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                 if (mount_flags & EXT2_MF_MOUNTED) {
1312                         fputs(_("Cannot enable uninit_bg on a mounted "
1313                                 "filesystem!\n"), stderr);
1314                         exit(1);
1315                 }
1316
1317                 /* Do not enable uninit_bg when metadata_csum enabled */
1318                 if (ext2fs_has_feature_metadata_csum(fs->super))
1319                         ext2fs_clear_feature_gdt_csum(fs->super);
1320                 else
1321                         enable_uninit_bg(fs);
1322         }
1323
1324         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1325                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1326                 if (mount_flags & EXT2_MF_MOUNTED) {
1327                         fputs(_("Cannot disable uninit_bg on a mounted "
1328                                 "filesystem!\n"), stderr);
1329                         exit(1);
1330                 }
1331
1332                 err = disable_uninit_bg(fs,
1333                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1334                 if (err)
1335                         return 1;
1336         }
1337
1338         /*
1339          * We don't actually toggle 64bit; resize2fs does that.  But this
1340          * must come after the metadata_csum feature_on so that it won't
1341          * complain about the lack of 64bit.
1342          */
1343         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1344                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1345                 if (mount_flags & EXT2_MF_MOUNTED) {
1346                         fprintf(stderr, _("Cannot enable 64-bit mode "
1347                                           "while mounted!\n"));
1348                         exit(1);
1349                 }
1350                 ext2fs_clear_feature_64bit(sb);
1351                 feature_64bit = 1;
1352         }
1353         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1354                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1355                 if (mount_flags & EXT2_MF_MOUNTED) {
1356                         fprintf(stderr, _("Cannot disable 64-bit mode "
1357                                           "while mounted!\n"));
1358                         exit(1);
1359                 }
1360                 ext2fs_set_feature_64bit(sb);
1361                 feature_64bit = -1;
1362         }
1363
1364         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1365                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1366                 /*
1367                  * Set the Q_flag here and handle the quota options in the code
1368                  * below.
1369                  */
1370                 if (!Q_flag) {
1371                         Q_flag = 1;
1372                         /* Enable usr/grp quota by default */
1373                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1374                                 if (qtype != PRJQUOTA)
1375                                         quota_enable[qtype] = QOPT_ENABLE;
1376                                 else
1377                                         quota_enable[qtype] = QOPT_DISABLE;
1378                         }
1379                 }
1380                 ext2fs_clear_feature_quota(sb);
1381         }
1382
1383         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1384                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1385                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1386                         fprintf(stderr, _("Cannot enable project feature; "
1387                                           "inode size too small.\n"));
1388                         exit(1);
1389                 }
1390                 Q_flag = 1;
1391                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1392         }
1393
1394         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1395                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1396                 Q_flag = 1;
1397                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1398         }
1399
1400         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1401                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1402                 /*
1403                  * Set the Q_flag here and handle the quota options in the code
1404                  * below.
1405                  */
1406                 if (Q_flag)
1407                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1408                                 "arguments.\n"), stderr);
1409                 Q_flag = 1;
1410                 /* Disable all quota by default */
1411                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1412                         quota_enable[qtype] = QOPT_DISABLE;
1413         }
1414
1415         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1416                 if (ext2fs_has_feature_casefold(sb)) {
1417                         fputs(_("Cannot enable encrypt feature on filesystems "
1418                                 "with the encoding feature enabled.\n"),
1419                               stderr);
1420                         return 1;
1421                 }
1422                 fs->super->s_encrypt_algos[0] =
1423                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1424                 fs->super->s_encrypt_algos[1] =
1425                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1426         }
1427
1428         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1429                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1430                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1431                         fputs(_("Setting feature 'metadata_csum_seed' "
1432                                 "is only supported\non filesystems with "
1433                                 "the metadata_csum feature enabled.\n"),
1434                                 stderr);
1435                         return 1;
1436                 }
1437                 try_confirm_csum_seed_support();
1438                 fs->super->s_checksum_seed = fs->csum_seed;
1439         }
1440
1441         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1442                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1443                 __le32 uuid_seed;
1444
1445                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1446                                         sizeof(fs->super->s_uuid));
1447                 if (fs->super->s_checksum_seed != uuid_seed) {
1448                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1449                                 fputs(_("UUID has changed since enabling "
1450                 "metadata_csum.  Filesystem must be unmounted "
1451                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1452                                       stderr);
1453                                 return 1;
1454                         }
1455                         check_fsck_needed(fs, _("Recalculating checksums "
1456                                                 "could take some time."));
1457                         rewrite_checksums = 1;
1458                 }
1459         }
1460
1461         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1462             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1463              sb->s_feature_incompat))
1464                 ext2fs_update_dynamic_rev(fs);
1465
1466         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1467                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1468             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1469                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1470             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1471                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1472             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1473                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1474             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1475                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1476                 request_fsck_afterwards(fs);
1477
1478         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1479             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1480             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1481                 ext2fs_mark_super_dirty(fs);
1482
1483         return 0;
1484 }
1485
1486 /*
1487  * Add a journal to the filesystem.
1488  */
1489 static int add_journal(ext2_filsys fs)
1490 {
1491         unsigned long journal_blocks;
1492         errcode_t       retval;
1493         ext2_filsys     jfs;
1494         io_manager      io_ptr;
1495
1496         if (ext2fs_has_feature_journal(fs->super)) {
1497                 fputs(_("The filesystem already has a journal.\n"), stderr);
1498                 goto err;
1499         }
1500         if (journal_device) {
1501                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1502                                         NULL))
1503                         proceed_question(-1);
1504                 check_mount(journal_device, 0, _("journal"));
1505 #ifdef CONFIG_TESTIO_DEBUG
1506                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1507                         io_ptr = test_io_manager;
1508                         test_io_backing_manager = unix_io_manager;
1509                 } else
1510 #endif
1511                         io_ptr = unix_io_manager;
1512                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1513                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1514                                      fs->blocksize, io_ptr, &jfs);
1515                 if (retval) {
1516                         com_err(program_name, retval,
1517                                 _("\n\twhile trying to open journal on %s\n"),
1518                                 journal_device);
1519                         goto err;
1520                 }
1521                 printf(_("Creating journal on device %s: "),
1522                        journal_device);
1523                 fflush(stdout);
1524
1525                 retval = ext2fs_add_journal_device(fs, jfs);
1526                 ext2fs_close_free(&jfs);
1527                 if (retval) {
1528                         com_err(program_name, retval,
1529                                 _("while adding filesystem to journal on %s"),
1530                                 journal_device);
1531                         goto err;
1532                 }
1533                 fputs(_("done\n"), stdout);
1534         } else if (journal_size) {
1535                 fputs(_("Creating journal inode: "), stdout);
1536                 fflush(stdout);
1537                 journal_blocks = figure_journal_size(journal_size, fs);
1538
1539                 if (journal_location_string)
1540                         journal_location =
1541                                 parse_num_blocks2(journal_location_string,
1542                                                   fs->super->s_log_block_size);
1543                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1544                                                    journal_location,
1545                                                    journal_flags);
1546                 if (retval) {
1547                         fprintf(stderr, "\n");
1548                         com_err(program_name, retval, "%s",
1549                                 _("\n\twhile trying to create journal file"));
1550                         return retval;
1551                 } else
1552                         fputs(_("done\n"), stdout);
1553                 /*
1554                  * If the filesystem wasn't mounted, we need to force
1555                  * the block group descriptors out.
