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 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include "config.h"
  31 #include <fcntl.h>
  32 #include <grp.h>
  33 #ifdef HAVE_GETOPT_H
  34 #include <getopt.h>
  35 #else
  36 extern char *optarg;
  37 extern int optind;
  38 #endif
  39 #include <pwd.h>
  40 #include <stdio.h>
  41 #ifdef HAVE_STDLIB_H
  42 #include <stdlib.h>
  43 #endif
  44 #include <string.h>
  45 #include <time.h>
  46 #include <unistd.h>
  47 #include <sys/types.h>
  48 #include <libgen.h>
  49 #include <limits.h>
  50
  51 #include "ext2fs/ext2_fs.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "et/com_err.h"
  54 #include "uuid/uuid.h"
  55 #include "e2p/e2p.h"
  56 #include "jfs_user.h"
  57 #include "util.h"
  58 #include "blkid/blkid.h"
  59 #include "quota/mkquota.h"
  60
  61 #include "../version.h"
  62 #include "nls-enable.h"
  63
  64 #define QOPT_ENABLE     (1)
  65 #define QOPT_DISABLE    (-1)
  66
  67 extern int ask_yn(const char *string, int def);
  68
  69 const char *program_name = "tune2fs";
  70 char *device_name;
  71 char *new_label, *new_last_mounted, *new_UUID;
  72 char *io_options;
  73 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  74 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  75 static int I_flag;
  76 static int clear_mmp;
  77 static time_t last_check_time;
  78 static int print_label;
  79 static int max_mount_count, mount_count, mount_flags;
  80 static unsigned long interval;
  81 static blk64_t reserved_blocks;
  82 static double reserved_ratio;
  83 static unsigned long resgid, resuid;
  84 static unsigned short errors;
  85 static int open_flag;
  86 static char *features_cmd;
  87 static char *mntopts_cmd;
  88 static int stride, stripe_width;
  89 static int stride_set, stripe_width_set;
  90 static char *extended_cmd;
  91 static unsigned long new_inode_size;
  92 static char *ext_mount_opts;
  93 static int usrquota, grpquota;
  94
  95 int journal_size, journal_flags;
  96 char *journal_device;
  97
  98 static struct list_head blk_move_list;
  99
 100 struct blk_move {
 101         struct list_head list;
 102         blk64_t old_loc;
 103         blk64_t new_loc;
 104 };
 105
 106
 107 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 108
 109 #ifdef CONFIG_BUILD_FINDFS
 110 void do_findfs(int argc, char **argv);
 111 #endif
 112
 113 static void usage(void)
 114 {
 115         fprintf(stderr,
 116                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 117                   "[-g group]\n"
 118                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 119                   "\t[-m reserved_blocks_percent] "
 120                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 121                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 122                   "[-L volume_label]\n"
 123                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 124                   "\t[-E extended-option[,...]] [-T last_check_time] "
 125                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 126         exit(1);
 127 }
 128
 129 static __u32 ok_features[3] = {
 130         /* Compat */
 131         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 132                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 133         /* Incompat */
 134         EXT2_FEATURE_INCOMPAT_FILETYPE |
 135                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 136                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 137                 EXT4_FEATURE_INCOMPAT_MMP,
 138         /* R/O compat */
 139         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 140                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 141                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 142                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 143                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 144                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 145                 EXT4_FEATURE_RO_COMPAT_QUOTA
 146 };
 147
 148 static __u32 clear_ok_features[3] = {
 149         /* Compat */
 150         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 151                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 152                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 153         /* Incompat */
 154         EXT2_FEATURE_INCOMPAT_FILETYPE |
 155                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 156                 EXT4_FEATURE_INCOMPAT_MMP,
 157         /* R/O compat */
 158         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 159                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 160                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 161                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 162                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 163                 EXT4_FEATURE_RO_COMPAT_QUOTA
 164 };
 165
 166 /*
 167  * Remove an external journal from the filesystem
 168  */
 169 static int remove_journal_device(ext2_filsys fs)
 170 {
 171         char            *journal_path;
 172         ext2_filsys     jfs;
 173         char            buf[1024];
 174         journal_superblock_t    *jsb;
 175         int             i, nr_users;
 176         errcode_t       retval;
 177         int             commit_remove_journal = 0;
 178         io_manager      io_ptr;
 179
 180         if (f_flag)
 181                 commit_remove_journal = 1; /* force removal even if error */
 182
 183         uuid_unparse(fs->super->s_journal_uuid, buf);
 184         journal_path = blkid_get_devname(NULL, "UUID", buf);
 185
 186         if (!journal_path) {
 187                 journal_path =
 188                         ext2fs_find_block_device(fs->super->s_journal_dev);
 189                 if (!journal_path)
 190                         goto no_valid_journal;
 191         }
 192
 193 #ifdef CONFIG_TESTIO_DEBUG
 194         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 195                 io_ptr = test_io_manager;
 196                 test_io_backing_manager = unix_io_manager;
 197         } else
 198 #endif
 199                 io_ptr = unix_io_manager;
 200         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 201                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 202                              fs->blocksize, io_ptr, &jfs);
 203         if (retval) {
 204                 com_err(program_name, retval,
 205                         _("while trying to open external journal"));
 206                 goto no_valid_journal;
 207         }
 208         if (!(jfs->super->s_feature_incompat &
 209               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 210                 fprintf(stderr, _("%s is not a journal device.\n"),
 211                         journal_path);
 212                 goto no_valid_journal;
 213         }
 214
 215         /* Get the journal superblock */
 216         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 217                 com_err(program_name, retval,
 218                         _("while reading journal superblock"));
 219                 goto no_valid_journal;
 220         }
 221
 222         jsb = (journal_superblock_t *) buf;
 223         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 224             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 225                 fputs(_("Journal superblock not found!\n"), stderr);
 226                 goto no_valid_journal;
 227         }
 228
 229         /* Find the filesystem UUID */
 230         nr_users = ntohl(jsb->s_nr_users);
 231         for (i = 0; i < nr_users; i++) {
 232                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 233                         break;
 234         }
 235         if (i >= nr_users) {
 236                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 237                       stderr);
 238                 commit_remove_journal = 1;
 239                 goto no_valid_journal;
 240         }
 241         nr_users--;
 242         for (i = 0; i < nr_users; i++)
 243                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 244         jsb->s_nr_users = htonl(nr_users);
 245
 246         /* Write back the journal superblock */
 247         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 248                 com_err(program_name, retval,
 249                         "while writing journal superblock.");
 250                 goto no_valid_journal;
 251         }
 252
 253         commit_remove_journal = 1;
 254
 255 no_valid_journal:
 256         if (commit_remove_journal == 0) {
 257                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 258                         "Use -f option to remove missing journal device.\n"),
 259                       stderr);
 260                 return 1;
 261         }
 262         fs->super->s_journal_dev = 0;
 263         uuid_clear(fs->super->s_journal_uuid);
 264         ext2fs_mark_super_dirty(fs);
 265         fputs(_("Journal removed\n"), stdout);
 266         free(journal_path);
 267
 268         return 0;
 269 }
 270
 271 /* Helper function for remove_journal_inode */
 272 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 273                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 274                                blk64_t ref_block EXT2FS_ATTR((unused)),
 275                                int ref_offset EXT2FS_ATTR((unused)),
 276                                void *private EXT2FS_ATTR((unused)))
 277 {
 278         blk64_t block;
 279         int     group;
 280
 281         block = *blocknr;
 282         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 283         group = ext2fs_group_of_blk2(fs, block);
 284         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 285         ext2fs_group_desc_csum_set(fs, group);
 286         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 287         return 0;
 288 }
 289
 290 /*
 291  * Remove the journal inode from the filesystem
 292  */
 293 static errcode_t remove_journal_inode(ext2_filsys fs)
 294 {
 295         struct ext2_inode       inode;
 296         errcode_t               retval;
 297         ino_t                   ino = fs->super->s_journal_inum;
 298
 299         retval = ext2fs_read_inode(fs, ino,  &inode);
 300         if (retval) {
 301                 com_err(program_name, retval,
 302                         _("while reading journal inode"));
 303                 return retval;
 304         }
 305         if (ino == EXT2_JOURNAL_INO) {
 306                 retval = ext2fs_read_bitmaps(fs);
 307                 if (retval) {
 308                         com_err(program_name, retval,
 309                                 _("while reading bitmaps"));
 310                         return retval;
 311                 }
 312                 retval = ext2fs_block_iterate3(fs, ino,
 313                                                BLOCK_FLAG_READ_ONLY, NULL,
 314                                                release_blocks_proc, NULL);
 315                 if (retval) {
 316                         com_err(program_name, retval,
 317                                 _("while clearing journal inode"));
 318                         return retval;
 319                 }
 320                 memset(&inode, 0, sizeof(inode));
 321                 ext2fs_mark_bb_dirty(fs);
 322                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 323         } else
 324                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 325         retval = ext2fs_write_inode(fs, ino, &inode);
 326         if (retval) {
 327                 com_err(program_name, retval,
 328                         _("while writing journal inode"));
 329                 return retval;
 330         }
 331         fs->super->s_journal_inum = 0;
 332         ext2fs_mark_super_dirty(fs);
 333
 334         return 0;
 335 }
 336
 337 /*
 338  * Update the default mount options
 339  */
 340 static int update_mntopts(ext2_filsys fs, char *mntopts)
 341 {
 342         struct ext2_super_block *sb = fs->super;
 343
 344         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 345                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 346                         mntopts);
 347                 return 1;
 348         }
 349         ext2fs_mark_super_dirty(fs);
 350
 351         return 0;
 352 }
 353
 354 static void request_fsck_afterwards(ext2_filsys fs)
 355 {
 356         static int requested = 0;
 357
 358         if (requested++)
 359                 return;
 360         fs->super->s_state &= ~EXT2_VALID_FS;
 361         printf("\n%s\n", _(please_fsck));
 362         if (mount_flags & EXT2_MF_READONLY)
 363                 printf(_("(and reboot afterwards!)\n"));
 364 }
 365
 366 /*
 367  * Update the feature set as provided by the user.
