misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #include "config.h"
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #ifdef HAVE_STRINGS_H
  44 #include <strings.h>    /* for strcasecmp() */
  45 #else
  46 #define _BSD_SOURCE     /* for inclusion of strcasecmp() via <string.h> */
  47 #define _DEFAULT_SOURCE   /* since glibc 2.20 _BSD_SOURCE is deprecated */
  48 #endif
  49 #include <string.h>
  50 #include <time.h>
  51 #include <unistd.h>
  52 #include <sys/types.h>
  53 #include <libgen.h>
  54 #include <limits.h>
  55
  56 #include "ext2fs/ext2_fs.h"
  57 #include "ext2fs/ext2fs.h"
  58 #include "ext2fs/kernel-jbd.h"
  59 #include "et/com_err.h"
  60 #include "support/plausible.h"
  61 #include "support/quotaio.h"
  62 #include "uuid/uuid.h"
  63 #include "e2p/e2p.h"
  64 #include "util.h"
  65 #include "blkid/blkid.h"
  66
  67 #include "../version.h"
  68 #include "support/nls-enable.h"
  69
  70 #define QOPT_ENABLE     (1)
  71 #define QOPT_DISABLE    (-1)
  72
  73 extern int ask_yn(const char *string, int def);
  74
  75 const char *program_name = "tune2fs";
  76 char *device_name;
  77 char *new_label, *new_last_mounted, *new_UUID;
  78 char *io_options;
  79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  81 static int I_flag;
  82 static int clear_mmp;
  83 static time_t last_check_time;
  84 static int print_label;
  85 static int max_mount_count, mount_count, mount_flags;
  86 static unsigned long interval;
  87 static blk64_t reserved_blocks;
  88 static double reserved_ratio;
  89 static unsigned long resgid, resuid;
  90 static unsigned short errors;
  91 static int open_flag;
  92 static char *features_cmd;
  93 static char *mntopts_cmd;
  94 static int stride, stripe_width;
  95 static int stride_set, stripe_width_set;
  96 static char *extended_cmd;
  97 static unsigned long new_inode_size;
  98 static char *ext_mount_opts;
  99 static int quota_enable[MAXQUOTAS];
 100 static int rewrite_checksums;
 101 static int feature_64bit;
 102 static int fsck_requested;
 103 static char *undo_file;
 104
 105 int journal_size, journal_flags;
 106 char *journal_device;
 107 static blk64_t journal_location = ~0LL;
 108
 109 static struct list_head blk_move_list;
 110
 111 struct blk_move {
 112         struct list_head list;
 113         blk64_t old_loc;
 114         blk64_t new_loc;
 115 };
 116
 117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
 118
 119 static const char *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         /* Incompat */
 154         EXT2_FEATURE_INCOMPAT_FILETYPE |
 155                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 156                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 157                 EXT4_FEATURE_INCOMPAT_EA_INODE|
 158                 EXT4_FEATURE_INCOMPAT_MMP |
 159                 EXT4_FEATURE_INCOMPAT_64BIT |
 160                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 161                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 162                 EXT4_FEATURE_INCOMPAT_LARGEDIR,
 163         /* R/O compat */
 164         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 165                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 166                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 167                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 168                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 169                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 170                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 171                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 172                 EXT4_FEATURE_RO_COMPAT_READONLY |
 173                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 174                 EXT4_FEATURE_RO_COMPAT_VERITY
 175 };
 176
 177 static __u32 clear_ok_features[3] = {
 178         /* Compat */
 179         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 180                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 181                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 182         /* Incompat */
 183         EXT2_FEATURE_INCOMPAT_FILETYPE |
 184                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 185                 EXT4_FEATURE_INCOMPAT_MMP |
 186                 EXT4_FEATURE_INCOMPAT_64BIT |
 187                 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
 188         /* R/O compat */
 189         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 190                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 191                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 192                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 193                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 194                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 195                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 196                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 197                 EXT4_FEATURE_RO_COMPAT_READONLY
 198 };
 199
 200 /**
 201  * Try to get journal super block if any
 202  */
 203 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 204 {
 205         int retval;
 206         journal_superblock_t *jsb;
 207
 208         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 209                 return EXT2_ET_UNSUPP_FEATURE;
 210         }
 211
 212         /* Get the journal superblock */
 213         if ((retval = io_channel_read_blk64(jfs->io,
 214             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 215                 com_err(program_name, retval, "%s",
 216                 _("while reading journal superblock"));
 217                 return retval;
 218         }
 219
 220         jsb = (journal_superblock_t *) buf;
 221         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 222             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 223                 fputs(_("Journal superblock not found!\n"), stderr);
 224                 return EXT2_ET_BAD_MAGIC;
 225         }
 226
 227         return 0;
 228 }
 229
 230 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
 231                           int nr_users)
 232 {
 233         int i;
 234         for (i = 0; i < nr_users; i++) {
 235                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 236                         return &s_users[i * UUID_SIZE];
 237         }
 238
 239         return NULL;
 240 }
 241
 242 /*
 243  * Remove an external journal from the filesystem
 244  */
 245 static int remove_journal_device(ext2_filsys fs)
 246 {
 247         char            *journal_path;
 248         ext2_filsys     jfs;
 249         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 250         journal_superblock_t    *jsb;
 251         int             i, nr_users;
 252         errcode_t       retval;
 253         int             commit_remove_journal = 0;
 254         io_manager      io_ptr;
 255
 256         if (f_flag)
 257                 commit_remove_journal = 1; /* force removal even if error */
 258
 259         uuid_unparse(fs->super->s_journal_uuid, buf);
 260         journal_path = blkid_get_devname(NULL, "UUID", buf);
 261
 262         if (!journal_path) {
 263                 journal_path =
 264                         ext2fs_find_block_device(fs->super->s_journal_dev);
 265                 if (!journal_path)
 266                         goto no_valid_journal;
 267         }
 268
 269 #ifdef CONFIG_TESTIO_DEBUG
 270         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 271                 io_ptr = test_io_manager;
 272                 test_io_backing_manager = unix_io_manager;
 273         } else
 274 #endif
 275                 io_ptr = unix_io_manager;
 276         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 277                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 278                              fs->blocksize, io_ptr, &jfs);
 279         if (retval) {
 280                 com_err(program_name, retval, "%s",
 281                         _("while trying to open external journal"));
 282                 goto no_valid_journal;
 283         }
 284
 285         if ((retval = get_journal_sb(jfs, buf))) {
 286                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 287                         fprintf(stderr, _("%s is not a journal device.\n"),
 288                                 journal_path);
 289                 goto no_valid_journal;
 290         }
 291
 292         jsb = (journal_superblock_t *) buf;
 293         /* Find the filesystem UUID */
 294         nr_users = ntohl(jsb->s_nr_users);
 295         if (nr_users > JFS_USERS_MAX) {
 296                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
 297                                  "is too high (%d).\n"), nr_users);
 298                 commit_remove_journal = 1;
 299                 goto no_valid_journal;
 300         }
 301
 302         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 303                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 304                       stderr);
 305                 commit_remove_journal = 1;
 306                 goto no_valid_journal;
 307         }
 308         nr_users--;
 309         for (i = 0; i < nr_users; i++)
 310                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 311         jsb->s_nr_users = htonl(nr_users);
 312
 313         /* Write back the journal superblock */
 314         retval = io_channel_write_blk64(jfs->io,
 315                                         ext2fs_journal_sb_start(fs->blocksize),
 316                                         -SUPERBLOCK_SIZE, buf);
 317         if (retval) {
 318                 com_err(program_name, retval,
 319                         "while writing journal superblock.");
 320                 goto no_valid_journal;
 321         }
 322
 323         commit_remove_journal = 1;
 324
 325 no_valid_journal:
 326         if (commit_remove_journal == 0) {
 327                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 328                         "Use -f option to remove missing journal device.\n"),
 329                       stderr);
 330                 return 1;
 331         }
 332         fs->super->s_journal_dev = 0;
 333         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 334         uuid_clear(fs->super->s_journal_uuid);
 335         ext2fs_mark_super_dirty(fs);
 336         fputs(_("Journal removed\n"), stdout);
 337         free(journal_path);
 338
 339         return 0;
 340 }
 341
 342 /* Helper function for remove_journal_inode */
 343 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 344                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 345                                blk64_t ref_block EXT2FS_ATTR((unused)),
 346                                int ref_offset EXT2FS_ATTR((unused)),
 347                                void *private EXT2FS_ATTR((unused)))
 348 {
 349         blk64_t block;
 350         int     group;
 351
 352         block = *blocknr;
 353         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 354         group = ext2fs_group_of_blk2(fs, block);
 355         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 356         ext2fs_group_desc_csum_set(fs, group);
 357         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 358         return 0;
 359 }
 360
 361 /*
 362  * Remove the journal inode from the filesystem
 363  */
 364 static errcode_t remove_journal_inode(ext2_filsys fs)
 365 {
 366         struct ext2_inode       inode;
 367         errcode_t               retval;
 368         ino_t                   ino = fs->super->s_journal_inum;
 369
 370         retval = ext2fs_read_inode(fs, ino,  &inode);
 371         if (retval) {
 372                 com_err(program_name, retval, "%s",
 373                         _("while reading journal inode"));
 374                 return retval;
 375         }
 376         if (ino == EXT2_JOURNAL_INO) {
 377                 retval = ext2fs_read_bitmaps(fs);
 378                 if (retval) {
 379                         com_err(program_name, retval, "%s",
 380                                 _("while reading bitmaps"));
 381                         return retval;
 382                 }
 383                 retval = ext2fs_block_iterate3(fs, ino,
 384                                                BLOCK_FLAG_READ_ONLY, NULL,
 385                                                release_blocks_proc, NULL);
 386                 if (retval) {
 387                         com_err(program_name, retval, "%s",
 388                                 _("while clearing journal inode"));
 389                         return retval;
 390                 }
 391                 memset(&inode, 0, sizeof(inode));
 392                 ext2fs_mark_bb_dirty(fs);
 393                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 394         } else
 395                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 396         retval = ext2fs_write_inode(fs, ino, &inode);
 397         if (retval) {
 398                 com_err(program_name, retval, "%s",
 399                         _("while writing journal inode"));
 400                 return retval;
 401         }
 402         fs->super->s_journal_inum = 0;
 403         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 404         ext2fs_mark_super_dirty(fs);
 405
 406         return 0;
 407 }
 408
 409 /*
 410  * Update the default mount options
 411  */
 412 static int update_mntopts(ext2_filsys fs, char *mntopts)
 413 {
 414         struct ext2_super_block *sb = fs->super;
 415
 416         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 417                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 418                         mntopts);
 419                 return 1;
 420         }
 421         ext2fs_mark_super_dirty(fs);
 422
 423         return 0;
 424 }
 425
 426 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
 427 {
 428         /* Refuse to modify anything but a freshly checked valid filesystem. */
 429         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 430             (fs->super->s_state & EXT2_ERROR_FS) ||
 431             (fs->super->s_lastcheck < fs->super->s_mtime)) {
 432                 puts(_(fsck_explain));
 433                 puts(_(please_fsck));
 434                 if (mount_flags & EXT2_MF_READONLY)
 435                         printf("%s", _("(and reboot afterwards!)\n"));
 436                 exit(1);
 437         }
 438
 439         /* Give the admin a few seconds to bail out of a dangerous op. */
 440         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 441                 return;
 442
 443         puts(prompt);
 444         proceed_question(5);
 445 }
 446
 447 static void request_dir_fsck_afterwards(ext2_filsys fs)
 448 {
 449         static int requested;
 450
 451         if (requested++)
 452                 return;
 453         fsck_requested++;
 454         fs->super->s_state &= ~EXT2_VALID_FS;
 455         puts(_(fsck_explain));
 456         puts(_(please_dir_fsck));
 457         if (mount_flags & EXT2_MF_READONLY)
 458                 printf("%s", _("(and reboot afterwards!)\n"));
 459 }
 460
 461 static void request_fsck_afterwards(ext2_filsys fs)
 462 {
 463         static int requested = 0;
 464
 465         if (requested++)
 466                 return;
 467         fsck_requested++;
 468         fs->super->s_state &= ~EXT2_VALID_FS;
 469         printf("\n%s\n", _(please_fsck));
 470         if (mount_flags & EXT2_MF_READONLY)
 471                 printf("%s", _("(and reboot afterwards!)\n"));
 472 }
 473
 474 static void convert_64bit(ext2_filsys fs, int direction)
 475 {
 476         /*
 477          * Is resize2fs going to demand a fsck run? Might as well tell the
 478          * user now.
