860         if (retval)
 861                 fatal_err(retval, "while opening inode scan");
 862
 863         do {
 864                 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 865                                                     ctx->inode_size);
 866                 if (retval)
 867                         fatal_err(retval, "while getting next inode");
 868                 if (!ino)
 869                         break;
 870
 871                 rewrite = 0;
 872                 if (inode->i_flags & EXT4_EA_INODE_FL) {
 873                         if (flags & REWRITE_EA_FL)
 874                                 rewrite = 1;
 875                 } else if (LINUX_S_ISDIR(inode->i_mode)) {
 876                         if (flags & REWRITE_DIR_FL)
 877                                 rewrite = 1;
 878                 } else {
 879                         if (flags & REWRITE_NONDIR_FL)
 880                                 rewrite = 1;
 881                 }
 882                 if (rewrite)
 883                         rewrite_one_inode(ctx, ino, inode);
 884         } while (ino);
 885         ext2fs_close_inode_scan(scan);
 886         ext2fs_free_mem(&inode);
 887 }
 888
 889 /*
 890  * Forcibly rewrite checksums in inodes specified by 'flags'
 891  */
 892 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
 893 {
 894         struct rewrite_context ctx = {
 895                 .fs = fs,
 896                 .inode_size = EXT2_INODE_SIZE(fs->super),
 897         };
 898         errcode_t retval;
 899
 900         if (fs->super->s_creator_os == EXT2_OS_HURD)
 901                 return;
 902
 903         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 904         if (retval)
 905                 fatal_err(retval, "while allocating memory");
 906
 907         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 908         if (retval)
 909                 fatal_err(retval, "while allocating memory");
 910
 911         /*
 912          * Extended attribute inodes have a lookup hash that needs to be
 913          * recalculated with the new csum_seed. Other inodes referencing xattr
 914          * inodes need this value to be up to date. That's why we do two passes:
 915          *
 916          * pass 1: update xattr inodes to update their lookup hash as well as
 917          *         other checksums.
 918          *
 919          * pass 2: go over other inodes to update their checksums.
 920          */
 921         if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
 922                 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
 923         flags &= ~REWRITE_EA_FL;
 924         rewrite_inodes_pass(&ctx, flags);
 925
 926         ext2fs_free_mem(&ctx.zero_inode);
 927         ext2fs_free_mem(&ctx.ea_buf);
 928 }
 929
 930 static void rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
 931 {
 932         errcode_t retval;
 933         dgrp_t i;
 934
 935         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 936         ext2fs_init_csum_seed(fs);
 937         for (i = 0; i < fs->group_desc_count; i++)
 938                 ext2fs_group_desc_csum_set(fs, i);
 939         retval = ext2fs_read_bitmaps(fs);
 940         if (retval)
 941                 fatal_err(retval, "while reading bitmaps");
 942         rewrite_inodes(fs, flags);
 943         ext2fs_mark_ib_dirty(fs);
 944         ext2fs_mark_bb_dirty(fs);
 945         ext2fs_mmp_update2(fs, 1);
 946         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 947         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 948         if (ext2fs_has_feature_metadata_csum(fs->super))
 949                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 950         else
 951                 fs->super->s_checksum_type = 0;
 952         ext2fs_mark_super_dirty(fs);
 953 }
 954
 955 static void enable_uninit_bg(ext2_filsys fs)
 956 {
 957         struct ext2_group_desc *gd;
 958         dgrp_t i;
 959
 960         for (i = 0; i < fs->group_desc_count; i++) {
 961                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 962                 gd->bg_itable_unused = 0;
 963                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 964                 ext2fs_group_desc_csum_set(fs, i);
 965         }
 966         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 967 }
 968
 969 static errcode_t zero_empty_inodes(ext2_filsys fs)
 970 {
 971         int length = EXT2_INODE_SIZE(fs->super);
 972         struct ext2_inode *inode = NULL;
 973         ext2_inode_scan scan;
 974         errcode_t       retval;
 975         ext2_ino_t      ino;
 976
 977         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 978         if (retval)
 979                 goto out;
 980
 981         retval = ext2fs_get_mem(length, &inode);
 982         if (retval)
 983                 goto out;
 984
 985         do {
 986                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 987                 if (retval)
 988                         goto out;
 989                 if (!ino)
 990                         break;
 991                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 992                         memset(inode, 0, length);
 993                         retval = ext2fs_write_inode_full(fs, ino, inode,
 994                                                          length);
 995                         if (retval)
 996                                 goto out;
 997                 }
 998         } while (1);
 999
1000 out:
1001         ext2fs_free_mem(&inode);
1002         ext2fs_close_inode_scan(scan);
1003         return retval;
1004 }
1005
1006 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1007 {
1008         struct ext2_group_desc *gd;
1009         dgrp_t i;
1010         errcode_t retval;
1011         blk64_t b, c, d;
1012
1013         /* Load bitmaps to ensure that the uninit ones get written out */
1014         fs->super->s_feature_ro_compat |= csum_feature_flag;
1015         retval = ext2fs_read_bitmaps(fs);
1016         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1017         if (retval) {
1018                 com_err("disable_uninit_bg", retval,
1019                         "while reading bitmaps");
1020                 request_fsck_afterwards(fs);
1021                 return retval;
1022         }
1023         ext2fs_mark_ib_dirty(fs);
1024         ext2fs_mark_bb_dirty(fs);
1025
1026         /* If we're only turning off uninit_bg, zero the inodes */
1027         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1028                 retval = zero_empty_inodes(fs);
1029                 if (retval) {
1030                         com_err("disable_uninit_bg", retval,
1031                                 "while zeroing unused inodes");
1032                         request_fsck_afterwards(fs);
1033                         return retval;
1034                 }
1035         }
1036
1037         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1038         for (i = 0; i < fs->group_desc_count; i++) {
1039                 b = ext2fs_block_bitmap_loc(fs, i);
1040                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1041                 b = ext2fs_inode_bitmap_loc(fs, i);
1042                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1043
1044                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1045                 if (retval == 0 && b)
1046                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1047                 if (retval == 0 && c)
1048                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1049                 if (retval == 0 && d)
1050                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1051                 if (retval) {
1052                         com_err("disable_uninit_bg", retval,
1053                                 "while initializing block bitmaps");
1054                         request_fsck_afterwards(fs);
1055                 }
1056
1057                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1058                 gd->bg_itable_unused = 0;
1059                 gd->bg_flags = 0;
1060                 ext2fs_group_desc_csum_set(fs, i);
1061         }
1062         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1063         ext2fs_mark_super_dirty(fs);
1064
1065         return 0;
1066 }
1067
1068 static void
1069 try_confirm_csum_seed_support(void)
1070 {
1071         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1072                 fputs(_("WARNING: Could not confirm kernel support for "
1073                         "metadata_csum_seed.\n  This requires Linux >= "
1074                         "v4.4.\n"), stderr);
1075 }
1076
1077 /*
1078  * Update the feature set as provided by the user.
1079  */
1080 static int update_feature_set(ext2_filsys fs, char *features)
1081 {
1082         struct ext2_super_block *sb = fs->super;
1083         __u32           old_features[3];
1084         int             type_err;
1085         unsigned int    mask_err;
1086         errcode_t       err;
1087         enum quota_type qtype;
1088
1089 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1090                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1091 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1092                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1093 #define FEATURE_CHANGED(type, mask) ((mask) & \
1094                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1095
1096         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1097         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1098         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1099
1100         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1101                               ok_features, clear_ok_features,
1102                               &type_err, &mask_err)) {
1103                 if (!mask_err)
1104                         fprintf(stderr,
1105                                 _("Invalid filesystem option set: %s\n"),
1106                                 features);
1107                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1108                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1109                                           "not supported.\n"),
1110                                 e2p_feature2string(type_err &
1111                                                    E2P_FEATURE_TYPE_MASK,
1112                                                    mask_err));
1113                 else
1114                         fprintf(stderr, _("Setting filesystem feature '%s' "
1115                                           "not supported.\n"),
1116                                 e2p_feature2string(type_err, mask_err));
1117                 return 1;
1118         }
1119
1120         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1121                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1122                     !(mount_flags & EXT2_MF_READONLY)) {
1123                         fputs(_("The has_journal feature may only be "
1124                                 "cleared when the filesystem is\n"
1125                                 "unmounted or mounted "
1126                                 "read-only.\n"), stderr);
1127                         return 1;
1128                 }
1129                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1130                     f_flag < 2) {
1131                         fputs(_("The needs_recovery flag is set.  "
1132                                 "Please run e2fsck before clearing\n"
1133                                 "the has_journal flag.\n"), stderr);
1134                         return 1;
1135                 }
1136                 if (sb->s_journal_inum) {
1137                         if (remove_journal_inode(fs))
1138                                 return 1;
1139                 }
1140                 if (sb->s_journal_dev) {
1141                         if (remove_journal_device(fs))
1142                                 return 1;
1143                 }
1144         }
1145
1146         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1147                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1148                 if (ext2fs_has_feature_meta_bg(sb)) {
1149                         fputs(_("Setting filesystem feature 'sparse_super' "
1150                                 "not supported\nfor filesystems with "
1151                                 "the meta_bg feature enabled.\n"),
1152                                 stderr);
1153                         return 1;
1154                 }
1155         }
1156
1157         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1158                 int error;
1159
1160                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1161                     (mount_flags & EXT2_MF_READONLY)) {
1162                         fputs(_("The multiple mount protection feature can't\n"
1163                                 "be set if the filesystem is mounted or\n"
1164                                 "read-only.\n"), stderr);
1165                         return 1;
1166                 }
1167
1168                 error = ext2fs_mmp_init(fs);
1169                 if (error) {
1170                         fputs(_("\nError while enabling multiple mount "
1171                                 "protection feature."), stderr);
1172                         return 1;
1173                 }
1174
1175                 /*
1176                  * We want to update group desc with the new free blocks count
1177                  */
1178                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1179
1180                 printf(_("Multiple mount protection has been enabled "
1181                          "with update interval %ds.\n"),
1182                        sb->s_mmp_update_interval);
1183         }
1184
1185         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1186                 int error;
1187
1188                 if (mount_flags & EXT2_MF_READONLY) {
1189                         fputs(_("The multiple mount protection feature cannot\n"
1190                                 "be disabled if the filesystem is readonly.\n"),
1191                                 stderr);
1192                         return 1;
1193                 }
1194
1195                 error = ext2fs_read_bitmaps(fs);
1196                 if (error) {
1197                         fputs(_("Error while reading bitmaps\n"), stderr);
1198                         return 1;
1199                 }
1200
1201                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1202                 if (error) {
1203                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1204
1205                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1206                                 printf(_("Magic number in MMP block does not "
1207                                          "match. expected: %x, actual: %x\n"),
1208                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1209                         else
1210                                 com_err(program_name, error, "%s",
1211                                         _("while reading MMP block."));
1212                         goto mmp_error;
1213                 }
1214
1215                 /* We need to force out the group descriptors as well */
1216                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1217                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1218 mmp_error:
1219                 sb->s_mmp_block = 0;
1220                 sb->s_mmp_update_interval = 0;
1221         }
1222
1223         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1224                 /*
1225                  * If adding a journal flag, let the create journal
1226                  * code below handle setting the flag and creating the
1227                  * journal.  We supply a default size if necessary.