 368  */
 369 static int update_feature_set(ext2_filsys fs, char *features)
 370 {
 371         struct ext2_super_block *sb = fs->super;
 372         struct ext2_group_desc *gd;
 373         __u32           old_features[3];
 374         int             i, type_err;
 375         unsigned int    mask_err;
 376
 377 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 378                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 379 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 380                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 381 #define FEATURE_CHANGED(type, mask) ((mask) & \
 382                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 383
 384         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 385         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 386         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 387
 388         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 389                               ok_features, clear_ok_features,
 390                               &type_err, &mask_err)) {
 391                 if (!mask_err)
 392                         fprintf(stderr,
 393                                 _("Invalid filesystem option set: %s\n"),
 394                                 features);
 395                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 396                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 397                                           "not supported.\n"),
 398                                 e2p_feature2string(type_err &
 399                                                    E2P_FEATURE_TYPE_MASK,
 400                                                    mask_err));
 401                 else
 402                         fprintf(stderr, _("Setting filesystem feature '%s' "
 403                                           "not supported.\n"),
 404                                 e2p_feature2string(type_err, mask_err));
 405                 return 1;
 406         }
 407
 408         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 409                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 410                     !(mount_flags & EXT2_MF_READONLY)) {
 411                         fputs(_("The has_journal feature may only be "
 412                                 "cleared when the filesystem is\n"
 413                                 "unmounted or mounted "
 414                                 "read-only.\n"), stderr);
 415                         return 1;
 416                 }
 417                 if (sb->s_feature_incompat &
 418                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 419                         fputs(_("The needs_recovery flag is set.  "
 420                                 "Please run e2fsck before clearing\n"
 421                                 "the has_journal flag.\n"), stderr);
 422                         return 1;
 423                 }
 424                 if (sb->s_journal_inum) {
 425                         if (remove_journal_inode(fs))
 426                                 return 1;
 427                 }
 428                 if (sb->s_journal_dev) {
 429                         if (remove_journal_device(fs))
 430                                 return 1;
 431                 }
 432         }
 433         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 434                 int error;
 435
 436                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 437                     (mount_flags & EXT2_MF_READONLY)) {
 438                         fputs(_("The multiple mount protection feature can't\n"
 439                                 "be set if the filesystem is mounted or\n"
 440                                 "read-only.\n"), stderr);
 441                         return 1;
 442                 }
 443
 444                 error = ext2fs_mmp_init(fs);
 445                 if (error) {
 446                         fputs(_("\nError while enabling multiple mount "
 447                                 "protection feature."), stderr);
 448                         return 1;
 449                 }
 450
 451                 /*
 452                  * We want to update group desc with the new free blocks count
 453                  */
 454                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 455
 456                 printf(_("Multiple mount protection has been enabled "
 457                          "with update interval %ds.\n"),
 458                        sb->s_mmp_update_interval);
 459         }
 460
 461         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 462                 int error;
 463
 464                 if (mount_flags & EXT2_MF_READONLY) {
 465                         fputs(_("The multiple mount protection feature cannot\n"
 466                                 "be disabled if the filesystem is readonly.\n"),
 467                                 stderr);
 468                         return 1;
 469                 }
 470
 471                 error = ext2fs_read_bitmaps(fs);
 472                 if (error) {
 473                         fputs(_("Error while reading bitmaps\n"), stderr);
 474                         return 1;
 475                 }
 476
 477                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 478                 if (error) {
 479                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 480
 481                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 482                                 printf(_("Magic number in MMP block does not "
 483                                          "match. expected: %x, actual: %x\n"),
 484                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 485                         else
 486                                 com_err(program_name, error,
 487                                         _("while reading MMP block."));
 488                         goto mmp_error;
 489                 }
 490
 491                 /* We need to force out the group descriptors as well */
 492                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 493                 ext2fs_block_alloc_stats(fs, sb->s_mmp_block, -1);
 494 mmp_error:
 495                 sb->s_mmp_block = 0;
 496                 sb->s_mmp_update_interval = 0;
 497         }
 498
 499         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 500                 /*
 501                  * If adding a journal flag, let the create journal
 502                  * code below handle setting the flag and creating the
 503                  * journal.  We supply a default size if necessary.
 504                  */
 505                 if (!journal_size)
 506                         journal_size = -1;
 507                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 508         }
 509
 510         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 511                 if (!sb->s_def_hash_version)
 512                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 513                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 514                         uuid_generate((unsigned char *) sb->s_hash_seed);
 515         }
 516
 517         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 518                 if (ext2fs_check_desc(fs)) {
 519                         fputs(_("Clearing the flex_bg flag would "
 520                                 "cause the the filesystem to be\n"
 521                                 "inconsistent.\n"), stderr);
 522                         return 1;
 523                 }
 524         }
 525
 526         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 527                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 528                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 529                     !(mount_flags & EXT2_MF_READONLY)) {
 530                         fputs(_("The huge_file feature may only be "
 531                                 "cleared when the filesystem is\n"
 532                                 "unmounted or mounted "
 533                                 "read-only.\n"), stderr);
 534                         return 1;
 535                 }
 536         }
 537
 538         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 539                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 540                 for (i = 0; i < fs->group_desc_count; i++) {
 541                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 542                         gd->bg_itable_unused = 0;
 543                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 544                         ext2fs_group_desc_csum_set(fs, i);
 545                 }
 546                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 547         }
 548
 549         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 550                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 551                 for (i = 0; i < fs->group_desc_count; i++) {
 552                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 553                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 554                                 /*
 555                                  * XXX what we really should do is zap
 556                                  * uninitialized inode tables instead.
 557                                  */
 558                                 request_fsck_afterwards(fs);
 559                                 break;
 560                         }
 561                         gd->bg_itable_unused = 0;
 562                         gd->bg_flags = 0;
 563                         gd->bg_checksum = 0;
 564                 }
 565                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 566         }
 567
 568         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 569                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 570                 /*
 571                  * Set the Q_flag here and handle the quota options in the code
 572                  * below.
 573                  */
 574                 if (!Q_flag) {
 575                         Q_flag = 1;
 576                         /* Enable both user quota and group quota by default */
 577                         usrquota = QOPT_ENABLE;
 578                         grpquota = QOPT_ENABLE;
 579                 }
 580                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 581         }
 582
 583         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 584                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 585                 /*
 586                  * Set the Q_flag here and handle the quota options in the code
 587                  * below.
 588                  */
 589                 if (Q_flag)
 590                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 591                                 "arguments.\n"), stderr);
 592                 Q_flag = 1;
 593                 /* Disable both user quota and group quota by default */
 594                 usrquota = QOPT_DISABLE;
 595                 grpquota = QOPT_DISABLE;
 596         }
 597
 598         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 599             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 600              sb->s_feature_incompat))
 601                 ext2fs_update_dynamic_rev(fs);
 602
 603         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 604                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 605             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 606                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 607             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 608                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 609             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 610                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 611             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 612                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 613                 request_fsck_afterwards(fs);
 614
 615         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 616             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 617             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 618                 ext2fs_mark_super_dirty(fs);
 619
 620         return 0;
 621 }
 622
 623 /*
 624  * Add a journal to the filesystem.