 479          */
 480         if (!fsck_requested &&
 481             ((fs->super->s_state & EXT2_ERROR_FS) ||
 482              !(fs->super->s_state & EXT2_VALID_FS) ||
 483              fs->super->s_lastcheck < fs->super->s_mtime))
 484                 request_fsck_afterwards(fs);
 485         if (fsck_requested)
 486                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 487                         direction > 0 ? "-b" : "-s", fs->device_name);
 488         else
 489                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 490                         direction > 0 ? "-b" : "-s", fs->device_name);
 491
 492         if (undo_file)
 493                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 494         if (direction > 0)
 495                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 496         else
 497                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 498 }
 499
 500 /*
 501  * Rewrite directory blocks with checksums
 502  */
 503 struct rewrite_dir_context {
 504         char *buf;
 505         errcode_t errcode;
 506         ext2_ino_t dir;
 507         int is_htree;
 508 };
 509
 510 static int rewrite_dir_block(ext2_filsys fs,
 511                              blk64_t    *blocknr,
 512                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 513                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 514                              int        ref_offset EXT2FS_ATTR((unused)),
 515                              void       *priv_data)
 516 {
 517         struct ext2_dx_countlimit *dcl = NULL;
 518         struct rewrite_dir_context *ctx = priv_data;
 519         int dcl_offset, changed = 0;
 520
 521         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 522                                               ctx->dir);
 523         if (ctx->errcode)
 524                 return BLOCK_ABORT;
 525
 526         /* if htree node... */
 527         if (ctx->is_htree)
 528                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 529                                          &dcl, &dcl_offset);
 530         if (dcl) {
 531                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 532                         /* Ensure limit is the max size */
 533                         int max_entries = (fs->blocksize - dcl_offset) /
 534                                           sizeof(struct ext2_dx_entry);
 535                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 536                                 changed = 1;
 537                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 538                         }
 539                 } else {
 540                         /* If htree block is full then rebuild the dir */
 541                         if (ext2fs_le16_to_cpu(dcl->count) ==
 542                             ext2fs_le16_to_cpu(dcl->limit)) {
 543                                 request_dir_fsck_afterwards(fs);
 544                                 return 0;
 545                         }
 546                         /*
 547                          * Ensure dcl->limit is small enough to leave room for
 548                          * the checksum tail.
 549                          */
 550                         int max_entries = (fs->blocksize - (dcl_offset +
 551                                                 sizeof(struct ext2_dx_tail))) /
 552                                           sizeof(struct ext2_dx_entry);
 553                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 554                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 555                         /* Always rewrite checksum */
 556                         changed = 1;
 557                 }
 558         } else {
 559                 unsigned int rec_len, name_size;
 560                 char *top = ctx->buf + fs->blocksize;
 561                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 562                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 563
 564                 /* Find last and penultimate dirent */
 565                 while ((char *)de < top) {
 566                         penultimate_de = last_de;
 567                         last_de = de;
 568                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 569                         if (!ctx->errcode && !rec_len)
 570                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 571                         if (ctx->errcode)
 572                                 return BLOCK_ABORT;
 573                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 574                 }
 575                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 576                 if (ctx->errcode)
 577                         return BLOCK_ABORT;
 578                 name_size = ext2fs_dirent_name_len(last_de);
 579
 580                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 581                         if (!penultimate_de)
 582                                 return 0;
 583                         if (last_de->inode ||
 584                             name_size ||
 585                             rec_len != sizeof(struct ext2_dir_entry_tail))
 586                                 return 0;
 587                         /*
 588                          * The last dirent is unused and the right length to
 589                          * have stored a checksum.  Erase it.
 590                          */
 591                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 592                                                           &rec_len);
 593                         if (!rec_len)
 594                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 595                         if (ctx->errcode)
 596                                 return BLOCK_ABORT;
 597                         ext2fs_set_rec_len(fs, rec_len +
 598                                         sizeof(struct ext2_dir_entry_tail),
 599                                         penultimate_de);
 600                         changed = 1;
 601                 } else {
 602                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 603                         struct ext2_dir_entry_tail *t;
 604
 605                         /*
 606                          * If the last dirent looks like the tail, just update
 607                          * the checksum.
 608                          */
 609                         if (!last_de->inode &&
 610                             rec_len == csum_size) {
 611                                 t = (struct ext2_dir_entry_tail *)last_de;
 612                                 t->det_reserved_name_len =
 613                                                 EXT2_DIR_NAME_LEN_CSUM;
 614                                 changed = 1;
 615                                 goto out;
 616                         }
 617                         if (name_size & 3)
 618                                 name_size = (name_size & ~3) + 4;
 619                         /* If there's not enough space for the tail, e2fsck */
 620                         if (rec_len <= (8 + name_size + csum_size)) {
 621                                 request_dir_fsck_afterwards(fs);
 622                                 return 0;
 623                         }
 624                         /* Shorten that last de and insert the tail */
 625                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 626                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 627                         ext2fs_initialize_dirent_tail(fs, t);
 628
 629                         /* Always update checksum */
 630                         changed = 1;
 631                 }
 632         }
 633
 634 out:
 635         if (!changed)
 636                 return 0;
 637
 638         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 639                                                0, ctx->dir);
 640         if (ctx->errcode)
 641                 return BLOCK_ABORT;
 642
 643         return 0;
 644 }
 645
 646 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 647                                    struct ext2_inode *inode)
 648 {
 649         errcode_t       retval;
 650         struct rewrite_dir_context ctx;
 651
 652         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 653         if (retval)
 654                 return retval;
 655
 656         ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
 657         ctx.dir = dir;
 658         ctx.errcode = 0;
 659         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 660                                                 BLOCK_FLAG_DATA_ONLY,
 661                                        0, rewrite_dir_block, &ctx);
 662
 663         ext2fs_free_mem(&ctx.buf);
 664         if (retval)
 665                 return retval;
 666
 667         return ctx.errcode;
 668 }
 669
 670 /*
 671  * Context information that does not change across rewrite_one_inode()
 672  * invocations.
 673  */
 674 struct rewrite_context {
 675         ext2_filsys fs;
 676         struct ext2_inode *zero_inode;
 677         char *ea_buf;
 678         int inode_size;
 679 };
 680
 681 #define fatal_err(code, args...)                \
 682         do {                                    \
 683                 com_err(__func__, code, args);  \
 684                 exit(1);                        \
 685         } while (0);
 686
 687 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 688                                  struct ext2_inode *inode)
 689 {
 690         errcode_t retval;
 691         ext2_file_t file;
 692         __u32 hash;
 693
 694         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 695         if (retval)
 696                 fatal_err(retval, "open ea_inode");
 697         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 698                                   NULL);
 699         if (retval)
 700                 fatal_err(retval, "read ea_inode");
 701         retval = ext2fs_file_close(file);
 702         if (retval)
 703                 fatal_err(retval, "close ea_inode");
 704
 705         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 706                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 707         ext2fs_set_ea_inode_hash(inode, hash);
 708 }
 709
 710 static int update_xattr_entry_hashes(ext2_filsys fs,
 711                                      struct ext2_ext_attr_entry *entry,
 712                                      struct ext2_ext_attr_entry *end)
 713 {
 714         int modified = 0;
 715         errcode_t retval;
 716
 717         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 718                 if (entry->e_value_inum) {
 719                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 720                                                              &entry->e_hash);
 721                         if (retval)
 722                                 fatal_err(retval, "hash ea_inode entry");
 723                         modified = 1;
 724                 }
 725                 entry = EXT2_EXT_ATTR_NEXT(entry);
 726         }
 727         return modified;
 728 }
 729
 730 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 731                                        struct ext2_inode_large *inode)
 732 {
 733         struct ext2_ext_attr_entry *start, *end;
 734         __u32 *ea_magic;
 735
 736         if (inode->i_extra_isize == 0)
 737                 return;
 738
 739         if (inode->i_extra_isize & 3 ||
 740             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 741                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 742
 743         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 744                                 inode->i_extra_isize);
 745         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 746                 return;
 747
 748         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 749         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 750
 751         update_xattr_entry_hashes(ctx->fs, start, end);
 752 }
 753
 754 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 755                                       char *block_buf)
 756 {
 757         struct ext2_ext_attr_header *header;
 758         struct ext2_ext_attr_entry *start, *end;
 759
 760         header = (struct ext2_ext_attr_header *)block_buf;
 761         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 762                 return;
 763
 764         start = (struct ext2_ext_attr_entry *)(header+1);
 765         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 766
 767         if (update_xattr_entry_hashes(ctx->fs, start, end))
 768                 ext2fs_ext_attr_block_rehash(header, end);
 769 }
 770
 771 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 772                               struct ext2_inode *inode)
 773 {
 774         blk64_t file_acl_block;
 775         errcode_t retval;
 776
 777         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 778                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 779                         return;
 780                 memset(inode, 0, ctx->inode_size);
 781         }
 782
 783         if (inode->i_flags & EXT4_EA_INODE_FL)
 784                 update_ea_inode_hash(ctx, ino, inode);
 785
 786         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 787                 update_inline_xattr_hashes(ctx,
 788                                            (struct ext2_inode_large *)inode);
 789
 790         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 791         if (retval)
 792                 fatal_err(retval, "while writing inode");
 793
 794         retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
 795         if (retval)
 796                 fatal_err(retval, "while rewriting extents");
 797
 798         if (LINUX_S_ISDIR(inode->i_mode) &&
 799             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 800                 retval = rewrite_directory(ctx->fs, ino, inode);
 801                 if (retval)
 802                         fatal_err(retval, "while rewriting directories");
 803         }
 804
 805         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 806         if (!file_acl_block)
 807                 return;
 808
 809         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 810                                        ino);
 811         if (retval)
 812                 fatal_err(retval, "while rewriting extended attribute");
 813
 814         update_block_xattr_hashes(ctx, ctx->ea_buf);
 815         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 816                                         ino);
 817         if (retval)
 818                 fatal_err(retval, "while rewriting extended attribute");
 819 }
 820
 821 /*
 822  * Forcibly set checksums in all inodes.
 823  */
 824 static void rewrite_inodes(ext2_filsys fs)
 825 {
 826         ext2_inode_scan scan;
 827         errcode_t       retval;
 828         ext2_ino_t      ino;
 829         struct ext2_inode *inode;
 830         int pass;
 831         struct rewrite_context ctx = {
 832                 .fs = fs,
 833                 .inode_size = EXT2_INODE_SIZE(fs->super),
 834         };
 835
 836         if (fs->super->s_creator_os == EXT2_OS_HURD)
 837                 return;
 838
 839         retval = ext2fs_get_mem(ctx.inode_size, &inode);
 840         if (retval)
 841                 fatal_err(retval, "while allocating memory");
 842
 843         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 844         if (retval)
 845                 fatal_err(retval, "while allocating memory");
 846
 847         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 848         if (retval)
 849                 fatal_err(retval, "while allocating memory");
 850
 851         /*
 852          * Extended attribute inodes have a lookup hash that needs to be
 853          * recalculated with the new csum_seed. Other inodes referencing xattr
 854          * inodes need this value to be up to date. That's why we do two passes:
 855          *
 856          * pass 1: update xattr inodes to update their lookup hash as well as
 857          *         other checksums.
 858          *
 859          * pass 2: go over other inodes to update their checksums.
