misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #include "config.h"
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #ifdef HAVE_STRINGS_H
  44 #include <strings.h>    /* for strcasecmp() */
  45 #else
  46 #define _BSD_SOURCE     /* for inclusion of strcasecmp() via <string.h> */
  47 #endif
  48 #include <string.h>
  49 #include <time.h>
  50 #include <unistd.h>
  51 #include <sys/types.h>
  52 #include <libgen.h>
  53 #include <limits.h>
  54
  55 #include "ext2fs/ext2_fs.h"
  56 #include "ext2fs/ext2fs.h"
  57 #include "et/com_err.h"
  58 #include "uuid/uuid.h"
  59 #include "e2p/e2p.h"
  60 #include "jfs_user.h"
  61 #include "util.h"
  62 #include "blkid/blkid.h"
  63 #include "quota/mkquota.h"
  64
  65 #include "../version.h"
  66 #include "nls-enable.h"
  67
  68 #define QOPT_ENABLE     (1)
  69 #define QOPT_DISABLE    (-1)
  70
  71 extern int ask_yn(const char *string, int def);
  72
  73 const char *program_name = "tune2fs";
  74 char *device_name;
  75 char *new_label, *new_last_mounted, *new_UUID;
  76 char *io_options;
  77 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  78 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  79 static int I_flag;
  80 static int clear_mmp;
  81 static time_t last_check_time;
  82 static int print_label;
  83 static int max_mount_count, mount_count, mount_flags;
  84 static unsigned long interval;
  85 static blk64_t reserved_blocks;
  86 static double reserved_ratio;
  87 static unsigned long resgid, resuid;
  88 static unsigned short errors;
  89 static int open_flag;
  90 static char *features_cmd;
  91 static char *mntopts_cmd;
  92 static int stride, stripe_width;
  93 static int stride_set, stripe_width_set;
  94 static char *extended_cmd;
  95 static unsigned long new_inode_size;
  96 static char *ext_mount_opts;
  97 static int usrquota, grpquota;
  98
  99 int journal_size, journal_flags;
 100 char *journal_device;
 101 static blk64_t journal_location = ~0LL;
 102
 103 static struct list_head blk_move_list;
 104
 105 struct blk_move {
 106         struct list_head list;
 107         blk64_t old_loc;
 108         blk64_t new_loc;
 109 };
 110
 111
 112 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 113
 114 #ifdef CONFIG_BUILD_FINDFS
 115 void do_findfs(int argc, char **argv);
 116 #endif
 117
 118 static void usage(void)
 119 {
 120         fprintf(stderr,
 121                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 122                   "[-g group]\n"
 123                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 124                   "\t[-m reserved_blocks_percent] "
 125                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 126                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 127                   "[-L volume_label]\n"
 128                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 129 #ifdef CONFIG_QUOTA
 130                   "\t[-Q quota_options]\n"
 131 #endif
 132                   "\t[-E extended-option[,...]] [-T last_check_time] "
 133                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 134         exit(1);
 135 }
 136
 137 static __u32 ok_features[3] = {
 138         /* Compat */
 139         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 140                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 141         /* Incompat */
 142         EXT2_FEATURE_INCOMPAT_FILETYPE |
 143                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 144                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 145                 EXT4_FEATURE_INCOMPAT_MMP,
 146         /* R/O compat */
 147         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 148                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 149                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 150                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 151                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 152 #ifdef CONFIG_QUOTA
 153                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 154 #endif
 155                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 156 };
 157
 158 static __u32 clear_ok_features[3] = {
 159         /* Compat */
 160         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 161                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 162                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 163         /* Incompat */
 164         EXT2_FEATURE_INCOMPAT_FILETYPE |
 165                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 166                 EXT4_FEATURE_INCOMPAT_MMP,
 167         /* R/O compat */
 168         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 169                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 170                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 171                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 172 #ifdef CONFIG_QUOTA
 173                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 174 #endif
 175                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 176 };
 177
 178 /*
 179  * Remove an external journal from the filesystem
 180  */
 181 static int remove_journal_device(ext2_filsys fs)
 182 {
 183         char            *journal_path;
 184         ext2_filsys     jfs;
 185         char            buf[1024];
 186         journal_superblock_t    *jsb;
 187         int             i, nr_users;
 188         errcode_t       retval;
 189         int             commit_remove_journal = 0;
 190         io_manager      io_ptr;
 191
 192         if (f_flag)
 193                 commit_remove_journal = 1; /* force removal even if error */
 194
 195         uuid_unparse(fs->super->s_journal_uuid, buf);
 196         journal_path = blkid_get_devname(NULL, "UUID", buf);
 197
 198         if (!journal_path) {
 199                 journal_path =
 200                         ext2fs_find_block_device(fs->super->s_journal_dev);
 201                 if (!journal_path)
 202                         goto no_valid_journal;
 203         }
 204
 205 #ifdef CONFIG_TESTIO_DEBUG
 206         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 207                 io_ptr = test_io_manager;
 208                 test_io_backing_manager = unix_io_manager;
 209         } else
 210 #endif
 211                 io_ptr = unix_io_manager;
 212         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 213                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 214                              fs->blocksize, io_ptr, &jfs);
 215         if (retval) {
 216                 com_err(program_name, retval, "%s",
 217                         _("while trying to open external journal"));
 218                 goto no_valid_journal;
 219         }
 220         if (!(jfs->super->s_feature_incompat &
 221               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 222                 fprintf(stderr, _("%s is not a journal device.\n"),
 223                         journal_path);
 224                 goto no_valid_journal;
 225         }
 226
 227         /* Get the journal superblock */
 228         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 229                 com_err(program_name, retval, "%s",
 230                         _("while reading journal superblock"));
 231                 goto no_valid_journal;
 232         }
 233
 234         jsb = (journal_superblock_t *) buf;
 235         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 236             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 237                 fputs(_("Journal superblock not found!\n"), stderr);
 238                 goto no_valid_journal;
 239         }
 240
 241         /* Find the filesystem UUID */
 242         nr_users = ntohl(jsb->s_nr_users);
 243         for (i = 0; i < nr_users; i++) {
 244                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 245                         break;
 246         }
 247         if (i >= nr_users) {
 248                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 249                       stderr);
 250                 commit_remove_journal = 1;
 251                 goto no_valid_journal;
 252         }
 253         nr_users--;
 254         for (i = 0; i < nr_users; i++)
 255                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 256         jsb->s_nr_users = htonl(nr_users);
 257
 258         /* Write back the journal superblock */
 259         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 260                 com_err(program_name, retval,
 261                         "while writing journal superblock.");
 262                 goto no_valid_journal;
 263         }
 264
 265         commit_remove_journal = 1;
 266
 267 no_valid_journal:
 268         if (commit_remove_journal == 0) {
 269                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 270                         "Use -f option to remove missing journal device.\n"),
 271                       stderr);
 272                 return 1;
 273         }
 274         fs->super->s_journal_dev = 0;
 275         uuid_clear(fs->super->s_journal_uuid);
 276         ext2fs_mark_super_dirty(fs);
 277         fputs(_("Journal removed\n"), stdout);
 278         free(journal_path);
 279
 280         return 0;
 281 }
 282
 283 /* Helper function for remove_journal_inode */
 284 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 285                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 286                                blk64_t ref_block EXT2FS_ATTR((unused)),
 287                                int ref_offset EXT2FS_ATTR((unused)),
 288                                void *private EXT2FS_ATTR((unused)))
 289 {
 290         blk64_t block;
 291         int     group;
 292
 293         block = *blocknr;
 294         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 295         group = ext2fs_group_of_blk2(fs, block);
 296         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 297         ext2fs_group_desc_csum_set(fs, group);
 298         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 299         return 0;
 300 }
 301
 302 /*
 303  * Remove the journal inode from the filesystem
 304  */
 305 static errcode_t remove_journal_inode(ext2_filsys fs)
 306 {
 307         struct ext2_inode       inode;
 308         errcode_t               retval;
 309         ino_t                   ino = fs->super->s_journal_inum;
 310
 311         retval = ext2fs_read_inode(fs, ino,  &inode);
 312         if (retval) {
 313                 com_err(program_name, retval, "%s",
 314                         _("while reading journal inode"));
 315                 return retval;
 316         }
 317         if (ino == EXT2_JOURNAL_INO) {
 318                 retval = ext2fs_read_bitmaps(fs);
 319                 if (retval) {
 320                         com_err(program_name, retval, "%s",
 321                                 _("while reading bitmaps"));
 322                         return retval;
 323                 }
 324                 retval = ext2fs_block_iterate3(fs, ino,
 325                                                BLOCK_FLAG_READ_ONLY, NULL,
 326                                                release_blocks_proc, NULL);
 327                 if (retval) {
 328                         com_err(program_name, retval, "%s",
 329                                 _("while clearing journal inode"));
 330                         return retval;
 331                 }
 332                 memset(&inode, 0, sizeof(inode));
 333                 ext2fs_mark_bb_dirty(fs);
 334                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 335         } else
 336                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 337         retval = ext2fs_write_inode(fs, ino, &inode);
 338         if (retval) {
 339                 com_err(program_name, retval, "%s",
 340                         _("while writing journal inode"));
 341                 return retval;
 342         }
 343         fs->super->s_journal_inum = 0;
 344         ext2fs_mark_super_dirty(fs);
 345
 346         return 0;
 347 }
 348
 349 /*
 350  * Update the default mount options
 351  */
 352 static int update_mntopts(ext2_filsys fs, char *mntopts)
 353 {
 354         struct ext2_super_block *sb = fs->super;
 355
 356         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 357                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 358                         mntopts);
 359                 return 1;
 360         }
 361         ext2fs_mark_super_dirty(fs);
 362
 363         return 0;
 364 }
 365
 366 static int check_fsck_needed(ext2_filsys fs)
 367 {
 368         if (fs->super->s_state & EXT2_VALID_FS)
 369                 return 0;
 370         printf("\n%s\n", _(please_fsck));
 371         if (mount_flags & EXT2_MF_READONLY)
 372                 printf(_("(and reboot afterwards!)\n"));
 373         return 1;
 374 }
 375
 376 static void request_fsck_afterwards(ext2_filsys fs)
 377 {
 378         static int requested = 0;
 379
 380         if (requested++)
 381                 return;
 382         fs->super->s_state &= ~EXT2_VALID_FS;
 383         printf("\n%s\n", _(please_fsck));
 384         if (mount_flags & EXT2_MF_READONLY)
 385                 printf("%s", _("(and reboot afterwards!)\n"));
 386 }
 387
 388 /*
 389  * Update the feature set as provided by the user.
