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                 EXT4_FEATURE_COMPAT_FAST_COMMIT,
 154         /* Incompat */
 155         EXT2_FEATURE_INCOMPAT_FILETYPE |
 156                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 157                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 158                 EXT4_FEATURE_INCOMPAT_EA_INODE|
 159                 EXT4_FEATURE_INCOMPAT_MMP |
 160                 EXT4_FEATURE_INCOMPAT_64BIT |
 161                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 162                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 163                 EXT4_FEATURE_INCOMPAT_LARGEDIR,
 164         /* R/O compat */
 165         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 166                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 167                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 168                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 169                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 170                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 171                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 172                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 173                 EXT4_FEATURE_RO_COMPAT_READONLY |
 174                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 175                 EXT4_FEATURE_RO_COMPAT_VERITY
 176 };
 177
 178 static __u32 clear_ok_features[3] = {
 179         /* Compat */
 180         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 181                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 182                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 183                 EXT4_FEATURE_COMPAT_FAST_COMMIT,
 184         /* Incompat */
 185         EXT2_FEATURE_INCOMPAT_FILETYPE |
 186                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 187                 EXT4_FEATURE_INCOMPAT_MMP |
 188                 EXT4_FEATURE_INCOMPAT_64BIT |
 189                 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
 190         /* R/O compat */
 191         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 192                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 193                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 194                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 195                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 196                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 197                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 198                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 199                 EXT4_FEATURE_RO_COMPAT_READONLY
 200 };
 201
 202 /**
 203  * Try to get journal super block if any
 204  */
 205 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 206 {
 207         int retval;
 208         journal_superblock_t *jsb;
 209
 210         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 211                 return EXT2_ET_UNSUPP_FEATURE;
 212         }
 213
 214         /* Get the journal superblock */
 215         if ((retval = io_channel_read_blk64(jfs->io,
 216             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 217                 com_err(program_name, retval, "%s",
 218                 _("while reading journal superblock"));
 219                 return retval;
 220         }
 221
 222         jsb = (journal_superblock_t *) buf;
 223         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 224             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 225                 fputs(_("Journal superblock not found!\n"), stderr);
 226                 return EXT2_ET_BAD_MAGIC;
 227         }
 228
 229         return 0;
 230 }
 231
 232 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
 233                           int nr_users)
 234 {
 235         int i;
 236         for (i = 0; i < nr_users; i++) {
 237                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 238                         return &s_users[i * UUID_SIZE];
 239         }
 240
 241         return NULL;
 242 }
 243
 244 /*
 245  * Remove an external journal from the filesystem
 246  */
 247 static int remove_journal_device(ext2_filsys fs)
 248 {
 249         char            *journal_path;
 250         ext2_filsys     jfs;
 251         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 252         journal_superblock_t    *jsb;
 253         int             i, nr_users;
 254         errcode_t       retval;
 255         int             commit_remove_journal = 0;
 256         io_manager      io_ptr;
 257
 258         if (f_flag)
 259                 commit_remove_journal = 1; /* force removal even if error */
 260
 261         uuid_unparse(fs->super->s_journal_uuid, buf);
 262         journal_path = blkid_get_devname(NULL, "UUID", buf);
 263
 264         if (!journal_path) {
 265                 journal_path =
 266                         ext2fs_find_block_device(fs->super->s_journal_dev);
 267                 if (!journal_path)
 268                         goto no_valid_journal;
 269         }
 270
 271 #ifdef CONFIG_TESTIO_DEBUG
 272         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 273                 io_ptr = test_io_manager;
 274                 test_io_backing_manager = unix_io_manager;
 275         } else
 276 #endif
 277                 io_ptr = unix_io_manager;
 278         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 279                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 280                              fs->blocksize, io_ptr, &jfs);
 281         if (retval) {
 282                 com_err(program_name, retval, "%s",
 283                         _("while trying to open external journal"));
 284                 goto no_valid_journal;
 285         }
 286
 287         if ((retval = get_journal_sb(jfs, buf))) {
 288                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 289                         fprintf(stderr, _("%s is not a journal device.\n"),
 290                                 journal_path);
 291                 goto no_valid_journal;
 292         }
 293
 294         jsb = (journal_superblock_t *) buf;
 295         /* Find the filesystem UUID */
 296         nr_users = ntohl(jsb->s_nr_users);
 297         if (nr_users > JFS_USERS_MAX) {
 298                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
 299                                  "is too high (%d).\n"), nr_users);
 300                 commit_remove_journal = 1;
 301                 goto no_valid_journal;
 302         }
 303
 304         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 305                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 306                       stderr);
 307                 commit_remove_journal = 1;
 308                 goto no_valid_journal;
 309         }
 310         nr_users--;
 311         for (i = 0; i < nr_users; i++)
 312                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 313         jsb->s_nr_users = htonl(nr_users);
 314
 315         /* Write back the journal superblock */
 316         retval = io_channel_write_blk64(jfs->io,
 317                                         ext2fs_journal_sb_start(fs->blocksize),
 318                                         -SUPERBLOCK_SIZE, buf);
 319         if (retval) {
 320                 com_err(program_name, retval,
 321                         "while writing journal superblock.");
 322                 goto no_valid_journal;
 323         }
 324
 325         commit_remove_journal = 1;
 326
 327 no_valid_journal:
 328         if (commit_remove_journal == 0) {
 329                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 330                         "Use -f option to remove missing journal device.\n"),
 331                       stderr);
 332                 return 1;
 333         }
 334         fs->super->s_journal_dev = 0;
 335         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 336         uuid_clear(fs->super->s_journal_uuid);
 337         ext2fs_mark_super_dirty(fs);
 338         fputs(_("Journal removed\n"), stdout);
 339         free(journal_path);
 340
 341         return 0;
 342 }
 343
 344 /* Helper function for remove_journal_inode */
 345 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 346                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 347                                blk64_t ref_block EXT2FS_ATTR((unused)),
 348                                int ref_offset EXT2FS_ATTR((unused)),
 349                                void *private EXT2FS_ATTR((unused)))
 350 {
 351         blk64_t block;
 352         int     group;
 353
 354         block = *blocknr;
 355         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 356         group = ext2fs_group_of_blk2(fs, block);
 357         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 358         ext2fs_group_desc_csum_set(fs, group);
 359         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 360         return 0;
 361 }
 362
 363 /*
 364  * Remove the journal inode from the filesystem
 365  */
 366 static errcode_t remove_journal_inode(ext2_filsys fs)
 367 {
 368         struct ext2_inode       inode;
 369         errcode_t               retval;
 370         ino_t                   ino = fs->super->s_journal_inum;
 371
 372         retval = ext2fs_read_inode(fs, ino,  &inode);
 373         if (retval) {
 374                 com_err(program_name, retval, "%s",
 375                         _("while reading journal inode"));
 376                 return retval;
 377         }
 378         if (ino == EXT2_JOURNAL_INO) {
 379                 retval = ext2fs_read_bitmaps(fs);
 380                 if (retval) {
 381                         com_err(program_name, retval, "%s",
 382                                 _("while reading bitmaps"));
 383                         return retval;
 384                 }
 385                 retval = ext2fs_block_iterate3(fs, ino,
 386                                                BLOCK_FLAG_READ_ONLY, NULL,
 387                                                release_blocks_proc, NULL);
 388                 if (retval) {
 389                         com_err(program_name, retval, "%s",
 390                                 _("while clearing journal inode"));
 391                         return retval;
 392                 }
 393                 memset(&inode, 0, sizeof(inode));
 394                 ext2fs_mark_bb_dirty(fs);
 395                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 396         } else
 397                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 398         retval = ext2fs_write_inode(fs, ino, &inode);
 399         if (retval) {
 400                 com_err(program_name, retval, "%s",
 401                         _("while writing journal inode"));
 402                 return retval;
 403         }
 404         fs->super->s_journal_inum = 0;
 405         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 406         ext2fs_mark_super_dirty(fs);
 407
 408         return 0;
 409 }
 410
 411 /*
 412  * Update the default mount options
 413  */
 414 static int update_mntopts(ext2_filsys fs, char *mntopts)
 415 {
 416         struct ext2_super_block *sb = fs->super;
 417
 418         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 419                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 420                         mntopts);
 421                 return 1;
 422         }
 423         ext2fs_mark_super_dirty(fs);
 424
 425         return 0;
 426 }
 427
 428 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
 429 {
 430         /* Refuse to modify anything but a freshly checked valid filesystem. */
 431         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 432             (fs->super->s_state & EXT2_ERROR_FS) ||
 433             (fs->super->s_lastcheck < fs->super->s_mtime)) {
 434                 puts(_(fsck_explain));
 435                 puts(_(please_fsck));
 436                 if (mount_flags & EXT2_MF_READONLY)
 437                         printf("%s", _("(and reboot afterwards!)\n"));
 438                 exit(1);
 439         }
 440
 441         /* Give the admin a few seconds to bail out of a dangerous op. */
 442         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 443                 return;
 444
 445         puts(prompt);
 446         proceed_question(5);
 447 }
 448
 449 static void request_dir_fsck_afterwards(ext2_filsys fs)
 450 {
 451         static int requested;
 452
 453         if (requested++)
 454                 return;
 455         fsck_requested++;
 456         fs->super->s_state &= ~EXT2_VALID_FS;
 457         puts(_(fsck_explain));
 458         puts(_(please_dir_fsck));
 459         if (mount_flags & EXT2_MF_READONLY)
 460                 printf("%s", _("(and reboot afterwards!)\n"));
 461 }
 462
 463 static void request_fsck_afterwards(ext2_filsys fs)
 464 {
 465         static int requested = 0;
 466
 467         if (requested++)
 468                 return;
 469         fsck_requested++;
 470         fs->super->s_state &= ~EXT2_VALID_FS;
 471         printf("\n%s\n", _(please_fsck));
 472         if (mount_flags & EXT2_MF_READONLY)
 473                 printf("%s", _("(and reboot afterwards!)\n"));
 474 }
 475
 476 static void convert_64bit(ext2_filsys fs, int direction)
 477 {
 478         /*
 479          * Is resize2fs going to demand a fsck run? Might as well tell the
 480          * user now.
 481          */
 482         if (!fsck_requested &&
 483             ((fs->super->s_state & EXT2_ERROR_FS) ||
 484              !(fs->super->s_state & EXT2_VALID_FS) ||
 485              fs->super->s_lastcheck < fs->super->s_mtime))
 486                 request_fsck_afterwards(fs);
 487         if (fsck_requested)
 488                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 489                         direction > 0 ? "-b" : "-s", fs->device_name);
 490         else
 491                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 492                         direction > 0 ? "-b" : "-s", fs->device_name);
 493
 494         if (undo_file)
 495                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 496         if (direction > 0)
 497                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 498         else
 499                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 500 }
 501
 502 /*
 503  * Rewrite directory blocks with checksums
 504  */
 505 struct rewrite_dir_context {
 506         char *buf;
 507         errcode_t errcode;
 508         ext2_ino_t dir;
 509         int is_htree;
 510 };
 511
 512 static int rewrite_dir_block(ext2_filsys fs,
 513                              blk64_t    *blocknr,
 514                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 515                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 516                              int        ref_offset EXT2FS_ATTR((unused)),
 517                              void       *priv_data)
 518 {
 519         struct ext2_dx_countlimit *dcl = NULL;
 520         struct rewrite_dir_context *ctx = priv_data;
 521         int dcl_offset, changed = 0;
 522
 523         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 524                                               ctx->dir);
 525         if (ctx->errcode)
 526                 return BLOCK_ABORT;
 527
 528         /* if htree node... */
 529         if (ctx->is_htree)
 530                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 531                                          &dcl, &dcl_offset);
 532         if (dcl) {
 533                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 534                         /* Ensure limit is the max size */
 535                         int max_entries = (fs->blocksize - dcl_offset) /
 536                                           sizeof(struct ext2_dx_entry);
 537                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 538                                 changed = 1;
 539                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 540                         }
 541                 } else {
 542                         /* If htree block is full then rebuild the dir */
 543                         if (ext2fs_le16_to_cpu(dcl->count) ==
 544                             ext2fs_le16_to_cpu(dcl->limit)) {
 545                                 request_dir_fsck_afterwards(fs);
 546                                 return 0;
 547                         }
 548                         /*
 549                          * Ensure dcl->limit is small enough to leave room for
 550                          * the checksum tail.
