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 int enabling_casefold;
 105
 106 int journal_size, journal_fc_size, journal_flags;
 107 char *journal_device;
 108 static blk64_t journal_location = ~0LL;
 109
 110 static struct list_head blk_move_list;
 111
 112 struct blk_move {
 113         struct list_head list;
 114         blk64_t old_loc;
 115         blk64_t new_loc;
 116 };
 117
 118 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
 119
 120 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
 121
 122 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
 123 static const char *please_dir_fsck =
 124                 N_("Please run e2fsck -fD on the filesystem.\n");
 125
 126 #ifdef CONFIG_BUILD_FINDFS
 127 void do_findfs(int argc, char **argv);
 128 #endif
 129
 130 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
 131 int journal_enable_debug = -1;
 132 #endif
 133
 134 static void usage(void)
 135 {
 136         fprintf(stderr,
 137                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
 138                   "[-g group]\n"
 139                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 140                   "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
 141                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
 142                   "\t[-L volume_label] [-M last_mounted_dir]\n"
 143                   "\t[-O [^]feature[,...]] [-Q quota_options]\n"
 144                   "\t[-E extended-option[,...]] [-T last_check_time] "
 145                   "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
 146                 program_name);
 147         exit(1);
 148 }
 149
 150 static __u32 ok_features[3] = {
 151         /* Compat */
 152         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 153                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 154                 EXT4_FEATURE_COMPAT_FAST_COMMIT |
 155                 EXT4_FEATURE_COMPAT_STABLE_INODES,
 156         /* Incompat */
 157         EXT2_FEATURE_INCOMPAT_FILETYPE |
 158                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 159                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 160                 EXT4_FEATURE_INCOMPAT_EA_INODE|
 161                 EXT4_FEATURE_INCOMPAT_MMP |
 162                 EXT4_FEATURE_INCOMPAT_64BIT |
 163                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 164                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 165                 EXT4_FEATURE_INCOMPAT_LARGEDIR |
 166                 EXT4_FEATURE_INCOMPAT_CASEFOLD,
 167         /* R/O compat */
 168         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 169                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 170                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 171                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 172                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 173                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 174                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 175                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 176                 EXT4_FEATURE_RO_COMPAT_READONLY |
 177                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 178                 EXT4_FEATURE_RO_COMPAT_VERITY
 179 };
 180
 181 static __u32 clear_ok_features[3] = {
 182         /* Compat */
 183         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 184                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 185                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 186                 EXT4_FEATURE_COMPAT_FAST_COMMIT,
 187         /* Incompat */
 188         EXT2_FEATURE_INCOMPAT_FILETYPE |
 189                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 190                 EXT4_FEATURE_INCOMPAT_MMP |
 191                 EXT4_FEATURE_INCOMPAT_64BIT |
 192                 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
 193         /* R/O compat */
 194         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 195                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 196                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 197                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 198                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 199                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 200                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 201                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 202                 EXT4_FEATURE_RO_COMPAT_READONLY
 203 };
 204
 205 /**
 206  * Try to get journal super block if any
 207  */
 208 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 209 {
 210         int retval;
 211         journal_superblock_t *jsb;
 212
 213         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 214                 return EXT2_ET_UNSUPP_FEATURE;
 215         }
 216
 217         /* Get the journal superblock */
 218         if ((retval = io_channel_read_blk64(jfs->io,
 219             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 220                 com_err(program_name, retval, "%s",
 221                 _("while reading journal superblock"));
 222                 return retval;
 223         }
 224
 225         jsb = (journal_superblock_t *) buf;
 226         if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
 227             (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
 228                 fputs(_("Journal superblock not found!\n"), stderr);
 229                 return EXT2_ET_BAD_MAGIC;
 230         }
 231
 232         return 0;
 233 }
 234
 235 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
 236                           int nr_users)
 237 {
 238         int i;
 239         for (i = 0; i < nr_users; i++) {
 240                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 241                         return &s_users[i * UUID_SIZE];
 242         }
 243
 244         return NULL;
 245 }
 246
 247 /*
 248  * Remove an external journal from the filesystem
 249  */
 250 static int remove_journal_device(ext2_filsys fs)
 251 {
 252         char            *journal_path;
 253         ext2_filsys     jfs;
 254         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 255         journal_superblock_t    *jsb;
 256         int             i, nr_users;
 257         errcode_t       retval;
 258         int             commit_remove_journal = 0;
 259         io_manager      io_ptr;
 260
 261         if (f_flag)
 262                 commit_remove_journal = 1; /* force removal even if error */
 263
 264         uuid_unparse(fs->super->s_journal_uuid, buf);
 265         journal_path = blkid_get_devname(NULL, "UUID", buf);
 266
 267         if (!journal_path) {
 268                 journal_path =
 269                         ext2fs_find_block_device(fs->super->s_journal_dev);
 270                 if (!journal_path)
 271                         goto no_valid_journal;
 272         }
 273
 274 #ifdef CONFIG_TESTIO_DEBUG
 275         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 276                 io_ptr = test_io_manager;
 277                 test_io_backing_manager = unix_io_manager;
 278         } else
 279 #endif
 280                 io_ptr = unix_io_manager;
 281         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 282                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 283                              fs->blocksize, io_ptr, &jfs);
 284         if (retval) {
 285                 com_err(program_name, retval, "%s",
 286                         _("while trying to open external journal"));
 287                 goto no_valid_journal;
 288         }
 289
 290         if ((retval = get_journal_sb(jfs, buf))) {
 291                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 292                         fprintf(stderr, _("%s is not a journal device.\n"),
 293                                 journal_path);
 294                 goto no_valid_journal;
 295         }
 296
 297         jsb = (journal_superblock_t *) buf;
 298         /* Find the filesystem UUID */
 299         nr_users = ntohl(jsb->s_nr_users);
 300         if (nr_users > JBD2_USERS_MAX) {
 301                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
 302                                  "is too high (%d).\n"), nr_users);
 303                 commit_remove_journal = 1;
 304                 goto no_valid_journal;
 305         }
 306
 307         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 308                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 309                       stderr);
 310                 commit_remove_journal = 1;
 311                 goto no_valid_journal;
 312         }
 313         nr_users--;
 314         for (i = 0; i < nr_users; i++)
 315                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 316         jsb->s_nr_users = htonl(nr_users);
 317
 318         /* Write back the journal superblock */
 319         retval = io_channel_write_blk64(jfs->io,
 320                                         ext2fs_journal_sb_start(fs->blocksize),
 321                                         -SUPERBLOCK_SIZE, buf);
 322         if (retval) {
 323                 com_err(program_name, retval,
 324                         "while writing journal superblock.");
 325                 goto no_valid_journal;
 326         }
 327
 328         commit_remove_journal = 1;
 329
 330 no_valid_journal:
 331         if (commit_remove_journal == 0) {
 332                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 333                         "Use -f option to remove missing journal device.\n"),
 334                       stderr);
 335                 return 1;
 336         }
 337         fs->super->s_journal_dev = 0;
 338         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 339         uuid_clear(fs->super->s_journal_uuid);
 340         ext2fs_mark_super_dirty(fs);
 341         fputs(_("Journal removed\n"), stdout);
 342         free(journal_path);
 343
 344         return 0;
 345 }
 346
 347 /* Helper function for remove_journal_inode */
 348 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 349                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 350                                blk64_t ref_block EXT2FS_ATTR((unused)),
 351                                int ref_offset EXT2FS_ATTR((unused)),
 352                                void *private EXT2FS_ATTR((unused)))
 353 {
 354         blk64_t block;
 355         int     group;
 356
 357         block = *blocknr;
 358         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 359         group = ext2fs_group_of_blk2(fs, block);
 360         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 361         ext2fs_group_desc_csum_set(fs, group);
 362         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 363         return 0;
 364 }
 365
 366 /*
 367  * Remove the journal inode from the filesystem
 368  */
 369 static errcode_t remove_journal_inode(ext2_filsys fs)
 370 {
 371         struct ext2_inode       inode;
 372         errcode_t               retval;
 373         ext2_ino_t              ino = fs->super->s_journal_inum;
 374
 375         retval = ext2fs_read_inode(fs, ino,  &inode);
 376         if (retval) {
 377                 com_err(program_name, retval, "%s",
 378                         _("while reading journal inode"));
 379                 return retval;
 380         }
 381         if (ino == EXT2_JOURNAL_INO) {
 382                 retval = ext2fs_read_bitmaps(fs);
 383                 if (retval) {
 384                         com_err(program_name, retval, "%s",
 385                                 _("while reading bitmaps"));
 386                         return retval;
 387                 }
 388                 retval = ext2fs_block_iterate3(fs, ino,
 389                                                BLOCK_FLAG_READ_ONLY, NULL,
 390                                                release_blocks_proc, NULL);
 391                 if (retval) {
 392                         com_err(program_name, retval, "%s",
 393                                 _("while clearing journal inode"));
 394                         return retval;
 395                 }
 396                 memset(&inode, 0, sizeof(inode));
 397                 ext2fs_mark_bb_dirty(fs);
 398                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 399         } else
 400                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 401         retval = ext2fs_write_inode(fs, ino, &inode);
 402         if (retval) {
 403                 com_err(program_name, retval, "%s",
 404                         _("while writing journal inode"));
 405                 return retval;
 406         }
 407         fs->super->s_journal_inum = 0;
 408         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 409         ext2fs_mark_super_dirty(fs);
 410
 411         return 0;
 412 }
 413
 414 /*
 415  * Update the default mount options
 416  */
 417 static int update_mntopts(ext2_filsys fs, char *mntopts)
 418 {
 419         struct ext2_super_block *sb = fs->super;
 420
 421         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 422                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 423                         mntopts);
 424                 return 1;
 425         }
 426         ext2fs_mark_super_dirty(fs);
 427
 428         return 0;
 429 }
 430
 431 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
 432 {
 433         /* Refuse to modify anything but a freshly checked valid filesystem. */
 434         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 435             (fs->super->s_state & EXT2_ERROR_FS) ||
 436             (fs->super->s_lastcheck < fs->super->s_mtime)) {
 437                 puts(_(fsck_explain));
 438                 puts(_(please_fsck));
 439                 if (mount_flags & EXT2_MF_READONLY)
 440                         printf("%s", _("(and reboot afterwards!)\n"));
 441                 return 1;
 442         }
 443
 444         /* Give the admin a few seconds to bail out of a dangerous op. */
 445         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 446                 return 0;
 447
 448         puts(prompt);
 449         proceed_question(5);
 450
 451         return 0;
 452 }
 453
 454 static void request_dir_fsck_afterwards(ext2_filsys fs)
 455 {
 456         static int requested;
 457
 458         if (requested++)
 459                 return;
 460         fsck_requested++;
 461         fs->super->s_state &= ~EXT2_VALID_FS;
 462         puts(_(fsck_explain));
 463         puts(_(please_dir_fsck));
 464         if (mount_flags & EXT2_MF_READONLY)
 465                 printf("%s", _("(and reboot afterwards!)\n"));
 466 }
 467
 468 static void request_fsck_afterwards(ext2_filsys fs)
 469 {
 470         static int requested = 0;
 471
 472         if (requested++)
 473                 return;
 474         fsck_requested++;
 475         fs->super->s_state &= ~EXT2_VALID_FS;
 476         printf("\n%s\n", _(please_fsck));
 477         if (mount_flags & EXT2_MF_READONLY)
 478                 printf("%s", _("(and reboot afterwards!)\n"));
 479 }
 480
 481 static void convert_64bit(ext2_filsys fs, int direction)
 482 {
 483         /*
 484          * Is resize2fs going to demand a fsck run? Might as well tell the
 485          * user now.
 486          */
 487         if (!fsck_requested &&
 488             ((fs->super->s_state & EXT2_ERROR_FS) ||
 489              !(fs->super->s_state & EXT2_VALID_FS) ||
 490              fs->super->s_lastcheck < fs->super->s_mtime))
 491                 request_fsck_afterwards(fs);
 492         if (fsck_requested)
 493                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 494                         direction > 0 ? "-b" : "-s", fs->device_name);
 495         else
 496                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 497                         direction > 0 ? "-b" : "-s", fs->device_name);
 498
 499         if (undo_file)
 500                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 501         if (direction > 0)
 502                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 503         else
 504                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 505 }
 506
 507 /*
 508  * Rewrite directory blocks with checksums
 509  */
 510 struct rewrite_dir_context {
 511         char *buf;
 512         errcode_t errcode;
 513         ext2_ino_t dir;
 514         int is_htree:1;
 515         int clear_htree:1;
 516 };
 517
 518 static int rewrite_dir_block(ext2_filsys fs,
 519                              blk64_t    *blocknr,
 520                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 521                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 522                              int        ref_offset EXT2FS_ATTR((unused)),
 523                              void       *priv_data)
 524 {
 525         struct ext2_dx_countlimit *dcl = NULL;
 526         struct rewrite_dir_context *ctx = priv_data;
 527         int dcl_offset, changed = 0;
 528
 529         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 530                                               ctx->dir);
 531         if (ctx->errcode)
 532                 return BLOCK_ABORT;
 533
 534         /*
 535          * if htree node... Note that if we are clearing htree structures from
 536          * the directory, we treat the htree internal block as an ordinary leaf.
