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 #endif
  48 #include <string.h>
  49 #include <time.h>
  50 #include <unistd.h>
  51 #include <sys/types.h>
  52 #include <libgen.h>
  53 #include <limits.h>
  54
  55 #include "ext2fs/ext2_fs.h"
  56 #include "ext2fs/ext2fs.h"
  57 #include "et/com_err.h"
  58 #include "uuid/uuid.h"
  59 #include "e2p/e2p.h"
  60 #include "jfs_user.h"
  61 #include "util.h"
  62 #include "blkid/blkid.h"
  63 #include "quota/mkquota.h"
  64
  65 #include "../version.h"
  66 #include "nls-enable.h"
  67
  68 #define QOPT_ENABLE     (1)
  69 #define QOPT_DISABLE    (-1)
  70
  71 extern int ask_yn(const char *string, int def);
  72
  73 const char *program_name = "tune2fs";
  74 char *device_name;
  75 char *new_label, *new_last_mounted, *new_UUID;
  76 char *io_options;
  77 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  78 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  79 static int I_flag;
  80 static int clear_mmp;
  81 static time_t last_check_time;
  82 static int print_label;
  83 static int max_mount_count, mount_count, mount_flags;
  84 static unsigned long interval;
  85 static blk64_t reserved_blocks;
  86 static double reserved_ratio;
  87 static unsigned long resgid, resuid;
  88 static unsigned short errors;
  89 static int open_flag;
  90 static char *features_cmd;
  91 static char *mntopts_cmd;
  92 static int stride, stripe_width;
  93 static int stride_set, stripe_width_set;
  94 static char *extended_cmd;
  95 static unsigned long new_inode_size;
  96 static char *ext_mount_opts;
  97 static int usrquota, grpquota;
  98
  99 int journal_size, journal_flags;
 100 char *journal_device;
 101
 102 static struct list_head blk_move_list;
 103
 104 struct blk_move {
 105         struct list_head list;
 106         blk64_t old_loc;
 107         blk64_t new_loc;
 108 };
 109
 110
 111 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 112
 113 #ifdef CONFIG_BUILD_FINDFS
 114 void do_findfs(int argc, char **argv);
 115 #endif
 116
 117 static void usage(void)
 118 {
 119         fprintf(stderr,
 120                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 121                   "[-g group]\n"
 122                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 123                   "\t[-m reserved_blocks_percent] "
 124                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 125                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 126                   "[-L volume_label]\n"
 127                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 128 #ifdef CONFIG_QUOTA
 129                   "\t[-Q quota_options]\n"
 130 #endif
 131                   "\t[-E extended-option[,...]] [-T last_check_time] "
 132                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 133         exit(1);
 134 }
 135
 136 static __u32 ok_features[3] = {
 137         /* Compat */
 138         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 139                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 140         /* Incompat */
 141         EXT2_FEATURE_INCOMPAT_FILETYPE |
 142                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 143                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 144                 EXT4_FEATURE_INCOMPAT_MMP,
 145         /* R/O compat */
 146         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 147                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 148                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 149                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 150                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 151 #ifdef CONFIG_QUOTA
 152                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 153 #endif
 154                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 155 };
 156
 157 static __u32 clear_ok_features[3] = {
 158         /* Compat */
 159         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 160                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 161                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 162         /* Incompat */
 163         EXT2_FEATURE_INCOMPAT_FILETYPE |
 164                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 165                 EXT4_FEATURE_INCOMPAT_MMP,
 166         /* R/O compat */
 167         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 168                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 169                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 170                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 171 #ifdef CONFIG_QUOTA
 172                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 173 #endif
 174                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 175 };
 176
 177 /*
 178  * Remove an external journal from the filesystem
 179  */
 180 static int remove_journal_device(ext2_filsys fs)
 181 {
 182         char            *journal_path;
 183         ext2_filsys     jfs;
 184         char            buf[1024];
 185         journal_superblock_t    *jsb;
 186         int             i, nr_users;
 187         errcode_t       retval;
 188         int             commit_remove_journal = 0;
 189         io_manager      io_ptr;
 190
 191         if (f_flag)
 192                 commit_remove_journal = 1; /* force removal even if error */
 193
 194         uuid_unparse(fs->super->s_journal_uuid, buf);
 195         journal_path = blkid_get_devname(NULL, "UUID", buf);
 196
 197         if (!journal_path) {
 198                 journal_path =
 199                         ext2fs_find_block_device(fs->super->s_journal_dev);
 200                 if (!journal_path)
 201                         goto no_valid_journal;
 202         }
 203
 204 #ifdef CONFIG_TESTIO_DEBUG
 205         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 206                 io_ptr = test_io_manager;
 207                 test_io_backing_manager = unix_io_manager;
 208         } else
 209 #endif
 210                 io_ptr = unix_io_manager;
 211         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 212                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 213                              fs->blocksize, io_ptr, &jfs);
 214         if (retval) {
 215                 com_err(program_name, retval, "%s",
 216                         _("while trying to open external journal"));
 217                 goto no_valid_journal;
 218         }
 219         if (!(jfs->super->s_feature_incompat &
 220               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 221                 fprintf(stderr, _("%s is not a journal device.\n"),
 222                         journal_path);
 223                 goto no_valid_journal;
 224         }
 225
 226         /* Get the journal superblock */
 227         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 228                 com_err(program_name, retval, "%s",
 229                         _("while reading journal superblock"));
 230                 goto no_valid_journal;
 231         }
 232
 233         jsb = (journal_superblock_t *) buf;
 234         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 235             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 236                 fputs(_("Journal superblock not found!\n"), stderr);
 237                 goto no_valid_journal;
 238         }
 239
 240         /* Find the filesystem UUID */
 241         nr_users = ntohl(jsb->s_nr_users);
 242         for (i = 0; i < nr_users; i++) {
 243                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 244                         break;
 245         }
 246         if (i >= nr_users) {
 247                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 248                       stderr);
 249                 commit_remove_journal = 1;
 250                 goto no_valid_journal;
 251         }
 252         nr_users--;
 253         for (i = 0; i < nr_users; i++)
 254                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 255         jsb->s_nr_users = htonl(nr_users);
 256
 257         /* Write back the journal superblock */
 258         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 259                 com_err(program_name, retval,
 260                         "while writing journal superblock.");
 261                 goto no_valid_journal;
 262         }
 263
 264         commit_remove_journal = 1;
 265
 266 no_valid_journal:
 267         if (commit_remove_journal == 0) {
 268                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 269                         "Use -f option to remove missing journal device.\n"),
 270                       stderr);
 271                 return 1;
 272         }
 273         fs->super->s_journal_dev = 0;
 274         uuid_clear(fs->super->s_journal_uuid);
 275         ext2fs_mark_super_dirty(fs);
 276         fputs(_("Journal removed\n"), stdout);
 277         free(journal_path);
 278
 279         return 0;
 280 }
 281
 282 /* Helper function for remove_journal_inode */
 283 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 284                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 285                                blk64_t ref_block EXT2FS_ATTR((unused)),
 286                                int ref_offset EXT2FS_ATTR((unused)),
 287                                void *private EXT2FS_ATTR((unused)))
 288 {
 289         blk64_t block;
 290         int     group;
 291
 292         block = *blocknr;
 293         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 294         group = ext2fs_group_of_blk2(fs, block);
 295         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 296         ext2fs_group_desc_csum_set(fs, group);
 297         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 298         return 0;
 299 }
 300
 301 /*
 302  * Remove the journal inode from the filesystem
 303  */
 304 static errcode_t remove_journal_inode(ext2_filsys fs)
 305 {
 306         struct ext2_inode       inode;
 307         errcode_t               retval;
 308         ino_t                   ino = fs->super->s_journal_inum;
 309
 310         retval = ext2fs_read_inode(fs, ino,  &inode);
 311         if (retval) {
 312                 com_err(program_name, retval, "%s",
 313                         _("while reading journal inode"));
 314                 return retval;
 315         }
 316         if (ino == EXT2_JOURNAL_INO) {
 317                 retval = ext2fs_read_bitmaps(fs);
 318                 if (retval) {
 319                         com_err(program_name, retval, "%s",
 320                                 _("while reading bitmaps"));
 321                         return retval;
 322                 }
 323                 retval = ext2fs_block_iterate3(fs, ino,
 324                                                BLOCK_FLAG_READ_ONLY, NULL,
 325                                                release_blocks_proc, NULL);
 326                 if (retval) {
 327                         com_err(program_name, retval, "%s",
 328                                 _("while clearing journal inode"));
 329                         return retval;
 330                 }
 331                 memset(&inode, 0, sizeof(inode));
 332                 ext2fs_mark_bb_dirty(fs);
 333                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 334         } else
 335                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 336         retval = ext2fs_write_inode(fs, ino, &inode);
 337         if (retval) {
 338                 com_err(program_name, retval, "%s",
 339                         _("while writing journal inode"));
 340                 return retval;
 341         }
 342         fs->super->s_journal_inum = 0;
 343         ext2fs_mark_super_dirty(fs);
 344
 345         return 0;
 346 }
 347
 348 /*
 349  * Update the default mount options
 350  */
 351 static int update_mntopts(ext2_filsys fs, char *mntopts)
 352 {
 353         struct ext2_super_block *sb = fs->super;
 354
 355         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 356                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 357                         mntopts);
 358                 return 1;
 359         }
 360         ext2fs_mark_super_dirty(fs);
 361
 362         return 0;
 363 }
 364
 365 static int check_fsck_needed(ext2_filsys fs)
 366 {
 367         if (fs->super->s_state & EXT2_VALID_FS)
 368                 return 0;
 369         printf("\n%s\n", _(please_fsck));
 370         if (mount_flags & EXT2_MF_READONLY)
 371                 printf(_("(and reboot afterwards!)\n"));
 372         return 1;
 373 }
 374
 375 static void request_fsck_afterwards(ext2_filsys fs)
 376 {
 377         static int requested = 0;
 378
 379         if (requested++)
 380                 return;
 381         fs->super->s_state &= ~EXT2_VALID_FS;
 382         printf("\n%s\n", _(please_fsck));
 383         if (mount_flags & EXT2_MF_READONLY)
 384                 printf("%s", _("(and reboot afterwards!)\n"));
 385 }
 386
 387 /*
 388  * Update the feature set as provided by the user.