 860          */
 861         if (ext2fs_has_feature_ea_inode(fs->super))
 862                 pass = 1;
 863         else
 864                 pass = 2;
 865         for (;pass <= 2; pass++) {
 866                 retval = ext2fs_open_inode_scan(fs, 0, &scan);
 867                 if (retval)
 868                         fatal_err(retval, "while opening inode scan");
 869
 870                 do {
 871                         retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 872                                                             ctx.inode_size);
 873                         if (retval)
 874                                 fatal_err(retval, "while getting next inode");
 875                         if (!ino)
 876                                 break;
 877
 878                         if (((pass == 1) &&
 879                              (inode->i_flags & EXT4_EA_INODE_FL)) ||
 880                             ((pass == 2) &&
 881                              !(inode->i_flags & EXT4_EA_INODE_FL)))
 882                                 rewrite_one_inode(&ctx, ino, inode);
 883                 } while (ino);
 884
 885                 ext2fs_close_inode_scan(scan);
 886         }
 887
 888         ext2fs_free_mem(&ctx.zero_inode);
 889         ext2fs_free_mem(&ctx.ea_buf);
 890         ext2fs_free_mem(&inode);
 891 }
 892
 893 static void rewrite_metadata_checksums(ext2_filsys fs)
 894 {
 895         errcode_t retval;
 896         dgrp_t i;
 897
 898         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 899         ext2fs_init_csum_seed(fs);
 900         for (i = 0; i < fs->group_desc_count; i++)
 901                 ext2fs_group_desc_csum_set(fs, i);
 902         retval = ext2fs_read_bitmaps(fs);
 903         if (retval)
 904                 fatal_err(retval, "while reading bitmaps");
 905         rewrite_inodes(fs);
 906         ext2fs_mark_ib_dirty(fs);
 907         ext2fs_mark_bb_dirty(fs);
 908         ext2fs_mmp_update2(fs, 1);
 909         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 910         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 911         if (ext2fs_has_feature_metadata_csum(fs->super))
 912                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 913         else
 914                 fs->super->s_checksum_type = 0;
 915         ext2fs_mark_super_dirty(fs);
 916 }
 917
 918 static void enable_uninit_bg(ext2_filsys fs)
 919 {
 920         struct ext2_group_desc *gd;
 921         dgrp_t i;
 922
 923         for (i = 0; i < fs->group_desc_count; i++) {
 924                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 925                 gd->bg_itable_unused = 0;
 926                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 927                 ext2fs_group_desc_csum_set(fs, i);
 928         }
 929         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 930 }
 931
 932 static errcode_t zero_empty_inodes(ext2_filsys fs)
 933 {
 934         int length = EXT2_INODE_SIZE(fs->super);
 935         struct ext2_inode *inode = NULL;
 936         ext2_inode_scan scan;
 937         errcode_t       retval;
 938         ext2_ino_t      ino;
 939
 940         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 941         if (retval)
 942                 goto out;
 943
 944         retval = ext2fs_get_mem(length, &inode);
 945         if (retval)
 946                 goto out;
 947
 948         do {
 949                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 950                 if (retval)
 951                         goto out;
 952                 if (!ino)
 953                         break;
 954                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 955                         memset(inode, 0, length);
 956                         retval = ext2fs_write_inode_full(fs, ino, inode,
 957                                                          length);
 958                         if (retval)
 959                                 goto out;
 960                 }
 961         } while (1);
 962
 963 out:
 964         ext2fs_free_mem(&inode);
 965         ext2fs_close_inode_scan(scan);
 966         return retval;
 967 }
 968
 969 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
 970 {
 971         struct ext2_group_desc *gd;
 972         dgrp_t i;
 973         errcode_t retval;
 974         blk64_t b, c, d;
 975
 976         /* Load bitmaps to ensure that the uninit ones get written out */
 977         fs->super->s_feature_ro_compat |= csum_feature_flag;
 978         retval = ext2fs_read_bitmaps(fs);
 979         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
 980         if (retval) {
 981                 com_err("disable_uninit_bg", retval,
 982                         "while reading bitmaps");
 983                 request_fsck_afterwards(fs);
 984                 return retval;
 985         }
 986         ext2fs_mark_ib_dirty(fs);
 987         ext2fs_mark_bb_dirty(fs);
 988
 989         /* If we're only turning off uninit_bg, zero the inodes */
 990         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
 991                 retval = zero_empty_inodes(fs);
 992                 if (retval) {
 993                         com_err("disable_uninit_bg", retval,
 994                                 "while zeroing unused inodes");
 995                         request_fsck_afterwards(fs);
 996                         return retval;
 997                 }
 998         }
 999
1000         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1001         for (i = 0; i < fs->group_desc_count; i++) {
1002                 b = ext2fs_block_bitmap_loc(fs, i);
1003                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1004                 b = ext2fs_inode_bitmap_loc(fs, i);
1005                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1006
1007                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1008                 if (retval == 0 && b)
1009                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1010                 if (retval == 0 && c)
1011                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1012                 if (retval == 0 && d)
1013                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1014                 if (retval) {
1015                         com_err("disable_uninit_bg", retval,
1016                                 "while initializing block bitmaps");
1017                         request_fsck_afterwards(fs);
1018                 }
1019
1020                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1021                 gd->bg_itable_unused = 0;
1022                 gd->bg_flags = 0;
1023                 ext2fs_group_desc_csum_set(fs, i);
1024         }
1025         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1026         ext2fs_mark_super_dirty(fs);
1027
1028         return 0;
1029 }
1030
1031 static void
1032 try_confirm_csum_seed_support(void)
1033 {
1034         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1035                 fputs(_("WARNING: Could not confirm kernel support for "
1036                         "metadata_csum_seed.\n  This requires Linux >= "
1037                         "v4.4.\n"), stderr);
1038 }
1039
1040 /*
1041  * Update the feature set as provided by the user.
1042  */
1043 static int update_feature_set(ext2_filsys fs, char *features)
1044 {
1045         struct ext2_super_block *sb = fs->super;
1046         __u32           old_features[3];
1047         int             type_err;
1048         unsigned int    mask_err;
1049         errcode_t       err;
1050         enum quota_type qtype;
1051
1052 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1053                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1054 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1055                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1056 #define FEATURE_CHANGED(type, mask) ((mask) & \
1057                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1058
1059         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1060         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1061         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1062
1063         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1064                               ok_features, clear_ok_features,
1065                               &type_err, &mask_err)) {
1066                 if (!mask_err)
1067                         fprintf(stderr,
1068                                 _("Invalid filesystem option set: %s\n"),
1069                                 features);
1070                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1071                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1072                                           "not supported.\n"),
1073                                 e2p_feature2string(type_err &
1074                                                    E2P_FEATURE_TYPE_MASK,
1075                                                    mask_err));
1076                 else
1077                         fprintf(stderr, _("Setting filesystem feature '%s' "
1078                                           "not supported.\n"),
1079                                 e2p_feature2string(type_err, mask_err));
1080                 return 1;
1081         }
1082
1083         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1084                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1085                     !(mount_flags & EXT2_MF_READONLY)) {
1086                         fputs(_("The has_journal feature may only be "
1087                                 "cleared when the filesystem is\n"
1088                                 "unmounted or mounted "
1089                                 "read-only.\n"), stderr);
1090                         return 1;
1091                 }
1092                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1093                     f_flag < 2) {
1094                         fputs(_("The needs_recovery flag is set.  "
1095                                 "Please run e2fsck before clearing\n"
1096                                 "the has_journal flag.\n"), stderr);
1097                         return 1;
1098                 }
1099                 if (sb->s_journal_inum) {
1100                         if (remove_journal_inode(fs))
1101                                 return 1;
1102                 }
1103                 if (sb->s_journal_dev) {
1104                         if (remove_journal_device(fs))
1105                                 return 1;
1106                 }
1107         }
1108
1109         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1110                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1111                 if (ext2fs_has_feature_meta_bg(sb)) {
1112                         fputs(_("Setting filesystem feature 'sparse_super' "
1113                                 "not supported\nfor filesystems with "
1114                                 "the meta_bg feature enabled.\n"),
1115                                 stderr);
1116                         return 1;
1117                 }
1118         }
1119
1120         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1121                 int error;
1122
1123                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1124                     (mount_flags & EXT2_MF_READONLY)) {
1125                         fputs(_("The multiple mount protection feature can't\n"
1126                                 "be set if the filesystem is mounted or\n"
1127                                 "read-only.\n"), stderr);
1128                         return 1;
1129                 }
1130
1131                 error = ext2fs_mmp_init(fs);
1132                 if (error) {
1133                         fputs(_("\nError while enabling multiple mount "
1134                                 "protection feature."), stderr);
1135                         return 1;
1136                 }
1137
1138                 /*
1139                  * We want to update group desc with the new free blocks count
1140                  */
1141                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1142
1143                 printf(_("Multiple mount protection has been enabled "
1144                          "with update interval %ds.\n"),
1145                        sb->s_mmp_update_interval);
1146         }
1147
1148         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1149                 int error;
1150
1151                 if (mount_flags & EXT2_MF_READONLY) {
1152                         fputs(_("The multiple mount protection feature cannot\n"
1153                                 "be disabled if the filesystem is readonly.\n"),
1154                                 stderr);
1155                         return 1;
1156                 }
1157
1158                 error = ext2fs_read_bitmaps(fs);
1159                 if (error) {
1160                         fputs(_("Error while reading bitmaps\n"), stderr);
1161                         return 1;
1162                 }
1163
1164                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1165                 if (error) {
1166                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1167
1168                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1169                                 printf(_("Magic number in MMP block does not "
1170                                          "match. expected: %x, actual: %x\n"),
1171                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1172                         else
1173                                 com_err(program_name, error, "%s",
1174                                         _("while reading MMP block."));
1175                         goto mmp_error;
1176                 }
1177
1178                 /* We need to force out the group descriptors as well */
1179                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1180                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1181 mmp_error:
1182                 sb->s_mmp_block = 0;
1183                 sb->s_mmp_update_interval = 0;
1184         }
1185
1186         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1187                 /*
1188                  * If adding a journal flag, let the create journal
1189                  * code below handle setting the flag and creating the
1190                  * journal.  We supply a default size if necessary.
1191                  */
1192                 if (!journal_size)
1193                         journal_size = -1;
1194                 ext2fs_clear_feature_journal(sb);
1195         }
1196
1197         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1198                 if (!sb->s_def_hash_version)
1199                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1200                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1201                         uuid_generate((unsigned char *) sb->s_hash_seed);
1202         }
1203
1204         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1205                 if (ext2fs_check_desc(fs)) {
1206                         fputs(_("Clearing the flex_bg flag would "
1207                                 "cause the the filesystem to be\n"
1208                                 "inconsistent.\n"), stderr);
1209                         return 1;
1210                 }
1211         }
1212
1213         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1214                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1215                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1216                     !(mount_flags & EXT2_MF_READONLY)) {
1217                         fputs(_("The huge_file feature may only be "
1218                                 "cleared when the filesystem is\n"
1219                                 "unmounted or mounted "
1220                                 "read-only.\n"), stderr);
1221                         return 1;
1222                 }
1223         }
1224
1225         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1226                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1227                 check_fsck_needed(fs,
1228                         _("Enabling checksums could take some time."));
1229                 if (mount_flags & EXT2_MF_MOUNTED) {
1230                         fputs(_("Cannot enable metadata_csum on a mounted "
1231                                 "filesystem!\n"), stderr);
1232                         exit(1);
1233                 }
1234                 if (!ext2fs_has_feature_extents(fs->super))
1235                         printf("%s",
1236                                _("Extents are not enabled.  The file extent "
1237                                  "tree can be checksummed, whereas block maps "
1238                                  "cannot.  Not enabling extents reduces the "
1239                                  "coverage of metadata checksumming.  "
1240                                  "Re-run with -O extent to rectify.\n"));
1241                 if (!ext2fs_has_feature_64bit(fs->super))
1242                         printf("%s",
1243                                _("64-bit filesystem support is not enabled.  "
1244                                  "The larger fields afforded by this feature "
1245                                  "enable full-strength checksumming.  "
1246                                  "Run resize2fs -b to rectify.\n"));
1247                 rewrite_checksums = 1;
1248                 /* metadata_csum supersedes uninit_bg */
1249                 ext2fs_clear_feature_gdt_csum(fs->super);
1250
1251                 /* if uninit_bg was previously off, rewrite group desc */
1252                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1253                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1254                         enable_uninit_bg(fs);
1255
1256                 /*
1257                  * Since metadata_csum supersedes uninit_bg, pretend like
1258                  * uninit_bg has been off all along.
1259                  */
1260                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1261                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1262         }
1263
1264         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1265                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1266                 __u32   test_features[3];
1267
1268                 check_fsck_needed(fs,
1269                         _("Disabling checksums could take some time."));
1270                 if (mount_flags & EXT2_MF_MOUNTED) {
1271                         fputs(_("Cannot disable metadata_csum on a mounted "
1272                                 "filesystem!\n"), stderr);
1273                         exit(1);
1274                 }
1275                 rewrite_checksums = 1;
1276
1277                 /* Enable uninit_bg unless the user expressly turned it off */
1278                 memcpy(test_features, old_features, sizeof(test_features));
1279                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1280                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1281                 e2p_edit_feature2(features, test_features, ok_features,
1282                                   clear_ok_features, NULL, NULL);
1283                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1284                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1285                         ext2fs_set_feature_gdt_csum(fs->super);
1286
1287                 /*
1288                  * If we're turning off metadata_csum and not turning on
1289                  * uninit_bg, rewrite group desc.
1290                  */
1291                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1292                         err = disable_uninit_bg(fs,
1293                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1294                         if (err)
1295                                 return 1;
1296                 } else
1297                         /*
1298                          * metadata_csum previously provided uninit_bg, so if
1299                          * we're also setting the uninit_bg feature bit,
1300                          * pretend like it was previously enabled.  Checksums
1301                          * will be rewritten with crc16 later.