1228                  */
1229                 if (!journal_size)
1230                         journal_size = -1;
1231                 ext2fs_clear_feature_journal(sb);
1232         }
1233
1234         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1235                 if (!sb->s_def_hash_version)
1236                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1237                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1238                         uuid_generate((unsigned char *) sb->s_hash_seed);
1239         }
1240
1241         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1242             ext2fs_has_feature_metadata_csum(sb)) {
1243                 if (check_fsck_needed(fs,
1244                         _("Disabling directory index on filesystem with "
1245                           "checksums could take some time.")))
1246                         return 1;
1247                 if (mount_flags & EXT2_MF_MOUNTED) {
1248                         fputs(_("Cannot disable dir_index on a mounted "
1249                                 "filesystem!\n"), stderr);
1250                         exit(1);
1251                 }
1252                 /*
1253                  * Clearing dir_index on checksummed filesystem requires
1254                  * rewriting all directories to update checksums.
1255                  */
1256                 rewrite_checksums |= REWRITE_DIR_FL;
1257         }
1258
1259         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1260                 if (ext2fs_check_desc(fs)) {
1261                         fputs(_("Clearing the flex_bg flag would "
1262                                 "cause the the filesystem to be\n"
1263                                 "inconsistent.\n"), stderr);
1264                         return 1;
1265                 }
1266         }
1267
1268         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1269                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1270                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1271                     !(mount_flags & EXT2_MF_READONLY)) {
1272                         fputs(_("The huge_file feature may only be "
1273                                 "cleared when the filesystem is\n"
1274                                 "unmounted or mounted "
1275                                 "read-only.\n"), stderr);
1276                         return 1;
1277                 }
1278         }
1279
1280         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1281                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1282                 if (check_fsck_needed(fs,
1283                         _("Enabling checksums could take some time.")))
1284                         return 1;
1285                 if (mount_flags & EXT2_MF_MOUNTED) {
1286                         fputs(_("Cannot enable metadata_csum on a mounted "
1287                                 "filesystem!\n"), stderr);
1288                         return 1;
1289                 }
1290                 if (!ext2fs_has_feature_extents(fs->super))
1291                         printf("%s",
1292                                _("Extents are not enabled.  The file extent "
1293                                  "tree can be checksummed, whereas block maps "
1294                                  "cannot.  Not enabling extents reduces the "
1295                                  "coverage of metadata checksumming.  "
1296                                  "Re-run with -O extent to rectify.\n"));
1297                 if (!ext2fs_has_feature_64bit(fs->super))
1298                         printf("%s",
1299                                _("64-bit filesystem support is not enabled.  "
1300                                  "The larger fields afforded by this feature "
1301                                  "enable full-strength checksumming.  "
1302                                  "Run resize2fs -b to rectify.\n"));
1303                 rewrite_checksums = REWRITE_ALL;
1304                 /* metadata_csum supersedes uninit_bg */
1305                 ext2fs_clear_feature_gdt_csum(fs->super);
1306
1307                 /* if uninit_bg was previously off, rewrite group desc */
1308                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1309                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1310                         enable_uninit_bg(fs);
1311
1312                 /*
1313                  * Since metadata_csum supersedes uninit_bg, pretend like
1314                  * uninit_bg has been off all along.
1315                  */
1316                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1317                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1318         }
1319
1320         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1321                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1322                 __u32   test_features[3];
1323
1324                 if (check_fsck_needed(fs,
1325                         _("Disabling checksums could take some time.")))
1326                         return 1;
1327                 if (mount_flags & EXT2_MF_MOUNTED) {
1328                         fputs(_("Cannot disable metadata_csum on a mounted "
1329                                 "filesystem!\n"), stderr);
1330                         return 1;
1331                 }
1332                 rewrite_checksums = REWRITE_ALL;
1333
1334                 /* Enable uninit_bg unless the user expressly turned it off */
1335                 memcpy(test_features, old_features, sizeof(test_features));
1336                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1337                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1338                 e2p_edit_feature2(features, test_features, ok_features,
1339                                   clear_ok_features, NULL, NULL);
1340                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1341                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1342                         ext2fs_set_feature_gdt_csum(fs->super);
1343
1344                 /*
1345                  * If we're turning off metadata_csum and not turning on
1346                  * uninit_bg, rewrite group desc.
1347                  */
1348                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1349                         err = disable_uninit_bg(fs,
1350                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1351                         if (err)
1352                                 return 1;
1353                 } else
1354                         /*
1355                          * metadata_csum previously provided uninit_bg, so if
1356                          * we're also setting the uninit_bg feature bit,
1357                          * pretend like it was previously enabled.  Checksums
1358                          * will be rewritten with crc16 later.
1359                          */
1360                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1361                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1362                 fs->super->s_checksum_seed = 0;
1363                 ext2fs_clear_feature_csum_seed(fs->super);
1364         }
1365
1366         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1367                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1368                 if (mount_flags & EXT2_MF_MOUNTED) {
1369                         fputs(_("Cannot enable uninit_bg on a mounted "
1370                                 "filesystem!\n"), stderr);
1371                         return 1;
1372                 }
1373
1374                 /* Do not enable uninit_bg when metadata_csum enabled */
1375                 if (ext2fs_has_feature_metadata_csum(fs->super))
1376                         ext2fs_clear_feature_gdt_csum(fs->super);
1377                 else
1378                         enable_uninit_bg(fs);
1379         }
1380
1381         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1382                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1383                 if (mount_flags & EXT2_MF_MOUNTED) {
1384                         fputs(_("Cannot disable uninit_bg on a mounted "
1385                                 "filesystem!\n"), stderr);
1386                         return 1;
1387                 }
1388
1389                 err = disable_uninit_bg(fs,
1390                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1391                 if (err)
1392                         return 1;
1393         }
1394
1395         /*
1396          * We don't actually toggle 64bit; resize2fs does that.  But this
1397          * must come after the metadata_csum feature_on so that it won't
1398          * complain about the lack of 64bit.
1399          */
1400         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1401                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1402                 if (mount_flags & EXT2_MF_MOUNTED) {
1403                         fprintf(stderr, _("Cannot enable 64-bit mode "
1404                                           "while mounted!\n"));
1405                         return 1;
1406                 }
1407                 ext2fs_clear_feature_64bit(sb);
1408                 feature_64bit = 1;
1409         }
1410         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1411                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1412                 if (mount_flags & EXT2_MF_MOUNTED) {
1413                         fprintf(stderr, _("Cannot disable 64-bit mode "
1414                                           "while mounted!\n"));
1415                         return 1;
1416                 }
1417                 ext2fs_set_feature_64bit(sb);
1418                 feature_64bit = -1;
1419         }
1420
1421         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1422                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1423                 /*
1424                  * Set the Q_flag here and handle the quota options in the code
1425                  * below.
1426                  */
1427                 if (!Q_flag) {
1428                         Q_flag = 1;
1429                         /* Enable usr/grp quota by default */
1430                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1431                                 if (qtype != PRJQUOTA)
1432                                         quota_enable[qtype] = QOPT_ENABLE;
1433                                 else
1434                                         quota_enable[qtype] = QOPT_DISABLE;
1435                         }
1436                 }
1437                 ext2fs_clear_feature_quota(sb);
1438         }
1439
1440         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1441                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1442                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1443                         fprintf(stderr, _("Cannot enable project feature; "
1444                                           "inode size too small.\n"));
1445                         return 1;
1446                 }
1447                 Q_flag = 1;
1448                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1449         }
1450
1451         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1452                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1453                 Q_flag = 1;
1454                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1455         }
1456
1457         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1458                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1459                 /*
1460                  * Set the Q_flag here and handle the quota options in the code
1461                  * below.
1462                  */
1463                 if (Q_flag)
1464                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1465                                 "arguments.\n"), stderr);
1466                 Q_flag = 1;
1467                 /* Disable all quota by default */
1468                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1469                         quota_enable[qtype] = QOPT_DISABLE;
1470         }
1471
1472         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1473                 fs->super->s_encrypt_algos[0] =
1474                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1475                 fs->super->s_encrypt_algos[1] =
1476                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1477         }
1478
1479         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1480                 if (mount_flags & EXT2_MF_MOUNTED) {
1481                         fputs(_("The casefold feature may only be enabled when "
1482                                 "the filesystem is unmounted.\n"), stderr);
1483                         return 1;
1484                 }
1485                 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1486                 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1487                 enabling_casefold = 1;
1488         }
1489
1490         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1491                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1492                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1493                         fputs(_("Setting feature 'metadata_csum_seed' "
1494                                 "is only supported\non filesystems with "
1495                                 "the metadata_csum feature enabled.\n"),
1496                                 stderr);
1497                         return 1;
1498                 }
1499                 try_confirm_csum_seed_support();
1500                 fs->super->s_checksum_seed = fs->csum_seed;
1501         }
1502
1503         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1504                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1505                 __le32 uuid_seed;
1506
1507                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1508                                         sizeof(fs->super->s_uuid));
1509                 if (fs->super->s_checksum_seed != uuid_seed) {
1510                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1511                                 fputs(_("UUID has changed since enabling "
1512                 "metadata_csum.  Filesystem must be unmounted "
1513                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1514                                       stderr);
1515                                 return 1;
1516                         }
1517                         if (check_fsck_needed(fs, _("Recalculating checksums "
1518                                                     "could take some time.")))
