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 /* Rewrite extents */
 501 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
 502                                  struct ext2_inode *inode)
 503 {
 504         ext2_extent_handle_t    handle;
 505         struct ext2fs_extent    extent;
 506         errcode_t               errcode;
 507         struct ext2_extent_info info;
 508
 509         if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
 510             !ext2fs_has_feature_metadata_csum(fs->super))
 511                 return 0;
 512
 513         errcode = ext2fs_extent_open(fs, ino, &handle);
 514         if (errcode)
 515                 return errcode;
 516
 517         errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
 518         if (errcode)
 519                 goto out;
 520
 521         do {
 522                 errcode = ext2fs_extent_get_info(handle, &info);
 523                 if (errcode)
 524                         break;
 525
 526                 /*
 527                  * If this is the first extent in an extent block that we
 528                  * haven't visited, rewrite the extent to force the ETB
 529                  * checksum to be rewritten.
 530                  */
 531                 if (info.curr_entry == 1 && info.curr_level != 0 &&
 532                     !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
 533                         errcode = ext2fs_extent_replace(handle, 0, &extent);
 534                         if (errcode)
 535                                 break;
 536                 }
 537
 538                 /* Skip to the end of a block of leaf nodes */
 539                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 540                         errcode = ext2fs_extent_get(handle,
 541                                                     EXT2_EXTENT_LAST_SIB,
 542                                                     &extent);
 543                         if (errcode)
 544                                 break;
 545                 }
 546
 547                 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
 548         } while (errcode == 0);
 549
 550 out:
 551         /* Ok if we run off the end */
 552         if (errcode == EXT2_ET_EXTENT_NO_NEXT)
 553                 errcode = 0;
 554         ext2fs_extent_free(handle);
 555         return errcode;
 556 }
 557
 558 /*
 559  * Rewrite directory blocks with checksums
 560  */
 561 struct rewrite_dir_context {
 562         char *buf;
 563         errcode_t errcode;
 564         ext2_ino_t dir;
 565         int is_htree;
 566 };
 567
 568 static int rewrite_dir_block(ext2_filsys fs,
 569                              blk64_t    *blocknr,
 570                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 571                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 572                              int        ref_offset EXT2FS_ATTR((unused)),
 573                              void       *priv_data)
 574 {
 575         struct ext2_dx_countlimit *dcl = NULL;
 576         struct rewrite_dir_context *ctx = priv_data;
 577         int dcl_offset, changed = 0;
 578
 579         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 580                                               ctx->dir);
 581         if (ctx->errcode)
 582                 return BLOCK_ABORT;
 583
 584         /* if htree node... */
 585         if (ctx->is_htree)
 586                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 587                                          &dcl, &dcl_offset);
 588         if (dcl) {
 589                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 590                         /* Ensure limit is the max size */
 591                         int max_entries = (fs->blocksize - dcl_offset) /
 592                                           sizeof(struct ext2_dx_entry);
 593                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 594                                 changed = 1;
 595                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 596                         }
 597                 } else {
 598                         /* If htree block is full then rebuild the dir */
 599                         if (ext2fs_le16_to_cpu(dcl->count) ==
 600                             ext2fs_le16_to_cpu(dcl->limit)) {
 601                                 request_dir_fsck_afterwards(fs);
 602                                 return 0;
 603                         }
 604                         /*
 605                          * Ensure dcl->limit is small enough to leave room for
 606                          * the checksum tail.
 607                          */
 608                         int max_entries = (fs->blocksize - (dcl_offset +
 609                                                 sizeof(struct ext2_dx_tail))) /
 610                                           sizeof(struct ext2_dx_entry);
 611                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 612                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 613                         /* Always rewrite checksum */
 614                         changed = 1;
 615                 }
 616         } else {
 617                 unsigned int rec_len, name_size;
 618                 char *top = ctx->buf + fs->blocksize;
 619                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 620                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 621
 622                 /* Find last and penultimate dirent */
 623                 while ((char *)de < top) {
 624                         penultimate_de = last_de;
 625                         last_de = de;
 626                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 627                         if (!ctx->errcode && !rec_len)
 628                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 629                         if (ctx->errcode)
 630                                 return BLOCK_ABORT;
 631                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 632                 }
 633                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 634                 if (ctx->errcode)
 635                         return BLOCK_ABORT;
 636                 name_size = ext2fs_dirent_name_len(last_de);
 637
 638                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 639                         if (!penultimate_de)
 640                                 return 0;
 641                         if (last_de->inode ||
 642                             name_size ||
 643                             rec_len != sizeof(struct ext2_dir_entry_tail))
 644                                 return 0;
 645                         /*
 646                          * The last dirent is unused and the right length to
 647                          * have stored a checksum.  Erase it.
 648                          */
 649                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 650                                                           &rec_len);
 651                         if (!rec_len)
 652                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 653                         if (ctx->errcode)
 654                                 return BLOCK_ABORT;
 655                         ext2fs_set_rec_len(fs, rec_len +
 656                                         sizeof(struct ext2_dir_entry_tail),
 657                                         penultimate_de);
 658                         changed = 1;
 659                 } else {
 660                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 661                         struct ext2_dir_entry_tail *t;
 662
 663                         /*
 664                          * If the last dirent looks like the tail, just update
 665                          * the checksum.
 666                          */
 667                         if (!last_de->inode &&
 668                             rec_len == csum_size) {
 669                                 t = (struct ext2_dir_entry_tail *)last_de;
 670                                 t->det_reserved_name_len =
 671                                                 EXT2_DIR_NAME_LEN_CSUM;
 672                                 changed = 1;
 673                                 goto out;
 674                         }
 675                         if (name_size & 3)
 676                                 name_size = (name_size & ~3) + 4;
 677                         /* If there's not enough space for the tail, e2fsck */
 678                         if (rec_len <= (8 + name_size + csum_size)) {
 679                                 request_dir_fsck_afterwards(fs);
 680                                 return 0;
 681                         }
 682                         /* Shorten that last de and insert the tail */
 683                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 684                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 685                         ext2fs_initialize_dirent_tail(fs, t);
 686
 687                         /* Always update checksum */
 688                         changed = 1;
 689                 }
 690         }
 691
 692 out:
 693         if (!changed)
 694                 return 0;
 695
 696         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 697                                                0, ctx->dir);
 698         if (ctx->errcode)
 699                 return BLOCK_ABORT;
 700
 701         return 0;
 702 }
 703
 704 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 705                                    struct ext2_inode *inode)
 706 {
 707         errcode_t       retval;
 708         struct rewrite_dir_context ctx;
 709
 710         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 711         if (retval)
 712                 return retval;
 713
 714         ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
 715         ctx.dir = dir;
 716         ctx.errcode = 0;
 717         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 718                                                 BLOCK_FLAG_DATA_ONLY,
 719                                        0, rewrite_dir_block, &ctx);
 720
 721         ext2fs_free_mem(&ctx.buf);
 722         if (retval)
 723                 return retval;
 724
 725         return ctx.errcode;
 726 }
 727
 728 /*
 729  * Context information that does not change across rewrite_one_inode()
 730  * invocations.
 731  */
 732 struct rewrite_context {
 733         ext2_filsys fs;
 734         struct ext2_inode *zero_inode;
 735         char *ea_buf;
 736         int inode_size;
 737 };
 738
 739 #define fatal_err(code, args...)                \
 740         do {                                    \
 741                 com_err(__func__, code, args);  \
 742                 exit(1);                        \
 743         } while (0);
 744
 745 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 746                                  struct ext2_inode *inode)
 747 {
 748         errcode_t retval;
 749         ext2_file_t file;
 750         __u32 hash;
 751
 752         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 753         if (retval)
 754                 fatal_err(retval, "open ea_inode");
 755         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 756                                   NULL);
 757         if (retval)
 758                 fatal_err(retval, "read ea_inode");
 759         retval = ext2fs_file_close(file);
 760         if (retval)
 761                 fatal_err(retval, "close ea_inode");
 762
 763         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 764                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 765         ext2fs_set_ea_inode_hash(inode, hash);
 766 }
 767
 768 static int update_xattr_entry_hashes(ext2_filsys fs,
 769                                      struct ext2_ext_attr_entry *entry,
 770                                      struct ext2_ext_attr_entry *end)
 771 {
 772         int modified = 0;
 773         errcode_t retval;
 774
 775         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 776                 if (entry->e_value_inum) {
 777                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 778                                                              &entry->e_hash);
 779                         if (retval)
 780                                 fatal_err(retval, "hash ea_inode entry");
 781                         modified = 1;
 782                 }
 783                 entry = EXT2_EXT_ATTR_NEXT(entry);
 784         }
 785         return modified;
 786 }
 787
 788 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 789                                        struct ext2_inode_large *inode)
 790 {
 791         struct ext2_ext_attr_entry *start, *end;
 792         __u32 *ea_magic;
 793
 794         if (inode->i_extra_isize == 0)
 795                 return;
 796
 797         if (inode->i_extra_isize & 3 ||
 798             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 799                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 800
 801         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 802                                 inode->i_extra_isize);
 803         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 804                 return;
 805
 806         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 807         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 808
 809         update_xattr_entry_hashes(ctx->fs, start, end);
 810 }
 811
 812 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 813                                       char *block_buf)
 814 {
 815         struct ext2_ext_attr_header *header;
 816         struct ext2_ext_attr_entry *start, *end;
 817
 818         header = (struct ext2_ext_attr_header *)block_buf;
 819         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 820                 return;
 821
 822         start = (struct ext2_ext_attr_entry *)(header+1);
 823         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 824
 825         if (update_xattr_entry_hashes(ctx->fs, start, end))
 826                 ext2fs_ext_attr_block_rehash(header, end);
 827 }
 828
 829 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 830                               struct ext2_inode *inode)
 831 {
 832         blk64_t file_acl_block;
 833         errcode_t retval;
 834
 835         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 836                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 837                         return;
 838                 memset(inode, 0, ctx->inode_size);
 839         }
 840
 841         if (inode->i_flags & EXT4_EA_INODE_FL)
 842                 update_ea_inode_hash(ctx, ino, inode);
 843
 844         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 845                 update_inline_xattr_hashes(ctx,
 846                                            (struct ext2_inode_large *)inode);
 847
 848         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 849         if (retval)
 850                 fatal_err(retval, "while writing inode");
 851
 852         retval = rewrite_extents(ctx->fs, ino, inode);
 853         if (retval)
 854                 fatal_err(retval, "while rewriting extents");
 855
 856         if (LINUX_S_ISDIR(inode->i_mode) &&
 857             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 858                 retval = rewrite_directory(ctx->fs, ino, inode);
 859                 if (retval)
 860                         fatal_err(retval, "while rewriting directories");
 861         }
 862
 863         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 864         if (!file_acl_block)
 865                 return;
 866
 867         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 868                                        ino);
 869         if (retval)
 870                 fatal_err(retval, "while rewriting extended attribute");
 871
 872         update_block_xattr_hashes(ctx, ctx->ea_buf);
 873         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 874                                         ino);
 875         if (retval)
 876                 fatal_err(retval, "while rewriting extended attribute");
 877 }
 878
 879 /*
 880  * Forcibly set checksums in all inodes.
