misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #include "config.h"
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #ifdef HAVE_STRINGS_H
  44 #include <strings.h>    /* for strcasecmp() */
  45 #else
  46 #define _BSD_SOURCE     /* for inclusion of strcasecmp() via <string.h> */
  47 #define _DEFAULT_SOURCE   /* since glibc 2.20 _BSD_SOURCE is deprecated */
  48 #endif
  49 #include <string.h>
  50 #include <time.h>
  51 #include <unistd.h>
  52 #include <sys/types.h>
  53 #include <libgen.h>
  54 #include <limits.h>
  55
  56 #include "ext2fs/ext2_fs.h"
  57 #include "ext2fs/ext2fs.h"
  58 #include "ext2fs/kernel-jbd.h"
  59 #include "et/com_err.h"
  60 #include "support/plausible.h"
  61 #include "support/quotaio.h"
  62 #include "uuid/uuid.h"
  63 #include "e2p/e2p.h"
  64 #include "util.h"
  65 #include "blkid/blkid.h"
  66
  67 #include "../version.h"
  68 #include "support/nls-enable.h"
  69
  70 #define QOPT_ENABLE     (1)
  71 #define QOPT_DISABLE    (-1)
  72
  73 extern int ask_yn(const char *string, int def);
  74
  75 const char *program_name = "tune2fs";
  76 char *device_name;
  77 char *new_label, *new_last_mounted, *new_UUID;
  78 char *io_options;
  79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  81 static int I_flag;
  82 static int clear_mmp;
  83 static time_t last_check_time;
  84 static int print_label;
  85 static int max_mount_count, mount_count, mount_flags;
  86 static unsigned long interval;
  87 static blk64_t reserved_blocks;
  88 static double reserved_ratio;
  89 static unsigned long resgid, resuid;
  90 static unsigned short errors;
  91 static int open_flag;
  92 static char *features_cmd;
  93 static char *mntopts_cmd;
  94 static int stride, stripe_width;
  95 static int stride_set, stripe_width_set;
  96 static char *extended_cmd;
  97 static unsigned long new_inode_size;
  98 static char *ext_mount_opts;
  99 static int quota_enable[MAXQUOTAS];
 100 static int rewrite_checksums;
 101 static int feature_64bit;
 102 static int fsck_requested;
 103 static char *undo_file;
 104
 105 int journal_size, journal_fc_size, journal_flags;
 106 char *journal_device;
 107 static blk64_t journal_location = ~0LL;
 108
 109 static struct list_head blk_move_list;
 110
 111 struct blk_move {
 112         struct list_head list;
 113         blk64_t old_loc;
 114         blk64_t new_loc;
 115 };
 116
 117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
 118
 119 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
 120
 121 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
 122 static const char *please_dir_fsck =
 123                 N_("Please run e2fsck -fD on the filesystem.\n");
 124
 125 #ifdef CONFIG_BUILD_FINDFS
 126 void do_findfs(int argc, char **argv);
 127 #endif
 128
 129 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
 130 int journal_enable_debug = -1;
 131 #endif
 132
 133 static void usage(void)
 134 {
 135         fprintf(stderr,
 136                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
 137                   "[-g group]\n"
 138                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 139                   "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
 140                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
 141                   "\t[-L volume_label] [-M last_mounted_dir]\n"
 142                   "\t[-O [^]feature[,...]] [-Q quota_options]\n"
 143                   "\t[-E extended-option[,...]] [-T last_check_time] "
 144                   "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
 145                 program_name);
 146         exit(1);
 147 }
 148
 149 static __u32 ok_features[3] = {
 150         /* Compat */
 151         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 152                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 153                 EXT4_FEATURE_COMPAT_FAST_COMMIT |
 154                 EXT4_FEATURE_COMPAT_STABLE_INODES,
 155         /* Incompat */
 156         EXT2_FEATURE_INCOMPAT_FILETYPE |
 157                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 158                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 159                 EXT4_FEATURE_INCOMPAT_EA_INODE|
 160                 EXT4_FEATURE_INCOMPAT_MMP |
 161                 EXT4_FEATURE_INCOMPAT_64BIT |
 162                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 163                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 164                 EXT4_FEATURE_INCOMPAT_LARGEDIR |
 165                 EXT4_FEATURE_INCOMPAT_CASEFOLD,
 166         /* R/O compat */
 167         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 168                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 169                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 170                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 171                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 172                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 173                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 174                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 175                 EXT4_FEATURE_RO_COMPAT_READONLY |
 176                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 177                 EXT4_FEATURE_RO_COMPAT_VERITY
 178 };
 179
 180 static __u32 clear_ok_features[3] = {
 181         /* Compat */
 182         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 183                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 184                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 185                 EXT4_FEATURE_COMPAT_FAST_COMMIT,
 186         /* Incompat */
 187         EXT2_FEATURE_INCOMPAT_FILETYPE |
 188                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 189                 EXT4_FEATURE_INCOMPAT_MMP |
 190                 EXT4_FEATURE_INCOMPAT_64BIT |
 191                 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
 192         /* R/O compat */
 193         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 194                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 195                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 196                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 197                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 198                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 199                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 200                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 201                 EXT4_FEATURE_RO_COMPAT_READONLY
 202 };
 203
 204 /**
 205  * Try to get journal super block if any
 206  */
 207 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 208 {
 209         int retval;
 210         journal_superblock_t *jsb;
 211
 212         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 213                 return EXT2_ET_UNSUPP_FEATURE;
 214         }
 215
 216         /* Get the journal superblock */
 217         if ((retval = io_channel_read_blk64(jfs->io,
 218             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 219                 com_err(program_name, retval, "%s",
 220                 _("while reading journal superblock"));
 221                 return retval;
 222         }
 223
 224         jsb = (journal_superblock_t *) buf;
 225         if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
 226             (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
 227                 fputs(_("Journal superblock not found!\n"), stderr);
 228                 return EXT2_ET_BAD_MAGIC;
 229         }
 230
 231         return 0;
 232 }
 233
 234 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
 235                           int nr_users)
 236 {
 237         int i;
 238         for (i = 0; i < nr_users; i++) {
 239                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 240                         return &s_users[i * UUID_SIZE];
 241         }
 242
 243         return NULL;
 244 }
 245
 246 /*
 247  * Remove an external journal from the filesystem
 248  */
 249 static int remove_journal_device(ext2_filsys fs)
 250 {
 251         char            *journal_path;
 252         ext2_filsys     jfs;
 253         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 254         journal_superblock_t    *jsb;
 255         int             i, nr_users;
 256         errcode_t       retval;
 257         int             commit_remove_journal = 0;
 258         io_manager      io_ptr;
 259
 260         if (f_flag)
 261                 commit_remove_journal = 1; /* force removal even if error */
 262
 263         uuid_unparse(fs->super->s_journal_uuid, buf);
 264         journal_path = blkid_get_devname(NULL, "UUID", buf);
 265
 266         if (!journal_path) {
 267                 journal_path =
 268                         ext2fs_find_block_device(fs->super->s_journal_dev);
 269                 if (!journal_path)
 270                         goto no_valid_journal;
 271         }
 272
 273 #ifdef CONFIG_TESTIO_DEBUG
 274         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 275                 io_ptr = test_io_manager;
 276                 test_io_backing_manager = unix_io_manager;
 277         } else
 278 #endif
 279                 io_ptr = unix_io_manager;
 280         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 281                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 282                              fs->blocksize, io_ptr, &jfs);
 283         if (retval) {
 284                 com_err(program_name, retval, "%s",
 285                         _("while trying to open external journal"));
 286                 goto no_valid_journal;
 287         }
 288
 289         if ((retval = get_journal_sb(jfs, buf))) {
 290                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 291                         fprintf(stderr, _("%s is not a journal device.\n"),
 292                                 journal_path);
 293                 goto no_valid_journal;
 294         }
 295
 296         jsb = (journal_superblock_t *) buf;
 297         /* Find the filesystem UUID */
 298         nr_users = ntohl(jsb->s_nr_users);
 299         if (nr_users > JBD2_USERS_MAX) {
 300                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
 301                                  "is too high (%d).\n"), nr_users);
 302                 commit_remove_journal = 1;
 303                 goto no_valid_journal;
 304         }
 305
 306         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 307                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 308                       stderr);
 309                 commit_remove_journal = 1;
 310                 goto no_valid_journal;
 311         }
 312         nr_users--;
 313         for (i = 0; i < nr_users; i++)
 314                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 315         jsb->s_nr_users = htonl(nr_users);
 316
 317         /* Write back the journal superblock */
 318         retval = io_channel_write_blk64(jfs->io,
 319                                         ext2fs_journal_sb_start(fs->blocksize),
 320                                         -SUPERBLOCK_SIZE, buf);
 321         if (retval) {
 322                 com_err(program_name, retval,
 323                         "while writing journal superblock.");
 324                 goto no_valid_journal;
 325         }
 326
 327         commit_remove_journal = 1;
 328
 329 no_valid_journal:
 330         if (commit_remove_journal == 0) {
 331                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 332                         "Use -f option to remove missing journal device.\n"),
 333                       stderr);
 334                 return 1;
 335         }
 336         fs->super->s_journal_dev = 0;
 337         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 338         uuid_clear(fs->super->s_journal_uuid);
 339         ext2fs_mark_super_dirty(fs);
 340         fputs(_("Journal removed\n"), stdout);
 341         free(journal_path);
 342
 343         return 0;
 344 }
 345
 346 /* Helper function for remove_journal_inode */
 347 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 348                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 349                                blk64_t ref_block EXT2FS_ATTR((unused)),
 350                                int ref_offset EXT2FS_ATTR((unused)),
 351                                void *private EXT2FS_ATTR((unused)))
 352 {
 353         blk64_t block;
 354         int     group;
 355
 356         block = *blocknr;
 357         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 358         group = ext2fs_group_of_blk2(fs, block);
 359         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 360         ext2fs_group_desc_csum_set(fs, group);
 361         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 362         return 0;
 363 }
 364
 365 /*
 366  * Remove the journal inode from the filesystem
 367  */
 368 static errcode_t remove_journal_inode(ext2_filsys fs)
 369 {
 370         struct ext2_inode       inode;
 371         errcode_t               retval;
 372         ext2_ino_t              ino = fs->super->s_journal_inum;
 373
 374         retval = ext2fs_read_inode(fs, ino,  &inode);
 375         if (retval) {
 376                 com_err(program_name, retval, "%s",
 377                         _("while reading journal inode"));
 378                 return retval;
 379         }
 380         if (ino == EXT2_JOURNAL_INO) {
 381                 retval = ext2fs_read_bitmaps(fs);
 382                 if (retval) {
 383                         com_err(program_name, retval, "%s",
 384                                 _("while reading bitmaps"));
 385                         return retval;
 386                 }
 387                 retval = ext2fs_block_iterate3(fs, ino,
 388                                                BLOCK_FLAG_READ_ONLY, NULL,
 389                                                release_blocks_proc, NULL);
 390                 if (retval) {
 391                         com_err(program_name, retval, "%s",
 392                                 _("while clearing journal inode"));
 393                         return retval;
 394                 }
 395                 memset(&inode, 0, sizeof(inode));
 396                 ext2fs_mark_bb_dirty(fs);
 397                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 398         } else
 399                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 400         retval = ext2fs_write_inode(fs, ino, &inode);
 401         if (retval) {
 402                 com_err(program_name, retval, "%s",
 403                         _("while writing journal inode"));
 404                 return retval;
 405         }
 406         fs->super->s_journal_inum = 0;
 407         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 408         ext2fs_mark_super_dirty(fs);
 409
 410         return 0;
 411 }
 412
 413 /*
 414  * Update the default mount options
 415  */
 416 static int update_mntopts(ext2_filsys fs, char *mntopts)
 417 {
 418         struct ext2_super_block *sb = fs->super;
 419
 420         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 421                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 422                         mntopts);
 423                 return 1;
 424         }
 425         ext2fs_mark_super_dirty(fs);
 426
 427         return 0;
 428 }
 429
 430 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
 431 {
 432         /* Refuse to modify anything but a freshly checked valid filesystem. */
 433         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 434             (fs->super->s_state & EXT2_ERROR_FS) ||
 435             (fs->super->s_lastcheck < fs->super->s_mtime)) {
 436                 puts(_(fsck_explain));
 437                 puts(_(please_fsck));
 438                 if (mount_flags & EXT2_MF_READONLY)
 439                         printf("%s", _("(and reboot afterwards!)\n"));
 440                 return 1;
 441         }
 442
 443         /* Give the admin a few seconds to bail out of a dangerous op. */
 444         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 445                 return 0;
 446
 447         puts(prompt);
 448         proceed_question(5);
 449
 450         return 0;
 451 }
 452
 453 static void request_dir_fsck_afterwards(ext2_filsys fs)
 454 {
 455         static int requested;
 456
 457         if (requested++)
 458                 return;
 459         fsck_requested++;
 460         fs->super->s_state &= ~EXT2_VALID_FS;
 461         puts(_(fsck_explain));
 462         puts(_(please_dir_fsck));
 463         if (mount_flags & EXT2_MF_READONLY)
 464                 printf("%s", _("(and reboot afterwards!)\n"));
 465 }
 466
 467 static void request_fsck_afterwards(ext2_filsys fs)
 468 {
 469         static int requested = 0;
 470
 471         if (requested++)
 472                 return;
 473         fsck_requested++;
 474         fs->super->s_state &= ~EXT2_VALID_FS;
 475         printf("\n%s\n", _(please_fsck));
 476         if (mount_flags & EXT2_MF_READONLY)
 477                 printf("%s", _("(and reboot afterwards!)\n"));
 478 }
 479
 480 static void convert_64bit(ext2_filsys fs, int direction)
 481 {
 482         /*
 483          * Is resize2fs going to demand a fsck run? Might as well tell the
 484          * user now.