 551                          */
 552                         int max_entries = (fs->blocksize - (dcl_offset +
 553                                                 sizeof(struct ext2_dx_tail))) /
 554                                           sizeof(struct ext2_dx_entry);
 555                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 556                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 557                         /* Always rewrite checksum */
 558                         changed = 1;
 559                 }
 560         } else {
 561                 unsigned int rec_len, name_size;
 562                 char *top = ctx->buf + fs->blocksize;
 563                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 564                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 565
 566                 /* Find last and penultimate dirent */
 567                 while ((char *)de < top) {
 568                         penultimate_de = last_de;
 569                         last_de = de;
 570                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 571                         if (!ctx->errcode && !rec_len)
 572                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 573                         if (ctx->errcode)
 574                                 return BLOCK_ABORT;
 575                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 576                 }
 577                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 578                 if (ctx->errcode)
 579                         return BLOCK_ABORT;
 580                 name_size = ext2fs_dirent_name_len(last_de);
 581
 582                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 583                         if (!penultimate_de)
 584                                 return 0;
 585                         if (last_de->inode ||
 586                             name_size ||
 587                             rec_len != sizeof(struct ext2_dir_entry_tail))
 588                                 return 0;
 589                         /*
 590                          * The last dirent is unused and the right length to
 591                          * have stored a checksum.  Erase it.
 592                          */
 593                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 594                                                           &rec_len);
 595                         if (!rec_len)
 596                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 597                         if (ctx->errcode)
 598                                 return BLOCK_ABORT;
 599                         ext2fs_set_rec_len(fs, rec_len +
 600                                         sizeof(struct ext2_dir_entry_tail),
 601                                         penultimate_de);
 602                         changed = 1;
 603                 } else {
 604                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 605                         struct ext2_dir_entry_tail *t;
 606
 607                         /*
 608                          * If the last dirent looks like the tail, just update
 609                          * the checksum.
 610                          */
 611                         if (!last_de->inode &&
 612                             rec_len == csum_size) {
 613                                 t = (struct ext2_dir_entry_tail *)last_de;
 614                                 t->det_reserved_name_len =
 615                                                 EXT2_DIR_NAME_LEN_CSUM;
 616                                 changed = 1;
 617                                 goto out;
 618                         }
 619                         if (name_size & 3)
 620                                 name_size = (name_size & ~3) + 4;
 621                         /* If there's not enough space for the tail, e2fsck */
 622                         if (rec_len <= (8 + name_size + csum_size)) {
 623                                 request_dir_fsck_afterwards(fs);
 624                                 return 0;
 625                         }
 626                         /* Shorten that last de and insert the tail */
 627                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 628                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 629                         ext2fs_initialize_dirent_tail(fs, t);
 630
 631                         /* Always update checksum */
 632                         changed = 1;
 633                 }
 634         }
 635
 636 out:
 637         if (!changed)
 638                 return 0;
 639
 640         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 641                                                0, ctx->dir);
 642         if (ctx->errcode)
 643                 return BLOCK_ABORT;
 644
 645         return 0;
 646 }
 647
 648 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 649                                    struct ext2_inode *inode)
 650 {
 651         errcode_t       retval;
 652         struct rewrite_dir_context ctx;
 653
 654         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 655         if (retval)
 656                 return retval;
 657
 658         ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
 659         ctx.dir = dir;
 660         ctx.errcode = 0;
 661         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 662                                                 BLOCK_FLAG_DATA_ONLY,
 663                                        0, rewrite_dir_block, &ctx);
 664
 665         ext2fs_free_mem(&ctx.buf);
 666         if (retval)
 667                 return retval;
 668
 669         return ctx.errcode;
 670 }
 671
 672 /*
 673  * Context information that does not change across rewrite_one_inode()
 674  * invocations.
 675  */
 676 struct rewrite_context {
 677         ext2_filsys fs;
 678         struct ext2_inode *zero_inode;
 679         char *ea_buf;
 680         int inode_size;
 681 };
 682
 683 #define fatal_err(code, args...)                \
 684         do {                                    \
 685                 com_err(__func__, code, args);  \
 686                 exit(1);                        \
 687         } while (0);
 688
 689 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 690                                  struct ext2_inode *inode)
 691 {
 692         errcode_t retval;
 693         ext2_file_t file;
 694         __u32 hash;
 695
 696         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 697         if (retval)
 698                 fatal_err(retval, "open ea_inode");
 699         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 700                                   NULL);
 701         if (retval)
 702                 fatal_err(retval, "read ea_inode");
 703         retval = ext2fs_file_close(file);
 704         if (retval)
 705                 fatal_err(retval, "close ea_inode");
 706
 707         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 708                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 709         ext2fs_set_ea_inode_hash(inode, hash);
 710 }
 711
 712 static int update_xattr_entry_hashes(ext2_filsys fs,
 713                                      struct ext2_ext_attr_entry *entry,
 714                                      struct ext2_ext_attr_entry *end)
 715 {
 716         int modified = 0;
 717         errcode_t retval;
 718
 719         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 720                 if (entry->e_value_inum) {
 721                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 722                                                              &entry->e_hash);
 723                         if (retval)
 724                                 fatal_err(retval, "hash ea_inode entry");
 725                         modified = 1;
 726                 }
 727                 entry = EXT2_EXT_ATTR_NEXT(entry);
 728         }
 729         return modified;
 730 }
 731
 732 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 733                                        struct ext2_inode_large *inode)
 734 {
 735         struct ext2_ext_attr_entry *start, *end;
 736         __u32 *ea_magic;
 737
 738         if (inode->i_extra_isize == 0)
 739                 return;
 740
 741         if (inode->i_extra_isize & 3 ||
 742             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 743                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 744
 745         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 746                                 inode->i_extra_isize);
 747         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 748                 return;
 749
 750         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 751         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 752
 753         update_xattr_entry_hashes(ctx->fs, start, end);
 754 }
 755
 756 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 757                                       char *block_buf)
 758 {
 759         struct ext2_ext_attr_header *header;
 760         struct ext2_ext_attr_entry *start, *end;
 761
 762         header = (struct ext2_ext_attr_header *)block_buf;
 763         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 764                 return;
 765
 766         start = (struct ext2_ext_attr_entry *)(header+1);
 767         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 768
 769         if (update_xattr_entry_hashes(ctx->fs, start, end))
 770                 ext2fs_ext_attr_block_rehash(header, end);
 771 }
 772
 773 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 774                               struct ext2_inode *inode)
 775 {
 776         blk64_t file_acl_block;
 777         errcode_t retval;
 778
 779         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 780                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 781                         return;
 782                 memset(inode, 0, ctx->inode_size);
 783         }
 784
 785         if (inode->i_flags & EXT4_EA_INODE_FL)
 786                 update_ea_inode_hash(ctx, ino, inode);
 787
 788         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 789                 update_inline_xattr_hashes(ctx,
 790                                            (struct ext2_inode_large *)inode);
 791
 792         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 793         if (retval)
 794                 fatal_err(retval, "while writing inode");
 795
 796         retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
 797         if (retval)
 798                 fatal_err(retval, "while rewriting extents");
 799
 800         if (LINUX_S_ISDIR(inode->i_mode) &&
 801             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 802                 retval = rewrite_directory(ctx->fs, ino, inode);
 803                 if (retval)
 804                         fatal_err(retval, "while rewriting directories");
 805         }
 806
 807         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 808         if (!file_acl_block)
 809                 return;
 810
 811         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 812                                        ino);
 813         if (retval)
 814                 fatal_err(retval, "while rewriting extended attribute");
 815
 816         update_block_xattr_hashes(ctx, ctx->ea_buf);
 817         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 818                                         ino);
 819         if (retval)
 820                 fatal_err(retval, "while rewriting extended attribute");
 821 }
 822
 823 /*
 824  * Forcibly set checksums in all inodes.
 825  */
 826 static void rewrite_inodes(ext2_filsys fs)
 827 {
 828         ext2_inode_scan scan;
 829         errcode_t       retval;
 830         ext2_ino_t      ino;
 831         struct ext2_inode *inode;
 832         int pass;
 833         struct rewrite_context ctx = {
 834                 .fs = fs,
 835                 .inode_size = EXT2_INODE_SIZE(fs->super),
 836         };
 837
 838         if (fs->super->s_creator_os == EXT2_OS_HURD)
 839                 return;
 840
 841         retval = ext2fs_get_mem(ctx.inode_size, &inode);
 842         if (retval)
 843                 fatal_err(retval, "while allocating memory");
 844
 845         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 846         if (retval)
 847                 fatal_err(retval, "while allocating memory");
 848
 849         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 850         if (retval)
 851                 fatal_err(retval, "while allocating memory");
 852
 853         /*
 854          * Extended attribute inodes have a lookup hash that needs to be
 855          * recalculated with the new csum_seed. Other inodes referencing xattr
 856          * inodes need this value to be up to date. That's why we do two passes:
 857          *
 858          * pass 1: update xattr inodes to update their lookup hash as well as
 859          *         other checksums.
 860          *
 861          * pass 2: go over other inodes to update their checksums.
 862          */
 863         if (ext2fs_has_feature_ea_inode(fs->super))
 864                 pass = 1;
 865         else
 866                 pass = 2;
 867         for (;pass <= 2; pass++) {
 868                 retval = ext2fs_open_inode_scan(fs, 0, &scan);
 869                 if (retval)
 870                         fatal_err(retval, "while opening inode scan");
 871
 872                 do {
 873                         retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 874                                                             ctx.inode_size);
 875                         if (retval)
 876                                 fatal_err(retval, "while getting next inode");
 877                         if (!ino)
 878                                 break;
 879
 880                         if (((pass == 1) &&
 881                              (inode->i_flags & EXT4_EA_INODE_FL)) ||
 882                             ((pass == 2) &&
 883                              !(inode->i_flags & EXT4_EA_INODE_FL)))
 884                                 rewrite_one_inode(&ctx, ino, inode);
 885                 } while (ino);
 886
 887                 ext2fs_close_inode_scan(scan);
 888         }
 889
 890         ext2fs_free_mem(&ctx.zero_inode);
 891         ext2fs_free_mem(&ctx.ea_buf);
 892         ext2fs_free_mem(&inode);
 893 }
 894
 895 static void rewrite_metadata_checksums(ext2_filsys fs)
 896 {
 897         errcode_t retval;
 898         dgrp_t i;
 899
 900         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 901         ext2fs_init_csum_seed(fs);
 902         for (i = 0; i < fs->group_desc_count; i++)
 903                 ext2fs_group_desc_csum_set(fs, i);
 904         retval = ext2fs_read_bitmaps(fs);
 905         if (retval)
 906                 fatal_err(retval, "while reading bitmaps");
 907         rewrite_inodes(fs);
 908         ext2fs_mark_ib_dirty(fs);
 909         ext2fs_mark_bb_dirty(fs);
 910         ext2fs_mmp_update2(fs, 1);
 911         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 912         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 913         if (ext2fs_has_feature_metadata_csum(fs->super))
 914                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 915         else
 916                 fs->super->s_checksum_type = 0;
 917         ext2fs_mark_super_dirty(fs);
 918 }
 919
 920 static void enable_uninit_bg(ext2_filsys fs)
 921 {
 922         struct ext2_group_desc *gd;
 923         dgrp_t i;
 924
 925         for (i = 0; i < fs->group_desc_count; i++) {
 926                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 927                 gd->bg_itable_unused = 0;
 928                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 929                 ext2fs_group_desc_csum_set(fs, i);
 930         }
 931         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 932 }
 933
 934 static errcode_t zero_empty_inodes(ext2_filsys fs)
 935 {
 936         int length = EXT2_INODE_SIZE(fs->super);
 937         struct ext2_inode *inode = NULL;
 938         ext2_inode_scan scan;
 939         errcode_t       retval;
 940         ext2_ino_t      ino;
 941
 942         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 943         if (retval)
 944                 goto out;
 945
 946         retval = ext2fs_get_mem(length, &inode);
 947         if (retval)
 948                 goto out;
 949
 950         do {
 951                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 952                 if (retval)
 953                         goto out;
 954                 if (!ino)
 955                         break;
 956                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 957                         memset(inode, 0, length);
 958                         retval = ext2fs_write_inode_full(fs, ino, inode,
 959                                                          length);
 960                         if (retval)
 961                                 goto out;
 962                 }
 963         } while (1);
 964
 965 out:
 966         ext2fs_free_mem(&inode);
 967         ext2fs_close_inode_scan(scan);
 968         return retval;
 969 }
 970
 971 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
 972 {
 973         struct ext2_group_desc *gd;
 974         dgrp_t i;
 975         errcode_t retval;
 976         blk64_t b, c, d;
 977
 978         /* Load bitmaps to ensure that the uninit ones get written out */
 979         fs->super->s_feature_ro_compat |= csum_feature_flag;
 980         retval = ext2fs_read_bitmaps(fs);
 981         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
 982         if (retval) {
 983                 com_err("disable_uninit_bg", retval,
 984                         "while reading bitmaps");
 985                 request_fsck_afterwards(fs);
 986                 return retval;
 987         }
 988         ext2fs_mark_ib_dirty(fs);
 989         ext2fs_mark_bb_dirty(fs);
 990
 991         /* If we're only turning off uninit_bg, zero the inodes */
 992         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
 993                 retval = zero_empty_inodes(fs);
 994                 if (retval) {
 995                         com_err("disable_uninit_bg", retval,
 996                                 "while zeroing unused inodes");
 997                         request_fsck_afterwards(fs);
 998                         return retval;
 999                 }
1000         }
1001
1002         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1003         for (i = 0; i < fs->group_desc_count; i++) {
1004                 b = ext2fs_block_bitmap_loc(fs, i);
1005                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1006                 b = ext2fs_inode_bitmap_loc(fs, i);
1007                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1008
1009                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1010                 if (retval == 0 && b)
1011                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1012                 if (retval == 0 && c)
1013                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1014                 if (retval == 0 && d)
1015                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1016                 if (retval) {
1017                         com_err("disable_uninit_bg", retval,
1018                                 "while initializing block bitmaps");
1019                         request_fsck_afterwards(fs);
1020                 }
1021
1022                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1023                 gd->bg_itable_unused = 0;
1024                 gd->bg_flags = 0;
1025                 ext2fs_group_desc_csum_set(fs, i);
1026         }
1027         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1028         ext2fs_mark_super_dirty(fs);
1029
1030         return 0;
1031 }
1032
1033 static void
1034 try_confirm_csum_seed_support(void)
1035 {
1036         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1037                 fputs(_("WARNING: Could not confirm kernel support for "
1038                         "metadata_csum_seed.\n  This requires Linux >= "
1039                         "v4.4.\n"), stderr);
1040 }
1041
1042 /*
1043  * Update the feature set as provided by the user.