 390  */
 391 static int update_feature_set(ext2_filsys fs, char *features)
 392 {
 393         struct ext2_super_block *sb = fs->super;
 394         struct ext2_group_desc *gd;
 395         __u32           old_features[3];
 396         dgrp_t          i;
 397         int             type_err;
 398         unsigned int    mask_err;
 399
 400 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 401                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 402 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 403                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 404 #define FEATURE_CHANGED(type, mask) ((mask) & \
 405                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 406
 407         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 408         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 409         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 410
 411         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 412                               ok_features, clear_ok_features,
 413                               &type_err, &mask_err)) {
 414                 if (!mask_err)
 415                         fprintf(stderr,
 416                                 _("Invalid filesystem option set: %s\n"),
 417                                 features);
 418                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 419                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 420                                           "not supported.\n"),
 421                                 e2p_feature2string(type_err &
 422                                                    E2P_FEATURE_TYPE_MASK,
 423                                                    mask_err));
 424                 else
 425                         fprintf(stderr, _("Setting filesystem feature '%s' "
 426                                           "not supported.\n"),
 427                                 e2p_feature2string(type_err, mask_err));
 428                 return 1;
 429         }
 430
 431         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 432                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 433                     !(mount_flags & EXT2_MF_READONLY)) {
 434                         fputs(_("The has_journal feature may only be "
 435                                 "cleared when the filesystem is\n"
 436                                 "unmounted or mounted "
 437                                 "read-only.\n"), stderr);
 438                         return 1;
 439                 }
 440                 if (sb->s_feature_incompat &
 441                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 442                         fputs(_("The needs_recovery flag is set.  "
 443                                 "Please run e2fsck before clearing\n"
 444                                 "the has_journal flag.\n"), stderr);
 445                         return 1;
 446                 }
 447                 if (sb->s_journal_inum) {
 448                         if (remove_journal_inode(fs))
 449                                 return 1;
 450                 }
 451                 if (sb->s_journal_dev) {
 452                         if (remove_journal_device(fs))
 453                                 return 1;
 454                 }
 455         }
 456
 457         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 458                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
 459                 if (sb->s_feature_incompat &
 460                         EXT2_FEATURE_INCOMPAT_META_BG) {
 461                         fputs(_("Setting filesystem feature 'sparse_super' "
 462                                 "not supported\nfor filesystems with "
 463                                 "the meta_bg feature enabled.\n"),
 464                                 stderr);
 465                         return 1;
 466                 }
 467         }
 468
 469         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 470                 int error;
 471
 472                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 473                     (mount_flags & EXT2_MF_READONLY)) {
 474                         fputs(_("The multiple mount protection feature can't\n"
 475                                 "be set if the filesystem is mounted or\n"
 476                                 "read-only.\n"), stderr);
 477                         return 1;
 478                 }
 479
 480                 error = ext2fs_mmp_init(fs);
 481                 if (error) {
 482                         fputs(_("\nError while enabling multiple mount "
 483                                 "protection feature."), stderr);
 484                         return 1;
 485                 }
 486
 487                 /*
 488                  * We want to update group desc with the new free blocks count
 489                  */
 490                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 491
 492                 printf(_("Multiple mount protection has been enabled "
 493                          "with update interval %ds.\n"),
 494                        sb->s_mmp_update_interval);
 495         }
 496
 497         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 498                 int error;
 499
 500                 if (mount_flags & EXT2_MF_READONLY) {
 501                         fputs(_("The multiple mount protection feature cannot\n"
 502                                 "be disabled if the filesystem is readonly.\n"),
 503                                 stderr);
 504                         return 1;
 505                 }
 506
 507                 error = ext2fs_read_bitmaps(fs);
 508                 if (error) {
 509                         fputs(_("Error while reading bitmaps\n"), stderr);
 510                         return 1;
 511                 }
 512
 513                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 514                 if (error) {
 515                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 516
 517                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 518                                 printf(_("Magic number in MMP block does not "
 519                                          "match. expected: %x, actual: %x\n"),
 520                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 521                         else
 522                                 com_err(program_name, error, "%s",
 523                                         _("while reading MMP block."));
 524                         goto mmp_error;
 525                 }
 526
 527                 /* We need to force out the group descriptors as well */
 528                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 529                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
 530 mmp_error:
 531                 sb->s_mmp_block = 0;
 532                 sb->s_mmp_update_interval = 0;
 533         }
 534
 535         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 536                 /*
 537                  * If adding a journal flag, let the create journal
 538                  * code below handle setting the flag and creating the
 539                  * journal.  We supply a default size if necessary.
 540                  */
 541                 if (!journal_size)
 542                         journal_size = -1;
 543                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 544         }
 545
 546         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 547                 if (!sb->s_def_hash_version)
 548                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 549                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 550                         uuid_generate((unsigned char *) sb->s_hash_seed);
 551         }
 552
 553         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 554                 if (ext2fs_check_desc(fs)) {
 555                         fputs(_("Clearing the flex_bg flag would "
 556                                 "cause the the filesystem to be\n"
 557                                 "inconsistent.\n"), stderr);
 558                         return 1;
 559                 }
 560         }
 561
 562         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 563                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 564                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 565                     !(mount_flags & EXT2_MF_READONLY)) {
 566                         fputs(_("The huge_file feature may only be "
 567                                 "cleared when the filesystem is\n"
 568                                 "unmounted or mounted "
 569                                 "read-only.\n"), stderr);
 570                         return 1;
 571                 }
 572         }
 573
 574         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 575                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 576                 for (i = 0; i < fs->group_desc_count; i++) {
 577                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 578                         gd->bg_itable_unused = 0;
 579                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 580                         ext2fs_group_desc_csum_set(fs, i);
 581                 }
 582                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 583         }
 584
 585         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 586                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 587                 for (i = 0; i < fs->group_desc_count; i++) {
 588                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 589                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 590                                 /*
 591                                  * XXX what we really should do is zap
 592                                  * uninitialized inode tables instead.