1556                  */
1557                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1558                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1559         }
1560         print_check_message(fs->super->s_max_mnt_count,
1561                             fs->super->s_checkinterval);
1562         return 0;
1563
1564 err:
1565         free(journal_device);
1566         return 1;
1567 }
1568
1569 static void handle_quota_options(ext2_filsys fs)
1570 {
1571         errcode_t retval;
1572         quota_ctx_t qctx;
1573         ext2_ino_t qf_ino;
1574         enum quota_type qtype;
1575         unsigned int qtype_bits = 0;
1576         int need_dirty = 0;
1577
1578         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1579                 if (quota_enable[qtype] != 0)
1580                         break;
1581         if (qtype == MAXQUOTAS)
1582                 /* Nothing to do. */
1583                 return;
1584
1585         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1586             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1587                 fprintf(stderr, _("Cannot enable project quota; "
1588                                   "inode size too small.\n"));
1589                 exit(1);
1590         }
1591
1592         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1593                 if (quota_enable[qtype] == QOPT_ENABLE)
1594                         qtype_bits |= 1 << qtype;
1595         }
1596
1597         retval = quota_init_context(&qctx, fs, qtype_bits);
1598         if (retval) {
1599                 com_err(program_name, retval,
1600                         _("while initializing quota context in support library"));
1601                 exit(1);
1602         }
1603
1604         if (qtype_bits)
1605                 quota_compute_usage(qctx);
1606
1607         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1608                 if (quota_enable[qtype] == QOPT_ENABLE &&
1609                     *quota_sb_inump(fs->super, qtype) == 0) {
1610                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1611                                 retval = quota_update_limits(qctx, qf_ino,
1612                                                              qtype);
1613                                 if (retval) {
1614                                         com_err(program_name, retval,
1615                                                 _("while updating quota limits (%d)"),
1616                                                 qtype);
1617                                         exit(1);
1618                                 }
1619                         }
1620                         retval = quota_write_inode(qctx, 1 << qtype);
1621                         if (retval) {
1622                                 com_err(program_name, retval,
1623                                         _("while writing quota file (%d)"),
1624                                         qtype);
1625                                 exit(1);
1626                         }
1627                         /* Enable Quota feature if one of quota enabled */
1628                         if (!ext2fs_has_feature_quota(fs->super)) {
1629                                 ext2fs_set_feature_quota(fs->super);
1630                                 need_dirty = 1;
1631                         }
1632                         if (qtype == PRJQUOTA &&
1633                             !ext2fs_has_feature_project(fs->super)) {
1634                                 ext2fs_set_feature_project(fs->super);
1635                                 need_dirty = 1;
1636                         }
1637                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1638                         retval = quota_remove_inode(fs, qtype);
1639                         if (retval) {
1640                                 com_err(program_name, retval,
1641                                         _("while removing quota file (%d)"),
1642                                         qtype);
1643                                 exit(1);
1644                         }
1645                         if (qtype == PRJQUOTA) {
1646                                 ext2fs_clear_feature_project(fs->super);
1647                                 need_dirty = 1;
1648                         }
1649                 }
1650         }
1651
1652         quota_release_context(&qctx);
1653         /* Clear Quota feature if all quota types disabled. */
1654         if (!qtype_bits) {
1655                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1656                         if (*quota_sb_inump(fs->super, qtype))
1657                                 break;
1658                 if (qtype == MAXQUOTAS) {
1659                         ext2fs_clear_feature_quota(fs->super);
1660                         need_dirty = 1;
1661                 }
1662
1663         }
1664         if (need_dirty)
1665                 ext2fs_mark_super_dirty(fs);
1666         return;
1667 }
1668
1669 static int option_handle_function(char *token)
1670 {
1671         if (strncmp(token, "usr", 3) == 0) {
1672                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1673         } else if (strncmp(token, "^usr", 4) == 0) {
1674                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1675         } else if (strncmp(token, "grp", 3) == 0) {
1676                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1677         } else if (strncmp(token, "^grp", 4) == 0) {
1678                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1679         } else if (strncmp(token, "prj", 3) == 0) {
1680                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1681         } else if (strncmp(token, "^prj", 4) == 0) {
1682                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1683         } else {
1684                 fputs(_("\nBad quota options specified.\n\n"
1685                         "Following valid quota options are available "
1686                         "(pass by separating with comma):\n"
1687                         "\t[^]usr[quota]\n"
1688                         "\t[^]grp[quota]\n"
1689                         "\t[^]prj[quota]\n"
1690                         "\n\n"), stderr);
1691                 return 1;
1692         }
1693         return 0;
1694 }
1695
1696 static void parse_e2label_options(int argc, char ** argv)
1697 {
1698         if ((argc < 2) || (argc > 3)) {
1699                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1700                 exit(1);
1701         }
1702         io_options = strchr(argv[1], '?');
1703         if (io_options)
1704                 *io_options++ = 0;
1705         device_name = blkid_get_devname(NULL, argv[1], NULL);
1706         if (!device_name) {
1707                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1708                         argv[1]);
1709                 exit(1);
1710         }
1711         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1712         if (argc == 3) {
1713                 open_flag |= EXT2_FLAG_RW;
1714                 L_flag = 1;
1715                 new_label = argv[2];
1716         } else
1717                 print_label++;
1718 }
1719
1720 static time_t parse_time(char *str)
1721 {
1722         struct  tm      ts;
1723
1724         if (strcmp(str, "now") == 0) {
1725                 return (time(0));
1726         }
1727         memset(&ts, 0, sizeof(ts));
1728 #ifdef HAVE_STRPTIME
1729         strptime(str, "%Y%m%d%H%M%S", &ts);
1730 #else
1731         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1732                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1733         ts.tm_year -= 1900;
1734         ts.tm_mon -= 1;
1735         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1736             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1737             ts.tm_min > 59 || ts.tm_sec > 61)
1738                 ts.tm_mday = 0;
1739 #endif
1740         if (ts.tm_mday == 0) {
1741                 com_err(program_name, 0,
1742                         _("Couldn't parse date/time specifier: %s"),
1743                         str);
1744                 usage();
1745         }
1746         ts.tm_isdst = -1;
1747         return (mktime(&ts));
1748 }
1749
1750 static void parse_tune2fs_options(int argc, char **argv)
1751 {
1752         int c;
1753         char *tmp;
1754         struct group *gr;
1755         struct passwd *pw;
1756         int ret;
1757         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1758
1759         open_flag = 0;
1760         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1761         while ((c = getopt(argc, argv, optstring)) != EOF)
1762                 switch (c) {
1763                 case 'c':
1764                         max_mount_count = strtol(optarg, &tmp, 0);
1765                         if (*tmp || max_mount_count > 16000) {
1766                                 com_err(program_name, 0,
1767                                         _("bad mounts count - %s"),
1768                                         optarg);
1769                                 usage();
1770                         }
1771                         if (max_mount_count == 0)
1772                                 max_mount_count = -1;
1773                         c_flag = 1;
1774                         open_flag = EXT2_FLAG_RW;
1775                         break;
1776                 case 'C':
1777                         mount_count = strtoul(optarg, &tmp, 0);
1778                         if (*tmp || mount_count > 16000) {
1779                                 com_err(program_name, 0,
1780                                         _("bad mounts count - %s"),
1781                                         optarg);
1782                                 usage();
1783                         }
1784                         C_flag = 1;
1785                         open_flag = EXT2_FLAG_RW;
1786                         break;
1787                 case 'e':
1788                         if (strcmp(optarg, "continue") == 0)
1789                                 errors = EXT2_ERRORS_CONTINUE;
1790                         else if (strcmp(optarg, "remount-ro") == 0)
1791                                 errors = EXT2_ERRORS_RO;
1792                         else if (strcmp(optarg, "panic") == 0)
1793                                 errors = EXT2_ERRORS_PANIC;
1794                         else {
1795                                 com_err(program_name, 0,
1796                                         _("bad error behavior - %s"),
1797                                         optarg);
1798                                 usage();
1799                         }
1800                         e_flag = 1;
1801                         open_flag = EXT2_FLAG_RW;
1802                         break;
1803                 case 'E':
1804                         extended_cmd = optarg;
1805                         open_flag |= EXT2_FLAG_RW;
1806                         break;
1807                 case 'f': /* Force */
1808                         f_flag++;
1809                         break;
1810                 case 'g':
1811                         resgid = strtoul(optarg, &tmp, 0);
1812                         if (*tmp) {
1813                                 gr = getgrnam(optarg);
1814                                 if (gr == NULL)
1815                                         tmp = optarg;
1816                                 else {
1817                                         resgid = gr->gr_gid;
1818                                         *tmp = 0;
1819                                 }
1820                         }
1821                         if (*tmp) {
1822                                 com_err(program_name, 0,
1823                                         _("bad gid/group name - %s"),
1824                                         optarg);
1825                                 usage();
1826                         }
1827                         g_flag = 1;
1828                         open_flag = EXT2_FLAG_RW;
1829                         break;
1830                 case 'i':
1831                         interval = strtoul(optarg, &tmp, 0);
1832                         switch (*tmp) {
1833                         case 's':
1834                                 tmp++;
1835                                 break;