1044  */
1045 static int update_feature_set(ext2_filsys fs, char *features)
1046 {
1047         struct ext2_super_block *sb = fs->super;
1048         __u32           old_features[3];
1049         int             type_err;
1050         unsigned int    mask_err;
1051         errcode_t       err;
1052         enum quota_type qtype;
1053
1054 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1055                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1056 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1057                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1058 #define FEATURE_CHANGED(type, mask) ((mask) & \
1059                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1060
1061         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1062         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1063         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1064
1065         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1066                               ok_features, clear_ok_features,
1067                               &type_err, &mask_err)) {
1068                 if (!mask_err)
1069                         fprintf(stderr,
1070                                 _("Invalid filesystem option set: %s\n"),
1071                                 features);
1072                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1073                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1074                                           "not supported.\n"),
1075                                 e2p_feature2string(type_err &
1076                                                    E2P_FEATURE_TYPE_MASK,
1077                                                    mask_err));
1078                 else
1079                         fprintf(stderr, _("Setting filesystem feature '%s' "
1080                                           "not supported.\n"),
1081                                 e2p_feature2string(type_err, mask_err));
1082                 return 1;
1083         }
1084
1085         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1086                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1087                     !(mount_flags & EXT2_MF_READONLY)) {
1088                         fputs(_("The has_journal feature may only be "
1089                                 "cleared when the filesystem is\n"
1090                                 "unmounted or mounted "
1091                                 "read-only.\n"), stderr);
1092                         return 1;
1093                 }
1094                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1095                     f_flag < 2) {
1096                         fputs(_("The needs_recovery flag is set.  "
1097                                 "Please run e2fsck before clearing\n"
1098                                 "the has_journal flag.\n"), stderr);
1099                         return 1;
1100                 }
1101                 if (sb->s_journal_inum) {
1102                         if (remove_journal_inode(fs))
1103                                 return 1;
1104                 }
1105                 if (sb->s_journal_dev) {
1106                         if (remove_journal_device(fs))
1107                                 return 1;
1108                 }
1109         }
1110
1111         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1112                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1113                 if (ext2fs_has_feature_meta_bg(sb)) {
1114                         fputs(_("Setting filesystem feature 'sparse_super' "
1115                                 "not supported\nfor filesystems with "
1116                                 "the meta_bg feature enabled.\n"),
1117                                 stderr);
1118                         return 1;
1119                 }
1120         }
1121
1122         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1123                 int error;
1124
1125                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1126                     (mount_flags & EXT2_MF_READONLY)) {
1127                         fputs(_("The multiple mount protection feature can't\n"
1128                                 "be set if the filesystem is mounted or\n"
1129                                 "read-only.\n"), stderr);
1130                         return 1;
1131                 }
1132
1133                 error = ext2fs_mmp_init(fs);
1134                 if (error) {
1135                         fputs(_("\nError while enabling multiple mount "
1136                                 "protection feature."), stderr);
1137                         return 1;
1138                 }
1139
1140                 /*
1141                  * We want to update group desc with the new free blocks count
1142                  */
1143                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1144
1145                 printf(_("Multiple mount protection has been enabled "
1146                          "with update interval %ds.\n"),
1147                        sb->s_mmp_update_interval);
1148         }
1149
1150         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1151                 int error;
1152
1153                 if (mount_flags & EXT2_MF_READONLY) {
1154                         fputs(_("The multiple mount protection feature cannot\n"
1155                                 "be disabled if the filesystem is readonly.\n"),
1156                                 stderr);
1157                         return 1;
1158                 }
1159
1160                 error = ext2fs_read_bitmaps(fs);
1161                 if (error) {
1162                         fputs(_("Error while reading bitmaps\n"), stderr);
1163                         return 1;
1164                 }
1165
1166                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1167                 if (error) {
1168                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1169
1170                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1171                                 printf(_("Magic number in MMP block does not "
1172                                          "match. expected: %x, actual: %x\n"),
1173                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1174                         else
1175                                 com_err(program_name, error, "%s",
1176                                         _("while reading MMP block."));
1177                         goto mmp_error;
1178                 }
1179
1180                 /* We need to force out the group descriptors as well */
1181                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1182                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1183 mmp_error:
1184                 sb->s_mmp_block = 0;
1185                 sb->s_mmp_update_interval = 0;
1186         }
1187
1188         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1189                 /*
1190                  * If adding a journal flag, let the create journal
1191                  * code below handle setting the flag and creating the
1192                  * journal.  We supply a default size if necessary.
1193                  */
1194                 if (!journal_size)
1195                         journal_size = -1;
1196                 ext2fs_clear_feature_journal(sb);
1197         }
1198
1199         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1200                 if (!sb->s_def_hash_version)
1201                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1202                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1203                         uuid_generate((unsigned char *) sb->s_hash_seed);
1204         }
1205
1206         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1207                 if (ext2fs_check_desc(fs)) {
1208                         fputs(_("Clearing the flex_bg flag would "
1209                                 "cause the the filesystem to be\n"
1210                                 "inconsistent.\n"), stderr);
1211                         return 1;
1212                 }
1213         }
1214
1215         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1216                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1217                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1218                     !(mount_flags & EXT2_MF_READONLY)) {
1219                         fputs(_("The huge_file feature may only be "
1220                                 "cleared when the filesystem is\n"
1221                                 "unmounted or mounted "
1222                                 "read-only.\n"), stderr);
1223                         return 1;
1224                 }
1225         }
1226
1227         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1228                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1229                 check_fsck_needed(fs,
1230                         _("Enabling checksums could take some time."));
1231                 if (mount_flags & EXT2_MF_MOUNTED) {
1232                         fputs(_("Cannot enable metadata_csum on a mounted "
1233                                 "filesystem!\n"), stderr);
1234                         exit(1);
1235                 }
1236                 if (!ext2fs_has_feature_extents(fs->super))
1237                         printf("%s",
1238                                _("Extents are not enabled.  The file extent "
1239                                  "tree can be checksummed, whereas block maps "
1240                                  "cannot.  Not enabling extents reduces the "
1241                                  "coverage of metadata checksumming.  "
1242                                  "Re-run with -O extent to rectify.\n"));
1243                 if (!ext2fs_has_feature_64bit(fs->super))
1244                         printf("%s",
1245                                _("64-bit filesystem support is not enabled.  "
1246                                  "The larger fields afforded by this feature "
1247                                  "enable full-strength checksumming.  "
1248                                  "Run resize2fs -b to rectify.\n"));
1249                 rewrite_checksums = 1;
1250                 /* metadata_csum supersedes uninit_bg */
1251                 ext2fs_clear_feature_gdt_csum(fs->super);
1252
1253                 /* if uninit_bg was previously off, rewrite group desc */
1254                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1255                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1256                         enable_uninit_bg(fs);
1257
1258                 /*
1259                  * Since metadata_csum supersedes uninit_bg, pretend like
1260                  * uninit_bg has been off all along.
1261                  */
1262                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1263                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1264         }
1265
1266         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1267                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1268                 __u32   test_features[3];
1269
1270                 check_fsck_needed(fs,
1271                         _("Disabling checksums could take some time."));
1272                 if (mount_flags & EXT2_MF_MOUNTED) {
1273                         fputs(_("Cannot disable metadata_csum on a mounted "
1274                                 "filesystem!\n"), stderr);
1275                         exit(1);
1276                 }
1277                 rewrite_checksums = 1;
1278
1279                 /* Enable uninit_bg unless the user expressly turned it off */
1280                 memcpy(test_features, old_features, sizeof(test_features));
1281                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1282                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1283                 e2p_edit_feature2(features, test_features, ok_features,
1284                                   clear_ok_features, NULL, NULL);
1285                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1286                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1287                         ext2fs_set_feature_gdt_csum(fs->super);
1288
1289                 /*
1290                  * If we're turning off metadata_csum and not turning on
1291                  * uninit_bg, rewrite group desc.
1292                  */
1293                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1294                         err = disable_uninit_bg(fs,
1295                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1296                         if (err)
1297                                 return 1;
1298                 } else
1299                         /*
1300                          * metadata_csum previously provided uninit_bg, so if
1301                          * we're also setting the uninit_bg feature bit,
1302                          * pretend like it was previously enabled.  Checksums
1303                          * will be rewritten with crc16 later.
1304                          */
1305                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1306                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1307                 fs->super->s_checksum_seed = 0;
1308                 ext2fs_clear_feature_csum_seed(fs->super);
1309         }
1310
1311         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1312                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1313                 /* Do not enable uninit_bg when metadata_csum enabled */
1314                 if (ext2fs_has_feature_metadata_csum(fs->super))
1315                         ext2fs_clear_feature_gdt_csum(fs->super);
1316                 else
1317                         enable_uninit_bg(fs);
1318         }
1319
1320         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1321                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1322                 err = disable_uninit_bg(fs,
1323                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1324                 if (err)
1325                         return 1;
1326         }
1327
1328         /*
1329          * We don't actually toggle 64bit; resize2fs does that.  But this
1330          * must come after the metadata_csum feature_on so that it won't
1331          * complain about the lack of 64bit.
1332          */
1333         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1334                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1335                 if (mount_flags & EXT2_MF_MOUNTED) {
1336                         fprintf(stderr, _("Cannot enable 64-bit mode "
1337                                           "while mounted!\n"));
1338                         exit(1);
1339                 }
1340                 ext2fs_clear_feature_64bit(sb);
1341                 feature_64bit = 1;
1342         }
1343         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1344                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1345                 if (mount_flags & EXT2_MF_MOUNTED) {
1346                         fprintf(stderr, _("Cannot disable 64-bit mode "
1347                                           "while mounted!\n"));
1348                         exit(1);
1349                 }
1350                 ext2fs_set_feature_64bit(sb);
1351                 feature_64bit = -1;
1352         }
1353
1354         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1355                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1356                 /*
1357                  * Set the Q_flag here and handle the quota options in the code
1358                  * below.