 881  */
 882 static void rewrite_inodes(ext2_filsys fs)
 883 {
 884         ext2_inode_scan scan;
 885         errcode_t       retval;
 886         ext2_ino_t      ino;
 887         struct ext2_inode *inode;
 888         int pass;
 889         struct rewrite_context ctx = {
 890                 .fs = fs,
 891                 .inode_size = EXT2_INODE_SIZE(fs->super),
 892         };
 893
 894         if (fs->super->s_creator_os == EXT2_OS_HURD)
 895                 return;
 896
 897         retval = ext2fs_get_mem(ctx.inode_size, &inode);
 898         if (retval)
 899                 fatal_err(retval, "while allocating memory");
 900
 901         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 902         if (retval)
 903                 fatal_err(retval, "while allocating memory");
 904
 905         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 906         if (retval)
 907                 fatal_err(retval, "while allocating memory");
 908
 909         /*
 910          * Extended attribute inodes have a lookup hash that needs to be
 911          * recalculated with the new csum_seed. Other inodes referencing xattr
 912          * inodes need this value to be up to date. That's why we do two passes:
 913          *
 914          * pass 1: update xattr inodes to update their lookup hash as well as
 915          *         other checksums.
 916          *
 917          * pass 2: go over other inodes to update their checksums.
 918          */
 919         if (ext2fs_has_feature_ea_inode(fs->super))
 920                 pass = 1;
 921         else
 922                 pass = 2;
 923         for (;pass <= 2; pass++) {
 924                 retval = ext2fs_open_inode_scan(fs, 0, &scan);
 925                 if (retval)
 926                         fatal_err(retval, "while opening inode scan");
 927
 928                 do {
 929                         retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 930                                                             ctx.inode_size);
 931                         if (retval)
 932                                 fatal_err(retval, "while getting next inode");
 933                         if (!ino)
 934                                 break;
 935
 936                         if (((pass == 1) &&
 937                              (inode->i_flags & EXT4_EA_INODE_FL)) ||
 938                             ((pass == 2) &&
 939                              !(inode->i_flags & EXT4_EA_INODE_FL)))
 940                                 rewrite_one_inode(&ctx, ino, inode);
 941                 } while (ino);
 942
 943                 ext2fs_close_inode_scan(scan);
 944         }
 945
 946         ext2fs_free_mem(&ctx.zero_inode);
 947         ext2fs_free_mem(&ctx.ea_buf);
 948         ext2fs_free_mem(&inode);
 949 }
 950
 951 static void rewrite_metadata_checksums(ext2_filsys fs)
 952 {
 953         errcode_t retval;
 954         dgrp_t i;
 955
 956         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 957         ext2fs_init_csum_seed(fs);
 958         for (i = 0; i < fs->group_desc_count; i++)
 959                 ext2fs_group_desc_csum_set(fs, i);
 960         retval = ext2fs_read_bitmaps(fs);
 961         if (retval)
 962                 fatal_err(retval, "while reading bitmaps");
 963         rewrite_inodes(fs);
 964         ext2fs_mark_ib_dirty(fs);
 965         ext2fs_mark_bb_dirty(fs);
 966         ext2fs_mmp_update2(fs, 1);
 967         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 968         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 969         if (ext2fs_has_feature_metadata_csum(fs->super))
 970                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 971         else
 972                 fs->super->s_checksum_type = 0;
 973         ext2fs_mark_super_dirty(fs);
 974 }
 975
 976 static void enable_uninit_bg(ext2_filsys fs)
 977 {
 978         struct ext2_group_desc *gd;
 979         dgrp_t i;
 980
 981         for (i = 0; i < fs->group_desc_count; i++) {
 982                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 983                 gd->bg_itable_unused = 0;
 984                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 985                 ext2fs_group_desc_csum_set(fs, i);
 986         }
 987         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 988 }
 989
 990 static errcode_t zero_empty_inodes(ext2_filsys fs)
 991 {
 992         int length = EXT2_INODE_SIZE(fs->super);
 993         struct ext2_inode *inode = NULL;
 994         ext2_inode_scan scan;
 995         errcode_t       retval;
 996         ext2_ino_t      ino;
 997
 998         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 999         if (retval)
1000                 goto out;
1001
1002         retval = ext2fs_get_mem(length, &inode);
1003         if (retval)
1004                 goto out;
1005
1006         do {
1007                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1008                 if (retval)
1009                         goto out;
1010                 if (!ino)
1011                         break;
1012                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
1013                         memset(inode, 0, length);
1014                         retval = ext2fs_write_inode_full(fs, ino, inode,
1015                                                          length);
1016                         if (retval)
1017                                 goto out;
1018                 }
1019         } while (1);
1020
1021 out:
1022         ext2fs_free_mem(&inode);
1023         ext2fs_close_inode_scan(scan);
1024         return retval;
1025 }
1026
1027 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1028 {
1029         struct ext2_group_desc *gd;
1030         dgrp_t i;
1031         errcode_t retval;
1032         blk64_t b, c, d;
1033
1034         /* Load bitmaps to ensure that the uninit ones get written out */
1035         fs->super->s_feature_ro_compat |= csum_feature_flag;
1036         retval = ext2fs_read_bitmaps(fs);
1037         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1038         if (retval) {
1039                 com_err("disable_uninit_bg", retval,
1040                         "while reading bitmaps");
1041                 request_fsck_afterwards(fs);
1042                 return retval;
1043         }
1044         ext2fs_mark_ib_dirty(fs);
1045         ext2fs_mark_bb_dirty(fs);
1046
1047         /* If we're only turning off uninit_bg, zero the inodes */
1048         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1049                 retval = zero_empty_inodes(fs);
1050                 if (retval) {
1051                         com_err("disable_uninit_bg", retval,
1052                                 "while zeroing unused inodes");
1053                         request_fsck_afterwards(fs);
1054                         return retval;
1055                 }
1056         }
1057
1058         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1059         for (i = 0; i < fs->group_desc_count; i++) {
1060                 b = ext2fs_block_bitmap_loc(fs, i);
1061                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1062                 b = ext2fs_inode_bitmap_loc(fs, i);
1063                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1064
1065                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1066                 if (retval == 0 && b)
1067                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1068                 if (retval == 0 && c)
1069                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1070                 if (retval == 0 && d)
1071                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1072                 if (retval) {
1073                         com_err("disable_uninit_bg", retval,
1074                                 "while initializing block bitmaps");
1075                         request_fsck_afterwards(fs);
1076                 }
1077
1078                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1079                 gd->bg_itable_unused = 0;
1080                 gd->bg_flags = 0;
1081                 ext2fs_group_desc_csum_set(fs, i);
1082         }
1083         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1084         ext2fs_mark_super_dirty(fs);
1085
1086         return 0;
1087 }
1088
1089 static void
1090 try_confirm_csum_seed_support(void)
1091 {
1092         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1093                 fputs(_("WARNING: Could not confirm kernel support for "
1094                         "metadata_csum_seed.\n  This requires Linux >= "
1095                         "v4.4.\n"), stderr);
1096 }
1097
1098 /*
1099  * Update the feature set as provided by the user.
1100  */
1101 static int update_feature_set(ext2_filsys fs, char *features)
1102 {
1103         struct ext2_super_block *sb = fs->super;
1104         __u32           old_features[3];
1105         int             type_err;
1106         unsigned int    mask_err;
1107         errcode_t       err;
1108         enum quota_type qtype;
1109
1110 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1111                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1112 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1113                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1114 #define FEATURE_CHANGED(type, mask) ((mask) & \
1115                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1116
1117         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1118         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1119         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1120
1121         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1122                               ok_features, clear_ok_features,
1123                               &type_err, &mask_err)) {
1124                 if (!mask_err)
1125                         fprintf(stderr,
1126                                 _("Invalid filesystem option set: %s\n"),
1127                                 features);
1128                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1129                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1130                                           "not supported.\n"),
1131                                 e2p_feature2string(type_err &
1132                                                    E2P_FEATURE_TYPE_MASK,
1133                                                    mask_err));
1134                 else
1135                         fprintf(stderr, _("Setting filesystem feature '%s' "
1136                                           "not supported.\n"),
1137                                 e2p_feature2string(type_err, mask_err));
1138                 return 1;
1139         }
1140
1141         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1142                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1143                     !(mount_flags & EXT2_MF_READONLY)) {
1144                         fputs(_("The has_journal feature may only be "
1145                                 "cleared when the filesystem is\n"
1146                                 "unmounted or mounted "
1147                                 "read-only.\n"), stderr);
1148                         return 1;
1149                 }
1150                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1151                     f_flag < 2) {
1152                         fputs(_("The needs_recovery flag is set.  "
1153                                 "Please run e2fsck before clearing\n"
1154                                 "the has_journal flag.\n"), stderr);
1155                         return 1;
1156                 }
1157                 if (sb->s_journal_inum) {
1158                         if (remove_journal_inode(fs))
1159                                 return 1;
1160                 }
1161                 if (sb->s_journal_dev) {
1162                         if (remove_journal_device(fs))
1163                                 return 1;
1164                 }
1165         }
1166
1167         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1168                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1169                 if (ext2fs_has_feature_meta_bg(sb)) {
1170                         fputs(_("Setting filesystem feature 'sparse_super' "
1171                                 "not supported\nfor filesystems with "
1172                                 "the meta_bg feature enabled.\n"),
1173                                 stderr);
1174                         return 1;
1175                 }
1176         }
1177
1178         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1179                 int error;
1180
1181                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1182                     (mount_flags & EXT2_MF_READONLY)) {
1183                         fputs(_("The multiple mount protection feature can't\n"
1184                                 "be set if the filesystem is mounted or\n"
1185                                 "read-only.\n"), stderr);
1186                         return 1;
1187                 }
1188
1189                 error = ext2fs_mmp_init(fs);
1190                 if (error) {
1191                         fputs(_("\nError while enabling multiple mount "
1192                                 "protection feature."), stderr);
1193                         return 1;
1194                 }
1195
1196                 /*
1197                  * We want to update group desc with the new free blocks count
1198                  */
1199                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1200
1201                 printf(_("Multiple mount protection has been enabled "
1202                          "with update interval %ds.\n"),
1203                        sb->s_mmp_update_interval);
1204         }
1205
1206         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1207                 int error;
1208
1209                 if (mount_flags & EXT2_MF_READONLY) {
1210                         fputs(_("The multiple mount protection feature cannot\n"
1211                                 "be disabled if the filesystem is readonly.\n"),
1212                                 stderr);
1213                         return 1;
1214                 }
1215
1216                 error = ext2fs_read_bitmaps(fs);
1217                 if (error) {
1218                         fputs(_("Error while reading bitmaps\n"), stderr);
1219                         return 1;
1220                 }
1221
1222                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1223                 if (error) {
1224                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1225
1226                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1227                                 printf(_("Magic number in MMP block does not "
1228                                          "match. expected: %x, actual: %x\n"),
1229                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1230                         else
1231                                 com_err(program_name, error, "%s",
1232                                         _("while reading MMP block."));
1233                         goto mmp_error;
1234                 }
1235
1236                 /* We need to force out the group descriptors as well */
1237                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1238                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1239 mmp_error:
1240                 sb->s_mmp_block = 0;
1241                 sb->s_mmp_update_interval = 0;
1242         }
1243
1244         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1245                 /*
1246                  * If adding a journal flag, let the create journal
1247                  * code below handle setting the flag and creating the
1248                  * journal.  We supply a default size if necessary.