 389  */
 390 static int update_feature_set(ext2_filsys fs, char *features)
 391 {
 392         struct ext2_super_block *sb = fs->super;
 393         struct ext2_group_desc *gd;
 394         __u32           old_features[3];
 395         dgrp_t          i;
 396         int             type_err;
 397         unsigned int    mask_err;
 398
 399 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 400                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 401 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 402                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 403 #define FEATURE_CHANGED(type, mask) ((mask) & \
 404                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 405
 406         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 407         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 408         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 409
 410         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 411                               ok_features, clear_ok_features,
 412                               &type_err, &mask_err)) {
 413                 if (!mask_err)
 414                         fprintf(stderr,
 415                                 _("Invalid filesystem option set: %s\n"),
 416                                 features);
 417                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 418                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 419                                           "not supported.\n"),
 420                                 e2p_feature2string(type_err &
 421                                                    E2P_FEATURE_TYPE_MASK,
 422                                                    mask_err));
 423                 else
 424                         fprintf(stderr, _("Setting filesystem feature '%s' "
 425                                           "not supported.\n"),
 426                                 e2p_feature2string(type_err, mask_err));
 427                 return 1;
 428         }
 429
 430         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 431                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 432                     !(mount_flags & EXT2_MF_READONLY)) {
 433                         fputs(_("The has_journal feature may only be "
 434                                 "cleared when the filesystem is\n"
 435                                 "unmounted or mounted "
 436                                 "read-only.\n"), stderr);
 437                         return 1;
 438                 }
 439                 if (sb->s_feature_incompat &
 440                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 441                         fputs(_("The needs_recovery flag is set.  "
 442                                 "Please run e2fsck before clearing\n"
 443                                 "the has_journal flag.\n"), stderr);
 444                         return 1;
 445                 }
 446                 if (sb->s_journal_inum) {
 447                         if (remove_journal_inode(fs))
 448                                 return 1;
 449                 }
 450                 if (sb->s_journal_dev) {
 451                         if (remove_journal_device(fs))
 452                                 return 1;
 453                 }
 454         }
 455         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 456                 int error;
 457
 458                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 459                     (mount_flags & EXT2_MF_READONLY)) {
 460                         fputs(_("The multiple mount protection feature can't\n"
 461                                 "be set if the filesystem is mounted or\n"
 462                                 "read-only.\n"), stderr);
 463                         return 1;
 464                 }
 465
 466                 error = ext2fs_mmp_init(fs);
 467                 if (error) {
 468                         fputs(_("\nError while enabling multiple mount "
 469                                 "protection feature."), stderr);
 470                         return 1;
 471                 }
 472
 473                 /*
 474                  * We want to update group desc with the new free blocks count
 475                  */
 476                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 477
 478                 printf(_("Multiple mount protection has been enabled "
 479                          "with update interval %ds.\n"),
 480                        sb->s_mmp_update_interval);
 481         }
 482
 483         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 484                 int error;
 485
 486                 if (mount_flags & EXT2_MF_READONLY) {
 487                         fputs(_("The multiple mount protection feature cannot\n"
 488                                 "be disabled if the filesystem is readonly.\n"),
 489                                 stderr);
 490                         return 1;
 491                 }
 492
 493                 error = ext2fs_read_bitmaps(fs);
 494                 if (error) {
 495                         fputs(_("Error while reading bitmaps\n"), stderr);
 496                         return 1;
 497                 }
 498
 499                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 500                 if (error) {
 501                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 502
 503                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 504                                 printf(_("Magic number in MMP block does not "
 505                                          "match. expected: %x, actual: %x\n"),
 506                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 507                         else
 508                                 com_err(program_name, error, "%s",
 509                                         _("while reading MMP block."));
 510                         goto mmp_error;
 511                 }
 512
 513                 /* We need to force out the group descriptors as well */
 514                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 515                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
 516 mmp_error:
 517                 sb->s_mmp_block = 0;
 518                 sb->s_mmp_update_interval = 0;
 519         }
 520
 521         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 522                 /*
 523                  * If adding a journal flag, let the create journal
 524                  * code below handle setting the flag and creating the
 525                  * journal.  We supply a default size if necessary.
 526                  */
 527                 if (!journal_size)
 528                         journal_size = -1;
 529                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 530         }
 531
 532         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 533                 if (!sb->s_def_hash_version)
 534                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 535                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 536                         uuid_generate((unsigned char *) sb->s_hash_seed);
 537         }
 538
 539         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 540                 if (ext2fs_check_desc(fs)) {
 541                         fputs(_("Clearing the flex_bg flag would "
 542                                 "cause the the filesystem to be\n"
 543                                 "inconsistent.\n"), stderr);
 544                         return 1;
 545                 }
 546         }
 547
 548         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 549                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 550                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 551                     !(mount_flags & EXT2_MF_READONLY)) {
 552                         fputs(_("The huge_file feature may only be "
 553                                 "cleared when the filesystem is\n"
 554                                 "unmounted or mounted "
 555                                 "read-only.\n"), stderr);
 556                         return 1;
 557                 }
 558         }
 559
 560         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 561                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 562                 for (i = 0; i < fs->group_desc_count; i++) {
 563                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 564                         gd->bg_itable_unused = 0;
 565                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 566                         ext2fs_group_desc_csum_set(fs, i);
 567                 }
 568                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 569         }
 570
 571         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 572                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 573                 for (i = 0; i < fs->group_desc_count; i++) {
 574                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 575                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 576                                 /*
 577                                  * XXX what we really should do is zap
 578                                  * uninitialized inode tables instead.
 579                                  */
 580                                 request_fsck_afterwards(fs);
 581                                 break;
 582                         }
 583                         gd->bg_itable_unused = 0;
 584                         gd->bg_flags = 0;
 585                         gd->bg_checksum = 0;
 586                 }
 587                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 588         }
 589
 590         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 591                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 592                 /*
 593                  * Set the Q_flag here and handle the quota options in the code
 594                  * below.
 595                  */
 596                 if (!Q_flag) {
 597                         Q_flag = 1;
 598                         /* Enable both user quota and group quota by default */
 599                         usrquota = QOPT_ENABLE;
 600                         grpquota = QOPT_ENABLE;
 601                 }
 602                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 603         }
 604
 605         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 606                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 607                 /*
 608                  * Set the Q_flag here and handle the quota options in the code
 609                  * below.
 610                  */
 611                 if (Q_flag)
 612                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 613                                 "arguments.\n"), stderr);
 614                 Q_flag = 1;
 615                 /* Disable both user quota and group quota by default */
 616                 usrquota = QOPT_DISABLE;
 617                 grpquota = QOPT_DISABLE;
 618         }
 619
 620         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 621             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 622              sb->s_feature_incompat))
 623                 ext2fs_update_dynamic_rev(fs);
 624
 625         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 626                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 627             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 628                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 629             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 630                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 631             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 632                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 633             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 634                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 635                 request_fsck_afterwards(fs);
 636
 637         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 638             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 639             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 640                 ext2fs_mark_super_dirty(fs);
 641
 642         return 0;
 643 }
 644
 645 /*
 646  * Add a journal to the filesystem.