1359                  */
1360                 if (!Q_flag) {
1361                         Q_flag = 1;
1362                         /* Enable usr/grp quota by default */
1363                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1364                                 if (qtype != PRJQUOTA)
1365                                         quota_enable[qtype] = QOPT_ENABLE;
1366                                 else
1367                                         quota_enable[qtype] = QOPT_DISABLE;
1368                         }
1369                 }
1370                 ext2fs_clear_feature_quota(sb);
1371         }
1372
1373         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1374                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1375                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1376                         fprintf(stderr, _("Cannot enable project feature; "
1377                                           "inode size too small.\n"));
1378                         exit(1);
1379                 }
1380                 Q_flag = 1;
1381                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1382         }
1383
1384         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1385                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1386                 Q_flag = 1;
1387                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1388         }
1389
1390         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1391                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1392                 /*
1393                  * Set the Q_flag here and handle the quota options in the code
1394                  * below.
1395                  */
1396                 if (Q_flag)
1397                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1398                                 "arguments.\n"), stderr);
1399                 Q_flag = 1;
1400                 /* Disable all quota by default */
1401                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1402                         quota_enable[qtype] = QOPT_DISABLE;
1403         }
1404
1405         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1406                 if (ext2fs_has_feature_casefold(sb)) {
1407                         fputs(_("Cannot enable encrypt feature on filesystems "
1408                                 "with the encoding feature enabled.\n"),
1409                               stderr);
1410                         return 1;
1411                 }
1412                 fs->super->s_encrypt_algos[0] =
1413                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1414                 fs->super->s_encrypt_algos[1] =
1415                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1416         }
1417
1418         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1419                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1420                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1421                         fputs(_("Setting feature 'metadata_csum_seed' "
1422                                 "is only supported\non filesystems with "
1423                                 "the metadata_csum feature enabled.\n"),
1424                                 stderr);
1425                         return 1;
1426                 }
1427                 try_confirm_csum_seed_support();
1428                 fs->super->s_checksum_seed = fs->csum_seed;
1429         }
1430
1431         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1432                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1433                 __le32 uuid_seed;
1434
1435                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1436                                         sizeof(fs->super->s_uuid));
1437                 if (fs->super->s_checksum_seed != uuid_seed) {
1438                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1439                                 fputs(_("UUID has changed since enabling "
1440                 "metadata_csum.  Filesystem must be unmounted "
1441                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1442                                       stderr);
1443                                 return 1;
1444                         }
1445                         check_fsck_needed(fs, _("Recalculating checksums "
1446                                                 "could take some time."));
1447                         rewrite_checksums = 1;
1448                 }
1449         }
1450
1451         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1452             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1453              sb->s_feature_incompat))
1454                 ext2fs_update_dynamic_rev(fs);
1455
1456         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1457                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1458             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1459                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1460             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1461                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1462             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1463                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1464             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1465                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1466                 request_fsck_afterwards(fs);
1467
1468         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1469             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1470             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1471                 ext2fs_mark_super_dirty(fs);
1472
1473         return 0;
1474 }
1475
1476 /*
1477  * Add a journal to the filesystem.
1478  */
1479 static int add_journal(ext2_filsys fs)
1480 {
1481         unsigned long journal_blocks;
1482         errcode_t       retval;
1483         ext2_filsys     jfs;
1484         io_manager      io_ptr;
1485
1486         if (ext2fs_has_feature_journal(fs->super)) {
1487                 fputs(_("The filesystem already has a journal.\n"), stderr);
1488                 goto err;
1489         }
1490         if (journal_device) {
1491                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1492                                         NULL))
1493                         proceed_question(-1);
1494                 check_mount(journal_device, 0, _("journal"));
1495 #ifdef CONFIG_TESTIO_DEBUG
1496                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1497                         io_ptr = test_io_manager;
1498                         test_io_backing_manager = unix_io_manager;
1499                 } else
1500 #endif
1501                         io_ptr = unix_io_manager;
1502                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1503                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1504                                      fs->blocksize, io_ptr, &jfs);
1505                 if (retval) {
1506                         com_err(program_name, retval,
1507                                 _("\n\twhile trying to open journal on %s\n"),
1508                                 journal_device);
1509                         goto err;
1510                 }
1511                 printf(_("Creating journal on device %s: "),
1512                        journal_device);
1513                 fflush(stdout);
1514
1515                 retval = ext2fs_add_journal_device(fs, jfs);
1516                 ext2fs_close_free(&jfs);
1517                 if (retval) {
1518                         com_err(program_name, retval,
1519                                 _("while adding filesystem to journal on %s"),
1520                                 journal_device);
1521                         goto err;
1522                 }
1523                 fputs(_("done\n"), stdout);
1524         } else if (journal_size) {
1525                 fputs(_("Creating journal inode: "), stdout);
1526                 fflush(stdout);
1527                 journal_blocks = figure_journal_size(journal_size, fs);
1528
1529                 if (journal_location_string)
1530                         journal_location =
1531                                 parse_num_blocks2(journal_location_string,
1532                                                   fs->super->s_log_block_size);
1533                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1534                                                    journal_location,
1535                                                    journal_flags);
1536                 if (retval) {
1537                         fprintf(stderr, "\n");
1538                         com_err(program_name, retval, "%s",
1539                                 _("\n\twhile trying to create journal file"));
1540                         return retval;
1541                 } else
1542                         fputs(_("done\n"), stdout);
1543                 /*
1544                  * If the filesystem wasn't mounted, we need to force
1545                  * the block group descriptors out.
1546                  */
1547                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1548                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1549         }
1550         print_check_message(fs->super->s_max_mnt_count,
1551                             fs->super->s_checkinterval);
1552         return 0;
1553
1554 err:
1555         free(journal_device);
1556         return 1;
1557 }
1558
1559 static void handle_quota_options(ext2_filsys fs)
1560 {
1561         errcode_t retval;
1562         quota_ctx_t qctx;
1563         ext2_ino_t qf_ino;
1564         enum quota_type qtype;
1565         unsigned int qtype_bits = 0;
1566         int need_dirty = 0;
1567
1568         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1569                 if (quota_enable[qtype] != 0)
1570                         break;
1571         if (qtype == MAXQUOTAS)
1572                 /* Nothing to do. */
1573                 return;
1574
1575         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1576             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1577                 fprintf(stderr, _("Cannot enable project quota; "
1578                                   "inode size too small.\n"));
1579                 exit(1);
1580         }
1581
1582         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1583                 if (quota_enable[qtype] == QOPT_ENABLE)
1584                         qtype_bits |= 1 << qtype;
1585         }
1586
1587         retval = quota_init_context(&qctx, fs, qtype_bits);
1588         if (retval) {
1589                 com_err(program_name, retval,
1590                         _("while initializing quota context in support library"));
1591                 exit(1);
1592         }
1593
1594         if (qtype_bits)
1595                 quota_compute_usage(qctx);
1596
1597         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1598                 if (quota_enable[qtype] == QOPT_ENABLE &&
1599                     *quota_sb_inump(fs->super, qtype) == 0) {
1600                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1601                                 retval = quota_update_limits(qctx, qf_ino,
1602                                                              qtype);
1603                                 if (retval) {
1604                                         com_err(program_name, retval,
1605                                                 _("while updating quota limits (%d)"),
1606                                                 qtype);
1607                                         exit(1);
1608                                 }
1609                         }
1610                         retval = quota_write_inode(qctx, 1 << qtype);
1611                         if (retval) {
1612                                 com_err(program_name, retval,
1613                                         _("while writing quota file (%d)"),
1614                                         qtype);
1615                                 exit(1);
1616                         }
1617                         /* Enable Quota feature if one of quota enabled */
1618                         if (!ext2fs_has_feature_quota(fs->super)) {
1619                                 ext2fs_set_feature_quota(fs->super);
1620                                 need_dirty = 1;
1621                         }
1622                         if (qtype == PRJQUOTA &&
1623                             !ext2fs_has_feature_project(fs->super)) {
1624                                 ext2fs_set_feature_project(fs->super);
1625                                 need_dirty = 1;
1626                         }
1627                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1628                         retval = quota_remove_inode(fs, qtype);
1629                         if (retval) {
1630                                 com_err(program_name, retval,
1631                                         _("while removing quota file (%d)"),
1632                                         qtype);
1633                                 exit(1);
1634                         }
1635                         if (qtype == PRJQUOTA) {
1636                                 ext2fs_clear_feature_project(fs->super);
1637                                 need_dirty = 1;
1638                         }
1639                 }
1640         }
1641
1642         quota_release_context(&qctx);
1643         /* Clear Quota feature if all quota types disabled. */
1644         if (!qtype_bits) {
1645                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1646                         if (*quota_sb_inump(fs->super, qtype))
1647                                 break;
1648                 if (qtype == MAXQUOTAS) {
1649                         ext2fs_clear_feature_quota(fs->super);
1650                         need_dirty = 1;
1651                 }
1652
1653         }
1654         if (need_dirty)
1655                 ext2fs_mark_super_dirty(fs);
1656         return;
1657 }
1658
1659 static int option_handle_function(char *token)
1660 {
1661         if (strncmp(token, "usr", 3) == 0) {
1662                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1663         } else if (strncmp(token, "^usr", 4) == 0) {
1664                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1665         } else if (strncmp(token, "grp", 3) == 0) {
1666                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1667         } else if (strncmp(token, "^grp", 4) == 0) {
1668                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1669         } else if (strncmp(token, "prj", 3) == 0) {
1670                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1671         } else if (strncmp(token, "^prj", 4) == 0) {
1672                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1673         } else {
1674                 fputs(_("\nBad quota options specified.\n\n"
1675                         "Following valid quota options are available "
1676                         "(pass by separating with comma):\n"
1677                         "\t[^]usr[quota]\n"
1678                         "\t[^]grp[quota]\n"
1679                         "\t[^]prj[quota]\n"
1680                         "\n\n"), stderr);
1681                 return 1;
1682         }
1683         return 0;
1684 }
1685
1686 static void parse_e2label_options(int argc, char ** argv)
1687 {
1688         if ((argc < 2) || (argc > 3)) {
1689                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1690                 exit(1);
1691         }
1692         io_options = strchr(argv[1], '?');
1693         if (io_options)
1694                 *io_options++ = 0;
1695         device_name = blkid_get_devname(NULL, argv[1], NULL);
1696         if (!device_name) {
1697                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1698                         argv[1]);
1699                 exit(1);
1700         }
1701         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1702         if (argc == 3) {
1703                 open_flag |= EXT2_FLAG_RW;
1704                 L_flag = 1;
1705                 new_label = argv[2];
1706         } else
1707                 print_label++;
1708 }
1709
1710 static time_t parse_time(char *str)
1711 {
1712         struct  tm      ts;
1713
1714         if (strcmp(str, "now") == 0) {
1715                 return (time(0));
1716         }
1717         memset(&ts, 0, sizeof(ts));
1718 #ifdef HAVE_STRPTIME
1719         strptime(str, "%Y%m%d%H%M%S", &ts);
1720 #else
1721         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1722                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1723         ts.tm_year -= 1900;
1724         ts.tm_mon -= 1;
1725         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1726             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1727             ts.tm_min > 59 || ts.tm_sec > 61)
1728                 ts.tm_mday = 0;
1729 #endif
1730         if (ts.tm_mday == 0) {
1731                 com_err(program_name, 0,
1732                         _("Couldn't parse date/time specifier: %s"),
1733                         str);
1734                 usage();
1735         }
1736         ts.tm_isdst = -1;
1737         return (mktime(&ts));
1738 }
1739
1740 static void parse_tune2fs_options(int argc, char **argv)
1741 {
1742         int c;
1743         char *tmp;
1744         struct group *gr;
1745         struct passwd *pw;
1746         int ret;
1747         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1748
1749         open_flag = 0;
1750         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1751         while ((c = getopt(argc, argv, optstring)) != EOF)
1752                 switch (c) {
1753                 case 'c':
1754                         max_mount_count = strtol(optarg, &tmp, 0);
1755                         if (*tmp || max_mount_count > 16000) {
1756                                 com_err(program_name, 0,
1757                                         _("bad mounts count - %s"),
1758                                         optarg);
1759                                 usage();
1760                         }
1761                         if (max_mount_count == 0)
1762                                 max_mount_count = -1;
1763                         c_flag = 1;
1764                         open_flag = EXT2_FLAG_RW;
1765                         break;
1766                 case 'C':
1767                         mount_count = strtoul(optarg, &tmp, 0);
1768                         if (*tmp || mount_count > 16000) {
1769                                 com_err(program_name, 0,
1770                                         _("bad mounts count - %s"),
1771                                         optarg);
1772                                 usage();
1773                         }
1774                         C_flag = 1;
1775                         open_flag = EXT2_FLAG_RW;
1776                         break;
1777                 case 'e':
1778                         if (strcmp(optarg, "continue") == 0)
1779                                 errors = EXT2_ERRORS_CONTINUE;
1780                         else if (strcmp(optarg, "remount-ro") == 0)
1781                                 errors = EXT2_ERRORS_RO;
1782                         else if (strcmp(optarg, "panic") == 0)
1783                                 errors = EXT2_ERRORS_PANIC;
1784                         else {
1785                                 com_err(program_name, 0,
1786                                         _("bad error behavior - %s"),
1787                                         optarg);
1788                                 usage();
1789                         }