1249                  */
1250                 if (!journal_size)
1251                         journal_size = -1;
1252                 ext2fs_clear_feature_journal(sb);
1253         }
1254
1255         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1256                 if (!sb->s_def_hash_version)
1257                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1258                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1259                         uuid_generate((unsigned char *) sb->s_hash_seed);
1260         }
1261
1262         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1263                 if (ext2fs_check_desc(fs)) {
1264                         fputs(_("Clearing the flex_bg flag would "
1265                                 "cause the the filesystem to be\n"
1266                                 "inconsistent.\n"), stderr);
1267                         return 1;
1268                 }
1269         }
1270
1271         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1272                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1273                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1274                     !(mount_flags & EXT2_MF_READONLY)) {
1275                         fputs(_("The huge_file feature may only be "
1276                                 "cleared when the filesystem is\n"
1277                                 "unmounted or mounted "
1278                                 "read-only.\n"), stderr);
1279                         return 1;
1280                 }
1281         }
1282
1283         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1284                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1285                 check_fsck_needed(fs,
1286                         _("Enabling checksums could take some time."));
1287                 if (mount_flags & EXT2_MF_MOUNTED) {
1288                         fputs(_("Cannot enable metadata_csum on a mounted "
1289                                 "filesystem!\n"), stderr);
1290                         exit(1);
1291                 }
1292                 if (!ext2fs_has_feature_extents(fs->super))
1293                         printf("%s",
1294                                _("Extents are not enabled.  The file extent "
1295                                  "tree can be checksummed, whereas block maps "
1296                                  "cannot.  Not enabling extents reduces the "
1297                                  "coverage of metadata checksumming.  "
1298                                  "Re-run with -O extent to rectify.\n"));
1299                 if (!ext2fs_has_feature_64bit(fs->super))
1300                         printf("%s",
1301                                _("64-bit filesystem support is not enabled.  "
1302                                  "The larger fields afforded by this feature "
1303                                  "enable full-strength checksumming.  "
1304                                  "Run resize2fs -b to rectify.\n"));
1305                 rewrite_checksums = 1;
1306                 /* metadata_csum supersedes uninit_bg */
1307                 ext2fs_clear_feature_gdt_csum(fs->super);
1308
1309                 /* if uninit_bg was previously off, rewrite group desc */
1310                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1311                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1312                         enable_uninit_bg(fs);
1313
1314                 /*
1315                  * Since metadata_csum supersedes uninit_bg, pretend like
1316                  * uninit_bg has been off all along.
1317                  */
1318                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1319                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1320         }
1321
1322         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1323                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1324                 __u32   test_features[3];
1325
1326                 check_fsck_needed(fs,
1327                         _("Disabling checksums could take some time."));
1328                 if (mount_flags & EXT2_MF_MOUNTED) {
1329                         fputs(_("Cannot disable metadata_csum on a mounted "
1330                                 "filesystem!\n"), stderr);
1331                         exit(1);
1332                 }
1333                 rewrite_checksums = 1;
1334
1335                 /* Enable uninit_bg unless the user expressly turned it off */
1336                 memcpy(test_features, old_features, sizeof(test_features));
1337                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1338                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1339                 e2p_edit_feature2(features, test_features, ok_features,
1340                                   clear_ok_features, NULL, NULL);
1341                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1342                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1343                         ext2fs_set_feature_gdt_csum(fs->super);
1344
1345                 /*
1346                  * If we're turning off metadata_csum and not turning on
1347                  * uninit_bg, rewrite group desc.
1348                  */
1349                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1350                         err = disable_uninit_bg(fs,
1351                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1352                         if (err)
1353                                 return 1;
1354                 } else
1355                         /*
1356                          * metadata_csum previously provided uninit_bg, so if
1357                          * we're also setting the uninit_bg feature bit,
1358                          * pretend like it was previously enabled.  Checksums
1359                          * will be rewritten with crc16 later.
1360                          */
1361                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1362                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1363                 fs->super->s_checksum_seed = 0;
1364                 ext2fs_clear_feature_csum_seed(fs->super);
1365         }
1366
1367         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1368                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1369                 /* Do not enable uninit_bg when metadata_csum enabled */
1370                 if (ext2fs_has_feature_metadata_csum(fs->super))
1371                         ext2fs_clear_feature_gdt_csum(fs->super);
1372                 else
1373                         enable_uninit_bg(fs);
1374         }
1375
1376         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1377                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1378                 err = disable_uninit_bg(fs,
1379                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1380                 if (err)
1381                         return 1;
1382         }
1383
1384         /*
1385          * We don't actually toggle 64bit; resize2fs does that.  But this
1386          * must come after the metadata_csum feature_on so that it won't
1387          * complain about the lack of 64bit.
1388          */
1389         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1390                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1391                 if (mount_flags & EXT2_MF_MOUNTED) {
1392                         fprintf(stderr, _("Cannot enable 64-bit mode "
1393                                           "while mounted!\n"));
1394                         exit(1);
1395                 }
1396                 ext2fs_clear_feature_64bit(sb);
1397                 feature_64bit = 1;
1398         }
1399         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1400                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1401                 if (mount_flags & EXT2_MF_MOUNTED) {
1402                         fprintf(stderr, _("Cannot disable 64-bit mode "
1403                                           "while mounted!\n"));
1404                         exit(1);
1405                 }
1406                 ext2fs_set_feature_64bit(sb);
1407                 feature_64bit = -1;
1408         }
1409
1410         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1411                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1412                 /*
1413                  * Set the Q_flag here and handle the quota options in the code
1414                  * below.
1415                  */
1416                 if (!Q_flag) {
1417                         Q_flag = 1;
1418                         /* Enable usr/grp quota by default */
1419                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1420                                 if (qtype != PRJQUOTA)
1421                                         quota_enable[qtype] = QOPT_ENABLE;
1422                                 else
1423                                         quota_enable[qtype] = QOPT_DISABLE;
1424                         }
1425                 }
1426                 ext2fs_clear_feature_quota(sb);
1427         }
1428
1429         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1430                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1431                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1432                         fprintf(stderr, _("Cannot enable project feature; "
1433                                           "inode size too small.\n"));
1434                         exit(1);
1435                 }
1436                 Q_flag = 1;
1437                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1438         }
1439
1440         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1441                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1442                 Q_flag = 1;
1443                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1444         }
1445
1446         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1447                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1448                 /*
1449                  * Set the Q_flag here and handle the quota options in the code
1450                  * below.
1451                  */
1452                 if (Q_flag)
1453                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1454                                 "arguments.\n"), stderr);
1455                 Q_flag = 1;
1456                 /* Disable all quota by default */
1457                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1458                         quota_enable[qtype] = QOPT_DISABLE;
1459         }
1460
1461         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1462                 fs->super->s_encrypt_algos[0] =
1463                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1464                 fs->super->s_encrypt_algos[1] =
1465                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1466         }
1467
1468         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1469                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1470                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1471                         fputs(_("Setting feature 'metadata_csum_seed' "
1472                                 "is only supported\non filesystems with "
1473                                 "the metadata_csum feature enabled.\n"),
1474                                 stderr);
1475                         return 1;
1476                 }
1477                 try_confirm_csum_seed_support();
1478                 fs->super->s_checksum_seed = fs->csum_seed;
1479         }
1480
1481         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1482                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1483                 __le32 uuid_seed;
1484
1485                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1486                                         sizeof(fs->super->s_uuid));
1487                 if (fs->super->s_checksum_seed != uuid_seed) {
1488                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1489                                 fputs(_("UUID has changed since enabling "
1490                 "metadata_csum.  Filesystem must be unmounted "
1491                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1492                                       stderr);
1493                                 return 1;
1494                         }
1495                         check_fsck_needed(fs, _("Recalculating checksums "
1496                                                 "could take some time."));
1497                         rewrite_checksums = 1;
1498                 }
1499         }
1500
1501         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1502             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1503              sb->s_feature_incompat))
1504                 ext2fs_update_dynamic_rev(fs);
1505
1506         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1507                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1508             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1509                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1510             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1511                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1512             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1513                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1514             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1515                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1516                 request_fsck_afterwards(fs);
1517
1518         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1519             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1520             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1521                 ext2fs_mark_super_dirty(fs);
1522
1523         return 0;
1524 }
1525
1526 /*
1527  * Add a journal to the filesystem.
1528  */
1529 static int add_journal(ext2_filsys fs)
1530 {
1531         unsigned long journal_blocks;
1532         errcode_t       retval;
1533         ext2_filsys     jfs;
1534         io_manager      io_ptr;
1535
1536         if (ext2fs_has_feature_journal(fs->super)) {
1537                 fputs(_("The filesystem already has a journal.\n"), stderr);
1538                 goto err;
1539         }
1540         if (journal_device) {
1541                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1542                                         NULL))
1543                         proceed_question(-1);
1544                 check_mount(journal_device, 0, _("journal"));
1545 #ifdef CONFIG_TESTIO_DEBUG
1546                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1547                         io_ptr = test_io_manager;
1548                         test_io_backing_manager = unix_io_manager;
1549                 } else
1550 #endif
1551                         io_ptr = unix_io_manager;
1552                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1553                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1554                                      fs->blocksize, io_ptr, &jfs);
1555                 if (retval) {
1556                         com_err(program_name, retval,
1557                                 _("\n\twhile trying to open journal on %s\n"),
1558                                 journal_device);
1559                         goto err;
1560                 }
1561                 printf(_("Creating journal on device %s: "),
1562                        journal_device);
1563                 fflush(stdout);
1564
1565                 retval = ext2fs_add_journal_device(fs, jfs);
1566                 ext2fs_close_free(&jfs);
1567                 if (retval) {
1568                         com_err(program_name, retval,
1569                                 _("while adding filesystem to journal on %s"),
1570                                 journal_device);
1571                         goto err;
1572                 }
1573                 fputs(_("done\n"), stdout);
1574         } else if (journal_size) {
1575                 fputs(_("Creating journal inode: "), stdout);
1576                 fflush(stdout);
1577                 journal_blocks = figure_journal_size(journal_size, fs);
1578
1579                 if (journal_location_string)
1580                         journal_location =
1581                                 parse_num_blocks2(journal_location_string,
1582                                                   fs->super->s_log_block_size);
1583                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1584                                                    journal_location,
1585                                                    journal_flags);
1586                 if (retval) {
1587                         fprintf(stderr, "\n");
1588                         com_err(program_name, retval, "%s",
1589                                 _("\n\twhile trying to create journal file"));
1590                         return retval;
1591                 } else
1592                         fputs(_("done\n"), stdout);
1593                 /*
1594                  * If the filesystem wasn't mounted, we need to force
1595                  * the block group descriptors out.