 485          */
 486         if (!fsck_requested &&
 487             ((fs->super->s_state & EXT2_ERROR_FS) ||
 488              !(fs->super->s_state & EXT2_VALID_FS) ||
 489              fs->super->s_lastcheck < fs->super->s_mtime))
 490                 request_fsck_afterwards(fs);
 491         if (fsck_requested)
 492                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 493                         direction > 0 ? "-b" : "-s", fs->device_name);
 494         else
 495                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 496                         direction > 0 ? "-b" : "-s", fs->device_name);
 497
 498         if (undo_file)
 499                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 500         if (direction > 0)
 501                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 502         else
 503                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 504 }
 505
 506 /*
 507  * Rewrite directory blocks with checksums
 508  */
 509 struct rewrite_dir_context {
 510         char *buf;
 511         errcode_t errcode;
 512         ext2_ino_t dir;
 513         int is_htree:1;
 514         int clear_htree:1;
 515 };
 516
 517 static int rewrite_dir_block(ext2_filsys fs,
 518                              blk64_t    *blocknr,
 519                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 520                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 521                              int        ref_offset EXT2FS_ATTR((unused)),
 522                              void       *priv_data)
 523 {
 524         struct ext2_dx_countlimit *dcl = NULL;
 525         struct rewrite_dir_context *ctx = priv_data;
 526         int dcl_offset, changed = 0;
 527
 528         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 529                                               ctx->dir);
 530         if (ctx->errcode)
 531                 return BLOCK_ABORT;
 532
 533         /*
 534          * if htree node... Note that if we are clearing htree structures from
 535          * the directory, we treat the htree internal block as an ordinary leaf.
 536          * The code below will do the right thing and make space for checksum
 537          * there.
 538          */
 539         if (ctx->is_htree && !ctx->clear_htree)
 540                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 541                                          &dcl, &dcl_offset);
 542         if (dcl) {
 543                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 544                         /* Ensure limit is the max size */
 545                         int max_entries = (fs->blocksize - dcl_offset) /
 546                                           sizeof(struct ext2_dx_entry);
 547                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 548                                 changed = 1;
 549                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 550                         }
 551                 } else {
 552                         /* If htree block is full then rebuild the dir */
 553                         if (ext2fs_le16_to_cpu(dcl->count) ==
 554                             ext2fs_le16_to_cpu(dcl->limit)) {
 555                                 request_dir_fsck_afterwards(fs);
 556                                 return 0;
 557                         }
 558                         /*
 559                          * Ensure dcl->limit is small enough to leave room for
 560                          * the checksum tail.
 561                          */
 562                         int max_entries = (fs->blocksize - (dcl_offset +
 563                                                 sizeof(struct ext2_dx_tail))) /
 564                                           sizeof(struct ext2_dx_entry);
 565                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 566                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 567                         /* Always rewrite checksum */
 568                         changed = 1;
 569                 }
 570         } else {
 571                 unsigned int rec_len, name_size;
 572                 char *top = ctx->buf + fs->blocksize;
 573                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 574                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 575
 576                 /* Find last and penultimate dirent */
 577                 while ((char *)de < top) {
 578                         penultimate_de = last_de;
 579                         last_de = de;
 580                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 581                         if (!ctx->errcode && !rec_len)
 582                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 583                         if (ctx->errcode)
 584                                 return BLOCK_ABORT;
 585                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 586                 }
 587                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 588                 if (ctx->errcode)
 589                         return BLOCK_ABORT;
 590                 name_size = ext2fs_dirent_name_len(last_de);
 591
 592                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 593                         if (!penultimate_de)
 594                                 return 0;
 595                         if (last_de->inode ||
 596                             name_size ||
 597                             rec_len != sizeof(struct ext2_dir_entry_tail))
 598                                 return 0;
 599                         /*
 600                          * The last dirent is unused and the right length to
 601                          * have stored a checksum.  Erase it.
 602                          */
 603                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 604                                                           &rec_len);
 605                         if (!rec_len)
 606                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 607                         if (ctx->errcode)
 608                                 return BLOCK_ABORT;
 609                         ext2fs_set_rec_len(fs, rec_len +
 610                                         sizeof(struct ext2_dir_entry_tail),
 611                                         penultimate_de);
 612                         changed = 1;
 613                 } else {
 614                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 615                         struct ext2_dir_entry_tail *t;
 616
 617                         /*
 618                          * If the last dirent looks like the tail, just update
 619                          * the checksum.
 620                          */
 621                         if (!last_de->inode &&
 622                             rec_len == csum_size) {
 623                                 t = (struct ext2_dir_entry_tail *)last_de;
 624                                 t->det_reserved_name_len =
 625                                                 EXT2_DIR_NAME_LEN_CSUM;
 626                                 changed = 1;
 627                                 goto out;
 628                         }
 629                         if (name_size & 3)
 630                                 name_size = (name_size & ~3) + 4;
 631                         /* If there's not enough space for the tail, e2fsck */
 632                         if (rec_len <= (8 + name_size + csum_size)) {
 633                                 request_dir_fsck_afterwards(fs);
 634                                 return 0;
 635                         }
 636                         /* Shorten that last de and insert the tail */
 637                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 638                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 639                         ext2fs_initialize_dirent_tail(fs, t);
 640
 641                         /* Always update checksum */
 642                         changed = 1;
 643                 }
 644         }
 645
 646 out:
 647         if (!changed)
 648                 return 0;
 649
 650         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 651                                                0, ctx->dir);
 652         if (ctx->errcode)
 653                 return BLOCK_ABORT;
 654
 655         return 0;
 656 }
 657
 658 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 659                                    struct ext2_inode *inode)
 660 {
 661         errcode_t       retval;
 662         struct rewrite_dir_context ctx;
 663
 664         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 665         if (retval)
 666                 return retval;
 667
 668         ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
 669         ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
 670         ctx.dir = dir;
 671         ctx.errcode = 0;
 672         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 673                                                 BLOCK_FLAG_DATA_ONLY,
 674                                        0, rewrite_dir_block, &ctx);
 675
 676         ext2fs_free_mem(&ctx.buf);
 677         if (retval)
 678                 return retval;
 679
 680         if (ctx.is_htree && ctx.clear_htree) {
 681                 inode->i_flags &= ~EXT2_INDEX_FL;
 682                 retval = ext2fs_write_inode(fs, dir, inode);
 683                 if (retval)
 684                         return retval;
 685         }
 686
 687         return ctx.errcode;
 688 }
 689
 690 /*
 691  * Context information that does not change across rewrite_one_inode()
 692  * invocations.
 693  */
 694 struct rewrite_context {
 695         ext2_filsys fs;
 696         struct ext2_inode *zero_inode;
 697         char *ea_buf;
 698         int inode_size;
 699 };
 700
 701 #define fatal_err(code, args...)                \
 702         do {                                    \
 703                 com_err(__func__, code, args);  \
 704                 exit(1);                        \
 705         } while (0);
 706
 707 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 708                                  struct ext2_inode *inode)
 709 {
 710         errcode_t retval;
 711         ext2_file_t file;
 712         __u32 hash;
 713
 714         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 715         if (retval)
 716                 fatal_err(retval, "open ea_inode");
 717         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 718                                   NULL);
 719         if (retval)
 720                 fatal_err(retval, "read ea_inode");
 721         retval = ext2fs_file_close(file);
 722         if (retval)
 723                 fatal_err(retval, "close ea_inode");
 724
 725         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 726                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 727         ext2fs_set_ea_inode_hash(inode, hash);
 728 }
 729
 730 static int update_xattr_entry_hashes(ext2_filsys fs,
 731                                      struct ext2_ext_attr_entry *entry,
 732                                      struct ext2_ext_attr_entry *end)
 733 {
 734         int modified = 0;
 735         errcode_t retval;
 736
 737         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 738                 if (entry->e_value_inum) {
 739                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 740                                                              &entry->e_hash);
 741                         if (retval)
 742                                 fatal_err(retval, "hash ea_inode entry");
 743                         modified = 1;
 744                 }
 745                 entry = EXT2_EXT_ATTR_NEXT(entry);
 746         }
 747         return modified;
 748 }
 749
 750 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 751                                        struct ext2_inode_large *inode)
 752 {
 753         struct ext2_ext_attr_entry *start, *end;
 754         __u32 *ea_magic;
 755
 756         if (inode->i_extra_isize == 0)
 757                 return;
 758
 759         if (inode->i_extra_isize & 3 ||
 760             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 761                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 762
 763         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 764                                 inode->i_extra_isize);
 765         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 766                 return;
 767
 768         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 769         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 770
 771         update_xattr_entry_hashes(ctx->fs, start, end);
 772 }
 773
 774 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 775                                       char *block_buf)
 776 {
 777         struct ext2_ext_attr_header *header;
 778         struct ext2_ext_attr_entry *start, *end;
 779
 780         header = (struct ext2_ext_attr_header *)block_buf;
 781         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 782                 return;
 783
 784         start = (struct ext2_ext_attr_entry *)(header+1);
 785         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 786
 787         if (update_xattr_entry_hashes(ctx->fs, start, end))
 788                 ext2fs_ext_attr_block_rehash(header, end);
 789 }
 790
 791 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 792                               struct ext2_inode *inode)
 793 {
 794         blk64_t file_acl_block;
 795         errcode_t retval;
 796
 797         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 798                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 799                         return;
 800                 memset(inode, 0, ctx->inode_size);
 801         }
 802
 803         if (inode->i_flags & EXT4_EA_INODE_FL)
 804                 update_ea_inode_hash(ctx, ino, inode);
 805
 806         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 807                 update_inline_xattr_hashes(ctx,
 808                                            (struct ext2_inode_large *)inode);
 809
 810         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 811         if (retval)
 812                 fatal_err(retval, "while writing inode");
 813
 814         retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
 815         if (retval)
 816                 fatal_err(retval, "while rewriting extents");
 817
 818         if (LINUX_S_ISDIR(inode->i_mode) &&
 819             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 820                 retval = rewrite_directory(ctx->fs, ino, inode);
 821                 if (retval)
 822                         fatal_err(retval, "while rewriting directories");
 823         }
 824
 825         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 826         if (!file_acl_block)
 827                 return;
 828
 829         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 830                                        ino);
 831         if (retval)
 832                 fatal_err(retval, "while rewriting extended attribute");
 833
 834         update_block_xattr_hashes(ctx, ctx->ea_buf);
 835         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 836                                         ino);
 837         if (retval)
 838                 fatal_err(retval, "while rewriting extended attribute");
 839 }
 840
 841 #define REWRITE_EA_FL           0x01    /* Rewrite EA inodes */
 842 #define REWRITE_DIR_FL          0x02    /* Rewrite directories */
 843 #define REWRITE_NONDIR_FL       0x04    /* Rewrite other inodes */
 844 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
 845
 846 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
 847 {
 848         ext2_inode_scan scan;
 849         errcode_t       retval;
 850         ext2_ino_t      ino;
 851         struct ext2_inode *inode;
 852         int rewrite;
 853
 854         retval = ext2fs_get_mem(ctx->inode_size, &inode);
 855         if (retval)
 856                 fatal_err(retval, "while allocating memory");
 857
 858         retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
 859         if (retval)
 860                 fatal_err(retval, "while opening inode scan");
 861
 862         do {
 863                 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 864                                                     ctx->inode_size);
 865                 if (retval)
 866                         fatal_err(retval, "while getting next inode");
 867                 if (!ino)
 868                         break;
 869
 870                 rewrite = 0;
 871                 if (inode->i_flags & EXT4_EA_INODE_FL) {
 872                         if (flags & REWRITE_EA_FL)
 873                                 rewrite = 1;
 874                 } else if (LINUX_S_ISDIR(inode->i_mode)) {
 875                         if (flags & REWRITE_DIR_FL)
 876                                 rewrite = 1;
 877                 } else {
 878                         if (flags & REWRITE_NONDIR_FL)
 879                                 rewrite = 1;
 880                 }
 881                 if (rewrite)
 882                         rewrite_one_inode(ctx, ino, inode);
 883         } while (ino);
 884         ext2fs_close_inode_scan(scan);
 885         ext2fs_free_mem(&inode);
 886 }
 887
 888 /*
 889  * Forcibly rewrite checksums in inodes specified by 'flags'
 890  */
 891 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
 892 {
 893         struct rewrite_context ctx = {
 894                 .fs = fs,
 895                 .inode_size = EXT2_INODE_SIZE(fs->super),
 896         };
 897         errcode_t retval;
 898
 899         if (fs->super->s_creator_os == EXT2_OS_HURD)
 900                 return;
 901
 902         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 903         if (retval)
 904                 fatal_err(retval, "while allocating memory");
 905
 906         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 907         if (retval)
 908                 fatal_err(retval, "while allocating memory");
 909
 910         /*
 911          * Extended attribute inodes have a lookup hash that needs to be
 912          * recalculated with the new csum_seed. Other inodes referencing xattr
 913          * inodes need this value to be up to date. That's why we do two passes:
 914          *
 915          * pass 1: update xattr inodes to update their lookup hash as well as
 916          *         other checksums.