 647  */
 648 static int add_journal(ext2_filsys fs)
 649 {
 650         unsigned long journal_blocks;
 651         errcode_t       retval;
 652         ext2_filsys     jfs;
 653         io_manager      io_ptr;
 654
 655         if (fs->super->s_feature_compat &
 656             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 657                 fputs(_("The filesystem already has a journal.\n"), stderr);
 658                 goto err;
 659         }
 660         if (journal_device) {
 661                 check_plausibility(journal_device);
 662                 check_mount(journal_device, 0, _("journal"));
 663 #ifdef CONFIG_TESTIO_DEBUG
 664                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 665                         io_ptr = test_io_manager;
 666                         test_io_backing_manager = unix_io_manager;
 667                 } else
 668 #endif
 669                         io_ptr = unix_io_manager;
 670                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 671                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 672                                      fs->blocksize, io_ptr, &jfs);
 673                 if (retval) {
 674                         com_err(program_name, retval,
 675                                 _("\n\twhile trying to open journal on %s\n"),
 676                                 journal_device);
 677                         goto err;
 678                 }
 679                 printf(_("Creating journal on device %s: "),
 680                        journal_device);
 681                 fflush(stdout);
 682
 683                 retval = ext2fs_add_journal_device(fs, jfs);
 684                 ext2fs_close(jfs);
 685                 if (retval) {
 686                         com_err(program_name, retval,
 687                                 _("while adding filesystem to journal on %s"),
 688                                 journal_device);
 689                         goto err;
 690                 }
 691                 fputs(_("done\n"), stdout);
 692         } else if (journal_size) {
 693                 fputs(_("Creating journal inode: "), stdout);
 694                 fflush(stdout);
 695                 journal_blocks = figure_journal_size(journal_size, fs);
 696
 697                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 698                                                   journal_flags);
 699                 if (retval) {
 700                         fprintf(stderr, "\n");
 701                         com_err(program_name, retval, "%s",
 702                                 _("\n\twhile trying to create journal file"));
 703                         return retval;
 704                 } else
 705                         fputs(_("done\n"), stdout);
 706                 /*
 707                  * If the filesystem wasn't mounted, we need to force
 708                  * the block group descriptors out.
 709                  */
 710                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 711                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 712         }
 713         print_check_message(fs->super->s_max_mnt_count,
 714                             fs->super->s_checkinterval);
 715         return 0;
 716
 717 err:
 718         free(journal_device);
 719         return 1;
 720 }
 721
 722 static void handle_quota_options(ext2_filsys fs)
 723 {
 724         quota_ctx_t qctx;
 725         ext2_ino_t qf_ino;
 726
 727         if (!usrquota && !grpquota)
 728                 /* Nothing to do. */
 729                 return;
 730
 731         quota_init_context(&qctx, fs, -1);
 732
 733         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
 734                 quota_compute_usage(qctx);
 735
 736         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 737                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
 738                                                 QFMT_VFS_V1)) > 0)
 739                         quota_update_limits(qctx, qf_ino, USRQUOTA);
 740                 quota_write_inode(qctx, USRQUOTA);
 741         } else if (usrquota == QOPT_DISABLE) {
 742                 quota_remove_inode(fs, USRQUOTA);
 743         }
 744
 745         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 746                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
 747                                                 QFMT_VFS_V1)) > 0)
 748                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
 749                 quota_write_inode(qctx, GRPQUOTA);
 750         } else if (grpquota == QOPT_DISABLE) {
 751                 quota_remove_inode(fs, GRPQUOTA);
 752         }
 753
 754         quota_release_context(&qctx);
 755
 756         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 757                 fprintf(stderr, "%s", _("\nWarning: the quota feature is still "
 758                                   "under development\n"
 759                                   "See https://ext4.wiki.kernel.org/"
 760                                   "index.php/Quota for more information\n\n"));
 761                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 762                 ext2fs_mark_super_dirty(fs);
 763         } else if (!fs->super->s_usr_quota_inum &&
 764                    !fs->super->s_grp_quota_inum) {
 765                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 766                 ext2fs_mark_super_dirty(fs);
 767         }
 768
 769         return;
 770 }
 771
 772 #ifdef CONFIG_QUOTA
 773 static void parse_quota_opts(const char *opts)
 774 {
 775         char    *buf, *token, *next, *p;
 776         int     len;
 777
 778         len = strlen(opts);
 779         buf = malloc(len+1);
 780         if (!buf) {
 781                 fputs(_("Couldn't allocate memory to parse quota "
 782                         "options!\n"), stderr);
 783                 exit(1);
 784         }
 785         strcpy(buf, opts);
 786         for (token = buf; token && *token; token = next) {
 787                 p = strchr(token, ',');
 788                 next = 0;
 789                 if (p) {
 790                         *p = 0;
 791                         next = p+1;
 792                 }
 793
 794                 if (strcmp(token, "usrquota") == 0) {
 795                         usrquota = QOPT_ENABLE;
 796                 } else if (strcmp(token, "^usrquota") == 0) {
 797                         usrquota = QOPT_DISABLE;
 798                 } else if (strcmp(token, "grpquota") == 0) {
 799                         grpquota = QOPT_ENABLE;
 800                 } else if (strcmp(token, "^grpquota") == 0) {
 801                         grpquota = QOPT_DISABLE;
 802                 } else {
 803                         fputs(_("\nBad quota options specified.\n\n"
 804                                 "Following valid quota options are available "
 805                                 "(pass by separating with comma):\n"
 806                                 "\t[^]usrquota\n"
 807                                 "\t[^]grpquota\n"
 808                                 "\n\n"), stderr);
 809                         free(buf);
 810                         exit(1);
 811                 }
 812         }
 813         free(buf);
 814 }
 815 #endif
 816
 817 static void parse_e2label_options(int argc, char ** argv)
 818 {
 819         if ((argc < 2) || (argc > 3)) {
 820                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 821                 exit(1);
 822         }
 823         io_options = strchr(argv[1], '?');
 824         if (io_options)
 825                 *io_options++ = 0;
 826         device_name = blkid_get_devname(NULL, argv[1], NULL);
 827         if (!device_name) {
 828                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 829                         argv[1]);
 830                 exit(1);
 831         }
 832         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 833         if (argc == 3) {
 834                 open_flag |= EXT2_FLAG_RW;
 835                 L_flag = 1;
 836                 new_label = argv[2];
 837         } else
 838                 print_label++;
 839 }
 840
 841 static time_t parse_time(char *str)
 842 {
 843         struct  tm      ts;
 844
 845         if (strcmp(str, "now") == 0) {
 846                 return (time(0));
 847         }
 848         memset(&ts, 0, sizeof(ts));
 849 #ifdef HAVE_STRPTIME
 850         strptime(str, "%Y%m%d%H%M%S", &ts);
 851 #else
 852         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 853                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 854         ts.tm_year -= 1900;
 855         ts.tm_mon -= 1;
 856         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 857             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 858             ts.tm_min > 59 || ts.tm_sec > 61)
 859                 ts.tm_mday = 0;
 860 #endif
 861         if (ts.tm_mday == 0) {
 862                 com_err(program_name, 0,
 863                         _("Couldn't parse date/time specifier: %s"),
 864                         str);
 865                 usage();
 866         }
 867         ts.tm_isdst = -1;
 868         return (mktime(&ts));
 869 }
 870
 871 static void parse_tune2fs_options(int argc, char **argv)
 872 {
 873         int c;
 874         char *tmp;
 875         struct group *gr;
 876         struct passwd *pw;
 877         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:";
 878
 879 #ifdef CONFIG_QUOTA
 880         strcat(optstring, "Q:");
 881 #endif
 882         open_flag = 0;
 883
 884         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 885         while ((c = getopt(argc, argv, optstring)) != EOF)
 886                 switch (c) {
 887                 case 'c':
 888                         max_mount_count = strtol(optarg, &tmp, 0);
 889                         if (*tmp || max_mount_count > 16000) {
 890                                 com_err(program_name, 0,
 891                                         _("bad mounts count - %s"),
 892                                         optarg);
 893                                 usage();
 894                         }
 895                         if (max_mount_count == 0)
 896                                 max_mount_count = -1;
 897                         c_flag = 1;
 898                         open_flag = EXT2_FLAG_RW;
 899                         break;
 900                 case 'C':
 901                         mount_count = strtoul(optarg, &tmp, 0);
 902                         if (*tmp || mount_count > 16000) {
 903                                 com_err(program_name, 0,
 904                                         _("bad mounts count - %s"),
 905                                         optarg);
 906                                 usage();
 907                         }
 908                         C_flag = 1;
 909                         open_flag = EXT2_FLAG_RW;
 910                         break;
 911                 case 'e':
 912                         if (strcmp(optarg, "continue") == 0)
 913                                 errors = EXT2_ERRORS_CONTINUE;
 914                         else if (strcmp(optarg, "remount-ro") == 0)
 915                                 errors = EXT2_ERRORS_RO;
 916                         else if (strcmp(optarg, "panic") == 0)
 917                                 errors = EXT2_ERRORS_PANIC;
 918                         else {
 919                                 com_err(program_name, 0,
 920                                         _("bad error behavior - %s"),
 921                                         optarg);
 922                                 usage();
 923                         }
 924                         e_flag = 1;
 925                         open_flag = EXT2_FLAG_RW;
 926                         break;
 927                 case 'E':
 928                         extended_cmd = optarg;
 929                         open_flag |= EXT2_FLAG_RW;
 930                         break;
 931                 case 'f': /* Force */
 932                         f_flag = 1;
 933                         break;
 934                 case 'g':
 935                         resgid = strtoul(optarg, &tmp, 0);
 936                         if (*tmp) {
 937                                 gr = getgrnam(optarg);
 938                                 if (gr == NULL)
 939                                         tmp = optarg;
 940                                 else {