1596                  */
1597                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1598                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1599         }
1600         print_check_message(fs->super->s_max_mnt_count,
1601                             fs->super->s_checkinterval);
1602         return 0;
1603
1604 err:
1605         free(journal_device);
1606         return 1;
1607 }
1608
1609 static void handle_quota_options(ext2_filsys fs)
1610 {
1611         errcode_t retval;
1612         quota_ctx_t qctx;
1613         ext2_ino_t qf_ino;
1614         enum quota_type qtype;
1615         unsigned int qtype_bits = 0;
1616         int need_dirty = 0;
1617
1618         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1619                 if (quota_enable[qtype] != 0)
1620                         break;
1621         if (qtype == MAXQUOTAS)
1622                 /* Nothing to do. */
1623                 return;
1624
1625         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1626             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1627                 fprintf(stderr, _("Cannot enable project quota; "
1628                                   "inode size too small.\n"));
1629                 exit(1);
1630         }
1631
1632         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1633                 if (quota_enable[qtype] == QOPT_ENABLE)
1634                         qtype_bits |= 1 << qtype;
1635         }
1636
1637         retval = quota_init_context(&qctx, fs, qtype_bits);
1638         if (retval) {
1639                 com_err(program_name, retval,
1640                         _("while initializing quota context in support library"));
1641                 exit(1);
1642         }
1643
1644         if (qtype_bits)
1645                 quota_compute_usage(qctx);
1646
1647         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1648                 if (quota_enable[qtype] == QOPT_ENABLE &&
1649                     *quota_sb_inump(fs->super, qtype) == 0) {
1650                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1651                                 retval = quota_update_limits(qctx, qf_ino,
1652                                                              qtype);
1653                                 if (retval) {
1654                                         com_err(program_name, retval,
1655                                                 _("while updating quota limits (%d)"),
1656                                                 qtype);
1657                                         exit(1);
1658                                 }
1659                         }
1660                         retval = quota_write_inode(qctx, 1 << qtype);
1661                         if (retval) {
1662                                 com_err(program_name, retval,
1663                                         _("while writing quota file (%d)"),
1664                                         qtype);
1665                                 exit(1);
1666                         }
1667                         /* Enable Quota feature if one of quota enabled */
1668                         if (!ext2fs_has_feature_quota(fs->super)) {
1669                                 ext2fs_set_feature_quota(fs->super);
1670                                 need_dirty = 1;
1671                         }
1672                         if (qtype == PRJQUOTA &&
1673                             !ext2fs_has_feature_project(fs->super)) {
1674                                 ext2fs_set_feature_project(fs->super);
1675                                 need_dirty = 1;
1676                         }
1677                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1678                         retval = quota_remove_inode(fs, qtype);
1679                         if (retval) {
1680                                 com_err(program_name, retval,
1681                                         _("while removing quota file (%d)"),
1682                                         qtype);
1683                                 exit(1);
1684                         }
1685                         if (qtype == PRJQUOTA) {
1686                                 ext2fs_clear_feature_project(fs->super);
1687                                 need_dirty = 1;
1688                         }
1689                 }
1690         }
1691
1692         quota_release_context(&qctx);
1693         /* Clear Quota feature if all quota types disabled. */
1694         if (!qtype_bits) {
1695                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1696                         if (*quota_sb_inump(fs->super, qtype))
1697                                 break;
1698                 if (qtype == MAXQUOTAS) {
1699                         ext2fs_clear_feature_quota(fs->super);
1700                         need_dirty = 1;
1701                 }
1702
1703         }
1704         if (need_dirty)
1705                 ext2fs_mark_super_dirty(fs);
1706         return;
1707 }
1708
1709 static int option_handle_function(char *token)
1710 {
1711         if (strncmp(token, "usr", 3) == 0) {
1712                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1713         } else if (strncmp(token, "^usr", 4) == 0) {
1714                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1715         } else if (strncmp(token, "grp", 3) == 0) {
1716                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1717         } else if (strncmp(token, "^grp", 4) == 0) {
1718                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1719         } else if (strncmp(token, "prj", 3) == 0) {
1720                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1721         } else if (strncmp(token, "^prj", 4) == 0) {
1722                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1723         } else {
1724                 fputs(_("\nBad quota options specified.\n\n"
1725                         "Following valid quota options are available "
1726                         "(pass by separating with comma):\n"
1727                         "\t[^]usr[quota]\n"
1728                         "\t[^]grp[quota]\n"
1729                         "\t[^]prj[quota]\n"
1730                         "\n\n"), stderr);
1731                 return 1;
1732         }
1733         return 0;
1734 }
1735
1736 static void parse_e2label_options(int argc, char ** argv)
1737 {
1738         if ((argc < 2) || (argc > 3)) {
1739                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1740                 exit(1);
1741         }
1742         io_options = strchr(argv[1], '?');
1743         if (io_options)
1744                 *io_options++ = 0;
1745         device_name = blkid_get_devname(NULL, argv[1], NULL);
1746         if (!device_name) {
1747                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1748                         argv[1]);
1749                 exit(1);
1750         }
1751         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1752         if (argc == 3) {
1753                 open_flag |= EXT2_FLAG_RW;
1754                 L_flag = 1;
1755                 new_label = argv[2];
1756         } else
1757                 print_label++;
1758 }
1759
1760 static time_t parse_time(char *str)
1761 {
1762         struct  tm      ts;
1763
1764         if (strcmp(str, "now") == 0) {
1765                 return (time(0));
1766         }
1767         memset(&ts, 0, sizeof(ts));
1768 #ifdef HAVE_STRPTIME
1769         strptime(str, "%Y%m%d%H%M%S", &ts);
1770 #else
1771         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1772                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1773         ts.tm_year -= 1900;
1774         ts.tm_mon -= 1;
1775         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1776             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1777             ts.tm_min > 59 || ts.tm_sec > 61)
1778                 ts.tm_mday = 0;
1779 #endif
1780         if (ts.tm_mday == 0) {
1781                 com_err(program_name, 0,
1782                         _("Couldn't parse date/time specifier: %s"),
1783                         str);
1784                 usage();
1785         }
1786         ts.tm_isdst = -1;
1787         return (mktime(&ts));
1788 }
1789
1790 static void parse_tune2fs_options(int argc, char **argv)
1791 {
1792         int c;
1793         char *tmp;
1794         struct group *gr;
1795         struct passwd *pw;
1796         int ret;
1797         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1798
1799         open_flag = 0;
1800         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1801         while ((c = getopt(argc, argv, optstring)) != EOF)
1802                 switch (c) {
1803                 case 'c':
1804                         max_mount_count = strtol(optarg, &tmp, 0);
1805                         if (*tmp || max_mount_count > 16000) {
1806                                 com_err(program_name, 0,
1807                                         _("bad mounts count - %s"),
1808                                         optarg);
1809                                 usage();
1810                         }
1811                         if (max_mount_count == 0)
1812                                 max_mount_count = -1;
1813                         c_flag = 1;
1814                         open_flag = EXT2_FLAG_RW;
1815                         break;
1816                 case 'C':
1817                         mount_count = strtoul(optarg, &tmp, 0);
1818                         if (*tmp || mount_count > 16000) {
1819                                 com_err(program_name, 0,
1820                                         _("bad mounts count - %s"),
1821                                         optarg);
1822                                 usage();
1823                         }
1824                         C_flag = 1;
1825                         open_flag = EXT2_FLAG_RW;
1826                         break;
1827                 case 'e':
1828                         if (strcmp(optarg, "continue") == 0)
1829                                 errors = EXT2_ERRORS_CONTINUE;
1830                         else if (strcmp(optarg, "remount-ro") == 0)
1831                                 errors = EXT2_ERRORS_RO;
1832                         else if (strcmp(optarg, "panic") == 0)
1833                                 errors = EXT2_ERRORS_PANIC;
1834                         else {
1835                                 com_err(program_name, 0,
1836                                         _("bad error behavior - %s"),
1837                                         optarg);
1838                                 usage();
1839                         }
1840                         e_flag = 1;
1841                         open_flag = EXT2_FLAG_RW;
1842                         break;
1843                 case 'E':
1844                         extended_cmd = optarg;
1845                         open_flag |= EXT2_FLAG_RW;
1846                         break;
1847                 case 'f': /* Force */
1848                         f_flag++;
1849                         break;
1850                 case 'g':
1851                         resgid = strtoul(optarg, &tmp, 0);
1852                         if (*tmp) {
1853                                 gr = getgrnam(optarg);
1854                                 if (gr == NULL)
1855                                         tmp = optarg;
1856                                 else {
1857                                         resgid = gr->gr_gid;
1858                                         *tmp = 0;
1859                                 }
1860                         }
1861                         if (*tmp) {
1862                                 com_err(program_name, 0,
1863                                         _("bad gid/group name - %s"),
1864                                         optarg);
1865                                 usage();
1866                         }
1867                         g_flag = 1;
1868                         open_flag = EXT2_FLAG_RW;
1869                         break;
1870                 case 'i':
1871                         interval = strtoul(optarg, &tmp, 0);
1872                         switch (*tmp) {
1873                         case 's':
1874                                 tmp++;
1875                                 break;
1876                         case '\0':
1877                         case 'd':
1878                         case 'D': /* days */
1879                                 interval *= 86400;
1880                                 if (*tmp != '\0')
1881                                         tmp++;
1882                                 break;
1883                         case 'm':
1884                         case 'M': /* months! */
1885                                 interval *= 86400 * 30;
1886                                 tmp++;
1887                                 break;
1888                         case 'w':
1889                         case 'W': /* weeks */
1890                                 interval *= 86400 * 7;
1891                                 tmp++;
1892                                 break;
1893                         }
1894                         if (*tmp) {
1895                                 com_err(program_name, 0,
1896                                         _("bad interval - %s"), optarg);
1897                                 usage();
1898                         }
1899                         i_flag = 1;
1900                         open_flag = EXT2_FLAG_RW;
1901                         break;
1902                 case 'j':
1903                         if (!journal_size)
1904                                 journal_size = -1;
1905                         open_flag = EXT2_FLAG_RW;
1906                         break;
1907                 case 'J':
1908                         parse_journal_opts(optarg);
1909                         open_flag = EXT2_FLAG_RW;
1910                         break;
1911                 case 'l':
1912                         l_flag = 1;
1913                         break;
1914                 case 'L':
1915                         new_label = optarg;
1916                         L_flag = 1;
1917                         open_flag |= EXT2_FLAG_RW |
1918                                 EXT2_FLAG_JOURNAL_DEV_OK;
1919                         break;
1920                 case 'm':
1921                         reserved_ratio = strtod(optarg, &tmp);
1922                         if (*tmp || reserved_ratio > 50 ||
1923                             reserved_ratio < 0) {
1924                                 com_err(program_name, 0,
1925                                         _("bad reserved block ratio - %s"),
1926                                         optarg);
1927                                 usage();
1928                         }
1929                         m_flag = 1;
1930                         open_flag = EXT2_FLAG_RW;
1931                         break;
1932                 case 'M':
1933                         new_last_mounted = optarg;
1934                         M_flag = 1;
1935                         open_flag = EXT2_FLAG_RW;
1936                         break;
1937                 case 'o':
1938                         if (mntopts_cmd) {