 917          *
 918          * pass 2: go over other inodes to update their checksums.
 919          */
 920         if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
 921                 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
 922         flags &= ~REWRITE_EA_FL;
 923         rewrite_inodes_pass(&ctx, flags);
 924
 925         ext2fs_free_mem(&ctx.zero_inode);
 926         ext2fs_free_mem(&ctx.ea_buf);
 927 }
 928
 929 static void rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
 930 {
 931         errcode_t retval;
 932         dgrp_t i;
 933
 934         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 935         ext2fs_init_csum_seed(fs);
 936         for (i = 0; i < fs->group_desc_count; i++)
 937                 ext2fs_group_desc_csum_set(fs, i);
 938         retval = ext2fs_read_bitmaps(fs);
 939         if (retval)
 940                 fatal_err(retval, "while reading bitmaps");
 941         rewrite_inodes(fs, flags);
 942         ext2fs_mark_ib_dirty(fs);
 943         ext2fs_mark_bb_dirty(fs);
 944         ext2fs_mmp_update2(fs, 1);
 945         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 946         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 947         if (ext2fs_has_feature_metadata_csum(fs->super))
 948                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 949         else
 950                 fs->super->s_checksum_type = 0;
 951         ext2fs_mark_super_dirty(fs);
 952 }
 953
 954 static void enable_uninit_bg(ext2_filsys fs)
 955 {
 956         struct ext2_group_desc *gd;
 957         dgrp_t i;
 958
 959         for (i = 0; i < fs->group_desc_count; i++) {
 960                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 961                 gd->bg_itable_unused = 0;
 962                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 963                 ext2fs_group_desc_csum_set(fs, i);
 964         }
 965         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 966 }
 967
 968 static errcode_t zero_empty_inodes(ext2_filsys fs)
 969 {
 970         int length = EXT2_INODE_SIZE(fs->super);
 971         struct ext2_inode *inode = NULL;
 972         ext2_inode_scan scan;
 973         errcode_t       retval;
 974         ext2_ino_t      ino;
 975
 976         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 977         if (retval)
 978                 goto out;
 979
 980         retval = ext2fs_get_mem(length, &inode);
 981         if (retval)
 982                 goto out;
 983
 984         do {
 985                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 986                 if (retval)
 987                         goto out;
 988                 if (!ino)
 989                         break;
 990                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 991                         memset(inode, 0, length);
 992                         retval = ext2fs_write_inode_full(fs, ino, inode,
 993                                                          length);
 994                         if (retval)
 995                                 goto out;
 996                 }
 997         } while (1);
 998
 999 out:
1000         ext2fs_free_mem(&inode);
1001         ext2fs_close_inode_scan(scan);
1002         return retval;
1003 }
1004
1005 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1006 {
1007         struct ext2_group_desc *gd;
1008         dgrp_t i;
1009         errcode_t retval;
1010         blk64_t b, c, d;
1011
1012         /* Load bitmaps to ensure that the uninit ones get written out */
1013         fs->super->s_feature_ro_compat |= csum_feature_flag;
1014         retval = ext2fs_read_bitmaps(fs);
1015         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1016         if (retval) {
1017                 com_err("disable_uninit_bg", retval,
1018                         "while reading bitmaps");
1019                 request_fsck_afterwards(fs);
1020                 return retval;
1021         }
1022         ext2fs_mark_ib_dirty(fs);
1023         ext2fs_mark_bb_dirty(fs);
1024
1025         /* If we're only turning off uninit_bg, zero the inodes */
1026         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1027                 retval = zero_empty_inodes(fs);
1028                 if (retval) {
1029                         com_err("disable_uninit_bg", retval,
1030                                 "while zeroing unused inodes");
1031                         request_fsck_afterwards(fs);
1032                         return retval;
1033                 }
1034         }
1035
1036         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1037         for (i = 0; i < fs->group_desc_count; i++) {
1038                 b = ext2fs_block_bitmap_loc(fs, i);
1039                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1040                 b = ext2fs_inode_bitmap_loc(fs, i);
1041                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1042
1043                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1044                 if (retval == 0 && b)
1045                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1046                 if (retval == 0 && c)
1047                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1048                 if (retval == 0 && d)
1049                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1050                 if (retval) {
1051                         com_err("disable_uninit_bg", retval,
1052                                 "while initializing block bitmaps");
1053                         request_fsck_afterwards(fs);
1054                 }
1055
1056                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1057                 gd->bg_itable_unused = 0;
1058                 gd->bg_flags = 0;
1059                 ext2fs_group_desc_csum_set(fs, i);
1060         }
1061         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1062         ext2fs_mark_super_dirty(fs);
1063
1064         return 0;
1065 }
1066
1067 static void
1068 try_confirm_csum_seed_support(void)
1069 {
1070         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1071                 fputs(_("WARNING: Could not confirm kernel support for "
1072                         "metadata_csum_seed.\n  This requires Linux >= "
1073                         "v4.4.\n"), stderr);
1074 }
1075
1076 /*
1077  * Update the feature set as provided by the user.
1078  */
1079 static int update_feature_set(ext2_filsys fs, char *features)
1080 {
1081         struct ext2_super_block *sb = fs->super;
1082         __u32           old_features[3];
1083         int             type_err;
1084         unsigned int    mask_err;
1085         errcode_t       err;
1086         enum quota_type qtype;
1087
1088 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1089                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1090 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1091                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1092 #define FEATURE_CHANGED(type, mask) ((mask) & \
1093                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1094
1095         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1096         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1097         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1098
1099         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1100                               ok_features, clear_ok_features,
1101                               &type_err, &mask_err)) {
1102                 if (!mask_err)
1103                         fprintf(stderr,
1104                                 _("Invalid filesystem option set: %s\n"),
1105                                 features);
1106                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1107                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1108                                           "not supported.\n"),
1109                                 e2p_feature2string(type_err &
1110                                                    E2P_FEATURE_TYPE_MASK,
1111                                                    mask_err));
1112                 else
1113                         fprintf(stderr, _("Setting filesystem feature '%s' "
1114                                           "not supported.\n"),
1115                                 e2p_feature2string(type_err, mask_err));
1116                 return 1;
1117         }
1118
1119         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1120                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1121                     !(mount_flags & EXT2_MF_READONLY)) {
1122                         fputs(_("The has_journal feature may only be "
1123                                 "cleared when the filesystem is\n"
1124                                 "unmounted or mounted "
1125                                 "read-only.\n"), stderr);
1126                         return 1;
1127                 }
1128                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1129                     f_flag < 2) {
1130                         fputs(_("The needs_recovery flag is set.  "
1131                                 "Please run e2fsck before clearing\n"
1132                                 "the has_journal flag.\n"), stderr);
1133                         return 1;
1134                 }
1135                 if (sb->s_journal_inum) {
1136                         if (remove_journal_inode(fs))
1137                                 return 1;
1138                 }
1139                 if (sb->s_journal_dev) {
1140                         if (remove_journal_device(fs))
1141                                 return 1;
1142                 }
1143         }
1144
1145         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1146                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1147                 if (ext2fs_has_feature_meta_bg(sb)) {
1148                         fputs(_("Setting filesystem feature 'sparse_super' "
1149                                 "not supported\nfor filesystems with "
1150                                 "the meta_bg feature enabled.\n"),
1151                                 stderr);
1152                         return 1;
1153                 }
1154         }
1155
1156         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1157                 int error;
1158
1159                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1160                     (mount_flags & EXT2_MF_READONLY)) {
1161                         fputs(_("The multiple mount protection feature can't\n"
1162                                 "be set if the filesystem is mounted or\n"
1163                                 "read-only.\n"), stderr);
1164                         return 1;
1165                 }
1166
1167                 error = ext2fs_mmp_init(fs);
1168                 if (error) {
1169                         fputs(_("\nError while enabling multiple mount "
1170                                 "protection feature."), stderr);
1171                         return 1;
1172                 }
1173
1174                 /*
1175                  * We want to update group desc with the new free blocks count
1176                  */
1177                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1178
1179                 printf(_("Multiple mount protection has been enabled "
1180                          "with update interval %ds.\n"),
1181                        sb->s_mmp_update_interval);
1182         }
1183
1184         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1185                 int error;
1186
1187                 if (mount_flags & EXT2_MF_READONLY) {
1188                         fputs(_("The multiple mount protection feature cannot\n"
1189                                 "be disabled if the filesystem is readonly.\n"),
1190                                 stderr);
1191                         return 1;
1192                 }
1193
1194                 error = ext2fs_read_bitmaps(fs);
1195                 if (error) {
1196                         fputs(_("Error while reading bitmaps\n"), stderr);
1197                         return 1;
1198                 }
1199
1200                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1201                 if (error) {
1202                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1203
1204                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1205                                 printf(_("Magic number in MMP block does not "
1206                                          "match. expected: %x, actual: %x\n"),
1207                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1208                         else
1209                                 com_err(program_name, error, "%s",
1210                                         _("while reading MMP block."));
1211                         goto mmp_error;
1212                 }
1213
1214                 /* We need to force out the group descriptors as well */
1215                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1216                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1217 mmp_error:
1218                 sb->s_mmp_block = 0;
1219                 sb->s_mmp_update_interval = 0;
1220         }
1221
1222         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1223                 /*
1224                  * If adding a journal flag, let the create journal
1225                  * code below handle setting the flag and creating the
1226                  * journal.  We supply a default size if necessary.
1227                  */
1228                 if (!journal_size)
1229                         journal_size = -1;
1230                 ext2fs_clear_feature_journal(sb);
1231         }
1232
1233         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1234                 if (!sb->s_def_hash_version)
1235                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1236                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1237                         uuid_generate((unsigned char *) sb->s_hash_seed);
1238         }
1239
1240         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1241             ext2fs_has_feature_metadata_csum(sb)) {
1242                 if (check_fsck_needed(fs,
1243                         _("Disabling directory index on filesystem with "
1244                           "checksums could take some time.")))
1245                         return 1;
1246                 if (mount_flags & EXT2_MF_MOUNTED) {
1247                         fputs(_("Cannot disable dir_index on a mounted "
1248                                 "filesystem!\n"), stderr);
1249                         exit(1);
1250                 }
1251                 /*
1252                  * Clearing dir_index on checksummed filesystem requires
1253                  * rewriting all directories to update checksums.
1254                  */
1255                 rewrite_checksums |= REWRITE_DIR_FL;
1256         }
1257
1258         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1259                 if (ext2fs_check_desc(fs)) {
1260                         fputs(_("Clearing the flex_bg flag would "
1261                                 "cause the the filesystem to be\n"
1262                                 "inconsistent.\n"), stderr);
1263                         return 1;
1264                 }
1265         }
1266
1267         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1268                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1269                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1270                     !(mount_flags & EXT2_MF_READONLY)) {
1271                         fputs(_("The huge_file feature may only be "
1272                                 "cleared when the filesystem is\n"
1273                                 "unmounted or mounted "
1274                                 "read-only.\n"), stderr);
1275                         return 1;
1276                 }
1277         }
1278
1279         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1280                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1281                 if (check_fsck_needed(fs,
1282                         _("Enabling checksums could take some time.")))
1283                         return 1;
1284                 if (mount_flags & EXT2_MF_MOUNTED) {
1285                         fputs(_("Cannot enable metadata_csum on a mounted "
1286                                 "filesystem!\n"), stderr);
1287                         return 1;
1288                 }
1289                 if (!ext2fs_has_feature_extents(fs->super))
1290                         printf("%s",
1291                                _("Extents are not enabled.  The file extent "
1292                                  "tree can be checksummed, whereas block maps "
1293                                  "cannot.  Not enabling extents reduces the "
1294                                  "coverage of metadata checksumming.  "
1295                                  "Re-run with -O extent to rectify.\n"));
1296                 if (!ext2fs_has_feature_64bit(fs->super))
1297                         printf("%s",
1298                                _("64-bit filesystem support is not enabled.  "
1299                                  "The larger fields afforded by this feature "
1300                                  "enable full-strength checksumming.  "
1301                                  "Run resize2fs -b to rectify.\n"));
1302                 rewrite_checksums = REWRITE_ALL;
1303                 /* metadata_csum supersedes uninit_bg */
1304                 ext2fs_clear_feature_gdt_csum(fs->super);
1305
1306                 /* if uninit_bg was previously off, rewrite group desc */
1307                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1308                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1309                         enable_uninit_bg(fs);
1310
1311                 /*
1312                  * Since metadata_csum supersedes uninit_bg, pretend like
1313                  * uninit_bg has been off all along.