1790                         e_flag = 1;
1791                         open_flag = EXT2_FLAG_RW;
1792                         break;
1793                 case 'E':
1794                         extended_cmd = optarg;
1795                         open_flag |= EXT2_FLAG_RW;
1796                         break;
1797                 case 'f': /* Force */
1798                         f_flag++;
1799                         break;
1800                 case 'g':
1801                         resgid = strtoul(optarg, &tmp, 0);
1802                         if (*tmp) {
1803                                 gr = getgrnam(optarg);
1804                                 if (gr == NULL)
1805                                         tmp = optarg;
1806                                 else {
1807                                         resgid = gr->gr_gid;
1808                                         *tmp = 0;
1809                                 }
1810                         }
1811                         if (*tmp) {
1812                                 com_err(program_name, 0,
1813                                         _("bad gid/group name - %s"),
1814                                         optarg);
1815                                 usage();
1816                         }
1817                         g_flag = 1;
1818                         open_flag = EXT2_FLAG_RW;
1819                         break;
1820                 case 'i':
1821                         interval = strtoul(optarg, &tmp, 0);
1822                         switch (*tmp) {
1823                         case 's':
1824                                 tmp++;
1825                                 break;
1826                         case '\0':
1827                         case 'd':
1828                         case 'D': /* days */
1829                                 interval *= 86400;
1830                                 if (*tmp != '\0')
1831                                         tmp++;
1832                                 break;
1833                         case 'm':
1834                         case 'M': /* months! */
1835                                 interval *= 86400 * 30;
1836                                 tmp++;
1837                                 break;
1838                         case 'w':
1839                         case 'W': /* weeks */
1840                                 interval *= 86400 * 7;
1841                                 tmp++;
1842                                 break;
1843                         }
1844                         if (*tmp) {
1845                                 com_err(program_name, 0,
1846                                         _("bad interval - %s"), optarg);
1847                                 usage();
1848                         }
1849                         i_flag = 1;
1850                         open_flag = EXT2_FLAG_RW;
1851                         break;
1852                 case 'j':
1853                         if (!journal_size)
1854                                 journal_size = -1;
1855                         open_flag = EXT2_FLAG_RW;
1856                         break;
1857                 case 'J':
1858                         parse_journal_opts(optarg);
1859                         open_flag = EXT2_FLAG_RW;
1860                         break;
1861                 case 'l':
1862                         l_flag = 1;
1863                         break;
1864                 case 'L':
1865                         new_label = optarg;
1866                         L_flag = 1;
1867                         open_flag |= EXT2_FLAG_RW |
1868                                 EXT2_FLAG_JOURNAL_DEV_OK;
1869                         break;
1870                 case 'm':
1871                         reserved_ratio = strtod(optarg, &tmp);
1872                         if (*tmp || reserved_ratio > 50 ||
1873                             reserved_ratio < 0) {
1874                                 com_err(program_name, 0,
1875                                         _("bad reserved block ratio - %s"),
1876                                         optarg);
1877                                 usage();
1878                         }
1879                         m_flag = 1;
1880                         open_flag = EXT2_FLAG_RW;
1881                         break;
1882                 case 'M':
1883                         new_last_mounted = optarg;
1884                         M_flag = 1;
1885                         open_flag = EXT2_FLAG_RW;
1886                         break;
1887                 case 'o':
1888                         if (mntopts_cmd) {
1889                                 com_err(program_name, 0, "%s",
1890                                         _("-o may only be specified once"));
1891                                 usage();
1892                         }
1893                         mntopts_cmd = optarg;
1894                         open_flag = EXT2_FLAG_RW;
1895                         break;
1896                 case 'O':
1897                         if (features_cmd) {
1898                                 com_err(program_name, 0, "%s",
1899                                         _("-O may only be specified once"));
1900                                 usage();
1901                         }
1902                         features_cmd = optarg;
1903                         open_flag = EXT2_FLAG_RW;
1904                         break;
1905                 case 'Q':
1906                         Q_flag = 1;
1907                         ret = parse_quota_opts(optarg, option_handle_function);
1908                         if (ret)
1909                                 exit(1);
1910                         open_flag = EXT2_FLAG_RW;
1911                         break;
1912                 case 'r':
1913                         reserved_blocks = strtoul(optarg, &tmp, 0);
1914                         if (*tmp) {
1915                                 com_err(program_name, 0,
1916                                         _("bad reserved blocks count - %s"),
1917                                         optarg);
1918                                 usage();
1919                         }
1920                         r_flag = 1;
1921                         open_flag = EXT2_FLAG_RW;
1922                         break;
1923                 case 's': /* Deprecated */
1924                         s_flag = atoi(optarg);
1925                         open_flag = EXT2_FLAG_RW;
1926                         break;
1927                 case 'T':
1928                         T_flag = 1;
1929                         last_check_time = parse_time(optarg);
1930                         open_flag = EXT2_FLAG_RW;
1931                         break;
1932                 case 'u':
1933                                 resuid = strtoul(optarg, &tmp, 0);
1934                                 if (*tmp) {
1935                                         pw = getpwnam(optarg);
1936                                         if (pw == NULL)
1937                                                 tmp = optarg;
1938                                         else {
1939                                                 resuid = pw->pw_uid;
1940                                                 *tmp = 0;
1941                                         }
1942                                 }
1943                                 if (*tmp) {
1944                                         com_err(program_name, 0,
1945                                                 _("bad uid/user name - %s"),
1946                                                 optarg);
1947                                         usage();
1948                                 }
1949                                 u_flag = 1;
1950                                 open_flag = EXT2_FLAG_RW;
1951                                 break;
1952                 case 'U':
1953                         new_UUID = optarg;
1954                         U_flag = 1;
1955                         open_flag = EXT2_FLAG_RW |
1956                                 EXT2_FLAG_JOURNAL_DEV_OK;
1957                         break;
1958                 case 'I':
1959                         new_inode_size = strtoul(optarg, &tmp, 0);
1960                         if (*tmp) {
1961                                 com_err(program_name, 0,
1962                                         _("bad inode size - %s"),
1963                                         optarg);
1964                                 usage();
1965                         }
1966                         if (!((new_inode_size &
1967                                (new_inode_size - 1)) == 0)) {
1968                                 com_err(program_name, 0,
1969                                         _("Inode size must be a "
1970                                           "power of two- %s"),
1971                                         optarg);
1972                                 usage();
1973                         }
1974                         open_flag = EXT2_FLAG_RW;
1975                         I_flag = 1;
1976                         break;
1977                 case 'z':
1978                         undo_file = optarg;
1979                         break;
1980                 default:
1981                         usage();
1982                 }
1983         if (optind < argc - 1 || optind == argc)
1984                 usage();
1985         if (!open_flag && !l_flag)
1986                 usage();
1987         io_options = strchr(argv[optind], '?');
1988         if (io_options)
1989                 *io_options++ = 0;
1990         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1991         if (!device_name) {
1992                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1993                         argv[optind]);
1994                 exit(1);
1995         }
1996 }
1997
1998 #ifdef CONFIG_BUILD_FINDFS
1999 void do_findfs(int argc, char **argv)
2000 {
2001         char    *dev;
2002
2003         if ((argc != 2) ||
2004             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2005                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2006                 exit(2);
2007         }
2008         dev = blkid_get_devname(NULL, argv[1], NULL);
2009         if (!dev) {
2010                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2011                         argv[1]);
2012                 exit(1);
2013         }
2014         puts(dev);
2015         exit(0);
2016 }
2017 #endif
2018
2019 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2020 {
2021         char    *buf, *token, *next, *p, *arg;
2022         int     len, hash_alg;
2023         int     r_usage = 0;
2024
2025         len = strlen(opts);
2026         buf = malloc(len+1);
2027         if (!buf) {
2028                 fprintf(stderr, "%s",
2029                         _("Couldn't allocate memory to parse options!\n"));
2030                 return 1;
2031         }
2032         strcpy(buf, opts);
2033         for (token = buf; token && *token; token = next) {
2034                 p = strchr(token, ',');
2035                 next = 0;
2036                 if (p) {
2037                         *p = 0;
2038                         next = p+1;
2039                 }
2040                 arg = strchr(token, '=');
2041                 if (arg) {
2042                         *arg = 0;
2043                         arg++;
2044                 }
2045                 if (strcmp(token, "clear-mmp") == 0 ||
2046                     strcmp(token, "clear_mmp") == 0) {
2047                         clear_mmp = 1;
2048                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2049                         unsigned long intv;
2050                         if (!arg) {
2051                                 r_usage++;
2052                                 continue;
2053                         }
2054                         intv = strtoul(arg, &p, 0);
2055                         if (*p) {
2056                                 fprintf(stderr,
2057                                         _("Invalid mmp_update_interval: %s\n"),
2058                                         arg);
2059                                 r_usage++;
2060                                 continue;
2061                         }
2062                         if (intv == 0) {
2063                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2064                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2065                                 fprintf(stderr,
2066                                         _("mmp_update_interval too big: %lu\n"),
2067                                         intv);
2068                                 r_usage++;
2069                                 continue;
2070                         }
2071                         printf(P_("Setting multiple mount protection update "
2072                                   "interval to %lu second\n",
2073                                   "Setting multiple mount protection update "
2074                                   "interval to %lu seconds\n", intv),
2075                                intv);
2076                         fs->super->s_mmp_update_interval = intv;
2077                         ext2fs_mark_super_dirty(fs);
2078                 } else if (!strcmp(token, "force_fsck")) {
2079                         fs->super->s_state |= EXT2_ERROR_FS;
2080                         printf(_("Setting filesystem error flag to force fsck.\n"));
2081                         ext2fs_mark_super_dirty(fs);
2082                 } else if (!strcmp(token, "test_fs")) {
2083                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2084                         printf("Setting test filesystem flag\n");
2085                         ext2fs_mark_super_dirty(fs);
2086                 } else if (!strcmp(token, "^test_fs")) {
2087                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2088                         printf("Clearing test filesystem flag\n");
2089                         ext2fs_mark_super_dirty(fs);
2090                 } else if (strcmp(token, "stride") == 0) {
2091                         if (!arg) {
2092                                 r_usage++;
2093                                 continue;
2094                         }
2095                         stride = strtoul(arg, &p, 0);
2096                         if (*p) {
2097                                 fprintf(stderr,
2098                                         _("Invalid RAID stride: %s\n"),
2099                                         arg);
2100                                 r_usage++;
2101                                 continue;
2102                         }
2103                         stride_set = 1;
2104                 } else if (strcmp(token, "stripe-width") == 0 ||
2105                            strcmp(token, "stripe_width") == 0) {
2106                         if (!arg) {
2107                                 r_usage++;
2108                                 continue;
2109                         }
2110                         stripe_width = strtoul(arg, &p, 0);
2111                         if (*p) {
2112                                 fprintf(stderr,
2113                                         _("Invalid RAID stripe-width: %s\n"),
2114                                         arg);
2115                                 r_usage++;
2116                                 continue;
2117                         }
2118                         stripe_width_set = 1;
2119                 } else if (strcmp(token, "hash_alg") == 0 ||
2120                            strcmp(token, "hash-alg") == 0) {
2121                         if (!arg) {
2122                                 r_usage++;
2123                                 continue;
2124                         }
2125                         hash_alg = e2p_string2hash(arg);
2126                         if (hash_alg < 0) {
2127                                 fprintf(stderr,
2128                                         _("Invalid hash algorithm: %s\n"),
2129                                         arg);
2130                                 r_usage++;
2131                                 continue;
2132                         }
2133                         fs->super->s_def_hash_version = hash_alg;
2134                         printf(_("Setting default hash algorithm "
2135                                  "to %s (%d)\n"),
2136                                arg, hash_alg);
2137                         ext2fs_mark_super_dirty(fs);
2138                 } else if (!strcmp(token, "mount_opts")) {
2139                         if (!arg) {
2140                                 r_usage++;
2141                                 continue;
2142                         }
2143                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2144                                 fprintf(stderr,
2145                                         "Extended mount options too long\n");
2146                                 continue;
2147                         }
2148                         ext_mount_opts = strdup(arg);
2149                 } else
2150                         r_usage++;
2151         }
2152         if (r_usage) {
2153                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2154                         "Extended options are separated by commas, "
2155                         "and may take an argument which\n"
2156                         "\tis set off by an equals ('=') sign.\n\n"
2157                         "Valid extended options are:\n"
2158                         "\tclear_mmp\n"
2159                         "\thash_alg=<hash algorithm>\n"
2160                         "\tmount_opts=<extended default mount options>\n"
2161                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2162                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2163                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2164                         "\tforce_fsck\n"
2165                         "\ttest_fs\n"
2166                         "\t^test_fs\n"));
2167                 free(buf);
2168                 return 1;
2169         }
2170         free(buf);
2171
2172         return 0;
2173 }
2174
2175 /*
2176  * Fill in the block bitmap bmap with the information regarding the
2177  * blocks to be moved
2178  */
2179 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2180                             ext2fs_block_bitmap bmap)
2181 {
2182         dgrp_t i;
2183         int retval;
2184         ext2_badblocks_list bb_list = 0;
2185         blk64_t j, needed_blocks = 0;
2186         blk64_t start_blk, end_blk;
2187
2188         retval = ext2fs_read_bb_inode(fs, &bb_list);
2189         if (retval)
2190                 return retval;
2191
2192         for (i = 0; i < fs->group_desc_count; i++) {
2193                 start_blk = ext2fs_inode_table_loc(fs, i) +
2194                                         fs->inode_blocks_per_group;
2195
2196                 end_blk = ext2fs_inode_table_loc(fs, i) +
2197                                         new_ino_blks_per_grp;
2198
2199                 for (j = start_blk; j < end_blk; j++) {
2200                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2201                                 /*
2202                                  * IF the block is a bad block we fail
2203                                  */
2204                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2205                                         ext2fs_badblocks_list_free(bb_list);
2206                                         return ENOSPC;
2207                                 }
2208
2209                                 ext2fs_mark_block_bitmap2(bmap, j);
2210                         } else {
2211                                 /*
2212                                  * We are going to use this block for
2213                                  * inode table. So mark them used.