1939                                 com_err(program_name, 0, "%s",
1940                                         _("-o may only be specified once"));
1941                                 usage();
1942                         }
1943                         mntopts_cmd = optarg;
1944                         open_flag = EXT2_FLAG_RW;
1945                         break;
1946                 case 'O':
1947                         if (features_cmd) {
1948                                 com_err(program_name, 0, "%s",
1949                                         _("-O may only be specified once"));
1950                                 usage();
1951                         }
1952                         features_cmd = optarg;
1953                         open_flag = EXT2_FLAG_RW;
1954                         break;
1955                 case 'Q':
1956                         Q_flag = 1;
1957                         ret = parse_quota_opts(optarg, option_handle_function);
1958                         if (ret)
1959                                 exit(1);
1960                         open_flag = EXT2_FLAG_RW;
1961                         break;
1962                 case 'r':
1963                         reserved_blocks = strtoul(optarg, &tmp, 0);
1964                         if (*tmp) {
1965                                 com_err(program_name, 0,
1966                                         _("bad reserved blocks count - %s"),
1967                                         optarg);
1968                                 usage();
1969                         }
1970                         r_flag = 1;
1971                         open_flag = EXT2_FLAG_RW;
1972                         break;
1973                 case 's': /* Deprecated */
1974                         s_flag = atoi(optarg);
1975                         open_flag = EXT2_FLAG_RW;
1976                         break;
1977                 case 'T':
1978                         T_flag = 1;
1979                         last_check_time = parse_time(optarg);
1980                         open_flag = EXT2_FLAG_RW;
1981                         break;
1982                 case 'u':
1983                                 resuid = strtoul(optarg, &tmp, 0);
1984                                 if (*tmp) {
1985                                         pw = getpwnam(optarg);
1986                                         if (pw == NULL)
1987                                                 tmp = optarg;
1988                                         else {
1989                                                 resuid = pw->pw_uid;
1990                                                 *tmp = 0;
1991                                         }
1992                                 }
1993                                 if (*tmp) {
1994                                         com_err(program_name, 0,
1995                                                 _("bad uid/user name - %s"),
1996                                                 optarg);
1997                                         usage();
1998                                 }
1999                                 u_flag = 1;
2000                                 open_flag = EXT2_FLAG_RW;
2001                                 break;
2002                 case 'U':
2003                         new_UUID = optarg;
2004                         U_flag = 1;
2005                         open_flag = EXT2_FLAG_RW |
2006                                 EXT2_FLAG_JOURNAL_DEV_OK;
2007                         break;
2008                 case 'I':
2009                         new_inode_size = strtoul(optarg, &tmp, 0);
2010                         if (*tmp) {
2011                                 com_err(program_name, 0,
2012                                         _("bad inode size - %s"),
2013                                         optarg);
2014                                 usage();
2015                         }
2016                         if (!((new_inode_size &
2017                                (new_inode_size - 1)) == 0)) {
2018                                 com_err(program_name, 0,
2019                                         _("Inode size must be a "
2020                                           "power of two- %s"),
2021                                         optarg);
2022                                 usage();
2023                         }
2024                         open_flag = EXT2_FLAG_RW;
2025                         I_flag = 1;
2026                         break;
2027                 case 'z':
2028                         undo_file = optarg;
2029                         break;
2030                 default:
2031                         usage();
2032                 }
2033         if (optind < argc - 1 || optind == argc)
2034                 usage();
2035         if (!open_flag && !l_flag)
2036                 usage();
2037         io_options = strchr(argv[optind], '?');
2038         if (io_options)
2039                 *io_options++ = 0;
2040         device_name = blkid_get_devname(NULL, argv[optind], NULL);
2041         if (!device_name) {
2042                 com_err(program_name, 0, _("Unable to resolve '%s'"),
2043                         argv[optind]);
2044                 exit(1);
2045         }
2046 }
2047
2048 #ifdef CONFIG_BUILD_FINDFS
2049 void do_findfs(int argc, char **argv)
2050 {
2051         char    *dev;
2052
2053         if ((argc != 2) ||
2054             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2055                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2056                 exit(2);
2057         }
2058         dev = blkid_get_devname(NULL, argv[1], NULL);
2059         if (!dev) {
2060                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2061                         argv[1]);
2062                 exit(1);
2063         }
2064         puts(dev);
2065         exit(0);
2066 }
2067 #endif
2068
2069 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2070 {
2071         char    *buf, *token, *next, *p, *arg;
2072         int     len, hash_alg;
2073         int     r_usage = 0;
2074
2075         len = strlen(opts);
2076         buf = malloc(len+1);
2077         if (!buf) {
2078                 fprintf(stderr, "%s",
2079                         _("Couldn't allocate memory to parse options!\n"));
2080                 return 1;
2081         }
2082         strcpy(buf, opts);
2083         for (token = buf; token && *token; token = next) {
2084                 p = strchr(token, ',');
2085                 next = 0;
2086                 if (p) {
2087                         *p = 0;
2088                         next = p+1;
2089                 }
2090                 arg = strchr(token, '=');
2091                 if (arg) {
2092                         *arg = 0;
2093                         arg++;
2094                 }
2095                 if (strcmp(token, "clear-mmp") == 0 ||
2096                     strcmp(token, "clear_mmp") == 0) {
2097                         clear_mmp = 1;
2098                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2099                         unsigned long intv;
2100                         if (!arg) {
2101                                 r_usage++;
2102                                 continue;
2103                         }
2104                         intv = strtoul(arg, &p, 0);
2105                         if (*p) {
2106                                 fprintf(stderr,
2107                                         _("Invalid mmp_update_interval: %s\n"),
2108                                         arg);
2109                                 r_usage++;
2110                                 continue;
2111                         }
2112                         if (intv == 0) {
2113                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2114                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2115                                 fprintf(stderr,
2116                                         _("mmp_update_interval too big: %lu\n"),
2117                                         intv);
2118                                 r_usage++;
2119                                 continue;
2120                         }
2121                         printf(P_("Setting multiple mount protection update "
2122                                   "interval to %lu second\n",
2123                                   "Setting multiple mount protection update "
2124                                   "interval to %lu seconds\n", intv),
2125                                intv);
2126                         fs->super->s_mmp_update_interval = intv;
2127                         ext2fs_mark_super_dirty(fs);
2128                 } else if (!strcmp(token, "force_fsck")) {
2129                         fs->super->s_state |= EXT2_ERROR_FS;
2130                         printf(_("Setting filesystem error flag to force fsck.\n"));
2131                         ext2fs_mark_super_dirty(fs);
2132                 } else if (!strcmp(token, "test_fs")) {
2133                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2134                         printf("Setting test filesystem flag\n");
2135                         ext2fs_mark_super_dirty(fs);
2136                 } else if (!strcmp(token, "^test_fs")) {
2137                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2138                         printf("Clearing test filesystem flag\n");
2139                         ext2fs_mark_super_dirty(fs);
2140                 } else if (strcmp(token, "stride") == 0) {
2141                         if (!arg) {
2142                                 r_usage++;
2143                                 continue;
2144                         }
2145                         stride = strtoul(arg, &p, 0);
2146                         if (*p) {
2147                                 fprintf(stderr,
2148                                         _("Invalid RAID stride: %s\n"),
2149                                         arg);
2150                                 r_usage++;
2151                                 continue;
2152                         }
2153                         stride_set = 1;
2154                 } else if (strcmp(token, "stripe-width") == 0 ||
2155                            strcmp(token, "stripe_width") == 0) {
2156                         if (!arg) {
2157                                 r_usage++;
2158                                 continue;
2159                         }
2160                         stripe_width = strtoul(arg, &p, 0);
2161                         if (*p) {
2162                                 fprintf(stderr,
2163                                         _("Invalid RAID stripe-width: %s\n"),
2164                                         arg);
2165                                 r_usage++;
2166                                 continue;
2167                         }
2168                         stripe_width_set = 1;
2169                 } else if (strcmp(token, "hash_alg") == 0 ||
2170                            strcmp(token, "hash-alg") == 0) {
2171                         if (!arg) {
2172                                 r_usage++;
2173                                 continue;
2174                         }
2175                         hash_alg = e2p_string2hash(arg);
2176                         if (hash_alg < 0) {
2177                                 fprintf(stderr,
2178                                         _("Invalid hash algorithm: %s\n"),
2179                                         arg);
2180                                 r_usage++;
2181                                 continue;
2182                         }
2183                         fs->super->s_def_hash_version = hash_alg;
2184                         printf(_("Setting default hash algorithm "
2185                                  "to %s (%d)\n"),
2186                                arg, hash_alg);
2187                         ext2fs_mark_super_dirty(fs);
2188                 } else if (!strcmp(token, "mount_opts")) {
2189                         if (!arg) {
2190                                 r_usage++;
2191                                 continue;
2192                         }
2193                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2194                                 fprintf(stderr,
2195                                         "Extended mount options too long\n");
2196                                 continue;
2197                         }
2198                         ext_mount_opts = strdup(arg);
2199                 } else
2200                         r_usage++;
2201         }
2202         if (r_usage) {
2203                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2204                         "Extended options are separated by commas, "
2205                         "and may take an argument which\n"
2206                         "\tis set off by an equals ('=') sign.\n\n"
2207                         "Valid extended options are:\n"
2208                         "\tclear_mmp\n"
2209                         "\thash_alg=<hash algorithm>\n"
2210                         "\tmount_opts=<extended default mount options>\n"
2211                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2212                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2213                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2214                         "\tforce_fsck\n"
2215                         "\ttest_fs\n"
2216                         "\t^test_fs\n"));
2217                 free(buf);
2218                 return 1;
2219         }
2220         free(buf);
2221
2222         return 0;
2223 }
2224
2225 /*
2226  * Fill in the block bitmap bmap with the information regarding the
2227  * blocks to be moved
2228  */
2229 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2230                             ext2fs_block_bitmap bmap)
2231 {
2232         dgrp_t i;
2233         int retval;
2234         ext2_badblocks_list bb_list = 0;
2235         blk64_t j, needed_blocks = 0;
2236         blk64_t start_blk, end_blk;
2237
2238         retval = ext2fs_read_bb_inode(fs, &bb_list);
2239         if (retval)
2240                 return retval;
2241
2242         for (i = 0; i < fs->group_desc_count; i++) {
2243                 start_blk = ext2fs_inode_table_loc(fs, i) +
2244                                         fs->inode_blocks_per_group;
2245
2246                 end_blk = ext2fs_inode_table_loc(fs, i) +
2247                                         new_ino_blks_per_grp;
2248
2249                 for (j = start_blk; j < end_blk; j++) {
2250                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2251                                 /*
2252                                  * IF the block is a bad block we fail
2253                                  */
2254                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2255                                         ext2fs_badblocks_list_free(bb_list);
2256                                         return ENOSPC;
2257                                 }
2258
2259                                 ext2fs_mark_block_bitmap2(bmap, j);
2260                         } else {
2261                                 /*
2262                                  * We are going to use this block for
2263                                  * inode table. So mark them used.