 537          * The code below will do the right thing and make space for checksum
 538          * there.
 539          */
 540         if (ctx->is_htree && !ctx->clear_htree)
 541                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 542                                          &dcl, &dcl_offset);
 543         if (dcl) {
 544                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 545                         /* Ensure limit is the max size */
 546                         int max_entries = (fs->blocksize - dcl_offset) /
 547                                           sizeof(struct ext2_dx_entry);
 548                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 549                                 changed = 1;
 550                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 551                         }
 552                 } else {
 553                         /* If htree block is full then rebuild the dir */
 554                         if (ext2fs_le16_to_cpu(dcl->count) ==
 555                             ext2fs_le16_to_cpu(dcl->limit)) {
 556                                 request_dir_fsck_afterwards(fs);
 557                                 return 0;
 558                         }
 559                         /*
 560                          * Ensure dcl->limit is small enough to leave room for
 561                          * the checksum tail.
 562                          */
 563                         int max_entries = (fs->blocksize - (dcl_offset +
 564                                                 sizeof(struct ext2_dx_tail))) /
 565                                           sizeof(struct ext2_dx_entry);
 566                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 567                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 568                         /* Always rewrite checksum */
 569                         changed = 1;
 570                 }
 571         } else {
 572                 unsigned int rec_len, name_size;
 573                 char *top = ctx->buf + fs->blocksize;
 574                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 575                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 576
 577                 /* Find last and penultimate dirent */
 578                 while ((char *)de < top) {
 579                         penultimate_de = last_de;
 580                         last_de = de;
 581                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 582                         if (!ctx->errcode && !rec_len)
 583                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 584                         if (ctx->errcode)
 585                                 return BLOCK_ABORT;
 586                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 587                 }
 588                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 589                 if (ctx->errcode)
 590                         return BLOCK_ABORT;
 591                 name_size = ext2fs_dirent_name_len(last_de);
 592
 593                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 594                         if (!penultimate_de)
 595                                 return 0;
 596                         if (last_de->inode ||
 597                             name_size ||
 598                             rec_len != sizeof(struct ext2_dir_entry_tail))
 599                                 return 0;
 600                         /*
 601                          * The last dirent is unused and the right length to
 602                          * have stored a checksum.  Erase it.
 603                          */
 604                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 605                                                           &rec_len);
 606                         if (!rec_len)
 607                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 608                         if (ctx->errcode)
 609                                 return BLOCK_ABORT;
 610                         ext2fs_set_rec_len(fs, rec_len +
 611                                         sizeof(struct ext2_dir_entry_tail),
 612                                         penultimate_de);
 613                         changed = 1;
 614                 } else {
 615                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 616                         struct ext2_dir_entry_tail *t;
 617
 618                         /*
 619                          * If the last dirent looks like the tail, just update
 620                          * the checksum.
 621                          */
 622                         if (!last_de->inode &&
 623                             rec_len == csum_size) {
 624                                 t = (struct ext2_dir_entry_tail *)last_de;
 625                                 t->det_reserved_name_len =
 626                                                 EXT2_DIR_NAME_LEN_CSUM;
 627                                 changed = 1;
 628                                 goto out;
 629                         }
 630                         if (name_size & 3)
 631                                 name_size = (name_size & ~3) + 4;
 632                         /* If there's not enough space for the tail, e2fsck */
 633                         if (rec_len <= (8 + name_size + csum_size)) {
 634                                 request_dir_fsck_afterwards(fs);
 635                                 return 0;
 636                         }
 637                         /* Shorten that last de and insert the tail */
 638                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 639                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 640                         ext2fs_initialize_dirent_tail(fs, t);
 641
 642                         /* Always update checksum */
 643                         changed = 1;
 644                 }
 645         }
 646
 647 out:
 648         if (!changed)
 649                 return 0;
 650
 651         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 652                                                0, ctx->dir);
 653         if (ctx->errcode)
 654                 return BLOCK_ABORT;
 655
 656         return 0;
 657 }
 658
 659 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 660                                    struct ext2_inode *inode)
 661 {
 662         errcode_t       retval;
 663         struct rewrite_dir_context ctx;
 664
 665         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 666         if (retval)
 667                 return retval;
 668
 669         ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
 670         ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
 671         ctx.dir = dir;
 672         ctx.errcode = 0;
 673         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 674                                                 BLOCK_FLAG_DATA_ONLY,
 675                                        0, rewrite_dir_block, &ctx);
 676
 677         ext2fs_free_mem(&ctx.buf);
 678         if (retval)
 679                 return retval;
 680
 681         if (ctx.is_htree && ctx.clear_htree) {
 682                 inode->i_flags &= ~EXT2_INDEX_FL;
 683                 retval = ext2fs_write_inode(fs, dir, inode);
 684                 if (retval)
 685                         return retval;
 686         }
 687
 688         return ctx.errcode;
 689 }
 690
 691 /*
 692  * Context information that does not change across rewrite_one_inode()
 693  * invocations.
 694  */
 695 struct rewrite_context {
 696         ext2_filsys fs;
 697         struct ext2_inode *zero_inode;
 698         char *ea_buf;
 699         int inode_size;
 700 };
 701
 702 #define fatal_err(code, args...)                \
 703         do {                                    \
 704                 com_err(__func__, code, args);  \
 705                 exit(1);                        \
 706         } while (0);
 707
 708 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 709                                  struct ext2_inode *inode)
 710 {
 711         errcode_t retval;
 712         ext2_file_t file;
 713         __u32 hash;
 714
 715         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 716         if (retval)
 717                 fatal_err(retval, "open ea_inode");
 718         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 719                                   NULL);
 720         if (retval)
 721                 fatal_err(retval, "read ea_inode");
 722         retval = ext2fs_file_close(file);
 723         if (retval)
 724                 fatal_err(retval, "close ea_inode");
 725
 726         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 727                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 728         ext2fs_set_ea_inode_hash(inode, hash);
 729 }
 730
 731 static int update_xattr_entry_hashes(ext2_filsys fs,
 732                                      struct ext2_ext_attr_entry *entry,
 733                                      struct ext2_ext_attr_entry *end)
 734 {
 735         int modified = 0;
 736         errcode_t retval;
 737
 738         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 739                 if (entry->e_value_inum) {
 740                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 741                                                              &entry->e_hash);
 742                         if (retval)
 743                                 fatal_err(retval, "hash ea_inode entry");
 744                         modified = 1;
 745                 }
 746                 entry = EXT2_EXT_ATTR_NEXT(entry);
 747         }
 748         return modified;
 749 }
 750
 751 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 752                                        struct ext2_inode_large *inode)
 753 {
 754         struct ext2_ext_attr_entry *start, *end;
 755         __u32 *ea_magic;
 756
 757         if (inode->i_extra_isize == 0)
 758                 return;
 759
 760         if (inode->i_extra_isize & 3 ||
 761             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 762                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 763
 764         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 765                                 inode->i_extra_isize);
 766         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 767                 return;
 768
 769         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 770         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 771
 772         update_xattr_entry_hashes(ctx->fs, start, end);
 773 }
 774
 775 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 776                                       char *block_buf)
 777 {
 778         struct ext2_ext_attr_header *header;
 779         struct ext2_ext_attr_entry *start, *end;
 780
 781         header = (struct ext2_ext_attr_header *)block_buf;
 782         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 783                 return;
 784
 785         start = (struct ext2_ext_attr_entry *)(header+1);
 786         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 787
 788         if (update_xattr_entry_hashes(ctx->fs, start, end))
 789                 ext2fs_ext_attr_block_rehash(header, end);
 790 }
 791
 792 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 793                               struct ext2_inode *inode)
 794 {
 795         blk64_t file_acl_block;
 796         errcode_t retval;
 797
 798         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 799                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 800                         return;
 801                 memset(inode, 0, ctx->inode_size);
 802         }
 803
 804         if (inode->i_flags & EXT4_EA_INODE_FL)
 805                 update_ea_inode_hash(ctx, ino, inode);
 806
 807         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 808                 update_inline_xattr_hashes(ctx,
 809                                            (struct ext2_inode_large *)inode);
 810
 811         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 812         if (retval)
 813                 fatal_err(retval, "while writing inode");
 814
 815         retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
 816         if (retval)
 817                 fatal_err(retval, "while rewriting extents");
 818
 819         if (LINUX_S_ISDIR(inode->i_mode) &&
 820             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 821                 retval = rewrite_directory(ctx->fs, ino, inode);
 822                 if (retval)
 823                         fatal_err(retval, "while rewriting directories");
 824         }
 825
 826         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 827         if (!file_acl_block)
 828                 return;
 829
 830         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 831                                        ino);
 832         if (retval)
 833                 fatal_err(retval, "while rewriting extended attribute");
 834
 835         update_block_xattr_hashes(ctx, ctx->ea_buf);
 836         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 837                                         ino);
 838         if (retval)
 839                 fatal_err(retval, "while rewriting extended attribute");
 840 }
 841
 842 #define REWRITE_EA_FL           0x01    /* Rewrite EA inodes */
 843 #define REWRITE_DIR_FL          0x02    /* Rewrite directories */
 844 #define REWRITE_NONDIR_FL       0x04    /* Rewrite other inodes */
 845 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
 846
 847 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
 848 {
 849         ext2_inode_scan scan;
 850         errcode_t       retval;
 851         ext2_ino_t      ino;
 852         struct ext2_inode *inode;
 853         int rewrite;
 854
 855         retval = ext2fs_get_mem(ctx->inode_size, &inode);
 856         if (retval)
 857                 fatal_err(retval, "while allocating memory");
 858
 859         retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
 860         if (retval)
 861                 fatal_err(retval, "while opening inode scan");
 862
 863         do {
 864                 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 865                                                     ctx->inode_size);
 866                 if (retval)
 867                         fatal_err(retval, "while getting next inode");
 868                 if (!ino)
 869                         break;
 870
 871                 rewrite = 0;
 872                 if (inode->i_flags & EXT4_EA_INODE_FL) {
 873                         if (flags & REWRITE_EA_FL)
 874                                 rewrite = 1;
 875                 } else if (LINUX_S_ISDIR(inode->i_mode)) {
 876                         if (flags & REWRITE_DIR_FL)
 877                                 rewrite = 1;
 878                 } else {
 879                         if (flags & REWRITE_NONDIR_FL)
 880                                 rewrite = 1;
 881                 }
 882                 if (rewrite)
 883                         rewrite_one_inode(ctx, ino, inode);
 884         } while (ino);
 885         ext2fs_close_inode_scan(scan);
 886         ext2fs_free_mem(&inode);
 887 }
 888
 889 /*
 890  * Forcibly rewrite checksums in inodes specified by 'flags'
 891  */
 892 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
 893 {
 894         struct rewrite_context ctx = {
 895                 .fs = fs,
 896                 .inode_size = EXT2_INODE_SIZE(fs->super),
 897         };
 898         errcode_t retval;
 899
 900         if (fs->super->s_creator_os == EXT2_OS_HURD)
 901                 return;
 902
 903         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 904         if (retval)
 905                 fatal_err(retval, "while allocating memory");
 906
 907         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 908         if (retval)
 909                 fatal_err(retval, "while allocating memory");
 910
 911         /*
 912          * Extended attribute inodes have a lookup hash that needs to be
 913          * recalculated with the new csum_seed. Other inodes referencing xattr
 914          * inodes need this value to be up to date. That's why we do two passes:
 915          *
 916          * pass 1: update xattr inodes to update their lookup hash as well as
 917          *         other checksums.
 918          *
 919          * pass 2: go over other inodes to update their checksums.