2214                                  */
2215                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2216                         }
2217                 }
2218                 needed_blocks += end_blk - start_blk;
2219         }
2220
2221         ext2fs_badblocks_list_free(bb_list);
2222         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2223                 return ENOSPC;
2224
2225         return 0;
2226 }
2227
2228 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2229 {
2230         dgrp_t group;
2231         group = ext2fs_group_of_blk2(fs, blk);
2232         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2233                 return 1;
2234         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2235                 return 1;
2236         return 0;
2237 }
2238
2239 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2240 {
2241         blk64_t start_blk, end_blk;
2242         start_blk = fs->super->s_first_data_block +
2243                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2244         /*
2245          * We cannot get new block beyond end_blk for for the last block group
2246          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2247          */
2248         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2249         if (blk >= start_blk && blk <= end_blk)
2250                 return 1;
2251         return 0;
2252 }
2253
2254 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2255 {
2256
2257         char *buf;
2258         dgrp_t group = 0;
2259         errcode_t retval;
2260         int meta_data = 0;
2261         blk64_t blk, new_blk, goal;
2262         struct blk_move *bmv;
2263
2264         retval = ext2fs_get_mem(fs->blocksize, &buf);
2265         if (retval)
2266                 return retval;
2267
2268         for (new_blk = blk = fs->super->s_first_data_block;
2269              blk < ext2fs_blocks_count(fs->super); blk++) {
2270                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2271                         continue;
2272
2273                 if (ext2fs_is_meta_block(fs, blk)) {
2274                         /*
2275                          * If the block is mapping a fs meta data block
2276                          * like group desc/block bitmap/inode bitmap. We
2277                          * should find a block in the same group and fix
2278                          * the respective fs metadata pointers. Otherwise
2279                          * fail
2280                          */
2281                         group = ext2fs_group_of_blk2(fs, blk);
2282                         goal = ext2fs_group_first_block2(fs, group);
2283                         meta_data = 1;
2284
2285                 } else {
2286                         goal = new_blk;
2287                 }
2288                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2289                 if (retval)
2290                         goto err_out;
2291
2292                 /* new fs meta data block should be in the same group */
2293                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2294                         retval = ENOSPC;
2295                         goto err_out;
2296                 }
2297
2298                 /* Mark this block as allocated */
2299                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2300
2301                 /* Add it to block move list */
2302                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2303                 if (retval)
2304                         goto err_out;
2305
2306                 bmv->old_loc = blk;
2307                 bmv->new_loc = new_blk;
2308
2309                 list_add(&(bmv->list), &blk_move_list);
2310
2311                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2312                 if (retval)
2313                         goto err_out;
2314
2315                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2316                 if (retval)
2317                         goto err_out;
2318         }
2319
2320 err_out:
2321         ext2fs_free_mem(&buf);
2322         return retval;
2323 }
2324
2325 static blk64_t translate_block(blk64_t blk)
2326 {
2327         struct list_head *entry;
2328         struct blk_move *bmv;
2329
2330         list_for_each(entry, &blk_move_list) {
2331                 bmv = list_entry(entry, struct blk_move, list);
2332                 if (bmv->old_loc == blk)
2333                         return bmv->new_loc;
2334         }
2335
2336         return 0;
2337 }
2338
2339 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2340                          blk64_t *block_nr,
2341                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2342                          blk64_t ref_block EXT2FS_ATTR((unused)),
2343                          int ref_offset EXT2FS_ATTR((unused)),
2344                          void *priv_data)
2345 {
2346         int ret = 0;
2347         blk64_t new_blk;
2348         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2349
2350         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2351                 return 0;
2352         new_blk = translate_block(*block_nr);
2353         if (new_blk) {
2354                 *block_nr = new_blk;
2355                 /*
2356                  * This will force the ext2fs_write_inode in the iterator
2357                  */
2358                 ret |= BLOCK_CHANGED;
2359         }
2360
2361         return ret;
2362 }
2363
2364 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2365 {
2366         errcode_t retval = 0;
2367         ext2_ino_t ino;
2368         blk64_t blk;
2369         char *block_buf = 0;
2370         struct ext2_inode inode;
2371         ext2_inode_scan scan = NULL;
2372
2373         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2374         if (retval)
2375                 return retval;
2376
2377         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2378         if (retval)
2379                 goto err_out;
2380
2381         while (1) {
2382                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2383                 if (retval)
2384                         goto err_out;
2385
2386                 if (!ino)
2387                         break;
2388
2389                 if (inode.i_links_count == 0)
2390                         continue; /* inode not in use */
2391
2392                 /* FIXME!!
2393                  * If we end up modifying the journal inode
2394                  * the sb->s_jnl_blocks will differ. But a
2395                  * subsequent e2fsck fixes that.
2396                  * Do we need to fix this ??
2397                  */
2398
2399                 if (ext2fs_file_acl_block(fs, &inode) &&
2400                     ext2fs_test_block_bitmap2(bmap,
2401                                         ext2fs_file_acl_block(fs, &inode))) {
2402                         blk = translate_block(ext2fs_file_acl_block(fs,
2403                                                                     &inode));
2404                         if (!blk)
2405                                 continue;
2406
2407                         ext2fs_file_acl_block_set(fs, &inode, blk);
2408
2409                         /*
2410                          * Write the inode to disk so that inode table
2411                          * resizing can work
2412                          */
2413                         retval = ext2fs_write_inode(fs, ino, &inode);
2414                         if (retval)
2415                                 goto err_out;
2416                 }
2417
2418                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2419                         continue;
2420
2421                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2422                                                process_block, bmap);
2423                 if (retval)
2424                         goto err_out;
2425
2426         }
2427
2428 err_out:
2429         ext2fs_free_mem(&block_buf);
2430         ext2fs_close_inode_scan(scan);
2431
2432         return retval;
2433 }
2434
2435 /*
2436  * We need to scan for inode and block bitmaps that may need to be
2437  * moved.  This can take place if the filesystem was formatted for
2438  * RAID arrays using the mke2fs's extended option "stride".
2439  */
2440 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2441 {
2442         dgrp_t i;
2443         blk64_t blk, new_blk;
2444
2445         for (i = 0; i < fs->group_desc_count; i++) {
2446                 blk = ext2fs_block_bitmap_loc(fs, i);
2447                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2448                         new_blk = translate_block(blk);
2449                         if (!new_blk)
2450                                 continue;
2451                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2452                 }
2453
2454                 blk = ext2fs_inode_bitmap_loc(fs, i);
2455                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2456                         new_blk = translate_block(blk);
2457                         if (!new_blk)
2458                                 continue;
2459                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2460                 }
2461         }
2462         return 0;
2463 }
2464
2465 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2466 {
2467         dgrp_t i;
2468         blk64_t blk;
2469         errcode_t retval;
2470         int new_ino_blks_per_grp;
2471         unsigned int j;
2472         char *old_itable = NULL, *new_itable = NULL;
2473         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2474         unsigned long old_ino_size;
2475         int old_itable_size, new_itable_size;
2476
2477         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2478         old_ino_size = EXT2_INODE_SIZE(fs->super);
2479
2480         new_ino_blks_per_grp = ext2fs_div_ceil(
2481                                         EXT2_INODES_PER_GROUP(fs->super) *
2482                                         new_ino_size,
2483                                         fs->blocksize);
2484
2485         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2486
2487         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2488         if (retval)
2489                 return retval;
2490
2491         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2492         if (retval)
2493                 goto err_out;
2494
2495         tmp_old_itable = old_itable;
2496         tmp_new_itable = new_itable;
2497
2498         for (i = 0; i < fs->group_desc_count; i++) {
2499                 blk = ext2fs_inode_table_loc(fs, i);
2500                 retval = io_channel_read_blk64(fs->io, blk,
2501                                 fs->inode_blocks_per_group, old_itable);
2502                 if (retval)
2503                         goto err_out;
2504
2505                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2506                         memcpy(new_itable, old_itable, old_ino_size);
2507
2508                         memset(new_itable+old_ino_size, 0,
2509                                         new_ino_size - old_ino_size);
2510
2511                         new_itable += new_ino_size;
2512                         old_itable += old_ino_size;
2513                 }
2514
2515                 /* reset the pointer */
2516                 old_itable = tmp_old_itable;
2517                 new_itable = tmp_new_itable;
2518
2519                 retval = io_channel_write_blk64(fs->io, blk,
2520                                         new_ino_blks_per_grp, new_itable);
2521                 if (retval)
2522                         goto err_out;
2523         }
2524
2525         /* Update the meta data */
2526         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2527         ext2fs_free_inode_cache(fs->icache);
2528         fs->icache = 0;
2529         fs->super->s_inode_size = new_ino_size;
2530
2531 err_out:
2532         if (old_itable)
2533                 ext2fs_free_mem(&old_itable);
2534
2535         if (new_itable)
2536                 ext2fs_free_mem(&new_itable);
2537
2538         return retval;
2539 }
2540
2541 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2542 {
2543         blk64_t         blk;
2544         ext2_ino_t      ino;
2545         unsigned int    group = 0;
2546         unsigned int    count = 0;
2547         int             total_free = 0;
2548         int             group_free = 0;
2549
2550         /*
2551          * First calculate the block statistics
2552          */
2553         for (blk = fs->super->s_first_data_block;
2554              blk < ext2fs_blocks_count(fs->super); blk++) {
2555                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2556                         group_free++;
2557                         total_free++;
2558                 }
2559                 count++;
2560                 if ((count == fs->super->s_blocks_per_group) ||
2561                     (blk == ext2fs_blocks_count(fs->super)-1)) {
2562                         ext2fs_bg_free_blocks_count_set(fs, group++,
2563                                                         group_free);
2564                         count = 0;
2565                         group_free = 0;
2566                 }
2567         }
2568         total_free = EXT2FS_C2B(fs, total_free);
2569         ext2fs_free_blocks_count_set(fs->super, total_free);
2570
2571         /*
2572          * Next, calculate the inode statistics
2573          */
2574         group_free = 0;
2575         total_free = 0;
2576         count = 0;
2577         group = 0;
2578
2579         /* Protect loop from wrap-around if s_inodes_count maxed */
2580         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2581                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2582                         group_free++;
2583                         total_free++;
2584                 }
2585                 count++;
2586                 if ((count == fs->super->s_inodes_per_group) ||
2587                     (ino == fs->super->s_inodes_count)) {
2588                         ext2fs_bg_free_inodes_count_set(fs, group++,
2589                                                         group_free);
2590                         count = 0;
2591                         group_free = 0;
2592                 }
2593         }
2594         fs->super->s_free_inodes_count = total_free;
2595         ext2fs_mark_super_dirty(fs);
2596         return 0;
2597 }
2598
2599 #define list_for_each_safe(pos, pnext, head) \
2600         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2601              pos = pnext, pnext = pos->next)
2602
2603 static void free_blk_move_list(void)
2604 {
2605         struct list_head *entry, *tmp;
2606         struct blk_move *bmv;
2607
2608         list_for_each_safe(entry, tmp, &blk_move_list) {
2609                 bmv = list_entry(entry, struct blk_move, list);
2610                 list_del(entry);
2611                 ext2fs_free_mem(&bmv);
2612         }
2613         return;
2614 }
2615
2616 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2617 {
2618         errcode_t retval;
2619         int new_ino_blks_per_grp;
2620         ext2fs_block_bitmap bmap;
2621
2622         retval = ext2fs_read_inode_bitmap(fs);
2623         if (retval) {
2624                 fputs(_("Failed to read inode bitmap\n"), stderr);
2625                 return retval;
2626         }
2627         retval = ext2fs_read_block_bitmap(fs);
2628         if (retval) {
2629                 fputs(_("Failed to read block bitmap\n"), stderr);
2630                 return retval;
2631         }
2632         INIT_LIST_HEAD(&blk_move_list);
2633
2634
2635         new_ino_blks_per_grp = ext2fs_div_ceil(
2636                                         EXT2_INODES_PER_GROUP(fs->super)*
2637                                         new_size,
2638                                         fs->blocksize);
2639
2640         /* We may change the file system.