 593                                  */
 594                                 request_fsck_afterwards(fs);
 595                                 break;
 596                         }
 597                         gd->bg_itable_unused = 0;
 598                         gd->bg_flags = 0;
 599                         gd->bg_checksum = 0;
 600                 }
 601                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 602         }
 603
 604         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 605                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 606                 /*
 607                  * Set the Q_flag here and handle the quota options in the code
 608                  * below.
 609                  */
 610                 if (!Q_flag) {
 611                         Q_flag = 1;
 612                         /* Enable both user quota and group quota by default */
 613                         usrquota = QOPT_ENABLE;
 614                         grpquota = QOPT_ENABLE;
 615                 }
 616                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 617         }
 618
 619         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 620                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 621                 /*
 622                  * Set the Q_flag here and handle the quota options in the code
 623                  * below.
 624                  */
 625                 if (Q_flag)
 626                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 627                                 "arguments.\n"), stderr);
 628                 Q_flag = 1;
 629                 /* Disable both user quota and group quota by default */
 630                 usrquota = QOPT_DISABLE;
 631                 grpquota = QOPT_DISABLE;
 632         }
 633
 634         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 635             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 636              sb->s_feature_incompat))
 637                 ext2fs_update_dynamic_rev(fs);
 638
 639         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 640                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 641             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 642                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 643             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 644                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 645             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 646                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 647             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 648                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 649                 request_fsck_afterwards(fs);
 650
 651         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 652             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 653             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 654                 ext2fs_mark_super_dirty(fs);
 655
 656         return 0;
 657 }
 658
 659 /*
 660  * Add a journal to the filesystem.
 661  */
 662 static int add_journal(ext2_filsys fs)
 663 {
 664         unsigned long journal_blocks;
 665         errcode_t       retval;
 666         ext2_filsys     jfs;
 667         io_manager      io_ptr;
 668
 669         if (fs->super->s_feature_compat &
 670             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 671                 fputs(_("The filesystem already has a journal.\n"), stderr);
 672                 goto err;
 673         }
 674         if (journal_device) {
 675                 check_plausibility(journal_device);
 676                 check_mount(journal_device, 0, _("journal"));
 677 #ifdef CONFIG_TESTIO_DEBUG
 678                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 679                         io_ptr = test_io_manager;
 680                         test_io_backing_manager = unix_io_manager;
 681                 } else
 682 #endif
 683                         io_ptr = unix_io_manager;
 684                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 685                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 686                                      fs->blocksize, io_ptr, &jfs);
 687                 if (retval) {
 688                         com_err(program_name, retval,
 689                                 _("\n\twhile trying to open journal on %s\n"),
 690                                 journal_device);
 691                         goto err;
 692                 }
 693                 printf(_("Creating journal on device %s: "),
 694                        journal_device);
 695                 fflush(stdout);
 696
 697                 retval = ext2fs_add_journal_device(fs, jfs);
 698                 ext2fs_close(jfs);
 699                 if (retval) {
 700                         com_err(program_name, retval,
 701                                 _("while adding filesystem to journal on %s"),
 702                                 journal_device);
 703                         goto err;
 704                 }
 705                 fputs(_("done\n"), stdout);
 706         } else if (journal_size) {
 707                 fputs(_("Creating journal inode: "), stdout);
 708                 fflush(stdout);
 709                 journal_blocks = figure_journal_size(journal_size, fs);
 710
 711                 if (journal_location_string)
 712                         journal_location =
 713                                 parse_num_blocks2(journal_location_string,
 714                                                   fs->super->s_log_block_size);
 715                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
 716                                                    journal_location,
 717                                                    journal_flags);
 718                 if (retval) {
 719                         fprintf(stderr, "\n");
 720                         com_err(program_name, retval, "%s",
 721                                 _("\n\twhile trying to create journal file"));
 722                         return retval;
 723                 } else
 724                         fputs(_("done\n"), stdout);
 725                 /*
 726                  * If the filesystem wasn't mounted, we need to force
 727                  * the block group descriptors out.
 728                  */
 729                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 730                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 731         }
 732         print_check_message(fs->super->s_max_mnt_count,
 733                             fs->super->s_checkinterval);
 734         return 0;
 735
 736 err:
 737         free(journal_device);
 738         return 1;
 739 }
 740
 741 static void handle_quota_options(ext2_filsys fs)
 742 {
 743         quota_ctx_t qctx;
 744         ext2_ino_t qf_ino;
 745
 746         if (!usrquota && !grpquota)
 747                 /* Nothing to do. */
 748                 return;
 749
 750         quota_init_context(&qctx, fs, -1);
 751
 752         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
 753                 quota_compute_usage(qctx);
 754
 755         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 756                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
 757                                                 QFMT_VFS_V1)) > 0)
 758                         quota_update_limits(qctx, qf_ino, USRQUOTA);
 759                 quota_write_inode(qctx, USRQUOTA);
 760         } else if (usrquota == QOPT_DISABLE) {
 761                 quota_remove_inode(fs, USRQUOTA);
 762         }
 763
 764         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 765                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
 766                                                 QFMT_VFS_V1)) > 0)
 767                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
 768                 quota_write_inode(qctx, GRPQUOTA);
 769         } else if (grpquota == QOPT_DISABLE) {
 770                 quota_remove_inode(fs, GRPQUOTA);
 771         }
 772
 773         quota_release_context(&qctx);
 774
 775         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 776                 fprintf(stderr, "%s", _("\nWarning: the quota feature is still "
 777                                   "under development\n"
 778                                   "See https://ext4.wiki.kernel.org/"
 779                                   "index.php/Quota for more information\n\n"));
 780                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 781                 ext2fs_mark_super_dirty(fs);
 782         } else if (!fs->super->s_usr_quota_inum &&
 783                    !fs->super->s_grp_quota_inum) {
 784                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 785                 ext2fs_mark_super_dirty(fs);
 786         }
 787
 788         return;
 789 }
 790
 791 #ifdef CONFIG_QUOTA
 792 static void parse_quota_opts(const char *opts)
 793 {
 794         char    *buf, *token, *next, *p;
 795         int     len;
 796
 797         len = strlen(opts);
 798         buf = malloc(len+1);
 799         if (!buf) {
 800                 fputs(_("Couldn't allocate memory to parse quota "
 801                         "options!\n"), stderr);
 802                 exit(1);
 803         }
 804         strcpy(buf, opts);
 805         for (token = buf; token && *token; token = next) {
 806                 p = strchr(token, ',');
 807                 next = 0;
 808                 if (p) {
 809                         *p = 0;
 810                         next = p+1;
 811                 }
 812
 813                 if (strcmp(token, "usrquota") == 0) {
 814                         usrquota = QOPT_ENABLE;
 815                 } else if (strcmp(token, "^usrquota") == 0) {
 816                         usrquota = QOPT_DISABLE;
 817                 } else if (strcmp(token, "grpquota") == 0) {
 818                         grpquota = QOPT_ENABLE;
 819                 } else if (strcmp(token, "^grpquota") == 0) {
 820                         grpquota = QOPT_DISABLE;
 821                 } else {
 822                         fputs(_("\nBad quota options specified.\n\n"
 823                                 "Following valid quota options are available "
 824                                 "(pass by separating with comma):\n"
 825                                 "\t[^]usrquota\n"
 826                                 "\t[^]grpquota\n"
 827                                 "\n\n"), stderr);
 828                         free(buf);
 829                         exit(1);
 830                 }
 831         }
 832         free(buf);
 833 }
 834 #endif
 835
 836 static void parse_e2label_options(int argc, char ** argv)
 837 {
 838         if ((argc < 2) || (argc > 3)) {
 839                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 840                 exit(1);
 841         }
 842         io_options = strchr(argv[1], '?');
 843         if (io_options)
 844                 *io_options++ = 0;
 845         device_name = blkid_get_devname(NULL, argv[1], NULL);
 846         if (!device_name) {
 847                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 848                         argv[1]);
 849                 exit(1);
 850         }
 851         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 852         if (argc == 3) {
 853                 open_flag |= EXT2_FLAG_RW;