1519                                 return 1;
1520                         rewrite_checksums = REWRITE_ALL;
1521                 }
1522         }
1523
1524         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1525             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1526              sb->s_feature_incompat))
1527                 ext2fs_update_dynamic_rev(fs);
1528
1529         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1530                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1531             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1532                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1533             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1534                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1535             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1536                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1537             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1538                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1539                 request_fsck_afterwards(fs);
1540
1541         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1542             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1543             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1544                 ext2fs_mark_super_dirty(fs);
1545
1546         return 0;
1547 }
1548
1549 /*
1550  * Add a journal to the filesystem.
1551  */
1552 static int add_journal(ext2_filsys fs)
1553 {
1554         struct ext2fs_journal_params    jparams;
1555         errcode_t       retval;
1556         ext2_filsys     jfs;
1557         io_manager      io_ptr;
1558
1559         if (ext2fs_has_feature_journal(fs->super)) {
1560                 fputs(_("The filesystem already has a journal.\n"), stderr);
1561                 goto err;
1562         }
1563         if (journal_device) {
1564                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1565                                         NULL))
1566                         proceed_question(-1);
1567                 check_mount(journal_device, 0, _("journal"));
1568 #ifdef CONFIG_TESTIO_DEBUG
1569                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1570                         io_ptr = test_io_manager;
1571                         test_io_backing_manager = unix_io_manager;
1572                 } else
1573 #endif
1574                         io_ptr = unix_io_manager;
1575                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1576                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1577                                      fs->blocksize, io_ptr, &jfs);
1578                 if (retval) {
1579                         com_err(program_name, retval,
1580                                 _("\n\twhile trying to open journal on %s\n"),
1581                                 journal_device);
1582                         goto err;
1583                 }
1584                 printf(_("Creating journal on device %s: "),
1585                        journal_device);
1586                 fflush(stdout);
1587
1588                 retval = ext2fs_add_journal_device(fs, jfs);
1589                 ext2fs_close_free(&jfs);
1590                 if (retval) {
1591                         com_err(program_name, retval,
1592                                 _("while adding filesystem to journal on %s"),
1593                                 journal_device);
1594                         goto err;
1595                 }
1596                 fputs(_("done\n"), stdout);
1597         } else if (journal_size) {
1598                 fputs(_("Creating journal inode: "), stdout);
1599                 fflush(stdout);
1600                 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1601
1602                 if (journal_location_string)
1603                         journal_location =
1604                                 parse_num_blocks2(journal_location_string,
1605                                                   fs->super->s_log_block_size);
1606                 retval = ext2fs_add_journal_inode3(fs, &jparams,
1607                                                    journal_location,
1608                                                    journal_flags);
1609                 if (retval) {
1610                         fprintf(stderr, "\n");
1611                         com_err(program_name, retval, "%s",
1612                                 _("\n\twhile trying to create journal file"));
1613                         return retval;
1614                 } else
1615                         fputs(_("done\n"), stdout);
1616                 /*
1617                  * If the filesystem wasn't mounted, we need to force
1618                  * the block group descriptors out.
1619                  */
1620                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1621                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1622         }
1623         print_check_message(fs->super->s_max_mnt_count,
1624                             fs->super->s_checkinterval);
1625         return 0;
1626
1627 err:
1628         free(journal_device);
1629         return 1;
1630 }
1631
1632 static int handle_quota_options(ext2_filsys fs)
1633 {
1634         errcode_t retval;
1635         quota_ctx_t qctx;
1636         ext2_ino_t qf_ino;
1637         enum quota_type qtype;
1638         unsigned int qtype_bits = 0;
1639         int need_dirty = 0;
1640
1641         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1642                 if (quota_enable[qtype] != 0)
1643                         break;
1644         if (qtype == MAXQUOTAS)
1645                 /* Nothing to do. */
1646                 return 0;
1647
1648         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1649             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1650                 fprintf(stderr, _("Cannot enable project quota; "
1651                                   "inode size too small.\n"));
1652                 return 1;
1653         }
1654
1655         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1656                 if (quota_enable[qtype] == QOPT_ENABLE)
1657                         qtype_bits |= 1 << qtype;
1658         }
1659
1660         retval = quota_init_context(&qctx, fs, qtype_bits);
1661         if (retval) {
1662                 com_err(program_name, retval,
1663                         _("while initializing quota context in support library"));
1664                 return 1;
1665         }
1666
1667         if (qtype_bits)
1668                 quota_compute_usage(qctx);
1669
1670         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1671                 if (quota_enable[qtype] == QOPT_ENABLE &&
1672                     *quota_sb_inump(fs->super, qtype) == 0) {
1673                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1674                                 retval = quota_update_limits(qctx, qf_ino,
1675                                                              qtype);
1676                                 if (retval) {
1677                                         com_err(program_name, retval,
1678                                                 _("while updating quota limits (%d)"),
1679                                                 qtype);
1680                                 quota_errout:
1681                                         quota_release_context(&qctx);
1682                                         return 1;
1683                                 }
1684                         }
1685                         retval = quota_write_inode(qctx, 1 << qtype);
1686                         if (retval) {
1687                                 com_err(program_name, retval,
1688                                         _("while writing quota file (%d)"),
1689                                         qtype);
1690                                 goto quota_errout;
1691                         }
1692                         /* Enable Quota feature if one of quota enabled */
1693                         if (!ext2fs_has_feature_quota(fs->super)) {
1694                                 ext2fs_set_feature_quota(fs->super);
1695                                 need_dirty = 1;
1696                         }
1697                         if (qtype == PRJQUOTA &&
1698                             !ext2fs_has_feature_project(fs->super)) {
1699                                 ext2fs_set_feature_project(fs->super);
1700                                 need_dirty = 1;
1701                         }
1702                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1703                         retval = quota_remove_inode(fs, qtype);
1704                         if (retval) {
1705                                 com_err(program_name, retval,
1706                                         _("while removing quota file (%d)"),
1707                                         qtype);
1708                                 goto quota_errout;
1709                         }
1710                         if (qtype == PRJQUOTA) {
1711                                 ext2fs_clear_feature_project(fs->super);
1712                                 need_dirty = 1;
1713                         }
1714                 }
1715         }
1716
1717         quota_release_context(&qctx);
1718         /* Clear Quota feature if all quota types disabled. */
1719         if (!qtype_bits) {
1720                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1721                         if (*quota_sb_inump(fs->super, qtype))
1722                                 break;
1723                 if (qtype == MAXQUOTAS) {
1724                         ext2fs_clear_feature_quota(fs->super);
1725                         need_dirty = 1;
1726                 }
1727
1728         }
1729         if (need_dirty)
1730                 ext2fs_mark_super_dirty(fs);
1731         return 0;
1732 }
1733
1734 static int option_handle_function(char *token)
1735 {
1736         if (strncmp(token, "usr", 3) == 0) {
1737                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1738         } else if (strncmp(token, "^usr", 4) == 0) {
1739                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1740         } else if (strncmp(token, "grp", 3) == 0) {
1741                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1742         } else if (strncmp(token, "^grp", 4) == 0) {
1743                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1744         } else if (strncmp(token, "prj", 3) == 0) {
1745                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1746         } else if (strncmp(token, "^prj", 4) == 0) {
1747                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1748         } else {
1749                 fputs(_("\nBad quota options specified.\n\n"
1750                         "Following valid quota options are available "
1751                         "(pass by separating with comma):\n"
1752                         "\t[^]usr[quota]\n"
1753                         "\t[^]grp[quota]\n"
1754                         "\t[^]prj[quota]\n"
1755                         "\n\n"), stderr);
1756                 return 1;
1757         }
1758         return 0;
1759 }
1760
1761 static void parse_e2label_options(int argc, char ** argv)
1762 {
1763         if ((argc < 2) || (argc > 3)) {
1764                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1765                 exit(1);
1766         }
1767         io_options = strchr(argv[1], '?');
1768         if (io_options)
1769                 *io_options++ = 0;
1770         device_name = blkid_get_devname(NULL, argv[1], NULL);
1771         if (!device_name) {
1772                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1773                         argv[1]);
1774                 exit(1);
1775         }
1776         open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1777         if (argc == 3) {
1778                 open_flag |= EXT2_FLAG_RW;
1779                 L_flag = 1;
1780                 new_label = argv[2];
1781         } else
1782                 print_label++;
1783 }
1784
1785 static time_t parse_time(char *str)
1786 {
1787         struct  tm      ts;
1788
1789         if (strcmp(str, "now") == 0) {
1790                 return (time(0));
1791         }
1792         memset(&ts, 0, sizeof(ts));
1793 #ifdef HAVE_STRPTIME
1794         strptime(str, "%Y%m%d%H%M%S", &ts);
1795 #else
1796         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1797                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1798         ts.tm_year -= 1900;
1799         ts.tm_mon -= 1;
1800         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1801             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1802             ts.tm_min > 59 || ts.tm_sec > 61)
1803                 ts.tm_mday = 0;
1804 #endif
1805         if (ts.tm_mday == 0) {
1806                 com_err(program_name, 0,
1807                         _("Couldn't parse date/time specifier: %s"),
1808                         str);
1809                 usage();
1810         }
1811         ts.tm_isdst = -1;
1812         return (mktime(&ts));
1813 }
1814
1815 static void parse_tune2fs_options(int argc, char **argv)
1816 {
1817         int c;
1818         char *tmp;
1819         struct group *gr;
1820         struct passwd *pw;
1821         int ret;
1822         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1823
1824         open_flag = 0;
1825         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1826         while ((c = getopt(argc, argv, optstring)) != EOF)
1827                 switch (c) {
1828                 case 'c':
1829                         open_flag = EXT2_FLAG_RW;
1830                         c_flag = 1;
1831                         if (strcmp(optarg, "random") == 0) {
1832                                 max_mount_count = 65536;
1833                                 break;
1834                         }
1835                         max_mount_count = strtol(optarg, &tmp, 0);
1836                         if (*tmp || max_mount_count > 16000 ||
1837                             max_mount_count < -16000) {
1838                                 com_err(program_name, 0,
1839                                         _("bad mounts count - %s"),
1840                                         optarg);
1841                                 usage();
1842                         }
1843                         if (max_mount_count == 0)
1844                                 max_mount_count = -1;
1845                         break;
1846                 case 'C':
1847                         mount_count = strtoul(optarg, &tmp, 0);
1848                         if (*tmp || mount_count > 16000) {
1849                                 com_err(program_name, 0,
1850                                         _("bad mounts count - %s"),
1851                                         optarg);
1852                                 usage();
1853                         }
1854                         C_flag = 1;