1836                         case '\0':
1837                         case 'd':
1838                         case 'D': /* days */
1839                                 interval *= 86400;
1840                                 if (*tmp != '\0')
1841                                         tmp++;
1842                                 break;
1843                         case 'm':
1844                         case 'M': /* months! */
1845                                 interval *= 86400 * 30;
1846                                 tmp++;
1847                                 break;
1848                         case 'w':
1849                         case 'W': /* weeks */
1850                                 interval *= 86400 * 7;
1851                                 tmp++;
1852                                 break;
1853                         }
1854                         if (*tmp) {
1855                                 com_err(program_name, 0,
1856                                         _("bad interval - %s"), optarg);
1857                                 usage();
1858                         }
1859                         i_flag = 1;
1860                         open_flag = EXT2_FLAG_RW;
1861                         break;
1862                 case 'j':
1863                         if (!journal_size)
1864                                 journal_size = -1;
1865                         open_flag = EXT2_FLAG_RW;
1866                         break;
1867                 case 'J':
1868                         parse_journal_opts(optarg);
1869                         open_flag = EXT2_FLAG_RW;
1870                         break;
1871                 case 'l':
1872                         l_flag = 1;
1873                         break;
1874                 case 'L':
1875                         new_label = optarg;
1876                         L_flag = 1;
1877                         open_flag |= EXT2_FLAG_RW |
1878                                 EXT2_FLAG_JOURNAL_DEV_OK;
1879                         break;
1880                 case 'm':
1881                         reserved_ratio = strtod(optarg, &tmp);
1882                         if (*tmp || reserved_ratio > 50 ||
1883                             reserved_ratio < 0) {
1884                                 com_err(program_name, 0,
1885                                         _("bad reserved block ratio - %s"),
1886                                         optarg);
1887                                 usage();
1888                         }
1889                         m_flag = 1;
1890                         open_flag = EXT2_FLAG_RW;
1891                         break;
1892                 case 'M':
1893                         new_last_mounted = optarg;
1894                         M_flag = 1;
1895                         open_flag = EXT2_FLAG_RW;
1896                         break;
1897                 case 'o':
1898                         if (mntopts_cmd) {
1899                                 com_err(program_name, 0, "%s",
1900                                         _("-o may only be specified once"));
1901                                 usage();
1902                         }
1903                         mntopts_cmd = optarg;
1904                         open_flag = EXT2_FLAG_RW;
1905                         break;
1906                 case 'O':
1907                         if (features_cmd) {
1908                                 com_err(program_name, 0, "%s",
1909                                         _("-O may only be specified once"));
1910                                 usage();
1911                         }
1912                         features_cmd = optarg;
1913                         open_flag = EXT2_FLAG_RW;
1914                         break;
1915                 case 'Q':
1916                         Q_flag = 1;
1917                         ret = parse_quota_opts(optarg, option_handle_function);
1918                         if (ret)
1919                                 exit(1);
1920                         open_flag = EXT2_FLAG_RW;
1921                         break;
1922                 case 'r':
1923                         reserved_blocks = strtoul(optarg, &tmp, 0);
1924                         if (*tmp) {
1925                                 com_err(program_name, 0,
1926                                         _("bad reserved blocks count - %s"),
1927                                         optarg);
1928                                 usage();
1929                         }
1930                         r_flag = 1;
1931                         open_flag = EXT2_FLAG_RW;
1932                         break;
1933                 case 's': /* Deprecated */
1934                         s_flag = atoi(optarg);
1935                         open_flag = EXT2_FLAG_RW;
1936                         break;
1937                 case 'T':
1938                         T_flag = 1;
1939                         last_check_time = parse_time(optarg);
1940                         open_flag = EXT2_FLAG_RW;
1941                         break;
1942                 case 'u':
1943                                 resuid = strtoul(optarg, &tmp, 0);
1944                                 if (*tmp) {
1945                                         pw = getpwnam(optarg);
1946                                         if (pw == NULL)
1947                                                 tmp = optarg;
1948                                         else {
1949                                                 resuid = pw->pw_uid;
1950                                                 *tmp = 0;
1951                                         }
1952                                 }
1953                                 if (*tmp) {
1954                                         com_err(program_name, 0,
1955                                                 _("bad uid/user name - %s"),
1956                                                 optarg);
1957                                         usage();
1958                                 }
1959                                 u_flag = 1;
1960                                 open_flag = EXT2_FLAG_RW;
1961                                 break;
1962                 case 'U':
1963                         new_UUID = optarg;
1964                         U_flag = 1;
1965                         open_flag = EXT2_FLAG_RW |
1966                                 EXT2_FLAG_JOURNAL_DEV_OK;
1967                         break;
1968                 case 'I':
1969                         new_inode_size = strtoul(optarg, &tmp, 0);
1970                         if (*tmp) {
1971                                 com_err(program_name, 0,
1972                                         _("bad inode size - %s"),
1973                                         optarg);
1974                                 usage();
1975                         }
1976                         if (!((new_inode_size &
1977                                (new_inode_size - 1)) == 0)) {
1978                                 com_err(program_name, 0,
1979                                         _("Inode size must be a "
1980                                           "power of two- %s"),
1981                                         optarg);
1982                                 usage();
1983                         }
1984                         open_flag = EXT2_FLAG_RW;
1985                         I_flag = 1;
1986                         break;
1987                 case 'z':
1988                         undo_file = optarg;
1989                         break;
1990                 default:
1991                         usage();
1992                 }
1993         if (optind < argc - 1 || optind == argc)
1994                 usage();
1995         if (!open_flag && !l_flag)
1996                 usage();
1997         io_options = strchr(argv[optind], '?');
1998         if (io_options)
1999                 *io_options++ = 0;
2000         device_name = blkid_get_devname(NULL, argv[optind], NULL);
2001         if (!device_name) {
2002                 com_err(program_name, 0, _("Unable to resolve '%s'"),
2003                         argv[optind]);
2004                 exit(1);
2005         }
2006 }
2007
2008 #ifdef CONFIG_BUILD_FINDFS
2009 void do_findfs(int argc, char **argv)
2010 {
2011         char    *dev;
2012
2013         if ((argc != 2) ||
2014             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2015                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2016                 exit(2);
2017         }
2018         dev = blkid_get_devname(NULL, argv[1], NULL);
2019         if (!dev) {
2020                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2021                         argv[1]);
2022                 exit(1);
2023         }
2024         puts(dev);
2025         exit(0);
2026 }
2027 #endif
2028
2029 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2030 {
2031         char    *buf, *token, *next, *p, *arg;
2032         int     len, hash_alg;
2033         int     r_usage = 0;
2034
2035         len = strlen(opts);
2036         buf = malloc(len+1);
2037         if (!buf) {
2038                 fprintf(stderr, "%s",
2039                         _("Couldn't allocate memory to parse options!\n"));
2040                 return 1;
2041         }
2042         strcpy(buf, opts);
2043         for (token = buf; token && *token; token = next) {
2044                 p = strchr(token, ',');
2045                 next = 0;
2046                 if (p) {
2047                         *p = 0;
2048                         next = p+1;
2049                 }
2050                 arg = strchr(token, '=');
2051                 if (arg) {
2052                         *arg = 0;
2053                         arg++;
2054                 }
2055                 if (strcmp(token, "clear-mmp") == 0 ||
2056                     strcmp(token, "clear_mmp") == 0) {
2057                         clear_mmp = 1;
2058                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2059                         unsigned long intv;
2060                         if (!arg) {
2061                                 r_usage++;
2062                                 continue;
2063                         }
2064                         intv = strtoul(arg, &p, 0);
2065                         if (*p) {
2066                                 fprintf(stderr,
2067                                         _("Invalid mmp_update_interval: %s\n"),
2068                                         arg);
2069                                 r_usage++;
2070                                 continue;
2071                         }
2072                         if (intv == 0) {
2073                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2074                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2075                                 fprintf(stderr,
2076                                         _("mmp_update_interval too big: %lu\n"),
2077                                         intv);
2078                                 r_usage++;
2079                                 continue;
2080                         }
2081                         printf(P_("Setting multiple mount protection update "
2082                                   "interval to %lu second\n",
2083                                   "Setting multiple mount protection update "
2084                                   "interval to %lu seconds\n", intv),
2085                                intv);
2086                         fs->super->s_mmp_update_interval = intv;
2087                         ext2fs_mark_super_dirty(fs);
2088                 } else if (!strcmp(token, "force_fsck")) {
2089                         fs->super->s_state |= EXT2_ERROR_FS;
2090                         printf(_("Setting filesystem error flag to force fsck.\n"));
2091                         ext2fs_mark_super_dirty(fs);
2092                 } else if (!strcmp(token, "test_fs")) {
2093                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2094                         printf("Setting test filesystem flag\n");
2095                         ext2fs_mark_super_dirty(fs);
2096                 } else if (!strcmp(token, "^test_fs")) {
2097                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2098                         printf("Clearing test filesystem flag\n");