 854                 L_flag = 1;
 855                 new_label = argv[2];
 856         } else
 857                 print_label++;
 858 }
 859
 860 static time_t parse_time(char *str)
 861 {
 862         struct  tm      ts;
 863
 864         if (strcmp(str, "now") == 0) {
 865                 return (time(0));
 866         }
 867         memset(&ts, 0, sizeof(ts));
 868 #ifdef HAVE_STRPTIME
 869         strptime(str, "%Y%m%d%H%M%S", &ts);
 870 #else
 871         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 872                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 873         ts.tm_year -= 1900;
 874         ts.tm_mon -= 1;
 875         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 876             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 877             ts.tm_min > 59 || ts.tm_sec > 61)
 878                 ts.tm_mday = 0;
 879 #endif
 880         if (ts.tm_mday == 0) {
 881                 com_err(program_name, 0,
 882                         _("Couldn't parse date/time specifier: %s"),
 883                         str);
 884                 usage();
 885         }
 886         ts.tm_isdst = -1;
 887         return (mktime(&ts));
 888 }
 889
 890 static void parse_tune2fs_options(int argc, char **argv)
 891 {
 892         int c;
 893         char *tmp;
 894         struct group *gr;
 895         struct passwd *pw;
 896         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:";
 897
 898 #ifdef CONFIG_QUOTA
 899         strcat(optstring, "Q:");
 900 #endif
 901         open_flag = 0;
 902
 903         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 904         while ((c = getopt(argc, argv, optstring)) != EOF)
 905                 switch (c) {
 906                 case 'c':
 907                         max_mount_count = strtol(optarg, &tmp, 0);
 908                         if (*tmp || max_mount_count > 16000) {
 909                                 com_err(program_name, 0,
 910                                         _("bad mounts count - %s"),
 911                                         optarg);
 912                                 usage();
 913                         }
 914                         if (max_mount_count == 0)
 915                                 max_mount_count = -1;
 916                         c_flag = 1;
 917                         open_flag = EXT2_FLAG_RW;
 918                         break;
 919                 case 'C':
 920                         mount_count = strtoul(optarg, &tmp, 0);
 921                         if (*tmp || mount_count > 16000) {
 922                                 com_err(program_name, 0,
 923                                         _("bad mounts count - %s"),
 924                                         optarg);
 925                                 usage();
 926                         }
 927                         C_flag = 1;
 928                         open_flag = EXT2_FLAG_RW;
 929                         break;
 930                 case 'e':
 931                         if (strcmp(optarg, "continue") == 0)
 932                                 errors = EXT2_ERRORS_CONTINUE;
 933                         else if (strcmp(optarg, "remount-ro") == 0)
 934                                 errors = EXT2_ERRORS_RO;
 935                         else if (strcmp(optarg, "panic") == 0)
 936                                 errors = EXT2_ERRORS_PANIC;
 937                         else {
 938                                 com_err(program_name, 0,
 939                                         _("bad error behavior - %s"),
 940                                         optarg);
 941                                 usage();
 942                         }
 943                         e_flag = 1;
 944                         open_flag = EXT2_FLAG_RW;
 945                         break;
 946                 case 'E':
 947                         extended_cmd = optarg;
 948                         open_flag |= EXT2_FLAG_RW;
 949                         break;
 950                 case 'f': /* Force */
 951                         f_flag = 1;
 952                         break;
 953                 case 'g':
 954                         resgid = strtoul(optarg, &tmp, 0);
 955                         if (*tmp) {
 956                                 gr = getgrnam(optarg);
 957                                 if (gr == NULL)
 958                                         tmp = optarg;
 959                                 else {
 960                                         resgid = gr->gr_gid;
 961                                         *tmp = 0;
 962                                 }
 963                         }
 964                         if (*tmp) {
 965                                 com_err(program_name, 0,
 966                                         _("bad gid/group name - %s"),
 967                                         optarg);
 968                                 usage();
 969                         }
 970                         g_flag = 1;
 971                         open_flag = EXT2_FLAG_RW;
 972                         break;
 973                 case 'i':
 974                         interval = strtoul(optarg, &tmp, 0);
 975                         switch (*tmp) {
 976                         case 's':
 977                                 tmp++;
 978                                 break;
 979                         case '\0':
 980                         case 'd':
 981                         case 'D': /* days */
 982                                 interval *= 86400;
 983                                 if (*tmp != '\0')
 984                                         tmp++;
 985                                 break;
 986                         case 'm':
 987                         case 'M': /* months! */
 988                                 interval *= 86400 * 30;
 989                                 tmp++;
 990                                 break;
 991                         case 'w':
 992                         case 'W': /* weeks */
 993                                 interval *= 86400 * 7;
 994                                 tmp++;
 995                                 break;
 996                         }
 997                         if (*tmp) {
 998                                 com_err(program_name, 0,
 999                                         _("bad interval - %s"), optarg);
1000                                 usage();
1001                         }
1002                         i_flag = 1;
1003                         open_flag = EXT2_FLAG_RW;
1004                         break;
1005                 case 'j':
1006                         if (!journal_size)
1007                                 journal_size = -1;
1008                         open_flag = EXT2_FLAG_RW;
1009                         break;
1010                 case 'J':
1011                         parse_journal_opts(optarg);
1012                         open_flag = EXT2_FLAG_RW;
1013                         break;
1014                 case 'l':
1015                         l_flag = 1;
1016                         break;
1017                 case 'L':
1018                         new_label = optarg;
1019                         L_flag = 1;
1020                         open_flag |= EXT2_FLAG_RW |
1021                                 EXT2_FLAG_JOURNAL_DEV_OK;
1022                         break;
1023                 case 'm':
1024                         reserved_ratio = strtod(optarg, &tmp);
1025                         if (*tmp || reserved_ratio > 50 ||
1026                             reserved_ratio < 0) {
1027                                 com_err(program_name, 0,
1028                                         _("bad reserved block ratio - %s"),
1029                                         optarg);
1030                                 usage();
1031                         }
1032                         m_flag = 1;
1033                         open_flag = EXT2_FLAG_RW;
1034                         break;
1035                 case 'M':
1036                         new_last_mounted = optarg;
1037                         M_flag = 1;
1038                         open_flag = EXT2_FLAG_RW;
1039                         break;
1040                 case 'o':
1041                         if (mntopts_cmd) {
1042                                 com_err(program_name, 0, "%s",
1043                                         _("-o may only be specified once"));
1044                                 usage();
1045                         }
1046                         mntopts_cmd = optarg;
1047                         open_flag = EXT2_FLAG_RW;
1048                         break;
1049                 case 'O':
1050                         if (features_cmd) {
1051                                 com_err(program_name, 0, "%s",
1052                                         _("-O may only be specified once"));
1053                                 usage();
1054                         }
1055                         features_cmd = optarg;
1056                         open_flag = EXT2_FLAG_RW;
1057                         break;
1058 #ifdef CONFIG_QUOTA
1059                 case 'Q':
1060                         Q_flag = 1;
1061                         parse_quota_opts(optarg);
1062                         open_flag = EXT2_FLAG_RW;
1063                         break;
1064 #endif
1065                 case 'r':
1066                         reserved_blocks = strtoul(optarg, &tmp, 0);
1067                         if (*tmp) {
1068                                 com_err(program_name, 0,
1069                                         _("bad reserved blocks count - %s"),
1070                                         optarg);
1071                                 usage();
1072                         }
1073                         r_flag = 1;
1074                         open_flag = EXT2_FLAG_RW;
1075                         break;
1076                 case 's': /* Deprecated */
1077                         s_flag = atoi(optarg);
1078                         open_flag = EXT2_FLAG_RW;
1079                         break;
1080                 case 'T':
1081                         T_flag = 1;
1082                         last_check_time = parse_time(optarg);
1083                         open_flag = EXT2_FLAG_RW;
1084                         break;
1085                 case 'u':
1086                                 resuid = strtoul(optarg, &tmp, 0);
1087                                 if (*tmp) {
1088                                         pw = getpwnam(optarg);
1089                                         if (pw == NULL)
1090                                                 tmp = optarg;
1091                                         else {
1092                                                 resuid = pw->pw_uid;
1093                                                 *tmp = 0;
1094                                         }
1095                                 }
1096                                 if (*tmp) {
1097                                         com_err(program_name, 0,
1098                                                 _("bad uid/user name - %s"),
1099                                                 optarg);
1100                                         usage();
1101                                 }
1102                                 u_flag = 1;
1103                                 open_flag = EXT2_FLAG_RW;
1104                                 break;
1105                 case 'U':
1106                         new_UUID = optarg;