1855                         open_flag = EXT2_FLAG_RW;
1856                         break;
1857                 case 'e':
1858                         if (strcmp(optarg, "continue") == 0)
1859                                 errors = EXT2_ERRORS_CONTINUE;
1860                         else if (strcmp(optarg, "remount-ro") == 0)
1861                                 errors = EXT2_ERRORS_RO;
1862                         else if (strcmp(optarg, "panic") == 0)
1863                                 errors = EXT2_ERRORS_PANIC;
1864                         else {
1865                                 com_err(program_name, 0,
1866                                         _("bad error behavior - %s"),
1867                                         optarg);
1868                                 usage();
1869                         }
1870                         e_flag = 1;
1871                         open_flag = EXT2_FLAG_RW;
1872                         break;
1873                 case 'E':
1874                         extended_cmd = optarg;
1875                         open_flag |= EXT2_FLAG_RW;
1876                         break;
1877                 case 'f': /* Force */
1878                         f_flag++;
1879                         break;
1880                 case 'g':
1881                         resgid = strtoul(optarg, &tmp, 0);
1882                         if (*tmp) {
1883                                 gr = getgrnam(optarg);
1884                                 if (gr == NULL)
1885                                         tmp = optarg;
1886                                 else {
1887                                         resgid = gr->gr_gid;
1888                                         *tmp = 0;
1889                                 }
1890                         }
1891                         if (*tmp) {
1892                                 com_err(program_name, 0,
1893                                         _("bad gid/group name - %s"),
1894                                         optarg);
1895                                 usage();
1896                         }
1897                         g_flag = 1;
1898                         open_flag = EXT2_FLAG_RW;
1899                         break;
1900                 case 'i':
1901                         interval = strtoul(optarg, &tmp, 0);
1902                         switch (*tmp) {
1903                         case 's':
1904                                 tmp++;
1905                                 break;
1906                         case '\0':
1907                         case 'd':
1908                         case 'D': /* days */
1909                                 interval *= 86400;
1910                                 if (*tmp != '\0')
1911                                         tmp++;
1912                                 break;
1913                         case 'm':
1914                         case 'M': /* months! */
1915                                 interval *= 86400 * 30;
1916                                 tmp++;
1917                                 break;
1918                         case 'w':
1919                         case 'W': /* weeks */
1920                                 interval *= 86400 * 7;
1921                                 tmp++;
1922                                 break;
1923                         }
1924                         if (*tmp) {
1925                                 com_err(program_name, 0,
1926                                         _("bad interval - %s"), optarg);
1927                                 usage();
1928                         }
1929                         i_flag = 1;
1930                         open_flag = EXT2_FLAG_RW;
1931                         break;
1932                 case 'j':
1933                         if (!journal_size)
1934                                 journal_size = -1;
1935                         open_flag = EXT2_FLAG_RW;
1936                         break;
1937                 case 'J':
1938                         parse_journal_opts(optarg);
1939                         open_flag = EXT2_FLAG_RW;
1940                         break;
1941                 case 'l':
1942                         l_flag = 1;
1943                         break;
1944                 case 'L':
1945                         new_label = optarg;
1946                         L_flag = 1;
1947                         open_flag |= EXT2_FLAG_RW |
1948                                 EXT2_FLAG_JOURNAL_DEV_OK;
1949                         break;
1950                 case 'm':
1951                         reserved_ratio = strtod(optarg, &tmp);
1952                         if (*tmp || reserved_ratio > 50 ||
1953                             reserved_ratio < 0) {
1954                                 com_err(program_name, 0,
1955                                         _("bad reserved block ratio - %s"),
1956                                         optarg);
1957                                 usage();
1958                         }
1959                         m_flag = 1;
1960                         open_flag = EXT2_FLAG_RW;
1961                         break;
1962                 case 'M':
1963                         new_last_mounted = optarg;
1964                         M_flag = 1;
1965                         open_flag = EXT2_FLAG_RW;
1966                         break;
1967                 case 'o':
1968                         if (mntopts_cmd) {
1969                                 com_err(program_name, 0, "%s",
1970                                         _("-o may only be specified once"));
1971                                 usage();
1972                         }
1973                         mntopts_cmd = optarg;
1974                         open_flag = EXT2_FLAG_RW;
1975                         break;
1976                 case 'O':
1977                         if (features_cmd) {
1978                                 com_err(program_name, 0, "%s",
1979                                         _("-O may only be specified once"));
1980                                 usage();
1981                         }
1982                         features_cmd = optarg;
1983                         open_flag = EXT2_FLAG_RW;
1984                         break;
1985                 case 'Q':
1986                         Q_flag = 1;
1987                         ret = parse_quota_opts(optarg, option_handle_function);
1988                         if (ret)
1989                                 exit(1);
1990                         open_flag = EXT2_FLAG_RW;
1991                         break;
1992                 case 'r':
1993                         reserved_blocks = strtoul(optarg, &tmp, 0);
1994                         if (*tmp) {
1995                                 com_err(program_name, 0,
1996                                         _("bad reserved blocks count - %s"),
1997                                         optarg);
1998                                 usage();
1999                         }
2000                         r_flag = 1;
2001                         open_flag = EXT2_FLAG_RW;
2002                         break;
2003                 case 's': /* Deprecated */
2004                         s_flag = atoi(optarg);
2005                         open_flag = EXT2_FLAG_RW;
2006                         break;
2007                 case 'T':
2008                         T_flag = 1;
2009                         last_check_time = parse_time(optarg);
2010                         open_flag = EXT2_FLAG_RW;
2011                         break;
2012                 case 'u':
2013                                 resuid = strtoul(optarg, &tmp, 0);
2014                                 if (*tmp) {
2015                                         pw = getpwnam(optarg);
2016                                         if (pw == NULL)
2017                                                 tmp = optarg;
2018                                         else {
2019                                                 resuid = pw->pw_uid;
2020                                                 *tmp = 0;
2021                                         }
2022                                 }
2023                                 if (*tmp) {
2024                                         com_err(program_name, 0,
2025                                                 _("bad uid/user name - %s"),
2026                                                 optarg);
2027                                         usage();
2028                                 }
2029                                 u_flag = 1;
2030                                 open_flag = EXT2_FLAG_RW;
2031                                 break;
2032                 case 'U':
2033                         new_UUID = optarg;
2034                         U_flag = 1;
2035                         open_flag = EXT2_FLAG_RW |
2036                                 EXT2_FLAG_JOURNAL_DEV_OK;
2037                         break;
2038                 case 'I':
2039                         new_inode_size = strtoul(optarg, &tmp, 0);
2040                         if (*tmp) {
2041                                 com_err(program_name, 0,
2042                                         _("bad inode size - %s"),
2043                                         optarg);
2044                                 usage();
2045                         }
2046                         if (!((new_inode_size &
2047                                (new_inode_size - 1)) == 0)) {
2048                                 com_err(program_name, 0,
2049                                         _("Inode size must be a "
2050                                           "power of two- %s"),
2051                                         optarg);
2052                                 usage();
2053                         }
2054                         open_flag = EXT2_FLAG_RW;
2055                         I_flag = 1;
2056                         break;
2057                 case 'z':
2058                         undo_file = optarg;
2059                         break;
2060                 default:
2061                         usage();
2062                 }
2063         if (optind < argc - 1 || optind == argc)
2064                 usage();
2065         if (!open_flag && !l_flag)
2066                 usage();
2067         io_options = strchr(argv[optind], '?');
2068         if (io_options)
2069                 *io_options++ = 0;
2070         device_name = blkid_get_devname(NULL, argv[optind], NULL);
2071         if (!device_name) {
2072                 com_err(program_name, 0, _("Unable to resolve '%s'"),
2073                         argv[optind]);
2074                 exit(1);
2075         }
2076 }
2077
2078 #ifdef CONFIG_BUILD_FINDFS
2079 void do_findfs(int argc, char **argv)
2080 {
2081         char    *dev;
2082
2083         if ((argc != 2) ||
2084             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2085                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2086                 exit(2);
2087         }
2088         dev = blkid_get_devname(NULL, argv[1], NULL);
2089         if (!dev) {
2090                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2091                         argv[1]);
2092                 exit(1);
2093         }
2094         puts(dev);
2095         exit(0);
2096 }
2097 #endif
2098
2099 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2100 {
2101         struct ext2_super_block *sb = fs->super;
2102         char    *buf, *token, *next, *p, *arg;
2103         int     len, hash_alg;
2104         int     r_usage = 0;
2105         int encoding = 0;
2106         char    *encoding_flags = NULL;
2107
2108         len = strlen(opts);
2109         buf = malloc(len+1);
2110         if (!buf) {
2111                 fprintf(stderr, "%s",
2112                         _("Couldn't allocate memory to parse options!\n"));
2113                 return 1;
2114         }
2115         strcpy(buf, opts);
2116         for (token = buf; token && *token; token = next) {
2117                 p = strchr(token, ',');
2118                 next = 0;
2119                 if (p) {
2120                         *p = 0;
2121                         next = p+1;
2122                 }
2123                 arg = strchr(token, '=');
2124                 if (arg) {
2125                         *arg = 0;
2126                         arg++;
2127                 }
2128                 if (strcmp(token, "clear-mmp") == 0 ||
2129                     strcmp(token, "clear_mmp") == 0) {
2130                         clear_mmp = 1;
2131                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2132                         unsigned long intv;
2133                         if (!arg) {
2134                                 r_usage++;
2135                                 continue;
2136                         }
2137                         intv = strtoul(arg, &p, 0);
2138                         if (*p) {
2139                                 fprintf(stderr,
2140                                         _("Invalid mmp_update_interval: %s\n"),
2141                                         arg);
2142                                 r_usage++;
2143                                 continue;
2144                         }
2145                         if (intv == 0) {
2146                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2147                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2148                                 fprintf(stderr,
2149                                         _("mmp_update_interval too big: %lu\n"),
2150                                         intv);
2151                                 r_usage++;
2152                                 continue;
2153                         }
2154                         printf(P_("Setting multiple mount protection update "
2155                                   "interval to %lu second\n",
2156                                   "Setting multiple mount protection update "
2157                                   "interval to %lu seconds\n", intv),
2158                                intv);
2159                         sb->s_mmp_update_interval = intv;
2160                         ext2fs_mark_super_dirty(fs);
2161                 } else if (!strcmp(token, "force_fsck")) {
2162                         sb->s_state |= EXT2_ERROR_FS;
2163                         printf(_("Setting filesystem error flag to force fsck.\n"));
2164                         ext2fs_mark_super_dirty(fs);
2165                 } else if (!strcmp(token, "test_fs")) {
2166                         sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2167                         printf("Setting test filesystem flag\n");
2168                         ext2fs_mark_super_dirty(fs);
2169                 } else if (!strcmp(token, "^test_fs")) {
2170                         sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2171                         printf("Clearing test filesystem flag\n");
2172                         ext2fs_mark_super_dirty(fs);
2173                 } else if (strcmp(token, "stride") == 0) {
2174                         if (!arg) {
2175                                 r_usage++;