 625  */
 626 static int add_journal(ext2_filsys fs)
 627 {
 628         unsigned long journal_blocks;
 629         errcode_t       retval;
 630         ext2_filsys     jfs;
 631         io_manager      io_ptr;
 632
 633         if (fs->super->s_feature_compat &
 634             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 635                 fputs(_("The filesystem already has a journal.\n"), stderr);
 636                 goto err;
 637         }
 638         if (journal_device) {
 639                 check_plausibility(journal_device);
 640                 check_mount(journal_device, 0, _("journal"));
 641 #ifdef CONFIG_TESTIO_DEBUG
 642                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 643                         io_ptr = test_io_manager;
 644                         test_io_backing_manager = unix_io_manager;
 645                 } else
 646 #endif
 647                         io_ptr = unix_io_manager;
 648                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 649                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 650                                      fs->blocksize, io_ptr, &jfs);
 651                 if (retval) {
 652                         com_err(program_name, retval,
 653                                 _("\n\twhile trying to open journal on %s\n"),
 654                                 journal_device);
 655                         goto err;
 656                 }
 657                 printf(_("Creating journal on device %s: "),
 658                        journal_device);
 659                 fflush(stdout);
 660
 661                 retval = ext2fs_add_journal_device(fs, jfs);
 662                 ext2fs_close(jfs);
 663                 if (retval) {
 664                         com_err(program_name, retval,
 665                                 _("while adding filesystem to journal on %s"),
 666                                 journal_device);
 667                         goto err;
 668                 }
 669                 fputs(_("done\n"), stdout);
 670         } else if (journal_size) {
 671                 fputs(_("Creating journal inode: "), stdout);
 672                 fflush(stdout);
 673                 journal_blocks = figure_journal_size(journal_size, fs);
 674
 675                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 676                                                   journal_flags);
 677                 if (retval) {
 678                         fprintf(stderr, "\n");
 679                         com_err(program_name, retval,
 680                                 _("\n\twhile trying to create journal file"));
 681                         return retval;
 682                 } else
 683                         fputs(_("done\n"), stdout);
 684                 /*
 685                  * If the filesystem wasn't mounted, we need to force
 686                  * the block group descriptors out.
 687                  */
 688                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 689                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 690         }
 691         print_check_message(fs->super->s_max_mnt_count,
 692                             fs->super->s_checkinterval);
 693         return 0;
 694
 695 err:
 696         free(journal_device);
 697         return 1;
 698 }
 699
 700 void handle_quota_options(ext2_filsys fs)
 701 {
 702         quota_ctx_t qctx;
 703         errcode_t retval;
 704         ext2_ino_t qf_ino;
 705
 706         if (!usrquota && !grpquota)
 707                 /* Nothing to do. */
 708                 return;
 709
 710         init_quota_context(&qctx, fs, -1);
 711
 712         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 713                 if ((qf_ino = quota_file_exists(fs, USRQUOTA)) > 0)
 714                         set_sb_quota_inum(fs, qf_ino, USRQUOTA);
 715                 else
 716                         write_quota_inode(qctx, USRQUOTA);
 717         } else if (usrquota == QOPT_DISABLE) {
 718                 remove_quota_inode(fs, USRQUOTA);
 719         }
 720
 721         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 722                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA)) > 0)
 723                         set_sb_quota_inum(fs, qf_ino, GRPQUOTA);
 724                 else
 725                         write_quota_inode(qctx, GRPQUOTA);
 726         } else if (grpquota == QOPT_DISABLE) {
 727                 remove_quota_inode(fs, GRPQUOTA);
 728         }
 729
 730         release_quota_context(&qctx);
 731
 732         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 733                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 734                 ext2fs_mark_super_dirty(fs);
 735         } else if ((usrquota == QOPT_DISABLE) && (grpquota == QOPT_DISABLE)) {
 736                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 737                 ext2fs_mark_super_dirty(fs);
 738         }
 739
 740         return;
 741 }
 742
 743 void parse_quota_opts(const char *opts)
 744 {
 745         char    *buf, *token, *next, *p, *arg;
 746         int     len;
 747
 748         len = strlen(opts);
 749         buf = malloc(len+1);
 750         if (!buf) {
 751                 fputs(_("Couldn't allocate memory to parse quota "
 752                         "options!\n"), stderr);
 753                 exit(1);
 754         }
 755         strcpy(buf, opts);
 756         for (token = buf; token && *token; token = next) {
 757                 p = strchr(token, ',');
 758                 next = 0;
 759                 if (p) {
 760                         *p = 0;
 761                         next = p+1;
 762                 }
 763
 764                 if (strcmp(token, "usrquota") == 0) {
 765                         usrquota = QOPT_ENABLE;
 766                 } else if (strcmp(token, "^usrquota") == 0) {
 767                         usrquota = QOPT_DISABLE;
 768                 } else if (strcmp(token, "grpquota") == 0) {
 769                         grpquota = QOPT_ENABLE;
 770                 } else if (strcmp(token, "^grpquota") == 0) {
 771                         grpquota = QOPT_DISABLE;
 772                 } else {
 773                         fputs(_("\nBad quota options specified.\n\n"
 774                                 "Following valid quota options are available "
 775                                 "(pass by separating with comma):\n"
 776                                 "\t[^]usrquota\n"
 777                                 "\t[^]grpquota\n"
 778                                 "\n\n"), stderr);
 779                         free(buf);
 780                         exit(1);
 781                 }
 782         }
 783         free(buf);
 784 }
 785
 786
 787
 788 static void parse_e2label_options(int argc, char ** argv)
 789 {
 790         if ((argc < 2) || (argc > 3)) {
 791                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 792                 exit(1);
 793         }
 794         io_options = strchr(argv[1], '?');
 795         if (io_options)
 796                 *io_options++ = 0;
 797         device_name = blkid_get_devname(NULL, argv[1], NULL);
 798         if (!device_name) {
 799                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 800                         argv[1]);
 801                 exit(1);
 802         }
 803         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 804         if (argc == 3) {
 805                 open_flag |= EXT2_FLAG_RW;
 806                 L_flag = 1;
 807                 new_label = argv[2];
 808         } else
 809                 print_label++;
 810 }
 811
 812 static time_t parse_time(char *str)
 813 {
 814         struct  tm      ts;
 815
 816         if (strcmp(str, "now") == 0) {
 817                 return (time(0));
 818         }
 819         memset(&ts, 0, sizeof(ts));
 820 #ifdef HAVE_STRPTIME
 821         strptime(str, "%Y%m%d%H%M%S", &ts);
 822 #else
 823         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 824                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 825         ts.tm_year -= 1900;
 826         ts.tm_mon -= 1;
 827         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 828             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 829             ts.tm_min > 59 || ts.tm_sec > 61)
 830                 ts.tm_mday = 0;
 831 #endif
 832         if (ts.tm_mday == 0) {
 833                 com_err(program_name, 0,
 834                         _("Couldn't parse date/time specifier: %s"),
 835                         str);
 836                 usage();
 837         }
 838         ts.tm_isdst = -1;
 839         return (mktime(&ts));
 840 }
 841
 842 static void parse_tune2fs_options(int argc, char **argv)
 843 {
 844         int c;
 845         char *tmp;
 846         struct group *gr;
 847         struct passwd *pw;
 848
 849         open_flag = 0;
 850
 851         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 852         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:Q:T:U:")) != EOF)
 853                 switch (c) {
 854                 case 'c':
 855                         max_mount_count = strtol(optarg, &tmp, 0);
 856                         if (*tmp || max_mount_count > 16000) {
 857                                 com_err(program_name, 0,
 858                                         _("bad mounts count - %s"),
 859                                         optarg);
 860                                 usage();
 861                         }
 862                         if (max_mount_count == 0)
 863                                 max_mount_count = -1;
 864                         c_flag = 1;
 865                         open_flag = EXT2_FLAG_RW;
 866                         break;
 867                 case 'C':
 868                         mount_count = strtoul(optarg, &tmp, 0);
 869                         if (*tmp || mount_count > 16000) {
 870                                 com_err(program_name, 0,
 871                                         _("bad mounts count - %s"),
 872                                         optarg);
 873                                 usage();
 874                         }
 875                         C_flag = 1;
 876                         open_flag = EXT2_FLAG_RW;
 877                         break;
 878                 case 'e':
 879                         if (strcmp(optarg, "continue") == 0)
 880                                 errors = EXT2_ERRORS_CONTINUE;
 881                         else if (strcmp(optarg, "remount-ro") == 0)
 882                                 errors = EXT2_ERRORS_RO;
 883                         else if (strcmp(optarg, "panic") == 0)
 884                                 errors = EXT2_ERRORS_PANIC;
 885                         else {
 886                                 com_err(program_name, 0,
 887                                         _("bad error behavior - %s"),
 888                                         optarg);
 889                                 usage();
 890                         }
 891                         e_flag = 1;
 892                         open_flag = EXT2_FLAG_RW;
 893                         break;
 894                 case 'E':
 895                         extended_cmd = optarg;
 896                         open_flag |= EXT2_FLAG_RW;
 897                         break;
 898                 case 'f': /* Force */
 899                         f_flag = 1;
 900                         break;
 901                 case 'g':
 902                         resgid = strtoul(optarg, &tmp, 0);
 903                         if (*tmp) {
 904                                 gr = getgrnam(optarg);
 905                                 if (gr == NULL)
 906                                         tmp = optarg;
 907                                 else {
 908                                         resgid = gr->gr_gid;
 909                                         *tmp = 0;
 910                                 }
 911                         }
 912                         if (*tmp) {
 913                                 com_err(program_name, 0,
 914                                         _("bad gid/group name - %s"),
 915                                         optarg);