1107                         U_flag = 1;
1108                         open_flag = EXT2_FLAG_RW |
1109                                 EXT2_FLAG_JOURNAL_DEV_OK;
1110                         break;
1111                 case 'I':
1112                         new_inode_size = strtoul(optarg, &tmp, 0);
1113                         if (*tmp) {
1114                                 com_err(program_name, 0,
1115                                         _("bad inode size - %s"),
1116                                         optarg);
1117                                 usage();
1118                         }
1119                         if (!((new_inode_size &
1120                                (new_inode_size - 1)) == 0)) {
1121                                 com_err(program_name, 0,
1122                                         _("Inode size must be a "
1123                                           "power of two- %s"),
1124                                         optarg);
1125                                 usage();
1126                         }
1127                         open_flag = EXT2_FLAG_RW;
1128                         I_flag = 1;
1129                         break;
1130                 default:
1131                         usage();
1132                 }
1133         if (optind < argc - 1 || optind == argc)
1134                 usage();
1135         if (!open_flag && !l_flag)
1136                 usage();
1137         io_options = strchr(argv[optind], '?');
1138         if (io_options)
1139                 *io_options++ = 0;
1140         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1141         if (!device_name) {
1142                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1143                         argv[optind]);
1144                 exit(1);
1145         }
1146 }
1147
1148 #ifdef CONFIG_BUILD_FINDFS
1149 void do_findfs(int argc, char **argv)
1150 {
1151         char    *dev;
1152
1153         if ((argc != 2) ||
1154             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1155                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1156                 exit(2);
1157         }
1158         dev = blkid_get_devname(NULL, argv[1], NULL);
1159         if (!dev) {
1160                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1161                         argv[1]);
1162                 exit(1);
1163         }
1164         puts(dev);
1165         exit(0);
1166 }
1167 #endif
1168
1169 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1170 {
1171         char    *buf, *token, *next, *p, *arg;
1172         int     len, hash_alg;
1173         int     r_usage = 0;
1174
1175         len = strlen(opts);
1176         buf = malloc(len+1);
1177         if (!buf) {
1178                 fprintf(stderr, "%s",
1179                         _("Couldn't allocate memory to parse options!\n"));
1180                 return 1;
1181         }
1182         strcpy(buf, opts);
1183         for (token = buf; token && *token; token = next) {
1184                 p = strchr(token, ',');
1185                 next = 0;
1186                 if (p) {
1187                         *p = 0;
1188                         next = p+1;
1189                 }
1190                 arg = strchr(token, '=');
1191                 if (arg) {
1192                         *arg = 0;
1193                         arg++;
1194                 }
1195                 if (strcmp(token, "clear-mmp") == 0 ||
1196                     strcmp(token, "clear_mmp") == 0) {
1197                         clear_mmp = 1;
1198                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1199                         unsigned long intv;
1200                         if (!arg) {
1201                                 r_usage++;
1202                                 continue;
1203                         }
1204                         intv = strtoul(arg, &p, 0);
1205                         if (*p) {
1206                                 fprintf(stderr,
1207                                         _("Invalid mmp_update_interval: %s\n"),
1208                                         arg);
1209                                 r_usage++;
1210                                 continue;
1211                         }
1212                         if (intv == 0) {
1213                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1214                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1215                                 fprintf(stderr,
1216                                         _("mmp_update_interval too big: %lu\n"),
1217                                         intv);
1218                                 r_usage++;
1219                                 continue;
1220                         }
1221                         printf(P_("Setting multiple mount protection update "
1222                                   "interval to %lu second\n",
1223                                   "Setting multiple mount protection update "
1224                                   "interval to %lu seconds\n", intv),
1225                                intv);
1226                         fs->super->s_mmp_update_interval = intv;
1227                         ext2fs_mark_super_dirty(fs);
1228                 } else if (!strcmp(token, "test_fs")) {
1229                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1230                         printf("Setting test filesystem flag\n");
1231                         ext2fs_mark_super_dirty(fs);
1232                 } else if (!strcmp(token, "^test_fs")) {
1233                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1234                         printf("Clearing test filesystem flag\n");
1235                         ext2fs_mark_super_dirty(fs);
1236                 } else if (strcmp(token, "stride") == 0) {
1237                         if (!arg) {
1238                                 r_usage++;
1239                                 continue;
1240                         }
1241                         stride = strtoul(arg, &p, 0);
1242                         if (*p) {
1243                                 fprintf(stderr,
1244                                         _("Invalid RAID stride: %s\n"),
1245                                         arg);
1246                                 r_usage++;
1247                                 continue;
1248                         }
1249                         stride_set = 1;
1250                 } else if (strcmp(token, "stripe-width") == 0 ||
1251                            strcmp(token, "stripe_width") == 0) {
1252                         if (!arg) {
1253                                 r_usage++;
1254                                 continue;
1255                         }
1256                         stripe_width = strtoul(arg, &p, 0);
1257                         if (*p) {
1258                                 fprintf(stderr,
1259                                         _("Invalid RAID stripe-width: %s\n"),
1260                                         arg);
1261                                 r_usage++;
1262                                 continue;
1263                         }
1264                         stripe_width_set = 1;
1265                 } else if (strcmp(token, "hash_alg") == 0 ||
1266                            strcmp(token, "hash-alg") == 0) {
1267                         if (!arg) {
1268                                 r_usage++;
1269                                 continue;
1270                         }
1271                         hash_alg = e2p_string2hash(arg);
1272                         if (hash_alg < 0) {
1273                                 fprintf(stderr,
1274                                         _("Invalid hash algorithm: %s\n"),
1275                                         arg);
1276                                 r_usage++;
1277                                 continue;
1278                         }
1279                         fs->super->s_def_hash_version = hash_alg;
1280                         printf(_("Setting default hash algorithm "
1281                                  "to %s (%d)\n"),
1282                                arg, hash_alg);
1283                         ext2fs_mark_super_dirty(fs);
1284                 } else if (!strcmp(token, "mount_opts")) {
1285                         if (!arg) {
1286                                 r_usage++;
1287                                 continue;
1288                         }
1289                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1290                                 fprintf(stderr,
1291                                         "Extended mount options too long\n");
1292                                 continue;
1293                         }
1294                         ext_mount_opts = strdup(arg);
1295                 } else
1296                         r_usage++;
1297         }
1298         if (r_usage) {
1299                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1300                         "Extended options are separated by commas, "
1301                         "and may take an argument which\n"
1302                         "\tis set off by an equals ('=') sign.\n\n"
1303                         "Valid extended options are:\n"
1304                         "\tclear_mmp\n"
1305                         "\thash_alg=<hash algorithm>\n"
1306                         "\tmount_opts=<extended default mount options>\n"
1307                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1308                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1309                         "\ttest_fs\n"
1310                         "\t^test_fs\n"));
1311                 free(buf);
1312                 return 1;
1313         }
1314         free(buf);
1315
1316         return 0;
1317 }
1318
1319 /*
1320  * Fill in the block bitmap bmap with the information regarding the
1321  * blocks to be moved
1322  */
1323 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1324                             ext2fs_block_bitmap bmap)
1325 {
1326         dgrp_t i;
1327         int retval;
1328         ext2_badblocks_list bb_list = 0;
1329         blk64_t j, needed_blocks = 0;
1330         blk64_t start_blk, end_blk;
1331
1332         retval = ext2fs_read_bb_inode(fs, &bb_list);
1333         if (retval)
1334                 return retval;
1335
1336         for (i = 0; i < fs->group_desc_count; i++) {
1337                 start_blk = ext2fs_inode_table_loc(fs, i) +
1338                                         fs->inode_blocks_per_group;
1339
1340                 end_blk = ext2fs_inode_table_loc(fs, i) +
1341                                         new_ino_blks_per_grp;
1342
1343                 for (j = start_blk; j < end_blk; j++) {
1344                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1345                                 /*
1346                                  * IF the block is a bad block we fail
1347                                  */
1348                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1349                                         ext2fs_badblocks_list_free(bb_list);
1350                                         return ENOSPC;
1351                                 }
1352
1353                                 ext2fs_mark_block_bitmap2(bmap, j);
1354                         } else {
1355                                 /*
1356                                  * We are going to use this block for
1357                                  * inode table. So mark them used.