1314                  */
1315                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1316                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1317         }
1318
1319         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1320                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1321                 __u32   test_features[3];
1322
1323                 if (check_fsck_needed(fs,
1324                         _("Disabling checksums could take some time.")))
1325                         return 1;
1326                 if (mount_flags & EXT2_MF_MOUNTED) {
1327                         fputs(_("Cannot disable metadata_csum on a mounted "
1328                                 "filesystem!\n"), stderr);
1329                         return 1;
1330                 }
1331                 rewrite_checksums = REWRITE_ALL;
1332
1333                 /* Enable uninit_bg unless the user expressly turned it off */
1334                 memcpy(test_features, old_features, sizeof(test_features));
1335                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1336                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1337                 e2p_edit_feature2(features, test_features, ok_features,
1338                                   clear_ok_features, NULL, NULL);
1339                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1340                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1341                         ext2fs_set_feature_gdt_csum(fs->super);
1342
1343                 /*
1344                  * If we're turning off metadata_csum and not turning on
1345                  * uninit_bg, rewrite group desc.
1346                  */
1347                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1348                         err = disable_uninit_bg(fs,
1349                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1350                         if (err)
1351                                 return 1;
1352                 } else
1353                         /*
1354                          * metadata_csum previously provided uninit_bg, so if
1355                          * we're also setting the uninit_bg feature bit,
1356                          * pretend like it was previously enabled.  Checksums
1357                          * will be rewritten with crc16 later.
1358                          */
1359                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1360                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1361                 fs->super->s_checksum_seed = 0;
1362                 ext2fs_clear_feature_csum_seed(fs->super);
1363         }
1364
1365         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1366                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1367                 if (mount_flags & EXT2_MF_MOUNTED) {
1368                         fputs(_("Cannot enable uninit_bg on a mounted "
1369                                 "filesystem!\n"), stderr);
1370                         return 1;
1371                 }
1372
1373                 /* Do not enable uninit_bg when metadata_csum enabled */
1374                 if (ext2fs_has_feature_metadata_csum(fs->super))
1375                         ext2fs_clear_feature_gdt_csum(fs->super);
1376                 else
1377                         enable_uninit_bg(fs);
1378         }
1379
1380         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1381                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1382                 if (mount_flags & EXT2_MF_MOUNTED) {
1383                         fputs(_("Cannot disable uninit_bg on a mounted "
1384                                 "filesystem!\n"), stderr);
1385                         return 1;
1386                 }
1387
1388                 err = disable_uninit_bg(fs,
1389                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1390                 if (err)
1391                         return 1;
1392         }
1393
1394         /*
1395          * We don't actually toggle 64bit; resize2fs does that.  But this
1396          * must come after the metadata_csum feature_on so that it won't
1397          * complain about the lack of 64bit.
1398          */
1399         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1400                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1401                 if (mount_flags & EXT2_MF_MOUNTED) {
1402                         fprintf(stderr, _("Cannot enable 64-bit mode "
1403                                           "while mounted!\n"));
1404                         return 1;
1405                 }
1406                 ext2fs_clear_feature_64bit(sb);
1407                 feature_64bit = 1;
1408         }
1409         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1410                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1411                 if (mount_flags & EXT2_MF_MOUNTED) {
1412                         fprintf(stderr, _("Cannot disable 64-bit mode "
1413                                           "while mounted!\n"));
1414                         return 1;
1415                 }
1416                 ext2fs_set_feature_64bit(sb);
1417                 feature_64bit = -1;
1418         }
1419
1420         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1421                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1422                 /*
1423                  * Set the Q_flag here and handle the quota options in the code
1424                  * below.
1425                  */
1426                 if (!Q_flag) {
1427                         Q_flag = 1;
1428                         /* Enable usr/grp quota by default */
1429                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1430                                 if (qtype != PRJQUOTA)
1431                                         quota_enable[qtype] = QOPT_ENABLE;
1432                                 else
1433                                         quota_enable[qtype] = QOPT_DISABLE;
1434                         }
1435                 }
1436                 ext2fs_clear_feature_quota(sb);
1437         }
1438
1439         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1440                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1441                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1442                         fprintf(stderr, _("Cannot enable project feature; "
1443                                           "inode size too small.\n"));
1444                         return 1;
1445                 }
1446                 Q_flag = 1;
1447                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1448         }
1449
1450         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1451                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1452                 Q_flag = 1;
1453                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1454         }
1455
1456         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1457                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1458                 /*
1459                  * Set the Q_flag here and handle the quota options in the code
1460                  * below.
1461                  */
1462                 if (Q_flag)
1463                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1464                                 "arguments.\n"), stderr);
1465                 Q_flag = 1;
1466                 /* Disable all quota by default */
1467                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1468                         quota_enable[qtype] = QOPT_DISABLE;
1469         }
1470
1471         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1472                 if (ext2fs_has_feature_casefold(sb)) {
1473                         fputs(_("Cannot enable encrypt feature on filesystems "
1474                                 "with the casefold feature enabled.\n"),
1475                               stderr);
1476                         return 1;
1477                 }
1478                 fs->super->s_encrypt_algos[0] =
1479                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1480                 fs->super->s_encrypt_algos[1] =
1481                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1482         }
1483
1484         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1485                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1486                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1487                         fputs(_("Setting feature 'metadata_csum_seed' "
1488                                 "is only supported\non filesystems with "
1489                                 "the metadata_csum feature enabled.\n"),
1490                                 stderr);
1491                         return 1;
1492                 }
1493                 try_confirm_csum_seed_support();
1494                 fs->super->s_checksum_seed = fs->csum_seed;
1495         }
1496
1497         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1498                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1499                 __le32 uuid_seed;
1500
1501                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1502                                         sizeof(fs->super->s_uuid));
1503                 if (fs->super->s_checksum_seed != uuid_seed) {
1504                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1505                                 fputs(_("UUID has changed since enabling "
1506                 "metadata_csum.  Filesystem must be unmounted "
1507                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1508                                       stderr);
1509                                 return 1;
1510                         }
1511                         if (check_fsck_needed(fs, _("Recalculating checksums "
1512                                                     "could take some time.")))
1513                                 return 1;
1514                         rewrite_checksums = REWRITE_ALL;
1515                 }
1516         }
1517
1518         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1519                 if (ext2fs_has_feature_encrypt(sb)) {
1520                         fputs(_("Cannot enable casefold feature on filesystems "
1521                                 "with the encrypt feature enabled.\n"),
1522                               stderr);
1523                         return 1;
1524                 }
1525
1526                 sb->s_encoding = EXT4_ENC_UTF8_12_1;
1527                 sb->s_encoding_flags = e2p_get_encoding_flags(sb->s_encoding);
1528         }
1529
1530         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1531             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1532              sb->s_feature_incompat))
1533                 ext2fs_update_dynamic_rev(fs);
1534
1535         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1536                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1537             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1538                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1539             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1540                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1541             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1542                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1543             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1544                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1545                 request_fsck_afterwards(fs);
1546
1547         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1548             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1549             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1550                 ext2fs_mark_super_dirty(fs);
1551
1552         return 0;
1553 }
1554
1555 /*
1556  * Add a journal to the filesystem.
1557  */
1558 static int add_journal(ext2_filsys fs)
1559 {
1560         struct ext2fs_journal_params    jparams;
1561         errcode_t       retval;
1562         ext2_filsys     jfs;
1563         io_manager      io_ptr;
1564
1565         if (ext2fs_has_feature_journal(fs->super)) {
1566                 fputs(_("The filesystem already has a journal.\n"), stderr);
1567                 goto err;
1568         }
1569         if (journal_device) {
1570                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1571                                         NULL))
1572                         proceed_question(-1);
1573                 check_mount(journal_device, 0, _("journal"));
1574 #ifdef CONFIG_TESTIO_DEBUG
1575                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1576                         io_ptr = test_io_manager;
1577                         test_io_backing_manager = unix_io_manager;
1578                 } else
1579 #endif
1580                         io_ptr = unix_io_manager;
1581                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1582                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1583                                      fs->blocksize, io_ptr, &jfs);
1584                 if (retval) {
1585                         com_err(program_name, retval,
1586                                 _("\n\twhile trying to open journal on %s\n"),
1587                                 journal_device);
1588                         goto err;
1589                 }
1590                 printf(_("Creating journal on device %s: "),
1591                        journal_device);
1592                 fflush(stdout);
1593
1594                 retval = ext2fs_add_journal_device(fs, jfs);
1595                 ext2fs_close_free(&jfs);
1596                 if (retval) {
1597                         com_err(program_name, retval,
1598                                 _("while adding filesystem to journal on %s"),
1599                                 journal_device);
1600                         goto err;
1601                 }
1602                 fputs(_("done\n"), stdout);
1603         } else if (journal_size) {
1604                 fputs(_("Creating journal inode: "), stdout);
1605                 fflush(stdout);
1606                 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1607
1608                 if (journal_location_string)
1609                         journal_location =
1610                                 parse_num_blocks2(journal_location_string,
1611                                                   fs->super->s_log_block_size);
1612                 retval = ext2fs_add_journal_inode3(fs, &jparams,
1613                                                    journal_location,
1614                                                    journal_flags);
1615                 if (retval) {
1616                         fprintf(stderr, "\n");
1617                         com_err(program_name, retval, "%s",
1618                                 _("\n\twhile trying to create journal file"));
1619                         return retval;
1620                 } else
1621                         fputs(_("done\n"), stdout);
1622                 /*
1623                  * If the filesystem wasn't mounted, we need to force
1624                  * the block group descriptors out.