2264                                  */
2265                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2266                         }
2267                 }
2268                 needed_blocks += end_blk - start_blk;
2269         }
2270
2271         ext2fs_badblocks_list_free(bb_list);
2272         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2273                 return ENOSPC;
2274
2275         return 0;
2276 }
2277
2278 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2279 {
2280         dgrp_t group;
2281         group = ext2fs_group_of_blk2(fs, blk);
2282         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2283                 return 1;
2284         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2285                 return 1;
2286         return 0;
2287 }
2288
2289 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2290 {
2291         blk64_t start_blk, end_blk;
2292         start_blk = fs->super->s_first_data_block +
2293                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2294         /*
2295          * We cannot get new block beyond end_blk for for the last block group
2296          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2297          */
2298         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2299         if (blk >= start_blk && blk <= end_blk)
2300                 return 1;
2301         return 0;
2302 }
2303
2304 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2305 {
2306
2307         char *buf;
2308         dgrp_t group = 0;
2309         errcode_t retval;
2310         int meta_data = 0;
2311         blk64_t blk, new_blk, goal;
2312         struct blk_move *bmv;
2313
2314         retval = ext2fs_get_mem(fs->blocksize, &buf);
2315         if (retval)
2316                 return retval;
2317
2318         for (new_blk = blk = fs->super->s_first_data_block;
2319              blk < ext2fs_blocks_count(fs->super); blk++) {
2320                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2321                         continue;
2322
2323                 if (ext2fs_is_meta_block(fs, blk)) {
2324                         /*
2325                          * If the block is mapping a fs meta data block
2326                          * like group desc/block bitmap/inode bitmap. We
2327                          * should find a block in the same group and fix
2328                          * the respective fs metadata pointers. Otherwise
2329                          * fail
2330                          */
2331                         group = ext2fs_group_of_blk2(fs, blk);
2332                         goal = ext2fs_group_first_block2(fs, group);
2333                         meta_data = 1;
2334
2335                 } else {
2336                         goal = new_blk;
2337                 }
2338                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2339                 if (retval)
2340                         goto err_out;
2341
2342                 /* new fs meta data block should be in the same group */
2343                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2344                         retval = ENOSPC;
2345                         goto err_out;
2346                 }
2347
2348                 /* Mark this block as allocated */
2349                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2350
2351                 /* Add it to block move list */
2352                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2353                 if (retval)
2354                         goto err_out;
2355
2356                 bmv->old_loc = blk;
2357                 bmv->new_loc = new_blk;
2358
2359                 list_add(&(bmv->list), &blk_move_list);
2360
2361                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2362                 if (retval)
2363                         goto err_out;
2364
2365                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2366                 if (retval)
2367                         goto err_out;
2368         }
2369
2370 err_out:
2371         ext2fs_free_mem(&buf);
2372         return retval;
2373 }
2374
2375 static blk64_t translate_block(blk64_t blk)
2376 {
2377         struct list_head *entry;
2378         struct blk_move *bmv;
2379
2380         list_for_each(entry, &blk_move_list) {
2381                 bmv = list_entry(entry, struct blk_move, list);
2382                 if (bmv->old_loc == blk)
2383                         return bmv->new_loc;
2384         }
2385
2386         return 0;
2387 }
2388
2389 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2390                          blk64_t *block_nr,
2391                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2392                          blk64_t ref_block EXT2FS_ATTR((unused)),
2393                          int ref_offset EXT2FS_ATTR((unused)),
2394                          void *priv_data)
2395 {
2396         int ret = 0;
2397         blk64_t new_blk;
2398         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2399
2400         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2401                 return 0;
2402         new_blk = translate_block(*block_nr);
2403         if (new_blk) {
2404                 *block_nr = new_blk;
2405                 /*
2406                  * This will force the ext2fs_write_inode in the iterator
2407                  */
2408                 ret |= BLOCK_CHANGED;
2409         }
2410
2411         return ret;
2412 }
2413
2414 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2415 {
2416         errcode_t retval = 0;
2417         ext2_ino_t ino;
2418         blk64_t blk;
2419         char *block_buf = 0;
2420         struct ext2_inode inode;
2421         ext2_inode_scan scan = NULL;
2422
2423         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2424         if (retval)
2425                 return retval;
2426
2427         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2428         if (retval)
2429                 goto err_out;
2430
2431         while (1) {
2432                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2433                 if (retval)
2434                         goto err_out;
2435
2436                 if (!ino)
2437                         break;
2438
2439                 if (inode.i_links_count == 0)
2440                         continue; /* inode not in use */
2441
2442                 /* FIXME!!
2443                  * If we end up modifying the journal inode
2444                  * the sb->s_jnl_blocks will differ. But a
2445                  * subsequent e2fsck fixes that.
2446                  * Do we need to fix this ??
2447                  */
2448
2449                 if (ext2fs_file_acl_block(fs, &inode) &&
2450                     ext2fs_test_block_bitmap2(bmap,
2451                                         ext2fs_file_acl_block(fs, &inode))) {
2452                         blk = translate_block(ext2fs_file_acl_block(fs,
2453                                                                     &inode));
2454                         if (!blk)
2455                                 continue;
2456
2457                         ext2fs_file_acl_block_set(fs, &inode, blk);
2458
2459                         /*
2460                          * Write the inode to disk so that inode table
2461                          * resizing can work
2462                          */
2463                         retval = ext2fs_write_inode(fs, ino, &inode);
2464                         if (retval)
2465                                 goto err_out;
2466                 }
2467
2468                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2469                         continue;
2470
2471                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2472                                                process_block, bmap);
2473                 if (retval)
2474                         goto err_out;
2475
2476         }
2477
2478 err_out:
2479         ext2fs_free_mem(&block_buf);
2480         ext2fs_close_inode_scan(scan);
2481
2482         return retval;
2483 }
2484
2485 /*
2486  * We need to scan for inode and block bitmaps that may need to be
2487  * moved.  This can take place if the filesystem was formatted for
2488  * RAID arrays using the mke2fs's extended option "stride".
2489  */
2490 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2491 {
2492         dgrp_t i;
2493         blk64_t blk, new_blk;
2494
2495         for (i = 0; i < fs->group_desc_count; i++) {
2496                 blk = ext2fs_block_bitmap_loc(fs, i);
2497                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2498                         new_blk = translate_block(blk);
2499                         if (!new_blk)
2500                                 continue;
2501                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2502                 }
2503
2504                 blk = ext2fs_inode_bitmap_loc(fs, i);
2505                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2506                         new_blk = translate_block(blk);
2507                         if (!new_blk)
2508                                 continue;
2509                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2510                 }
2511         }
2512         return 0;
2513 }
2514
2515 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2516 {
2517         dgrp_t i;
2518         blk64_t blk;
2519         errcode_t retval;
2520         int new_ino_blks_per_grp;
2521         unsigned int j;
2522         char *old_itable = NULL, *new_itable = NULL;
2523         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2524         unsigned long old_ino_size;
2525         int old_itable_size, new_itable_size;
2526
2527         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2528         old_ino_size = EXT2_INODE_SIZE(fs->super);
2529
2530         new_ino_blks_per_grp = ext2fs_div_ceil(
2531                                         EXT2_INODES_PER_GROUP(fs->super) *
2532                                         new_ino_size,
2533                                         fs->blocksize);
2534
2535         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2536
2537         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2538         if (retval)
2539                 return retval;
2540
2541         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2542         if (retval)
2543                 goto err_out;
2544
2545         tmp_old_itable = old_itable;
2546         tmp_new_itable = new_itable;
2547
2548         for (i = 0; i < fs->group_desc_count; i++) {
2549                 blk = ext2fs_inode_table_loc(fs, i);
2550                 retval = io_channel_read_blk64(fs->io, blk,
2551                                 fs->inode_blocks_per_group, old_itable);
2552                 if (retval)
2553                         goto err_out;
2554
2555                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2556                         memcpy(new_itable, old_itable, old_ino_size);
2557
2558                         memset(new_itable+old_ino_size, 0,
2559                                         new_ino_size - old_ino_size);
2560
2561                         new_itable += new_ino_size;
2562                         old_itable += old_ino_size;
2563                 }
2564
2565                 /* reset the pointer */
2566                 old_itable = tmp_old_itable;
2567                 new_itable = tmp_new_itable;
2568
2569                 retval = io_channel_write_blk64(fs->io, blk,
2570                                         new_ino_blks_per_grp, new_itable);
2571                 if (retval)
2572                         goto err_out;
2573         }
2574
2575         /* Update the meta data */
2576         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2577         ext2fs_free_inode_cache(fs->icache);
2578         fs->icache = 0;
2579         fs->super->s_inode_size = new_ino_size;
2580
2581 err_out:
2582         if (old_itable)
2583                 ext2fs_free_mem(&old_itable);
2584
2585         if (new_itable)
2586                 ext2fs_free_mem(&new_itable);
2587
2588         return retval;
2589 }
2590
2591 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2592 {
2593         blk64_t         blk;
2594         ext2_ino_t      ino;
2595         unsigned int    group = 0;
2596         unsigned int    count = 0;
2597         int             total_free = 0;
2598         int             group_free = 0;
2599
2600         /*
2601          * First calculate the block statistics
2602          */
2603         for (blk = fs->super->s_first_data_block;
2604              blk < ext2fs_blocks_count(fs->super); blk++) {
2605                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2606                         group_free++;
2607                         total_free++;
2608                 }
2609                 count++;
2610                 if ((count == fs->super->s_blocks_per_group) ||
2611                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2612                         ext2fs_bg_free_blocks_count_set(fs, group++,
2613                                                         group_free);
2614                         count = 0;
2615                         group_free = 0;
2616                 }
2617         }
2618         total_free = EXT2FS_C2B(fs, total_free);
2619         ext2fs_free_blocks_count_set(fs->super, total_free);
2620
2621         /*
2622          * Next, calculate the inode statistics
2623          */
2624         group_free = 0;
2625         total_free = 0;
2626         count = 0;
2627         group = 0;
2628
2629         /* Protect loop from wrap-around if s_inodes_count maxed */
2630         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2631                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2632                         group_free++;
2633                         total_free++;
2634                 }
2635                 count++;
2636                 if ((count == fs->super->s_inodes_per_group) ||
2637                     (ino == fs->super->s_inodes_count)) {
2638                         ext2fs_bg_free_inodes_count_set(fs, group++,
2639                                                         group_free);
2640                         count = 0;
2641                         group_free = 0;
2642                 }
2643         }
2644         fs->super->s_free_inodes_count = total_free;
2645         ext2fs_mark_super_dirty(fs);
2646         return 0;
2647 }
2648
2649 #define list_for_each_safe(pos, pnext, head) \
2650         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2651              pos = pnext, pnext = pos->next)
2652
2653 static void free_blk_move_list(void)
2654 {
2655         struct list_head *entry, *tmp;
2656         struct blk_move *bmv;
2657
2658         list_for_each_safe(entry, tmp, &blk_move_list) {
2659                 bmv = list_entry(entry, struct blk_move, list);
2660                 list_del(entry);
2661                 ext2fs_free_mem(&bmv);
2662         }
2663         return;
2664 }
2665
2666 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2667 {
2668         errcode_t retval;
2669         int new_ino_blks_per_grp;
2670         ext2fs_block_bitmap bmap;
2671
2672         retval = ext2fs_read_inode_bitmap(fs);
2673         if (retval) {
2674                 fputs(_("Failed to read inode bitmap\n"), stderr);
2675                 return retval;
2676         }
2677         retval = ext2fs_read_block_bitmap(fs);
2678         if (retval) {
2679                 fputs(_("Failed to read block bitmap\n"), stderr);
2680                 return retval;
2681         }
2682         INIT_LIST_HEAD(&blk_move_list);
2683
2684
2685         new_ino_blks_per_grp = ext2fs_div_ceil(
2686                                         EXT2_INODES_PER_GROUP(fs->super)*
2687                                         new_size,
2688                                         fs->blocksize);
2689
2690         /* We may change the file system.
2691          * Mark the file system as invalid so that
2692          * the user is prompted to run fsck.