1358                                  */
1359                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1360                         }
1361                 }
1362                 needed_blocks += end_blk - start_blk;
1363         }
1364
1365         ext2fs_badblocks_list_free(bb_list);
1366         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1367                 return ENOSPC;
1368
1369         return 0;
1370 }
1371
1372 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
1373 {
1374         dgrp_t group;
1375         group = ext2fs_group_of_blk2(fs, blk);
1376         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1377                 return 1;
1378         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1379                 return 1;
1380         return 0;
1381 }
1382
1383 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
1384 {
1385         blk64_t start_blk, end_blk;
1386         start_blk = fs->super->s_first_data_block +
1387                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1388         /*
1389          * We cannot get new block beyond end_blk for for the last block group
1390          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1391          */
1392         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1393         if (blk >= start_blk && blk <= end_blk)
1394                 return 1;
1395         return 0;
1396 }
1397
1398 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1399 {
1400
1401         char *buf;
1402         dgrp_t group = 0;
1403         errcode_t retval;
1404         int meta_data = 0;
1405         blk64_t blk, new_blk, goal;
1406         struct blk_move *bmv;
1407
1408         retval = ext2fs_get_mem(fs->blocksize, &buf);
1409         if (retval)
1410                 return retval;
1411
1412         for (new_blk = blk = fs->super->s_first_data_block;
1413              blk < ext2fs_blocks_count(fs->super); blk++) {
1414                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1415                         continue;
1416
1417                 if (ext2fs_is_meta_block(fs, blk)) {
1418                         /*
1419                          * If the block is mapping a fs meta data block
1420                          * like group desc/block bitmap/inode bitmap. We
1421                          * should find a block in the same group and fix
1422                          * the respective fs metadata pointers. Otherwise
1423                          * fail
1424                          */
1425                         group = ext2fs_group_of_blk2(fs, blk);
1426                         goal = ext2fs_group_first_block2(fs, group);
1427                         meta_data = 1;
1428
1429                 } else {
1430                         goal = new_blk;
1431                 }
1432                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1433                 if (retval)
1434                         goto err_out;
1435
1436                 /* new fs meta data block should be in the same group */
1437                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1438                         retval = ENOSPC;
1439                         goto err_out;
1440                 }
1441
1442                 /* Mark this block as allocated */
1443                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1444
1445                 /* Add it to block move list */
1446                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1447                 if (retval)
1448                         goto err_out;
1449
1450                 bmv->old_loc = blk;
1451                 bmv->new_loc = new_blk;
1452
1453                 list_add(&(bmv->list), &blk_move_list);
1454
1455                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1456                 if (retval)
1457                         goto err_out;
1458
1459                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1460                 if (retval)
1461                         goto err_out;
1462         }
1463
1464 err_out:
1465         ext2fs_free_mem(&buf);
1466         return retval;
1467 }
1468
1469 static blk64_t translate_block(blk64_t blk)
1470 {
1471         struct list_head *entry;
1472         struct blk_move *bmv;
1473
1474         list_for_each(entry, &blk_move_list) {
1475                 bmv = list_entry(entry, struct blk_move, list);
1476                 if (bmv->old_loc == blk)
1477                         return bmv->new_loc;
1478         }
1479
1480         return 0;
1481 }
1482
1483 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1484                          blk64_t *block_nr,
1485                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1486                          blk64_t ref_block EXT2FS_ATTR((unused)),
1487                          int ref_offset EXT2FS_ATTR((unused)),
1488                          void *priv_data)
1489 {
1490         int ret = 0;
1491         blk64_t new_blk;
1492         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1493
1494         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1495                 return 0;
1496         new_blk = translate_block(*block_nr);
1497         if (new_blk) {
1498                 *block_nr = new_blk;
1499                 /*
1500                  * This will force the ext2fs_write_inode in the iterator
1501                  */
1502                 ret |= BLOCK_CHANGED;
1503         }
1504
1505         return ret;
1506 }
1507
1508 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1509 {
1510         errcode_t retval = 0;
1511         ext2_ino_t ino;
1512         blk64_t blk;
1513         char *block_buf = 0;
1514         struct ext2_inode inode;
1515         ext2_inode_scan scan = NULL;
1516
1517         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1518         if (retval)
1519                 return retval;
1520
1521         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1522         if (retval)
1523                 goto err_out;
1524
1525         while (1) {
1526                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1527                 if (retval)
1528                         goto err_out;
1529
1530                 if (!ino)
1531                         break;
1532
1533                 if (inode.i_links_count == 0)
1534                         continue; /* inode not in use */
1535
1536                 /* FIXME!!
1537                  * If we end up modifying the journal inode
1538                  * the sb->s_jnl_blocks will differ. But a
1539                  * subsequent e2fsck fixes that.
1540                  * Do we need to fix this ??
1541                  */
1542
1543                 if (ext2fs_file_acl_block(fs, &inode) &&
1544                     ext2fs_test_block_bitmap2(bmap,
1545                                         ext2fs_file_acl_block(fs, &inode))) {
1546                         blk = translate_block(ext2fs_file_acl_block(fs,
1547                                                                     &inode));
1548                         if (!blk)
1549                                 continue;
1550
1551                         ext2fs_file_acl_block_set(fs, &inode, blk);
1552
1553                         /*
1554                          * Write the inode to disk so that inode table
1555                          * resizing can work
1556                          */
1557                         retval = ext2fs_write_inode(fs, ino, &inode);
1558                         if (retval)
1559                                 goto err_out;
1560                 }
1561
1562                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
1563                         continue;
1564
1565                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1566                                                process_block, bmap);
1567                 if (retval)
1568                         goto err_out;
1569
1570         }
1571
1572 err_out:
1573         ext2fs_free_mem(&block_buf);
1574
1575         return retval;
1576 }
1577
1578 /*
1579  * We need to scan for inode and block bitmaps that may need to be
1580  * moved.  This can take place if the filesystem was formatted for
1581  * RAID arrays using the mke2fs's extended option "stride".