1625                  */
1626                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1627                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1628         }
1629         print_check_message(fs->super->s_max_mnt_count,
1630                             fs->super->s_checkinterval);
1631         return 0;
1632
1633 err:
1634         free(journal_device);
1635         return 1;
1636 }
1637
1638 static int handle_quota_options(ext2_filsys fs)
1639 {
1640         errcode_t retval;
1641         quota_ctx_t qctx;
1642         ext2_ino_t qf_ino;
1643         enum quota_type qtype;
1644         unsigned int qtype_bits = 0;
1645         int need_dirty = 0;
1646
1647         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1648                 if (quota_enable[qtype] != 0)
1649                         break;
1650         if (qtype == MAXQUOTAS)
1651                 /* Nothing to do. */
1652                 return 0;
1653
1654         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1655             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1656                 fprintf(stderr, _("Cannot enable project quota; "
1657                                   "inode size too small.\n"));
1658                 return 1;
1659         }
1660
1661         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1662                 if (quota_enable[qtype] == QOPT_ENABLE)
1663                         qtype_bits |= 1 << qtype;
1664         }
1665
1666         retval = quota_init_context(&qctx, fs, qtype_bits);
1667         if (retval) {
1668                 com_err(program_name, retval,
1669                         _("while initializing quota context in support library"));
1670                 return 1;
1671         }
1672
1673         if (qtype_bits)
1674                 quota_compute_usage(qctx);
1675
1676         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1677                 if (quota_enable[qtype] == QOPT_ENABLE &&
1678                     *quota_sb_inump(fs->super, qtype) == 0) {
1679                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1680                                 retval = quota_update_limits(qctx, qf_ino,
1681                                                              qtype);
1682                                 if (retval) {
1683                                         com_err(program_name, retval,
1684                                                 _("while updating quota limits (%d)"),
1685                                                 qtype);
1686                                 quota_errout:
1687                                         quota_release_context(&qctx);
1688                                         return 1;
1689                                 }
1690                         }
1691                         retval = quota_write_inode(qctx, 1 << qtype);
1692                         if (retval) {
1693                                 com_err(program_name, retval,
1694                                         _("while writing quota file (%d)"),
1695                                         qtype);
1696                                 goto quota_errout;
1697                         }
1698                         /* Enable Quota feature if one of quota enabled */
1699                         if (!ext2fs_has_feature_quota(fs->super)) {
1700                                 ext2fs_set_feature_quota(fs->super);
1701                                 need_dirty = 1;
1702                         }
1703                         if (qtype == PRJQUOTA &&
1704                             !ext2fs_has_feature_project(fs->super)) {
1705                                 ext2fs_set_feature_project(fs->super);
1706                                 need_dirty = 1;
1707                         }
1708                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1709                         retval = quota_remove_inode(fs, qtype);
1710                         if (retval) {
1711                                 com_err(program_name, retval,
1712                                         _("while removing quota file (%d)"),
1713                                         qtype);
1714                                 goto quota_errout;
1715                         }
1716                         if (qtype == PRJQUOTA) {
1717                                 ext2fs_clear_feature_project(fs->super);
1718                                 need_dirty = 1;
1719                         }
1720                 }
1721         }
1722
1723         quota_release_context(&qctx);
1724         /* Clear Quota feature if all quota types disabled. */
1725         if (!qtype_bits) {
1726                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1727                         if (*quota_sb_inump(fs->super, qtype))
1728                                 break;
1729                 if (qtype == MAXQUOTAS) {
1730                         ext2fs_clear_feature_quota(fs->super);
1731                         need_dirty = 1;
1732                 }
1733
1734         }
1735         if (need_dirty)
1736                 ext2fs_mark_super_dirty(fs);
1737         return 0;
1738 }
1739
1740 static int option_handle_function(char *token)
1741 {
1742         if (strncmp(token, "usr", 3) == 0) {
1743                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1744         } else if (strncmp(token, "^usr", 4) == 0) {
1745                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1746         } else if (strncmp(token, "grp", 3) == 0) {
1747                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1748         } else if (strncmp(token, "^grp", 4) == 0) {
1749                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1750         } else if (strncmp(token, "prj", 3) == 0) {
1751                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1752         } else if (strncmp(token, "^prj", 4) == 0) {
1753                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1754         } else {
1755                 fputs(_("\nBad quota options specified.\n\n"
1756                         "Following valid quota options are available "
1757                         "(pass by separating with comma):\n"
1758                         "\t[^]usr[quota]\n"
1759                         "\t[^]grp[quota]\n"
1760                         "\t[^]prj[quota]\n"
1761                         "\n\n"), stderr);
1762                 return 1;
1763         }
1764         return 0;
1765 }
1766
1767 static void parse_e2label_options(int argc, char ** argv)
1768 {
1769         if ((argc < 2) || (argc > 3)) {
1770                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1771                 exit(1);
1772         }
1773         io_options = strchr(argv[1], '?');
1774         if (io_options)
1775                 *io_options++ = 0;
1776         device_name = blkid_get_devname(NULL, argv[1], NULL);
1777         if (!device_name) {
1778                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1779                         argv[1]);
1780                 exit(1);
1781         }
1782         open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1783         if (argc == 3) {
1784                 open_flag |= EXT2_FLAG_RW;
1785                 L_flag = 1;
1786                 new_label = argv[2];
1787         } else
1788                 print_label++;
1789 }
1790
1791 static time_t parse_time(char *str)
1792 {
1793         struct  tm      ts;
1794
1795         if (strcmp(str, "now") == 0) {
1796                 return (time(0));
1797         }
1798         memset(&ts, 0, sizeof(ts));
1799 #ifdef HAVE_STRPTIME
1800         strptime(str, "%Y%m%d%H%M%S", &ts);
1801 #else
1802         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1803                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1804         ts.tm_year -= 1900;
1805         ts.tm_mon -= 1;
1806         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1807             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1808             ts.tm_min > 59 || ts.tm_sec > 61)
1809                 ts.tm_mday = 0;
1810 #endif
1811         if (ts.tm_mday == 0) {
1812                 com_err(program_name, 0,
1813                         _("Couldn't parse date/time specifier: %s"),
1814                         str);
1815                 usage();
1816         }
1817         ts.tm_isdst = -1;
1818         return (mktime(&ts));
1819 }
1820
1821 static void parse_tune2fs_options(int argc, char **argv)
1822 {
1823         int c;
1824         char *tmp;
1825         struct group *gr;
1826         struct passwd *pw;
1827         int ret;
1828         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1829
1830         open_flag = 0;
1831         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1832         while ((c = getopt(argc, argv, optstring)) != EOF)
1833                 switch (c) {
1834                 case 'c':
1835                         max_mount_count = strtol(optarg, &tmp, 0);
1836                         if (*tmp || max_mount_count > 16000) {
1837                                 com_err(program_name, 0,
1838                                         _("bad mounts count - %s"),
1839                                         optarg);
1840                                 usage();
1841                         }
1842                         if (max_mount_count == 0)
1843                                 max_mount_count = -1;
1844                         c_flag = 1;
1845                         open_flag = EXT2_FLAG_RW;
1846                         break;
1847                 case 'C':
1848                         mount_count = strtoul(optarg, &tmp, 0);
1849                         if (*tmp || mount_count > 16000) {
1850                                 com_err(program_name, 0,
1851                                         _("bad mounts count - %s"),
1852                                         optarg);
1853                                 usage();
1854                         }
1855                         C_flag = 1;
1856                         open_flag = EXT2_FLAG_RW;
1857                         break;
1858                 case 'e':
1859                         if (strcmp(optarg, "continue") == 0)
1860                                 errors = EXT2_ERRORS_CONTINUE;
1861                         else if (strcmp(optarg, "remount-ro") == 0)
1862                                 errors = EXT2_ERRORS_RO;
1863                         else if (strcmp(optarg, "panic") == 0)
1864                                 errors = EXT2_ERRORS_PANIC;
1865                         else {
1866                                 com_err(program_name, 0,
1867                                         _("bad error behavior - %s"),
1868                                         optarg);
1869                                 usage();
1870                         }
1871                         e_flag = 1;
1872                         open_flag = EXT2_FLAG_RW;
1873                         break;
1874                 case 'E':
1875                         extended_cmd = optarg;
1876                         open_flag |= EXT2_FLAG_RW;
1877                         break;
1878                 case 'f': /* Force */
1879                         f_flag++;
1880                         break;
1881                 case 'g':
1882                         resgid = strtoul(optarg, &tmp, 0);
1883                         if (*tmp) {
1884                                 gr = getgrnam(optarg);
1885                                 if (gr == NULL)
1886                                         tmp = optarg;
1887                                 else {
1888                                         resgid = gr->gr_gid;
1889                                         *tmp = 0;
1890                                 }
1891                         }
1892                         if (*tmp) {
1893                                 com_err(program_name, 0,
1894                                         _("bad gid/group name - %s"),
1895                                         optarg);
1896                                 usage();
1897                         }
1898                         g_flag = 1;
1899                         open_flag = EXT2_FLAG_RW;
1900                         break;
1901                 case 'i':
1902                         interval = strtoul(optarg, &tmp, 0);
1903                         switch (*tmp) {
1904                         case 's':
1905                                 tmp++;
1906                                 break;
1907                         case '\0':
1908                         case 'd':
1909                         case 'D': /* days */
1910                                 interval *= 86400;
1911                                 if (*tmp != '\0')
1912                                         tmp++;
1913                                 break;
1914                         case 'm':
1915                         case 'M': /* months! */
1916                                 interval *= 86400 * 30;
1917                                 tmp++;
1918                                 break;
1919                         case 'w':
1920                         case 'W': /* weeks */
1921                                 interval *= 86400 * 7;
1922                                 tmp++;
1923                                 break;
1924                         }
1925                         if (*tmp) {
1926                                 com_err(program_name, 0,
1927                                         _("bad interval - %s"), optarg);
1928                                 usage();
1929                         }
1930                         i_flag = 1;
1931                         open_flag = EXT2_FLAG_RW;
1932                         break;
1933                 case 'j':
1934                         if (!journal_size)
1935                                 journal_size = -1;
1936                         open_flag = EXT2_FLAG_RW;
1937                         break;
1938                 case 'J':
1939                         parse_journal_opts(optarg);
1940                         open_flag = EXT2_FLAG_RW;
1941                         break;
1942                 case 'l':
1943                         l_flag = 1;
1944                         break;
1945                 case 'L':
1946                         new_label = optarg;
1947                         L_flag = 1;
1948                         open_flag |= EXT2_FLAG_RW |
1949                                 EXT2_FLAG_JOURNAL_DEV_OK;
1950                         break;
1951                 case 'm':
1952                         reserved_ratio = strtod(optarg, &tmp);
1953                         if (*tmp || reserved_ratio > 50 ||
1954                             reserved_ratio < 0) {
1955                                 com_err(program_name, 0,
1956                                         _("bad reserved block ratio - %s"),
1957                                         optarg);
1958                                 usage();
1959                         }
1960                         m_flag = 1;
1961                         open_flag = EXT2_FLAG_RW;
1962                         break;
1963                 case 'M':
1964                         new_last_mounted = optarg;
1965                         M_flag = 1;
1966                         open_flag = EXT2_FLAG_RW;
1967                         break;
1968                 case 'o':
1969                         if (mntopts_cmd) {
1970                                 com_err(program_name, 0, "%s",
1971                                         _("-o may only be specified once"));
1972                                 usage();
1973                         }
1974                         mntopts_cmd = optarg;
1975                         open_flag = EXT2_FLAG_RW;
1976                         break;
1977                 case 'O':
1978                         if (features_cmd) {
1979                                 com_err(program_name, 0, "%s",
1980                                         _("-O may only be specified once"));
1981                                 usage();
1982                         }
1983                         features_cmd = optarg;
1984                         open_flag = EXT2_FLAG_RW;
1985                         break;
1986                 case 'Q':
1987                         Q_flag = 1;
1988                         ret = parse_quota_opts(optarg, option_handle_function);
1989                         if (ret)
1990                                 exit(1);
1991                         open_flag = EXT2_FLAG_RW;
1992                         break;
1993                 case 'r':
1994                         reserved_blocks = strtoul(optarg, &tmp, 0);
1995                         if (*tmp) {
1996                                 com_err(program_name, 0,
1997                                         _("bad reserved blocks count - %s"),
1998                                         optarg);
1999                                 usage();
2000                         }
2001                         r_flag = 1;
2002                         open_flag = EXT2_FLAG_RW;
2003                         break;
2004                 case 's': /* Deprecated */
2005                         s_flag = atoi(optarg);
2006                         open_flag = EXT2_FLAG_RW;
2007                         break;
2008                 case 'T':
2009                         T_flag = 1;
2010                         last_check_time = parse_time(optarg);
2011                         open_flag = EXT2_FLAG_RW;
2012                         break;
2013                 case 'u':
2014                                 resuid = strtoul(optarg, &tmp, 0);
2015                                 if (*tmp) {
2016                                         pw = getpwnam(optarg);
2017                                         if (pw == NULL)
2018                                                 tmp = optarg;
2019                                         else {
2020                                                 resuid = pw->pw_uid;
2021                                                 *tmp = 0;
2022                                         }
2023                                 }
2024                                 if (*tmp) {
2025                                         com_err(program_name, 0,
2026                                                 _("bad uid/user name - %s"),
2027                                                 optarg);
2028                                         usage();
2029                                 }
2030                                 u_flag = 1;
2031                                 open_flag = EXT2_FLAG_RW;
2032                                 break;
2033                 case 'U':
2034                         new_UUID = optarg;
2035                         U_flag = 1;
2036                         open_flag = EXT2_FLAG_RW |
2037                                 EXT2_FLAG_JOURNAL_DEV_OK;
2038                         break;
2039                 case 'I':
2040                         new_inode_size = strtoul(optarg, &tmp, 0);
2041                         if (*tmp) {
2042                                 com_err(program_name, 0,
2043                                         _("bad inode size - %s"),
2044                                         optarg);
2045                                 usage();
2046                         }
2047                         if (!((new_inode_size &
2048                                (new_inode_size - 1)) == 0)) {
2049                                 com_err(program_name, 0,