2641          * Mark the file system as invalid so that
2642          * the user is prompted to run fsck.
2643          */
2644         fs->super->s_state &= ~EXT2_VALID_FS;
2645
2646         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2647                                                 &bmap);
2648         if (retval) {
2649                 fputs(_("Failed to allocate block bitmap when "
2650                                 "increasing inode size\n"), stderr);
2651                 return retval;
2652         }
2653         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2654         if (retval) {
2655                 fputs(_("Not enough space to increase inode size \n"), stderr);
2656                 goto err_out;
2657         }
2658         retval = move_block(fs, bmap);
2659         if (retval) {
2660                 fputs(_("Failed to relocate blocks during inode resize \n"),
2661                       stderr);
2662                 goto err_out;
2663         }
2664         retval = inode_scan_and_fix(fs, bmap);
2665         if (retval)
2666                 goto err_out_undo;
2667
2668         retval = group_desc_scan_and_fix(fs, bmap);
2669         if (retval)
2670                 goto err_out_undo;
2671
2672         retval = expand_inode_table(fs, new_size);
2673         if (retval)
2674                 goto err_out_undo;
2675
2676         ext2fs_calculate_summary_stats(fs);
2677
2678         fs->super->s_state |= EXT2_VALID_FS;
2679         /* mark super block and block bitmap as dirty */
2680         ext2fs_mark_super_dirty(fs);
2681         ext2fs_mark_bb_dirty(fs);
2682
2683 err_out:
2684         free_blk_move_list();
2685         ext2fs_free_block_bitmap(bmap);
2686
2687         return retval;
2688
2689 err_out_undo:
2690         free_blk_move_list();
2691         ext2fs_free_block_bitmap(bmap);
2692         fputs(_("Error in resizing the inode size.\n"
2693                         "Run e2undo to undo the "
2694                         "file system changes. \n"), stderr);
2695
2696         return retval;
2697 }
2698
2699 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2700 {
2701         errcode_t retval = 0;
2702         const char *tdb_dir;
2703         char *tdb_file = NULL;
2704         char *dev_name, *tmp_name;
2705
2706         /* (re)open a specific undo file */
2707         if (undo_file && undo_file[0] != 0) {
2708                 retval = set_undo_io_backing_manager(*io_ptr);
2709                 if (retval)
2710                         goto err;
2711                 *io_ptr = undo_io_manager;
2712                 retval = set_undo_io_backup_file(undo_file);
2713                 if (retval)
2714                         goto err;
2715                 printf(_("Overwriting existing filesystem; this can be undone "
2716                          "using the command:\n"
2717                          "    e2undo %s %s\n\n"),
2718                          undo_file, name);
2719                 return retval;
2720         }
2721
2722         /*
2723          * Configuration via a conf file would be
2724          * nice
2725          */
2726         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2727         if (!tdb_dir)
2728                 tdb_dir = "/var/lib/e2fsprogs";
2729
2730         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2731             access(tdb_dir, W_OK))
2732                 return 0;
2733
2734         tmp_name = strdup(name);
2735         if (!tmp_name)
2736                 goto errout;
2737         dev_name = basename(tmp_name);
2738         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2739         if (!tdb_file) {
2740                 free(tmp_name);
2741                 goto errout;
2742         }
2743         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2744         free(tmp_name);
2745
2746         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2747                 retval = errno;
2748                 com_err(program_name, retval,
2749                         _("while trying to delete %s"), tdb_file);
2750                 goto errout;
2751         }
2752
2753         retval = set_undo_io_backing_manager(*io_ptr);
2754         if (retval)
2755                 goto errout;
2756         *io_ptr = undo_io_manager;
2757         retval = set_undo_io_backup_file(tdb_file);
2758         if (retval)
2759                 goto errout;
2760         printf(_("Overwriting existing filesystem; this can be undone "
2761                  "using the command:\n"
2762                  "    e2undo %s %s\n\n"),
2763                  tdb_file, name);
2764
2765         free(tdb_file);
2766         return 0;
2767 errout:
2768         free(tdb_file);
2769 err:
2770         com_err("tune2fs", retval, "while trying to setup undo file\n");
2771         return retval;
2772 }
2773
2774 static int
2775 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2776 {
2777         int retval, nr_users, start;
2778         journal_superblock_t *jsb;
2779         ext2_filsys jfs;
2780         __u8 *j_uuid;
2781         char *journal_path;
2782         char uuid[UUID_STR_SIZE];
2783         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2784
2785         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2786                 return 0;
2787
2788         uuid_unparse(sb->s_journal_uuid, uuid);
2789         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2790         if (!journal_path)
2791                 return 0;
2792
2793         retval = ext2fs_open2(journal_path, io_options,
2794                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2795                               0, 0, unix_io_manager, &jfs);
2796         if (retval) {
2797                 com_err(program_name, retval,
2798                         _("while trying to open %s"),
2799                         journal_path);
2800                 return retval;
2801         }
2802
2803         retval = get_journal_sb(jfs, buf);
2804         if (retval != 0) {
2805                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2806                         fprintf(stderr, _("%s is not a journal device.\n"),
2807                                 journal_path);
2808                 return retval;
2809         }
2810
2811         jsb = (journal_superblock_t *) buf;
2812         /* Find the filesystem UUID */
2813         nr_users = ntohl(jsb->s_nr_users);
2814         if (nr_users > JFS_USERS_MAX) {
2815                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2816                                  "is too high (%d).\n"), nr_users);
2817                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2818         }
2819
2820         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2821         if (j_uuid == NULL) {
2822                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2823                       stderr);
2824                 return EXT2_ET_LOAD_EXT_JOURNAL;
2825         }
2826
2827         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2828
2829         start = ext2fs_journal_sb_start(jfs->blocksize);
2830         /* Write back the journal superblock */
2831         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2832         if (retval != 0) {
2833                 com_err(program_name, retval,
2834                         "while writing journal superblock.");
2835                 return retval;
2836         }
2837
2838         ext2fs_close(jfs);
2839
2840         return 0;
2841 }
2842
2843 #ifndef BUILD_AS_LIB
2844 int main(int argc, char **argv)
2845 #else
2846 int tune2fs_main(int argc, char **argv)
2847 #endif  /* BUILD_AS_LIB */
2848 {
2849         errcode_t retval;
2850         ext2_filsys fs;
2851         struct ext2_super_block *sb;
2852         io_manager io_ptr, io_ptr_orig = NULL;
2853         int rc = 0;
2854         char default_undo_file[1] = { 0 };
2855
2856 #ifdef ENABLE_NLS
2857         setlocale(LC_MESSAGES, "");
2858         setlocale(LC_CTYPE, "");
2859         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2860         textdomain(NLS_CAT_NAME);
2861         set_com_err_gettext(gettext);
2862 #endif
2863         if (argc && *argv)
2864                 program_name = *argv;
2865         add_error_table(&et_ext2_error_table);
2866
2867 #ifdef CONFIG_BUILD_FINDFS
2868         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2869                 do_findfs(argc, argv);
2870 #endif
2871         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2872                 parse_e2label_options(argc, argv);
2873         else
2874                 parse_tune2fs_options(argc, argv);
2875
2876 #ifdef CONFIG_TESTIO_DEBUG
2877         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2878                 io_ptr = test_io_manager;
2879                 test_io_backing_manager = unix_io_manager;
2880         } else
2881 #endif
2882                 io_ptr = unix_io_manager;
2883
2884 retry_open:
2885         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2886                 open_flag |= EXT2_FLAG_SKIP_MMP;
2887
2888         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2889
2890         /* keep the filesystem struct around to dump MMP data */
2891         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2892
2893         retval = ext2fs_open2(device_name, io_options, open_flag,
2894                               0, 0, io_ptr, &fs);
2895         if (retval) {
2896                 com_err(program_name, retval,
2897                         _("while trying to open %s"),
2898                         device_name);
2899                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2900                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2901                         dump_mmp_msg(fs->mmp_buf,
2902                                      _("If you are sure the filesystem "
2903                                        "is not in use on any node, run:\n"
2904                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2905                 else if (retval == EXT2_ET_MMP_FAILED)
2906                         dump_mmp_msg(fs->mmp_buf, NULL);
2907                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2908                         fprintf(stderr,
2909                                 _("MMP block magic is bad. Try to fix it by "
2910                                   "running:\n'e2fsck -f %s'\n"), device_name);
2911                 else if (retval == EXT2_ET_BAD_MAGIC)
2912                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2913                 else if (retval != EXT2_ET_MMP_FAILED)
2914                         fprintf(stderr, "%s",
2915                              _("Couldn't find valid filesystem superblock.\n"));
2916
2917                 ext2fs_free(fs);
2918                 exit(1);
2919         }
2920         if (ext2fs_has_feature_journal_dev(fs->super)) {
2921                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2922                 ext2fs_free(fs);
2923                 exit(1);
2924         }
2925         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2926
2927         if (I_flag) {
2928                 /*
2929                  * Check the inode size is right so we can issue an
2930                  * error message and bail before setting up the tdb
2931                  * file.