2176                                 continue;
2177                         }
2178                         stride = strtoul(arg, &p, 0);
2179                         if (*p) {
2180                                 fprintf(stderr,
2181                                         _("Invalid RAID stride: %s\n"),
2182                                         arg);
2183                                 r_usage++;
2184                                 continue;
2185                         }
2186                         stride_set = 1;
2187                 } else if (strcmp(token, "stripe-width") == 0 ||
2188                            strcmp(token, "stripe_width") == 0) {
2189                         if (!arg) {
2190                                 r_usage++;
2191                                 continue;
2192                         }
2193                         stripe_width = strtoul(arg, &p, 0);
2194                         if (*p) {
2195                                 fprintf(stderr,
2196                                         _("Invalid RAID stripe-width: %s\n"),
2197                                         arg);
2198                                 r_usage++;
2199                                 continue;
2200                         }
2201                         stripe_width_set = 1;
2202                 } else if (strcmp(token, "hash_alg") == 0 ||
2203                            strcmp(token, "hash-alg") == 0) {
2204                         if (!arg) {
2205                                 r_usage++;
2206                                 continue;
2207                         }
2208                         hash_alg = e2p_string2hash(arg);
2209                         if (hash_alg < 0) {
2210                                 fprintf(stderr,
2211                                         _("Invalid hash algorithm: %s\n"),
2212                                         arg);
2213                                 r_usage++;
2214                                 continue;
2215                         }
2216                         sb->s_def_hash_version = hash_alg;
2217                         printf(_("Setting default hash algorithm "
2218                                  "to %s (%d)\n"),
2219                                arg, hash_alg);
2220                         ext2fs_mark_super_dirty(fs);
2221                 } else if (!strcmp(token, "mount_opts")) {
2222                         if (!arg) {
2223                                 r_usage++;
2224                                 continue;
2225                         }
2226                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2227                                 fprintf(stderr,
2228                                         "Extended mount options too long\n");
2229                                 continue;
2230                         }
2231                         ext_mount_opts = strdup(arg);
2232                 } else if (!strcmp(token, "encoding")) {
2233                         if (!arg) {
2234                                 r_usage++;
2235                                 continue;
2236                         }
2237                         if (mount_flags & EXT2_MF_MOUNTED) {
2238                                 fputs(_("The casefold feature may only be enabled when "
2239                                         "the filesystem is unmounted.\n"), stderr);
2240                                 r_usage++;
2241                                 continue;
2242                         }
2243                         if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2244                                 fprintf(stderr, _("Cannot alter existing encoding\n"));
2245                                 r_usage++;
2246                                 continue;
2247                         }
2248                         encoding = e2p_str2encoding(arg);
2249                         if (encoding < 0) {
2250                                 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2251                                 r_usage++;
2252                                 continue;
2253                         }
2254                         enabling_casefold = 1;
2255                         sb->s_encoding = encoding;
2256                         printf(_("Setting encoding to '%s'\n"), arg);
2257                         sb->s_encoding_flags =
2258                                 e2p_get_encoding_flags(sb->s_encoding);
2259                 } else if (!strcmp(token, "encoding_flags")) {
2260                         if (!arg) {
2261                                 r_usage++;
2262                                 continue;
2263                         }
2264                         encoding_flags = arg;
2265                 } else
2266                         r_usage++;
2267         }
2268
2269         if (encoding > 0 && !r_usage) {
2270                 sb->s_encoding_flags =
2271                         e2p_get_encoding_flags(sb->s_encoding);
2272
2273                 if (encoding_flags &&
2274                     e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2275                                            &sb->s_encoding_flags)) {
2276                         fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2277                                         encoding_flags);
2278                         r_usage++;
2279                 } else if (encoding_flags)
2280                         printf(_("Setting encoding_flags to '%s'\n"),
2281                                  encoding_flags);
2282                 ext2fs_set_feature_casefold(sb);
2283                 ext2fs_mark_super_dirty(fs);
2284         } else if (encoding_flags && !r_usage) {
2285                 fprintf(stderr, _("error: An encoding must be explicitly "
2286                                   "specified when passing encoding-flags\n"));
2287                 r_usage++;
2288         }
2289         if (r_usage) {
2290                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2291                         "Extended options are separated by commas, "
2292                         "and may take an argument which\n"
2293                         "\tis set off by an equals ('=') sign.\n\n"
2294                         "Valid extended options are:\n"
2295                         "\tclear_mmp\n"
2296                         "\thash_alg=<hash algorithm>\n"
2297                         "\tmount_opts=<extended default mount options>\n"
2298                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2299                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2300                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2301                         "\tforce_fsck\n"
2302                         "\ttest_fs\n"
2303                         "\t^test_fs\n"
2304                         "\tencoding=<encoding>\n"
2305                         "\tencoding_flags=<flags>\n"));
2306                 free(buf);
2307                 return 1;
2308         }
2309         free(buf);
2310
2311         return 0;
2312 }
2313
2314 /*
2315  * Fill in the block bitmap bmap with the information regarding the
2316  * blocks to be moved
2317  */
2318 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2319                             ext2fs_block_bitmap bmap)
2320 {
2321         dgrp_t i;
2322         int retval;
2323         ext2_badblocks_list bb_list = 0;
2324         blk64_t j, needed_blocks = 0;
2325         blk64_t start_blk, end_blk;
2326
2327         retval = ext2fs_read_bb_inode(fs, &bb_list);
2328         if (retval)
2329                 return retval;
2330
2331         for (i = 0; i < fs->group_desc_count; i++) {
2332                 start_blk = ext2fs_inode_table_loc(fs, i) +
2333                                         fs->inode_blocks_per_group;
2334
2335                 end_blk = ext2fs_inode_table_loc(fs, i) +
2336                                         new_ino_blks_per_grp;
2337
2338                 for (j = start_blk; j < end_blk; j++) {
2339                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2340                                 /*
2341                                  * IF the block is a bad block we fail
2342                                  */
2343                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2344                                         ext2fs_badblocks_list_free(bb_list);
2345                                         return ENOSPC;
2346                                 }
2347
2348                                 ext2fs_mark_block_bitmap2(bmap, j);
2349                         } else {
2350                                 /*
2351                                  * We are going to use this block for
2352                                  * inode table. So mark them used.
2353                                  */
2354                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2355                         }
2356                 }
2357                 needed_blocks += end_blk - start_blk;
2358         }
2359
2360         ext2fs_badblocks_list_free(bb_list);
2361         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2362                 return ENOSPC;
2363
2364         return 0;
2365 }
2366
2367 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2368 {
2369         dgrp_t group;
2370         group = ext2fs_group_of_blk2(fs, blk);
2371         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2372                 return 1;
2373         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2374                 return 1;
2375         return 0;
2376 }
2377
2378 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2379 {
2380         blk64_t start_blk, end_blk;
2381         start_blk = fs->super->s_first_data_block +
2382                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2383         /*
2384          * We cannot get new block beyond end_blk for for the last block group
2385          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2386          */
2387         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2388         if (blk >= start_blk && blk <= end_blk)
2389                 return 1;
2390         return 0;
2391 }
2392
2393 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2394 {
2395
2396         char *buf;
2397         dgrp_t group = 0;
2398         errcode_t retval;
2399         int meta_data = 0;
2400         blk64_t blk, new_blk, goal;
2401         struct blk_move *bmv;
2402
2403         retval = ext2fs_get_mem(fs->blocksize, &buf);
2404         if (retval)
2405                 return retval;
2406
2407         for (new_blk = blk = fs->super->s_first_data_block;
2408              blk < ext2fs_blocks_count(fs->super); blk++) {
2409                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2410                         continue;
2411
2412                 if (ext2fs_is_meta_block(fs, blk)) {
2413                         /*
2414                          * If the block is mapping a fs meta data block
2415                          * like group desc/block bitmap/inode bitmap. We
2416                          * should find a block in the same group and fix
2417                          * the respective fs metadata pointers. Otherwise
2418                          * fail
2419                          */
2420                         group = ext2fs_group_of_blk2(fs, blk);
2421                         goal = ext2fs_group_first_block2(fs, group);
2422                         meta_data = 1;
2423
2424                 } else {
2425                         goal = new_blk;
2426                 }
2427                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2428                 if (retval)
2429                         goto err_out;
2430
2431                 /* new fs meta data block should be in the same group */
2432                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2433                         retval = ENOSPC;
2434                         goto err_out;
2435                 }
2436
2437                 /* Mark this block as allocated */
2438                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2439
2440                 /* Add it to block move list */
2441                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2442                 if (retval)
2443                         goto err_out;
2444
2445                 bmv->old_loc = blk;
2446                 bmv->new_loc = new_blk;
2447
2448                 list_add(&(bmv->list), &blk_move_list);
2449
2450                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2451                 if (retval)
2452                         goto err_out;
2453
2454                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2455                 if (retval)
2456                         goto err_out;
2457         }
2458
2459 err_out:
2460         ext2fs_free_mem(&buf);
2461         return retval;
2462 }
2463
2464 static blk64_t translate_block(blk64_t blk)
2465 {
2466         struct list_head *entry;
2467         struct blk_move *bmv;
2468
2469         list_for_each(entry, &blk_move_list) {
2470                 bmv = list_entry(entry, struct blk_move, list);
2471                 if (bmv->old_loc == blk)
2472                         return bmv->new_loc;
2473         }
2474
2475         return 0;
2476 }
2477
2478 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2479                          blk64_t *block_nr,
2480                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2481                          blk64_t ref_block EXT2FS_ATTR((unused)),
2482                          int ref_offset EXT2FS_ATTR((unused)),
2483                          void *priv_data)
2484 {
2485         int ret = 0;
2486         blk64_t new_blk;
2487         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2488
2489         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2490                 return 0;
2491         new_blk = translate_block(*block_nr);
2492         if (new_blk) {
2493                 *block_nr = new_blk;
2494                 /*
2495                  * This will force the ext2fs_write_inode in the iterator
2496                  */
2497                 ret |= BLOCK_CHANGED;
2498         }
2499
2500         return ret;
2501 }
2502
2503 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2504 {
2505         errcode_t retval = 0;
2506         ext2_ino_t ino;
2507         blk64_t blk;
2508         char *block_buf = 0;
2509         struct ext2_inode inode;
2510         ext2_inode_scan scan = NULL;
2511
2512         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2513         if (retval)
2514                 return retval;
2515
2516         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2517         if (retval)
2518                 goto err_out;
2519
2520         while (1) {
2521                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2522                 if (retval)
2523                         goto err_out;
2524
2525                 if (!ino)
2526                         break;
2527
2528                 if (inode.i_links_count == 0)
2529                         continue; /* inode not in use */
2530
2531                 /* FIXME!!