2050                                         _("Inode size must be a "
2051                                           "power of two- %s"),
2052                                         optarg);
2053                                 usage();
2054                         }
2055                         open_flag = EXT2_FLAG_RW;
2056                         I_flag = 1;
2057                         break;
2058                 case 'z':
2059                         undo_file = optarg;
2060                         break;
2061                 default:
2062                         usage();
2063                 }
2064         if (optind < argc - 1 || optind == argc)
2065                 usage();
2066         if (!open_flag && !l_flag)
2067                 usage();
2068         io_options = strchr(argv[optind], '?');
2069         if (io_options)
2070                 *io_options++ = 0;
2071         device_name = blkid_get_devname(NULL, argv[optind], NULL);
2072         if (!device_name) {
2073                 com_err(program_name, 0, _("Unable to resolve '%s'"),
2074                         argv[optind]);
2075                 exit(1);
2076         }
2077 }
2078
2079 #ifdef CONFIG_BUILD_FINDFS
2080 void do_findfs(int argc, char **argv)
2081 {
2082         char    *dev;
2083
2084         if ((argc != 2) ||
2085             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2086                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2087                 exit(2);
2088         }
2089         dev = blkid_get_devname(NULL, argv[1], NULL);
2090         if (!dev) {
2091                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2092                         argv[1]);
2093                 exit(1);
2094         }
2095         puts(dev);
2096         exit(0);
2097 }
2098 #endif
2099
2100 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2101 {
2102         char    *buf, *token, *next, *p, *arg;
2103         int     len, hash_alg;
2104         int     r_usage = 0;
2105
2106         len = strlen(opts);
2107         buf = malloc(len+1);
2108         if (!buf) {
2109                 fprintf(stderr, "%s",
2110                         _("Couldn't allocate memory to parse options!\n"));
2111                 return 1;
2112         }
2113         strcpy(buf, opts);
2114         for (token = buf; token && *token; token = next) {
2115                 p = strchr(token, ',');
2116                 next = 0;
2117                 if (p) {
2118                         *p = 0;
2119                         next = p+1;
2120                 }
2121                 arg = strchr(token, '=');
2122                 if (arg) {
2123                         *arg = 0;
2124                         arg++;
2125                 }
2126                 if (strcmp(token, "clear-mmp") == 0 ||
2127                     strcmp(token, "clear_mmp") == 0) {
2128                         clear_mmp = 1;
2129                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2130                         unsigned long intv;
2131                         if (!arg) {
2132                                 r_usage++;
2133                                 continue;
2134                         }
2135                         intv = strtoul(arg, &p, 0);
2136                         if (*p) {
2137                                 fprintf(stderr,
2138                                         _("Invalid mmp_update_interval: %s\n"),
2139                                         arg);
2140                                 r_usage++;
2141                                 continue;
2142                         }
2143                         if (intv == 0) {
2144                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2145                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2146                                 fprintf(stderr,
2147                                         _("mmp_update_interval too big: %lu\n"),
2148                                         intv);
2149                                 r_usage++;
2150                                 continue;
2151                         }
2152                         printf(P_("Setting multiple mount protection update "
2153                                   "interval to %lu second\n",
2154                                   "Setting multiple mount protection update "
2155                                   "interval to %lu seconds\n", intv),
2156                                intv);
2157                         fs->super->s_mmp_update_interval = intv;
2158                         ext2fs_mark_super_dirty(fs);
2159                 } else if (!strcmp(token, "force_fsck")) {
2160                         fs->super->s_state |= EXT2_ERROR_FS;
2161                         printf(_("Setting filesystem error flag to force fsck.\n"));
2162                         ext2fs_mark_super_dirty(fs);
2163                 } else if (!strcmp(token, "test_fs")) {
2164                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2165                         printf("Setting test filesystem flag\n");
2166                         ext2fs_mark_super_dirty(fs);
2167                 } else if (!strcmp(token, "^test_fs")) {
2168                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2169                         printf("Clearing test filesystem flag\n");
2170                         ext2fs_mark_super_dirty(fs);
2171                 } else if (strcmp(token, "stride") == 0) {
2172                         if (!arg) {
2173                                 r_usage++;
2174                                 continue;
2175                         }
2176                         stride = strtoul(arg, &p, 0);
2177                         if (*p) {
2178                                 fprintf(stderr,
2179                                         _("Invalid RAID stride: %s\n"),
2180                                         arg);
2181                                 r_usage++;
2182                                 continue;
2183                         }
2184                         stride_set = 1;
2185                 } else if (strcmp(token, "stripe-width") == 0 ||
2186                            strcmp(token, "stripe_width") == 0) {
2187                         if (!arg) {
2188                                 r_usage++;
2189                                 continue;
2190                         }
2191                         stripe_width = strtoul(arg, &p, 0);
2192                         if (*p) {
2193                                 fprintf(stderr,
2194                                         _("Invalid RAID stripe-width: %s\n"),
2195                                         arg);
2196                                 r_usage++;
2197                                 continue;
2198                         }
2199                         stripe_width_set = 1;
2200                 } else if (strcmp(token, "hash_alg") == 0 ||
2201                            strcmp(token, "hash-alg") == 0) {
2202                         if (!arg) {
2203                                 r_usage++;
2204                                 continue;
2205                         }
2206                         hash_alg = e2p_string2hash(arg);
2207                         if (hash_alg < 0) {
2208                                 fprintf(stderr,
2209                                         _("Invalid hash algorithm: %s\n"),
2210                                         arg);
2211                                 r_usage++;
2212                                 continue;
2213                         }
2214                         fs->super->s_def_hash_version = hash_alg;
2215                         printf(_("Setting default hash algorithm "
2216                                  "to %s (%d)\n"),
2217                                arg, hash_alg);
2218                         ext2fs_mark_super_dirty(fs);
2219                 } else if (!strcmp(token, "mount_opts")) {
2220                         if (!arg) {
2221                                 r_usage++;
2222                                 continue;
2223                         }
2224                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2225                                 fprintf(stderr,
2226                                         "Extended mount options too long\n");
2227                                 continue;
2228                         }
2229                         ext_mount_opts = strdup(arg);
2230                 } else
2231                         r_usage++;
2232         }
2233         if (r_usage) {
2234                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2235                         "Extended options are separated by commas, "
2236                         "and may take an argument which\n"
2237                         "\tis set off by an equals ('=') sign.\n\n"
2238                         "Valid extended options are:\n"
2239                         "\tclear_mmp\n"
2240                         "\thash_alg=<hash algorithm>\n"
2241                         "\tmount_opts=<extended default mount options>\n"
2242                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2243                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2244                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2245                         "\tforce_fsck\n"
2246                         "\ttest_fs\n"
2247                         "\t^test_fs\n"));
2248                 free(buf);
2249                 return 1;
2250         }
2251         free(buf);
2252
2253         return 0;
2254 }
2255
2256 /*
2257  * Fill in the block bitmap bmap with the information regarding the
2258  * blocks to be moved
2259  */
2260 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2261                             ext2fs_block_bitmap bmap)
2262 {
2263         dgrp_t i;
2264         int retval;
2265         ext2_badblocks_list bb_list = 0;
2266         blk64_t j, needed_blocks = 0;
2267         blk64_t start_blk, end_blk;
2268
2269         retval = ext2fs_read_bb_inode(fs, &bb_list);
2270         if (retval)
2271                 return retval;
2272
2273         for (i = 0; i < fs->group_desc_count; i++) {
2274                 start_blk = ext2fs_inode_table_loc(fs, i) +
2275                                         fs->inode_blocks_per_group;
2276
2277                 end_blk = ext2fs_inode_table_loc(fs, i) +
2278                                         new_ino_blks_per_grp;
2279
2280                 for (j = start_blk; j < end_blk; j++) {
2281                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2282                                 /*
2283                                  * IF the block is a bad block we fail
2284                                  */
2285                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2286                                         ext2fs_badblocks_list_free(bb_list);
2287                                         return ENOSPC;
2288                                 }
2289
2290                                 ext2fs_mark_block_bitmap2(bmap, j);
2291                         } else {
2292                                 /*
2293                                  * We are going to use this block for
2294                                  * inode table. So mark them used.
2295                                  */
2296                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2297                         }
2298                 }
2299                 needed_blocks += end_blk - start_blk;
2300         }
2301
2302         ext2fs_badblocks_list_free(bb_list);
2303         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2304                 return ENOSPC;
2305
2306         return 0;
2307 }
2308
2309 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2310 {
2311         dgrp_t group;
2312         group = ext2fs_group_of_blk2(fs, blk);
2313         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2314                 return 1;
2315         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2316                 return 1;
2317         return 0;
2318 }
2319
2320 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2321 {
2322         blk64_t start_blk, end_blk;
2323         start_blk = fs->super->s_first_data_block +
2324                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2325         /*
2326          * We cannot get new block beyond end_blk for for the last block group
2327          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2328          */
2329         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2330         if (blk >= start_blk && blk <= end_blk)
2331                 return 1;
2332         return 0;
2333 }
2334
2335 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2336 {
2337
2338         char *buf;
2339         dgrp_t group = 0;
2340         errcode_t retval;
2341         int meta_data = 0;
2342         blk64_t blk, new_blk, goal;
2343         struct blk_move *bmv;
2344
2345         retval = ext2fs_get_mem(fs->blocksize, &buf);
2346         if (retval)
2347                 return retval;
2348
2349         for (new_blk = blk = fs->super->s_first_data_block;
2350              blk < ext2fs_blocks_count(fs->super); blk++) {
2351                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2352                         continue;
2353
2354                 if (ext2fs_is_meta_block(fs, blk)) {
2355                         /*
2356                          * If the block is mapping a fs meta data block
2357                          * like group desc/block bitmap/inode bitmap. We
2358                          * should find a block in the same group and fix
2359                          * the respective fs metadata pointers. Otherwise
2360                          * fail
2361                          */
2362                         group = ext2fs_group_of_blk2(fs, blk);
2363                         goal = ext2fs_group_first_block2(fs, group);
2364                         meta_data = 1;
2365
2366                 } else {
2367                         goal = new_blk;
2368                 }
2369                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2370                 if (retval)
2371                         goto err_out;
2372
2373                 /* new fs meta data block should be in the same group */
2374                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2375                         retval = ENOSPC;
2376                         goto err_out;
2377                 }
2378
2379                 /* Mark this block as allocated */
2380                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2381
2382                 /* Add it to block move list */
2383                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2384                 if (retval)
2385                         goto err_out;
2386
2387                 bmv->old_loc = blk;
2388                 bmv->new_loc = new_blk;
2389
2390                 list_add(&(bmv->list), &blk_move_list);
2391
2392                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2393                 if (retval)
2394                         goto err_out;
2395
2396                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2397                 if (retval)
2398                         goto err_out;
2399         }
2400
2401 err_out:
2402         ext2fs_free_mem(&buf);
2403         return retval;
2404 }
2405
2406 static blk64_t translate_block(blk64_t blk)
2407 {
2408         struct list_head *entry;
2409         struct blk_move *bmv;
2410
2411         list_for_each(entry, &blk_move_list) {
2412                 bmv = list_entry(entry, struct blk_move, list);
2413                 if (bmv->old_loc == blk)
2414                         return bmv->new_loc;
2415         }
2416
2417         return 0;
2418 }
2419
2420 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2421                          blk64_t *block_nr,
2422                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2423                          blk64_t ref_block EXT2FS_ATTR((unused)),
2424                          int ref_offset EXT2FS_ATTR((unused)),
2425                          void *priv_data)
2426 {
2427         int ret = 0;
2428         blk64_t new_blk;
2429         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2430
2431         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2432                 return 0;
2433         new_blk = translate_block(*block_nr);
2434         if (new_blk) {
2435                 *block_nr = new_blk;
2436                 /*
2437                  * This will force the ext2fs_write_inode in the iterator
2438                  */
2439                 ret |= BLOCK_CHANGED;
2440         }
2441
2442         return ret;
2443 }
2444
2445 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2446 {
2447         errcode_t retval = 0;
2448         ext2_ino_t ino;
2449         blk64_t blk;
2450         char *block_buf = 0;
2451         struct ext2_inode inode;
2452         ext2_inode_scan scan = NULL;
2453
2454         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2455         if (retval)
2456                 return retval;
2457
2458         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2459         if (retval)
2460                 goto err_out;
2461
2462         while (1) {
2463                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2464                 if (retval)
2465                         goto err_out;
2466
2467                 if (!ino)
2468                         break;
2469
2470                 if (inode.i_links_count == 0)
2471                         continue; /* inode not in use */
2472
2473                 /* FIXME!!
2474                  * If we end up modifying the journal inode
2475                  * the sb->s_jnl_blocks will differ. But a
2476                  * subsequent e2fsck fixes that.
2477                  * Do we need to fix this ??
2478                  */
2479
2480                 if (ext2fs_file_acl_block(fs, &inode) &&
2481                     ext2fs_test_block_bitmap2(bmap,
2482                                         ext2fs_file_acl_block(fs, &inode))) {
2483                         blk = translate_block(ext2fs_file_acl_block(fs,
2484                                                                     &inode));
2485                         if (!blk)
2486                                 continue;
2487
2488                         ext2fs_file_acl_block_set(fs, &inode, blk);
2489
2490                         /*
2491                          * Write the inode to disk so that inode table
2492                          * resizing can work
2493                          */
2494                         retval = ext2fs_write_inode(fs, ino, &inode);
2495                         if (retval)
2496                                 goto err_out;
2497                 }
2498
2499                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2500                         continue;
2501
2502                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2503                                                process_block, bmap);
2504                 if (retval)
2505                         goto err_out;
2506
2507         }
2508
2509 err_out:
2510         ext2fs_free_mem(&block_buf);
2511         ext2fs_close_inode_scan(scan);
2512
2513         return retval;
2514 }
2515
2516 /*
2517  * We need to scan for inode and block bitmaps that may need to be
2518  * moved.  This can take place if the filesystem was formatted for
2519  * RAID arrays using the mke2fs's extended option "stride".