 941                                         resgid = gr->gr_gid;
 942                                         *tmp = 0;
 943                                 }
 944                         }
 945                         if (*tmp) {
 946                                 com_err(program_name, 0,
 947                                         _("bad gid/group name - %s"),
 948                                         optarg);
 949                                 usage();
 950                         }
 951                         g_flag = 1;
 952                         open_flag = EXT2_FLAG_RW;
 953                         break;
 954                 case 'i':
 955                         interval = strtoul(optarg, &tmp, 0);
 956                         switch (*tmp) {
 957                         case 's':
 958                                 tmp++;
 959                                 break;
 960                         case '\0':
 961                         case 'd':
 962                         case 'D': /* days */
 963                                 interval *= 86400;
 964                                 if (*tmp != '\0')
 965                                         tmp++;
 966                                 break;
 967                         case 'm':
 968                         case 'M': /* months! */
 969                                 interval *= 86400 * 30;
 970                                 tmp++;
 971                                 break;
 972                         case 'w':
 973                         case 'W': /* weeks */
 974                                 interval *= 86400 * 7;
 975                                 tmp++;
 976                                 break;
 977                         }
 978                         if (*tmp) {
 979                                 com_err(program_name, 0,
 980                                         _("bad interval - %s"), optarg);
 981                                 usage();
 982                         }
 983                         i_flag = 1;
 984                         open_flag = EXT2_FLAG_RW;
 985                         break;
 986                 case 'j':
 987                         if (!journal_size)
 988                                 journal_size = -1;
 989                         open_flag = EXT2_FLAG_RW;
 990                         break;
 991                 case 'J':
 992                         parse_journal_opts(optarg);
 993                         open_flag = EXT2_FLAG_RW;
 994                         break;
 995                 case 'l':
 996                         l_flag = 1;
 997                         break;
 998                 case 'L':
 999                         new_label = optarg;
1000                         L_flag = 1;
1001                         open_flag |= EXT2_FLAG_RW |
1002                                 EXT2_FLAG_JOURNAL_DEV_OK;
1003                         break;
1004                 case 'm':
1005                         reserved_ratio = strtod(optarg, &tmp);
1006                         if (*tmp || reserved_ratio > 50 ||
1007                             reserved_ratio < 0) {
1008                                 com_err(program_name, 0,
1009                                         _("bad reserved block ratio - %s"),
1010                                         optarg);
1011                                 usage();
1012                         }
1013                         m_flag = 1;
1014                         open_flag = EXT2_FLAG_RW;
1015                         break;
1016                 case 'M':
1017                         new_last_mounted = optarg;
1018                         M_flag = 1;
1019                         open_flag = EXT2_FLAG_RW;
1020                         break;
1021                 case 'o':
1022                         if (mntopts_cmd) {
1023                                 com_err(program_name, 0, "%s",
1024                                         _("-o may only be specified once"));
1025                                 usage();
1026                         }
1027                         mntopts_cmd = optarg;
1028                         open_flag = EXT2_FLAG_RW;
1029                         break;
1030                 case 'O':
1031                         if (features_cmd) {
1032                                 com_err(program_name, 0, "%s",
1033                                         _("-O may only be specified once"));
1034                                 usage();
1035                         }
1036                         features_cmd = optarg;
1037                         open_flag = EXT2_FLAG_RW;
1038                         break;
1039 #ifdef CONFIG_QUOTA
1040                 case 'Q':
1041                         Q_flag = 1;
1042                         parse_quota_opts(optarg);
1043                         open_flag = EXT2_FLAG_RW;
1044                         break;
1045 #endif
1046                 case 'r':
1047                         reserved_blocks = strtoul(optarg, &tmp, 0);
1048                         if (*tmp) {
1049                                 com_err(program_name, 0,
1050                                         _("bad reserved blocks count - %s"),
1051                                         optarg);
1052                                 usage();
1053                         }
1054                         r_flag = 1;
1055                         open_flag = EXT2_FLAG_RW;
1056                         break;
1057                 case 's': /* Deprecated */
1058                         s_flag = atoi(optarg);
1059                         open_flag = EXT2_FLAG_RW;
1060                         break;
1061                 case 'T':
1062                         T_flag = 1;
1063                         last_check_time = parse_time(optarg);
1064                         open_flag = EXT2_FLAG_RW;
1065                         break;
1066                 case 'u':
1067                                 resuid = strtoul(optarg, &tmp, 0);
1068                                 if (*tmp) {
1069                                         pw = getpwnam(optarg);
1070                                         if (pw == NULL)
1071                                                 tmp = optarg;
1072                                         else {
1073                                                 resuid = pw->pw_uid;
1074                                                 *tmp = 0;
1075                                         }
1076                                 }
1077                                 if (*tmp) {
1078                                         com_err(program_name, 0,
1079                                                 _("bad uid/user name - %s"),
1080                                                 optarg);
1081                                         usage();
1082                                 }
1083                                 u_flag = 1;
1084                                 open_flag = EXT2_FLAG_RW;
1085                                 break;
1086                 case 'U':
1087                         new_UUID = optarg;
1088                         U_flag = 1;
1089                         open_flag = EXT2_FLAG_RW |
1090                                 EXT2_FLAG_JOURNAL_DEV_OK;
1091                         break;
1092                 case 'I':
1093                         new_inode_size = strtoul(optarg, &tmp, 0);
1094                         if (*tmp) {
1095                                 com_err(program_name, 0,
1096                                         _("bad inode size - %s"),
1097                                         optarg);
1098                                 usage();
1099                         }
1100                         if (!((new_inode_size &
1101                                (new_inode_size - 1)) == 0)) {
1102                                 com_err(program_name, 0,
1103                                         _("Inode size must be a "
1104                                           "power of two- %s"),
1105                                         optarg);
1106                                 usage();
1107                         }
1108                         open_flag = EXT2_FLAG_RW;
1109                         I_flag = 1;
1110                         break;
1111                 default:
1112                         usage();
1113                 }
1114         if (optind < argc - 1 || optind == argc)
1115                 usage();
1116         if (!open_flag && !l_flag)
1117                 usage();
1118         io_options = strchr(argv[optind], '?');
1119         if (io_options)
1120                 *io_options++ = 0;
1121         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1122         if (!device_name) {
1123                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1124                         argv[optind]);
1125                 exit(1);
1126         }
1127 }
1128
1129 #ifdef CONFIG_BUILD_FINDFS
1130 void do_findfs(int argc, char **argv)
1131 {
1132         char    *dev;
1133
1134         if ((argc != 2) ||
1135             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1136                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1137                 exit(2);
1138         }
1139         dev = blkid_get_devname(NULL, argv[1], NULL);
1140         if (!dev) {
1141                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1142                         argv[1]);
1143                 exit(1);
1144         }
1145         puts(dev);
1146         exit(0);
1147 }
1148 #endif
1149
1150 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1151 {
1152         char    *buf, *token, *next, *p, *arg;
1153         int     len, hash_alg;
1154         int     r_usage = 0;
1155
1156         len = strlen(opts);
1157         buf = malloc(len+1);
1158         if (!buf) {
1159                 fprintf(stderr, "%s",
1160                         _("Couldn't allocate memory to parse options!\n"));
1161                 return 1;
1162         }
1163         strcpy(buf, opts);
1164         for (token = buf; token && *token; token = next) {
1165                 p = strchr(token, ',');
1166                 next = 0;
1167                 if (p) {
1168                         *p = 0;
1169                         next = p+1;
1170                 }
1171                 arg = strchr(token, '=');
1172                 if (arg) {
1173                         *arg = 0;
1174                         arg++;
1175                 }
1176                 if (strcmp(token, "clear-mmp") == 0 ||
1177                     strcmp(token, "clear_mmp") == 0) {
1178                         clear_mmp = 1;
1179                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1180                         unsigned long intv;
1181                         if (!arg) {
1182                                 r_usage++;
1183                                 continue;
1184                         }
1185                         intv = strtoul(arg, &p, 0);
1186                         if (*p) {
1187                                 fprintf(stderr,
1188                                         _("Invalid mmp_update_interval: %s\n"),
1189                                         arg);
1190                                 r_usage++;
1191                                 continue;
1192                         }
1193                         if (intv == 0) {
1194                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1195                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1196                                 fprintf(stderr,
1197                                         _("mmp_update_interval too big: %lu\n"),
1198                                         intv);
1199                                 r_usage++;
1200                                 continue;
1201                         }
1202                         printf(P_("Setting multiple mount protection update "
1203                                   "interval to %lu second\n",
1204                                   "Setting multiple mount protection update "
1205                                   "interval to %lu seconds\n", intv),
1206                                intv);
1207                         fs->super->s_mmp_update_interval = intv;
1208                         ext2fs_mark_super_dirty(fs);
1209                 } else if (!strcmp(token, "test_fs")) {
1210                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1211                         printf("Setting test filesystem flag\n");