1582  */
1583 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1584 {
1585         dgrp_t i;
1586         blk64_t blk, new_blk;
1587
1588         for (i = 0; i < fs->group_desc_count; i++) {
1589                 blk = ext2fs_block_bitmap_loc(fs, i);
1590                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1591                         new_blk = translate_block(blk);
1592                         if (!new_blk)
1593                                 continue;
1594                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1595                 }
1596
1597                 blk = ext2fs_inode_bitmap_loc(fs, i);
1598                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1599                         new_blk = translate_block(blk);
1600                         if (!new_blk)
1601                                 continue;
1602                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1603                 }
1604         }
1605         return 0;
1606 }
1607
1608 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1609 {
1610         dgrp_t i;
1611         blk64_t blk;
1612         errcode_t retval;
1613         int new_ino_blks_per_grp;
1614         unsigned int j;
1615         char *old_itable = NULL, *new_itable = NULL;
1616         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1617         unsigned long old_ino_size;
1618         int old_itable_size, new_itable_size;
1619
1620         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1621         old_ino_size = EXT2_INODE_SIZE(fs->super);
1622
1623         new_ino_blks_per_grp = ext2fs_div_ceil(
1624                                         EXT2_INODES_PER_GROUP(fs->super) *
1625                                         new_ino_size,
1626                                         fs->blocksize);
1627
1628         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1629
1630         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1631         if (retval)
1632                 return retval;
1633
1634         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1635         if (retval)
1636                 goto err_out;
1637
1638         tmp_old_itable = old_itable;
1639         tmp_new_itable = new_itable;
1640
1641         for (i = 0; i < fs->group_desc_count; i++) {
1642                 blk = ext2fs_inode_table_loc(fs, i);
1643                 retval = io_channel_read_blk64(fs->io, blk,
1644                                 fs->inode_blocks_per_group, old_itable);
1645                 if (retval)
1646                         goto err_out;
1647
1648                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1649                         memcpy(new_itable, old_itable, old_ino_size);
1650
1651                         memset(new_itable+old_ino_size, 0,
1652                                         new_ino_size - old_ino_size);
1653
1654                         new_itable += new_ino_size;
1655                         old_itable += old_ino_size;
1656                 }
1657
1658                 /* reset the pointer */
1659                 old_itable = tmp_old_itable;
1660                 new_itable = tmp_new_itable;
1661
1662                 retval = io_channel_write_blk64(fs->io, blk,
1663                                         new_ino_blks_per_grp, new_itable);
1664                 if (retval)
1665                         goto err_out;
1666         }
1667
1668         /* Update the meta data */
1669         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1670         fs->super->s_inode_size = new_ino_size;
1671
1672 err_out:
1673         if (old_itable)
1674                 ext2fs_free_mem(&old_itable);
1675
1676         if (new_itable)
1677                 ext2fs_free_mem(&new_itable);
1678
1679         return retval;
1680 }
1681
1682 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1683 {
1684         blk64_t         blk;
1685         ext2_ino_t      ino;
1686         unsigned int    group = 0;
1687         unsigned int    count = 0;
1688         int             total_free = 0;
1689         int             group_free = 0;
1690
1691         /*
1692          * First calculate the block statistics
1693          */
1694         for (blk = fs->super->s_first_data_block;
1695              blk < ext2fs_blocks_count(fs->super); blk++) {
1696                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1697                         group_free++;
1698                         total_free++;
1699                 }
1700                 count++;
1701                 if ((count == fs->super->s_blocks_per_group) ||
1702                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1703                         ext2fs_bg_free_blocks_count_set(fs, group++,
1704                                                         group_free);
1705                         count = 0;
1706                         group_free = 0;
1707                 }
1708         }
1709         total_free = EXT2FS_C2B(fs, total_free);
1710         ext2fs_free_blocks_count_set(fs->super, total_free);
1711
1712         /*
1713          * Next, calculate the inode statistics
1714          */
1715         group_free = 0;
1716         total_free = 0;
1717         count = 0;
1718         group = 0;
1719
1720         /* Protect loop from wrap-around if s_inodes_count maxed */
1721         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1722                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1723                         group_free++;
1724                         total_free++;
1725                 }
1726                 count++;
1727                 if ((count == fs->super->s_inodes_per_group) ||
1728                     (ino == fs->super->s_inodes_count)) {
1729                         ext2fs_bg_free_inodes_count_set(fs, group++,
1730                                                         group_free);
1731                         count = 0;
1732                         group_free = 0;
1733                 }
1734         }
1735         fs->super->s_free_inodes_count = total_free;
1736         ext2fs_mark_super_dirty(fs);
1737         return 0;
1738 }
1739
1740 #define list_for_each_safe(pos, pnext, head) \
1741         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1742              pos = pnext, pnext = pos->next)
1743
1744 static void free_blk_move_list(void)
1745 {
1746         struct list_head *entry, *tmp;
1747         struct blk_move *bmv;
1748
1749         list_for_each_safe(entry, tmp, &blk_move_list) {
1750                 bmv = list_entry(entry, struct blk_move, list);
1751                 list_del(entry);
1752                 ext2fs_free_mem(&bmv);
1753         }
1754         return;
1755 }
1756
1757 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1758 {
1759         errcode_t retval;
1760         int new_ino_blks_per_grp;
1761         ext2fs_block_bitmap bmap;
1762
1763         retval = ext2fs_read_inode_bitmap(fs);
1764         if (retval) {
1765                 fputs(_("Failed to read inode bitmap\n"), stderr);
1766                 return retval;
1767         }
1768         retval = ext2fs_read_block_bitmap(fs);
1769         if (retval) {
1770                 fputs(_("Failed to read block bitmap\n"), stderr);
1771                 return retval;
1772         }
1773         INIT_LIST_HEAD(&blk_move_list);
1774
1775
1776         new_ino_blks_per_grp = ext2fs_div_ceil(
1777                                         EXT2_INODES_PER_GROUP(fs->super)*
1778                                         new_size,
1779                                         fs->blocksize);
1780
1781         /* We may change the file system.
1782          * Mark the file system as invalid so that
1783          * the user is prompted to run fsck.
1784          */
1785         fs->super->s_state &= ~EXT2_VALID_FS;
1786
1787         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1788                                                 &bmap);
1789         if (retval) {
1790                 fputs(_("Failed to allocate block bitmap when "
1791                                 "increasing inode size\n"), stderr);
1792                 return retval;
1793         }
1794         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1795         if (retval) {
1796                 fputs(_("Not enough space to increase inode size \n"), stderr);
1797                 goto err_out;
1798         }
1799         retval = move_block(fs, bmap);
1800         if (retval) {
1801                 fputs(_("Failed to relocate blocks during inode resize \n"),
1802                       stderr);
1803                 goto err_out;
1804         }
1805         retval = inode_scan_and_fix(fs, bmap);
1806         if (retval)
1807                 goto err_out_undo;
1808
1809         retval = group_desc_scan_and_fix(fs, bmap);
1810         if (retval)
1811                 goto err_out_undo;
1812
1813         retval = expand_inode_table(fs, new_size);
1814         if (retval)
1815                 goto err_out_undo;
1816
1817         ext2fs_calculate_summary_stats(fs);
1818
1819         fs->super->s_state |= EXT2_VALID_FS;
1820         /* mark super block and block bitmap as dirty */
1821         ext2fs_mark_super_dirty(fs);
1822         ext2fs_mark_bb_dirty(fs);
1823
1824 err_out:
1825         free_blk_move_list();
1826         ext2fs_free_block_bitmap(bmap);
1827
1828         return retval;
1829
1830 err_out_undo:
1831         free_blk_move_list();
1832         ext2fs_free_block_bitmap(bmap);
1833         fputs(_("Error in resizing the inode size.\n"
1834                         "Run e2undo to undo the "
1835                         "file system changes. \n"), stderr);
1836
1837         return retval;
1838 }
1839
1840 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1841 {
1842         errcode_t retval = 0;
1843         const char *tdb_dir;
1844         char *tdb_file;
1845         char *dev_name, *tmp_name;
1846
1847 #if 0 /* FIXME!! */
1848         /*
1849          * Configuration via a conf file would be
1850          * nice
1851          */
1852         profile_get_string(profile, "scratch_files",
1853                                         "directory", 0, 0,
1854                                         &tdb_dir);
1855 #endif
1856         tmp_name = strdup(name);
1857         if (!tmp_name) {
1858         alloc_fn_fail:
1859                 com_err(program_name, ENOMEM, "%s",
1860                         _("Couldn't allocate memory for tdb filename\n"));
1861                 return ENOMEM;
1862         }
1863         dev_name = basename(tmp_name);
1864
1865         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1866         if (!tdb_dir)
1867                 tdb_dir = "/var/lib/e2fsprogs";
1868
1869         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1870             access(tdb_dir, W_OK))
1871                 return 0;
1872
1873         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1874         if (!tdb_file)
1875                 goto alloc_fn_fail;
1876         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1877
1878         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1879                 retval = errno;
1880                 com_err(program_name, retval,
1881                         _("while trying to delete %s"), tdb_file);
1882                 free(tdb_file);
1883                 return retval;
1884         }
1885
1886         set_undo_io_backing_manager(*io_ptr);
1887         *io_ptr = undo_io_manager;
1888         set_undo_io_backup_file(tdb_file);
1889         printf(_("To undo the tune2fs operation please run "
1890                  "the command\n    e2undo %s %s\n\n"),
1891                  tdb_file, name);
1892         free(tdb_file);
1893         free(tmp_name);
1894         return retval;
1895 }
1896
1897 int main(int argc, char **argv)
1898 {
1899         errcode_t retval;
1900         ext2_filsys fs;
1901         struct ext2_super_block *sb;
1902         io_manager io_ptr, io_ptr_orig = NULL;
1903         int rc = 0;
1904
1905 #ifdef ENABLE_NLS
1906         setlocale(LC_MESSAGES, "");
1907         setlocale(LC_CTYPE, "");
1908         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1909         textdomain(NLS_CAT_NAME);
1910         set_com_err_gettext(gettext);
1911 #endif
1912         if (argc && *argv)
1913                 program_name = *argv;
1914         add_error_table(&et_ext2_error_table);
1915
1916 #ifdef CONFIG_BUILD_FINDFS
1917         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1918                 do_findfs(argc, argv);
1919 #endif
1920         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1921                 parse_e2label_options(argc, argv);
1922         else
1923                 parse_tune2fs_options(argc, argv);
1924
1925 #ifdef CONFIG_TESTIO_DEBUG
1926         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1927                 io_ptr = test_io_manager;
1928                 test_io_backing_manager = unix_io_manager;
1929         } else
1930 #endif
1931                 io_ptr = unix_io_manager;
1932
1933 retry_open:
1934         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1935                 open_flag |= EXT2_FLAG_SKIP_MMP;
1936
1937         open_flag |= EXT2_FLAG_64BITS;
1938
1939         /* keep the filesystem struct around to dump MMP data */
1940         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1941
1942         retval = ext2fs_open2(device_name, io_options, open_flag,
1943                               0, 0, io_ptr, &fs);
1944         if (retval) {
1945                 com_err(program_name, retval,
1946                         _("while trying to open %s"),
1947                         device_name);
1948                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1949                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1950                         dump_mmp_msg(fs->mmp_buf,
1951                                      _("If you are sure the filesystem "
1952                                        "is not in use on any node, run:\n"
1953                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1954                 else if (retval == EXT2_ET_MMP_FAILED)
1955                         dump_mmp_msg(fs->mmp_buf, NULL);
1956                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1957                         fprintf(stderr,
1958                                 _("MMP block magic is bad. Try to fix it by "
1959                                   "running:\n'e2fsck -f %s'\n"), device_name);
1960                 else if (retval != EXT2_ET_MMP_FAILED)
1961                         fprintf(stderr, "%s",
1962                              _("Couldn't find valid filesystem superblock.\n"));
1963
1964                 ext2fs_free(fs);
1965                 exit(1);
1966         }
1967         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
1968
1969         if (I_flag && !io_ptr_orig) {
1970                 /*
1971                  * Check the inode size is right so we can issue an
1972                  * error message and bail before setting up the tdb
1973                  * file.