2532                  * If we end up modifying the journal inode
2533                  * the sb->s_jnl_blocks will differ. But a
2534                  * subsequent e2fsck fixes that.
2535                  * Do we need to fix this ??
2536                  */
2537
2538                 if (ext2fs_file_acl_block(fs, &inode) &&
2539                     ext2fs_test_block_bitmap2(bmap,
2540                                         ext2fs_file_acl_block(fs, &inode))) {
2541                         blk = translate_block(ext2fs_file_acl_block(fs,
2542                                                                     &inode));
2543                         if (!blk)
2544                                 continue;
2545
2546                         ext2fs_file_acl_block_set(fs, &inode, blk);
2547
2548                         /*
2549                          * Write the inode to disk so that inode table
2550                          * resizing can work
2551                          */
2552                         retval = ext2fs_write_inode(fs, ino, &inode);
2553                         if (retval)
2554                                 goto err_out;
2555                 }
2556
2557                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2558                         continue;
2559
2560                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2561                                                process_block, bmap);
2562                 if (retval)
2563                         goto err_out;
2564
2565         }
2566
2567 err_out:
2568         ext2fs_free_mem(&block_buf);
2569         ext2fs_close_inode_scan(scan);
2570
2571         return retval;
2572 }
2573
2574 /*
2575  * We need to scan for inode and block bitmaps that may need to be
2576  * moved.  This can take place if the filesystem was formatted for
2577  * RAID arrays using the mke2fs's extended option "stride".
2578  */
2579 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2580 {
2581         dgrp_t i;
2582         blk64_t blk, new_blk;
2583
2584         for (i = 0; i < fs->group_desc_count; i++) {
2585                 blk = ext2fs_block_bitmap_loc(fs, i);
2586                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2587                         new_blk = translate_block(blk);
2588                         if (!new_blk)
2589                                 continue;
2590                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2591                 }
2592
2593                 blk = ext2fs_inode_bitmap_loc(fs, i);
2594                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2595                         new_blk = translate_block(blk);
2596                         if (!new_blk)
2597                                 continue;
2598                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2599                 }
2600         }
2601         return 0;
2602 }
2603
2604 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2605 {
2606         dgrp_t i;
2607         blk64_t blk;
2608         errcode_t retval;
2609         int new_ino_blks_per_grp;
2610         unsigned int j;
2611         char *old_itable = NULL, *new_itable = NULL;
2612         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2613         unsigned long old_ino_size;
2614         int old_itable_size, new_itable_size;
2615
2616         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2617         old_ino_size = EXT2_INODE_SIZE(fs->super);
2618
2619         new_ino_blks_per_grp = ext2fs_div_ceil(
2620                                         EXT2_INODES_PER_GROUP(fs->super) *
2621                                         new_ino_size,
2622                                         fs->blocksize);
2623
2624         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2625
2626         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2627         if (retval)
2628                 return retval;
2629
2630         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2631         if (retval)
2632                 goto err_out;
2633
2634         tmp_old_itable = old_itable;
2635         tmp_new_itable = new_itable;
2636
2637         for (i = 0; i < fs->group_desc_count; i++) {
2638                 blk = ext2fs_inode_table_loc(fs, i);
2639                 retval = io_channel_read_blk64(fs->io, blk,
2640                                 fs->inode_blocks_per_group, old_itable);
2641                 if (retval)
2642                         goto err_out;
2643
2644                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2645                         memcpy(new_itable, old_itable, old_ino_size);
2646
2647                         memset(new_itable+old_ino_size, 0,
2648                                         new_ino_size - old_ino_size);
2649
2650                         new_itable += new_ino_size;
2651                         old_itable += old_ino_size;
2652                 }
2653
2654                 /* reset the pointer */
2655                 old_itable = tmp_old_itable;
2656                 new_itable = tmp_new_itable;
2657
2658                 retval = io_channel_write_blk64(fs->io, blk,
2659                                         new_ino_blks_per_grp, new_itable);
2660                 if (retval)
2661                         goto err_out;
2662         }
2663
2664         /* Update the meta data */
2665         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2666         ext2fs_free_inode_cache(fs->icache);
2667         fs->icache = 0;
2668         fs->super->s_inode_size = new_ino_size;
2669
2670 err_out:
2671         if (old_itable)
2672                 ext2fs_free_mem(&old_itable);
2673
2674         if (new_itable)
2675                 ext2fs_free_mem(&new_itable);
2676
2677         return retval;
2678 }
2679
2680
2681 #define list_for_each_safe(pos, pnext, head) \
2682         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2683              pos = pnext, pnext = pos->next)
2684
2685 static void free_blk_move_list(void)
2686 {
2687         struct list_head *entry, *tmp;
2688         struct blk_move *bmv;
2689
2690         list_for_each_safe(entry, tmp, &blk_move_list) {
2691                 bmv = list_entry(entry, struct blk_move, list);
2692                 list_del(entry);
2693                 ext2fs_free_mem(&bmv);
2694         }
2695         return;
2696 }
2697
2698 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2699 {
2700         errcode_t retval;
2701         int new_ino_blks_per_grp;
2702         ext2fs_block_bitmap bmap;
2703
2704         retval = ext2fs_read_inode_bitmap(fs);
2705         if (retval) {
2706                 fputs(_("Failed to read inode bitmap\n"), stderr);
2707                 return retval;
2708         }
2709         retval = ext2fs_read_block_bitmap(fs);
2710         if (retval) {
2711                 fputs(_("Failed to read block bitmap\n"), stderr);
2712                 return retval;
2713         }
2714         INIT_LIST_HEAD(&blk_move_list);
2715
2716
2717         new_ino_blks_per_grp = ext2fs_div_ceil(
2718                                         EXT2_INODES_PER_GROUP(fs->super)*
2719                                         new_size,
2720                                         fs->blocksize);
2721
2722         /* We may change the file system.
2723          * Mark the file system as invalid so that
2724          * the user is prompted to run fsck.