1302                          */
1303                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1304                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1305                 fs->super->s_checksum_seed = 0;
1306                 ext2fs_clear_feature_csum_seed(fs->super);
1307         }
1308
1309         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1310                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1311                 /* Do not enable uninit_bg when metadata_csum enabled */
1312                 if (ext2fs_has_feature_metadata_csum(fs->super))
1313                         ext2fs_clear_feature_gdt_csum(fs->super);
1314                 else
1315                         enable_uninit_bg(fs);
1316         }
1317
1318         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1319                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1320                 err = disable_uninit_bg(fs,
1321                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1322                 if (err)
1323                         return 1;
1324         }
1325
1326         /*
1327          * We don't actually toggle 64bit; resize2fs does that.  But this
1328          * must come after the metadata_csum feature_on so that it won't
1329          * complain about the lack of 64bit.
1330          */
1331         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1332                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1333                 if (mount_flags & EXT2_MF_MOUNTED) {
1334                         fprintf(stderr, _("Cannot enable 64-bit mode "
1335                                           "while mounted!\n"));
1336                         exit(1);
1337                 }
1338                 ext2fs_clear_feature_64bit(sb);
1339                 feature_64bit = 1;
1340         }
1341         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1342                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1343                 if (mount_flags & EXT2_MF_MOUNTED) {
1344                         fprintf(stderr, _("Cannot disable 64-bit mode "
1345                                           "while mounted!\n"));
1346                         exit(1);
1347                 }
1348                 ext2fs_set_feature_64bit(sb);
1349                 feature_64bit = -1;
1350         }
1351
1352         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1353                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1354                 /*
1355                  * Set the Q_flag here and handle the quota options in the code
1356                  * below.
1357                  */
1358                 if (!Q_flag) {
1359                         Q_flag = 1;
1360                         /* Enable usr/grp quota by default */
1361                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1362                                 if (qtype != PRJQUOTA)
1363                                         quota_enable[qtype] = QOPT_ENABLE;
1364                                 else
1365                                         quota_enable[qtype] = QOPT_DISABLE;
1366                         }
1367                 }
1368                 ext2fs_clear_feature_quota(sb);
1369         }
1370
1371         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1372                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1373                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1374                         fprintf(stderr, _("Cannot enable project feature; "
1375                                           "inode size too small.\n"));
1376                         exit(1);
1377                 }
1378                 Q_flag = 1;
1379                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1380         }
1381
1382         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1383                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1384                 Q_flag = 1;
1385                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1386         }
1387
1388         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1389                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1390                 /*
1391                  * Set the Q_flag here and handle the quota options in the code
1392                  * below.
1393                  */
1394                 if (Q_flag)
1395                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1396                                 "arguments.\n"), stderr);
1397                 Q_flag = 1;
1398                 /* Disable all quota by default */
1399                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1400                         quota_enable[qtype] = QOPT_DISABLE;
1401         }
1402
1403         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1404                 fs->super->s_encrypt_algos[0] =
1405                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1406                 fs->super->s_encrypt_algos[1] =
1407                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1408         }
1409
1410         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1411                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1412                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1413                         fputs(_("Setting feature 'metadata_csum_seed' "
1414                                 "is only supported\non filesystems with "
1415                                 "the metadata_csum feature enabled.\n"),
1416                                 stderr);
1417                         return 1;
1418                 }
1419                 try_confirm_csum_seed_support();
1420                 fs->super->s_checksum_seed = fs->csum_seed;
1421         }
1422
1423         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1424                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1425                 __le32 uuid_seed;
1426
1427                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1428                                         sizeof(fs->super->s_uuid));
1429                 if (fs->super->s_checksum_seed != uuid_seed) {
1430                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1431                                 fputs(_("UUID has changed since enabling "
1432                 "metadata_csum.  Filesystem must be unmounted "
1433                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1434                                       stderr);
1435                                 return 1;
1436                         }
1437                         check_fsck_needed(fs, _("Recalculating checksums "
1438                                                 "could take some time."));
1439                         rewrite_checksums = 1;
1440                 }
1441         }
1442
1443         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1444             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1445              sb->s_feature_incompat))
1446                 ext2fs_update_dynamic_rev(fs);
1447
1448         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1449                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1450             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1451                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1452             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1453                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1454             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1455                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1456             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1457                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1458                 request_fsck_afterwards(fs);
1459
1460         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1461             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1462             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1463                 ext2fs_mark_super_dirty(fs);
1464
1465         return 0;
1466 }
1467
1468 /*
1469  * Add a journal to the filesystem.
1470  */
1471 static int add_journal(ext2_filsys fs)
1472 {
1473         unsigned long journal_blocks;
1474         errcode_t       retval;
1475         ext2_filsys     jfs;
1476         io_manager      io_ptr;
1477
1478         if (ext2fs_has_feature_journal(fs->super)) {
1479                 fputs(_("The filesystem already has a journal.\n"), stderr);
1480                 goto err;
1481         }
1482         if (journal_device) {
1483                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1484                                         NULL))
1485                         proceed_question(-1);
1486                 check_mount(journal_device, 0, _("journal"));
1487 #ifdef CONFIG_TESTIO_DEBUG
1488                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1489                         io_ptr = test_io_manager;
1490                         test_io_backing_manager = unix_io_manager;
1491                 } else
1492 #endif
1493                         io_ptr = unix_io_manager;
1494                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1495                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1496                                      fs->blocksize, io_ptr, &jfs);
1497                 if (retval) {
1498                         com_err(program_name, retval,
1499                                 _("\n\twhile trying to open journal on %s\n"),
1500                                 journal_device);
1501                         goto err;
1502                 }
1503                 printf(_("Creating journal on device %s: "),
1504                        journal_device);
1505                 fflush(stdout);
1506
1507                 retval = ext2fs_add_journal_device(fs, jfs);
1508                 ext2fs_close_free(&jfs);
1509                 if (retval) {
1510                         com_err(program_name, retval,
1511                                 _("while adding filesystem to journal on %s"),
1512                                 journal_device);
1513                         goto err;
1514                 }
1515                 fputs(_("done\n"), stdout);
1516         } else if (journal_size) {
1517                 fputs(_("Creating journal inode: "), stdout);
1518                 fflush(stdout);
1519                 journal_blocks = figure_journal_size(journal_size, fs);
1520
1521                 if (journal_location_string)
1522                         journal_location =
1523                                 parse_num_blocks2(journal_location_string,
1524                                                   fs->super->s_log_block_size);
1525                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1526                                                    journal_location,
1527                                                    journal_flags);
1528                 if (retval) {
1529                         fprintf(stderr, "\n");
1530                         com_err(program_name, retval, "%s",
1531                                 _("\n\twhile trying to create journal file"));
1532                         return retval;
1533                 } else
1534                         fputs(_("done\n"), stdout);
1535                 /*
1536                  * If the filesystem wasn't mounted, we need to force
1537                  * the block group descriptors out.
1538                  */
1539                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1540                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1541         }
1542         print_check_message(fs->super->s_max_mnt_count,
1543                             fs->super->s_checkinterval);
1544         return 0;
1545
1546 err:
1547         free(journal_device);
1548         return 1;
1549 }
1550
1551 static void handle_quota_options(ext2_filsys fs)
1552 {
1553         errcode_t retval;
1554         quota_ctx_t qctx;
1555         ext2_ino_t qf_ino;
1556         enum quota_type qtype;
1557         unsigned int qtype_bits = 0;
1558         int need_dirty = 0;
1559
1560         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1561                 if (quota_enable[qtype] != 0)
1562                         break;
1563         if (qtype == MAXQUOTAS)
1564                 /* Nothing to do. */
1565                 return;
1566
1567         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1568             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1569                 fprintf(stderr, _("Cannot enable project quota; "
1570                                   "inode size too small.\n"));
1571                 exit(1);
1572         }
1573
1574         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1575                 if (quota_enable[qtype] == QOPT_ENABLE)
1576                         qtype_bits |= 1 << qtype;
1577         }
1578
1579         retval = quota_init_context(&qctx, fs, qtype_bits);
1580         if (retval) {
1581                 com_err(program_name, retval,
1582                         _("while initializing quota context in support library"));
1583                 exit(1);
1584         }
1585
1586         if (qtype_bits)
1587                 quota_compute_usage(qctx);
1588
1589         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1590                 if (quota_enable[qtype] == QOPT_ENABLE &&
1591                     *quota_sb_inump(fs->super, qtype) == 0) {
1592                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1593                                 retval = quota_update_limits(qctx, qf_ino,
1594                                                              qtype);
1595                                 if (retval) {
1596                                         com_err(program_name, retval,
1597                                                 _("while updating quota limits (%d)"),
1598                                                 qtype);
1599                                         exit(1);
1600                                 }
1601                         }
1602                         retval = quota_write_inode(qctx, 1 << qtype);
1603                         if (retval) {
1604                                 com_err(program_name, retval,
1605                                         _("while writing quota file (%d)"),
1606                                         qtype);
1607                                 exit(1);
1608                         }
1609                         /* Enable Quota feature if one of quota enabled */
1610                         if (!ext2fs_has_feature_quota(fs->super)) {
1611                                 ext2fs_set_feature_quota(fs->super);
1612                                 need_dirty = 1;
1613                         }
1614                         if (qtype == PRJQUOTA &&
1615                             !ext2fs_has_feature_project(fs->super)) {
1616                                 ext2fs_set_feature_project(fs->super);
1617                                 need_dirty = 1;
1618                         }
1619                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1620                         retval = quota_remove_inode(fs, qtype);
1621                         if (retval) {
1622                                 com_err(program_name, retval,
1623                                         _("while removing quota file (%d)"),
1624                                         qtype);
1625                                 exit(1);
1626                         }
1627                         if (qtype == PRJQUOTA) {
1628                                 ext2fs_clear_feature_project(fs->super);
1629                                 need_dirty = 1;
1630                         }
1631                 }
1632         }
1633
1634         quota_release_context(&qctx);
1635         /* Clear Quota feature if all quota types disabled. */
1636         if (!qtype_bits) {
1637                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1638                         if (*quota_sb_inump(fs->super, qtype))
1639                                 break;
1640                 if (qtype == MAXQUOTAS) {
1641                         ext2fs_clear_feature_quota(fs->super);
1642                         need_dirty = 1;
1643                 }
1644
1645         }
1646         if (need_dirty)
1647                 ext2fs_mark_super_dirty(fs);
1648         return;
1649 }
1650
1651 static int option_handle_function(char *token)
1652 {
1653         if (strncmp(token, "usr", 3) == 0) {
1654                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1655         } else if (strncmp(token, "^usr", 4) == 0) {
1656                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1657         } else if (strncmp(token, "grp", 3) == 0) {
1658                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1659         } else if (strncmp(token, "^grp", 4) == 0) {
1660                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1661         } else if (strncmp(token, "prj", 3) == 0) {
1662                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1663         } else if (strncmp(token, "^prj", 4) == 0) {
1664                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1665         } else {
1666                 fputs(_("\nBad quota options specified.\n\n"
1667                         "Following valid quota options are available "
1668                         "(pass by separating with comma):\n"
1669                         "\t[^]usr[quota]\n"
1670                         "\t[^]grp[quota]\n"
1671                         "\t[^]prj[quota]\n"
1672                         "\n\n"), stderr);
1673                 return 1;
1674         }
1675         return 0;
1676 }
1677
1678 static void parse_e2label_options(int argc, char ** argv)
1679 {
1680         if ((argc < 2) || (argc > 3)) {
1681                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1682                 exit(1);
1683         }
1684         io_options = strchr(argv[1], '?');
1685         if (io_options)
1686                 *io_options++ = 0;
1687         device_name = blkid_get_devname(NULL, argv[1], NULL);
1688         if (!device_name) {
1689                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1690                         argv[1]);
1691                 exit(1);
1692         }
1693         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1694         if (argc == 3) {
1695                 open_flag |= EXT2_FLAG_RW;
1696                 L_flag = 1;
1697                 new_label = argv[2];
1698         } else
1699                 print_label++;
1700 }
1701
1702 static time_t parse_time(char *str)
1703 {
1704         struct  tm      ts;
1705
1706         if (strcmp(str, "now") == 0) {
1707                 return (time(0));
1708         }
1709         memset(&ts, 0, sizeof(ts));
1710 #ifdef HAVE_STRPTIME
1711         strptime(str, "%Y%m%d%H%M%S", &ts);
1712 #else
1713         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1714                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1715         ts.tm_year -= 1900;
1716         ts.tm_mon -= 1;
1717         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1718             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1719             ts.tm_min > 59 || ts.tm_sec > 61)
1720                 ts.tm_mday = 0;
1721 #endif
1722         if (ts.tm_mday == 0) {
1723                 com_err(program_name, 0,
1724                         _("Couldn't parse date/time specifier: %s"),
1725                         str);
1726                 usage();
1727         }
1728         ts.tm_isdst = -1;
1729         return (mktime(&ts));
1730 }
1731
1732 static void parse_tune2fs_options(int argc, char **argv)
1733 {
1734         int c;
1735         char *tmp;
1736         struct group *gr;
1737         struct passwd *pw;
1738         int ret;
1739         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1740
1741         open_flag = 0;
1742         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1743         while ((c = getopt(argc, argv, optstring)) != EOF)
1744                 switch (c) {
1745                 case 'c':
1746                         max_mount_count = strtol(optarg, &tmp, 0);
1747                         if (*tmp || max_mount_count > 16000) {
1748                                 com_err(program_name, 0,
1749                                         _("bad mounts count - %s"),
1750                                         optarg);
1751                                 usage();
1752                         }
1753                         if (max_mount_count == 0)
1754                                 max_mount_count = -1;
1755                         c_flag = 1;
1756                         open_flag = EXT2_FLAG_RW;
1757                         break;
1758                 case 'C':
1759                         mount_count = strtoul(optarg, &tmp, 0);