2693          */
2694         fs->super->s_state &= ~EXT2_VALID_FS;
2695
2696         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2697                                                 &bmap);
2698         if (retval) {
2699                 fputs(_("Failed to allocate block bitmap when "
2700                                 "increasing inode size\n"), stderr);
2701                 return retval;
2702         }
2703         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2704         if (retval) {
2705                 fputs(_("Not enough space to increase inode size \n"), stderr);
2706                 goto err_out;
2707         }
2708         retval = move_block(fs, bmap);
2709         if (retval) {
2710                 fputs(_("Failed to relocate blocks during inode resize \n"),
2711                       stderr);
2712                 goto err_out;
2713         }
2714         retval = inode_scan_and_fix(fs, bmap);
2715         if (retval)
2716                 goto err_out_undo;
2717
2718         retval = group_desc_scan_and_fix(fs, bmap);
2719         if (retval)
2720                 goto err_out_undo;
2721
2722         retval = expand_inode_table(fs, new_size);
2723         if (retval)
2724                 goto err_out_undo;
2725
2726         ext2fs_calculate_summary_stats(fs);
2727
2728         fs->super->s_state |= EXT2_VALID_FS;
2729         /* mark super block and block bitmap as dirty */
2730         ext2fs_mark_super_dirty(fs);
2731         ext2fs_mark_bb_dirty(fs);
2732
2733 err_out:
2734         free_blk_move_list();
2735         ext2fs_free_block_bitmap(bmap);
2736
2737         return retval;
2738
2739 err_out_undo:
2740         free_blk_move_list();
2741         ext2fs_free_block_bitmap(bmap);
2742         fputs(_("Error in resizing the inode size.\n"
2743                         "Run e2undo to undo the "
2744                         "file system changes. \n"), stderr);
2745
2746         return retval;
2747 }
2748
2749 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2750 {
2751         errcode_t retval = 0;
2752         const char *tdb_dir;
2753         char *tdb_file = NULL;
2754         char *dev_name, *tmp_name;
2755
2756         /* (re)open a specific undo file */
2757         if (undo_file && undo_file[0] != 0) {
2758                 retval = set_undo_io_backing_manager(*io_ptr);
2759                 if (retval)
2760                         goto err;
2761                 *io_ptr = undo_io_manager;
2762                 retval = set_undo_io_backup_file(undo_file);
2763                 if (retval)
2764                         goto err;
2765                 printf(_("Overwriting existing filesystem; this can be undone "
2766                          "using the command:\n"
2767                          "    e2undo %s %s\n\n"),
2768                          undo_file, name);
2769                 return retval;
2770         }
2771
2772         /*
2773          * Configuration via a conf file would be
2774          * nice
2775          */
2776         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2777         if (!tdb_dir)
2778                 tdb_dir = "/var/lib/e2fsprogs";
2779
2780         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2781             access(tdb_dir, W_OK))
2782                 return 0;
2783
2784         tmp_name = strdup(name);
2785         if (!tmp_name)
2786                 goto errout;
2787         dev_name = basename(tmp_name);
2788         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2789         if (!tdb_file) {
2790                 free(tmp_name);
2791                 goto errout;
2792         }
2793         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2794         free(tmp_name);
2795
2796         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2797                 retval = errno;
2798                 com_err(program_name, retval,
2799                         _("while trying to delete %s"), tdb_file);
2800                 goto errout;
2801         }
2802
2803         retval = set_undo_io_backing_manager(*io_ptr);
2804         if (retval)
2805                 goto errout;
2806         *io_ptr = undo_io_manager;
2807         retval = set_undo_io_backup_file(tdb_file);
2808         if (retval)
2809                 goto errout;
2810         printf(_("Overwriting existing filesystem; this can be undone "
2811                  "using the command:\n"
2812                  "    e2undo %s %s\n\n"),
2813                  tdb_file, name);
2814
2815         free(tdb_file);
2816         return 0;
2817 errout:
2818         free(tdb_file);
2819 err:
2820         com_err("tune2fs", retval, "while trying to setup undo file\n");
2821         return retval;
2822 }
2823
2824 static int
2825 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2826 {
2827         int retval, nr_users, start;
2828         journal_superblock_t *jsb;
2829         ext2_filsys jfs;
2830         __u8 *j_uuid;
2831         char *journal_path;
2832         char uuid[UUID_STR_SIZE];
2833         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2834
2835         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2836                 return 0;
2837
2838         uuid_unparse(sb->s_journal_uuid, uuid);
2839         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2840         if (!journal_path)
2841                 return 0;
2842
2843         retval = ext2fs_open2(journal_path, io_options,
2844                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2845                               0, 0, unix_io_manager, &jfs);
2846         if (retval) {
2847                 com_err(program_name, retval,
2848                         _("while trying to open %s"),
2849                         journal_path);
2850                 return retval;
2851         }
2852
2853         retval = get_journal_sb(jfs, buf);
2854         if (retval != 0) {
2855                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2856                         fprintf(stderr, _("%s is not a journal device.\n"),
2857                                 journal_path);
2858                 return retval;
2859         }
2860
2861         jsb = (journal_superblock_t *) buf;
2862         /* Find the filesystem UUID */
2863         nr_users = ntohl(jsb->s_nr_users);
2864         if (nr_users > JFS_USERS_MAX) {
2865                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2866                                  "is too high (%d).\n"), nr_users);
2867                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2868         }
2869
2870         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2871         if (j_uuid == NULL) {
2872                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2873                       stderr);
2874                 return EXT2_ET_LOAD_EXT_JOURNAL;
2875         }
2876
2877         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2878
2879         start = ext2fs_journal_sb_start(jfs->blocksize);
2880         /* Write back the journal superblock */
2881         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2882         if (retval != 0) {
2883                 com_err(program_name, retval,
2884                         "while writing journal superblock.");
2885                 return retval;
2886         }
2887
2888         ext2fs_close(jfs);
2889
2890         return 0;
2891 }
2892
2893 #ifndef BUILD_AS_LIB
2894 int main(int argc, char **argv)
2895 #else
2896 int tune2fs_main(int argc, char **argv)
2897 #endif  /* BUILD_AS_LIB */
2898 {
2899         errcode_t retval;
2900         ext2_filsys fs;
2901         struct ext2_super_block *sb;
2902         io_manager io_ptr, io_ptr_orig = NULL;
2903         int rc = 0;
2904         char default_undo_file[1] = { 0 };
2905
2906 #ifdef ENABLE_NLS
2907         setlocale(LC_MESSAGES, "");
2908         setlocale(LC_CTYPE, "");
2909         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2910         textdomain(NLS_CAT_NAME);
2911         set_com_err_gettext(gettext);
2912 #endif
2913         if (argc && *argv)
2914                 program_name = *argv;
2915         add_error_table(&et_ext2_error_table);
2916
2917 #ifdef CONFIG_BUILD_FINDFS
2918         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2919                 do_findfs(argc, argv);
2920 #endif
2921         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2922                 parse_e2label_options(argc, argv);
2923         else
2924                 parse_tune2fs_options(argc, argv);
2925
2926 #ifdef CONFIG_TESTIO_DEBUG
2927         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2928                 io_ptr = test_io_manager;
2929                 test_io_backing_manager = unix_io_manager;
2930         } else
2931 #endif
2932                 io_ptr = unix_io_manager;
2933
2934 retry_open:
2935         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2936                 open_flag |= EXT2_FLAG_SKIP_MMP;
2937
2938         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2939
2940         /* keep the filesystem struct around to dump MMP data */
2941         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2942
2943         retval = ext2fs_open2(device_name, io_options, open_flag,
2944                               0, 0, io_ptr, &fs);
2945         if (retval) {
2946                 com_err(program_name, retval,
2947                         _("while trying to open %s"),
2948                         device_name);
2949                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2950                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2951                         dump_mmp_msg(fs->mmp_buf,
2952                                      _("If you are sure the filesystem "
2953                                        "is not in use on any node, run:\n"
2954                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2955                 else if (retval == EXT2_ET_MMP_FAILED)
2956                         dump_mmp_msg(fs->mmp_buf, NULL);
2957                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2958                         fprintf(stderr,
2959                                 _("MMP block magic is bad. Try to fix it by "
2960                                   "running:\n'e2fsck -f %s'\n"), device_name);
2961                 else if (retval == EXT2_ET_BAD_MAGIC)
2962                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2963                 else if (retval != EXT2_ET_MMP_FAILED)
2964                         fprintf(stderr, "%s",
2965                              _("Couldn't find valid filesystem superblock.\n"));
2966
2967                 ext2fs_free(fs);
2968                 exit(1);
2969         }
2970         if (ext2fs_has_feature_journal_dev(fs->super)) {
2971                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2972                 ext2fs_free(fs);
2973                 exit(1);
2974         }
2975         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2976
2977         if (I_flag) {
2978                 /*
2979                  * Check the inode size is right so we can issue an
2980                  * error message and bail before setting up the tdb
2981                  * file.