1212                         ext2fs_mark_super_dirty(fs);
1213                 } else if (!strcmp(token, "^test_fs")) {
1214                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1215                         printf("Clearing test filesystem flag\n");
1216                         ext2fs_mark_super_dirty(fs);
1217                 } else if (strcmp(token, "stride") == 0) {
1218                         if (!arg) {
1219                                 r_usage++;
1220                                 continue;
1221                         }
1222                         stride = strtoul(arg, &p, 0);
1223                         if (*p) {
1224                                 fprintf(stderr,
1225                                         _("Invalid RAID stride: %s\n"),
1226                                         arg);
1227                                 r_usage++;
1228                                 continue;
1229                         }
1230                         stride_set = 1;
1231                 } else if (strcmp(token, "stripe-width") == 0 ||
1232                            strcmp(token, "stripe_width") == 0) {
1233                         if (!arg) {
1234                                 r_usage++;
1235                                 continue;
1236                         }
1237                         stripe_width = strtoul(arg, &p, 0);
1238                         if (*p) {
1239                                 fprintf(stderr,
1240                                         _("Invalid RAID stripe-width: %s\n"),
1241                                         arg);
1242                                 r_usage++;
1243                                 continue;
1244                         }
1245                         stripe_width_set = 1;
1246                 } else if (strcmp(token, "hash_alg") == 0 ||
1247                            strcmp(token, "hash-alg") == 0) {
1248                         if (!arg) {
1249                                 r_usage++;
1250                                 continue;
1251                         }
1252                         hash_alg = e2p_string2hash(arg);
1253                         if (hash_alg < 0) {
1254                                 fprintf(stderr,
1255                                         _("Invalid hash algorithm: %s\n"),
1256                                         arg);
1257                                 r_usage++;
1258                                 continue;
1259                         }
1260                         fs->super->s_def_hash_version = hash_alg;
1261                         printf(_("Setting default hash algorithm "
1262                                  "to %s (%d)\n"),
1263                                arg, hash_alg);
1264                         ext2fs_mark_super_dirty(fs);
1265                 } else if (!strcmp(token, "mount_opts")) {
1266                         if (!arg) {
1267                                 r_usage++;
1268                                 continue;
1269                         }
1270                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1271                                 fprintf(stderr,
1272                                         "Extended mount options too long\n");
1273                                 continue;
1274                         }
1275                         ext_mount_opts = strdup(arg);
1276                 } else
1277                         r_usage++;
1278         }
1279         if (r_usage) {
1280                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1281                         "Extended options are separated by commas, "
1282                         "and may take an argument which\n"
1283                         "\tis set off by an equals ('=') sign.\n\n"
1284                         "Valid extended options are:\n"
1285                         "\tclear_mmp\n"
1286                         "\thash_alg=<hash algorithm>\n"
1287                         "\tmount_opts=<extended default mount options>\n"
1288                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1289                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1290                         "\ttest_fs\n"
1291                         "\t^test_fs\n"));
1292                 free(buf);
1293                 return 1;
1294         }
1295         free(buf);
1296
1297         return 0;
1298 }
1299
1300 /*
1301  * Fill in the block bitmap bmap with the information regarding the
1302  * blocks to be moved
1303  */
1304 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1305                             ext2fs_block_bitmap bmap)
1306 {
1307         dgrp_t i;
1308         int retval;
1309         ext2_badblocks_list bb_list = 0;
1310         blk64_t j, needed_blocks = 0;
1311         blk64_t start_blk, end_blk;
1312
1313         retval = ext2fs_read_bb_inode(fs, &bb_list);
1314         if (retval)
1315                 return retval;
1316
1317         for (i = 0; i < fs->group_desc_count; i++) {
1318                 start_blk = ext2fs_inode_table_loc(fs, i) +
1319                                         fs->inode_blocks_per_group;
1320
1321                 end_blk = ext2fs_inode_table_loc(fs, i) +
1322                                         new_ino_blks_per_grp;
1323
1324                 for (j = start_blk; j < end_blk; j++) {
1325                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1326                                 /*
1327                                  * IF the block is a bad block we fail
1328                                  */
1329                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1330                                         ext2fs_badblocks_list_free(bb_list);
1331                                         return ENOSPC;
1332                                 }
1333
1334                                 ext2fs_mark_block_bitmap2(bmap, j);
1335                         } else {
1336                                 /*
1337                                  * We are going to use this block for
1338                                  * inode table. So mark them used.
1339                                  */
1340                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1341                         }
1342                 }
1343                 needed_blocks += end_blk - start_blk;
1344         }
1345
1346         ext2fs_badblocks_list_free(bb_list);
1347         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1348                 return ENOSPC;
1349
1350         return 0;
1351 }
1352
1353 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
1354 {
1355         dgrp_t group;
1356         group = ext2fs_group_of_blk2(fs, blk);
1357         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1358                 return 1;
1359         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1360                 return 1;
1361         return 0;
1362 }
1363
1364 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
1365 {
1366         blk64_t start_blk, end_blk;
1367         start_blk = fs->super->s_first_data_block +
1368                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1369         /*
1370          * We cannot get new block beyond end_blk for for the last block group
1371          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1372          */
1373         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1374         if (blk >= start_blk && blk <= end_blk)
1375                 return 1;
1376         return 0;
1377 }
1378
1379 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1380 {
1381
1382         char *buf;
1383         dgrp_t group = 0;
1384         errcode_t retval;
1385         int meta_data = 0;
1386         blk64_t blk, new_blk, goal;
1387         struct blk_move *bmv;
1388
1389         retval = ext2fs_get_mem(fs->blocksize, &buf);
1390         if (retval)
1391                 return retval;
1392
1393         for (new_blk = blk = fs->super->s_first_data_block;
1394              blk < ext2fs_blocks_count(fs->super); blk++) {
1395                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1396                         continue;
1397
1398                 if (ext2fs_is_meta_block(fs, blk)) {
1399                         /*
1400                          * If the block is mapping a fs meta data block
1401                          * like group desc/block bitmap/inode bitmap. We
1402                          * should find a block in the same group and fix
1403                          * the respective fs metadata pointers. Otherwise
1404                          * fail
1405                          */
1406                         group = ext2fs_group_of_blk2(fs, blk);
1407                         goal = ext2fs_group_first_block2(fs, group);
1408                         meta_data = 1;
1409
1410                 } else {
1411                         goal = new_blk;
1412                 }
1413                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1414                 if (retval)
1415                         goto err_out;
1416
1417                 /* new fs meta data block should be in the same group */
1418                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1419                         retval = ENOSPC;
1420                         goto err_out;
1421                 }
1422
1423                 /* Mark this block as allocated */
1424                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1425
1426                 /* Add it to block move list */
1427                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1428                 if (retval)
1429                         goto err_out;
1430
1431                 bmv->old_loc = blk;
1432                 bmv->new_loc = new_blk;
1433
1434                 list_add(&(bmv->list), &blk_move_list);
1435
1436                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1437                 if (retval)
1438                         goto err_out;
1439
1440                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1441                 if (retval)
1442                         goto err_out;
1443         }
1444
1445 err_out:
1446         ext2fs_free_mem(&buf);
1447         return retval;
1448 }
1449
1450 static blk64_t translate_block(blk64_t blk)
1451 {
1452         struct list_head *entry;
1453         struct blk_move *bmv;
1454
1455         list_for_each(entry, &blk_move_list) {
1456                 bmv = list_entry(entry, struct blk_move, list);
1457                 if (bmv->old_loc == blk)
1458                         return bmv->new_loc;
1459         }
1460
1461         return 0;
1462 }
1463
1464 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1465                          blk64_t *block_nr,
1466                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1467                          blk64_t ref_block EXT2FS_ATTR((unused)),
1468                          int ref_offset EXT2FS_ATTR((unused)),
1469                          void *priv_data)
1470 {
1471         int ret = 0;
1472         blk64_t new_blk;
1473         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1474
1475         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1476                 return 0;
1477         new_blk = translate_block(*block_nr);
1478         if (new_blk) {
1479                 *block_nr = new_blk;
1480                 /*
1481                  * This will force the ext2fs_write_inode in the iterator
1482                  */
1483                 ret |= BLOCK_CHANGED;
1484         }
1485
1486         return ret;
1487 }
1488
1489 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1490 {
1491         errcode_t retval = 0;
1492         ext2_ino_t ino;
1493         blk64_t blk;
1494         char *block_buf = 0;
1495         struct ext2_inode inode;
1496         ext2_inode_scan scan = NULL;
1497
1498         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1499         if (retval)
1500                 return retval;
1501
1502         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1503         if (retval)
1504                 goto err_out;
1505
1506         while (1) {
1507                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1508                 if (retval)
1509                         goto err_out;
1510
1511                 if (!ino)
1512                         break;
1513
1514                 if (inode.i_links_count == 0)
1515                         continue; /* inode not in use */
1516
1517                 /* FIXME!!