1760                         if (*tmp || mount_count > 16000) {
1761                                 com_err(program_name, 0,
1762                                         _("bad mounts count - %s"),
1763                                         optarg);
1764                                 usage();
1765                         }
1766                         C_flag = 1;
1767                         open_flag = EXT2_FLAG_RW;
1768                         break;
1769                 case 'e':
1770                         if (strcmp(optarg, "continue") == 0)
1771                                 errors = EXT2_ERRORS_CONTINUE;
1772                         else if (strcmp(optarg, "remount-ro") == 0)
1773                                 errors = EXT2_ERRORS_RO;
1774                         else if (strcmp(optarg, "panic") == 0)
1775                                 errors = EXT2_ERRORS_PANIC;
1776                         else {
1777                                 com_err(program_name, 0,
1778                                         _("bad error behavior - %s"),
1779                                         optarg);
1780                                 usage();
1781                         }
1782                         e_flag = 1;
1783                         open_flag = EXT2_FLAG_RW;
1784                         break;
1785                 case 'E':
1786                         extended_cmd = optarg;
1787                         open_flag |= EXT2_FLAG_RW;
1788                         break;
1789                 case 'f': /* Force */
1790                         f_flag++;
1791                         break;
1792                 case 'g':
1793                         resgid = strtoul(optarg, &tmp, 0);
1794                         if (*tmp) {
1795                                 gr = getgrnam(optarg);
1796                                 if (gr == NULL)
1797                                         tmp = optarg;
1798                                 else {
1799                                         resgid = gr->gr_gid;
1800                                         *tmp = 0;
1801                                 }
1802                         }
1803                         if (*tmp) {
1804                                 com_err(program_name, 0,
1805                                         _("bad gid/group name - %s"),
1806                                         optarg);
1807                                 usage();
1808                         }
1809                         g_flag = 1;
1810                         open_flag = EXT2_FLAG_RW;
1811                         break;
1812                 case 'i':
1813                         interval = strtoul(optarg, &tmp, 0);
1814                         switch (*tmp) {
1815                         case 's':
1816                                 tmp++;
1817                                 break;
1818                         case '\0':
1819                         case 'd':
1820                         case 'D': /* days */
1821                                 interval *= 86400;
1822                                 if (*tmp != '\0')
1823                                         tmp++;
1824                                 break;
1825                         case 'm':
1826                         case 'M': /* months! */
1827                                 interval *= 86400 * 30;
1828                                 tmp++;
1829                                 break;
1830                         case 'w':
1831                         case 'W': /* weeks */
1832                                 interval *= 86400 * 7;
1833                                 tmp++;
1834                                 break;
1835                         }
1836                         if (*tmp) {
1837                                 com_err(program_name, 0,
1838                                         _("bad interval - %s"), optarg);
1839                                 usage();
1840                         }
1841                         i_flag = 1;
1842                         open_flag = EXT2_FLAG_RW;
1843                         break;
1844                 case 'j':
1845                         if (!journal_size)
1846                                 journal_size = -1;
1847                         open_flag = EXT2_FLAG_RW;
1848                         break;
1849                 case 'J':
1850                         parse_journal_opts(optarg);
1851                         open_flag = EXT2_FLAG_RW;
1852                         break;
1853                 case 'l':
1854                         l_flag = 1;
1855                         break;
1856                 case 'L':
1857                         new_label = optarg;
1858                         L_flag = 1;
1859                         open_flag |= EXT2_FLAG_RW |
1860                                 EXT2_FLAG_JOURNAL_DEV_OK;
1861                         break;
1862                 case 'm':
1863                         reserved_ratio = strtod(optarg, &tmp);
1864                         if (*tmp || reserved_ratio > 50 ||
1865                             reserved_ratio < 0) {
1866                                 com_err(program_name, 0,
1867                                         _("bad reserved block ratio - %s"),
1868                                         optarg);
1869                                 usage();
1870                         }
1871                         m_flag = 1;
1872                         open_flag = EXT2_FLAG_RW;
1873                         break;
1874                 case 'M':
1875                         new_last_mounted = optarg;
1876                         M_flag = 1;
1877                         open_flag = EXT2_FLAG_RW;
1878                         break;
1879                 case 'o':
1880                         if (mntopts_cmd) {
1881                                 com_err(program_name, 0, "%s",
1882                                         _("-o may only be specified once"));
1883                                 usage();
1884                         }
1885                         mntopts_cmd = optarg;
1886                         open_flag = EXT2_FLAG_RW;
1887                         break;
1888                 case 'O':
1889                         if (features_cmd) {
1890                                 com_err(program_name, 0, "%s",
1891                                         _("-O may only be specified once"));
1892                                 usage();
1893                         }
1894                         features_cmd = optarg;
1895                         open_flag = EXT2_FLAG_RW;
1896                         break;
1897                 case 'Q':
1898                         Q_flag = 1;
1899                         ret = parse_quota_opts(optarg, option_handle_function);
1900                         if (ret)
1901                                 exit(1);
1902                         open_flag = EXT2_FLAG_RW;
1903                         break;
1904                 case 'r':
1905                         reserved_blocks = strtoul(optarg, &tmp, 0);
1906                         if (*tmp) {
1907                                 com_err(program_name, 0,
1908                                         _("bad reserved blocks count - %s"),
1909                                         optarg);
1910                                 usage();
1911                         }
1912                         r_flag = 1;
1913                         open_flag = EXT2_FLAG_RW;
1914                         break;
1915                 case 's': /* Deprecated */
1916                         s_flag = atoi(optarg);
1917                         open_flag = EXT2_FLAG_RW;
1918                         break;
1919                 case 'T':
1920                         T_flag = 1;
1921                         last_check_time = parse_time(optarg);
1922                         open_flag = EXT2_FLAG_RW;
1923                         break;
1924                 case 'u':
1925                                 resuid = strtoul(optarg, &tmp, 0);
1926                                 if (*tmp) {
1927                                         pw = getpwnam(optarg);
1928                                         if (pw == NULL)
1929                                                 tmp = optarg;
1930                                         else {
1931                                                 resuid = pw->pw_uid;
1932                                                 *tmp = 0;
1933                                         }
1934                                 }
1935                                 if (*tmp) {
1936                                         com_err(program_name, 0,
1937                                                 _("bad uid/user name - %s"),
1938                                                 optarg);
1939                                         usage();
1940                                 }
1941                                 u_flag = 1;
1942                                 open_flag = EXT2_FLAG_RW;
1943                                 break;
1944                 case 'U':
1945                         new_UUID = optarg;
1946                         U_flag = 1;
1947                         open_flag = EXT2_FLAG_RW |
1948                                 EXT2_FLAG_JOURNAL_DEV_OK;
1949                         break;
1950                 case 'I':
1951                         new_inode_size = strtoul(optarg, &tmp, 0);
1952                         if (*tmp) {
1953                                 com_err(program_name, 0,
1954                                         _("bad inode size - %s"),
1955                                         optarg);
1956                                 usage();
1957                         }
1958                         if (!((new_inode_size &
1959                                (new_inode_size - 1)) == 0)) {
1960                                 com_err(program_name, 0,
1961                                         _("Inode size must be a "
1962                                           "power of two- %s"),
1963                                         optarg);
1964                                 usage();
1965                         }
1966                         open_flag = EXT2_FLAG_RW;
1967                         I_flag = 1;
1968                         break;
1969                 case 'z':
1970                         undo_file = optarg;
1971                         break;
1972                 default:
1973                         usage();
1974                 }
1975         if (optind < argc - 1 || optind == argc)
1976                 usage();
1977         if (!open_flag && !l_flag)
1978                 usage();
1979         io_options = strchr(argv[optind], '?');
1980         if (io_options)
1981                 *io_options++ = 0;
1982         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1983         if (!device_name) {
1984                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1985                         argv[optind]);
1986                 exit(1);
1987         }
1988 }
1989
1990 #ifdef CONFIG_BUILD_FINDFS
1991 void do_findfs(int argc, char **argv)
1992 {
1993         char    *dev;
1994
1995         if ((argc != 2) ||
1996             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1997                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1998                 exit(2);
1999         }
2000         dev = blkid_get_devname(NULL, argv[1], NULL);
2001         if (!dev) {
2002                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2003                         argv[1]);
2004                 exit(1);
2005         }
2006         puts(dev);
2007         exit(0);
2008 }
2009 #endif
2010
2011 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2012 {
2013         char    *buf, *token, *next, *p, *arg;
2014         int     len, hash_alg;
2015         int     r_usage = 0;
2016
2017         len = strlen(opts);
2018         buf = malloc(len+1);
2019         if (!buf) {
2020                 fprintf(stderr, "%s",
2021                         _("Couldn't allocate memory to parse options!\n"));
2022                 return 1;
2023         }
2024         strcpy(buf, opts);
2025         for (token = buf; token && *token; token = next) {
2026                 p = strchr(token, ',');
2027                 next = 0;
2028                 if (p) {
2029                         *p = 0;
2030                         next = p+1;
2031                 }
2032                 arg = strchr(token, '=');
2033                 if (arg) {
2034                         *arg = 0;
2035                         arg++;
2036                 }
2037                 if (strcmp(token, "clear-mmp") == 0 ||
2038                     strcmp(token, "clear_mmp") == 0) {
2039                         clear_mmp = 1;
2040                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2041                         unsigned long intv;
2042                         if (!arg) {
2043                                 r_usage++;
2044                                 continue;
2045                         }
2046                         intv = strtoul(arg, &p, 0);
2047                         if (*p) {
2048                                 fprintf(stderr,
2049                                         _("Invalid mmp_update_interval: %s\n"),
2050                                         arg);
2051                                 r_usage++;
2052                                 continue;
2053                         }
2054                         if (intv == 0) {
2055                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2056                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2057                                 fprintf(stderr,
2058                                         _("mmp_update_interval too big: %lu\n"),
2059                                         intv);
2060                                 r_usage++;
2061                                 continue;
2062                         }
2063                         printf(P_("Setting multiple mount protection update "
2064                                   "interval to %lu second\n",
2065                                   "Setting multiple mount protection update "
2066                                   "interval to %lu seconds\n", intv),
2067                                intv);
2068                         fs->super->s_mmp_update_interval = intv;
2069                         ext2fs_mark_super_dirty(fs);
2070                 } else if (!strcmp(token, "force_fsck")) {
2071                         fs->super->s_state |= EXT2_ERROR_FS;
2072                         printf(_("Setting filesystem error flag to force fsck.\n"));
2073                         ext2fs_mark_super_dirty(fs);
2074                 } else if (!strcmp(token, "test_fs")) {
2075                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2076                         printf("Setting test filesystem flag\n");
2077                         ext2fs_mark_super_dirty(fs);
2078                 } else if (!strcmp(token, "^test_fs")) {
2079                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2080                         printf("Clearing test filesystem flag\n");
2081                         ext2fs_mark_super_dirty(fs);
2082                 } else if (strcmp(token, "stride") == 0) {
2083                         if (!arg) {
2084                                 r_usage++;
2085                                 continue;
2086                         }
2087                         stride = strtoul(arg, &p, 0);
2088                         if (*p) {
2089                                 fprintf(stderr,
2090                                         _("Invalid RAID stride: %s\n"),
2091                                         arg);
2092                                 r_usage++;
2093                                 continue;
2094                         }
2095                         stride_set = 1;
2096                 } else if (strcmp(token, "stripe-width") == 0 ||
2097                            strcmp(token, "stripe_width") == 0) {
2098                         if (!arg) {
2099                                 r_usage++;
2100                                 continue;
2101                         }
2102                         stripe_width = strtoul(arg, &p, 0);
2103                         if (*p) {
2104                                 fprintf(stderr,
2105                                         _("Invalid RAID stripe-width: %s\n"),
2106                                         arg);
2107                                 r_usage++;
2108                                 continue;
2109                         }
2110                         stripe_width_set = 1;
2111                 } else if (strcmp(token, "hash_alg") == 0 ||
2112                            strcmp(token, "hash-alg") == 0) {
2113                         if (!arg) {
2114                                 r_usage++;
2115                                 continue;
2116                         }
2117                         hash_alg = e2p_string2hash(arg);
2118                         if (hash_alg < 0) {
2119                                 fprintf(stderr,
2120                                         _("Invalid hash algorithm: %s\n"),
2121                                         arg);
2122                                 r_usage++;
2123                                 continue;
2124                         }
2125                         fs->super->s_def_hash_version = hash_alg;
2126                         printf(_("Setting default hash algorithm "
2127                                  "to %s (%d)\n"),
2128                                arg, hash_alg);
2129                         ext2fs_mark_super_dirty(fs);
2130                 } else if (!strcmp(token, "mount_opts")) {
2131                         if (!arg) {
2132                                 r_usage++;
2133                                 continue;
2134                         }
2135                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2136                                 fprintf(stderr,
2137                                         "Extended mount options too long\n");
2138                                 continue;
2139                         }
2140                         ext_mount_opts = strdup(arg);
2141                 } else
2142                         r_usage++;
2143         }
2144         if (r_usage) {
2145                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2146                         "Extended options are separated by commas, "
2147                         "and may take an argument which\n"
2148                         "\tis set off by an equals ('=') sign.\n\n"
2149                         "Valid extended options are:\n"
2150                         "\tclear_mmp\n"
2151                         "\thash_alg=<hash algorithm>\n"
2152                         "\tmount_opts=<extended default mount options>\n"
2153                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2154                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2155                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2156                         "\tforce_fsck\n"
2157                         "\ttest_fs\n"
2158                         "\t^test_fs\n"));
2159                 free(buf);
2160                 return 1;
2161         }
2162         free(buf);
2163
2164         return 0;
2165 }
2166
2167 /*
2168  * Fill in the block bitmap bmap with the information regarding the
2169  * blocks to be moved
2170  */
2171 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2172                             ext2fs_block_bitmap bmap)
2173 {
2174         dgrp_t i;
2175         int retval;
2176         ext2_badblocks_list bb_list = 0;
2177         blk64_t j, needed_blocks = 0;
2178         blk64_t start_blk, end_blk;
2179
2180         retval = ext2fs_read_bb_inode(fs, &bb_list);
2181         if (retval)
2182                 return retval;
2183
2184         for (i = 0; i < fs->group_desc_count; i++) {
2185                 start_blk = ext2fs_inode_table_loc(fs, i) +
2186                                         fs->inode_blocks_per_group;
2187
2188                 end_blk = ext2fs_inode_table_loc(fs, i) +
2189                                         new_ino_blks_per_grp;
2190
2191                 for (j = start_blk; j < end_blk; j++) {
2192                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2193                                 /*
2194                                  * IF the block is a bad block we fail
2195                                  */
2196                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2197                                         ext2fs_badblocks_list_free(bb_list);
2198                                         return ENOSPC;
2199                                 }
2200
2201                                 ext2fs_mark_block_bitmap2(bmap, j);
2202                         } else {
2203                                 /*
2204                                  * We are going to use this block for
2205                                  * inode table. So mark them used.