 920          */
 921         if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
 922                 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
 923         flags &= ~REWRITE_EA_FL;
 924         rewrite_inodes_pass(&ctx, flags);
 925
 926         ext2fs_free_mem(&ctx.zero_inode);
 927         ext2fs_free_mem(&ctx.ea_buf);
 928 }
 929
 930 static void rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
 931 {
 932         errcode_t retval;
 933         dgrp_t i;
 934
 935         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 936         ext2fs_init_csum_seed(fs);
 937         for (i = 0; i < fs->group_desc_count; i++)
 938                 ext2fs_group_desc_csum_set(fs, i);
 939         retval = ext2fs_read_bitmaps(fs);
 940         if (retval)
 941                 fatal_err(retval, "while reading bitmaps");
 942         rewrite_inodes(fs, flags);
 943         ext2fs_mark_ib_dirty(fs);
 944         ext2fs_mark_bb_dirty(fs);
 945         ext2fs_mmp_update2(fs, 1);
 946         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 947         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 948         if (ext2fs_has_feature_metadata_csum(fs->super))
 949                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 950         else
 951                 fs->super->s_checksum_type = 0;
 952         ext2fs_mark_super_dirty(fs);
 953 }
 954
 955 static void enable_uninit_bg(ext2_filsys fs)
 956 {
 957         struct ext2_group_desc *gd;
 958         dgrp_t i;
 959
 960         for (i = 0; i < fs->group_desc_count; i++) {
 961                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
 962                 gd->bg_itable_unused = 0;
 963                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
 964                 ext2fs_group_desc_csum_set(fs, i);
 965         }
 966         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 967 }
 968
 969 static errcode_t zero_empty_inodes(ext2_filsys fs)
 970 {
 971         int length = EXT2_INODE_SIZE(fs->super);
 972         struct ext2_inode *inode = NULL;
 973         ext2_inode_scan scan;
 974         errcode_t       retval;
 975         ext2_ino_t      ino;
 976
 977         retval = ext2fs_open_inode_scan(fs, 0, &scan);
 978         if (retval)
 979                 goto out;
 980
 981         retval = ext2fs_get_mem(length, &inode);
 982         if (retval)
 983                 goto out;
 984
 985         do {
 986                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
 987                 if (retval)
 988                         goto out;
 989                 if (!ino)
 990                         break;
 991                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
 992                         memset(inode, 0, length);
 993                         retval = ext2fs_write_inode_full(fs, ino, inode,
 994                                                          length);
 995                         if (retval)
 996                                 goto out;
 997                 }
 998         } while (1);
 999
1000 out:
1001         ext2fs_free_mem(&inode);
1002         ext2fs_close_inode_scan(scan);
1003         return retval;
1004 }
1005
1006 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1007 {
1008         struct ext2_group_desc *gd;
1009         dgrp_t i;
1010         errcode_t retval;
1011         blk64_t b, c, d;
1012
1013         /* Load bitmaps to ensure that the uninit ones get written out */
1014         fs->super->s_feature_ro_compat |= csum_feature_flag;
1015         retval = ext2fs_read_bitmaps(fs);
1016         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1017         if (retval) {
1018                 com_err("disable_uninit_bg", retval,
1019                         "while reading bitmaps");
1020                 request_fsck_afterwards(fs);
1021                 return retval;
1022         }
1023         ext2fs_mark_ib_dirty(fs);
1024         ext2fs_mark_bb_dirty(fs);
1025
1026         /* If we're only turning off uninit_bg, zero the inodes */
1027         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1028                 retval = zero_empty_inodes(fs);
1029                 if (retval) {
1030                         com_err("disable_uninit_bg", retval,
1031                                 "while zeroing unused inodes");
1032                         request_fsck_afterwards(fs);
1033                         return retval;
1034                 }
1035         }
1036
1037         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1038         for (i = 0; i < fs->group_desc_count; i++) {
1039                 b = ext2fs_block_bitmap_loc(fs, i);
1040                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1041                 b = ext2fs_inode_bitmap_loc(fs, i);
1042                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1043
1044                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1045                 if (retval == 0 && b)
1046                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1047                 if (retval == 0 && c)
1048                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1049                 if (retval == 0 && d)
1050                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1051                 if (retval) {
1052                         com_err("disable_uninit_bg", retval,
1053                                 "while initializing block bitmaps");
1054                         request_fsck_afterwards(fs);
1055                 }
1056
1057                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1058                 gd->bg_itable_unused = 0;
1059                 gd->bg_flags = 0;
1060                 ext2fs_group_desc_csum_set(fs, i);
1061         }
1062         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1063         ext2fs_mark_super_dirty(fs);
1064
1065         return 0;
1066 }
1067
1068 static void
1069 try_confirm_csum_seed_support(void)
1070 {
1071         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1072                 fputs(_("WARNING: Could not confirm kernel support for "
1073                         "metadata_csum_seed.\n  This requires Linux >= "
1074                         "v4.4.\n"), stderr);
1075 }
1076
1077 /*
1078  * Update the feature set as provided by the user.
1079  */
1080 static int update_feature_set(ext2_filsys fs, char *features)
1081 {
1082         struct ext2_super_block *sb = fs->super;
1083         __u32           old_features[3];
1084         int             type_err;
1085         unsigned int    mask_err;
1086         errcode_t       err;
1087         enum quota_type qtype;
1088
1089 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1090                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1091 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1092                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1093 #define FEATURE_CHANGED(type, mask) ((mask) & \
1094                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1095
1096         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1097         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1098         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1099
1100         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1101                               ok_features, clear_ok_features,
1102                               &type_err, &mask_err)) {
1103                 if (!mask_err)
1104                         fprintf(stderr,
1105                                 _("Invalid filesystem option set: %s\n"),
1106                                 features);
1107                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1108                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1109                                           "not supported.\n"),
1110                                 e2p_feature2string(type_err &
1111                                                    E2P_FEATURE_TYPE_MASK,
1112                                                    mask_err));
1113                 else
1114                         fprintf(stderr, _("Setting filesystem feature '%s' "
1115                                           "not supported.\n"),
1116                                 e2p_feature2string(type_err, mask_err));
1117                 return 1;
1118         }
1119
1120         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1121                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1122                     !(mount_flags & EXT2_MF_READONLY)) {
1123                         fputs(_("The has_journal feature may only be "
1124                                 "cleared when the filesystem is\n"
1125                                 "unmounted or mounted "
1126                                 "read-only.\n"), stderr);
1127                         return 1;
1128                 }
1129                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1130                     f_flag < 2) {
1131                         fputs(_("The needs_recovery flag is set.  "
1132                                 "Please run e2fsck before clearing\n"
1133                                 "the has_journal flag.\n"), stderr);
1134                         return 1;
1135                 }
1136                 if (sb->s_journal_inum) {
1137                         if (remove_journal_inode(fs))
1138                                 return 1;
1139                 }
1140                 if (sb->s_journal_dev) {
1141                         if (remove_journal_device(fs))
1142                                 return 1;
1143                 }
1144         }
1145
1146         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1147                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1148                 if (ext2fs_has_feature_meta_bg(sb)) {
1149                         fputs(_("Setting filesystem feature 'sparse_super' "
1150                                 "not supported\nfor filesystems with "
1151                                 "the meta_bg feature enabled.\n"),
1152                                 stderr);
1153                         return 1;
1154                 }
1155         }
1156
1157         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1158                 int error;
1159
1160                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1161                     (mount_flags & EXT2_MF_READONLY)) {
1162                         fputs(_("The multiple mount protection feature can't\n"
1163                                 "be set if the filesystem is mounted or\n"
1164                                 "read-only.\n"), stderr);
1165                         return 1;
1166                 }
1167
1168                 error = ext2fs_mmp_init(fs);
1169                 if (error) {
1170                         fputs(_("\nError while enabling multiple mount "
1171                                 "protection feature."), stderr);
1172                         return 1;
1173                 }
1174
1175                 /*
1176                  * We want to update group desc with the new free blocks count
1177                  */
1178                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1179
1180                 printf(_("Multiple mount protection has been enabled "
1181                          "with update interval %ds.\n"),
1182                        sb->s_mmp_update_interval);
1183         }
1184
1185         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1186                 int error;
1187
1188                 if (mount_flags & EXT2_MF_READONLY) {
1189                         fputs(_("The multiple mount protection feature cannot\n"
1190                                 "be disabled if the filesystem is readonly.\n"),
1191                                 stderr);
1192                         return 1;
1193                 }
1194
1195                 error = ext2fs_read_bitmaps(fs);
1196                 if (error) {
1197                         fputs(_("Error while reading bitmaps\n"), stderr);
1198                         return 1;
1199                 }
1200
1201                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1202                 if (error) {
1203                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1204
1205                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1206                                 printf(_("Magic number in MMP block does not "
1207                                          "match. expected: %x, actual: %x\n"),
1208                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1209                         else
1210                                 com_err(program_name, error, "%s",
1211                                         _("while reading MMP block."));
1212                         goto mmp_error;
1213                 }
1214
1215                 /* We need to force out the group descriptors as well */
1216                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1217                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1218 mmp_error:
1219                 sb->s_mmp_block = 0;
1220                 sb->s_mmp_update_interval = 0;
1221         }
1222
1223         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1224                 /*
1225                  * If adding a journal flag, let the create journal
1226                  * code below handle setting the flag and creating the
1227                  * journal.  We supply a default size if necessary.
1228                  */
1229                 if (!journal_size)
1230                         journal_size = -1;
1231                 ext2fs_clear_feature_journal(sb);
1232         }
1233
1234         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1235                 if (!sb->s_def_hash_version)
1236                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1237                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1238                         uuid_generate((unsigned char *) sb->s_hash_seed);
1239         }
1240
1241         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1242             ext2fs_has_feature_metadata_csum(sb)) {
1243                 if (check_fsck_needed(fs,
1244                         _("Disabling directory index on filesystem with "
1245                           "checksums could take some time.")))
1246                         return 1;
1247                 if (mount_flags & EXT2_MF_MOUNTED) {
1248                         fputs(_("Cannot disable dir_index on a mounted "
1249                                 "filesystem!\n"), stderr);
1250                         exit(1);
1251                 }
1252                 /*
1253                  * Clearing dir_index on checksummed filesystem requires
1254                  * rewriting all directories to update checksums.
1255                  */
1256                 rewrite_checksums |= REWRITE_DIR_FL;
1257         }
1258
1259         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1260                 if (ext2fs_check_desc(fs)) {
1261                         fputs(_("Clearing the flex_bg flag would "
1262                                 "cause the the filesystem to be\n"
1263                                 "inconsistent.\n"), stderr);
1264                         return 1;
1265                 }
1266         }
1267
1268         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1269                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1270                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1271                     !(mount_flags & EXT2_MF_READONLY)) {
1272                         fputs(_("The huge_file feature may only be "
1273                                 "cleared when the filesystem is\n"
1274                                 "unmounted or mounted "
1275                                 "read-only.\n"), stderr);
1276                         return 1;
1277                 }
1278         }
1279
1280         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1281                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1282                 if (check_fsck_needed(fs,
1283                         _("Enabling checksums could take some time.")))
1284                         return 1;
1285                 if (mount_flags & EXT2_MF_MOUNTED) {
1286                         fputs(_("Cannot enable metadata_csum on a mounted "
1287                                 "filesystem!\n"), stderr);
1288                         return 1;
1289                 }
1290                 if (!ext2fs_has_feature_extents(fs->super))
1291                         printf("%s",
1292                                _("Extents are not enabled.  The file extent "
1293                                  "tree can be checksummed, whereas block maps "
1294                                  "cannot.  Not enabling extents reduces the "
1295                                  "coverage of metadata checksumming.  "
1296                                  "Re-run with -O extent to rectify.\n"));
1297                 if (!ext2fs_has_feature_64bit(fs->super))
1298                         printf("%s",
1299                                _("64-bit filesystem support is not enabled.  "
1300                                  "The larger fields afforded by this feature "
1301                                  "enable full-strength checksumming.  "
1302                                  "Run resize2fs -b to rectify.\n"));
1303                 rewrite_checksums = REWRITE_ALL;
1304                 /* metadata_csum supersedes uninit_bg */
1305                 ext2fs_clear_feature_gdt_csum(fs->super);
1306
1307                 /* if uninit_bg was previously off, rewrite group desc */
1308                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1309                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1310                         enable_uninit_bg(fs);
1311
1312                 /*
1313                  * Since metadata_csum supersedes uninit_bg, pretend like
1314                  * uninit_bg has been off all along.
1315                  */
1316                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1317                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1318         }
1319
1320         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1321                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1322                 __u32   test_features[3];
1323
1324                 if (check_fsck_needed(fs,
1325                         _("Disabling checksums could take some time.")))
1326                         return 1;
1327                 if (mount_flags & EXT2_MF_MOUNTED) {
1328                         fputs(_("Cannot disable metadata_csum on a mounted "
1329                                 "filesystem!\n"), stderr);
1330                         return 1;
1331                 }
1332                 rewrite_checksums = REWRITE_ALL;
1333
1334                 /* Enable uninit_bg unless the user expressly turned it off */
1335                 memcpy(test_features, old_features, sizeof(test_features));
1336                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1337                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1338                 e2p_edit_feature2(features, test_features, ok_features,
1339                                   clear_ok_features, NULL, NULL);
1340                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1341                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1342                         ext2fs_set_feature_gdt_csum(fs->super);
1343
1344                 /*
1345                  * If we're turning off metadata_csum and not turning on
1346                  * uninit_bg, rewrite group desc.
1347                  */
1348                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1349                         err = disable_uninit_bg(fs,
1350                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1351                         if (err)
1352                                 return 1;
1353                 } else
1354                         /*
1355                          * metadata_csum previously provided uninit_bg, so if
1356                          * we're also setting the uninit_bg feature bit,
1357                          * pretend like it was previously enabled.  Checksums
1358                          * will be rewritten with crc16 later.
1359                          */
1360                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1361                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1362                 fs->super->s_checksum_seed = 0;
1363                 ext2fs_clear_feature_csum_seed(fs->super);
1364         }
1365
1366         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1367                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1368                 if (mount_flags & EXT2_MF_MOUNTED) {
1369                         fputs(_("Cannot enable uninit_bg on a mounted "
1370                                 "filesystem!\n"), stderr);
1371                         return 1;
1372                 }
1373
1374                 /* Do not enable uninit_bg when metadata_csum enabled */
1375                 if (ext2fs_has_feature_metadata_csum(fs->super))
1376                         ext2fs_clear_feature_gdt_csum(fs->super);
1377                 else
1378                         enable_uninit_bg(fs);
1379         }
1380
1381         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1382                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1383                 if (mount_flags & EXT2_MF_MOUNTED) {
1384                         fputs(_("Cannot disable uninit_bg on a mounted "
1385                                 "filesystem!\n"), stderr);
1386                         return 1;
1387                 }
1388
1389                 err = disable_uninit_bg(fs,
1390                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1391                 if (err)
1392                         return 1;
1393         }
1394
1395         /*
1396          * We don't actually toggle 64bit; resize2fs does that.  But this
1397          * must come after the metadata_csum feature_on so that it won't
1398          * complain about the lack of 64bit.