1518                  * If we end up modifying the journal inode
1519                  * the sb->s_jnl_blocks will differ. But a
1520                  * subsequent e2fsck fixes that.
1521                  * Do we need to fix this ??
1522                  */
1523
1524                 if (ext2fs_file_acl_block(fs, &inode) &&
1525                     ext2fs_test_block_bitmap2(bmap,
1526                                         ext2fs_file_acl_block(fs, &inode))) {
1527                         blk = translate_block(ext2fs_file_acl_block(fs,
1528                                                                     &inode));
1529                         if (!blk)
1530                                 continue;
1531
1532                         ext2fs_file_acl_block_set(fs, &inode, blk);
1533
1534                         /*
1535                          * Write the inode to disk so that inode table
1536                          * resizing can work
1537                          */
1538                         retval = ext2fs_write_inode(fs, ino, &inode);
1539                         if (retval)
1540                                 goto err_out;
1541                 }
1542
1543                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
1544                         continue;
1545
1546                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1547                                                process_block, bmap);
1548                 if (retval)
1549                         goto err_out;
1550
1551         }
1552
1553 err_out:
1554         ext2fs_free_mem(&block_buf);
1555
1556         return retval;
1557 }
1558
1559 /*
1560  * We need to scan for inode and block bitmaps that may need to be
1561  * moved.  This can take place if the filesystem was formatted for
1562  * RAID arrays using the mke2fs's extended option "stride".
1563  */
1564 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1565 {
1566         dgrp_t i;
1567         blk64_t blk, new_blk;
1568
1569         for (i = 0; i < fs->group_desc_count; i++) {
1570                 blk = ext2fs_block_bitmap_loc(fs, i);
1571                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1572                         new_blk = translate_block(blk);
1573                         if (!new_blk)
1574                                 continue;
1575                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1576                 }
1577
1578                 blk = ext2fs_inode_bitmap_loc(fs, i);
1579                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1580                         new_blk = translate_block(blk);
1581                         if (!new_blk)
1582                                 continue;
1583                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1584                 }
1585         }
1586         return 0;
1587 }
1588
1589 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1590 {
1591         dgrp_t i;
1592         blk64_t blk;
1593         errcode_t retval;
1594         int new_ino_blks_per_grp;
1595         unsigned int j;
1596         char *old_itable = NULL, *new_itable = NULL;
1597         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1598         unsigned long old_ino_size;
1599         int old_itable_size, new_itable_size;
1600
1601         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1602         old_ino_size = EXT2_INODE_SIZE(fs->super);
1603
1604         new_ino_blks_per_grp = ext2fs_div_ceil(
1605                                         EXT2_INODES_PER_GROUP(fs->super) *
1606                                         new_ino_size,
1607                                         fs->blocksize);
1608
1609         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1610
1611         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1612         if (retval)
1613                 return retval;
1614
1615         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1616         if (retval)
1617                 goto err_out;
1618
1619         tmp_old_itable = old_itable;
1620         tmp_new_itable = new_itable;
1621
1622         for (i = 0; i < fs->group_desc_count; i++) {
1623                 blk = ext2fs_inode_table_loc(fs, i);
1624                 retval = io_channel_read_blk64(fs->io, blk,
1625                                 fs->inode_blocks_per_group, old_itable);
1626                 if (retval)
1627                         goto err_out;
1628
1629                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1630                         memcpy(new_itable, old_itable, old_ino_size);
1631
1632                         memset(new_itable+old_ino_size, 0,
1633                                         new_ino_size - old_ino_size);
1634
1635                         new_itable += new_ino_size;
1636                         old_itable += old_ino_size;
1637                 }
1638
1639                 /* reset the pointer */
1640                 old_itable = tmp_old_itable;
1641                 new_itable = tmp_new_itable;
1642
1643                 retval = io_channel_write_blk64(fs->io, blk,
1644                                         new_ino_blks_per_grp, new_itable);
1645                 if (retval)
1646                         goto err_out;
1647         }
1648
1649         /* Update the meta data */
1650         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1651         fs->super->s_inode_size = new_ino_size;
1652
1653 err_out:
1654         if (old_itable)
1655                 ext2fs_free_mem(&old_itable);
1656
1657         if (new_itable)
1658                 ext2fs_free_mem(&new_itable);
1659
1660         return retval;
1661 }
1662
1663 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1664 {
1665         blk64_t         blk;
1666         ext2_ino_t      ino;
1667         unsigned int    group = 0;
1668         unsigned int    count = 0;
1669         int             total_free = 0;
1670         int             group_free = 0;
1671
1672         /*
1673          * First calculate the block statistics
1674          */
1675         for (blk = fs->super->s_first_data_block;
1676              blk < ext2fs_blocks_count(fs->super); blk++) {
1677                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1678                         group_free++;
1679                         total_free++;
1680                 }
1681                 count++;
1682                 if ((count == fs->super->s_blocks_per_group) ||
1683                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1684                         ext2fs_bg_free_blocks_count_set(fs, group++,
1685                                                         group_free);
1686                         count = 0;
1687                         group_free = 0;
1688                 }
1689         }
1690         total_free = EXT2FS_C2B(fs, total_free);
1691         ext2fs_free_blocks_count_set(fs->super, total_free);
1692
1693         /*
1694          * Next, calculate the inode statistics
1695          */
1696         group_free = 0;
1697         total_free = 0;
1698         count = 0;
1699         group = 0;
1700
1701         /* Protect loop from wrap-around if s_inodes_count maxed */
1702         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1703                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1704                         group_free++;
1705                         total_free++;
1706                 }
1707                 count++;
1708                 if ((count == fs->super->s_inodes_per_group) ||
1709                     (ino == fs->super->s_inodes_count)) {
1710                         ext2fs_bg_free_inodes_count_set(fs, group++,
1711                                                         group_free);
1712                         count = 0;
1713                         group_free = 0;
1714                 }
1715         }
1716         fs->super->s_free_inodes_count = total_free;
1717         ext2fs_mark_super_dirty(fs);
1718         return 0;
1719 }
1720
1721 #define list_for_each_safe(pos, pnext, head) \
1722         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1723              pos = pnext, pnext = pos->next)
1724
1725 static void free_blk_move_list(void)
1726 {
1727         struct list_head *entry, *tmp;
1728         struct blk_move *bmv;
1729
1730         list_for_each_safe(entry, tmp, &blk_move_list) {
1731                 bmv = list_entry(entry, struct blk_move, list);
1732                 list_del(entry);
1733                 ext2fs_free_mem(&bmv);
1734         }
1735         return;
1736 }
1737
1738 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1739 {
1740         errcode_t retval;
1741         int new_ino_blks_per_grp;
1742         ext2fs_block_bitmap bmap;
1743
1744         retval = ext2fs_read_inode_bitmap(fs);
1745         if (retval) {
1746                 fputs(_("Failed to read inode bitmap\n"), stderr);
1747                 return retval;
1748         }
1749         retval = ext2fs_read_block_bitmap(fs);
1750         if (retval) {
1751                 fputs(_("Failed to read block bitmap\n"), stderr);
1752                 return retval;
1753         }
1754         INIT_LIST_HEAD(&blk_move_list);
1755
1756
1757         new_ino_blks_per_grp = ext2fs_div_ceil(
1758                                         EXT2_INODES_PER_GROUP(fs->super)*
1759                                         new_size,
1760                                         fs->blocksize);
1761
1762         /* We may change the file system.