2982                  */
2983                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2984                         fprintf(stderr, _("The inode size is already %lu\n"),
2985                                 new_inode_size);
2986                         rc = 1;
2987                         goto closefs;
2988                 }
2989                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2990                         fprintf(stderr, "%s",
2991                                 _("Shrinking inode size is not supported\n"));
2992                         rc = 1;
2993                         goto closefs;
2994                 }
2995                 if (new_inode_size > fs->blocksize) {
2996                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2997                                 new_inode_size, fs->blocksize);
2998                         rc = 1;
2999                         goto closefs;
3000                 }
3001                 check_fsck_needed(fs,
3002                         _("Resizing inodes could take some time."));
3003                 /*
3004                  * If inode resize is requested use the
3005                  * Undo I/O manager
3006                  */
3007                 undo_file = default_undo_file;
3008         }
3009
3010         /* Set up an undo file */
3011         if (undo_file && io_ptr_orig == NULL) {
3012                 io_ptr_orig = io_ptr;
3013                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3014                 if (retval) {
3015                         rc = 1;
3016                         goto closefs;
3017                 }
3018                 if (io_ptr != io_ptr_orig) {
3019                         ext2fs_close_free(&fs);
3020                         goto retry_open;
3021                 }
3022         }
3023
3024         sb = fs->super;
3025         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3026
3027         if (print_label) {
3028                 /* For e2label emulation */
3029                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
3030                        sb->s_volume_name);
3031                 remove_error_table(&et_ext2_error_table);
3032                 goto closefs;
3033         }
3034
3035         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3036         if (retval) {
3037                 com_err("ext2fs_check_if_mount", retval,
3038                         _("while determining whether %s is mounted."),
3039                         device_name);
3040                 rc = 1;
3041                 goto closefs;
3042         }
3043
3044 #ifdef NO_RECOVERY
3045         /* Warn if file system needs recovery and it is opened for writing. */
3046         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3047             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3048             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3049                 fprintf(stderr,
3050 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3051   "\te2fsck -E journal_only %s\n\n"
3052   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3053   "by journal recovery.\n"), device_name);
3054         }
3055 #else
3056         /* Recover the journal if possible. */
3057         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3058             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3059                 errcode_t err;
3060
3061                 printf(_("Recovering journal.\n"));
3062                 err = ext2fs_run_ext3_journal(&fs);
3063                 if (err) {
3064                         com_err("tune2fs", err, "while recovering journal.\n");
3065                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3066                         if (fs)
3067                                 ext2fs_close_free(&fs);
3068                         exit(1);
3069                 }
3070                 sb = fs->super;
3071         }
3072 #endif
3073
3074         /* Normally we only need to write out the superblock */
3075         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3076
3077         if (c_flag) {
3078                 sb->s_max_mnt_count = max_mount_count;
3079                 ext2fs_mark_super_dirty(fs);
3080                 printf(_("Setting maximal mount count to %d\n"),
3081                        max_mount_count);
3082         }
3083         if (C_flag) {
3084                 sb->s_mnt_count = mount_count;
3085                 ext2fs_mark_super_dirty(fs);
3086                 printf(_("Setting current mount count to %d\n"), mount_count);
3087         }
3088         if (e_flag) {
3089                 sb->s_errors = errors;
3090                 ext2fs_mark_super_dirty(fs);
3091                 printf(_("Setting error behavior to %d\n"), errors);
3092         }
3093         if (g_flag) {
3094                 sb->s_def_resgid = resgid;
3095                 ext2fs_mark_super_dirty(fs);
3096                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3097         }
3098         if (i_flag) {
3099                 if ((unsigned long long)interval >= (1ULL << 32)) {
3100                         com_err(program_name, 0,
3101                                 _("interval between checks is too big (%lu)"),
3102                                 interval);
3103                         rc = 1;
3104                         goto closefs;
3105                 }
3106                 sb->s_checkinterval = interval;
3107                 ext2fs_mark_super_dirty(fs);
3108                 printf(_("Setting interval between checks to %lu seconds\n"),
3109                        interval);
3110         }
3111         if (m_flag) {
3112                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3113                                           ext2fs_blocks_count(sb) / 100.0);
3114                 ext2fs_mark_super_dirty(fs);
3115                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3116                         reserved_ratio, ext2fs_r_blocks_count(sb));
3117         }
3118         if (r_flag) {
3119                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3120                         com_err(program_name, 0,
3121                                 _("reserved blocks count is too big (%llu)"),
3122                                 reserved_blocks);
3123                         rc = 1;
3124                         goto closefs;
3125                 }
3126                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3127                 ext2fs_mark_super_dirty(fs);
3128                 printf(_("Setting reserved blocks count to %llu\n"),
3129                        reserved_blocks);
3130         }
3131         if (s_flag == 1) {
3132                 if (ext2fs_has_feature_sparse_super(sb)) {
3133                         fputs(_("\nThe filesystem already has sparse "
3134                                 "superblocks.\n"), stderr);
3135                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3136                         fputs(_("\nSetting the sparse superblock flag not "
3137                                 "supported\nfor filesystems with "
3138                                 "the meta_bg feature enabled.\n"),
3139                                 stderr);
3140                         rc = 1;
3141                         goto closefs;
3142                 } else {
3143                         ext2fs_set_feature_sparse_super(sb);
3144                         sb->s_state &= ~EXT2_VALID_FS;
3145                         ext2fs_mark_super_dirty(fs);
3146                         printf(_("\nSparse superblock flag set.  %s"),
3147                                _(please_fsck));
3148                 }
3149         }
3150         if (s_flag == 0) {
3151                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3152                       stderr);
3153                 rc = 1;
3154                 goto closefs;
3155         }
3156         if (T_flag) {
3157                 sb->s_lastcheck = last_check_time;
3158                 ext2fs_mark_super_dirty(fs);
3159                 printf(_("Setting time filesystem last checked to %s\n"),
3160                        ctime(&last_check_time));
3161         }
3162         if (u_flag) {
3163                 sb->s_def_resuid = resuid;
3164                 ext2fs_mark_super_dirty(fs);
3165                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3166         }
3167         if (L_flag) {
3168                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3169                         fputs(_("Warning: label too long, truncating.\n"),
3170                               stderr);
3171                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3172                 strncpy(sb->s_volume_name, new_label,
3173                         sizeof(sb->s_volume_name));
3174                 ext2fs_mark_super_dirty(fs);
3175         }
3176         if (M_flag) {
3177                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3178                 strncpy(sb->s_last_mounted, new_last_mounted,
3179                         sizeof(sb->s_last_mounted));
3180                 ext2fs_mark_super_dirty(fs);
3181         }
3182         if (mntopts_cmd) {
3183                 rc = update_mntopts(fs, mntopts_cmd);
3184                 if (rc)
3185                         goto closefs;
3186         }
3187         if (features_cmd) {
3188                 rc = update_feature_set(fs, features_cmd);
3189                 if (rc)
3190                         goto closefs;
3191         }
3192         if (extended_cmd) {
3193                 rc = parse_extended_opts(fs, extended_cmd);
3194                 if (rc)
3195                         goto closefs;
3196                 if (clear_mmp && !f_flag) {
3197                         fputs(_("Error in using clear_mmp. "
3198                                 "It must be used with -f\n"),
3199                               stderr);
3200                         goto closefs;
3201                 }
3202         }
3203         if (clear_mmp) {
3204                 rc = ext2fs_mmp_clear(fs);
3205                 goto closefs;
3206         }
3207         if (journal_size || journal_device) {
3208                 rc = add_journal(fs);
3209                 if (rc)
3210                         goto closefs;
3211         }
3212
3213         if (Q_flag) {
3214                 if (mount_flags & EXT2_MF_MOUNTED) {
3215                         fputs(_("The quota feature may only be changed when "
3216                                 "the filesystem is unmounted.\n"), stderr);
3217                         rc = 1;
3218                         goto closefs;
3219                 }
3220                 handle_quota_options(fs);
3221         }
3222
3223         if (U_flag) {
3224                 int set_csum = 0;
3225                 dgrp_t i;
3226                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3227                 __u8 old_uuid[UUID_SIZE];
3228
3229                 if (ext2fs_has_group_desc_csum(fs)) {
3230                         /*
3231                          * Changing the UUID on a metadata_csum FS requires
3232                          * rewriting all metadata, which can race with a
3233                          * mounted fs.  Don't allow that unless we're saving
3234                          * the checksum seed.
3235                          */
3236                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3237                             !ext2fs_has_feature_csum_seed(fs->super) &&
3238                             ext2fs_has_feature_metadata_csum(fs->super)) {
3239                                 fputs(_("The UUID may only be "
3240                                         "changed when the filesystem is "
3241                                         "unmounted.\n"), stderr);
3242                                 fputs(_("If you only use kernels newer than "
3243                                         "v4.4, run 'tune2fs -O "
3244                                         "metadata_csum_seed' and re-run this "
3245                                         "command.\n"), stderr);
3246                                 try_confirm_csum_seed_support();
3247                                 exit(1);
3248                         }
3249                         if (!ext2fs_has_feature_csum_seed(fs->super))
3250                                 check_fsck_needed(fs,
3251                                         _("Setting UUID on a checksummed "
3252                                           "filesystem could take some time."));
3253
3254                         /*
3255                          * Determine if the block group checksums are
3256                          * correct so we know whether or not to set
3257                          * them later on.
3258                          */
3259                         for (i = 0; i < fs->group_desc_count; i++)
3260                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3261                                         break;
3262                         if (i >= fs->group_desc_count)
3263                                 set_csum = 1;
3264                 }
3265
3266                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3267                 if ((strcasecmp(new_UUID, "null") == 0) ||
3268                     (strcasecmp(new_UUID, "clear") == 0)) {
3269                         uuid_clear(sb->s_uuid);
3270                 } else if (strcasecmp(new_UUID, "time") == 0) {
3271                         uuid_generate_time(sb->s_uuid);
3272                 } else if (strcasecmp(new_UUID, "random") == 0) {
3273                         uuid_generate(sb->s_uuid);
3274                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3275                         com_err(program_name, 0, "%s",
3276                                 _("Invalid UUID format\n"));
3277                         rc = 1;
3278                         goto closefs;
3279                 }
3280                 ext2fs_init_csum_seed(fs);
3281                 if (set_csum) {
3282                         for (i = 0; i < fs->group_desc_count; i++)
3283                                 ext2fs_group_desc_csum_set(fs, i);
3284                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3285                 }
3286
3287                 /* If this is a journal dev, we need to copy UUID into jsb */
3288                 if (!(rc = get_journal_sb(fs, buf))) {
3289                         journal_superblock_t *jsb;
3290
3291                         jsb = (journal_superblock_t *) buf;
3292                         fputs(_("Need to update journal superblock.\n"), stdout);
3293                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3294
3295                         /* Writeback the journal superblock */
3296                         if ((rc = io_channel_write_blk64(fs->io,
3297                                 ext2fs_journal_sb_start(fs->blocksize),
3298                                         -SUPERBLOCK_SIZE, buf)))
3299                                 goto closefs;
3300                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3301                         goto closefs;
3302                 else {
3303                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3304
3305                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3306                                 goto closefs;
3307                 }
3308
3309                 ext2fs_mark_super_dirty(fs);
3310                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3311                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3312                      ext2fs_has_feature_ea_inode(fs->super)))
3313                         rewrite_checksums = 1;
3314         }
3315
3316         if (I_flag) {
3317                 if (mount_flags & EXT2_MF_MOUNTED) {
3318                         fputs(_("The inode size may only be "
3319                                 "changed when the filesystem is "
3320                                 "unmounted.\n"), stderr);
3321                         rc = 1;
3322                         goto closefs;
3323                 }
3324                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3325                         fputs(_("Changing the inode size not supported for "
3326                                 "filesystems with the flex_bg\n"
3327                                 "feature enabled.\n"),
3328                               stderr);
3329                         rc = 1;
3330                         goto closefs;
3331                 }
3332                 /*
3333                  * We want to update group descriptor also
3334                  * with the new free inode count
3335                  */
3336                 if (rewrite_checksums)
3337                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3338                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3339                 retval = resize_inode(fs, new_inode_size);
3340                 if (rewrite_checksums)
3341                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3342                 if (retval == 0) {
3343                         printf(_("Setting inode size %lu\n"),
3344                                                         new_inode_size);
3345                         rewrite_checksums = 1;
3346                 } else {
3347                         printf("%s", _("Failed to change inode size\n"));
3348                         rc = 1;
3349                         goto closefs;
3350                 }
3351         }
3352
3353         if (rewrite_checksums)
3354                 rewrite_metadata_checksums(fs);
3355
3356         if (l_flag)
3357                 list_super(sb);
3358         if (stride_set) {
3359                 sb->s_raid_stride = stride;
3360                 ext2fs_mark_super_dirty(fs);
3361                 printf(_("Setting stride size to %d\n"), stride);
3362         }
3363         if (stripe_width_set) {
3364                 sb->s_raid_stripe_width = stripe_width;
3365                 ext2fs_mark_super_dirty(fs);
3366                 printf(_("Setting stripe width to %d\n"), stripe_width);
3367         }
3368         if (ext_mount_opts) {
3369                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3370                         sizeof(fs->super->s_mount_opts));
3371                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3372                 ext2fs_mark_super_dirty(fs);
3373                 printf(_("Setting extended default mount options to '%s'\n"),
3374                        ext_mount_opts);
3375                 free(ext_mount_opts);
3376         }
3377
3378         free(device_name);
3379         remove_error_table(&et_ext2_error_table);
3380
3381 closefs:
3382         if (rc) {
3383                 ext2fs_mmp_stop(fs);
3384 #ifndef BUILD_AS_LIB
3385                 exit(1);
3386 #endif
3387         }
3388
3389         if (feature_64bit)
3390                 convert_64bit(fs, feature_64bit);
3391         return (ext2fs_close_free(&fs) ? 1 : 0);
3392 }