1399          */
1400         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1401                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1402                 if (mount_flags & EXT2_MF_MOUNTED) {
1403                         fprintf(stderr, _("Cannot enable 64-bit mode "
1404                                           "while mounted!\n"));
1405                         return 1;
1406                 }
1407                 ext2fs_clear_feature_64bit(sb);
1408                 feature_64bit = 1;
1409         }
1410         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1411                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1412                 if (mount_flags & EXT2_MF_MOUNTED) {
1413                         fprintf(stderr, _("Cannot disable 64-bit mode "
1414                                           "while mounted!\n"));
1415                         return 1;
1416                 }
1417                 ext2fs_set_feature_64bit(sb);
1418                 feature_64bit = -1;
1419         }
1420
1421         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1422                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1423                 /*
1424                  * Set the Q_flag here and handle the quota options in the code
1425                  * below.
1426                  */
1427                 if (!Q_flag) {
1428                         Q_flag = 1;
1429                         /* Enable usr/grp quota by default */
1430                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1431                                 if (qtype != PRJQUOTA)
1432                                         quota_enable[qtype] = QOPT_ENABLE;
1433                                 else
1434                                         quota_enable[qtype] = QOPT_DISABLE;
1435                         }
1436                 }
1437                 ext2fs_clear_feature_quota(sb);
1438         }
1439
1440         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1441                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1442                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1443                         fprintf(stderr, _("Cannot enable project feature; "
1444                                           "inode size too small.\n"));
1445                         return 1;
1446                 }
1447                 Q_flag = 1;
1448                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1449         }
1450
1451         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1452                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1453                 Q_flag = 1;
1454                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1455         }
1456
1457         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1458                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1459                 /*
1460                  * Set the Q_flag here and handle the quota options in the code
1461                  * below.
1462                  */
1463                 if (Q_flag)
1464                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1465                                 "arguments.\n"), stderr);
1466                 Q_flag = 1;
1467                 /* Disable all quota by default */
1468                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1469                         quota_enable[qtype] = QOPT_DISABLE;
1470         }
1471
1472         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1473                 fs->super->s_encrypt_algos[0] =
1474                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1475                 fs->super->s_encrypt_algos[1] =
1476                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1477         }
1478
1479         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1480                 if (mount_flags & EXT2_MF_MOUNTED) {
1481                         fputs(_("The casefold feature may only be enabled when "
1482                                 "the filesystem is unmounted.\n"), stderr);
1483                         return 1;
1484                 }
1485                 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1486                 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1487                 enabling_casefold = 1;
1488         }
1489
1490         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1491                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1492                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1493                         fputs(_("Setting feature 'metadata_csum_seed' "
1494                                 "is only supported\non filesystems with "
1495                                 "the metadata_csum feature enabled.\n"),
1496                                 stderr);
1497                         return 1;
1498                 }
1499                 try_confirm_csum_seed_support();
1500                 fs->super->s_checksum_seed = fs->csum_seed;
1501         }
1502
1503         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1504                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1505                 __le32 uuid_seed;
1506
1507                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1508                                         sizeof(fs->super->s_uuid));
1509                 if (fs->super->s_checksum_seed != uuid_seed) {
1510                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1511                                 fputs(_("UUID has changed since enabling "
1512                 "metadata_csum.  Filesystem must be unmounted "
1513                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1514                                       stderr);
1515                                 return 1;
1516                         }
1517                         if (check_fsck_needed(fs, _("Recalculating checksums "
1518                                                     "could take some time.")))
1519                                 return 1;
1520                         rewrite_checksums = REWRITE_ALL;
1521                 }
1522         }
1523
1524         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1525             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1526              sb->s_feature_incompat))
1527                 ext2fs_update_dynamic_rev(fs);
1528
1529         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1530                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1531             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1532                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1533             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1534                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1535             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1536                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1537             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1538                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1539                 request_fsck_afterwards(fs);
1540
1541         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1542             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1543             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1544                 ext2fs_mark_super_dirty(fs);
1545
1546         return 0;
1547 }
1548
1549 /*
1550  * Add a journal to the filesystem.
1551  */
1552 static int add_journal(ext2_filsys fs)
1553 {
1554         struct ext2fs_journal_params    jparams;
1555         errcode_t       retval;
1556         ext2_filsys     jfs;
1557         io_manager      io_ptr;
1558
1559         if (ext2fs_has_feature_journal(fs->super)) {
1560                 fputs(_("The filesystem already has a journal.\n"), stderr);
1561                 goto err;
1562         }
1563         if (journal_device) {
1564                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1565                                         NULL))
1566                         proceed_question(-1);
1567                 check_mount(journal_device, 0, _("journal"));
1568 #ifdef CONFIG_TESTIO_DEBUG
1569                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1570                         io_ptr = test_io_manager;
1571                         test_io_backing_manager = unix_io_manager;
1572                 } else
1573 #endif
1574                         io_ptr = unix_io_manager;
1575                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1576                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1577                                      fs->blocksize, io_ptr, &jfs);
1578                 if (retval) {
1579                         com_err(program_name, retval,
1580                                 _("\n\twhile trying to open journal on %s\n"),
1581                                 journal_device);
1582                         goto err;
1583                 }
1584                 printf(_("Creating journal on device %s: "),
1585                        journal_device);
1586                 fflush(stdout);
1587
1588                 retval = ext2fs_add_journal_device(fs, jfs);
1589                 ext2fs_close_free(&jfs);
1590                 if (retval) {
1591                         com_err(program_name, retval,
1592                                 _("while adding filesystem to journal on %s"),
1593                                 journal_device);
1594                         goto err;
1595                 }
1596                 fputs(_("done\n"), stdout);
1597         } else if (journal_size) {
1598                 fputs(_("Creating journal inode: "), stdout);
1599                 fflush(stdout);
1600                 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1601
1602                 if (journal_location_string)
1603                         journal_location =
1604                                 parse_num_blocks2(journal_location_string,
1605                                                   fs->super->s_log_block_size);
1606                 retval = ext2fs_add_journal_inode3(fs, &jparams,
1607                                                    journal_location,
1608                                                    journal_flags);
1609                 if (retval) {
1610                         fprintf(stderr, "\n");
1611                         com_err(program_name, retval, "%s",
1612                                 _("\n\twhile trying to create journal file"));
1613                         return retval;
1614                 } else
1615                         fputs(_("done\n"), stdout);
1616                 /*
1617                  * If the filesystem wasn't mounted, we need to force
1618                  * the block group descriptors out.
1619                  */
1620                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1621                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1622         }
1623         print_check_message(fs->super->s_max_mnt_count,
1624                             fs->super->s_checkinterval);
1625         return 0;
1626
1627 err:
1628         free(journal_device);
1629         return 1;
1630 }
1631
1632 static int handle_quota_options(ext2_filsys fs)
1633 {
1634         errcode_t retval;
1635         quota_ctx_t qctx;
1636         ext2_ino_t qf_ino;
1637         enum quota_type qtype;
1638         unsigned int qtype_bits = 0;
1639         int need_dirty = 0;
1640
1641         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1642                 if (quota_enable[qtype] != 0)
1643                         break;
1644         if (qtype == MAXQUOTAS)
1645                 /* Nothing to do. */
1646                 return 0;
1647
1648         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1649             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1650                 fprintf(stderr, _("Cannot enable project quota; "
1651                                   "inode size too small.\n"));
1652                 return 1;
1653         }
1654
1655         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1656                 if (quota_enable[qtype] == QOPT_ENABLE)
1657                         qtype_bits |= 1 << qtype;
1658         }
1659
1660         retval = quota_init_context(&qctx, fs, qtype_bits);
1661         if (retval) {
1662                 com_err(program_name, retval,
1663                         _("while initializing quota context in support library"));
1664                 return 1;
1665         }
1666
1667         if (qtype_bits)
1668                 quota_compute_usage(qctx);
1669
1670         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1671                 if (quota_enable[qtype] == QOPT_ENABLE &&
1672                     *quota_sb_inump(fs->super, qtype) == 0) {
1673                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1674                                 retval = quota_update_limits(qctx, qf_ino,
1675                                                              qtype);
1676                                 if (retval) {
1677                                         com_err(program_name, retval,
1678                                                 _("while updating quota limits (%d)"),
1679                                                 qtype);
1680                                 quota_errout:
1681                                         quota_release_context(&qctx);
1682                                         return 1;
1683                                 }
1684                         }
1685                         retval = quota_write_inode(qctx, 1 << qtype);
1686                         if (retval) {
1687                                 com_err(program_name, retval,
1688                                         _("while writing quota file (%d)"),
1689                                         qtype);
1690                                 goto quota_errout;
1691                         }
1692                         /* Enable Quota feature if one of quota enabled */
1693                         if (!ext2fs_has_feature_quota(fs->super)) {
1694                                 ext2fs_set_feature_quota(fs->super);
1695                                 need_dirty = 1;
1696                         }
1697                         if (qtype == PRJQUOTA &&
1698                             !ext2fs_has_feature_project(fs->super)) {
1699                                 ext2fs_set_feature_project(fs->super);
1700                                 need_dirty = 1;
1701                         }
1702                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1703                         retval = quota_remove_inode(fs, qtype);
1704                         if (retval) {
1705                                 com_err(program_name, retval,
1706                                         _("while removing quota file (%d)"),
1707                                         qtype);
1708                                 goto quota_errout;
1709                         }
1710                         if (qtype == PRJQUOTA) {
1711                                 ext2fs_clear_feature_project(fs->super);
1712                                 need_dirty = 1;
1713                         }
1714                 }
1715         }
1716
1717         quota_release_context(&qctx);
1718         /* Clear Quota feature if all quota types disabled. */
1719         if (!qtype_bits) {
1720                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1721                         if (*quota_sb_inump(fs->super, qtype))
1722                                 break;
1723                 if (qtype == MAXQUOTAS) {
1724                         ext2fs_clear_feature_quota(fs->super);
1725                         need_dirty = 1;
1726                 }
1727
1728         }
1729         if (need_dirty)
1730                 ext2fs_mark_super_dirty(fs);
1731         return 0;
1732 }
1733
1734 static int option_handle_function(char *token)
1735 {
1736         if (strncmp(token, "usr", 3) == 0) {
1737                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1738         } else if (strncmp(token, "^usr", 4) == 0) {
1739                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1740         } else if (strncmp(token, "grp", 3) == 0) {
1741                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1742         } else if (strncmp(token, "^grp", 4) == 0) {
1743                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1744         } else if (strncmp(token, "prj", 3) == 0) {
1745                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1746         } else if (strncmp(token, "^prj", 4) == 0) {
1747                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1748         } else {
1749                 fputs(_("\nBad quota options specified.\n\n"
1750                         "Following valid quota options are available "
1751                         "(pass by separating with comma):\n"
1752                         "\t[^]usr[quota]\n"
1753                         "\t[^]grp[quota]\n"
1754                         "\t[^]prj[quota]\n"
1755                         "\n\n"), stderr);
1756                 return 1;
1757         }
1758         return 0;
1759 }
1760
1761 static void parse_e2label_options(int argc, char ** argv)
1762 {
1763         if ((argc < 2) || (argc > 3)) {
1764                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1765                 exit(1);
1766         }
1767         io_options = strchr(argv[1], '?');
1768         if (io_options)
1769                 *io_options++ = 0;