1763          * Mark the file system as invalid so that
1764          * the user is prompted to run fsck.
1765          */
1766         fs->super->s_state &= ~EXT2_VALID_FS;
1767
1768         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1769                                                 &bmap);
1770         if (retval) {
1771                 fputs(_("Failed to allocate block bitmap when "
1772                                 "increasing inode size\n"), stderr);
1773                 return retval;
1774         }
1775         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1776         if (retval) {
1777                 fputs(_("Not enough space to increase inode size \n"), stderr);
1778                 goto err_out;
1779         }
1780         retval = move_block(fs, bmap);
1781         if (retval) {
1782                 fputs(_("Failed to relocate blocks during inode resize \n"),
1783                       stderr);
1784                 goto err_out;
1785         }
1786         retval = inode_scan_and_fix(fs, bmap);
1787         if (retval)
1788                 goto err_out_undo;
1789
1790         retval = group_desc_scan_and_fix(fs, bmap);
1791         if (retval)
1792                 goto err_out_undo;
1793
1794         retval = expand_inode_table(fs, new_size);
1795         if (retval)
1796                 goto err_out_undo;
1797
1798         ext2fs_calculate_summary_stats(fs);
1799
1800         fs->super->s_state |= EXT2_VALID_FS;
1801         /* mark super block and block bitmap as dirty */
1802         ext2fs_mark_super_dirty(fs);
1803         ext2fs_mark_bb_dirty(fs);
1804
1805 err_out:
1806         free_blk_move_list();
1807         ext2fs_free_block_bitmap(bmap);
1808
1809         return retval;
1810
1811 err_out_undo:
1812         free_blk_move_list();
1813         ext2fs_free_block_bitmap(bmap);
1814         fputs(_("Error in resizing the inode size.\n"
1815                         "Run e2undo to undo the "
1816                         "file system changes. \n"), stderr);
1817
1818         return retval;
1819 }
1820
1821 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1822 {
1823         errcode_t retval = 0;
1824         const char *tdb_dir;
1825         char *tdb_file;
1826         char *dev_name, *tmp_name;
1827
1828 #if 0 /* FIXME!! */
1829         /*
1830          * Configuration via a conf file would be
1831          * nice
1832          */
1833         profile_get_string(profile, "scratch_files",
1834                                         "directory", 0, 0,
1835                                         &tdb_dir);
1836 #endif
1837         tmp_name = strdup(name);
1838         if (!tmp_name) {
1839         alloc_fn_fail:
1840                 com_err(program_name, ENOMEM, "%s",
1841                         _("Couldn't allocate memory for tdb filename\n"));
1842                 return ENOMEM;
1843         }
1844         dev_name = basename(tmp_name);
1845
1846         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1847         if (!tdb_dir)
1848                 tdb_dir = "/var/lib/e2fsprogs";
1849
1850         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1851             access(tdb_dir, W_OK))
1852                 return 0;
1853
1854         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1855         if (!tdb_file)
1856                 goto alloc_fn_fail;
1857         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1858
1859         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1860                 retval = errno;
1861                 com_err(program_name, retval,
1862                         _("while trying to delete %s"), tdb_file);
1863                 free(tdb_file);
1864                 return retval;
1865         }
1866
1867         set_undo_io_backing_manager(*io_ptr);
1868         *io_ptr = undo_io_manager;
1869         set_undo_io_backup_file(tdb_file);
1870         printf(_("To undo the tune2fs operation please run "
1871                  "the command\n    e2undo %s %s\n\n"),
1872                  tdb_file, name);
1873         free(tdb_file);
1874         free(tmp_name);
1875         return retval;
1876 }
1877
1878 int main(int argc, char **argv)
1879 {
1880         errcode_t retval;
1881         ext2_filsys fs;
1882         struct ext2_super_block *sb;
1883         io_manager io_ptr, io_ptr_orig = NULL;
1884         int rc = 0;
1885
1886 #ifdef ENABLE_NLS
1887         setlocale(LC_MESSAGES, "");
1888         setlocale(LC_CTYPE, "");
1889         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1890         textdomain(NLS_CAT_NAME);
1891         set_com_err_gettext(gettext);
1892 #endif
1893         if (argc && *argv)
1894                 program_name = *argv;
1895         add_error_table(&et_ext2_error_table);
1896
1897 #ifdef CONFIG_BUILD_FINDFS
1898         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1899                 do_findfs(argc, argv);
1900 #endif
1901         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1902                 parse_e2label_options(argc, argv);
1903         else
1904                 parse_tune2fs_options(argc, argv);
1905
1906 #ifdef CONFIG_TESTIO_DEBUG
1907         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1908                 io_ptr = test_io_manager;
1909                 test_io_backing_manager = unix_io_manager;
1910         } else
1911 #endif
1912                 io_ptr = unix_io_manager;
1913
1914 retry_open:
1915         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1916                 open_flag |= EXT2_FLAG_SKIP_MMP;
1917
1918         open_flag |= EXT2_FLAG_64BITS;
1919
1920         /* keep the filesystem struct around to dump MMP data */
1921         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1922
1923         retval = ext2fs_open2(device_name, io_options, open_flag,
1924                               0, 0, io_ptr, &fs);
1925         if (retval) {
1926                 com_err(program_name, retval,
1927                         _("while trying to open %s"),
1928                         device_name);
1929                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1930                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1931                         dump_mmp_msg(fs->mmp_buf,
1932                                      _("If you are sure the filesystem "
1933                                        "is not in use on any node, run:\n"
1934                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1935                 else if (retval == EXT2_ET_MMP_FAILED)
1936                         dump_mmp_msg(fs->mmp_buf, NULL);
1937                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1938                         fprintf(stderr,
1939                                 _("MMP block magic is bad. Try to fix it by "
1940                                   "running:\n'e2fsck -f %s'\n"), device_name);
1941                 else if (retval != EXT2_ET_MMP_FAILED)
1942                         fprintf(stderr, "%s",
1943                              _("Couldn't find valid filesystem superblock.\n"));
1944
1945                 ext2fs_free(fs);
1946                 exit(1);
1947         }
1948         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
1949
1950         if (I_flag && !io_ptr_orig) {
1951                 /*
1952                  * Check the inode size is right so we can issue an
1953                  * error message and bail before setting up the tdb
1954                  * file.