 916                                 usage();
 917                         }
 918                         g_flag = 1;
 919                         open_flag = EXT2_FLAG_RW;
 920                         break;
 921                 case 'i':
 922                         interval = strtoul(optarg, &tmp, 0);
 923                         switch (*tmp) {
 924                         case 's':
 925                                 tmp++;
 926                                 break;
 927                         case '\0':
 928                         case 'd':
 929                         case 'D': /* days */
 930                                 interval *= 86400;
 931                                 if (*tmp != '\0')
 932                                         tmp++;
 933                                 break;
 934                         case 'm':
 935                         case 'M': /* months! */
 936                                 interval *= 86400 * 30;
 937                                 tmp++;
 938                                 break;
 939                         case 'w':
 940                         case 'W': /* weeks */
 941                                 interval *= 86400 * 7;
 942                                 tmp++;
 943                                 break;
 944                         }
 945                         if (*tmp) {
 946                                 com_err(program_name, 0,
 947                                         _("bad interval - %s"), optarg);
 948                                 usage();
 949                         }
 950                         i_flag = 1;
 951                         open_flag = EXT2_FLAG_RW;
 952                         break;
 953                 case 'j':
 954                         if (!journal_size)
 955                                 journal_size = -1;
 956                         open_flag = EXT2_FLAG_RW;
 957                         break;
 958                 case 'J':
 959                         parse_journal_opts(optarg);
 960                         open_flag = EXT2_FLAG_RW;
 961                         break;
 962                 case 'l':
 963                         l_flag = 1;
 964                         break;
 965                 case 'L':
 966                         new_label = optarg;
 967                         L_flag = 1;
 968                         open_flag |= EXT2_FLAG_RW |
 969                                 EXT2_FLAG_JOURNAL_DEV_OK;
 970                         break;
 971                 case 'm':
 972                         reserved_ratio = strtod(optarg, &tmp);
 973                         if (*tmp || reserved_ratio > 50 ||
 974                             reserved_ratio < 0) {
 975                                 com_err(program_name, 0,
 976                                         _("bad reserved block ratio - %s"),
 977                                         optarg);
 978                                 usage();
 979                         }
 980                         m_flag = 1;
 981                         open_flag = EXT2_FLAG_RW;
 982                         break;
 983                 case 'M':
 984                         new_last_mounted = optarg;
 985                         M_flag = 1;
 986                         open_flag = EXT2_FLAG_RW;
 987                         break;
 988                 case 'o':
 989                         if (mntopts_cmd) {
 990                                 com_err(program_name, 0,
 991                                         _("-o may only be specified once"));
 992                                 usage();
 993                         }
 994                         mntopts_cmd = optarg;
 995                         open_flag = EXT2_FLAG_RW;
 996                         break;
 997                 case 'O':
 998                         if (features_cmd) {
 999                                 com_err(program_name, 0,
1000                                         _("-O may only be specified once"));
1001                                 usage();
1002                         }
1003                         features_cmd = optarg;
1004                         open_flag = EXT2_FLAG_RW;
1005                         break;
1006                 case 'Q':
1007                         Q_flag = 1;
1008                         parse_quota_opts(optarg);
1009                         open_flag = EXT2_FLAG_RW;
1010                         break;
1011                 case 'r':
1012                         reserved_blocks = strtoul(optarg, &tmp, 0);
1013                         if (*tmp) {
1014                                 com_err(program_name, 0,
1015                                         _("bad reserved blocks count - %s"),
1016                                         optarg);
1017                                 usage();
1018                         }
1019                         r_flag = 1;
1020                         open_flag = EXT2_FLAG_RW;
1021                         break;
1022                 case 's': /* Deprecated */
1023                         s_flag = atoi(optarg);
1024                         open_flag = EXT2_FLAG_RW;
1025                         break;
1026                 case 'T':
1027                         T_flag = 1;
1028                         last_check_time = parse_time(optarg);
1029                         open_flag = EXT2_FLAG_RW;
1030                         break;
1031                 case 'u':
1032                                 resuid = strtoul(optarg, &tmp, 0);
1033                                 if (*tmp) {
1034                                         pw = getpwnam(optarg);
1035                                         if (pw == NULL)
1036                                                 tmp = optarg;
1037                                         else {
1038                                                 resuid = pw->pw_uid;
1039                                                 *tmp = 0;
1040                                         }
1041                                 }
1042                                 if (*tmp) {
1043                                         com_err(program_name, 0,
1044                                                 _("bad uid/user name - %s"),
1045                                                 optarg);
1046                                         usage();
1047                                 }
1048                                 u_flag = 1;
1049                                 open_flag = EXT2_FLAG_RW;
1050                                 break;
1051                 case 'U':
1052                         new_UUID = optarg;
1053                         U_flag = 1;
1054                         open_flag = EXT2_FLAG_RW |
1055                                 EXT2_FLAG_JOURNAL_DEV_OK;
1056                         break;
1057                 case 'I':
1058                         new_inode_size = strtoul(optarg, &tmp, 0);
1059                         if (*tmp) {
1060                                 com_err(program_name, 0,
1061                                         _("bad inode size - %s"),
1062                                         optarg);
1063                                 usage();
1064                         }
1065                         if (!((new_inode_size &
1066                                (new_inode_size - 1)) == 0)) {
1067                                 com_err(program_name, 0,
1068                                         _("Inode size must be a "
1069                                           "power of two- %s"),
1070                                         optarg);
1071                                 usage();
1072                         }
1073                         open_flag = EXT2_FLAG_RW;
1074                         I_flag = 1;
1075                         break;
1076                 default:
1077                         usage();
1078                 }
1079         if (optind < argc - 1 || optind == argc)
1080                 usage();
1081         if (!open_flag && !l_flag)
1082                 usage();
1083         io_options = strchr(argv[optind], '?');
1084         if (io_options)
1085                 *io_options++ = 0;
1086         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1087         if (!device_name) {
1088                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
1089                         argv[optind]);
1090                 exit(1);
1091         }
1092 }
1093
1094 #ifdef CONFIG_BUILD_FINDFS
1095 void do_findfs(int argc, char **argv)
1096 {
1097         char    *dev;
1098
1099         if ((argc != 2) ||
1100             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1101                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1102                 exit(2);
1103         }
1104         dev = blkid_get_devname(NULL, argv[1], NULL);
1105         if (!dev) {
1106                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1107                         argv[1]);
1108                 exit(1);
1109         }
1110         puts(dev);
1111         exit(0);
1112 }
1113 #endif
1114
1115 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1116 {
1117         char    *buf, *token, *next, *p, *arg;
1118         int     len, hash_alg;
1119         int     r_usage = 0;
1120
1121         len = strlen(opts);
1122         buf = malloc(len+1);
1123         if (!buf) {
1124                 fprintf(stderr,
1125                         _("Couldn't allocate memory to parse options!\n"));
1126                 return 1;
1127         }
1128         strcpy(buf, opts);
1129         for (token = buf; token && *token; token = next) {
1130                 p = strchr(token, ',');
1131                 next = 0;
1132                 if (p) {
1133                         *p = 0;
1134                         next = p+1;
1135                 }
1136                 arg = strchr(token, '=');
1137                 if (arg) {
1138                         *arg = 0;
1139                         arg++;
1140                 }
1141                 if (strcmp(token, "clear-mmp") == 0 ||
1142                     strcmp(token, "clear_mmp") == 0) {
1143                         clear_mmp = 1;
1144                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1145                         unsigned long interval;
1146                         if (!arg) {
1147                                 r_usage++;
1148                                 continue;
1149                         }
1150                         interval = strtoul(arg, &p, 0);
1151                         if (*p) {
1152                                 fprintf(stderr,
1153                                         _("Invalid mmp_update_interval: %s\n"),
1154                                         arg);
1155                                 r_usage++;
1156                                 continue;
1157                         }
1158                         if (interval == 0) {
1159                                 interval = EXT4_MMP_UPDATE_INTERVAL;
1160                         } else if (interval > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1161                                 fprintf(stderr,
1162                                         _("mmp_update_interval too big: %lu\n"),
1163                                         interval);
1164                                 r_usage++;
1165                                 continue;
1166                         }
1167                         printf(P_("Setting multiple mount protection update "
1168                                   "interval to %lu second\n",
1169                                   "Setting multiple mount protection update "
1170                                   "interval to %lu seconds\n", interval),
1171                                interval);
1172                         fs->super->s_mmp_update_interval = interval;
1173                         ext2fs_mark_super_dirty(fs);
1174                 } else if (!strcmp(token, "test_fs")) {
1175                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1176                         printf("Setting test filesystem flag\n");
1177                         ext2fs_mark_super_dirty(fs);
1178                 } else if (!strcmp(token, "^test_fs")) {
1179                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1180                         printf("Clearing test filesystem flag\n");