2099                         ext2fs_mark_super_dirty(fs);
2100                 } else if (strcmp(token, "stride") == 0) {
2101                         if (!arg) {
2102                                 r_usage++;
2103                                 continue;
2104                         }
2105                         stride = strtoul(arg, &p, 0);
2106                         if (*p) {
2107                                 fprintf(stderr,
2108                                         _("Invalid RAID stride: %s\n"),
2109                                         arg);
2110                                 r_usage++;
2111                                 continue;
2112                         }
2113                         stride_set = 1;
2114                 } else if (strcmp(token, "stripe-width") == 0 ||
2115                            strcmp(token, "stripe_width") == 0) {
2116                         if (!arg) {
2117                                 r_usage++;
2118                                 continue;
2119                         }
2120                         stripe_width = strtoul(arg, &p, 0);
2121                         if (*p) {
2122                                 fprintf(stderr,
2123                                         _("Invalid RAID stripe-width: %s\n"),
2124                                         arg);
2125                                 r_usage++;
2126                                 continue;
2127                         }
2128                         stripe_width_set = 1;
2129                 } else if (strcmp(token, "hash_alg") == 0 ||
2130                            strcmp(token, "hash-alg") == 0) {
2131                         if (!arg) {
2132                                 r_usage++;
2133                                 continue;
2134                         }
2135                         hash_alg = e2p_string2hash(arg);
2136                         if (hash_alg < 0) {
2137                                 fprintf(stderr,
2138                                         _("Invalid hash algorithm: %s\n"),
2139                                         arg);
2140                                 r_usage++;
2141                                 continue;
2142                         }
2143                         fs->super->s_def_hash_version = hash_alg;
2144                         printf(_("Setting default hash algorithm "
2145                                  "to %s (%d)\n"),
2146                                arg, hash_alg);
2147                         ext2fs_mark_super_dirty(fs);
2148                 } else if (!strcmp(token, "mount_opts")) {
2149                         if (!arg) {
2150                                 r_usage++;
2151                                 continue;
2152                         }
2153                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2154                                 fprintf(stderr,
2155                                         "Extended mount options too long\n");
2156                                 continue;
2157                         }
2158                         ext_mount_opts = strdup(arg);
2159                 } else
2160                         r_usage++;
2161         }
2162         if (r_usage) {
2163                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2164                         "Extended options are separated by commas, "
2165                         "and may take an argument which\n"
2166                         "\tis set off by an equals ('=') sign.\n\n"
2167                         "Valid extended options are:\n"
2168                         "\tclear_mmp\n"
2169                         "\thash_alg=<hash algorithm>\n"
2170                         "\tmount_opts=<extended default mount options>\n"
2171                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2172                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2173                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2174                         "\tforce_fsck\n"
2175                         "\ttest_fs\n"
2176                         "\t^test_fs\n"));
2177                 free(buf);
2178                 return 1;
2179         }
2180         free(buf);
2181
2182         return 0;
2183 }
2184
2185 /*
2186  * Fill in the block bitmap bmap with the information regarding the
2187  * blocks to be moved
2188  */
2189 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2190                             ext2fs_block_bitmap bmap)
2191 {
2192         dgrp_t i;
2193         int retval;
2194         ext2_badblocks_list bb_list = 0;
2195         blk64_t j, needed_blocks = 0;
2196         blk64_t start_blk, end_blk;
2197
2198         retval = ext2fs_read_bb_inode(fs, &bb_list);
2199         if (retval)
2200                 return retval;
2201
2202         for (i = 0; i < fs->group_desc_count; i++) {
2203                 start_blk = ext2fs_inode_table_loc(fs, i) +
2204                                         fs->inode_blocks_per_group;
2205
2206                 end_blk = ext2fs_inode_table_loc(fs, i) +
2207                                         new_ino_blks_per_grp;
2208
2209                 for (j = start_blk; j < end_blk; j++) {
2210                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2211                                 /*
2212                                  * IF the block is a bad block we fail
2213                                  */
2214                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2215                                         ext2fs_badblocks_list_free(bb_list);
2216                                         return ENOSPC;
2217                                 }
2218
2219                                 ext2fs_mark_block_bitmap2(bmap, j);
2220                         } else {
2221                                 /*
2222                                  * We are going to use this block for
2223                                  * inode table. So mark them used.
2224                                  */
2225                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2226                         }
2227                 }
2228                 needed_blocks += end_blk - start_blk;
2229         }
2230
2231         ext2fs_badblocks_list_free(bb_list);
2232         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2233                 return ENOSPC;
2234
2235         return 0;
2236 }
2237
2238 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2239 {
2240         dgrp_t group;
2241         group = ext2fs_group_of_blk2(fs, blk);
2242         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2243                 return 1;
2244         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2245                 return 1;
2246         return 0;
2247 }
2248
2249 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2250 {
2251         blk64_t start_blk, end_blk;
2252         start_blk = fs->super->s_first_data_block +
2253                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2254         /*
2255          * We cannot get new block beyond end_blk for for the last block group
2256          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2257          */
2258         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2259         if (blk >= start_blk && blk <= end_blk)
2260                 return 1;
2261         return 0;
2262 }
2263
2264 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2265 {
2266
2267         char *buf;
2268         dgrp_t group = 0;
2269         errcode_t retval;
2270         int meta_data = 0;
2271         blk64_t blk, new_blk, goal;
2272         struct blk_move *bmv;
2273
2274         retval = ext2fs_get_mem(fs->blocksize, &buf);
2275         if (retval)
2276                 return retval;
2277
2278         for (new_blk = blk = fs->super->s_first_data_block;
2279              blk < ext2fs_blocks_count(fs->super); blk++) {
2280                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2281                         continue;
2282
2283                 if (ext2fs_is_meta_block(fs, blk)) {
2284                         /*
2285                          * If the block is mapping a fs meta data block
2286                          * like group desc/block bitmap/inode bitmap. We
2287                          * should find a block in the same group and fix
2288                          * the respective fs metadata pointers. Otherwise
2289                          * fail
2290                          */
2291                         group = ext2fs_group_of_blk2(fs, blk);
2292                         goal = ext2fs_group_first_block2(fs, group);
2293                         meta_data = 1;
2294
2295                 } else {
2296                         goal = new_blk;
2297                 }
2298                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2299                 if (retval)
2300                         goto err_out;
2301
2302                 /* new fs meta data block should be in the same group */
2303                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2304                         retval = ENOSPC;
2305                         goto err_out;
2306                 }
2307
2308                 /* Mark this block as allocated */
2309                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2310
2311                 /* Add it to block move list */
2312                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2313                 if (retval)
2314                         goto err_out;
2315
2316                 bmv->old_loc = blk;
2317                 bmv->new_loc = new_blk;
2318
2319                 list_add(&(bmv->list), &blk_move_list);
2320
2321                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2322                 if (retval)
2323                         goto err_out;
2324
2325                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2326                 if (retval)
2327                         goto err_out;
2328         }
2329
2330 err_out:
2331         ext2fs_free_mem(&buf);
2332         return retval;
2333 }
2334
2335 static blk64_t translate_block(blk64_t blk)
2336 {
2337         struct list_head *entry;
2338         struct blk_move *bmv;
2339
2340         list_for_each(entry, &blk_move_list) {
2341                 bmv = list_entry(entry, struct blk_move, list);
2342                 if (bmv->old_loc == blk)
2343                         return bmv->new_loc;
2344         }
2345
2346         return 0;
2347 }
2348
2349 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2350                          blk64_t *block_nr,
2351                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2352                          blk64_t ref_block EXT2FS_ATTR((unused)),
2353                          int ref_offset EXT2FS_ATTR((unused)),
2354                          void *priv_data)
2355 {
2356         int ret = 0;
2357         blk64_t new_blk;
2358         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2359
2360         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2361                 return 0;
2362         new_blk = translate_block(*block_nr);
2363         if (new_blk) {
2364                 *block_nr = new_blk;
2365                 /*
2366                  * This will force the ext2fs_write_inode in the iterator
2367                  */
2368                 ret |= BLOCK_CHANGED;
2369         }
2370
2371         return ret;
2372 }
2373
2374 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2375 {
2376         errcode_t retval = 0;
2377         ext2_ino_t ino;
2378         blk64_t blk;
2379         char *block_buf = 0;
2380         struct ext2_inode inode;
2381         ext2_inode_scan scan = NULL;
2382
2383         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2384         if (retval)
2385                 return retval;
2386
2387         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2388         if (retval)
2389                 goto err_out;
2390
2391         while (1) {
2392                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2393                 if (retval)
2394                         goto err_out;
2395
2396                 if (!ino)
2397                         break;
2398
2399                 if (inode.i_links_count == 0)
2400                         continue; /* inode not in use */
2401
2402                 /* FIXME!!