2725          */
2726         fs->super->s_state &= ~EXT2_VALID_FS;
2727
2728         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2729                                                 &bmap);
2730         if (retval) {
2731                 fputs(_("Failed to allocate block bitmap when "
2732                                 "increasing inode size\n"), stderr);
2733                 return retval;
2734         }
2735         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2736         if (retval) {
2737                 fputs(_("Not enough space to increase inode size \n"), stderr);
2738                 goto err_out;
2739         }
2740         retval = move_block(fs, bmap);
2741         if (retval) {
2742                 fputs(_("Failed to relocate blocks during inode resize \n"),
2743                       stderr);
2744                 goto err_out;
2745         }
2746         retval = inode_scan_and_fix(fs, bmap);
2747         if (retval)
2748                 goto err_out_undo;
2749
2750         retval = group_desc_scan_and_fix(fs, bmap);
2751         if (retval)
2752                 goto err_out_undo;
2753
2754         retval = expand_inode_table(fs, new_size);
2755         if (retval)
2756                 goto err_out_undo;
2757
2758         ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2759
2760         fs->super->s_state |= EXT2_VALID_FS;
2761         /* mark super block and block bitmap as dirty */
2762         ext2fs_mark_super_dirty(fs);
2763         ext2fs_mark_bb_dirty(fs);
2764
2765 err_out:
2766         free_blk_move_list();
2767         ext2fs_free_block_bitmap(bmap);
2768
2769         return retval;
2770
2771 err_out_undo:
2772         free_blk_move_list();
2773         ext2fs_free_block_bitmap(bmap);
2774         fputs(_("Error in resizing the inode size.\n"
2775                         "Run e2undo to undo the "
2776                         "file system changes. \n"), stderr);
2777
2778         return retval;
2779 }
2780
2781 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2782 {
2783         errcode_t retval = 0;
2784         const char *tdb_dir;
2785         char *tdb_file = NULL;
2786         char *dev_name, *tmp_name;
2787
2788         /* (re)open a specific undo file */
2789         if (undo_file && undo_file[0] != 0) {
2790                 retval = set_undo_io_backing_manager(*io_ptr);
2791                 if (retval)
2792                         goto err;
2793                 *io_ptr = undo_io_manager;
2794                 retval = set_undo_io_backup_file(undo_file);
2795                 if (retval)
2796                         goto err;
2797                 printf(_("Overwriting existing filesystem; this can be undone "
2798                          "using the command:\n"
2799                          "    e2undo %s %s\n\n"),
2800                          undo_file, name);
2801                 return retval;
2802         }
2803
2804         /*
2805          * Configuration via a conf file would be
2806          * nice
2807          */
2808         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2809         if (!tdb_dir)
2810                 tdb_dir = "/var/lib/e2fsprogs";
2811
2812         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2813             access(tdb_dir, W_OK))
2814                 return 0;
2815
2816         tmp_name = strdup(name);
2817         if (!tmp_name)
2818                 goto errout;
2819         dev_name = basename(tmp_name);
2820         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2821         if (!tdb_file) {
2822                 free(tmp_name);
2823                 goto errout;
2824         }
2825         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2826         free(tmp_name);
2827
2828         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2829                 retval = errno;
2830                 com_err(program_name, retval,
2831                         _("while trying to delete %s"), tdb_file);
2832                 goto errout;
2833         }
2834
2835         retval = set_undo_io_backing_manager(*io_ptr);
2836         if (retval)
2837                 goto errout;
2838         *io_ptr = undo_io_manager;
2839         retval = set_undo_io_backup_file(tdb_file);
2840         if (retval)
2841                 goto errout;
2842         printf(_("Overwriting existing filesystem; this can be undone "
2843                  "using the command:\n"
2844                  "    e2undo %s %s\n\n"),
2845                  tdb_file, name);
2846
2847         free(tdb_file);
2848         return 0;
2849 errout:
2850         free(tdb_file);
2851 err:
2852         com_err("tune2fs", retval, "while trying to setup undo file\n");
2853         return retval;
2854 }
2855
2856 static int
2857 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2858 {
2859         int retval, nr_users, start;
2860         journal_superblock_t *jsb;
2861         ext2_filsys jfs;
2862         __u8 *j_uuid;
2863         char *journal_path;
2864         char uuid[UUID_STR_SIZE];
2865         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2866
2867         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2868                 return 0;
2869
2870         uuid_unparse(sb->s_journal_uuid, uuid);
2871         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2872         if (!journal_path)
2873                 return 0;
2874
2875         retval = ext2fs_open2(journal_path, io_options,
2876                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2877                               0, 0, unix_io_manager, &jfs);
2878         if (retval) {
2879                 com_err(program_name, retval,
2880                         _("while trying to open %s"),
2881                         journal_path);
2882                 return retval;
2883         }
2884
2885         retval = get_journal_sb(jfs, buf);
2886         if (retval != 0) {
2887                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2888                         fprintf(stderr, _("%s is not a journal device.\n"),
2889                                 journal_path);
2890                 return retval;
2891         }
2892
2893         jsb = (journal_superblock_t *) buf;
2894         /* Find the filesystem UUID */
2895         nr_users = ntohl(jsb->s_nr_users);
2896         if (nr_users > JBD2_USERS_MAX) {
2897                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2898                                  "is too high (%d).\n"), nr_users);
2899                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2900         }
2901
2902         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2903         if (j_uuid == NULL) {
2904                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2905                       stderr);
2906                 return EXT2_ET_LOAD_EXT_JOURNAL;
2907         }
2908
2909         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2910
2911         start = ext2fs_journal_sb_start(jfs->blocksize);
2912         /* Write back the journal superblock */
2913         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2914         if (retval != 0) {
2915                 com_err(program_name, retval,
2916                         "while writing journal superblock.");
2917                 return retval;
2918         }
2919
2920         ext2fs_close(jfs);
2921
2922         return 0;
2923 }
2924
2925 #ifndef BUILD_AS_LIB
2926 int main(int argc, char **argv)
2927 #else
2928 int tune2fs_main(int argc, char **argv)
2929 #endif  /* BUILD_AS_LIB */
2930 {
2931         errcode_t retval;
2932         ext2_filsys fs;
2933         struct ext2_super_block *sb;
2934         io_manager io_ptr, io_ptr_orig = NULL;
2935         int rc = 0;
2936         char default_undo_file[1] = { 0 };
2937
2938 #ifdef ENABLE_NLS
2939         setlocale(LC_MESSAGES, "");
2940         setlocale(LC_CTYPE, "");
2941         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2942         textdomain(NLS_CAT_NAME);
2943         set_com_err_gettext(gettext);
2944 #endif
2945         if (argc && *argv)
2946                 program_name = *argv;
2947         add_error_table(&et_ext2_error_table);
2948
2949 #ifdef CONFIG_BUILD_FINDFS
2950         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2951                 do_findfs(argc, argv);
2952 #endif
2953         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2954                 parse_e2label_options(argc, argv);
2955         else
2956                 parse_tune2fs_options(argc, argv);
2957
2958 #ifdef CONFIG_TESTIO_DEBUG
2959         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2960                 io_ptr = test_io_manager;
2961                 test_io_backing_manager = unix_io_manager;
2962         } else
2963 #endif
2964                 io_ptr = unix_io_manager;
2965
2966 retry_open:
2967         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2968                 open_flag |= EXT2_FLAG_SKIP_MMP;
2969
2970         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
2971                 EXT2_FLAG_JOURNAL_DEV_OK;
2972
2973         /* keep the filesystem struct around to dump MMP data */
2974         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2975
2976         retval = ext2fs_open2(device_name, io_options, open_flag,
2977                               0, 0, io_ptr, &fs);
2978         if (retval) {
2979                 com_err(program_name, retval,
2980                         _("while trying to open %s"),
2981                         device_name);
2982                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2983                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2984                         dump_mmp_msg(fs->mmp_buf,
2985                                      _("If you are sure the filesystem "
2986                                        "is not in use on any node, run:\n"
2987                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2988                 else if (retval == EXT2_ET_MMP_FAILED)
2989                         dump_mmp_msg(fs->mmp_buf, NULL);
2990                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2991                         fprintf(stderr,
2992                                 _("MMP block magic is bad. Try to fix it by "
2993                                   "running:\n'e2fsck -f %s'\n"), device_name);
2994                 else if (retval == EXT2_ET_BAD_MAGIC)
2995                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2996                 else if (retval != EXT2_ET_MMP_FAILED)
2997                         fprintf(stderr, "%s",
2998                              _("Couldn't find valid filesystem superblock.\n"));
2999
3000                 ext2fs_free(fs);
3001                 exit(1);
3002         }
3003         if (ext2fs_has_feature_journal_dev(fs->super)) {
3004                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
3005                 ext2fs_free(fs);
3006                 exit(1);
3007         }
3008         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
3009
3010         if (I_flag) {
3011                 /*
3012                  * Check the inode size is right so we can issue an
3013                  * error message and bail before setting up the tdb
3014                  * file.
3015                  */
3016                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3017                         fprintf(stderr, _("The inode size is already %lu\n"),
3018                                 new_inode_size);
3019                         rc = 1;
3020                         goto closefs;
3021                 }
3022                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3023                         fprintf(stderr, "%s",
3024                                 _("Shrinking inode size is not supported\n"));
3025                         rc = 1;
3026                         goto closefs;
3027                 }
3028                 if (new_inode_size > fs->blocksize) {
3029                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3030                                 new_inode_size, fs->blocksize);
3031                         rc = 1;
3032                         goto closefs;
3033                 }
3034                 rc = check_fsck_needed(fs,
3035                         _("Resizing inodes could take some time."));
3036                 if (rc)
3037                         goto closefs;
3038                 /*
3039                  * If inode resize is requested use the
3040                  * Undo I/O manager
3041                  */
3042                 undo_file = default_undo_file;
3043         }
3044
3045         /* Set up an undo file */
3046         if (undo_file && io_ptr_orig == NULL) {
3047                 io_ptr_orig = io_ptr;
3048                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3049                 if (retval) {
3050                         rc = 1;
3051                         goto closefs;
3052                 }
3053                 if (io_ptr != io_ptr_orig) {
3054                         ext2fs_close_free(&fs);
3055                         goto retry_open;
3056                 }
3057         }
3058
3059         sb = fs->super;
3060         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3061
3062         if (print_label) {
3063                 /* For e2label emulation */
3064                 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3065                 remove_error_table(&et_ext2_error_table);
3066                 goto closefs;
3067         }
3068
3069         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3070         if (retval) {
3071                 com_err("ext2fs_check_if_mount", retval,
3072                         _("while determining whether %s is mounted."),
3073                         device_name);
3074                 rc = 1;
3075                 goto closefs;
3076         }
3077
3078 #ifdef NO_RECOVERY
3079         /* Warn if file system needs recovery and it is opened for writing. */
3080         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3081             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3082             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3083                 fprintf(stderr,
3084 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3085   "\te2fsck -E journal_only %s\n\n"
3086   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3087   "by journal recovery.\n"), device_name);
3088         }
3089 #else
3090         /* Recover the journal if possible. */
3091         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3092             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3093                 printf(_("Recovering journal.\n"));
3094                 retval = ext2fs_run_ext3_journal(&fs);
3095                 if (retval) {
3096                         com_err("tune2fs", retval,
3097                                 "while recovering journal.\n");
3098                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3099                         if (fs)
3100                                 ext2fs_close_free(&fs);
3101                         rc = 1;
3102                         goto closefs;
3103                 }
3104                 sb = fs->super;
3105         }
3106 #endif
3107
3108         /* Normally we only need to write out the superblock */
3109         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3110
3111         if (c_flag) {
3112                 if (max_mount_count == 65536)
3113                         max_mount_count = EXT2_DFL_MAX_MNT_COUNT +
3114                                 (random() % EXT2_DFL_MAX_MNT_COUNT);