1181                         ext2fs_mark_super_dirty(fs);
1182                 } else if (strcmp(token, "stride") == 0) {
1183                         if (!arg) {
1184                                 r_usage++;
1185                                 continue;
1186                         }
1187                         stride = strtoul(arg, &p, 0);
1188                         if (*p) {
1189                                 fprintf(stderr,
1190                                         _("Invalid RAID stride: %s\n"),
1191                                         arg);
1192                                 r_usage++;
1193                                 continue;
1194                         }
1195                         stride_set = 1;
1196                 } else if (strcmp(token, "stripe-width") == 0 ||
1197                            strcmp(token, "stripe_width") == 0) {
1198                         if (!arg) {
1199                                 r_usage++;
1200                                 continue;
1201                         }
1202                         stripe_width = strtoul(arg, &p, 0);
1203                         if (*p) {
1204                                 fprintf(stderr,
1205                                         _("Invalid RAID stripe-width: %s\n"),
1206                                         arg);
1207                                 r_usage++;
1208                                 continue;
1209                         }
1210                         stripe_width_set = 1;
1211                 } else if (strcmp(token, "hash_alg") == 0 ||
1212                            strcmp(token, "hash-alg") == 0) {
1213                         if (!arg) {
1214                                 r_usage++;
1215                                 continue;
1216                         }
1217                         hash_alg = e2p_string2hash(arg);
1218                         if (hash_alg < 0) {
1219                                 fprintf(stderr,
1220                                         _("Invalid hash algorithm: %s\n"),
1221                                         arg);
1222                                 r_usage++;
1223                                 continue;
1224                         }
1225                         fs->super->s_def_hash_version = hash_alg;
1226                         printf(_("Setting default hash algorithm "
1227                                  "to %s (%d)\n"),
1228                                arg, hash_alg);
1229                         ext2fs_mark_super_dirty(fs);
1230                 } else if (!strcmp(token, "mount_opts")) {
1231                         if (!arg) {
1232                                 r_usage++;
1233                                 continue;
1234                         }
1235                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1236                                 fprintf(stderr,
1237                                         "Extended mount options too long\n");
1238                                 continue;
1239                         }
1240                         ext_mount_opts = strdup(arg);
1241                 } else
1242                         r_usage++;
1243         }
1244         if (r_usage) {
1245                 fprintf(stderr, _("\nBad options specified.\n\n"
1246                         "Extended options are separated by commas, "
1247                         "and may take an argument which\n"
1248                         "\tis set off by an equals ('=') sign.\n\n"
1249                         "Valid extended options are:\n"
1250                         "\tclear_mmp\n"
1251                         "\thash_alg=<hash algorithm>\n"
1252                         "\tmount_opts=<extended default mount options>\n"
1253                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1254                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1255                         "\ttest_fs\n"
1256                         "\t^test_fs\n"));
1257                 free(buf);
1258                 return 1;
1259         }
1260         free(buf);
1261
1262         return 0;
1263 }
1264
1265 /*
1266  * Fill in the block bitmap bmap with the information regarding the
1267  * blocks to be moved
1268  */
1269 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1270                             ext2fs_block_bitmap bmap)
1271 {
1272         dgrp_t i;
1273         int retval;
1274         ext2_badblocks_list bb_list = 0;
1275         blk64_t j, needed_blocks = 0;
1276         blk64_t start_blk, end_blk;
1277
1278         retval = ext2fs_read_bb_inode(fs, &bb_list);
1279         if (retval)
1280                 return retval;
1281
1282         for (i = 0; i < fs->group_desc_count; i++) {
1283                 start_blk = ext2fs_inode_table_loc(fs, i) +
1284                                         fs->inode_blocks_per_group;
1285
1286                 end_blk = ext2fs_inode_table_loc(fs, i) +
1287                                         new_ino_blks_per_grp;
1288
1289                 for (j = start_blk; j < end_blk; j++) {
1290                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1291                                 /*
1292                                  * IF the block is a bad block we fail
1293                                  */
1294                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1295                                         ext2fs_badblocks_list_free(bb_list);
1296                                         return ENOSPC;
1297                                 }
1298
1299                                 ext2fs_mark_block_bitmap2(bmap, j);
1300                         } else {
1301                                 /*
1302                                  * We are going to use this block for
1303                                  * inode table. So mark them used.
1304                                  */
1305                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1306                         }
1307                 }
1308                 needed_blocks += end_blk - start_blk;
1309         }
1310
1311         ext2fs_badblocks_list_free(bb_list);
1312         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1313                 return ENOSPC;
1314
1315         return 0;
1316 }
1317
1318 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1319 {
1320         dgrp_t group;
1321         group = ext2fs_group_of_blk(fs, blk);
1322         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1323                 return 1;
1324         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1325                 return 1;
1326         return 0;
1327 }
1328
1329 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1330 {
1331         blk_t start_blk, end_blk;
1332         start_blk = fs->super->s_first_data_block +
1333                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1334         /*
1335          * We cannot get new block beyond end_blk for for the last block group
1336          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1337          */
1338         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1339         if (blk >= start_blk && blk <= end_blk)
1340                 return 1;
1341         return 0;
1342 }
1343
1344 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1345 {
1346
1347         char *buf;
1348         dgrp_t group = 0;
1349         errcode_t retval;
1350         int meta_data = 0;
1351         blk64_t blk, new_blk, goal;
1352         struct blk_move *bmv;
1353
1354         retval = ext2fs_get_mem(fs->blocksize, &buf);
1355         if (retval)
1356                 return retval;
1357
1358         for (new_blk = blk = fs->super->s_first_data_block;
1359              blk < ext2fs_blocks_count(fs->super); blk++) {
1360                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1361                         continue;
1362
1363                 if (ext2fs_is_meta_block(fs, blk)) {
1364                         /*
1365                          * If the block is mapping a fs meta data block
1366                          * like group desc/block bitmap/inode bitmap. We
1367                          * should find a block in the same group and fix
1368                          * the respective fs metadata pointers. Otherwise
1369                          * fail
1370                          */
1371                         group = ext2fs_group_of_blk(fs, blk);
1372                         goal = ext2fs_group_first_block2(fs, group);
1373                         meta_data = 1;
1374
1375                 } else {
1376                         goal = new_blk;
1377                 }
1378                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1379                 if (retval)
1380                         goto err_out;
1381
1382                 /* new fs meta data block should be in the same group */
1383                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1384                         retval = ENOSPC;
1385                         goto err_out;
1386                 }
1387
1388                 /* Mark this block as allocated */
1389                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1390
1391                 /* Add it to block move list */
1392                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1393                 if (retval)
1394                         goto err_out;
1395
1396                 bmv->old_loc = blk;
1397                 bmv->new_loc = new_blk;
1398
1399                 list_add(&(bmv->list), &blk_move_list);
1400
1401                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1402                 if (retval)
1403                         goto err_out;
1404
1405                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1406                 if (retval)
1407                         goto err_out;
1408         }
1409
1410 err_out:
1411         ext2fs_free_mem(&buf);
1412         return retval;
1413 }
1414
1415 static blk64_t translate_block(blk64_t blk)
1416 {
1417         struct list_head *entry;
1418         struct blk_move *bmv;
1419
1420         list_for_each(entry, &blk_move_list) {
1421                 bmv = list_entry(entry, struct blk_move, list);
1422                 if (bmv->old_loc == blk)
1423                         return bmv->new_loc;
1424         }
1425
1426         return 0;
1427 }
1428
1429 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1430                          blk64_t *block_nr,
1431                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1432                          blk64_t ref_block EXT2FS_ATTR((unused)),
1433                          int ref_offset EXT2FS_ATTR((unused)),
1434                          void *priv_data)
1435 {
1436         int ret = 0;
1437         blk64_t new_blk;
1438         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1439
1440         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1441                 return 0;
1442         new_blk = translate_block(*block_nr);
1443         if (new_blk) {
1444                 *block_nr = new_blk;
1445                 /*
1446                  * This will force the ext2fs_write_inode in the iterator
1447                  */
1448                 ret |= BLOCK_CHANGED;
1449         }
1450
1451         return ret;
1452 }
1453
1454 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1455 {
1456         errcode_t retval = 0;
1457         ext2_ino_t ino;
1458         blk64_t blk;
1459         char *block_buf = 0;
1460         struct ext2_inode inode;
1461         ext2_inode_scan scan = NULL;
1462
1463         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1464         if (retval)
1465                 return retval;
1466
1467         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1468         if (retval)
1469                 goto err_out;
1470
1471         while (1) {
1472                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1473                 if (retval)
1474                         goto err_out;
1475
1476                 if (!ino)
1477                         break;
1478
1479                 if (inode.i_links_count == 0)
1480                         continue; /* inode not in use */
1481
1482                 /* FIXME!!