1770         device_name = blkid_get_devname(NULL, argv[1], NULL);
1771         if (!device_name) {
1772                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1773                         argv[1]);
1774                 exit(1);
1775         }
1776         open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1777         if (argc == 3) {
1778                 open_flag |= EXT2_FLAG_RW;
1779                 L_flag = 1;
1780                 new_label = argv[2];
1781         } else
1782                 print_label++;
1783 }
1784
1785 static time_t parse_time(char *str)
1786 {
1787         struct  tm      ts;
1788
1789         if (strcmp(str, "now") == 0) {
1790                 return (time(0));
1791         }
1792         memset(&ts, 0, sizeof(ts));
1793 #ifdef HAVE_STRPTIME
1794         strptime(str, "%Y%m%d%H%M%S", &ts);
1795 #else
1796         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1797                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1798         ts.tm_year -= 1900;
1799         ts.tm_mon -= 1;
1800         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1801             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1802             ts.tm_min > 59 || ts.tm_sec > 61)
1803                 ts.tm_mday = 0;
1804 #endif
1805         if (ts.tm_mday == 0) {
1806                 com_err(program_name, 0,
1807                         _("Couldn't parse date/time specifier: %s"),
1808                         str);
1809                 usage();
1810         }
1811         ts.tm_isdst = -1;
1812         return (mktime(&ts));
1813 }
1814
1815 static void parse_tune2fs_options(int argc, char **argv)
1816 {
1817         int c;
1818         char *tmp;
1819         struct group *gr;
1820         struct passwd *pw;
1821         int ret;
1822         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1823
1824         open_flag = 0;
1825         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1826         while ((c = getopt(argc, argv, optstring)) != EOF)
1827                 switch (c) {
1828                 case 'c':
1829                         max_mount_count = strtol(optarg, &tmp, 0);
1830                         if (*tmp || max_mount_count > 16000) {
1831                                 com_err(program_name, 0,
1832                                         _("bad mounts count - %s"),
1833                                         optarg);
1834                                 usage();
1835                         }
1836                         if (max_mount_count == 0)
1837                                 max_mount_count = -1;
1838                         c_flag = 1;
1839                         open_flag = EXT2_FLAG_RW;
1840                         break;
1841                 case 'C':
1842                         mount_count = strtoul(optarg, &tmp, 0);
1843                         if (*tmp || mount_count > 16000) {
1844                                 com_err(program_name, 0,
1845                                         _("bad mounts count - %s"),
1846                                         optarg);
1847                                 usage();
1848                         }
1849                         C_flag = 1;
1850                         open_flag = EXT2_FLAG_RW;
1851                         break;
1852                 case 'e':
1853                         if (strcmp(optarg, "continue") == 0)
1854                                 errors = EXT2_ERRORS_CONTINUE;
1855                         else if (strcmp(optarg, "remount-ro") == 0)
1856                                 errors = EXT2_ERRORS_RO;
1857                         else if (strcmp(optarg, "panic") == 0)
1858                                 errors = EXT2_ERRORS_PANIC;
1859                         else {
1860                                 com_err(program_name, 0,
1861                                         _("bad error behavior - %s"),
1862                                         optarg);
1863                                 usage();
1864                         }
1865                         e_flag = 1;
1866                         open_flag = EXT2_FLAG_RW;
1867                         break;
1868                 case 'E':
1869                         extended_cmd = optarg;
1870                         open_flag |= EXT2_FLAG_RW;
1871                         break;
1872                 case 'f': /* Force */
1873                         f_flag++;
1874                         break;
1875                 case 'g':
1876                         resgid = strtoul(optarg, &tmp, 0);
1877                         if (*tmp) {
1878                                 gr = getgrnam(optarg);
1879                                 if (gr == NULL)
1880                                         tmp = optarg;
1881                                 else {
1882                                         resgid = gr->gr_gid;
1883                                         *tmp = 0;
1884                                 }
1885                         }
1886                         if (*tmp) {
1887                                 com_err(program_name, 0,
1888                                         _("bad gid/group name - %s"),
1889                                         optarg);
1890                                 usage();
1891                         }
1892                         g_flag = 1;
1893                         open_flag = EXT2_FLAG_RW;
1894                         break;
1895                 case 'i':
1896                         interval = strtoul(optarg, &tmp, 0);
1897                         switch (*tmp) {
1898                         case 's':
1899                                 tmp++;
1900                                 break;
1901                         case '\0':
1902                         case 'd':
1903                         case 'D': /* days */
1904                                 interval *= 86400;
1905                                 if (*tmp != '\0')
1906                                         tmp++;
1907                                 break;
1908                         case 'm':
1909                         case 'M': /* months! */
1910                                 interval *= 86400 * 30;
1911                                 tmp++;
1912                                 break;
1913                         case 'w':
1914                         case 'W': /* weeks */
1915                                 interval *= 86400 * 7;
1916                                 tmp++;
1917                                 break;
1918                         }
1919                         if (*tmp) {
1920                                 com_err(program_name, 0,
1921                                         _("bad interval - %s"), optarg);
1922                                 usage();
1923                         }
1924                         i_flag = 1;
1925                         open_flag = EXT2_FLAG_RW;
1926                         break;
1927                 case 'j':
1928                         if (!journal_size)
1929                                 journal_size = -1;
1930                         open_flag = EXT2_FLAG_RW;
1931                         break;
1932                 case 'J':
1933                         parse_journal_opts(optarg);
1934                         open_flag = EXT2_FLAG_RW;
1935                         break;
1936                 case 'l':
1937                         l_flag = 1;
1938                         break;
1939                 case 'L':
1940                         new_label = optarg;
1941                         L_flag = 1;
1942                         open_flag |= EXT2_FLAG_RW |
1943                                 EXT2_FLAG_JOURNAL_DEV_OK;
1944                         break;
1945                 case 'm':
1946                         reserved_ratio = strtod(optarg, &tmp);
1947                         if (*tmp || reserved_ratio > 50 ||
1948                             reserved_ratio < 0) {
1949                                 com_err(program_name, 0,
1950                                         _("bad reserved block ratio - %s"),
1951                                         optarg);
1952                                 usage();
1953                         }
1954                         m_flag = 1;
1955                         open_flag = EXT2_FLAG_RW;
1956                         break;
1957                 case 'M':
1958                         new_last_mounted = optarg;
1959                         M_flag = 1;
1960                         open_flag = EXT2_FLAG_RW;
1961                         break;
1962                 case 'o':
1963                         if (mntopts_cmd) {
1964                                 com_err(program_name, 0, "%s",
1965                                         _("-o may only be specified once"));
1966                                 usage();
1967                         }
1968                         mntopts_cmd = optarg;
1969                         open_flag = EXT2_FLAG_RW;
1970                         break;
1971                 case 'O':
1972                         if (features_cmd) {
1973                                 com_err(program_name, 0, "%s",
1974                                         _("-O may only be specified once"));
1975                                 usage();
1976                         }
1977                         features_cmd = optarg;
1978                         open_flag = EXT2_FLAG_RW;
1979                         break;
1980                 case 'Q':
1981                         Q_flag = 1;
1982                         ret = parse_quota_opts(optarg, option_handle_function);
1983                         if (ret)
1984                                 exit(1);
1985                         open_flag = EXT2_FLAG_RW;
1986                         break;
1987                 case 'r':
1988                         reserved_blocks = strtoul(optarg, &tmp, 0);
1989                         if (*tmp) {
1990                                 com_err(program_name, 0,
1991                                         _("bad reserved blocks count - %s"),
1992                                         optarg);
1993                                 usage();
1994                         }
1995                         r_flag = 1;
1996                         open_flag = EXT2_FLAG_RW;
1997                         break;
1998                 case 's': /* Deprecated */
1999                         s_flag = atoi(optarg);
2000                         open_flag = EXT2_FLAG_RW;
2001                         break;
2002                 case 'T':
2003                         T_flag = 1;
2004                         last_check_time = parse_time(optarg);
2005                         open_flag = EXT2_FLAG_RW;
2006                         break;
2007                 case 'u':
2008                                 resuid = strtoul(optarg, &tmp, 0);
2009                                 if (*tmp) {
2010                                         pw = getpwnam(optarg);
2011                                         if (pw == NULL)
2012                                                 tmp = optarg;
2013                                         else {
2014                                                 resuid = pw->pw_uid;
2015                                                 *tmp = 0;
2016                                         }
2017                                 }
2018                                 if (*tmp) {
2019                                         com_err(program_name, 0,
2020                                                 _("bad uid/user name - %s"),
2021                                                 optarg);
2022                                         usage();
2023                                 }
2024                                 u_flag = 1;
2025                                 open_flag = EXT2_FLAG_RW;
2026                                 break;
2027                 case 'U':
2028                         new_UUID = optarg;
2029                         U_flag = 1;
2030                         open_flag = EXT2_FLAG_RW |
2031                                 EXT2_FLAG_JOURNAL_DEV_OK;
2032                         break;
2033                 case 'I':
2034                         new_inode_size = strtoul(optarg, &tmp, 0);
2035                         if (*tmp) {
2036                                 com_err(program_name, 0,
2037                                         _("bad inode size - %s"),
2038                                         optarg);
2039                                 usage();
2040                         }
2041                         if (!((new_inode_size &
2042                                (new_inode_size - 1)) == 0)) {
2043                                 com_err(program_name, 0,
2044                                         _("Inode size must be a "
2045                                           "power of two- %s"),
2046                                         optarg);
2047                                 usage();
2048                         }
2049                         open_flag = EXT2_FLAG_RW;
2050                         I_flag = 1;
2051                         break;
2052                 case 'z':
2053                         undo_file = optarg;
2054                         break;
2055                 default:
2056                         usage();
2057                 }
2058         if (optind < argc - 1 || optind == argc)
2059                 usage();
2060         if (!open_flag && !l_flag)
2061                 usage();
2062         io_options = strchr(argv[optind], '?');
2063         if (io_options)
2064                 *io_options++ = 0;
2065         device_name = blkid_get_devname(NULL, argv[optind], NULL);
2066         if (!device_name) {
2067                 com_err(program_name, 0, _("Unable to resolve '%s'"),
2068                         argv[optind]);
2069                 exit(1);
2070         }
2071 }
2072
2073 #ifdef CONFIG_BUILD_FINDFS
2074 void do_findfs(int argc, char **argv)
2075 {
2076         char    *dev;
2077
2078         if ((argc != 2) ||
2079             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2080                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2081                 exit(2);
2082         }
2083         dev = blkid_get_devname(NULL, argv[1], NULL);
2084         if (!dev) {
2085                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2086                         argv[1]);
2087                 exit(1);
2088         }
2089         puts(dev);
2090         exit(0);
2091 }
2092 #endif
2093
2094 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2095 {
2096         struct ext2_super_block *sb = fs->super;
2097         char    *buf, *token, *next, *p, *arg;
2098         int     len, hash_alg;
2099         int     r_usage = 0;
2100         int encoding = 0;
2101         char    *encoding_flags = NULL;
2102
2103         len = strlen(opts);
2104         buf = malloc(len+1);
2105         if (!buf) {
2106                 fprintf(stderr, "%s",
2107                         _("Couldn't allocate memory to parse options!\n"));
2108                 return 1;
2109         }
2110         strcpy(buf, opts);
2111         for (token = buf; token && *token; token = next) {
2112                 p = strchr(token, ',');
2113                 next = 0;
2114                 if (p) {
2115                         *p = 0;
2116                         next = p+1;
2117                 }
2118                 arg = strchr(token, '=');
2119                 if (arg) {
2120                         *arg = 0;
2121                         arg++;
2122                 }
2123                 if (strcmp(token, "clear-mmp") == 0 ||
2124                     strcmp(token, "clear_mmp") == 0) {
2125                         clear_mmp = 1;
2126                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2127                         unsigned long intv;
2128                         if (!arg) {
2129                                 r_usage++;
2130                                 continue;
2131                         }
2132                         intv = strtoul(arg, &p, 0);
2133                         if (*p) {
2134                                 fprintf(stderr,
2135                                         _("Invalid mmp_update_interval: %s\n"),
2136                                         arg);
2137                                 r_usage++;
2138                                 continue;
2139                         }
2140                         if (intv == 0) {
2141                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2142                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2143                                 fprintf(stderr,
2144                                         _("mmp_update_interval too big: %lu\n"),
2145                                         intv);
2146                                 r_usage++;
2147                                 continue;
2148                         }
2149                         printf(P_("Setting multiple mount protection update "
2150                                   "interval to %lu second\n",
2151                                   "Setting multiple mount protection update "
2152                                   "interval to %lu seconds\n", intv),
2153                                intv);
2154                         sb->s_mmp_update_interval = intv;
2155                         ext2fs_mark_super_dirty(fs);
2156                 } else if (!strcmp(token, "force_fsck")) {
2157                         sb->s_state |= EXT2_ERROR_FS;
2158                         printf(_("Setting filesystem error flag to force fsck.\n"));
2159                         ext2fs_mark_super_dirty(fs);
2160                 } else if (!strcmp(token, "test_fs")) {