2403                  * If we end up modifying the journal inode
2404                  * the sb->s_jnl_blocks will differ. But a
2405                  * subsequent e2fsck fixes that.
2406                  * Do we need to fix this ??
2407                  */
2408
2409                 if (ext2fs_file_acl_block(fs, &inode) &&
2410                     ext2fs_test_block_bitmap2(bmap,
2411                                         ext2fs_file_acl_block(fs, &inode))) {
2412                         blk = translate_block(ext2fs_file_acl_block(fs,
2413                                                                     &inode));
2414                         if (!blk)
2415                                 continue;
2416
2417                         ext2fs_file_acl_block_set(fs, &inode, blk);
2418
2419                         /*
2420                          * Write the inode to disk so that inode table
2421                          * resizing can work
2422                          */
2423                         retval = ext2fs_write_inode(fs, ino, &inode);
2424                         if (retval)
2425                                 goto err_out;
2426                 }
2427
2428                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2429                         continue;
2430
2431                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2432                                                process_block, bmap);
2433                 if (retval)
2434                         goto err_out;
2435
2436         }
2437
2438 err_out:
2439         ext2fs_free_mem(&block_buf);
2440         ext2fs_close_inode_scan(scan);
2441
2442         return retval;
2443 }
2444
2445 /*
2446  * We need to scan for inode and block bitmaps that may need to be
2447  * moved.  This can take place if the filesystem was formatted for
2448  * RAID arrays using the mke2fs's extended option "stride".
2449  */
2450 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2451 {
2452         dgrp_t i;
2453         blk64_t blk, new_blk;
2454
2455         for (i = 0; i < fs->group_desc_count; i++) {
2456                 blk = ext2fs_block_bitmap_loc(fs, i);
2457                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2458                         new_blk = translate_block(blk);
2459                         if (!new_blk)
2460                                 continue;
2461                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2462                 }
2463
2464                 blk = ext2fs_inode_bitmap_loc(fs, i);
2465                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2466                         new_blk = translate_block(blk);
2467                         if (!new_blk)
2468                                 continue;
2469                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2470                 }
2471         }
2472         return 0;
2473 }
2474
2475 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2476 {
2477         dgrp_t i;
2478         blk64_t blk;
2479         errcode_t retval;
2480         int new_ino_blks_per_grp;
2481         unsigned int j;
2482         char *old_itable = NULL, *new_itable = NULL;
2483         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2484         unsigned long old_ino_size;
2485         int old_itable_size, new_itable_size;
2486
2487         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2488         old_ino_size = EXT2_INODE_SIZE(fs->super);
2489
2490         new_ino_blks_per_grp = ext2fs_div_ceil(
2491                                         EXT2_INODES_PER_GROUP(fs->super) *
2492                                         new_ino_size,
2493                                         fs->blocksize);
2494
2495         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2496
2497         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2498         if (retval)
2499                 return retval;
2500
2501         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2502         if (retval)
2503                 goto err_out;
2504
2505         tmp_old_itable = old_itable;
2506         tmp_new_itable = new_itable;
2507
2508         for (i = 0; i < fs->group_desc_count; i++) {
2509                 blk = ext2fs_inode_table_loc(fs, i);
2510                 retval = io_channel_read_blk64(fs->io, blk,
2511                                 fs->inode_blocks_per_group, old_itable);
2512                 if (retval)
2513                         goto err_out;
2514
2515                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2516                         memcpy(new_itable, old_itable, old_ino_size);
2517
2518                         memset(new_itable+old_ino_size, 0,
2519                                         new_ino_size - old_ino_size);
2520
2521                         new_itable += new_ino_size;
2522                         old_itable += old_ino_size;
2523                 }
2524
2525                 /* reset the pointer */
2526                 old_itable = tmp_old_itable;
2527                 new_itable = tmp_new_itable;
2528
2529                 retval = io_channel_write_blk64(fs->io, blk,
2530                                         new_ino_blks_per_grp, new_itable);
2531                 if (retval)
2532                         goto err_out;
2533         }
2534
2535         /* Update the meta data */
2536         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2537         ext2fs_free_inode_cache(fs->icache);
2538         fs->icache = 0;
2539         fs->super->s_inode_size = new_ino_size;
2540
2541 err_out:
2542         if (old_itable)
2543                 ext2fs_free_mem(&old_itable);
2544
2545         if (new_itable)
2546                 ext2fs_free_mem(&new_itable);
2547
2548         return retval;
2549 }
2550
2551 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2552 {
2553         blk64_t         blk;
2554         ext2_ino_t      ino;
2555         unsigned int    group = 0;
2556         unsigned int    count = 0;
2557         int             total_free = 0;
2558         int             group_free = 0;
2559
2560         /*
2561          * First calculate the block statistics
2562          */
2563         for (blk = fs->super->s_first_data_block;
2564              blk < ext2fs_blocks_count(fs->super); blk++) {
2565                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2566                         group_free++;
2567                         total_free++;
2568                 }
2569                 count++;
2570                 if ((count == fs->super->s_blocks_per_group) ||
2571                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2572                         ext2fs_bg_free_blocks_count_set(fs, group++,
2573                                                         group_free);
2574                         count = 0;
2575                         group_free = 0;
2576                 }
2577         }
2578         total_free = EXT2FS_C2B(fs, total_free);
2579         ext2fs_free_blocks_count_set(fs->super, total_free);
2580
2581         /*
2582          * Next, calculate the inode statistics
2583          */
2584         group_free = 0;
2585         total_free = 0;
2586         count = 0;
2587         group = 0;
2588
2589         /* Protect loop from wrap-around if s_inodes_count maxed */
2590         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2591                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2592                         group_free++;
2593                         total_free++;
2594                 }
2595                 count++;
2596                 if ((count == fs->super->s_inodes_per_group) ||
2597                     (ino == fs->super->s_inodes_count)) {
2598                         ext2fs_bg_free_inodes_count_set(fs, group++,
2599                                                         group_free);
2600                         count = 0;
2601                         group_free = 0;
2602                 }
2603         }
2604         fs->super->s_free_inodes_count = total_free;
2605         ext2fs_mark_super_dirty(fs);
2606         return 0;
2607 }
2608
2609 #define list_for_each_safe(pos, pnext, head) \
2610         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2611              pos = pnext, pnext = pos->next)
2612
2613 static void free_blk_move_list(void)
2614 {
2615         struct list_head *entry, *tmp;
2616         struct blk_move *bmv;
2617
2618         list_for_each_safe(entry, tmp, &blk_move_list) {
2619                 bmv = list_entry(entry, struct blk_move, list);
2620                 list_del(entry);
2621                 ext2fs_free_mem(&bmv);
2622         }
2623         return;
2624 }
2625
2626 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2627 {
2628         errcode_t retval;
2629         int new_ino_blks_per_grp;
2630         ext2fs_block_bitmap bmap;
2631
2632         retval = ext2fs_read_inode_bitmap(fs);
2633         if (retval) {
2634                 fputs(_("Failed to read inode bitmap\n"), stderr);
2635                 return retval;
2636         }
2637         retval = ext2fs_read_block_bitmap(fs);
2638         if (retval) {
2639                 fputs(_("Failed to read block bitmap\n"), stderr);
2640                 return retval;
2641         }
2642         INIT_LIST_HEAD(&blk_move_list);
2643
2644
2645         new_ino_blks_per_grp = ext2fs_div_ceil(
2646                                         EXT2_INODES_PER_GROUP(fs->super)*
2647                                         new_size,
2648                                         fs->blocksize);
2649
2650         /* We may change the file system.