1483                  * If we end up modifying the journal inode
1484                  * the sb->s_jnl_blocks will differ. But a
1485                  * subsequent e2fsck fixes that.
1486                  * Do we need to fix this ??
1487                  */
1488
1489                 if (ext2fs_file_acl_block(&inode) &&
1490                     ext2fs_test_block_bitmap2(bmap,
1491                                               ext2fs_file_acl_block(&inode))) {
1492                         blk = translate_block(ext2fs_file_acl_block(&inode));
1493                         if (!blk)
1494                                 continue;
1495
1496                         ext2fs_file_acl_block_set(&inode, blk);
1497
1498                         /*
1499                          * Write the inode to disk so that inode table
1500                          * resizing can work
1501                          */
1502                         retval = ext2fs_write_inode(fs, ino, &inode);
1503                         if (retval)
1504                                 goto err_out;
1505                 }
1506
1507                 if (!ext2fs_inode_has_valid_blocks(&inode))
1508                         continue;
1509
1510                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1511                                                process_block, bmap);
1512                 if (retval)
1513                         goto err_out;
1514
1515         }
1516
1517 err_out:
1518         ext2fs_free_mem(&block_buf);
1519
1520         return retval;
1521 }
1522
1523 /*
1524  * We need to scan for inode and block bitmaps that may need to be
1525  * moved.  This can take place if the filesystem was formatted for
1526  * RAID arrays using the mke2fs's extended option "stride".
1527  */
1528 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1529 {
1530         dgrp_t i;
1531         blk_t blk, new_blk;
1532
1533         for (i = 0; i < fs->group_desc_count; i++) {
1534                 blk = ext2fs_block_bitmap_loc(fs, i);
1535                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1536                         new_blk = translate_block(blk);
1537                         if (!new_blk)
1538                                 continue;
1539                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1540                 }
1541
1542                 blk = ext2fs_inode_bitmap_loc(fs, i);
1543                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1544                         new_blk = translate_block(blk);
1545                         if (!new_blk)
1546                                 continue;
1547                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1548                 }
1549         }
1550         return 0;
1551 }
1552
1553 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1554 {
1555         dgrp_t i;
1556         blk64_t blk;
1557         errcode_t retval;
1558         int new_ino_blks_per_grp;
1559         unsigned int j;
1560         char *old_itable = NULL, *new_itable = NULL;
1561         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1562         unsigned long old_ino_size;
1563         int old_itable_size, new_itable_size;
1564
1565         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1566         old_ino_size = EXT2_INODE_SIZE(fs->super);
1567
1568         new_ino_blks_per_grp = ext2fs_div_ceil(
1569                                         EXT2_INODES_PER_GROUP(fs->super) *
1570                                         new_ino_size,
1571                                         fs->blocksize);
1572
1573         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1574
1575         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1576         if (retval)
1577                 return retval;
1578
1579         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1580         if (retval)
1581                 goto err_out;
1582
1583         tmp_old_itable = old_itable;
1584         tmp_new_itable = new_itable;
1585
1586         for (i = 0; i < fs->group_desc_count; i++) {
1587                 blk = ext2fs_inode_table_loc(fs, i);
1588                 retval = io_channel_read_blk64(fs->io, blk,
1589                                 fs->inode_blocks_per_group, old_itable);
1590                 if (retval)
1591                         goto err_out;
1592
1593                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1594                         memcpy(new_itable, old_itable, old_ino_size);
1595
1596                         memset(new_itable+old_ino_size, 0,
1597                                         new_ino_size - old_ino_size);
1598
1599                         new_itable += new_ino_size;
1600                         old_itable += old_ino_size;
1601                 }
1602
1603                 /* reset the pointer */
1604                 old_itable = tmp_old_itable;
1605                 new_itable = tmp_new_itable;
1606
1607                 retval = io_channel_write_blk64(fs->io, blk,
1608                                         new_ino_blks_per_grp, new_itable);
1609                 if (retval)
1610                         goto err_out;
1611         }
1612
1613         /* Update the meta data */
1614         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1615         fs->super->s_inode_size = new_ino_size;
1616
1617 err_out:
1618         if (old_itable)
1619                 ext2fs_free_mem(&old_itable);
1620
1621         if (new_itable)
1622                 ext2fs_free_mem(&new_itable);
1623
1624         return retval;
1625 }
1626
1627 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1628 {
1629         blk64_t         blk;
1630         ext2_ino_t      ino;
1631         unsigned int    group = 0;
1632         unsigned int    count = 0;
1633         int             total_free = 0;
1634         int             group_free = 0;
1635
1636         /*
1637          * First calculate the block statistics
1638          */
1639         for (blk = fs->super->s_first_data_block;
1640              blk < ext2fs_blocks_count(fs->super); blk++) {
1641                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1642                         group_free++;
1643                         total_free++;
1644                 }
1645                 count++;
1646                 if ((count == fs->super->s_blocks_per_group) ||
1647                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1648                         ext2fs_bg_free_blocks_count_set(fs, group++,
1649                                                         group_free);
1650                         count = 0;
1651                         group_free = 0;
1652                 }
1653         }
1654         total_free = EXT2FS_C2B(fs, total_free);
1655         ext2fs_free_blocks_count_set(fs->super, total_free);
1656
1657         /*
1658          * Next, calculate the inode statistics
1659          */
1660         group_free = 0;
1661         total_free = 0;
1662         count = 0;
1663         group = 0;
1664
1665         /* Protect loop from wrap-around if s_inodes_count maxed */
1666         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1667                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1668                         group_free++;
1669                         total_free++;
1670                 }
1671                 count++;
1672                 if ((count == fs->super->s_inodes_per_group) ||
1673                     (ino == fs->super->s_inodes_count)) {
1674                         ext2fs_bg_free_inodes_count_set(fs, group++,
1675                                                         group_free);
1676                         count = 0;
1677                         group_free = 0;
1678                 }
1679         }
1680         fs->super->s_free_inodes_count = total_free;
1681         ext2fs_mark_super_dirty(fs);
1682         return 0;
1683 }
1684
1685 #define list_for_each_safe(pos, pnext, head) \
1686         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1687              pos = pnext, pnext = pos->next)
1688
1689 static void free_blk_move_list(void)
1690 {
1691         struct list_head *entry, *tmp;
1692         struct blk_move *bmv;
1693
1694         list_for_each_safe(entry, tmp, &blk_move_list) {
1695                 bmv = list_entry(entry, struct blk_move, list);
1696                 list_del(entry);
1697                 ext2fs_free_mem(&bmv);
1698         }
1699         return;
1700 }
1701
1702 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1703 {
1704         errcode_t retval;
1705         int new_ino_blks_per_grp;
1706         ext2fs_block_bitmap bmap;
1707
1708         retval = ext2fs_read_inode_bitmap(fs);
1709         if (retval) {
1710                 fputs(_("Failed to read inode bitmap\n"), stderr);
1711                 return retval;
1712         }
1713         retval = ext2fs_read_block_bitmap(fs);
1714         if (retval) {
1715                 fputs(_("Failed to read block bitmap\n"), stderr);
1716                 return retval;
1717         }
1718         INIT_LIST_HEAD(&blk_move_list);
1719
1720
1721         new_ino_blks_per_grp = ext2fs_div_ceil(
1722                                         EXT2_INODES_PER_GROUP(fs->super)*
1723                                         new_size,
1724                                         fs->blocksize);
1725
1726         /* We may change the file system.