2161                         sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2162                         printf("Setting test filesystem flag\n");
2163                         ext2fs_mark_super_dirty(fs);
2164                 } else if (!strcmp(token, "^test_fs")) {
2165                         sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2166                         printf("Clearing test filesystem flag\n");
2167                         ext2fs_mark_super_dirty(fs);
2168                 } else if (strcmp(token, "stride") == 0) {
2169                         if (!arg) {
2170                                 r_usage++;
2171                                 continue;
2172                         }
2173                         stride = strtoul(arg, &p, 0);
2174                         if (*p) {
2175                                 fprintf(stderr,
2176                                         _("Invalid RAID stride: %s\n"),
2177                                         arg);
2178                                 r_usage++;
2179                                 continue;
2180                         }
2181                         stride_set = 1;
2182                 } else if (strcmp(token, "stripe-width") == 0 ||
2183                            strcmp(token, "stripe_width") == 0) {
2184                         if (!arg) {
2185                                 r_usage++;
2186                                 continue;
2187                         }
2188                         stripe_width = strtoul(arg, &p, 0);
2189                         if (*p) {
2190                                 fprintf(stderr,
2191                                         _("Invalid RAID stripe-width: %s\n"),
2192                                         arg);
2193                                 r_usage++;
2194                                 continue;
2195                         }
2196                         stripe_width_set = 1;
2197                 } else if (strcmp(token, "hash_alg") == 0 ||
2198                            strcmp(token, "hash-alg") == 0) {
2199                         if (!arg) {
2200                                 r_usage++;
2201                                 continue;
2202                         }
2203                         hash_alg = e2p_string2hash(arg);
2204                         if (hash_alg < 0) {
2205                                 fprintf(stderr,
2206                                         _("Invalid hash algorithm: %s\n"),
2207                                         arg);
2208                                 r_usage++;
2209                                 continue;
2210                         }
2211                         sb->s_def_hash_version = hash_alg;
2212                         printf(_("Setting default hash algorithm "
2213                                  "to %s (%d)\n"),
2214                                arg, hash_alg);
2215                         ext2fs_mark_super_dirty(fs);
2216                 } else if (!strcmp(token, "mount_opts")) {
2217                         if (!arg) {
2218                                 r_usage++;
2219                                 continue;
2220                         }
2221                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2222                                 fprintf(stderr,
2223                                         "Extended mount options too long\n");
2224                                 continue;
2225                         }
2226                         ext_mount_opts = strdup(arg);
2227                 } else if (!strcmp(token, "encoding")) {
2228                         if (!arg) {
2229                                 r_usage++;
2230                                 continue;
2231                         }
2232                         if (mount_flags & EXT2_MF_MOUNTED) {
2233                                 fputs(_("The casefold feature may only be enabled when "
2234                                         "the filesystem is unmounted.\n"), stderr);
2235                                 r_usage++;
2236                                 continue;
2237                         }
2238                         if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2239                                 fprintf(stderr, _("Cannot alter existing encoding\n"));
2240                                 r_usage++;
2241                                 continue;
2242                         }
2243                         encoding = e2p_str2encoding(arg);
2244                         if (encoding < 0) {
2245                                 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2246                                 r_usage++;
2247                                 continue;
2248                         }
2249                         enabling_casefold = 1;
2250                         sb->s_encoding = encoding;
2251                         printf(_("Setting encoding to '%s'\n"), arg);
2252                         sb->s_encoding_flags =
2253                                 e2p_get_encoding_flags(sb->s_encoding);
2254                 } else if (!strcmp(token, "encoding_flags")) {
2255                         if (!arg) {
2256                                 r_usage++;
2257                                 continue;
2258                         }
2259                         encoding_flags = arg;
2260                 } else
2261                         r_usage++;
2262         }
2263
2264         if (encoding > 0 && !r_usage) {
2265                 sb->s_encoding_flags =
2266                         e2p_get_encoding_flags(sb->s_encoding);
2267
2268                 if (encoding_flags &&
2269                     e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2270                                            &sb->s_encoding_flags)) {
2271                         fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2272                                         encoding_flags);
2273                         r_usage++;
2274                 } else if (encoding_flags)
2275                         printf(_("Setting encoding_flags to '%s'\n"),
2276                                  encoding_flags);
2277                 ext2fs_set_feature_casefold(sb);
2278                 ext2fs_mark_super_dirty(fs);
2279         } else if (encoding_flags && !r_usage) {
2280                 fprintf(stderr, _("error: An encoding must be explicitly "
2281                                   "specified when passing encoding-flags\n"));
2282                 r_usage++;
2283         }
2284         if (r_usage) {
2285                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2286                         "Extended options are separated by commas, "
2287                         "and may take an argument which\n"
2288                         "\tis set off by an equals ('=') sign.\n\n"
2289                         "Valid extended options are:\n"
2290                         "\tclear_mmp\n"
2291                         "\thash_alg=<hash algorithm>\n"
2292                         "\tmount_opts=<extended default mount options>\n"
2293                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2294                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2295                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2296                         "\tforce_fsck\n"
2297                         "\ttest_fs\n"
2298                         "\t^test_fs\n"
2299                         "\tencoding=<encoding>\n"
2300                         "\tencoding_flags=<flags>\n"));
2301                 free(buf);
2302                 return 1;
2303         }
2304         free(buf);
2305
2306         return 0;
2307 }
2308
2309 /*
2310  * Fill in the block bitmap bmap with the information regarding the
2311  * blocks to be moved
2312  */
2313 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2314                             ext2fs_block_bitmap bmap)
2315 {
2316         dgrp_t i;
2317         int retval;
2318         ext2_badblocks_list bb_list = 0;
2319         blk64_t j, needed_blocks = 0;
2320         blk64_t start_blk, end_blk;
2321
2322         retval = ext2fs_read_bb_inode(fs, &bb_list);
2323         if (retval)
2324                 return retval;
2325
2326         for (i = 0; i < fs->group_desc_count; i++) {
2327                 start_blk = ext2fs_inode_table_loc(fs, i) +
2328                                         fs->inode_blocks_per_group;
2329
2330                 end_blk = ext2fs_inode_table_loc(fs, i) +
2331                                         new_ino_blks_per_grp;
2332
2333                 for (j = start_blk; j < end_blk; j++) {
2334                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2335                                 /*
2336                                  * IF the block is a bad block we fail
2337                                  */
2338                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2339                                         ext2fs_badblocks_list_free(bb_list);
2340                                         return ENOSPC;
2341                                 }
2342
2343                                 ext2fs_mark_block_bitmap2(bmap, j);
2344                         } else {
2345                                 /*
2346                                  * We are going to use this block for
2347                                  * inode table. So mark them used.
2348                                  */
2349                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2350                         }
2351                 }
2352                 needed_blocks += end_blk - start_blk;
2353         }
2354
2355         ext2fs_badblocks_list_free(bb_list);
2356         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2357                 return ENOSPC;
2358
2359         return 0;
2360 }
2361
2362 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2363 {
2364         dgrp_t group;
2365         group = ext2fs_group_of_blk2(fs, blk);
2366         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2367                 return 1;
2368         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2369                 return 1;
2370         return 0;
2371 }
2372
2373 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2374 {
2375         blk64_t start_blk, end_blk;
2376         start_blk = fs->super->s_first_data_block +
2377                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2378         /*
2379          * We cannot get new block beyond end_blk for for the last block group
2380          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2381          */
2382         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2383         if (blk >= start_blk && blk <= end_blk)
2384                 return 1;
2385         return 0;
2386 }
2387
2388 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2389 {
2390
2391         char *buf;
2392         dgrp_t group = 0;
2393         errcode_t retval;
2394         int meta_data = 0;
2395         blk64_t blk, new_blk, goal;
2396         struct blk_move *bmv;
2397
2398         retval = ext2fs_get_mem(fs->blocksize, &buf);
2399         if (retval)
2400                 return retval;
2401
2402         for (new_blk = blk = fs->super->s_first_data_block;
2403              blk < ext2fs_blocks_count(fs->super); blk++) {
2404                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2405                         continue;
2406
2407                 if (ext2fs_is_meta_block(fs, blk)) {
2408                         /*
2409                          * If the block is mapping a fs meta data block
2410                          * like group desc/block bitmap/inode bitmap. We
2411                          * should find a block in the same group and fix
2412                          * the respective fs metadata pointers. Otherwise
2413                          * fail
2414                          */
2415                         group = ext2fs_group_of_blk2(fs, blk);
2416                         goal = ext2fs_group_first_block2(fs, group);
2417                         meta_data = 1;
2418
2419                 } else {
2420                         goal = new_blk;
2421                 }
2422                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2423                 if (retval)
2424                         goto err_out;
2425
2426                 /* new fs meta data block should be in the same group */
2427                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2428                         retval = ENOSPC;
2429                         goto err_out;
2430                 }
2431
2432                 /* Mark this block as allocated */
2433                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2434
2435                 /* Add it to block move list */
2436                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2437                 if (retval)
2438                         goto err_out;
2439
2440                 bmv->old_loc = blk;
2441                 bmv->new_loc = new_blk;
2442
2443                 list_add(&(bmv->list), &blk_move_list);
2444
2445                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2446                 if (retval)
2447                         goto err_out;
2448
2449                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2450                 if (retval)
2451                         goto err_out;
2452         }
2453
2454 err_out:
2455         ext2fs_free_mem(&buf);
2456         return retval;
2457 }
2458
2459 static blk64_t translate_block(blk64_t blk)
2460 {
2461         struct list_head *entry;
2462         struct blk_move *bmv;
2463
2464         list_for_each(entry, &blk_move_list) {
2465                 bmv = list_entry(entry, struct blk_move, list);
2466                 if (bmv->old_loc == blk)
2467                         return bmv->new_loc;
2468         }
2469
2470         return 0;
2471 }
2472
2473 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2474                          blk64_t *block_nr,
2475                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2476                          blk64_t ref_block EXT2FS_ATTR((unused)),
2477                          int ref_offset EXT2FS_ATTR((unused)),
2478                          void *priv_data)
2479 {
2480         int ret = 0;
2481         blk64_t new_blk;
2482         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2483
2484         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2485                 return 0;
2486         new_blk = translate_block(*block_nr);
2487         if (new_blk) {
2488                 *block_nr = new_blk;
2489                 /*
2490                  * This will force the ext2fs_write_inode in the iterator
2491                  */
2492                 ret |= BLOCK_CHANGED;
2493         }
2494
2495         return ret;
2496 }
2497
2498 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2499 {
2500         errcode_t retval = 0;
2501         ext2_ino_t ino;
2502         blk64_t blk;
2503         char *block_buf = 0;
2504         struct ext2_inode inode;
2505         ext2_inode_scan scan = NULL;
2506
2507         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2508         if (retval)
2509                 return retval;
2510
2511         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2512         if (retval)
2513                 goto err_out;
2514
2515         while (1) {
2516                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2517                 if (retval)
2518                         goto err_out;
2519
2520                 if (!ino)
2521                         break;
2522
2523                 if (inode.i_links_count == 0)
2524                         continue; /* inode not in use */
2525
2526                 /* FIXME!!
2527                  * If we end up modifying the journal inode
2528                  * the sb->s_jnl_blocks will differ. But a
2529                  * subsequent e2fsck fixes that.
2530                  * Do we need to fix this ??
2531                  */
2532
2533                 if (ext2fs_file_acl_block(fs, &inode) &&
2534                     ext2fs_test_block_bitmap2(bmap,
2535                                         ext2fs_file_acl_block(fs, &inode))) {
2536                         blk = translate_block(ext2fs_file_acl_block(fs,
2537                                                                     &inode));
2538                         if (!blk)
2539                                 continue;
2540
2541                         ext2fs_file_acl_block_set(fs, &inode, blk);
2542
2543                         /*
2544                          * Write the inode to disk so that inode table
2545                          * resizing can work
2546                          */
2547                         retval = ext2fs_write_inode(fs, ino, &inode);
2548                         if (retval)
2549                                 goto err_out;
2550                 }
2551
2552                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2553                         continue;
2554
2555                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2556                                                process_block, bmap);
2557                 if (retval)
2558                         goto err_out;
2559
2560         }
2561
2562 err_out:
2563         ext2fs_free_mem(&block_buf);
2564         ext2fs_close_inode_scan(scan);
2565
2566         return retval;
2567 }
2568
2569 /*
2570  * We need to scan for inode and block bitmaps that may need to be
2571  * moved.  This can take place if the filesystem was formatted for
2572  * RAID arrays using the mke2fs's extended option "stride".