2206                                  */
2207                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2208                         }
2209                 }
2210                 needed_blocks += end_blk - start_blk;
2211         }
2212
2213         ext2fs_badblocks_list_free(bb_list);
2214         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2215                 return ENOSPC;
2216
2217         return 0;
2218 }
2219
2220 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2221 {
2222         dgrp_t group;
2223         group = ext2fs_group_of_blk2(fs, blk);
2224         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2225                 return 1;
2226         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2227                 return 1;
2228         return 0;
2229 }
2230
2231 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2232 {
2233         blk64_t start_blk, end_blk;
2234         start_blk = fs->super->s_first_data_block +
2235                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2236         /*
2237          * We cannot get new block beyond end_blk for for the last block group
2238          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2239          */
2240         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2241         if (blk >= start_blk && blk <= end_blk)
2242                 return 1;
2243         return 0;
2244 }
2245
2246 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2247 {
2248
2249         char *buf;
2250         dgrp_t group = 0;
2251         errcode_t retval;
2252         int meta_data = 0;
2253         blk64_t blk, new_blk, goal;
2254         struct blk_move *bmv;
2255
2256         retval = ext2fs_get_mem(fs->blocksize, &buf);
2257         if (retval)
2258                 return retval;
2259
2260         for (new_blk = blk = fs->super->s_first_data_block;
2261              blk < ext2fs_blocks_count(fs->super); blk++) {
2262                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2263                         continue;
2264
2265                 if (ext2fs_is_meta_block(fs, blk)) {
2266                         /*
2267                          * If the block is mapping a fs meta data block
2268                          * like group desc/block bitmap/inode bitmap. We
2269                          * should find a block in the same group and fix
2270                          * the respective fs metadata pointers. Otherwise
2271                          * fail
2272                          */
2273                         group = ext2fs_group_of_blk2(fs, blk);
2274                         goal = ext2fs_group_first_block2(fs, group);
2275                         meta_data = 1;
2276
2277                 } else {
2278                         goal = new_blk;
2279                 }
2280                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2281                 if (retval)
2282                         goto err_out;
2283
2284                 /* new fs meta data block should be in the same group */
2285                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2286                         retval = ENOSPC;
2287                         goto err_out;
2288                 }
2289
2290                 /* Mark this block as allocated */
2291                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2292
2293                 /* Add it to block move list */
2294                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2295                 if (retval)
2296                         goto err_out;
2297
2298                 bmv->old_loc = blk;
2299                 bmv->new_loc = new_blk;
2300
2301                 list_add(&(bmv->list), &blk_move_list);
2302
2303                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2304                 if (retval)
2305                         goto err_out;
2306
2307                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2308                 if (retval)
2309                         goto err_out;
2310         }
2311
2312 err_out:
2313         ext2fs_free_mem(&buf);
2314         return retval;
2315 }
2316
2317 static blk64_t translate_block(blk64_t blk)
2318 {
2319         struct list_head *entry;
2320         struct blk_move *bmv;
2321
2322         list_for_each(entry, &blk_move_list) {
2323                 bmv = list_entry(entry, struct blk_move, list);
2324                 if (bmv->old_loc == blk)
2325                         return bmv->new_loc;
2326         }
2327
2328         return 0;
2329 }
2330
2331 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2332                          blk64_t *block_nr,
2333                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2334                          blk64_t ref_block EXT2FS_ATTR((unused)),
2335                          int ref_offset EXT2FS_ATTR((unused)),
2336                          void *priv_data)
2337 {
2338         int ret = 0;
2339         blk64_t new_blk;
2340         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2341
2342         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2343                 return 0;
2344         new_blk = translate_block(*block_nr);
2345         if (new_blk) {
2346                 *block_nr = new_blk;
2347                 /*
2348                  * This will force the ext2fs_write_inode in the iterator
2349                  */
2350                 ret |= BLOCK_CHANGED;
2351         }
2352
2353         return ret;
2354 }
2355
2356 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2357 {
2358         errcode_t retval = 0;
2359         ext2_ino_t ino;
2360         blk64_t blk;
2361         char *block_buf = 0;
2362         struct ext2_inode inode;
2363         ext2_inode_scan scan = NULL;
2364
2365         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2366         if (retval)
2367                 return retval;
2368
2369         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2370         if (retval)
2371                 goto err_out;
2372
2373         while (1) {
2374                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2375                 if (retval)
2376                         goto err_out;
2377
2378                 if (!ino)
2379                         break;
2380
2381                 if (inode.i_links_count == 0)
2382                         continue; /* inode not in use */
2383
2384                 /* FIXME!!
2385                  * If we end up modifying the journal inode
2386                  * the sb->s_jnl_blocks will differ. But a
2387                  * subsequent e2fsck fixes that.
2388                  * Do we need to fix this ??
2389                  */
2390
2391                 if (ext2fs_file_acl_block(fs, &inode) &&
2392                     ext2fs_test_block_bitmap2(bmap,
2393                                         ext2fs_file_acl_block(fs, &inode))) {
2394                         blk = translate_block(ext2fs_file_acl_block(fs,
2395                                                                     &inode));
2396                         if (!blk)
2397                                 continue;
2398
2399                         ext2fs_file_acl_block_set(fs, &inode, blk);
2400
2401                         /*
2402                          * Write the inode to disk so that inode table
2403                          * resizing can work
2404                          */
2405                         retval = ext2fs_write_inode(fs, ino, &inode);
2406                         if (retval)
2407                                 goto err_out;
2408                 }
2409
2410                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2411                         continue;
2412
2413                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2414                                                process_block, bmap);
2415                 if (retval)
2416                         goto err_out;
2417
2418         }
2419
2420 err_out:
2421         ext2fs_free_mem(&block_buf);
2422         ext2fs_close_inode_scan(scan);
2423
2424         return retval;
2425 }
2426
2427 /*
2428  * We need to scan for inode and block bitmaps that may need to be
2429  * moved.  This can take place if the filesystem was formatted for
2430  * RAID arrays using the mke2fs's extended option "stride".
2431  */
2432 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2433 {
2434         dgrp_t i;
2435         blk64_t blk, new_blk;
2436
2437         for (i = 0; i < fs->group_desc_count; i++) {
2438                 blk = ext2fs_block_bitmap_loc(fs, i);
2439                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2440                         new_blk = translate_block(blk);
2441                         if (!new_blk)
2442                                 continue;
2443                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2444                 }
2445
2446                 blk = ext2fs_inode_bitmap_loc(fs, i);
2447                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2448                         new_blk = translate_block(blk);
2449                         if (!new_blk)
2450                                 continue;
2451                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2452                 }
2453         }
2454         return 0;
2455 }
2456
2457 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2458 {
2459         dgrp_t i;
2460         blk64_t blk;
2461         errcode_t retval;
2462         int new_ino_blks_per_grp;
2463         unsigned int j;
2464         char *old_itable = NULL, *new_itable = NULL;
2465         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2466         unsigned long old_ino_size;
2467         int old_itable_size, new_itable_size;
2468
2469         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2470         old_ino_size = EXT2_INODE_SIZE(fs->super);
2471
2472         new_ino_blks_per_grp = ext2fs_div_ceil(
2473                                         EXT2_INODES_PER_GROUP(fs->super) *
2474                                         new_ino_size,
2475                                         fs->blocksize);
2476
2477         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2478
2479         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2480         if (retval)
2481                 return retval;
2482
2483         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2484         if (retval)
2485                 goto err_out;
2486
2487         tmp_old_itable = old_itable;
2488         tmp_new_itable = new_itable;
2489
2490         for (i = 0; i < fs->group_desc_count; i++) {
2491                 blk = ext2fs_inode_table_loc(fs, i);
2492                 retval = io_channel_read_blk64(fs->io, blk,
2493                                 fs->inode_blocks_per_group, old_itable);
2494                 if (retval)
2495                         goto err_out;
2496
2497                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2498                         memcpy(new_itable, old_itable, old_ino_size);
2499
2500                         memset(new_itable+old_ino_size, 0,
2501                                         new_ino_size - old_ino_size);
2502
2503                         new_itable += new_ino_size;
2504                         old_itable += old_ino_size;
2505                 }
2506
2507                 /* reset the pointer */
2508                 old_itable = tmp_old_itable;
2509                 new_itable = tmp_new_itable;
2510
2511                 retval = io_channel_write_blk64(fs->io, blk,
2512                                         new_ino_blks_per_grp, new_itable);
2513                 if (retval)
2514                         goto err_out;
2515         }
2516
2517         /* Update the meta data */
2518         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2519         ext2fs_free_inode_cache(fs->icache);
2520         fs->icache = 0;
2521         fs->super->s_inode_size = new_ino_size;
2522
2523 err_out:
2524         if (old_itable)
2525                 ext2fs_free_mem(&old_itable);
2526
2527         if (new_itable)
2528                 ext2fs_free_mem(&new_itable);
2529
2530         return retval;
2531 }
2532
2533 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2534 {
2535         blk64_t         blk;
2536         ext2_ino_t      ino;
2537         unsigned int    group = 0;
2538         unsigned int    count = 0;
2539         int             total_free = 0;
2540         int             group_free = 0;
2541
2542         /*
2543          * First calculate the block statistics
2544          */
2545         for (blk = fs->super->s_first_data_block;
2546              blk < ext2fs_blocks_count(fs->super); blk++) {
2547                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2548                         group_free++;
2549                         total_free++;
2550                 }
2551                 count++;
2552                 if ((count == fs->super->s_blocks_per_group) ||
2553                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2554                         ext2fs_bg_free_blocks_count_set(fs, group++,
2555                                                         group_free);
2556                         count = 0;
2557                         group_free = 0;
2558                 }
2559         }
2560         total_free = EXT2FS_C2B(fs, total_free);
2561         ext2fs_free_blocks_count_set(fs->super, total_free);
2562
2563         /*
2564          * Next, calculate the inode statistics
2565          */
2566         group_free = 0;
2567         total_free = 0;
2568         count = 0;
2569         group = 0;
2570
2571         /* Protect loop from wrap-around if s_inodes_count maxed */
2572         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2573                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2574                         group_free++;
2575                         total_free++;
2576                 }
2577                 count++;
2578                 if ((count == fs->super->s_inodes_per_group) ||
2579                     (ino == fs->super->s_inodes_count)) {
2580                         ext2fs_bg_free_inodes_count_set(fs, group++,
2581                                                         group_free);
2582                         count = 0;
2583                         group_free = 0;
2584                 }
2585         }
2586         fs->super->s_free_inodes_count = total_free;
2587         ext2fs_mark_super_dirty(fs);
2588         return 0;
2589 }
2590
2591 #define list_for_each_safe(pos, pnext, head) \
2592         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2593              pos = pnext, pnext = pos->next)
2594
2595 static void free_blk_move_list(void)
2596 {
2597         struct list_head *entry, *tmp;
2598         struct blk_move *bmv;
2599
2600         list_for_each_safe(entry, tmp, &blk_move_list) {
2601                 bmv = list_entry(entry, struct blk_move, list);
2602                 list_del(entry);
2603                 ext2fs_free_mem(&bmv);
2604         }
2605         return;
2606 }
2607
2608 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2609 {
2610         errcode_t retval;
2611         int new_ino_blks_per_grp;
2612         ext2fs_block_bitmap bmap;
2613
2614         retval = ext2fs_read_inode_bitmap(fs);
2615         if (retval) {
2616                 fputs(_("Failed to read inode bitmap\n"), stderr);
2617                 return retval;
2618         }
2619         retval = ext2fs_read_block_bitmap(fs);
2620         if (retval) {
2621                 fputs(_("Failed to read block bitmap\n"), stderr);
2622                 return retval;
2623         }
2624         INIT_LIST_HEAD(&blk_move_list);
2625
2626
2627         new_ino_blks_per_grp = ext2fs_div_ceil(
2628                                         EXT2_INODES_PER_GROUP(fs->super)*
2629                                         new_size,
2630                                         fs->blocksize);
2631
2632         /* We may change the file system.