2520  */
2521 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2522 {
2523         dgrp_t i;
2524         blk64_t blk, new_blk;
2525
2526         for (i = 0; i < fs->group_desc_count; i++) {
2527                 blk = ext2fs_block_bitmap_loc(fs, i);
2528                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2529                         new_blk = translate_block(blk);
2530                         if (!new_blk)
2531                                 continue;
2532                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2533                 }
2534
2535                 blk = ext2fs_inode_bitmap_loc(fs, i);
2536                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2537                         new_blk = translate_block(blk);
2538                         if (!new_blk)
2539                                 continue;
2540                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2541                 }
2542         }
2543         return 0;
2544 }
2545
2546 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2547 {
2548         dgrp_t i;
2549         blk64_t blk;
2550         errcode_t retval;
2551         int new_ino_blks_per_grp;
2552         unsigned int j;
2553         char *old_itable = NULL, *new_itable = NULL;
2554         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2555         unsigned long old_ino_size;
2556         int old_itable_size, new_itable_size;
2557
2558         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2559         old_ino_size = EXT2_INODE_SIZE(fs->super);
2560
2561         new_ino_blks_per_grp = ext2fs_div_ceil(
2562                                         EXT2_INODES_PER_GROUP(fs->super) *
2563                                         new_ino_size,
2564                                         fs->blocksize);
2565
2566         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2567
2568         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2569         if (retval)
2570                 return retval;
2571
2572         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2573         if (retval)
2574                 goto err_out;
2575
2576         tmp_old_itable = old_itable;
2577         tmp_new_itable = new_itable;
2578
2579         for (i = 0; i < fs->group_desc_count; i++) {
2580                 blk = ext2fs_inode_table_loc(fs, i);
2581                 retval = io_channel_read_blk64(fs->io, blk,
2582                                 fs->inode_blocks_per_group, old_itable);
2583                 if (retval)
2584                         goto err_out;
2585
2586                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2587                         memcpy(new_itable, old_itable, old_ino_size);
2588
2589                         memset(new_itable+old_ino_size, 0,
2590                                         new_ino_size - old_ino_size);
2591
2592                         new_itable += new_ino_size;
2593                         old_itable += old_ino_size;
2594                 }
2595
2596                 /* reset the pointer */
2597                 old_itable = tmp_old_itable;
2598                 new_itable = tmp_new_itable;
2599
2600                 retval = io_channel_write_blk64(fs->io, blk,
2601                                         new_ino_blks_per_grp, new_itable);
2602                 if (retval)
2603                         goto err_out;
2604         }
2605
2606         /* Update the meta data */
2607         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2608         ext2fs_free_inode_cache(fs->icache);
2609         fs->icache = 0;
2610         fs->super->s_inode_size = new_ino_size;
2611
2612 err_out:
2613         if (old_itable)
2614                 ext2fs_free_mem(&old_itable);
2615
2616         if (new_itable)
2617                 ext2fs_free_mem(&new_itable);
2618
2619         return retval;
2620 }
2621
2622
2623 #define list_for_each_safe(pos, pnext, head) \
2624         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2625              pos = pnext, pnext = pos->next)
2626
2627 static void free_blk_move_list(void)
2628 {
2629         struct list_head *entry, *tmp;
2630         struct blk_move *bmv;
2631
2632         list_for_each_safe(entry, tmp, &blk_move_list) {
2633                 bmv = list_entry(entry, struct blk_move, list);
2634                 list_del(entry);
2635                 ext2fs_free_mem(&bmv);
2636         }
2637         return;
2638 }
2639
2640 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2641 {
2642         errcode_t retval;
2643         int new_ino_blks_per_grp;
2644         ext2fs_block_bitmap bmap;
2645
2646         retval = ext2fs_read_inode_bitmap(fs);
2647         if (retval) {
2648                 fputs(_("Failed to read inode bitmap\n"), stderr);
2649                 return retval;
2650         }
2651         retval = ext2fs_read_block_bitmap(fs);
2652         if (retval) {
2653                 fputs(_("Failed to read block bitmap\n"), stderr);
2654                 return retval;
2655         }
2656         INIT_LIST_HEAD(&blk_move_list);
2657
2658
2659         new_ino_blks_per_grp = ext2fs_div_ceil(
2660                                         EXT2_INODES_PER_GROUP(fs->super)*
2661                                         new_size,
2662                                         fs->blocksize);
2663
2664         /* We may change the file system.
2665          * Mark the file system as invalid so that
2666          * the user is prompted to run fsck.
2667          */
2668         fs->super->s_state &= ~EXT2_VALID_FS;
2669
2670         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2671                                                 &bmap);
2672         if (retval) {
2673                 fputs(_("Failed to allocate block bitmap when "
2674                                 "increasing inode size\n"), stderr);
2675                 return retval;
2676         }
2677         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2678         if (retval) {
2679                 fputs(_("Not enough space to increase inode size \n"), stderr);
2680                 goto err_out;
2681         }
2682         retval = move_block(fs, bmap);
2683         if (retval) {
2684                 fputs(_("Failed to relocate blocks during inode resize \n"),
2685                       stderr);
2686                 goto err_out;
2687         }
2688         retval = inode_scan_and_fix(fs, bmap);
2689         if (retval)
2690                 goto err_out_undo;
2691
2692         retval = group_desc_scan_and_fix(fs, bmap);
2693         if (retval)
2694                 goto err_out_undo;
2695
2696         retval = expand_inode_table(fs, new_size);
2697         if (retval)
2698                 goto err_out_undo;
2699
2700         ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2701
2702         fs->super->s_state |= EXT2_VALID_FS;
2703         /* mark super block and block bitmap as dirty */
2704         ext2fs_mark_super_dirty(fs);
2705         ext2fs_mark_bb_dirty(fs);
2706
2707 err_out:
2708         free_blk_move_list();
2709         ext2fs_free_block_bitmap(bmap);
2710
2711         return retval;
2712
2713 err_out_undo:
2714         free_blk_move_list();
2715         ext2fs_free_block_bitmap(bmap);
2716         fputs(_("Error in resizing the inode size.\n"
2717                         "Run e2undo to undo the "
2718                         "file system changes. \n"), stderr);
2719
2720         return retval;
2721 }
2722
2723 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2724 {
2725         errcode_t retval = 0;
2726         const char *tdb_dir;
2727         char *tdb_file = NULL;
2728         char *dev_name, *tmp_name;
2729
2730         /* (re)open a specific undo file */
2731         if (undo_file && undo_file[0] != 0) {
2732                 retval = set_undo_io_backing_manager(*io_ptr);
2733                 if (retval)
2734                         goto err;
2735                 *io_ptr = undo_io_manager;
2736                 retval = set_undo_io_backup_file(undo_file);
2737                 if (retval)
2738                         goto err;
2739                 printf(_("Overwriting existing filesystem; this can be undone "
2740                          "using the command:\n"
2741                          "    e2undo %s %s\n\n"),
2742                          undo_file, name);
2743                 return retval;
2744         }
2745
2746         /*
2747          * Configuration via a conf file would be
2748          * nice
2749          */
2750         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2751         if (!tdb_dir)
2752                 tdb_dir = "/var/lib/e2fsprogs";
2753
2754         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2755             access(tdb_dir, W_OK))
2756                 return 0;
2757
2758         tmp_name = strdup(name);
2759         if (!tmp_name)
2760                 goto errout;
2761         dev_name = basename(tmp_name);
2762         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2763         if (!tdb_file) {
2764                 free(tmp_name);
2765                 goto errout;
2766         }
2767         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2768         free(tmp_name);
2769
2770         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2771                 retval = errno;
2772                 com_err(program_name, retval,
2773                         _("while trying to delete %s"), tdb_file);
2774                 goto errout;
2775         }
2776
2777         retval = set_undo_io_backing_manager(*io_ptr);
2778         if (retval)
2779                 goto errout;
2780         *io_ptr = undo_io_manager;
2781         retval = set_undo_io_backup_file(tdb_file);
2782         if (retval)
2783                 goto errout;
2784         printf(_("Overwriting existing filesystem; this can be undone "
2785                  "using the command:\n"
2786                  "    e2undo %s %s\n\n"),
2787                  tdb_file, name);
2788
2789         free(tdb_file);
2790         return 0;
2791 errout:
2792         free(tdb_file);
2793 err:
2794         com_err("tune2fs", retval, "while trying to setup undo file\n");
2795         return retval;
2796 }
2797
2798 static int
2799 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2800 {
2801         int retval, nr_users, start;
2802         journal_superblock_t *jsb;
2803         ext2_filsys jfs;
2804         __u8 *j_uuid;
2805         char *journal_path;
2806         char uuid[UUID_STR_SIZE];
2807         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2808
2809         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2810                 return 0;
2811
2812         uuid_unparse(sb->s_journal_uuid, uuid);
2813         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2814         if (!journal_path)
2815                 return 0;
2816
2817         retval = ext2fs_open2(journal_path, io_options,
2818                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2819                               0, 0, unix_io_manager, &jfs);
2820         if (retval) {
2821                 com_err(program_name, retval,
2822                         _("while trying to open %s"),
2823                         journal_path);
2824                 return retval;
2825         }
2826
2827         retval = get_journal_sb(jfs, buf);
2828         if (retval != 0) {
2829                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2830                         fprintf(stderr, _("%s is not a journal device.\n"),
2831                                 journal_path);
2832                 return retval;
2833         }
2834
2835         jsb = (journal_superblock_t *) buf;
2836         /* Find the filesystem UUID */
2837         nr_users = ntohl(jsb->s_nr_users);
2838         if (nr_users > JBD2_USERS_MAX) {
2839                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2840                                  "is too high (%d).\n"), nr_users);
2841                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2842         }
2843
2844         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2845         if (j_uuid == NULL) {
2846                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2847                       stderr);
2848                 return EXT2_ET_LOAD_EXT_JOURNAL;
2849         }
2850
2851         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2852
2853         start = ext2fs_journal_sb_start(jfs->blocksize);
2854         /* Write back the journal superblock */
2855         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2856         if (retval != 0) {
2857                 com_err(program_name, retval,
2858                         "while writing journal superblock.");
2859                 return retval;
2860         }
2861
2862         ext2fs_close(jfs);
2863
2864         return 0;
2865 }
2866
2867 #ifndef BUILD_AS_LIB
2868 int main(int argc, char **argv)
2869 #else
2870 int tune2fs_main(int argc, char **argv)
2871 #endif  /* BUILD_AS_LIB */
2872 {
2873         errcode_t retval;
2874         ext2_filsys fs;
2875         struct ext2_super_block *sb;
2876         io_manager io_ptr, io_ptr_orig = NULL;
2877         int rc = 0;
2878         char default_undo_file[1] = { 0 };
2879
2880 #ifdef ENABLE_NLS
2881         setlocale(LC_MESSAGES, "");
2882         setlocale(LC_CTYPE, "");
2883         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2884         textdomain(NLS_CAT_NAME);
2885         set_com_err_gettext(gettext);
2886 #endif
2887         if (argc && *argv)
2888                 program_name = *argv;
2889         add_error_table(&et_ext2_error_table);
2890
2891 #ifdef CONFIG_BUILD_FINDFS
2892         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2893                 do_findfs(argc, argv);
2894 #endif
2895         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2896                 parse_e2label_options(argc, argv);
2897         else
2898                 parse_tune2fs_options(argc, argv);
2899
2900 #ifdef CONFIG_TESTIO_DEBUG
2901         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2902                 io_ptr = test_io_manager;
2903                 test_io_backing_manager = unix_io_manager;
2904         } else
2905 #endif
2906                 io_ptr = unix_io_manager;
2907
2908 retry_open:
2909         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2910                 open_flag |= EXT2_FLAG_SKIP_MMP;
2911
2912         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
2913                 EXT2_FLAG_JOURNAL_DEV_OK;
2914
2915         /* keep the filesystem struct around to dump MMP data */
2916         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2917
2918         retval = ext2fs_open2(device_name, io_options, open_flag,
2919                               0, 0, io_ptr, &fs);
2920         if (retval) {
2921                 com_err(program_name, retval,
2922                         _("while trying to open %s"),
2923                         device_name);
2924                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2925                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2926                         dump_mmp_msg(fs->mmp_buf,
2927                                      _("If you are sure the filesystem "
2928                                        "is not in use on any node, run:\n"
2929                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2930                 else if (retval == EXT2_ET_MMP_FAILED)
2931                         dump_mmp_msg(fs->mmp_buf, NULL);
2932                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2933                         fprintf(stderr,
2934                                 _("MMP block magic is bad. Try to fix it by "
2935                                   "running:\n'e2fsck -f %s'\n"), device_name);
2936                 else if (retval == EXT2_ET_BAD_MAGIC)
2937                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2938                 else if (retval != EXT2_ET_MMP_FAILED)
2939                         fprintf(stderr, "%s",
2940                              _("Couldn't find valid filesystem superblock.\n"));
2941
2942                 ext2fs_free(fs);
2943                 exit(1);
2944         }
2945         if (ext2fs_has_feature_journal_dev(fs->super)) {
2946                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2947                 ext2fs_free(fs);
2948                 exit(1);
2949         }
2950         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2951
2952         if (I_flag) {
2953                 /*
2954                  * Check the inode size is right so we can issue an
2955                  * error message and bail before setting up the tdb
2956                  * file.