2573  */
2574 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2575 {
2576         dgrp_t i;
2577         blk64_t blk, new_blk;
2578
2579         for (i = 0; i < fs->group_desc_count; i++) {
2580                 blk = ext2fs_block_bitmap_loc(fs, i);
2581                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2582                         new_blk = translate_block(blk);
2583                         if (!new_blk)
2584                                 continue;
2585                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2586                 }
2587
2588                 blk = ext2fs_inode_bitmap_loc(fs, i);
2589                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2590                         new_blk = translate_block(blk);
2591                         if (!new_blk)
2592                                 continue;
2593                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2594                 }
2595         }
2596         return 0;
2597 }
2598
2599 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2600 {
2601         dgrp_t i;
2602         blk64_t blk;
2603         errcode_t retval;
2604         int new_ino_blks_per_grp;
2605         unsigned int j;
2606         char *old_itable = NULL, *new_itable = NULL;
2607         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2608         unsigned long old_ino_size;
2609         int old_itable_size, new_itable_size;
2610
2611         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2612         old_ino_size = EXT2_INODE_SIZE(fs->super);
2613
2614         new_ino_blks_per_grp = ext2fs_div_ceil(
2615                                         EXT2_INODES_PER_GROUP(fs->super) *
2616                                         new_ino_size,
2617                                         fs->blocksize);
2618
2619         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2620
2621         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2622         if (retval)
2623                 return retval;
2624
2625         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2626         if (retval)
2627                 goto err_out;
2628
2629         tmp_old_itable = old_itable;
2630         tmp_new_itable = new_itable;
2631
2632         for (i = 0; i < fs->group_desc_count; i++) {
2633                 blk = ext2fs_inode_table_loc(fs, i);
2634                 retval = io_channel_read_blk64(fs->io, blk,
2635                                 fs->inode_blocks_per_group, old_itable);
2636                 if (retval)
2637                         goto err_out;
2638
2639                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2640                         memcpy(new_itable, old_itable, old_ino_size);
2641
2642                         memset(new_itable+old_ino_size, 0,
2643                                         new_ino_size - old_ino_size);
2644
2645                         new_itable += new_ino_size;
2646                         old_itable += old_ino_size;
2647                 }
2648
2649                 /* reset the pointer */
2650                 old_itable = tmp_old_itable;
2651                 new_itable = tmp_new_itable;
2652
2653                 retval = io_channel_write_blk64(fs->io, blk,
2654                                         new_ino_blks_per_grp, new_itable);
2655                 if (retval)
2656                         goto err_out;
2657         }
2658
2659         /* Update the meta data */
2660         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2661         ext2fs_free_inode_cache(fs->icache);
2662         fs->icache = 0;
2663         fs->super->s_inode_size = new_ino_size;
2664
2665 err_out:
2666         if (old_itable)
2667                 ext2fs_free_mem(&old_itable);
2668
2669         if (new_itable)
2670                 ext2fs_free_mem(&new_itable);
2671
2672         return retval;
2673 }
2674
2675
2676 #define list_for_each_safe(pos, pnext, head) \
2677         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2678              pos = pnext, pnext = pos->next)
2679
2680 static void free_blk_move_list(void)
2681 {
2682         struct list_head *entry, *tmp;
2683         struct blk_move *bmv;
2684
2685         list_for_each_safe(entry, tmp, &blk_move_list) {
2686                 bmv = list_entry(entry, struct blk_move, list);
2687                 list_del(entry);
2688                 ext2fs_free_mem(&bmv);
2689         }
2690         return;
2691 }
2692
2693 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2694 {
2695         errcode_t retval;
2696         int new_ino_blks_per_grp;
2697         ext2fs_block_bitmap bmap;
2698
2699         retval = ext2fs_read_inode_bitmap(fs);
2700         if (retval) {
2701                 fputs(_("Failed to read inode bitmap\n"), stderr);
2702                 return retval;
2703         }
2704         retval = ext2fs_read_block_bitmap(fs);
2705         if (retval) {
2706                 fputs(_("Failed to read block bitmap\n"), stderr);
2707                 return retval;
2708         }
2709         INIT_LIST_HEAD(&blk_move_list);
2710
2711
2712         new_ino_blks_per_grp = ext2fs_div_ceil(
2713                                         EXT2_INODES_PER_GROUP(fs->super)*
2714                                         new_size,
2715                                         fs->blocksize);
2716
2717         /* We may change the file system.
2718          * Mark the file system as invalid so that
2719          * the user is prompted to run fsck.
2720          */
2721         fs->super->s_state &= ~EXT2_VALID_FS;
2722
2723         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2724                                                 &bmap);
2725         if (retval) {
2726                 fputs(_("Failed to allocate block bitmap when "
2727                                 "increasing inode size\n"), stderr);
2728                 return retval;
2729         }
2730         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2731         if (retval) {
2732                 fputs(_("Not enough space to increase inode size \n"), stderr);
2733                 goto err_out;
2734         }
2735         retval = move_block(fs, bmap);
2736         if (retval) {
2737                 fputs(_("Failed to relocate blocks during inode resize \n"),
2738                       stderr);
2739                 goto err_out;
2740         }
2741         retval = inode_scan_and_fix(fs, bmap);
2742         if (retval)
2743                 goto err_out_undo;
2744
2745         retval = group_desc_scan_and_fix(fs, bmap);
2746         if (retval)
2747                 goto err_out_undo;
2748
2749         retval = expand_inode_table(fs, new_size);
2750         if (retval)
2751                 goto err_out_undo;
2752
2753         ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2754
2755         fs->super->s_state |= EXT2_VALID_FS;
2756         /* mark super block and block bitmap as dirty */
2757         ext2fs_mark_super_dirty(fs);
2758         ext2fs_mark_bb_dirty(fs);
2759
2760 err_out:
2761         free_blk_move_list();
2762         ext2fs_free_block_bitmap(bmap);
2763
2764         return retval;
2765
2766 err_out_undo:
2767         free_blk_move_list();
2768         ext2fs_free_block_bitmap(bmap);
2769         fputs(_("Error in resizing the inode size.\n"
2770                         "Run e2undo to undo the "
2771                         "file system changes. \n"), stderr);
2772
2773         return retval;
2774 }
2775
2776 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2777 {
2778         errcode_t retval = 0;
2779         const char *tdb_dir;
2780         char *tdb_file = NULL;
2781         char *dev_name, *tmp_name;
2782
2783         /* (re)open a specific undo file */
2784         if (undo_file && undo_file[0] != 0) {
2785                 retval = set_undo_io_backing_manager(*io_ptr);
2786                 if (retval)
2787                         goto err;
2788                 *io_ptr = undo_io_manager;
2789                 retval = set_undo_io_backup_file(undo_file);
2790                 if (retval)
2791                         goto err;
2792                 printf(_("Overwriting existing filesystem; this can be undone "
2793                          "using the command:\n"
2794                          "    e2undo %s %s\n\n"),
2795                          undo_file, name);
2796                 return retval;
2797         }
2798
2799         /*
2800          * Configuration via a conf file would be
2801          * nice
2802          */
2803         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2804         if (!tdb_dir)
2805                 tdb_dir = "/var/lib/e2fsprogs";
2806
2807         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2808             access(tdb_dir, W_OK))
2809                 return 0;
2810
2811         tmp_name = strdup(name);
2812         if (!tmp_name)
2813                 goto errout;
2814         dev_name = basename(tmp_name);
2815         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2816         if (!tdb_file) {
2817                 free(tmp_name);
2818                 goto errout;
2819         }
2820         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2821         free(tmp_name);
2822
2823         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2824                 retval = errno;
2825                 com_err(program_name, retval,
2826                         _("while trying to delete %s"), tdb_file);
2827                 goto errout;
2828         }
2829
2830         retval = set_undo_io_backing_manager(*io_ptr);
2831         if (retval)
2832                 goto errout;
2833         *io_ptr = undo_io_manager;
2834         retval = set_undo_io_backup_file(tdb_file);
2835         if (retval)
2836                 goto errout;
2837         printf(_("Overwriting existing filesystem; this can be undone "
2838                  "using the command:\n"
2839                  "    e2undo %s %s\n\n"),
2840                  tdb_file, name);
2841
2842         free(tdb_file);
2843         return 0;
2844 errout:
2845         free(tdb_file);
2846 err:
2847         com_err("tune2fs", retval, "while trying to setup undo file\n");
2848         return retval;
2849 }
2850
2851 static int
2852 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2853 {
2854         int retval, nr_users, start;
2855         journal_superblock_t *jsb;
2856         ext2_filsys jfs;
2857         __u8 *j_uuid;
2858         char *journal_path;
2859         char uuid[UUID_STR_SIZE];
2860         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2861
2862         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2863                 return 0;
2864
2865         uuid_unparse(sb->s_journal_uuid, uuid);
2866         journal_path = blkid_get_devname(NULL, "UUID", uuid);
2867         if (!journal_path)
2868                 return 0;
2869
2870         retval = ext2fs_open2(journal_path, io_options,
2871                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2872                               0, 0, unix_io_manager, &jfs);
2873         if (retval) {
2874                 com_err(program_name, retval,
2875                         _("while trying to open %s"),
2876                         journal_path);
2877                 return retval;
2878         }
2879
2880         retval = get_journal_sb(jfs, buf);
2881         if (retval != 0) {
2882                 if (retval == EXT2_ET_UNSUPP_FEATURE)
2883                         fprintf(stderr, _("%s is not a journal device.\n"),
2884                                 journal_path);
2885                 return retval;
2886         }
2887
2888         jsb = (journal_superblock_t *) buf;
2889         /* Find the filesystem UUID */
2890         nr_users = ntohl(jsb->s_nr_users);
2891         if (nr_users > JBD2_USERS_MAX) {
2892                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2893                                  "is too high (%d).\n"), nr_users);
2894                 return EXT2_ET_CORRUPT_JOURNAL_SB;
2895         }
2896
2897         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2898         if (j_uuid == NULL) {
2899                 fputs(_("Filesystem's UUID not found on journal device.\n"),
2900                       stderr);
2901                 return EXT2_ET_LOAD_EXT_JOURNAL;
2902         }
2903
2904         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2905
2906         start = ext2fs_journal_sb_start(jfs->blocksize);
2907         /* Write back the journal superblock */
2908         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2909         if (retval != 0) {
2910                 com_err(program_name, retval,
2911                         "while writing journal superblock.");
2912                 return retval;
2913         }
2914
2915         ext2fs_close(jfs);
2916
2917         return 0;
2918 }
2919
2920 #ifndef BUILD_AS_LIB
2921 int main(int argc, char **argv)
2922 #else
2923 int tune2fs_main(int argc, char **argv)
2924 #endif  /* BUILD_AS_LIB */
2925 {
2926         errcode_t retval;
2927         ext2_filsys fs;
2928         struct ext2_super_block *sb;
2929         io_manager io_ptr, io_ptr_orig = NULL;
2930         int rc = 0;
2931         char default_undo_file[1] = { 0 };
2932
2933 #ifdef ENABLE_NLS
2934         setlocale(LC_MESSAGES, "");
2935         setlocale(LC_CTYPE, "");
2936         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2937         textdomain(NLS_CAT_NAME);
2938         set_com_err_gettext(gettext);
2939 #endif
2940         if (argc && *argv)
2941                 program_name = *argv;
2942         add_error_table(&et_ext2_error_table);
2943
2944 #ifdef CONFIG_BUILD_FINDFS
2945         if (strcmp(get_progname(argv[0]), "findfs") == 0)
2946                 do_findfs(argc, argv);
2947 #endif
2948         if (strcmp(get_progname(argv[0]), "e2label") == 0)
2949                 parse_e2label_options(argc, argv);
2950         else
2951                 parse_tune2fs_options(argc, argv);
2952
2953 #ifdef CONFIG_TESTIO_DEBUG
2954         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2955                 io_ptr = test_io_manager;
2956                 test_io_backing_manager = unix_io_manager;
2957         } else
2958 #endif
2959                 io_ptr = unix_io_manager;
2960
2961 retry_open:
2962         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2963                 open_flag |= EXT2_FLAG_SKIP_MMP;
2964
2965         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
2966                 EXT2_FLAG_JOURNAL_DEV_OK;
2967
2968         /* keep the filesystem struct around to dump MMP data */
2969         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2970
2971         retval = ext2fs_open2(device_name, io_options, open_flag,
2972                               0, 0, io_ptr, &fs);
2973         if (retval) {
2974                 com_err(program_name, retval,
2975                         _("while trying to open %s"),
2976                         device_name);
2977                 if (retval == EXT2_ET_MMP_FSCK_ON ||
2978                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2979                         dump_mmp_msg(fs->mmp_buf,
2980                                      _("If you are sure the filesystem "
2981                                        "is not in use on any node, run:\n"
2982                                        "'tune2fs -f -E clear_mmp {device}'\n"));
2983                 else if (retval == EXT2_ET_MMP_FAILED)
2984                         dump_mmp_msg(fs->mmp_buf, NULL);
2985                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2986                         fprintf(stderr,
2987                                 _("MMP block magic is bad. Try to fix it by "
2988                                   "running:\n'e2fsck -f %s'\n"), device_name);
2989                 else if (retval == EXT2_ET_BAD_MAGIC)
2990                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2991                 else if (retval != EXT2_ET_MMP_FAILED)
2992                         fprintf(stderr, "%s",
2993                              _("Couldn't find valid filesystem superblock.\n"));
2994
2995                 ext2fs_free(fs);
2996                 exit(1);
2997         }
2998         if (ext2fs_has_feature_journal_dev(fs->super)) {
2999                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
3000                 ext2fs_free(fs);
3001                 exit(1);
3002         }
3003         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
3004
3005         if (I_flag) {
3006                 /*
3007                  * Check the inode size is right so we can issue an
3008                  * error message and bail before setting up the tdb
3009                  * file.