2651          * Mark the file system as invalid so that
2652          * the user is prompted to run fsck.
2653          */
2654         fs->super->s_state &= ~EXT2_VALID_FS;
2655
2656         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2657                                                 &bmap);
2658         if (retval) {
2659                 fputs(_("Failed to allocate block bitmap when "
2660                                 "increasing inode size\n"), stderr);
2661                 return retval;
2662         }
2663         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2664         if (retval) {
2665                 fputs(_("Not enough space to increase inode size \n"), stderr);
2666                 goto err_out;
2667         }
2668         retval = move_block(fs, bmap);
2669         if (retval) {
2670                 fputs(_("Failed to relocate blocks during inode resize \n"),
2671                       stderr);
2672                 goto err_out;
2673         }
2674         retval = inode_scan_and_fix(fs, bmap);
2675         if (retval)
2676                 goto err_out_undo;
2677
2678         retval = group_desc_scan_and_fix(fs, bmap);
2679         if (retval)
2680                 goto err_out_undo;
2681
2682         retval = expand_inode_table(fs, new_size);
2683         if (retval)
2684                 goto err_out_undo;
2685
2686         ext2fs_calculate_summary_stats(fs);
2687
2688         fs->super->s_state |= EXT2_VALID_FS;
2689         /* mark super block and block bitmap as dirty */
2690         ext2fs_mark_super_dirty(fs);
2691         ext2fs_mark_bb_dirty(fs);
2692
2693 err_out:
2694         free_blk_move_list();
2695         ext2fs_free_block_bitmap(bmap);
2696
2697         return retval;
2698
2699 err_out_undo:
2700         free_blk_move_list();
2701         ext2fs_free_block_bitmap(bmap);
2702         fputs(_("Error in resizing the inode size.\n"
2703                         "Run e2undo to undo the "
2704                         "file system changes. \n"), stderr);
2705
2706         return retval;
2707 }
2708
2709 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2710 {
2711         errcode_t retval = 0;
2712         const char *tdb_dir;
2713         char *tdb_file = NULL;
2714         char *dev_name, *tmp_name;
2715
2716         /* (re)open a specific undo file */
2717         if (undo_file && undo_file[0] != 0) {
2718                 retval = set_undo_io_backing_manager(*io_ptr);
2719                 if (retval)
2720                         goto err;
2721                 *io_ptr = undo_io_manager;
2722                 retval = set_undo_io_backup_file(undo_file);
2723                 if (retval)
2724                         goto err;
2725                 printf(_("Overwriting existing filesystem; this can be undone "
2726                          "using the command:\n"
2727                          "    e2undo %s %s\n\n"),
2728                          undo_file, name);
2729                 return retval;
2730         }
2731
2732         /*
2733          * Configuration via a conf file would be
2734          * nice
2735          */
2736         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2737         if (!tdb_dir)
2738                 tdb_dir = "/var/lib/e2fsprogs";
2739
2740         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2741             access(tdb_dir, W_OK))
2742                 return 0;
2743
2744         tmp_name = strdup(name);
2745         if (!tmp_name)
2746                 goto errout;
2747         dev_name = basename(tmp_name);
2748         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2749         if (!tdb_file) {
2750                 free(tmp_name);
2751                 goto errout;
2752         }
2753         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2754         free(tmp_name);
2755
2756         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2757                 retval = errno;
2758                 com_err(program_name, retval,
2759                         _("while trying to delete %s"), tdb_file);
2760                 goto errout;
2761         }
2762
2763         retval = set_undo_io_backing_manager(*io_ptr);
2764         if (retval)
2765                 goto errout;
2766         *io_ptr = undo_io_manager;
2767         retval = set_undo_io_backup_file(tdb_file);
2768         if (retval)
2769                 goto errout;
2770         printf(_("Overwriting existing filesystem; this can be undone "
2771                  "using the command:\n"
2772                  "    e2undo %s %s\n\n"),
2773                  tdb_file, name);
2774
2775         free(tdb_file);
2776         return 0;
2777 errout:
2778         free(tdb_file);
2779 err:
2780         com_err("tune2fs", retval, "while trying to setup undo file\n");
2781         return retval;
2782 }
2783
2784 static int
2785 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2786 {
2787         int retval, nr_users, start;
2788         journal_superblock_t *jsb;
2789         ext2_filsys jfs;
2790         __u8 *j_uuid;
2791         char *journal_path;
2792         char uuid[UUID_STR_SIZE];
2793         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2794
2795         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2796                 return 0;
2797
2798         uuid_unparse(sb->s_journal_uuid, uuid);
2799         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2800         if (!journal_path)
2801                 return 0;
2802
2803         retval = ext2fs_open2(journal_path, io_options,
2804                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2805                               0, 0, unix_io_manager, &jfs);
2806         if (retval) {
2807                 com_err(program_name, retval,
2808                         _("while trying to open %s"),
2809                         journal_path);
2810                 return retval;
2811         }
2812
2813         retval = get_journal_sb(jfs, buf);
2814         if (retval != 0) {
2815                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2816                         fprintf(stderr, _("%s is not a journal device.\n"),
2817                                 journal_path);
2818                 return retval;
2819         }
2820
2821         jsb = (journal_superblock_t *) buf;
2822         /* Find the filesystem UUID */
2823         nr_users = ntohl(jsb->s_nr_users);
2824         if (nr_users > JFS_USERS_MAX) {
2825                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2826                                  "is too high (%d).\n"), nr_users);
2827                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2828         }
2829
2830         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2831         if (j_uuid == NULL) {
2832                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2833                       stderr);
2834                 return EXT2_ET_LOAD_EXT_JOURNAL;
2835         }
2836
2837         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2838
2839         start = ext2fs_journal_sb_start(jfs->blocksize);
2840         /* Write back the journal superblock */
2841         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2842         if (retval != 0) {
2843                 com_err(program_name, retval,
2844                         "while writing journal superblock.");
2845                 return retval;
2846         }
2847
2848         ext2fs_close(jfs);
2849
2850         return 0;
2851 }
2852
2853 #ifndef BUILD_AS_LIB
2854 int main(int argc, char **argv)
2855 #else
2856 int tune2fs_main(int argc, char **argv)
2857 #endif  /* BUILD_AS_LIB */
2858 {
2859         errcode_t retval;
2860         ext2_filsys fs;
2861         struct ext2_super_block *sb;
2862         io_manager io_ptr, io_ptr_orig = NULL;
2863         int rc = 0;
2864         char default_undo_file[1] = { 0 };
2865
2866 #ifdef ENABLE_NLS
2867         setlocale(LC_MESSAGES, "");
2868         setlocale(LC_CTYPE, "");
2869         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2870         textdomain(NLS_CAT_NAME);
2871         set_com_err_gettext(gettext);
2872 #endif
2873         if (argc && *argv)
2874                 program_name = *argv;
2875         add_error_table(&et_ext2_error_table);
2876
2877 #ifdef CONFIG_BUILD_FINDFS
2878         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2879                 do_findfs(argc, argv);
2880 #endif
2881         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2882                 parse_e2label_options(argc, argv);
2883         else
2884                 parse_tune2fs_options(argc, argv);
2885
2886 #ifdef CONFIG_TESTIO_DEBUG
2887         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2888                 io_ptr = test_io_manager;
2889                 test_io_backing_manager = unix_io_manager;
2890         } else
2891 #endif
2892                 io_ptr = unix_io_manager;
2893
2894 retry_open:
2895         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2896                 open_flag |= EXT2_FLAG_SKIP_MMP;
2897
2898         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2899
2900         /* keep the filesystem struct around to dump MMP data */
2901         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2902
2903         retval = ext2fs_open2(device_name, io_options, open_flag,
2904                               0, 0, io_ptr, &fs);
2905         if (retval) {
2906                 com_err(program_name, retval,
2907                         _("while trying to open %s"),
2908                         device_name);
2909                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2910                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2911                         dump_mmp_msg(fs->mmp_buf,
2912                                      _("If you are sure the filesystem "
2913                                        "is not in use on any node, run:\n"
2914                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2915                 else if (retval == EXT2_ET_MMP_FAILED)
2916                         dump_mmp_msg(fs->mmp_buf, NULL);
2917                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2918                         fprintf(stderr,
2919                                 _("MMP block magic is bad. Try to fix it by "
2920                                   "running:\n'e2fsck -f %s'\n"), device_name);
2921                 else if (retval == EXT2_ET_BAD_MAGIC)
2922                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2923                 else if (retval != EXT2_ET_MMP_FAILED)
2924                         fprintf(stderr, "%s",
2925                              _("Couldn't find valid filesystem superblock.\n"));
2926
2927                 ext2fs_free(fs);
2928                 exit(1);
2929         }
2930         if (ext2fs_has_feature_journal_dev(fs->super)) {
2931                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2932                 ext2fs_free(fs);
2933                 exit(1);
2934         }
2935         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2936
2937         if (I_flag) {
2938                 /*
2939                  * Check the inode size is right so we can issue an
2940                  * error message and bail before setting up the tdb
2941                  * file.