1727          * Mark the file system as invalid so that
1728          * the user is prompted to run fsck.
1729          */
1730         fs->super->s_state &= ~EXT2_VALID_FS;
1731
1732         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1733                                                 &bmap);
1734         if (retval) {
1735                 fputs(_("Failed to allocate block bitmap when "
1736                                 "increasing inode size\n"), stderr);
1737                 return retval;
1738         }
1739         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1740         if (retval) {
1741                 fputs(_("Not enough space to increase inode size \n"), stderr);
1742                 goto err_out;
1743         }
1744         retval = move_block(fs, bmap);
1745         if (retval) {
1746                 fputs(_("Failed to relocate blocks during inode resize \n"),
1747                       stderr);
1748                 goto err_out;
1749         }
1750         retval = inode_scan_and_fix(fs, bmap);
1751         if (retval)
1752                 goto err_out_undo;
1753
1754         retval = group_desc_scan_and_fix(fs, bmap);
1755         if (retval)
1756                 goto err_out_undo;
1757
1758         retval = expand_inode_table(fs, new_size);
1759         if (retval)
1760                 goto err_out_undo;
1761
1762         ext2fs_calculate_summary_stats(fs);
1763
1764         fs->super->s_state |= EXT2_VALID_FS;
1765         /* mark super block and block bitmap as dirty */
1766         ext2fs_mark_super_dirty(fs);
1767         ext2fs_mark_bb_dirty(fs);
1768
1769 err_out:
1770         free_blk_move_list();
1771         ext2fs_free_block_bitmap(bmap);
1772
1773         return retval;
1774
1775 err_out_undo:
1776         free_blk_move_list();
1777         ext2fs_free_block_bitmap(bmap);
1778         fputs(_("Error in resizing the inode size.\n"
1779                         "Run e2undo to undo the "
1780                         "file system changes. \n"), stderr);
1781
1782         return retval;
1783 }
1784
1785 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1786 {
1787         errcode_t retval = 0;
1788         const char *tdb_dir;
1789         char *tdb_file;
1790         char *dev_name, *tmp_name;
1791
1792 #if 0 /* FIXME!! */
1793         /*
1794          * Configuration via a conf file would be
1795          * nice
1796          */
1797         profile_get_string(profile, "scratch_files",
1798                                         "directory", 0, 0,
1799                                         &tdb_dir);
1800 #endif
1801         tmp_name = strdup(name);
1802         if (!tmp_name) {
1803         alloc_fn_fail:
1804                 com_err(program_name, ENOMEM,
1805                         _("Couldn't allocate memory for tdb filename\n"));
1806                 return ENOMEM;
1807         }
1808         dev_name = basename(tmp_name);
1809
1810         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1811         if (!tdb_dir)
1812                 tdb_dir = "/var/lib/e2fsprogs";
1813
1814         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1815             access(tdb_dir, W_OK))
1816                 return 0;
1817
1818         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1819         if (!tdb_file)
1820                 goto alloc_fn_fail;
1821         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1822
1823         if (!access(tdb_file, F_OK)) {
1824                 if (unlink(tdb_file) < 0) {
1825                         retval = errno;
1826                         com_err(program_name, retval,
1827                                 _("while trying to delete %s"),
1828                                 tdb_file);
1829                         free(tdb_file);
1830                         return retval;
1831                 }
1832         }
1833
1834         set_undo_io_backing_manager(*io_ptr);
1835         *io_ptr = undo_io_manager;
1836         set_undo_io_backup_file(tdb_file);
1837         printf(_("To undo the tune2fs operation please run "
1838                  "the command\n    e2undo %s %s\n\n"),
1839                  tdb_file, name);
1840         free(tdb_file);
1841         free(tmp_name);
1842         return retval;
1843 }
1844
1845 int main(int argc, char **argv)
1846 {
1847         errcode_t retval;
1848         ext2_filsys fs;
1849         struct ext2_super_block *sb;
1850         io_manager io_ptr, io_ptr_orig = NULL;
1851         int rc = 0;
1852
1853 #ifdef ENABLE_NLS
1854         setlocale(LC_MESSAGES, "");
1855         setlocale(LC_CTYPE, "");
1856         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1857         textdomain(NLS_CAT_NAME);
1858         set_com_err_gettext(gettext);
1859 #endif
1860         if (argc && *argv)
1861                 program_name = *argv;
1862         add_error_table(&et_ext2_error_table);
1863
1864 #ifdef CONFIG_BUILD_FINDFS
1865         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1866                 do_findfs(argc, argv);
1867 #endif
1868         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1869                 parse_e2label_options(argc, argv);
1870         else
1871                 parse_tune2fs_options(argc, argv);
1872
1873 #ifdef CONFIG_TESTIO_DEBUG
1874         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1875                 io_ptr = test_io_manager;
1876                 test_io_backing_manager = unix_io_manager;
1877         } else
1878 #endif
1879                 io_ptr = unix_io_manager;
1880
1881 retry_open:
1882         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1883                 open_flag |= EXT2_FLAG_SKIP_MMP;
1884
1885         open_flag |= EXT2_FLAG_64BITS;
1886
1887         /* keep the filesystem struct around to dump MMP data */
1888         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1889
1890         retval = ext2fs_open2(device_name, io_options, open_flag,
1891                               0, 0, io_ptr, &fs);
1892         if (retval) {
1893                 com_err(program_name, retval,
1894                         _("while trying to open %s"),
1895                         device_name);
1896                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1897                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1898                         dump_mmp_msg(fs->mmp_buf,
1899                                      _("If you are sure the filesystem "
1900                                        "is not in use on any node, run:\n"
1901                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1902                 else if (retval == EXT2_ET_MMP_FAILED)
1903                         dump_mmp_msg(fs->mmp_buf, NULL);
1904                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1905                         fprintf(stderr,
1906                                 _("MMP block magic is bad. Try to fix it by "
1907                                   "running:\n'e2fsck -f %s'\n"), device_name);
1908                 else if (retval != EXT2_ET_MMP_FAILED)
1909                         fprintf(stderr,
1910                              _("Couldn't find valid filesystem superblock.\n"));
1911
1912                 ext2fs_free(fs);
1913                 exit(1);
1914         }
1915
1916         if (I_flag && !io_ptr_orig) {
1917                 /*
1918                  * Check the inode size is right so we can issue an
1919                  * error message and bail before setting up the tdb
1920                  * file.