3010                  */
3011                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3012                         fprintf(stderr, _("The inode size is already %lu\n"),
3013                                 new_inode_size);
3014                         rc = 1;
3015                         goto closefs;
3016                 }
3017                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3018                         fprintf(stderr, "%s",
3019                                 _("Shrinking inode size is not supported\n"));
3020                         rc = 1;
3021                         goto closefs;
3022                 }
3023                 if (new_inode_size > fs->blocksize) {
3024                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3025                                 new_inode_size, fs->blocksize);
3026                         rc = 1;
3027                         goto closefs;
3028                 }
3029                 rc = check_fsck_needed(fs,
3030                         _("Resizing inodes could take some time."));
3031                 if (rc)
3032                         goto closefs;
3033                 /*
3034                  * If inode resize is requested use the
3035                  * Undo I/O manager
3036                  */
3037                 undo_file = default_undo_file;
3038         }
3039
3040         /* Set up an undo file */
3041         if (undo_file && io_ptr_orig == NULL) {
3042                 io_ptr_orig = io_ptr;
3043                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3044                 if (retval) {
3045                         rc = 1;
3046                         goto closefs;
3047                 }
3048                 if (io_ptr != io_ptr_orig) {
3049                         ext2fs_close_free(&fs);
3050                         goto retry_open;
3051                 }
3052         }
3053
3054         sb = fs->super;
3055         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3056
3057         if (print_label) {
3058                 /* For e2label emulation */
3059                 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3060                 remove_error_table(&et_ext2_error_table);
3061                 goto closefs;
3062         }
3063
3064         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3065         if (retval) {
3066                 com_err("ext2fs_check_if_mount", retval,
3067                         _("while determining whether %s is mounted."),
3068                         device_name);
3069                 rc = 1;
3070                 goto closefs;
3071         }
3072
3073 #ifdef NO_RECOVERY
3074         /* Warn if file system needs recovery and it is opened for writing. */
3075         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3076             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3077             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3078                 fprintf(stderr,
3079 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3080   "\te2fsck -E journal_only %s\n\n"
3081   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3082   "by journal recovery.\n"), device_name);
3083         }
3084 #else
3085         /* Recover the journal if possible. */
3086         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3087             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3088                 printf(_("Recovering journal.\n"));
3089                 retval = ext2fs_run_ext3_journal(&fs);
3090                 if (retval) {
3091                         com_err("tune2fs", retval,
3092                                 "while recovering journal.\n");
3093                         printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3094                         if (fs)
3095                                 ext2fs_close_free(&fs);
3096                         rc = 1;
3097                         goto closefs;
3098                 }
3099                 sb = fs->super;
3100         }
3101 #endif
3102
3103         /* Normally we only need to write out the superblock */
3104         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3105
3106         if (c_flag) {
3107                 sb->s_max_mnt_count = max_mount_count;
3108                 ext2fs_mark_super_dirty(fs);
3109                 printf(_("Setting maximal mount count to %d\n"),
3110                        max_mount_count);
3111         }
3112         if (C_flag) {
3113                 sb->s_mnt_count = mount_count;
3114                 ext2fs_mark_super_dirty(fs);
3115                 printf(_("Setting current mount count to %d\n"), mount_count);
3116         }
3117         if (e_flag) {
3118                 sb->s_errors = errors;
3119                 ext2fs_mark_super_dirty(fs);
3120                 printf(_("Setting error behavior to %d\n"), errors);
3121         }
3122         if (g_flag) {
3123                 sb->s_def_resgid = resgid;
3124                 ext2fs_mark_super_dirty(fs);
3125                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3126         }
3127         if (i_flag) {
3128                 if ((unsigned long long)interval >= (1ULL << 32)) {
3129                         com_err(program_name, 0,
3130                                 _("interval between checks is too big (%lu)"),
3131                                 interval);
3132                         rc = 1;
3133                         goto closefs;
3134                 }
3135                 sb->s_checkinterval = interval;
3136                 ext2fs_mark_super_dirty(fs);
3137                 printf(_("Setting interval between checks to %lu seconds\n"),
3138                        interval);
3139         }
3140         if (m_flag) {
3141                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3142                                           ext2fs_blocks_count(sb) / 100.0);
3143                 ext2fs_mark_super_dirty(fs);
3144                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3145                         reserved_ratio, ext2fs_r_blocks_count(sb));
3146         }
3147         if (r_flag) {
3148                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3149                         com_err(program_name, 0,
3150                                 _("reserved blocks count is too big (%llu)"),
3151                                 reserved_blocks);
3152                         rc = 1;
3153                         goto closefs;
3154                 }
3155                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3156                 ext2fs_mark_super_dirty(fs);
3157                 printf(_("Setting reserved blocks count to %llu\n"),
3158                        reserved_blocks);
3159         }
3160         if (s_flag == 1) {
3161                 if (ext2fs_has_feature_sparse_super(sb)) {
3162                         fputs(_("\nThe filesystem already has sparse "
3163                                 "superblocks.\n"), stderr);
3164                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3165                         fputs(_("\nSetting the sparse superblock flag not "
3166                                 "supported\nfor filesystems with "
3167                                 "the meta_bg feature enabled.\n"),
3168                                 stderr);
3169                         rc = 1;
3170                         goto closefs;
3171                 } else {
3172                         ext2fs_set_feature_sparse_super(sb);
3173                         sb->s_state &= ~EXT2_VALID_FS;
3174                         ext2fs_mark_super_dirty(fs);
3175                         printf(_("\nSparse superblock flag set.  %s"),
3176                                _(please_fsck));
3177                 }
3178         }
3179         if (s_flag == 0) {
3180                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3181                       stderr);
3182                 rc = 1;
3183                 goto closefs;
3184         }
3185         if (T_flag) {
3186                 sb->s_lastcheck = last_check_time;
3187                 ext2fs_mark_super_dirty(fs);
3188                 printf(_("Setting time filesystem last checked to %s\n"),
3189                        ctime(&last_check_time));
3190         }
3191         if (u_flag) {
3192                 sb->s_def_resuid = resuid;
3193                 ext2fs_mark_super_dirty(fs);
3194                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3195         }
3196         if (L_flag) {
3197                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3198                         fputs(_("Warning: label too long, truncating.\n"),
3199                               stderr);
3200                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3201                 strncpy((char *)sb->s_volume_name, new_label,
3202                         sizeof(sb->s_volume_name));
3203                 ext2fs_mark_super_dirty(fs);
3204         }
3205         if (M_flag) {
3206                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3207                 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3208                         sizeof(sb->s_last_mounted));
3209                 ext2fs_mark_super_dirty(fs);
3210         }
3211         if (mntopts_cmd) {
3212                 rc = update_mntopts(fs, mntopts_cmd);
3213                 if (rc)
3214                         goto closefs;
3215         }
3216         if (features_cmd) {
3217                 rc = update_feature_set(fs, features_cmd);
3218                 if (rc)
3219                         goto closefs;
3220         }
3221         if (extended_cmd) {
3222                 rc = parse_extended_opts(fs, extended_cmd);
3223                 if (rc)
3224                         goto closefs;
3225                 if (clear_mmp && !f_flag) {
3226                         fputs(_("Error in using clear_mmp. "
3227                                 "It must be used with -f\n"),
3228                               stderr);
3229                         goto closefs;
3230                 }
3231         }
3232         if (clear_mmp) {
3233                 rc = ext2fs_mmp_clear(fs);
3234                 goto closefs;
3235         }
3236         if (journal_size || journal_device) {
3237                 rc = add_journal(fs);
3238                 if (rc)
3239                         goto closefs;
3240         }
3241
3242         if (Q_flag) {
3243                 if (mount_flags & EXT2_MF_MOUNTED) {
3244                         fputs(_("The quota feature may only be changed when "
3245                                 "the filesystem is unmounted.\n"), stderr);
3246                         rc = 1;
3247                         goto closefs;
3248                 }
3249                 rc = handle_quota_options(fs);
3250                 if (rc)
3251                         goto closefs;
3252         }
3253
3254         if (U_flag) {
3255                 int set_csum = 0;
3256                 dgrp_t i;
3257                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3258                 __u8 old_uuid[UUID_SIZE];
3259
3260                 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3261                         fputs(_("Cannot change the UUID of this filesystem "
3262                                 "because it has the stable_inodes feature "
3263                                 "flag.\n"), stderr);
3264                         exit(1);
3265                 }
3266
3267                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3268                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3269                      ext2fs_has_feature_ea_inode(fs->super))) {
3270                         rc = check_fsck_needed(fs,
3271                                 _("Setting the UUID on this "
3272                                   "filesystem could take some time."));
3273                         if (rc)
3274                                 goto closefs;
3275                         rewrite_checksums = REWRITE_ALL;
3276                 }
3277
3278                 if (ext2fs_has_group_desc_csum(fs)) {
3279                         /*
3280                          * Changing the UUID on a metadata_csum FS requires
3281                          * rewriting all metadata, which can race with a
3282                          * mounted fs.  Don't allow that unless we're saving
3283                          * the checksum seed.
3284                          */
3285                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3286                             !ext2fs_has_feature_csum_seed(fs->super) &&
3287                             ext2fs_has_feature_metadata_csum(fs->super)) {
3288                                 fputs(_("The UUID may only be "
3289                                         "changed when the filesystem is "
3290                                         "unmounted.\n"), stderr);
3291                                 fputs(_("If you only use kernels newer than "
3292                                         "v4.4, run 'tune2fs -O "
3293                                         "metadata_csum_seed' and re-run this "
3294                                         "command.\n"), stderr);
3295                                 try_confirm_csum_seed_support();
3296                                 rc = 1;
3297                                 goto closefs;
3298                         }
3299
3300                         /*
3301                          * Determine if the block group checksums are
3302                          * correct so we know whether or not to set
3303                          * them later on.
3304                          */
3305                         for (i = 0; i < fs->group_desc_count; i++)
3306                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3307                                         break;
3308                         if (i >= fs->group_desc_count)
3309                                 set_csum = 1;
3310                 }
3311
3312                 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3313                 if ((strcasecmp(new_UUID, "null") == 0) ||
3314                     (strcasecmp(new_UUID, "clear") == 0)) {
3315                         uuid_clear(sb->s_uuid);
3316                 } else if (strcasecmp(new_UUID, "time") == 0) {
3317                         uuid_generate_time(sb->s_uuid);
3318                 } else if (strcasecmp(new_UUID, "random") == 0) {
3319                         uuid_generate(sb->s_uuid);
3320                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3321                         com_err(program_name, 0, "%s",
3322                                 _("Invalid UUID format\n"));
3323                         rc = 1;
3324                         goto closefs;
3325                 }
3326                 ext2fs_init_csum_seed(fs);
3327                 if (set_csum) {
3328                         for (i = 0; i < fs->group_desc_count; i++)
3329                                 ext2fs_group_desc_csum_set(fs, i);
3330                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3331                 }
3332
3333                 /* If this is a journal dev, we need to copy UUID into jsb */
3334                 if (!(rc = get_journal_sb(fs, buf))) {
3335                         journal_superblock_t *jsb;
3336
3337                         jsb = (journal_superblock_t *) buf;
3338                         fputs(_("Need to update journal superblock.\n"), stdout);
3339                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3340
3341                         /* Writeback the journal superblock */
3342                         if ((rc = io_channel_write_blk64(fs->io,
3343                                 ext2fs_journal_sb_start(fs->blocksize),
3344                                         -SUPERBLOCK_SIZE, buf)))
3345                                 goto closefs;
3346                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3347                         goto closefs;
3348                 else {
3349                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3350
3351                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3352                                 goto closefs;
3353                 }
3354
3355                 ext2fs_mark_super_dirty(fs);
3356         }
3357
3358         if (I_flag) {
3359                 if (mount_flags & EXT2_MF_MOUNTED) {
3360                         fputs(_("The inode size may only be "
3361                                 "changed when the filesystem is "
3362                                 "unmounted.\n"), stderr);
3363                         rc = 1;
3364                         goto closefs;
3365                 }
3366                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3367                         fputs(_("Changing the inode size not supported for "
3368                                 "filesystems with the flex_bg\n"
3369                                 "feature enabled.\n"),
3370                               stderr);
3371                         rc = 1;
3372                         goto closefs;
3373                 }
3374                 /*
3375                  * We want to update group descriptor also
3376                  * with the new free inode count
3377                  */
3378                 if (rewrite_checksums)
3379                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3380                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3381                 retval = resize_inode(fs, new_inode_size);
3382                 if (rewrite_checksums)
3383                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3384                 if (retval == 0) {
3385                         printf(_("Setting inode size %lu\n"),
3386                                                         new_inode_size);
3387                         rewrite_checksums = REWRITE_ALL;
3388                 } else {
3389                         printf("%s", _("Failed to change inode size\n"));
3390                         rc = 1;
3391                         goto closefs;
3392                 }
3393         }
3394
3395         if (rewrite_checksums)
3396                 rewrite_metadata_checksums(fs, rewrite_checksums);
3397
3398         if (l_flag)
3399                 list_super(sb);
3400         if (stride_set) {
3401                 sb->s_raid_stride = stride;
3402                 ext2fs_mark_super_dirty(fs);
3403                 printf(_("Setting stride size to %d\n"), stride);
3404         }
3405         if (stripe_width_set) {
3406                 sb->s_raid_stripe_width = stripe_width;
3407                 ext2fs_mark_super_dirty(fs);
3408                 printf(_("Setting stripe width to %d\n"), stripe_width);
3409         }
3410         if (ext_mount_opts) {
3411                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3412                         sizeof(fs->super->s_mount_opts));
3413                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3414                 ext2fs_mark_super_dirty(fs);
3415                 printf(_("Setting extended default mount options to '%s'\n"),
3416                        ext_mount_opts);
3417                 free(ext_mount_opts);
3418         }
3419
3420         free(device_name);
3421         remove_error_table(&et_ext2_error_table);
3422
3423 closefs:
3424         if (rc) {
3425                 ext2fs_mmp_stop(fs);
3426 #ifndef BUILD_AS_LIB
3427                 exit(1);
3428 #endif
3429         }
3430
3431         if (feature_64bit)
3432                 convert_64bit(fs, feature_64bit);
3433         return (ext2fs_close_free(&fs) ? 1 : 0);
3434 }