2942                  */
2943                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2944                         fprintf(stderr, _("The inode size is already %lu\n"),
2945                                 new_inode_size);
2946                         rc = 1;
2947                         goto closefs;
2948                 }
2949                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2950                         fprintf(stderr, "%s",
2951                                 _("Shrinking inode size is not supported\n"));
2952                         rc = 1;
2953                         goto closefs;
2954                 }
2955                 if (new_inode_size > fs->blocksize) {
2956                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2957                                 new_inode_size, fs->blocksize);
2958                         rc = 1;
2959                         goto closefs;
2960                 }
2961                 check_fsck_needed(fs,
2962                         _("Resizing inodes could take some time."));
2963                 /*
2964                  * If inode resize is requested use the
2965                  * Undo I/O manager
2966                  */
2967                 undo_file = default_undo_file;
2968         }
2969
2970         /* Set up an undo file */
2971         if (undo_file && io_ptr_orig == NULL) {
2972                 io_ptr_orig = io_ptr;
2973                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2974                 if (retval) {
2975                         rc = 1;
2976                         goto closefs;
2977                 }
2978                 if (io_ptr != io_ptr_orig) {
2979                         ext2fs_close_free(&fs);
2980                         goto retry_open;
2981                 }
2982         }
2983
2984         sb = fs->super;
2985         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2986
2987         if (print_label) {
2988                 /* For e2label emulation */
2989                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2990                        sb->s_volume_name);
2991                 remove_error_table(&et_ext2_error_table);
2992                 goto closefs;
2993         }
2994
2995         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2996         if (retval) {
2997                 com_err("ext2fs_check_if_mount", retval,
2998                         _("while determining whether %s is mounted."),
2999                         device_name);
3000                 rc = 1;
3001                 goto closefs;
3002         }
3003
3004 #ifdef NO_RECOVERY
3005         /* Warn if file system needs recovery and it is opened for writing. */
3006         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3007             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3008             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3009                 fprintf(stderr,
3010 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3011   "\te2fsck -E journal_only %s\n\n"
3012   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3013   "by journal recovery.\n"), device_name);
3014         }
3015 #else
3016         /* Recover the journal if possible. */
3017         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3018             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3019                 errcode_t err;
3020
3021                 printf(_("Recovering journal.\n"));
3022                 err = ext2fs_run_ext3_journal(&fs);
3023                 if (err) {
3024                         com_err("tune2fs", err, "while recovering journal.\n");
3025                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3026                         if (fs)
3027                                 ext2fs_close_free(&fs);
3028                         exit(1);
3029                 }
3030                 sb = fs->super;
3031         }
3032 #endif
3033
3034         /* Normally we only need to write out the superblock */
3035         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3036
3037         if (c_flag) {
3038                 sb->s_max_mnt_count = max_mount_count;
3039                 ext2fs_mark_super_dirty(fs);
3040                 printf(_("Setting maximal mount count to %d\n"),
3041                        max_mount_count);
3042         }
3043         if (C_flag) {
3044                 sb->s_mnt_count = mount_count;
3045                 ext2fs_mark_super_dirty(fs);
3046                 printf(_("Setting current mount count to %d\n"), mount_count);
3047         }
3048         if (e_flag) {
3049                 sb->s_errors = errors;
3050                 ext2fs_mark_super_dirty(fs);
3051                 printf(_("Setting error behavior to %d\n"), errors);
3052         }
3053         if (g_flag) {
3054                 sb->s_def_resgid = resgid;
3055                 ext2fs_mark_super_dirty(fs);
3056                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3057         }
3058         if (i_flag) {
3059                 if ((unsigned long long)interval >= (1ULL << 32)) {
3060                         com_err(program_name, 0,
3061                                 _("interval between checks is too big (%lu)"),
3062                                 interval);
3063                         rc = 1;
3064                         goto closefs;
3065                 }
3066                 sb->s_checkinterval = interval;
3067                 ext2fs_mark_super_dirty(fs);
3068                 printf(_("Setting interval between checks to %lu seconds\n"),
3069                        interval);
3070         }
3071         if (m_flag) {
3072                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3073                                           ext2fs_blocks_count(sb) / 100.0);
3074                 ext2fs_mark_super_dirty(fs);
3075                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3076                         reserved_ratio, ext2fs_r_blocks_count(sb));
3077         }
3078         if (r_flag) {
3079                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3080                         com_err(program_name, 0,
3081                                 _("reserved blocks count is too big (%llu)"),
3082                                 reserved_blocks);
3083                         rc = 1;
3084                         goto closefs;
3085                 }
3086                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3087                 ext2fs_mark_super_dirty(fs);
3088                 printf(_("Setting reserved blocks count to %llu\n"),
3089                        reserved_blocks);
3090         }
3091         if (s_flag == 1) {
3092                 if (ext2fs_has_feature_sparse_super(sb)) {
3093                         fputs(_("\nThe filesystem already has sparse "
3094                                 "superblocks.\n"), stderr);
3095                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3096                         fputs(_("\nSetting the sparse superblock flag not "
3097                                 "supported\nfor filesystems with "
3098                                 "the meta_bg feature enabled.\n"),
3099                                 stderr);
3100                         rc = 1;
3101                         goto closefs;
3102                 } else {
3103                         ext2fs_set_feature_sparse_super(sb);
3104                         sb->s_state &= ~EXT2_VALID_FS;
3105                         ext2fs_mark_super_dirty(fs);
3106                         printf(_("\nSparse superblock flag set.  %s"),
3107                                _(please_fsck));
3108                 }
3109         }
3110         if (s_flag == 0) {
3111                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3112                       stderr);
3113                 rc = 1;
3114                 goto closefs;
3115         }
3116         if (T_flag) {
3117                 sb->s_lastcheck = last_check_time;
3118                 ext2fs_mark_super_dirty(fs);
3119                 printf(_("Setting time filesystem last checked to %s\n"),
3120                        ctime(&last_check_time));
3121         }
3122         if (u_flag) {
3123                 sb->s_def_resuid = resuid;
3124                 ext2fs_mark_super_dirty(fs);
3125                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3126         }
3127         if (L_flag) {
3128                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3129                         fputs(_("Warning: label too long, truncating.\n"),
3130                               stderr);
3131                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3132                 strncpy(sb->s_volume_name, new_label,
3133                         sizeof(sb->s_volume_name));
3134                 ext2fs_mark_super_dirty(fs);
3135         }
3136         if (M_flag) {
3137                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3138                 strncpy(sb->s_last_mounted, new_last_mounted,
3139                         sizeof(sb->s_last_mounted));
3140                 ext2fs_mark_super_dirty(fs);
3141         }
3142         if (mntopts_cmd) {
3143                 rc = update_mntopts(fs, mntopts_cmd);
3144                 if (rc)
3145                         goto closefs;
3146         }
3147         if (features_cmd) {
3148                 rc = update_feature_set(fs, features_cmd);
3149                 if (rc)
3150                         goto closefs;