2633          * Mark the file system as invalid so that
2634          * the user is prompted to run fsck.
2635          */
2636         fs->super->s_state &= ~EXT2_VALID_FS;
2637
2638         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2639                                                 &bmap);
2640         if (retval) {
2641                 fputs(_("Failed to allocate block bitmap when "
2642                                 "increasing inode size\n"), stderr);
2643                 return retval;
2644         }
2645         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2646         if (retval) {
2647                 fputs(_("Not enough space to increase inode size \n"), stderr);
2648                 goto err_out;
2649         }
2650         retval = move_block(fs, bmap);
2651         if (retval) {
2652                 fputs(_("Failed to relocate blocks during inode resize \n"),
2653                       stderr);
2654                 goto err_out;
2655         }
2656         retval = inode_scan_and_fix(fs, bmap);
2657         if (retval)
2658                 goto err_out_undo;
2659
2660         retval = group_desc_scan_and_fix(fs, bmap);
2661         if (retval)
2662                 goto err_out_undo;
2663
2664         retval = expand_inode_table(fs, new_size);
2665         if (retval)
2666                 goto err_out_undo;
2667
2668         ext2fs_calculate_summary_stats(fs);
2669
2670         fs->super->s_state |= EXT2_VALID_FS;
2671         /* mark super block and block bitmap as dirty */
2672         ext2fs_mark_super_dirty(fs);
2673         ext2fs_mark_bb_dirty(fs);
2674
2675 err_out:
2676         free_blk_move_list();
2677         ext2fs_free_block_bitmap(bmap);
2678
2679         return retval;
2680
2681 err_out_undo:
2682         free_blk_move_list();
2683         ext2fs_free_block_bitmap(bmap);
2684         fputs(_("Error in resizing the inode size.\n"
2685                         "Run e2undo to undo the "
2686                         "file system changes. \n"), stderr);
2687
2688         return retval;
2689 }
2690
2691 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2692 {
2693         errcode_t retval = 0;
2694         const char *tdb_dir;
2695         char *tdb_file = NULL;
2696         char *dev_name, *tmp_name;
2697
2698         /* (re)open a specific undo file */
2699         if (undo_file && undo_file[0] != 0) {
2700                 retval = set_undo_io_backing_manager(*io_ptr);
2701                 if (retval)
2702                         goto err;
2703                 *io_ptr = undo_io_manager;
2704                 retval = set_undo_io_backup_file(undo_file);
2705                 if (retval)
2706                         goto err;
2707                 printf(_("Overwriting existing filesystem; this can be undone "
2708                          "using the command:\n"
2709                          "    e2undo %s %s\n\n"),
2710                          undo_file, name);
2711                 return retval;
2712         }
2713
2714         /*
2715          * Configuration via a conf file would be
2716          * nice
2717          */
2718         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2719         if (!tdb_dir)
2720                 tdb_dir = "/var/lib/e2fsprogs";
2721
2722         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2723             access(tdb_dir, W_OK))
2724                 return 0;
2725
2726         tmp_name = strdup(name);
2727         if (!tmp_name)
2728                 goto errout;
2729         dev_name = basename(tmp_name);
2730         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2731         if (!tdb_file) {
2732                 free(tmp_name);
2733                 goto errout;
2734         }
2735         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2736         free(tmp_name);
2737
2738         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2739                 retval = errno;
2740                 com_err(program_name, retval,
2741                         _("while trying to delete %s"), tdb_file);
2742                 goto errout;
2743         }
2744
2745         retval = set_undo_io_backing_manager(*io_ptr);
2746         if (retval)
2747                 goto errout;
2748         *io_ptr = undo_io_manager;
2749         retval = set_undo_io_backup_file(tdb_file);
2750         if (retval)
2751                 goto errout;
2752         printf(_("Overwriting existing filesystem; this can be undone "
2753                  "using the command:\n"
2754                  "    e2undo %s %s\n\n"),
2755                  tdb_file, name);
2756
2757         free(tdb_file);
2758         return 0;
2759 errout:
2760         free(tdb_file);
2761 err:
2762         com_err("tune2fs", retval, "while trying to setup undo file\n");
2763         return retval;
2764 }
2765
2766 static int
2767 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2768 {
2769         int retval, nr_users, start;
2770         journal_superblock_t *jsb;
2771         ext2_filsys jfs;
2772         __u8 *j_uuid;
2773         char *journal_path;
2774         char uuid[UUID_STR_SIZE];
2775         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2776
2777         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2778                 return 0;
2779
2780         uuid_unparse(sb->s_journal_uuid, uuid);
2781         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2782         if (!journal_path)
2783                 return 0;
2784
2785         retval = ext2fs_open2(journal_path, io_options,
2786                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2787                               0, 0, unix_io_manager, &jfs);
2788         if (retval) {
2789                 com_err(program_name, retval,
2790                         _("while trying to open %s"),
2791                         journal_path);
2792                 return retval;
2793         }
2794
2795         retval = get_journal_sb(jfs, buf);
2796         if (retval != 0) {
2797                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2798                         fprintf(stderr, _("%s is not a journal device.\n"),
2799                                 journal_path);
2800                 return retval;
2801         }
2802
2803         jsb = (journal_superblock_t *) buf;
2804         /* Find the filesystem UUID */
2805         nr_users = ntohl(jsb->s_nr_users);
2806         if (nr_users > JFS_USERS_MAX) {
2807                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2808                                  "is too high (%d).\n"), nr_users);
2809                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2810         }
2811
2812         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2813         if (j_uuid == NULL) {
2814                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2815                       stderr);
2816                 return EXT2_ET_LOAD_EXT_JOURNAL;
2817         }
2818
2819         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2820
2821         start = ext2fs_journal_sb_start(jfs->blocksize);
2822         /* Write back the journal superblock */
2823         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2824         if (retval != 0) {
2825                 com_err(program_name, retval,
2826                         "while writing journal superblock.");
2827                 return retval;
2828         }
2829
2830         ext2fs_close(jfs);
2831
2832         return 0;
2833 }
2834
2835 #ifndef BUILD_AS_LIB
2836 int main(int argc, char **argv)
2837 #else
2838 int tune2fs_main(int argc, char **argv)
2839 #endif  /* BUILD_AS_LIB */
2840 {
2841         errcode_t retval;
2842         ext2_filsys fs;
2843         struct ext2_super_block *sb;
2844         io_manager io_ptr, io_ptr_orig = NULL;
2845         int rc = 0;
2846         char default_undo_file[1] = { 0 };
2847
2848 #ifdef ENABLE_NLS
2849         setlocale(LC_MESSAGES, "");
2850         setlocale(LC_CTYPE, "");
2851         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2852         textdomain(NLS_CAT_NAME);
2853         set_com_err_gettext(gettext);
2854 #endif
2855         if (argc && *argv)
2856                 program_name = *argv;
2857         add_error_table(&et_ext2_error_table);
2858
2859 #ifdef CONFIG_BUILD_FINDFS
2860         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2861                 do_findfs(argc, argv);
2862 #endif
2863         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2864                 parse_e2label_options(argc, argv);
2865         else
2866                 parse_tune2fs_options(argc, argv);
2867
2868 #ifdef CONFIG_TESTIO_DEBUG
2869         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2870                 io_ptr = test_io_manager;
2871                 test_io_backing_manager = unix_io_manager;
2872         } else
2873 #endif
2874                 io_ptr = unix_io_manager;
2875
2876 retry_open:
2877         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2878                 open_flag |= EXT2_FLAG_SKIP_MMP;
2879
2880         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2881
2882         /* keep the filesystem struct around to dump MMP data */
2883         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2884
2885         retval = ext2fs_open2(device_name, io_options, open_flag,
2886                               0, 0, io_ptr, &fs);
2887         if (retval) {
2888                 com_err(program_name, retval,
2889                         _("while trying to open %s"),
2890                         device_name);
2891                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2892                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2893                         dump_mmp_msg(fs->mmp_buf,
2894                                      _("If you are sure the filesystem "
2895                                        "is not in use on any node, run:\n"
2896                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2897                 else if (retval == EXT2_ET_MMP_FAILED)
2898                         dump_mmp_msg(fs->mmp_buf, NULL);
2899                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2900                         fprintf(stderr,
2901                                 _("MMP block magic is bad. Try to fix it by "
2902                                   "running:\n'e2fsck -f %s'\n"), device_name);
2903                 else if (retval == EXT2_ET_BAD_MAGIC)
2904                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2905                 else if (retval != EXT2_ET_MMP_FAILED)
2906                         fprintf(stderr, "%s",
2907                              _("Couldn't find valid filesystem superblock.\n"));
2908
2909                 ext2fs_free(fs);
2910                 exit(1);
2911         }
2912         if (ext2fs_has_feature_journal_dev(fs->super)) {
2913                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2914                 ext2fs_free(fs);
2915                 exit(1);
2916         }
2917         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2918
2919         if (I_flag) {
2920                 /*
2921                  * Check the inode size is right so we can issue an
2922                  * error message and bail before setting up the tdb
2923                  * file.