2957                  */
2958                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2959                         fprintf(stderr, _("The inode size is already %lu\n"),
2960                                 new_inode_size);
2961                         rc = 1;
2962                         goto closefs;
2963                 }
2964                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2965                         fprintf(stderr, "%s",
2966                                 _("Shrinking inode size is not supported\n"));
2967                         rc = 1;
2968                         goto closefs;
2969                 }
2970                 if (new_inode_size > fs->blocksize) {
2971                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2972                                 new_inode_size, fs->blocksize);
2973                         rc = 1;
2974                         goto closefs;
2975                 }
2976                 rc = check_fsck_needed(fs,
2977                         _("Resizing inodes could take some time."));
2978                 if (rc)
2979                         goto closefs;
2980                 /*
2981                  * If inode resize is requested use the
2982                  * Undo I/O manager
2983                  */
2984                 undo_file = default_undo_file;
2985         }
2986
2987         /* Set up an undo file */
2988         if (undo_file && io_ptr_orig == NULL) {
2989                 io_ptr_orig = io_ptr;
2990                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2991                 if (retval) {
2992                         rc = 1;
2993                         goto closefs;
2994                 }
2995                 if (io_ptr != io_ptr_orig) {
2996                         ext2fs_close_free(&fs);
2997                         goto retry_open;
2998                 }
2999         }
3000
3001         sb = fs->super;
3002         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3003
3004         if (print_label) {
3005                 /* For e2label emulation */
3006                 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3007                 remove_error_table(&et_ext2_error_table);
3008                 goto closefs;
3009         }
3010
3011         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3012         if (retval) {
3013                 com_err("ext2fs_check_if_mount", retval,
3014                         _("while determining whether %s is mounted."),
3015                         device_name);
3016                 rc = 1;
3017                 goto closefs;
3018         }
3019
3020 #ifdef NO_RECOVERY
3021         /* Warn if file system needs recovery and it is opened for writing. */
3022         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3023             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3024             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3025                 fprintf(stderr,
3026 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3027   "\te2fsck -E journal_only %s\n\n"
3028   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3029   "by journal recovery.\n"), device_name);
3030         }
3031 #else
3032         /* Recover the journal if possible. */
3033         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3034             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3035                 printf(_("Recovering journal.\n"));
3036                 retval = ext2fs_run_ext3_journal(&fs);
3037                 if (retval) {
3038                         com_err("tune2fs", retval,
3039                                 "while recovering journal.\n");
3040                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3041                         if (fs)
3042                                 ext2fs_close_free(&fs);
3043                         rc = 1;
3044                         goto closefs;
3045                 }
3046                 sb = fs->super;
3047         }
3048 #endif
3049
3050         /* Normally we only need to write out the superblock */
3051         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3052
3053         if (c_flag) {
3054                 sb->s_max_mnt_count = max_mount_count;
3055                 ext2fs_mark_super_dirty(fs);
3056                 printf(_("Setting maximal mount count to %d\n"),
3057                        max_mount_count);
3058         }
3059         if (C_flag) {
3060                 sb->s_mnt_count = mount_count;
3061                 ext2fs_mark_super_dirty(fs);
3062                 printf(_("Setting current mount count to %d\n"), mount_count);
3063         }
3064         if (e_flag) {
3065                 sb->s_errors = errors;
3066                 ext2fs_mark_super_dirty(fs);
3067                 printf(_("Setting error behavior to %d\n"), errors);
3068         }
3069         if (g_flag) {
3070                 sb->s_def_resgid = resgid;
3071                 ext2fs_mark_super_dirty(fs);
3072                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3073         }
3074         if (i_flag) {
3075                 if ((unsigned long long)interval >= (1ULL << 32)) {
3076                         com_err(program_name, 0,
3077                                 _("interval between checks is too big (%lu)"),
3078                                 interval);
3079                         rc = 1;
3080                         goto closefs;
3081                 }
3082                 sb->s_checkinterval = interval;
3083                 ext2fs_mark_super_dirty(fs);
3084                 printf(_("Setting interval between checks to %lu seconds\n"),
3085                        interval);
3086         }
3087         if (m_flag) {
3088                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3089                                           ext2fs_blocks_count(sb) / 100.0);
3090                 ext2fs_mark_super_dirty(fs);
3091                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3092                         reserved_ratio, ext2fs_r_blocks_count(sb));
3093         }
3094         if (r_flag) {
3095                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3096                         com_err(program_name, 0,
3097                                 _("reserved blocks count is too big (%llu)"),
3098                                 reserved_blocks);
3099                         rc = 1;
3100                         goto closefs;
3101                 }
3102                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3103                 ext2fs_mark_super_dirty(fs);
3104                 printf(_("Setting reserved blocks count to %llu\n"),
3105                        reserved_blocks);
3106         }
3107         if (s_flag == 1) {
3108                 if (ext2fs_has_feature_sparse_super(sb)) {
3109                         fputs(_("\nThe filesystem already has sparse "
3110                                 "superblocks.\n"), stderr);
3111                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3112                         fputs(_("\nSetting the sparse superblock flag not "
3113                                 "supported\nfor filesystems with "
3114                                 "the meta_bg feature enabled.\n"),
3115                                 stderr);
3116                         rc = 1;
3117                         goto closefs;
3118                 } else {
3119                         ext2fs_set_feature_sparse_super(sb);
3120                         sb->s_state &= ~EXT2_VALID_FS;
3121                         ext2fs_mark_super_dirty(fs);
3122                         printf(_("\nSparse superblock flag set.  %s"),
3123                                _(please_fsck));
3124                 }
3125         }
3126         if (s_flag == 0) {
3127                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3128                       stderr);
3129                 rc = 1;
3130                 goto closefs;
3131         }
3132         if (T_flag) {
3133                 sb->s_lastcheck = last_check_time;
3134                 ext2fs_mark_super_dirty(fs);
3135                 printf(_("Setting time filesystem last checked to %s\n"),
3136                        ctime(&last_check_time));
3137         }
3138         if (u_flag) {
3139                 sb->s_def_resuid = resuid;
3140                 ext2fs_mark_super_dirty(fs);
3141                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3142         }
3143         if (L_flag) {
3144                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3145                         fputs(_("Warning: label too long, truncating.\n"),
3146                               stderr);
3147                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3148                 strncpy((char *)sb->s_volume_name, new_label,
3149                         sizeof(sb->s_volume_name));
3150                 ext2fs_mark_super_dirty(fs);
3151         }
3152         if (M_flag) {
3153                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3154                 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3155                         sizeof(sb->s_last_mounted));
3156                 ext2fs_mark_super_dirty(fs);
3157         }
3158         if (mntopts_cmd) {
3159                 rc = update_mntopts(fs, mntopts_cmd);
3160                 if (rc)
3161                         goto closefs;
3162         }
3163         if (features_cmd) {
3164                 rc = update_feature_set(fs, features_cmd);
3165                 if (rc)
3166                         goto closefs;
3167         }
3168         if (extended_cmd) {
3169                 rc = parse_extended_opts(fs, extended_cmd);
3170                 if (rc)
3171                         goto closefs;
3172                 if (clear_mmp && !f_flag) {
3173                         fputs(_("Error in using clear_mmp. "
3174                                 "It must be used with -f\n"),
3175                               stderr);
3176                         goto closefs;
3177                 }
3178         }
3179         if (clear_mmp) {
3180                 rc = ext2fs_mmp_clear(fs);
3181                 goto closefs;
3182         }
3183         if (journal_size || journal_device) {
3184                 rc = add_journal(fs);
3185                 if (rc)
3186                         goto closefs;
3187         }
3188
3189         if (Q_flag) {
3190                 if (mount_flags & EXT2_MF_MOUNTED) {
3191                         fputs(_("The quota feature may only be changed when "
3192                                 "the filesystem is unmounted.\n"), stderr);
3193                         rc = 1;
3194                         goto closefs;
3195                 }
3196                 rc = handle_quota_options(fs);
3197                 if (rc)
3198                         goto closefs;
3199         }
3200
3201         if (U_flag) {
3202                 int set_csum = 0;
3203                 dgrp_t i;
3204                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3205                 __u8 old_uuid[UUID_SIZE];
3206
3207                 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3208                         fputs(_("Cannot change the UUID of this filesystem "
3209                                 "because it has the stable_inodes feature "
3210                                 "flag.\n"), stderr);
3211                         exit(1);
3212                 }
3213
3214                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3215                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3216                      ext2fs_has_feature_ea_inode(fs->super))) {
3217                         rc = check_fsck_needed(fs,
3218                                 _("Setting the UUID on this "
3219                                   "filesystem could take some time."));
3220                         if (rc)
3221                                 goto closefs;
3222                         rewrite_checksums = REWRITE_ALL;
3223                 }
3224
3225                 if (ext2fs_has_group_desc_csum(fs)) {
3226                         /*
3227                          * Changing the UUID on a metadata_csum FS requires
3228                          * rewriting all metadata, which can race with a
3229                          * mounted fs.  Don't allow that unless we're saving
3230                          * the checksum seed.
3231                          */
3232                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3233                             !ext2fs_has_feature_csum_seed(fs->super) &&
3234                             ext2fs_has_feature_metadata_csum(fs->super)) {
3235                                 fputs(_("The UUID may only be "
3236                                         "changed when the filesystem is "
3237                                         "unmounted.\n"), stderr);
3238                                 fputs(_("If you only use kernels newer than "
3239                                         "v4.4, run 'tune2fs -O "
3240                                         "metadata_csum_seed' and re-run this "
3241                                         "command.\n"), stderr);
3242                                 try_confirm_csum_seed_support();
3243                                 rc = 1;
3244                                 goto closefs;
3245                         }
3246
3247                         /*
3248                          * Determine if the block group checksums are
3249                          * correct so we know whether or not to set
3250                          * them later on.
3251                          */
3252                         for (i = 0; i < fs->group_desc_count; i++)
3253                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3254                                         break;
3255                         if (i >= fs->group_desc_count)
3256                                 set_csum = 1;
3257                 }
3258
3259                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3260                 if ((strcasecmp(new_UUID, "null") == 0) ||
3261                     (strcasecmp(new_UUID, "clear") == 0)) {
3262                         uuid_clear(sb->s_uuid);
3263                 } else if (strcasecmp(new_UUID, "time") == 0) {
3264                         uuid_generate_time(sb->s_uuid);
3265                 } else if (strcasecmp(new_UUID, "random") == 0) {
3266                         uuid_generate(sb->s_uuid);
3267                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3268                         com_err(program_name, 0, "%s",
3269                                 _("Invalid UUID format\n"));
3270                         rc = 1;
3271                         goto closefs;
3272                 }
3273                 ext2fs_init_csum_seed(fs);
3274                 if (set_csum) {
3275                         for (i = 0; i < fs->group_desc_count; i++)
3276                                 ext2fs_group_desc_csum_set(fs, i);
3277                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3278                 }
3279
3280                 /* If this is a journal dev, we need to copy UUID into jsb */
3281                 if (!(rc = get_journal_sb(fs, buf))) {
3282                         journal_superblock_t *jsb;
3283
3284                         jsb = (journal_superblock_t *) buf;
3285                         fputs(_("Need to update journal superblock.\n"), stdout);
3286                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3287
3288                         /* Writeback the journal superblock */
3289                         if ((rc = io_channel_write_blk64(fs->io,
3290                                 ext2fs_journal_sb_start(fs->blocksize),
3291                                         -SUPERBLOCK_SIZE, buf)))
3292                                 goto closefs;
3293                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3294                         goto closefs;
3295                 else {
3296                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3297
3298                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3299                                 goto closefs;
3300                 }
3301
3302                 ext2fs_mark_super_dirty(fs);
3303         }
3304
3305         if (I_flag) {
3306                 if (mount_flags & EXT2_MF_MOUNTED) {
3307                         fputs(_("The inode size may only be "
3308                                 "changed when the filesystem is "
3309                                 "unmounted.\n"), stderr);
3310                         rc = 1;
3311                         goto closefs;
3312                 }
3313                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3314                         fputs(_("Changing the inode size not supported for "
3315                                 "filesystems with the flex_bg\n"
3316                                 "feature enabled.\n"),
3317                               stderr);
3318                         rc = 1;
3319                         goto closefs;
3320                 }
3321                 /*
3322                  * We want to update group descriptor also
3323                  * with the new free inode count
3324                  */
3325                 if (rewrite_checksums)
3326                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3327                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3328                 retval = resize_inode(fs, new_inode_size);
3329                 if (rewrite_checksums)
3330                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3331                 if (retval == 0) {
3332                         printf(_("Setting inode size %lu\n"),
3333                                                         new_inode_size);
3334                         rewrite_checksums = REWRITE_ALL;
3335                 } else {
3336                         printf("%s", _("Failed to change inode size\n"));
3337                         rc = 1;
3338                         goto closefs;
3339                 }
3340         }
3341
3342         if (rewrite_checksums)
3343                 rewrite_metadata_checksums(fs, rewrite_checksums);
3344
3345         if (l_flag)
3346                 list_super(sb);
3347         if (stride_set) {
3348                 sb->s_raid_stride = stride;
3349                 ext2fs_mark_super_dirty(fs);
3350                 printf(_("Setting stride size to %d\n"), stride);
3351         }
3352         if (stripe_width_set) {
3353                 sb->s_raid_stripe_width = stripe_width;
3354                 ext2fs_mark_super_dirty(fs);
3355                 printf(_("Setting stripe width to %d\n"), stripe_width);
3356         }
3357         if (ext_mount_opts) {
3358                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3359                         sizeof(fs->super->s_mount_opts));
3360                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3361                 ext2fs_mark_super_dirty(fs);
3362                 printf(_("Setting extended default mount options to '%s'\n"),
3363                        ext_mount_opts);
3364                 free(ext_mount_opts);
3365         }
3366
3367         free(device_name);
3368         remove_error_table(&et_ext2_error_table);
3369
3370 closefs:
3371         if (rc) {
3372                 ext2fs_mmp_stop(fs);
3373 #ifndef BUILD_AS_LIB
3374                 exit(1);
3375 #endif
3376         }
3377
3378         if (feature_64bit)
3379                 convert_64bit(fs, feature_64bit);
3380         return (ext2fs_close_free(&fs) ? 1 : 0);
3381 }