3115                 sb->s_max_mnt_count = max_mount_count;
3116                 ext2fs_mark_super_dirty(fs);
3117                 printf(_("Setting maximal mount count to %d\n"),
3118                        max_mount_count);
3119         }
3120         if (C_flag) {
3121                 sb->s_mnt_count = mount_count;
3122                 ext2fs_mark_super_dirty(fs);
3123                 printf(_("Setting current mount count to %d\n"), mount_count);
3124         }
3125         if (e_flag) {
3126                 sb->s_errors = errors;
3127                 ext2fs_mark_super_dirty(fs);
3128                 printf(_("Setting error behavior to %d\n"), errors);
3129         }
3130         if (g_flag) {
3131                 sb->s_def_resgid = resgid;
3132                 ext2fs_mark_super_dirty(fs);
3133                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3134         }
3135         if (i_flag) {
3136                 if ((unsigned long long)interval >= (1ULL << 32)) {
3137                         com_err(program_name, 0,
3138                                 _("interval between checks is too big (%lu)"),
3139                                 interval);
3140                         rc = 1;
3141                         goto closefs;
3142                 }
3143                 sb->s_checkinterval = interval;
3144                 ext2fs_mark_super_dirty(fs);
3145                 printf(_("Setting interval between checks to %lu seconds\n"),
3146                        interval);
3147         }
3148         if (m_flag) {
3149                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3150                                           ext2fs_blocks_count(sb) / 100.0);
3151                 ext2fs_mark_super_dirty(fs);
3152                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3153                         reserved_ratio,
3154                         (unsigned long long) ext2fs_r_blocks_count(sb));
3155         }
3156         if (r_flag) {
3157                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3158                         com_err(program_name, 0,
3159                                 _("reserved blocks count is too big (%llu)"),
3160                                 (unsigned long long) reserved_blocks);
3161                         rc = 1;
3162                         goto closefs;
3163                 }
3164                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3165                 ext2fs_mark_super_dirty(fs);
3166                 printf(_("Setting reserved blocks count to %llu\n"),
3167                        (unsigned long long) reserved_blocks);
3168         }
3169         if (s_flag == 1) {
3170                 if (ext2fs_has_feature_sparse_super(sb)) {
3171                         fputs(_("\nThe filesystem already has sparse "
3172                                 "superblocks.\n"), stderr);
3173                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3174                         fputs(_("\nSetting the sparse superblock flag not "
3175                                 "supported\nfor filesystems with "
3176                                 "the meta_bg feature enabled.\n"),
3177                                 stderr);
3178                         rc = 1;
3179                         goto closefs;
3180                 } else {
3181                         ext2fs_set_feature_sparse_super(sb);
3182                         sb->s_state &= ~EXT2_VALID_FS;
3183                         ext2fs_mark_super_dirty(fs);
3184                         printf(_("\nSparse superblock flag set.  %s"),
3185                                _(please_fsck));
3186                 }
3187         }
3188         if (s_flag == 0) {
3189                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3190                       stderr);
3191                 rc = 1;
3192                 goto closefs;
3193         }
3194         if (T_flag) {
3195                 sb->s_lastcheck = last_check_time;
3196                 ext2fs_mark_super_dirty(fs);
3197                 printf(_("Setting time filesystem last checked to %s\n"),
3198                        ctime(&last_check_time));
3199         }
3200         if (u_flag) {
3201                 sb->s_def_resuid = resuid;
3202                 ext2fs_mark_super_dirty(fs);
3203                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3204         }
3205         if (L_flag) {
3206                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3207                         fputs(_("Warning: label too long, truncating.\n"),
3208                               stderr);
3209                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3210                 strncpy((char *)sb->s_volume_name, new_label,
3211                         sizeof(sb->s_volume_name));
3212                 ext2fs_mark_super_dirty(fs);
3213         }
3214         if (M_flag) {
3215                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3216                 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3217                         sizeof(sb->s_last_mounted));
3218                 ext2fs_mark_super_dirty(fs);
3219         }
3220         if (mntopts_cmd) {
3221                 rc = update_mntopts(fs, mntopts_cmd);
3222                 if (rc)
3223                         goto closefs;
3224         }
3225         if (features_cmd) {
3226                 rc = update_feature_set(fs, features_cmd);
3227                 if (rc)
3228                         goto closefs;
3229         }
3230         if (extended_cmd) {
3231                 rc = parse_extended_opts(fs, extended_cmd);
3232                 if (rc)
3233                         goto closefs;
3234                 if (clear_mmp && !f_flag) {
3235                         fputs(_("Error in using clear_mmp. "
3236                                 "It must be used with -f\n"),
3237                               stderr);
3238                         goto closefs;
3239                 }
3240         }
3241         if (clear_mmp) {
3242                 rc = ext2fs_mmp_clear(fs);
3243                 goto closefs;
3244         }
3245         if (journal_size || journal_device) {
3246                 rc = add_journal(fs);
3247                 if (rc)
3248                         goto closefs;
3249         }
3250
3251         if (Q_flag) {
3252                 if (mount_flags & EXT2_MF_MOUNTED) {
3253                         fputs(_("The quota feature may only be changed when "
3254                                 "the filesystem is unmounted.\n"), stderr);
3255                         rc = 1;
3256                         goto closefs;
3257                 }
3258                 rc = handle_quota_options(fs);
3259                 if (rc)
3260                         goto closefs;
3261         }
3262
3263         if (U_flag) {
3264                 int set_csum = 0;
3265                 dgrp_t i;
3266                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3267                 __u8 old_uuid[UUID_SIZE];
3268
3269                 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3270                         fputs(_("Cannot change the UUID of this filesystem "
3271                                 "because it has the stable_inodes feature "
3272                                 "flag.\n"), stderr);
3273                         exit(1);
3274                 }
3275
3276                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3277                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3278                      ext2fs_has_feature_ea_inode(fs->super))) {
3279                         rc = check_fsck_needed(fs,
3280                                 _("Setting the UUID on this "
3281                                   "filesystem could take some time."));
3282                         if (rc)
3283                                 goto closefs;
3284                         rewrite_checksums = REWRITE_ALL;
3285                 }
3286
3287                 if (ext2fs_has_group_desc_csum(fs)) {
3288                         /*
3289                          * Changing the UUID on a metadata_csum FS requires
3290                          * rewriting all metadata, which can race with a
3291                          * mounted fs.  Don't allow that unless we're saving
3292                          * the checksum seed.
3293                          */
3294                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3295                             !ext2fs_has_feature_csum_seed(fs->super) &&
3296                             ext2fs_has_feature_metadata_csum(fs->super)) {
3297                                 fputs(_("The UUID may only be "
3298                                         "changed when the filesystem is "
3299                                         "unmounted.\n"), stderr);
3300                                 fputs(_("If you only use kernels newer than "
3301                                         "v4.4, run 'tune2fs -O "
3302                                         "metadata_csum_seed' and re-run this "
3303                                         "command.\n"), stderr);
3304                                 try_confirm_csum_seed_support();
3305                                 rc = 1;
3306                                 goto closefs;
3307                         }
3308
3309                         /*
3310                          * Determine if the block group checksums are
3311                          * correct so we know whether or not to set
3312                          * them later on.
3313                          */
3314                         for (i = 0; i < fs->group_desc_count; i++)
3315                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3316                                         break;
3317                         if (i >= fs->group_desc_count)
3318                                 set_csum = 1;
3319                 }
3320
3321                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3322                 if ((strcasecmp(new_UUID, "null") == 0) ||
3323                     (strcasecmp(new_UUID, "clear") == 0)) {
3324                         uuid_clear(sb->s_uuid);
3325                 } else if (strcasecmp(new_UUID, "time") == 0) {
3326                         uuid_generate_time(sb->s_uuid);
3327                 } else if (strcasecmp(new_UUID, "random") == 0) {
3328                         uuid_generate(sb->s_uuid);
3329                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3330                         com_err(program_name, 0, "%s",
3331                                 _("Invalid UUID format\n"));
3332                         rc = 1;
3333                         goto closefs;
3334                 }
3335                 ext2fs_init_csum_seed(fs);
3336                 if (set_csum) {
3337                         for (i = 0; i < fs->group_desc_count; i++)
3338                                 ext2fs_group_desc_csum_set(fs, i);
3339                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3340                 }
3341
3342                 /* If this is a journal dev, we need to copy UUID into jsb */
3343                 if (!(rc = get_journal_sb(fs, buf))) {
3344                         journal_superblock_t *jsb;
3345
3346                         jsb = (journal_superblock_t *) buf;
3347                         fputs(_("Need to update journal superblock.\n"), stdout);
3348                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3349
3350                         /* Writeback the journal superblock */
3351                         if ((rc = io_channel_write_blk64(fs->io,
3352                                 ext2fs_journal_sb_start(fs->blocksize),
3353                                         -SUPERBLOCK_SIZE, buf)))
3354                                 goto closefs;
3355                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3356                         goto closefs;
3357                 else {
3358                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3359
3360                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3361                                 goto closefs;
3362                 }
3363
3364                 ext2fs_mark_super_dirty(fs);
3365         }
3366
3367         if (I_flag) {
3368                 if (mount_flags & EXT2_MF_MOUNTED) {
3369                         fputs(_("The inode size may only be "
3370                                 "changed when the filesystem is "
3371                                 "unmounted.\n"), stderr);
3372                         rc = 1;
3373                         goto closefs;
3374                 }
3375                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3376                         fputs(_("Changing the inode size not supported for "
3377                                 "filesystems with the flex_bg\n"
3378                                 "feature enabled.\n"),
3379                               stderr);
3380                         rc = 1;
3381                         goto closefs;
3382                 }
3383                 /*
3384                  * We want to update group descriptor also
3385                  * with the new free inode count
3386                  */
3387                 if (rewrite_checksums)
3388                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3389                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3390                 retval = resize_inode(fs, new_inode_size);
3391                 if (rewrite_checksums)
3392                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3393                 if (retval == 0) {
3394                         printf(_("Setting inode size %lu\n"),
3395                                                         new_inode_size);
3396                         rewrite_checksums = REWRITE_ALL;
3397                 } else {
3398                         printf("%s", _("Failed to change inode size\n"));
3399                         rc = 1;
3400                         goto closefs;
3401                 }
3402         }
3403
3404         if (rewrite_checksums)
3405                 rewrite_metadata_checksums(fs, rewrite_checksums);
3406
3407         if (l_flag)
3408                 list_super(sb);
3409         if (stride_set) {
3410                 sb->s_raid_stride = stride;
3411                 ext2fs_mark_super_dirty(fs);
3412                 printf(_("Setting stride size to %d\n"), stride);
3413         }
3414         if (stripe_width_set) {
3415                 sb->s_raid_stripe_width = stripe_width;
3416                 ext2fs_mark_super_dirty(fs);
3417                 printf(_("Setting stripe width to %d\n"), stripe_width);
3418         }
3419         if (ext_mount_opts) {
3420                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3421                         sizeof(fs->super->s_mount_opts));
3422                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3423                 ext2fs_mark_super_dirty(fs);
3424                 printf(_("Setting extended default mount options to '%s'\n"),
3425                        ext_mount_opts);
3426                 free(ext_mount_opts);
3427         }
3428
3429         free(device_name);
3430         remove_error_table(&et_ext2_error_table);
3431
3432 closefs:
3433         if (rc) {
3434                 ext2fs_mmp_stop(fs);
3435 #ifndef BUILD_AS_LIB
3436                 exit(1);
3437 #endif
3438         }
3439
3440         if (feature_64bit)
3441                 convert_64bit(fs, feature_64bit);
3442         return (ext2fs_close_free(&fs) ? 1 : 0);
3443 }