2924                  */
2925                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2926                         fprintf(stderr, _("The inode size is already %lu\n"),
2927                                 new_inode_size);
2928                         rc = 1;
2929                         goto closefs;
2930                 }
2931                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2932                         fprintf(stderr, "%s",
2933                                 _("Shrinking inode size is not supported\n"));
2934                         rc = 1;
2935                         goto closefs;
2936                 }
2937                 if (new_inode_size > fs->blocksize) {
2938                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2939                                 new_inode_size, fs->blocksize);
2940                         rc = 1;
2941                         goto closefs;
2942                 }
2943                 check_fsck_needed(fs,
2944                         _("Resizing inodes could take some time."));
2945                 /*
2946                  * If inode resize is requested use the
2947                  * Undo I/O manager
2948                  */
2949                 undo_file = default_undo_file;
2950         }
2951
2952         /* Set up an undo file */
2953         if (undo_file && io_ptr_orig == NULL) {
2954                 io_ptr_orig = io_ptr;
2955                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2956                 if (retval) {
2957                         rc = 1;
2958                         goto closefs;
2959                 }
2960                 if (io_ptr != io_ptr_orig) {
2961                         ext2fs_close_free(&fs);
2962                         goto retry_open;
2963                 }
2964         }
2965
2966         sb = fs->super;
2967         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2968
2969         if (print_label) {
2970                 /* For e2label emulation */
2971                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2972                        sb->s_volume_name);
2973                 remove_error_table(&et_ext2_error_table);
2974                 goto closefs;
2975         }
2976
2977         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2978         if (retval) {
2979                 com_err("ext2fs_check_if_mount", retval,
2980                         _("while determining whether %s is mounted."),
2981                         device_name);
2982                 rc = 1;
2983                 goto closefs;
2984         }
2985
2986 #ifdef NO_RECOVERY
2987         /* Warn if file system needs recovery and it is opened for writing. */
2988         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
2989             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
2990             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
2991                 fprintf(stderr,
2992 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
2993   "\te2fsck -E journal_only %s\n\n"
2994   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
2995   "by journal recovery.\n"), device_name);
2996         }
2997 #else
2998         /* Recover the journal if possible. */
2999         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3000             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3001                 errcode_t err;
3002
3003                 printf(_("Recovering journal.\n"));
3004                 err = ext2fs_run_ext3_journal(&fs);
3005                 if (err) {
3006                         com_err("tune2fs", err, "while recovering journal.\n");
3007                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3008                         if (fs)
3009                                 ext2fs_close_free(&fs);
3010                         exit(1);
3011                 }
3012                 sb = fs->super;
3013         }
3014 #endif
3015
3016         /* Normally we only need to write out the superblock */
3017         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3018
3019         if (c_flag) {
3020                 sb->s_max_mnt_count = max_mount_count;
3021                 ext2fs_mark_super_dirty(fs);
3022                 printf(_("Setting maximal mount count to %d\n"),
3023                        max_mount_count);
3024         }
3025         if (C_flag) {
3026                 sb->s_mnt_count = mount_count;
3027                 ext2fs_mark_super_dirty(fs);
3028                 printf(_("Setting current mount count to %d\n"), mount_count);
3029         }
3030         if (e_flag) {
3031                 sb->s_errors = errors;
3032                 ext2fs_mark_super_dirty(fs);
3033                 printf(_("Setting error behavior to %d\n"), errors);
3034         }
3035         if (g_flag) {
3036                 sb->s_def_resgid = resgid;
3037                 ext2fs_mark_super_dirty(fs);
3038                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3039         }
3040         if (i_flag) {
3041                 if ((unsigned long long)interval >= (1ULL << 32)) {
3042                         com_err(program_name, 0,
3043                                 _("interval between checks is too big (%lu)"),
3044                                 interval);
3045                         rc = 1;
3046                         goto closefs;
3047                 }
3048                 sb->s_checkinterval = interval;
3049                 ext2fs_mark_super_dirty(fs);
3050                 printf(_("Setting interval between checks to %lu seconds\n"),
3051                        interval);
3052         }
3053         if (m_flag) {
3054                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3055                                           ext2fs_blocks_count(sb) / 100.0);
3056                 ext2fs_mark_super_dirty(fs);
3057                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3058                         reserved_ratio, ext2fs_r_blocks_count(sb));
3059         }
3060         if (r_flag) {
3061                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3062                         com_err(program_name, 0,
3063                                 _("reserved blocks count is too big (%llu)"),
3064                                 reserved_blocks);
3065                         rc = 1;
3066                         goto closefs;
3067                 }
3068                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3069                 ext2fs_mark_super_dirty(fs);
3070                 printf(_("Setting reserved blocks count to %llu\n"),
3071                        reserved_blocks);
3072         }
3073         if (s_flag == 1) {
3074                 if (ext2fs_has_feature_sparse_super(sb)) {
3075                         fputs(_("\nThe filesystem already has sparse "
3076                                 "superblocks.\n"), stderr);
3077                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3078                         fputs(_("\nSetting the sparse superblock flag not "
3079                                 "supported\nfor filesystems with "
3080                                 "the meta_bg feature enabled.\n"),
3081                                 stderr);
3082                         rc = 1;
3083                         goto closefs;
3084                 } else {
3085                         ext2fs_set_feature_sparse_super(sb);
3086                         sb->s_state &= ~EXT2_VALID_FS;
3087                         ext2fs_mark_super_dirty(fs);
3088                         printf(_("\nSparse superblock flag set.  %s"),
3089                                _(please_fsck));
3090                 }
3091         }
3092         if (s_flag == 0) {
3093                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3094                       stderr);
3095                 rc = 1;
3096                 goto closefs;
3097         }
3098         if (T_flag) {
3099                 sb->s_lastcheck = last_check_time;
3100                 ext2fs_mark_super_dirty(fs);
3101                 printf(_("Setting time filesystem last checked to %s\n"),
3102                        ctime(&last_check_time));
3103         }
3104         if (u_flag) {
3105                 sb->s_def_resuid = resuid;
3106                 ext2fs_mark_super_dirty(fs);
3107                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3108         }
3109         if (L_flag) {
3110                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3111                         fputs(_("Warning: label too long, truncating.\n"),
3112                               stderr);
3113                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3114                 strncpy(sb->s_volume_name, new_label,
3115                         sizeof(sb->s_volume_name));
3116                 ext2fs_mark_super_dirty(fs);
3117         }
3118         if (M_flag) {
3119                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3120                 strncpy(sb->s_last_mounted, new_last_mounted,
3121                         sizeof(sb->s_last_mounted));
3122                 ext2fs_mark_super_dirty(fs);
3123         }
3124         if (mntopts_cmd) {
3125                 rc = update_mntopts(fs, mntopts_cmd);
3126                 if (rc)
3127                         goto closefs;
3128         }
3129         if (features_cmd) {
3130                 rc = update_feature_set(fs, features_cmd);
3131                 if (rc)
3132                         goto closefs;
3133         }
3134         if (extended_cmd) {
3135                 rc = parse_extended_opts(fs, extended_cmd);
3136                 if (rc)
3137                         goto closefs;
3138                 if (clear_mmp && !f_flag) {
3139                         fputs(_("Error in using clear_mmp. "
3140                                 "It must be used with -f\n"),
3141                               stderr);
3142                         goto closefs;
3143                 }
3144         }
3145         if (clear_mmp) {
3146                 rc = ext2fs_mmp_clear(fs);
3147                 goto closefs;
3148         }
3149         if (journal_size || journal_device) {
3150                 rc = add_journal(fs);
3151                 if (rc)
3152                         goto closefs;
3153         }
3154
3155         if (Q_flag) {
3156                 if (mount_flags & EXT2_MF_MOUNTED) {
3157                         fputs(_("The quota feature may only be changed when "
3158                                 "the filesystem is unmounted.\n"), stderr);
3159                         rc = 1;
3160                         goto closefs;
3161                 }
3162                 handle_quota_options(fs);
3163         }
3164
3165         if (U_flag) {
3166                 int set_csum = 0;
3167                 dgrp_t i;
3168                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3169                 __u8 old_uuid[UUID_SIZE];
3170
3171                 if (ext2fs_has_group_desc_csum(fs)) {
3172                         /*
3173                          * Changing the UUID on a metadata_csum FS requires
3174                          * rewriting all metadata, which can race with a
3175                          * mounted fs.  Don't allow that unless we're saving
3176                          * the checksum seed.
3177                          */
3178                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3179                             !ext2fs_has_feature_csum_seed(fs->super) &&
3180                             ext2fs_has_feature_metadata_csum(fs->super)) {
3181                                 fputs(_("The UUID may only be "
3182                                         "changed when the filesystem is "
3183                                         "unmounted.\n"), stderr);
3184                                 fputs(_("If you only use kernels newer than "
3185                                         "v4.4, run 'tune2fs -O "
3186                                         "metadata_csum_seed' and re-run this "
3187                                         "command.\n"), stderr);
3188                                 try_confirm_csum_seed_support();
3189                                 exit(1);
3190                         }
3191                         if (!ext2fs_has_feature_csum_seed(fs->super))
3192                                 check_fsck_needed(fs,
3193                                         _("Setting UUID on a checksummed "
3194                                           "filesystem could take some time."));
3195
3196                         /*
3197                          * Determine if the block group checksums are
3198                          * correct so we know whether or not to set
3199                          * them later on.
3200                          */
3201                         for (i = 0; i < fs->group_desc_count; i++)
3202                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3203                                         break;
3204                         if (i >= fs->group_desc_count)
3205                                 set_csum = 1;
3206                 }
3207
3208                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3209                 if ((strcasecmp(new_UUID, "null") == 0) ||
3210                     (strcasecmp(new_UUID, "clear") == 0)) {
3211                         uuid_clear(sb->s_uuid);
3212                 } else if (strcasecmp(new_UUID, "time") == 0) {
3213                         uuid_generate_time(sb->s_uuid);
3214                 } else if (strcasecmp(new_UUID, "random") == 0) {
3215                         uuid_generate(sb->s_uuid);
3216                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3217                         com_err(program_name, 0, "%s",
3218                                 _("Invalid UUID format\n"));
3219                         rc = 1;
3220                         goto closefs;
3221                 }
3222                 ext2fs_init_csum_seed(fs);
3223                 if (set_csum) {
3224                         for (i = 0; i < fs->group_desc_count; i++)
3225                                 ext2fs_group_desc_csum_set(fs, i);
3226                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3227                 }
3228
3229                 /* If this is a journal dev, we need to copy UUID into jsb */
3230                 if (!(rc = get_journal_sb(fs, buf))) {
3231                         journal_superblock_t *jsb;
3232
3233                         jsb = (journal_superblock_t *) buf;
3234                         fputs(_("Need to update journal superblock.\n"), stdout);
3235                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3236
3237                         /* Writeback the journal superblock */
3238                         if ((rc = io_channel_write_blk64(fs->io,
3239                                 ext2fs_journal_sb_start(fs->blocksize),
3240                                         -SUPERBLOCK_SIZE, buf)))
3241                                 goto closefs;
3242                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3243                         goto closefs;
3244                 else {
3245                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3246
3247                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3248                                 goto closefs;
3249                 }
3250
3251                 ext2fs_mark_super_dirty(fs);
3252                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3253                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3254                      ext2fs_has_feature_ea_inode(fs->super)))
3255                         rewrite_checksums = 1;
3256         }
3257
3258         if (I_flag) {
3259                 if (mount_flags & EXT2_MF_MOUNTED) {
3260                         fputs(_("The inode size may only be "
3261                                 "changed when the filesystem is "
3262                                 "unmounted.\n"), stderr);
3263                         rc = 1;
3264                         goto closefs;
3265                 }
3266                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3267                         fputs(_("Changing the inode size not supported for "
3268                                 "filesystems with the flex_bg\n"
3269                                 "feature enabled.\n"),
3270                               stderr);
3271                         rc = 1;
3272                         goto closefs;
3273                 }
3274                 /*
3275                  * We want to update group descriptor also
3276                  * with the new free inode count
3277                  */
3278                 if (rewrite_checksums)
3279                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3280                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3281                 retval = resize_inode(fs, new_inode_size);
3282                 if (rewrite_checksums)
3283                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3284                 if (retval == 0) {
3285                         printf(_("Setting inode size %lu\n"),
3286                                                         new_inode_size);
3287                         rewrite_checksums = 1;
3288                 } else {
3289                         printf("%s", _("Failed to change inode size\n"));
3290                         rc = 1;
3291                         goto closefs;
3292                 }
3293         }
3294
3295         if (rewrite_checksums)
3296                 rewrite_metadata_checksums(fs);
3297
3298         if (l_flag)
3299                 list_super(sb);
3300         if (stride_set) {
3301                 sb->s_raid_stride = stride;
3302                 ext2fs_mark_super_dirty(fs);
3303                 printf(_("Setting stride size to %d\n"), stride);
3304         }
3305         if (stripe_width_set) {
3306                 sb->s_raid_stripe_width = stripe_width;
3307                 ext2fs_mark_super_dirty(fs);
3308                 printf(_("Setting stripe width to %d\n"), stripe_width);
3309         }
3310         if (ext_mount_opts) {
3311                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3312                         sizeof(fs->super->s_mount_opts));
3313                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3314                 ext2fs_mark_super_dirty(fs);
3315                 printf(_("Setting extended default mount options to '%s'\n"),
3316                        ext_mount_opts);
3317                 free(ext_mount_opts);
3318         }
3319
3320         free(device_name);
3321         remove_error_table(&et_ext2_error_table);
3322
3323 closefs:
3324         if (rc) {
3325                 ext2fs_mmp_stop(fs);
3326 #ifndef BUILD_AS_LIB
3327                 exit(1);
3328 #endif
3329         }
3330
3331         if (feature_64bit)
3332                 convert_64bit(fs, feature_64bit);
3333         return (ext2fs_close_free(&fs) ? 1 : 0);
3334 }