3151         }
3152         if (extended_cmd) {
3153                 rc = parse_extended_opts(fs, extended_cmd);
3154                 if (rc)
3155                         goto closefs;
3156                 if (clear_mmp && !f_flag) {
3157                         fputs(_("Error in using clear_mmp. "
3158                                 "It must be used with -f\n"),
3159                               stderr);
3160                         goto closefs;
3161                 }
3162         }
3163         if (clear_mmp) {
3164                 rc = ext2fs_mmp_clear(fs);
3165                 goto closefs;
3166         }
3167         if (journal_size || journal_device) {
3168                 rc = add_journal(fs);
3169                 if (rc)
3170                         goto closefs;
3171         }
3172
3173         if (Q_flag) {
3174                 if (mount_flags & EXT2_MF_MOUNTED) {
3175                         fputs(_("The quota feature may only be changed when "
3176                                 "the filesystem is unmounted.\n"), stderr);
3177                         rc = 1;
3178                         goto closefs;
3179                 }
3180                 handle_quota_options(fs);
3181         }
3182
3183         if (U_flag) {
3184                 int set_csum = 0;
3185                 dgrp_t i;
3186                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3187                 __u8 old_uuid[UUID_SIZE];
3188
3189                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3190                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3191                      ext2fs_has_feature_ea_inode(fs->super))) {
3192                         check_fsck_needed(fs,
3193                                 _("Setting the UUID on this "
3194                                   "filesystem could take some time."));
3195                         rewrite_checksums = 1;
3196                 }
3197
3198                 if (ext2fs_has_group_desc_csum(fs)) {
3199                         /*
3200                          * Changing the UUID on a metadata_csum FS requires
3201                          * rewriting all metadata, which can race with a
3202                          * mounted fs.  Don't allow that unless we're saving
3203                          * the checksum seed.
3204                          */
3205                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3206                             !ext2fs_has_feature_csum_seed(fs->super) &&
3207                             ext2fs_has_feature_metadata_csum(fs->super)) {
3208                                 fputs(_("The UUID may only be "
3209                                         "changed when the filesystem is "
3210                                         "unmounted.\n"), stderr);
3211                                 fputs(_("If you only use kernels newer than "
3212                                         "v4.4, run 'tune2fs -O "
3213                                         "metadata_csum_seed' and re-run this "
3214                                         "command.\n"), stderr);
3215                                 try_confirm_csum_seed_support();
3216                                 exit(1);
3217                         }
3218
3219                         /*
3220                          * Determine if the block group checksums are
3221                          * correct so we know whether or not to set
3222                          * them later on.
3223                          */
3224                         for (i = 0; i < fs->group_desc_count; i++)
3225                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3226                                         break;
3227                         if (i >= fs->group_desc_count)
3228                                 set_csum = 1;
3229                 }
3230
3231                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3232                 if ((strcasecmp(new_UUID, "null") == 0) ||
3233                     (strcasecmp(new_UUID, "clear") == 0)) {
3234                         uuid_clear(sb->s_uuid);
3235                 } else if (strcasecmp(new_UUID, "time") == 0) {
3236                         uuid_generate_time(sb->s_uuid);
3237                 } else if (strcasecmp(new_UUID, "random") == 0) {
3238                         uuid_generate(sb->s_uuid);
3239                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3240                         com_err(program_name, 0, "%s",
3241                                 _("Invalid UUID format\n"));
3242                         rc = 1;
3243                         goto closefs;
3244                 }
3245                 ext2fs_init_csum_seed(fs);
3246                 if (set_csum) {
3247                         for (i = 0; i < fs->group_desc_count; i++)
3248                                 ext2fs_group_desc_csum_set(fs, i);
3249                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3250                 }
3251
3252                 /* If this is a journal dev, we need to copy UUID into jsb */
3253                 if (!(rc = get_journal_sb(fs, buf))) {
3254                         journal_superblock_t *jsb;
3255
3256                         jsb = (journal_superblock_t *) buf;
3257                         fputs(_("Need to update journal superblock.\n"), stdout);
3258                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3259
3260                         /* Writeback the journal superblock */
3261                         if ((rc = io_channel_write_blk64(fs->io,
3262                                 ext2fs_journal_sb_start(fs->blocksize),
3263                                         -SUPERBLOCK_SIZE, buf)))
3264                                 goto closefs;
3265                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3266                         goto closefs;
3267                 else {
3268                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3269
3270                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3271                                 goto closefs;
3272                 }
3273
3274                 ext2fs_mark_super_dirty(fs);
3275         }
3276
3277         if (I_flag) {
3278                 if (mount_flags & EXT2_MF_MOUNTED) {
3279                         fputs(_("The inode size may only be "
3280                                 "changed when the filesystem is "
3281                                 "unmounted.\n"), stderr);
3282                         rc = 1;
3283                         goto closefs;
3284                 }
3285                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3286                         fputs(_("Changing the inode size not supported for "
3287                                 "filesystems with the flex_bg\n"
3288                                 "feature enabled.\n"),
3289                               stderr);
3290                         rc = 1;
3291                         goto closefs;
3292                 }
3293                 /*
3294                  * We want to update group descriptor also
3295                  * with the new free inode count
3296                  */
3297                 if (rewrite_checksums)
3298                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3299                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3300                 retval = resize_inode(fs, new_inode_size);
3301                 if (rewrite_checksums)
3302                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3303                 if (retval == 0) {
3304                         printf(_("Setting inode size %lu\n"),
3305                                                         new_inode_size);
3306                         rewrite_checksums = 1;
3307                 } else {
3308                         printf("%s", _("Failed to change inode size\n"));
3309                         rc = 1;
3310                         goto closefs;
3311                 }
3312         }
3313
3314         if (rewrite_checksums)
3315                 rewrite_metadata_checksums(fs);
3316
3317         if (l_flag)
3318                 list_super(sb);
3319         if (stride_set) {
3320                 sb->s_raid_stride = stride;
3321                 ext2fs_mark_super_dirty(fs);
3322                 printf(_("Setting stride size to %d\n"), stride);
3323         }
3324         if (stripe_width_set) {
3325                 sb->s_raid_stripe_width = stripe_width;
3326                 ext2fs_mark_super_dirty(fs);
3327                 printf(_("Setting stripe width to %d\n"), stripe_width);
3328         }
3329         if (ext_mount_opts) {
3330                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3331                         sizeof(fs->super->s_mount_opts));
3332                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3333                 ext2fs_mark_super_dirty(fs);
3334                 printf(_("Setting extended default mount options to '%s'\n"),
3335                        ext_mount_opts);
3336                 free(ext_mount_opts);
3337         }
3338
3339         free(device_name);
3340         remove_error_table(&et_ext2_error_table);
3341
3342 closefs:
3343         if (rc) {
3344                 ext2fs_mmp_stop(fs);
3345 #ifndef BUILD_AS_LIB
3346                 exit(1);
3347 #endif
3348         }
3349
3350         if (feature_64bit)
3351                 convert_64bit(fs, feature_64bit);
3352         return (ext2fs_close_free(&fs) ? 1 : 0);
3353 }