1921                  */
1922                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1923                         fprintf(stderr, _("The inode size is already %lu\n"),
1924                                 new_inode_size);
1925                         rc = 1;
1926                         goto closefs;
1927                 }
1928                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1929                         fprintf(stderr, _("Shrinking the inode size is "
1930                                           "not supported\n"));
1931                         rc = 1;
1932                         goto closefs;
1933                 }
1934
1935                 /*
1936                  * If inode resize is requested use the
1937                  * Undo I/O manager
1938                  */
1939                 io_ptr_orig = io_ptr;
1940                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1941                 if (retval) {
1942                         rc = 1;
1943                         goto closefs;
1944                 }
1945                 if (io_ptr != io_ptr_orig) {
1946                         ext2fs_close(fs);
1947                         goto retry_open;
1948                 }
1949         }
1950
1951         sb = fs->super;
1952         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1953
1954         if (print_label) {
1955                 /* For e2label emulation */
1956                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1957                        sb->s_volume_name);
1958                 remove_error_table(&et_ext2_error_table);
1959                 goto closefs;
1960         }
1961
1962         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1963         if (retval) {
1964                 com_err("ext2fs_check_if_mount", retval,
1965                         _("while determining whether %s is mounted."),
1966                         device_name);
1967                 rc = 1;
1968                 goto closefs;
1969         }
1970         /* Normally we only need to write out the superblock */
1971         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1972
1973         if (c_flag) {
1974                 sb->s_max_mnt_count = max_mount_count;
1975                 ext2fs_mark_super_dirty(fs);
1976                 printf(_("Setting maximal mount count to %d\n"),
1977                        max_mount_count);
1978         }
1979         if (C_flag) {
1980                 sb->s_mnt_count = mount_count;
1981                 ext2fs_mark_super_dirty(fs);
1982                 printf(_("Setting current mount count to %d\n"), mount_count);
1983         }
1984         if (e_flag) {
1985                 sb->s_errors = errors;
1986                 ext2fs_mark_super_dirty(fs);
1987                 printf(_("Setting error behavior to %d\n"), errors);
1988         }
1989         if (g_flag) {
1990                 sb->s_def_resgid = resgid;
1991                 ext2fs_mark_super_dirty(fs);
1992                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1993         }
1994         if (i_flag) {
1995                 if (interval >= (1ULL << 32)) {
1996                         com_err(program_name, 0,
1997                                 _("interval between checks is too big (%lu)"),
1998                                 interval);
1999                         rc = 1;
2000                         goto closefs;
2001                 }
2002                 sb->s_checkinterval = interval;
2003                 ext2fs_mark_super_dirty(fs);
2004                 printf(_("Setting interval between checks to %lu seconds\n"),
2005                        interval);
2006         }
2007         if (m_flag) {
2008                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2009                                           ext2fs_blocks_count(sb) / 100.0);
2010                 ext2fs_mark_super_dirty(fs);
2011                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2012                         reserved_ratio, ext2fs_r_blocks_count(sb));
2013         }
2014         if (r_flag) {
2015                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2016                         com_err(program_name, 0,
2017                                 _("reserved blocks count is too big (%llu)"),
2018                                 reserved_blocks);
2019                         rc = 1;
2020                         goto closefs;
2021                 }
2022                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2023                 ext2fs_mark_super_dirty(fs);
2024                 printf(_("Setting reserved blocks count to %llu\n"),
2025                        reserved_blocks);
2026         }
2027         if (s_flag == 1) {
2028                 if (sb->s_feature_ro_compat &
2029                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
2030                         fputs(_("\nThe filesystem already has sparse "
2031                                 "superblocks.\n"), stderr);
2032                 else {
2033                         sb->s_feature_ro_compat |=
2034                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2035                         sb->s_state &= ~EXT2_VALID_FS;
2036                         ext2fs_mark_super_dirty(fs);
2037                         printf(_("\nSparse superblock flag set.  %s"),
2038                                _(please_fsck));
2039                 }
2040         }
2041         if (s_flag == 0) {
2042                 fputs(_("\nClearing the sparse superflag not supported.\n"),
2043                       stderr);
2044                 rc = 1;
2045                 goto closefs;
2046         }
2047         if (T_flag) {
2048                 sb->s_lastcheck = last_check_time;
2049                 ext2fs_mark_super_dirty(fs);
2050                 printf(_("Setting time filesystem last checked to %s\n"),
2051                        ctime(&last_check_time));
2052         }
2053         if (u_flag) {
2054                 sb->s_def_resuid = resuid;
2055                 ext2fs_mark_super_dirty(fs);
2056                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2057         }
2058         if (L_flag) {
2059                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2060                         fputs(_("Warning: label too long, truncating.\n"),
2061                               stderr);
2062                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2063                 strncpy(sb->s_volume_name, new_label,
2064                         sizeof(sb->s_volume_name));
2065                 ext2fs_mark_super_dirty(fs);
2066         }
2067         if (M_flag) {
2068                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2069                 strncpy(sb->s_last_mounted, new_last_mounted,
2070                         sizeof(sb->s_last_mounted));
2071                 ext2fs_mark_super_dirty(fs);
2072         }
2073         if (mntopts_cmd) {
2074                 rc = update_mntopts(fs, mntopts_cmd);
2075                 if (rc)
2076                         goto closefs;
2077         }
2078         if (features_cmd) {
2079                 rc = update_feature_set(fs, features_cmd);
2080                 if (rc)
2081                         goto closefs;
2082         }
2083         if (extended_cmd) {
2084                 rc = parse_extended_opts(fs, extended_cmd);
2085                 if (rc)
2086                         goto closefs;
2087                 if (clear_mmp && !f_flag) {
2088                         fputs(_("Error in using clear_mmp. "
2089                                 "It must be used with -f\n"),
2090                               stderr);
2091                         goto closefs;
2092                 }
2093         }
2094         if (clear_mmp) {
2095                 rc = ext2fs_mmp_clear(fs);
2096                 goto closefs;
2097         }
2098         if (journal_size || journal_device) {
2099                 rc = add_journal(fs);
2100                 if (rc)
2101                         goto closefs;
2102         }
2103
2104         if (Q_flag) {
2105                 if (mount_flags & EXT2_MF_MOUNTED) {
2106                         fputs(_("The quota feature may only be changed when "
2107                                 "the filesystem is unmounted.\n"), stderr);
2108                         rc = 1;
2109                         goto closefs;
2110                 }
2111                 handle_quota_options(fs);
2112         }
2113
2114         if (U_flag) {
2115                 int set_csum = 0;
2116                 dgrp_t i;
2117
2118                 if (sb->s_feature_ro_compat &
2119                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2120                         /*
2121                          * Determine if the block group checksums are
2122                          * correct so we know whether or not to set
2123                          * them later on.
2124                          */
2125                         for (i = 0; i < fs->group_desc_count; i++)
2126                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2127                                         break;
2128                         if (i >= fs->group_desc_count)
2129                                 set_csum = 1;
2130                 }
2131                 if ((strcasecmp(new_UUID, "null") == 0) ||
2132                     (strcasecmp(new_UUID, "clear") == 0)) {
2133                         uuid_clear(sb->s_uuid);
2134                 } else if (strcasecmp(new_UUID, "time") == 0) {
2135                         uuid_generate_time(sb->s_uuid);
2136                 } else if (strcasecmp(new_UUID, "random") == 0) {
2137                         uuid_generate(sb->s_uuid);
2138                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2139                         com_err(program_name, 0, _("Invalid UUID format\n"));
2140                         rc = 1;
2141                         goto closefs;
2142                 }
2143                 if (set_csum) {
2144                         for (i = 0; i < fs->group_desc_count; i++)
2145                                 ext2fs_group_desc_csum_set(fs, i);
2146                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2147                 }
2148                 ext2fs_mark_super_dirty(fs);
2149         }
2150         if (I_flag) {
2151                 if (mount_flags & EXT2_MF_MOUNTED) {
2152                         fputs(_("The inode size may only be "
2153                                 "changed when the filesystem is "
2154                                 "unmounted.\n"), stderr);
2155                         rc = 1;
2156                         goto closefs;
2157                 }
2158                 if (fs->super->s_feature_incompat &
2159                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2160                         fputs(_("Changing the inode size not supported for "
2161                                 "filesystems with the flex_bg\n"
2162                                 "feature enabled.\n"),
2163                               stderr);
2164                         rc = 1;
2165                         goto closefs;
2166                 }
2167                 /*
2168                  * We want to update group descriptor also
2169                  * with the new free inode count
2170                  */
2171                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2172                 if (resize_inode(fs, new_inode_size) == 0) {
2173                         printf(_("Setting inode size %lu\n"),
2174                                                         new_inode_size);
2175                 } else {
2176                         printf(_("Failed to change inode size\n"));
2177                         rc = 1;
2178                         goto closefs;
2179                 }
2180         }
2181
2182         if (l_flag)
2183                 list_super(sb);
2184         if (stride_set) {
2185                 sb->s_raid_stride = stride;
2186                 ext2fs_mark_super_dirty(fs);
2187                 printf(_("Setting stride size to %d\n"), stride);
2188         }
2189         if (stripe_width_set) {
2190                 sb->s_raid_stripe_width = stripe_width;
2191                 ext2fs_mark_super_dirty(fs);
2192                 printf(_("Setting stripe width to %d\n"), stripe_width);
2193         }
2194         if (ext_mount_opts) {
2195                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2196                         sizeof(fs->super->s_mount_opts));
2197                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2198                 ext2fs_mark_super_dirty(fs);
2199                 printf(_("Setting extended default mount options to '%s'\n"),
2200                        ext_mount_opts);
2201                 free(ext_mount_opts);
2202         }
2203         free(device_name);
2204         remove_error_table(&et_ext2_error_table);
2205
2206 closefs:
2207         if (rc) {
2208                 ext2fs_mmp_stop(fs);
2209                 exit(1);
2210         }
2211
2212         return (ext2fs_close(fs) ? 1 : 0);
2213 }