1955                  */
1956                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1957                         fprintf(stderr, _("The inode size is already %lu\n"),
1958                                 new_inode_size);
1959                         rc = 1;
1960                         goto closefs;
1961                 }
1962                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1963                         fprintf(stderr, "%s",
1964                                 _("Shrinking inode size is not supported\n"));
1965                         rc = 1;
1966                         goto closefs;
1967                 }
1968                 if (new_inode_size > fs->blocksize) {
1969                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
1970                                 new_inode_size, fs->blocksize);
1971                         rc = 1;
1972                         goto closefs;
1973                 }
1974
1975                 /*
1976                  * If inode resize is requested use the
1977                  * Undo I/O manager
1978                  */
1979                 io_ptr_orig = io_ptr;
1980                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1981                 if (retval) {
1982                         rc = 1;
1983                         goto closefs;
1984                 }
1985                 if (io_ptr != io_ptr_orig) {
1986                         ext2fs_close(fs);
1987                         goto retry_open;
1988                 }
1989         }
1990
1991         sb = fs->super;
1992         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1993
1994         if (print_label) {
1995                 /* For e2label emulation */
1996                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1997                        sb->s_volume_name);
1998                 remove_error_table(&et_ext2_error_table);
1999                 goto closefs;
2000         }
2001
2002         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2003         if (retval) {
2004                 com_err("ext2fs_check_if_mount", retval,
2005                         _("while determining whether %s is mounted."),
2006                         device_name);
2007                 rc = 1;
2008                 goto closefs;
2009         }
2010         /* Normally we only need to write out the superblock */
2011         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2012
2013         if (c_flag) {
2014                 sb->s_max_mnt_count = max_mount_count;
2015                 ext2fs_mark_super_dirty(fs);
2016                 printf(_("Setting maximal mount count to %d\n"),
2017                        max_mount_count);
2018         }
2019         if (C_flag) {
2020                 sb->s_mnt_count = mount_count;
2021                 ext2fs_mark_super_dirty(fs);
2022                 printf(_("Setting current mount count to %d\n"), mount_count);
2023         }
2024         if (e_flag) {
2025                 sb->s_errors = errors;
2026                 ext2fs_mark_super_dirty(fs);
2027                 printf(_("Setting error behavior to %d\n"), errors);
2028         }
2029         if (g_flag) {
2030                 sb->s_def_resgid = resgid;
2031                 ext2fs_mark_super_dirty(fs);
2032                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2033         }
2034         if (i_flag) {
2035                 if (interval >= (1ULL << 32)) {
2036                         com_err(program_name, 0,
2037                                 _("interval between checks is too big (%lu)"),
2038                                 interval);
2039                         rc = 1;
2040                         goto closefs;
2041                 }
2042                 sb->s_checkinterval = interval;
2043                 ext2fs_mark_super_dirty(fs);
2044                 printf(_("Setting interval between checks to %lu seconds\n"),
2045                        interval);
2046         }
2047         if (m_flag) {
2048                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2049                                           ext2fs_blocks_count(sb) / 100.0);
2050                 ext2fs_mark_super_dirty(fs);
2051                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2052                         reserved_ratio, ext2fs_r_blocks_count(sb));
2053         }
2054         if (r_flag) {
2055                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2056                         com_err(program_name, 0,
2057                                 _("reserved blocks count is too big (%llu)"),
2058                                 reserved_blocks);
2059                         rc = 1;
2060                         goto closefs;
2061                 }
2062                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2063                 ext2fs_mark_super_dirty(fs);
2064                 printf(_("Setting reserved blocks count to %llu\n"),
2065                        reserved_blocks);
2066         }
2067         if (s_flag == 1) {
2068                 if (sb->s_feature_ro_compat &
2069                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
2070                         fputs(_("\nThe filesystem already has sparse "
2071                                 "superblocks.\n"), stderr);
2072                 else {
2073                         sb->s_feature_ro_compat |=
2074                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2075                         sb->s_state &= ~EXT2_VALID_FS;
2076                         ext2fs_mark_super_dirty(fs);
2077                         printf(_("\nSparse superblock flag set.  %s"),
2078                                _(please_fsck));
2079                 }
2080         }
2081         if (s_flag == 0) {
2082                 fputs(_("\nClearing the sparse superflag not supported.\n"),
2083                       stderr);
2084                 rc = 1;
2085                 goto closefs;
2086         }
2087         if (T_flag) {
2088                 sb->s_lastcheck = last_check_time;
2089                 ext2fs_mark_super_dirty(fs);
2090                 printf(_("Setting time filesystem last checked to %s\n"),
2091                        ctime(&last_check_time));
2092         }
2093         if (u_flag) {
2094                 sb->s_def_resuid = resuid;
2095                 ext2fs_mark_super_dirty(fs);
2096                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2097         }
2098         if (L_flag) {
2099                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2100                         fputs(_("Warning: label too long, truncating.\n"),
2101                               stderr);
2102                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2103                 strncpy(sb->s_volume_name, new_label,
2104                         sizeof(sb->s_volume_name));
2105                 ext2fs_mark_super_dirty(fs);
2106         }
2107         if (M_flag) {
2108                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2109                 strncpy(sb->s_last_mounted, new_last_mounted,
2110                         sizeof(sb->s_last_mounted));
2111                 ext2fs_mark_super_dirty(fs);
2112         }
2113         if (mntopts_cmd) {
2114                 rc = update_mntopts(fs, mntopts_cmd);
2115                 if (rc)
2116                         goto closefs;
2117         }
2118         if (features_cmd) {
2119                 rc = update_feature_set(fs, features_cmd);
2120                 if (rc)
2121                         goto closefs;
2122         }
2123         if (extended_cmd) {
2124                 rc = parse_extended_opts(fs, extended_cmd);
2125                 if (rc)
2126                         goto closefs;
2127                 if (clear_mmp && !f_flag) {
2128                         fputs(_("Error in using clear_mmp. "
2129                                 "It must be used with -f\n"),
2130                               stderr);
2131                         goto closefs;
2132                 }
2133         }
2134         if (clear_mmp) {
2135                 rc = ext2fs_mmp_clear(fs);
2136                 goto closefs;
2137         }
2138         if (journal_size || journal_device) {
2139                 rc = add_journal(fs);
2140                 if (rc)
2141                         goto closefs;
2142         }
2143
2144         if (Q_flag) {
2145                 if (mount_flags & EXT2_MF_MOUNTED) {
2146                         fputs(_("The quota feature may only be changed when "
2147                                 "the filesystem is unmounted.\n"), stderr);
2148                         rc = 1;
2149                         goto closefs;
2150                 }
2151                 handle_quota_options(fs);
2152         }
2153
2154         if (U_flag) {
2155                 int set_csum = 0;
2156                 dgrp_t i;
2157
2158                 if (sb->s_feature_ro_compat &
2159                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2160                         /*
2161                          * Changing the UUID requires rewriting all metadata,
2162                          * which can race with a mounted fs.  Don't allow that.
2163                          */
2164                         if (mount_flags & EXT2_MF_MOUNTED) {
2165                                 fputs(_("The UUID may only be "
2166                                         "changed when the filesystem is "
2167                                         "unmounted.\n"), stderr);
2168                                 exit(1);
2169                         }
2170                         if (check_fsck_needed(fs))
2171                                 exit(1);
2172
2173                         /*
2174                          * Determine if the block group checksums are
2175                          * correct so we know whether or not to set
2176                          * them later on.
2177                          */
2178                         for (i = 0; i < fs->group_desc_count; i++)
2179                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2180                                         break;
2181                         if (i >= fs->group_desc_count)
2182                                 set_csum = 1;
2183                 }
2184                 if ((strcasecmp(new_UUID, "null") == 0) ||
2185                     (strcasecmp(new_UUID, "clear") == 0)) {
2186                         uuid_clear(sb->s_uuid);
2187                 } else if (strcasecmp(new_UUID, "time") == 0) {
2188                         uuid_generate_time(sb->s_uuid);
2189                 } else if (strcasecmp(new_UUID, "random") == 0) {
2190                         uuid_generate(sb->s_uuid);
2191                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2192                         com_err(program_name, 0, "%s",
2193                                 _("Invalid UUID format\n"));
2194                         rc = 1;
2195                         goto closefs;
2196                 }
2197                 if (set_csum) {
2198                         for (i = 0; i < fs->group_desc_count; i++)
2199                                 ext2fs_group_desc_csum_set(fs, i);
2200                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2201                 }
2202                 ext2fs_mark_super_dirty(fs);
2203         }
2204         if (I_flag) {
2205                 if (mount_flags & EXT2_MF_MOUNTED) {
2206                         fputs(_("The inode size may only be "
2207                                 "changed when the filesystem is "
2208                                 "unmounted.\n"), stderr);
2209                         rc = 1;
2210                         goto closefs;
2211                 }
2212                 if (fs->super->s_feature_incompat &
2213                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2214                         fputs(_("Changing the inode size not supported for "
2215                                 "filesystems with the flex_bg\n"
2216                                 "feature enabled.\n"),
2217                               stderr);
2218                         rc = 1;
2219                         goto closefs;
2220                 }
2221                 /*
2222                  * We want to update group descriptor also
2223                  * with the new free inode count
2224                  */
2225                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2226                 if (resize_inode(fs, new_inode_size) == 0) {
2227                         printf(_("Setting inode size %lu\n"),
2228                                                         new_inode_size);
2229                 } else {
2230                         printf("%s", _("Failed to change inode size\n"));
2231                         rc = 1;
2232                         goto closefs;
2233                 }
2234         }
2235
2236         if (l_flag)
2237                 list_super(sb);
2238         if (stride_set) {
2239                 sb->s_raid_stride = stride;
2240                 ext2fs_mark_super_dirty(fs);
2241                 printf(_("Setting stride size to %d\n"), stride);
2242         }
2243         if (stripe_width_set) {
2244                 sb->s_raid_stripe_width = stripe_width;
2245                 ext2fs_mark_super_dirty(fs);
2246                 printf(_("Setting stripe width to %d\n"), stripe_width);
2247         }
2248         if (ext_mount_opts) {
2249                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2250                         sizeof(fs->super->s_mount_opts));
2251                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2252                 ext2fs_mark_super_dirty(fs);
2253                 printf(_("Setting extended default mount options to '%s'\n"),
2254                        ext_mount_opts);
2255                 free(ext_mount_opts);
2256         }
2257         free(device_name);
2258         remove_error_table(&et_ext2_error_table);
2259
2260 closefs:
2261         if (rc) {
2262                 ext2fs_mmp_stop(fs);
2263                 exit(1);
2264         }
2265
2266         return (ext2fs_close(fs) ? 1 : 0);
2267 }