2932                  */
2933                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2934                         fprintf(stderr, _("The inode size is already %lu\n"),
2935                                 new_inode_size);
2936                         rc = 1;
2937                         goto closefs;
2938                 }
2939                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2940                         fprintf(stderr, "%s",
2941                                 _("Shrinking inode size is not supported\n"));
2942                         rc = 1;
2943                         goto closefs;
2944                 }
2945                 if (new_inode_size > fs->blocksize) {
2946                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2947                                 new_inode_size, fs->blocksize);
2948                         rc = 1;
2949                         goto closefs;
2950                 }
2951                 check_fsck_needed(fs,
2952                         _("Resizing inodes could take some time."));
2953                 /*
2954                  * If inode resize is requested use the
2955                  * Undo I/O manager
2956                  */
2957                 undo_file = default_undo_file;
2958         }
2959
2960         /* Set up an undo file */
2961         if (undo_file && io_ptr_orig == NULL) {
2962                 io_ptr_orig = io_ptr;
2963                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2964                 if (retval) {
2965                         rc = 1;
2966                         goto closefs;
2967                 }
2968                 if (io_ptr != io_ptr_orig) {
2969                         ext2fs_close_free(&fs);
2970                         goto retry_open;
2971                 }
2972         }
2973
2974         sb = fs->super;
2975         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2976
2977         if (print_label) {
2978                 /* For e2label emulation */
2979                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2980                        sb->s_volume_name);
2981                 remove_error_table(&et_ext2_error_table);
2982                 goto closefs;
2983         }
2984
2985         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2986         if (retval) {
2987                 com_err("ext2fs_check_if_mount", retval,
2988                         _("while determining whether %s is mounted."),
2989                         device_name);
2990                 rc = 1;
2991                 goto closefs;
2992         }
2993
2994 #ifdef NO_RECOVERY
2995         /* Warn if file system needs recovery and it is opened for writing. */
2996         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
2997             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
2998             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
2999                 fprintf(stderr,
3000 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3001   "\te2fsck -E journal_only %s\n\n"
3002   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3003   "by journal recovery.\n"), device_name);
3004         }
3005 #else
3006         /* Recover the journal if possible. */
3007         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3008             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3009                 errcode_t err;
3010
3011                 printf(_("Recovering journal.\n"));
3012                 err = ext2fs_run_ext3_journal(&fs);
3013                 if (err) {
3014                         com_err("tune2fs", err, "while recovering journal.\n");
3015                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3016                         if (fs)
3017                                 ext2fs_close_free(&fs);
3018                         exit(1);
3019                 }
3020                 sb = fs->super;
3021         }
3022 #endif
3023
3024         /* Normally we only need to write out the superblock */
3025         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3026
3027         if (c_flag) {
3028                 sb->s_max_mnt_count = max_mount_count;
3029                 ext2fs_mark_super_dirty(fs);
3030                 printf(_("Setting maximal mount count to %d\n"),
3031                        max_mount_count);
3032         }
3033         if (C_flag) {
3034                 sb->s_mnt_count = mount_count;
3035                 ext2fs_mark_super_dirty(fs);
3036                 printf(_("Setting current mount count to %d\n"), mount_count);
3037         }
3038         if (e_flag) {
3039                 sb->s_errors = errors;
3040                 ext2fs_mark_super_dirty(fs);
3041                 printf(_("Setting error behavior to %d\n"), errors);
3042         }
3043         if (g_flag) {
3044                 sb->s_def_resgid = resgid;
3045                 ext2fs_mark_super_dirty(fs);
3046                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3047         }
3048         if (i_flag) {
3049                 if ((unsigned long long)interval >= (1ULL << 32)) {
3050                         com_err(program_name, 0,
3051                                 _("interval between checks is too big (%lu)"),
3052                                 interval);
3053                         rc = 1;
3054                         goto closefs;
3055                 }
3056                 sb->s_checkinterval = interval;
3057                 ext2fs_mark_super_dirty(fs);
3058                 printf(_("Setting interval between checks to %lu seconds\n"),
3059                        interval);
3060         }
3061         if (m_flag) {
3062                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3063                                           ext2fs_blocks_count(sb) / 100.0);
3064                 ext2fs_mark_super_dirty(fs);
3065                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3066                         reserved_ratio, ext2fs_r_blocks_count(sb));
3067         }
3068         if (r_flag) {
3069                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3070                         com_err(program_name, 0,
3071                                 _("reserved blocks count is too big (%llu)"),
3072                                 reserved_blocks);
3073                         rc = 1;
3074                         goto closefs;
3075                 }
3076                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3077                 ext2fs_mark_super_dirty(fs);
3078                 printf(_("Setting reserved blocks count to %llu\n"),
3079                        reserved_blocks);
3080         }
3081         if (s_flag == 1) {
3082                 if (ext2fs_has_feature_sparse_super(sb)) {
3083                         fputs(_("\nThe filesystem already has sparse "
3084                                 "superblocks.\n"), stderr);
3085                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3086                         fputs(_("\nSetting the sparse superblock flag not "
3087                                 "supported\nfor filesystems with "
3088                                 "the meta_bg feature enabled.\n"),
3089                                 stderr);
3090                         rc = 1;
3091                         goto closefs;
3092                 } else {
3093                         ext2fs_set_feature_sparse_super(sb);
3094                         sb->s_state &= ~EXT2_VALID_FS;
3095                         ext2fs_mark_super_dirty(fs);
3096                         printf(_("\nSparse superblock flag set.  %s"),
3097                                _(please_fsck));
3098                 }
3099         }
3100         if (s_flag == 0) {
3101                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3102                       stderr);
3103                 rc = 1;
3104                 goto closefs;
3105         }
3106         if (T_flag) {
3107                 sb->s_lastcheck = last_check_time;
3108                 ext2fs_mark_super_dirty(fs);
3109                 printf(_("Setting time filesystem last checked to %s\n"),
3110                        ctime(&last_check_time));
3111         }
3112         if (u_flag) {
3113                 sb->s_def_resuid = resuid;
3114                 ext2fs_mark_super_dirty(fs);
3115                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3116         }
3117         if (L_flag) {
3118                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3119                         fputs(_("Warning: label too long, truncating.\n"),
3120                               stderr);
3121                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3122                 strncpy(sb->s_volume_name, new_label,
3123                         sizeof(sb->s_volume_name));
3124                 ext2fs_mark_super_dirty(fs);
3125         }
3126         if (M_flag) {
3127                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3128                 strncpy(sb->s_last_mounted, new_last_mounted,
3129                         sizeof(sb->s_last_mounted));
3130                 ext2fs_mark_super_dirty(fs);
3131         }
3132         if (mntopts_cmd) {
3133                 rc = update_mntopts(fs, mntopts_cmd);
3134                 if (rc)
3135                         goto closefs;
3136         }
3137         if (features_cmd) {
3138                 rc = update_feature_set(fs, features_cmd);
3139                 if (rc)
3140                         goto closefs;
3141         }
3142         if (extended_cmd) {
3143                 rc = parse_extended_opts(fs, extended_cmd);
3144                 if (rc)
3145                         goto closefs;
3146                 if (clear_mmp && !f_flag) {
3147                         fputs(_("Error in using clear_mmp. "
3148                                 "It must be used with -f\n"),
3149                               stderr);
3150                         goto closefs;
3151                 }
3152         }
3153         if (clear_mmp) {
3154                 rc = ext2fs_mmp_clear(fs);
3155                 goto closefs;
3156         }
3157         if (journal_size || journal_device) {
3158                 rc = add_journal(fs);
3159                 if (rc)
3160                         goto closefs;
3161         }
3162
3163         if (Q_flag) {
3164                 if (mount_flags & EXT2_MF_MOUNTED) {
3165                         fputs(_("The quota feature may only be changed when "
3166                                 "the filesystem is unmounted.\n"), stderr);
3167                         rc = 1;
3168                         goto closefs;
3169                 }
3170                 handle_quota_options(fs);
3171         }
3172
3173         if (U_flag) {
3174                 int set_csum = 0;
3175                 dgrp_t i;
3176                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3177                 __u8 old_uuid[UUID_SIZE];
3178
3179                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3180                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3181                      ext2fs_has_feature_ea_inode(fs->super))) {
3182                         check_fsck_needed(fs,
3183                                 _("Setting the UUID on this "
3184                                   "filesystem could take some time."));
3185                         rewrite_checksums = 1;
3186                 }
3187
3188                 if (ext2fs_has_group_desc_csum(fs)) {
3189                         /*
3190                          * Changing the UUID on a metadata_csum FS requires
3191                          * rewriting all metadata, which can race with a
3192                          * mounted fs.  Don't allow that unless we're saving
3193                          * the checksum seed.
3194                          */
3195                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3196                             !ext2fs_has_feature_csum_seed(fs->super) &&
3197                             ext2fs_has_feature_metadata_csum(fs->super)) {
3198                                 fputs(_("The UUID may only be "
3199                                         "changed when the filesystem is "
3200                                         "unmounted.\n"), stderr);
3201                                 fputs(_("If you only use kernels newer than "
3202                                         "v4.4, run 'tune2fs -O "
3203                                         "metadata_csum_seed' and re-run this "
3204                                         "command.\n"), stderr);
3205                                 try_confirm_csum_seed_support();
3206                                 exit(1);
3207                         }
3208
3209                         /*
3210                          * Determine if the block group checksums are
3211                          * correct so we know whether or not to set
3212                          * them later on.
3213                          */
3214                         for (i = 0; i < fs->group_desc_count; i++)
3215                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3216                                         break;
3217                         if (i >= fs->group_desc_count)
3218                                 set_csum = 1;
3219                 }
3220
3221                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3222                 if ((strcasecmp(new_UUID, "null") == 0) ||
3223                     (strcasecmp(new_UUID, "clear") == 0)) {
3224                         uuid_clear(sb->s_uuid);
3225                 } else if (strcasecmp(new_UUID, "time") == 0) {
3226                         uuid_generate_time(sb->s_uuid);
3227                 } else if (strcasecmp(new_UUID, "random") == 0) {
3228                         uuid_generate(sb->s_uuid);
3229                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3230                         com_err(program_name, 0, "%s",
3231                                 _("Invalid UUID format\n"));
3232                         rc = 1;
3233                         goto closefs;
3234                 }
3235                 ext2fs_init_csum_seed(fs);
3236                 if (set_csum) {
3237                         for (i = 0; i < fs->group_desc_count; i++)
3238                                 ext2fs_group_desc_csum_set(fs, i);
3239                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3240                 }
3241
3242                 /* If this is a journal dev, we need to copy UUID into jsb */
3243                 if (!(rc = get_journal_sb(fs, buf))) {
3244                         journal_superblock_t *jsb;
3245
3246                         jsb = (journal_superblock_t *) buf;
3247                         fputs(_("Need to update journal superblock.\n"), stdout);
3248                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3249
3250                         /* Writeback the journal superblock */
3251                         if ((rc = io_channel_write_blk64(fs->io,
3252                                 ext2fs_journal_sb_start(fs->blocksize),
3253                                         -SUPERBLOCK_SIZE, buf)))
3254                                 goto closefs;
3255                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3256                         goto closefs;
3257                 else {
3258                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3259
3260                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3261                                 goto closefs;
3262                 }
3263
3264                 ext2fs_mark_super_dirty(fs);
3265         }
3266
3267         if (I_flag) {
3268                 if (mount_flags & EXT2_MF_MOUNTED) {
3269                         fputs(_("The inode size may only be "
3270                                 "changed when the filesystem is "
3271                                 "unmounted.\n"), stderr);
3272                         rc = 1;
3273                         goto closefs;
3274                 }
3275                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3276                         fputs(_("Changing the inode size not supported for "
3277                                 "filesystems with the flex_bg\n"
3278                                 "feature enabled.\n"),
3279                               stderr);
3280                         rc = 1;
3281                         goto closefs;
3282                 }
3283                 /*
3284                  * We want to update group descriptor also
3285                  * with the new free inode count
3286                  */
3287                 if (rewrite_checksums)
3288                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3289                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3290                 retval = resize_inode(fs, new_inode_size);
3291                 if (rewrite_checksums)
3292                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3293                 if (retval == 0) {
3294                         printf(_("Setting inode size %lu\n"),
3295                                                         new_inode_size);
3296                         rewrite_checksums = 1;
3297                 } else {
3298                         printf("%s", _("Failed to change inode size\n"));
3299                         rc = 1;
3300                         goto closefs;
3301                 }
3302         }
3303
3304         if (rewrite_checksums)
3305                 rewrite_metadata_checksums(fs);
3306
3307         if (l_flag)
3308                 list_super(sb);
3309         if (stride_set) {
3310                 sb->s_raid_stride = stride;
3311                 ext2fs_mark_super_dirty(fs);
3312                 printf(_("Setting stride size to %d\n"), stride);
3313         }
3314         if (stripe_width_set) {
3315                 sb->s_raid_stripe_width = stripe_width;
3316                 ext2fs_mark_super_dirty(fs);
3317                 printf(_("Setting stripe width to %d\n"), stripe_width);
3318         }
3319         if (ext_mount_opts) {
3320                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3321                         sizeof(fs->super->s_mount_opts));
3322                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3323                 ext2fs_mark_super_dirty(fs);
3324                 printf(_("Setting extended default mount options to '%s'\n"),
3325                        ext_mount_opts);
3326                 free(ext_mount_opts);
3327         }
3328
3329         free(device_name);
3330         remove_error_table(&et_ext2_error_table);
3331
3332 closefs:
3333         if (rc) {
3334                 ext2fs_mmp_stop(fs);
3335 #ifndef BUILD_AS_LIB
3336                 exit(1);
3337 #endif
3338         }
3339
3340         if (feature_64bit)
3341                 convert_64bit(fs, feature_64bit);
3342         return (ext2fs_close_free(&fs) ? 1 : 0);
3343 }