1974                  */
1975                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1976                         fprintf(stderr, _("The inode size is already %lu\n"),
1977                                 new_inode_size);
1978                         rc = 1;
1979                         goto closefs;
1980                 }
1981                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1982                         fprintf(stderr, "%s",
1983                                 _("Shrinking inode size is not supported\n"));
1984                         rc = 1;
1985                         goto closefs;
1986                 }
1987                 if (new_inode_size > fs->blocksize) {
1988                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
1989                                 new_inode_size, fs->blocksize);
1990                         rc = 1;
1991                         goto closefs;
1992                 }
1993
1994                 /*
1995                  * If inode resize is requested use the
1996                  * Undo I/O manager
1997                  */
1998                 io_ptr_orig = io_ptr;
1999                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2000                 if (retval) {
2001                         rc = 1;
2002                         goto closefs;
2003                 }
2004                 if (io_ptr != io_ptr_orig) {
2005                         ext2fs_close(fs);
2006                         goto retry_open;
2007                 }
2008         }
2009
2010         sb = fs->super;
2011         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2012
2013         if (print_label) {
2014                 /* For e2label emulation */
2015                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2016                        sb->s_volume_name);
2017                 remove_error_table(&et_ext2_error_table);
2018                 goto closefs;
2019         }
2020
2021         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2022         if (retval) {
2023                 com_err("ext2fs_check_if_mount", retval,
2024                         _("while determining whether %s is mounted."),
2025                         device_name);
2026                 rc = 1;
2027                 goto closefs;
2028         }
2029         /* Normally we only need to write out the superblock */
2030         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2031
2032         if (c_flag) {
2033                 sb->s_max_mnt_count = max_mount_count;
2034                 ext2fs_mark_super_dirty(fs);
2035                 printf(_("Setting maximal mount count to %d\n"),
2036                        max_mount_count);
2037         }
2038         if (C_flag) {
2039                 sb->s_mnt_count = mount_count;
2040                 ext2fs_mark_super_dirty(fs);
2041                 printf(_("Setting current mount count to %d\n"), mount_count);
2042         }
2043         if (e_flag) {
2044                 sb->s_errors = errors;
2045                 ext2fs_mark_super_dirty(fs);
2046                 printf(_("Setting error behavior to %d\n"), errors);
2047         }
2048         if (g_flag) {
2049                 sb->s_def_resgid = resgid;
2050                 ext2fs_mark_super_dirty(fs);
2051                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2052         }
2053         if (i_flag) {
2054                 if (interval >= (1ULL << 32)) {
2055                         com_err(program_name, 0,
2056                                 _("interval between checks is too big (%lu)"),
2057                                 interval);
2058                         rc = 1;
2059                         goto closefs;
2060                 }
2061                 sb->s_checkinterval = interval;
2062                 ext2fs_mark_super_dirty(fs);
2063                 printf(_("Setting interval between checks to %lu seconds\n"),
2064                        interval);
2065         }
2066         if (m_flag) {
2067                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2068                                           ext2fs_blocks_count(sb) / 100.0);
2069                 ext2fs_mark_super_dirty(fs);
2070                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2071                         reserved_ratio, ext2fs_r_blocks_count(sb));
2072         }
2073         if (r_flag) {
2074                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2075                         com_err(program_name, 0,
2076                                 _("reserved blocks count is too big (%llu)"),
2077                                 reserved_blocks);
2078                         rc = 1;
2079                         goto closefs;
2080                 }
2081                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2082                 ext2fs_mark_super_dirty(fs);
2083                 printf(_("Setting reserved blocks count to %llu\n"),
2084                        reserved_blocks);
2085         }
2086         if (s_flag == 1) {
2087                 if (sb->s_feature_ro_compat &
2088                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
2089                         fputs(_("\nThe filesystem already has sparse "
2090                                 "superblocks.\n"), stderr);
2091                 } else if (sb->s_feature_incompat &
2092                         EXT2_FEATURE_INCOMPAT_META_BG) {
2093                         fputs(_("\nSetting the sparse superblock flag not "
2094                                 "supported\nfor filesystems with "
2095                                 "the meta_bg feature enabled.\n"),
2096                                 stderr);
2097                         rc = 1;
2098                         goto closefs;
2099                 } else {
2100                         sb->s_feature_ro_compat |=
2101                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2102                         sb->s_state &= ~EXT2_VALID_FS;
2103                         ext2fs_mark_super_dirty(fs);
2104                         printf(_("\nSparse superblock flag set.  %s"),
2105                                _(please_fsck));
2106                 }
2107         }
2108         if (s_flag == 0) {
2109                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2110                       stderr);
2111                 rc = 1;
2112                 goto closefs;
2113         }
2114         if (T_flag) {
2115                 sb->s_lastcheck = last_check_time;
2116                 ext2fs_mark_super_dirty(fs);
2117                 printf(_("Setting time filesystem last checked to %s\n"),
2118                        ctime(&last_check_time));
2119         }
2120         if (u_flag) {
2121                 sb->s_def_resuid = resuid;
2122                 ext2fs_mark_super_dirty(fs);
2123                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2124         }
2125         if (L_flag) {
2126                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2127                         fputs(_("Warning: label too long, truncating.\n"),
2128                               stderr);
2129                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2130                 strncpy(sb->s_volume_name, new_label,
2131                         sizeof(sb->s_volume_name));
2132                 ext2fs_mark_super_dirty(fs);
2133         }
2134         if (M_flag) {
2135                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2136                 strncpy(sb->s_last_mounted, new_last_mounted,
2137                         sizeof(sb->s_last_mounted));
2138                 ext2fs_mark_super_dirty(fs);
2139         }
2140         if (mntopts_cmd) {
2141                 rc = update_mntopts(fs, mntopts_cmd);
2142                 if (rc)
2143                         goto closefs;
2144         }
2145         if (features_cmd) {
2146                 rc = update_feature_set(fs, features_cmd);
2147                 if (rc)
2148                         goto closefs;
2149         }
2150         if (extended_cmd) {
2151                 rc = parse_extended_opts(fs, extended_cmd);
2152                 if (rc)
2153                         goto closefs;
2154                 if (clear_mmp && !f_flag) {
2155                         fputs(_("Error in using clear_mmp. "
2156                                 "It must be used with -f\n"),
2157                               stderr);
2158                         goto closefs;
2159                 }
2160         }
2161         if (clear_mmp) {
2162                 rc = ext2fs_mmp_clear(fs);
2163                 goto closefs;
2164         }
2165         if (journal_size || journal_device) {
2166                 rc = add_journal(fs);
2167                 if (rc)
2168                         goto closefs;
2169         }
2170
2171         if (Q_flag) {
2172                 if (mount_flags & EXT2_MF_MOUNTED) {
2173                         fputs(_("The quota feature may only be changed when "
2174                                 "the filesystem is unmounted.\n"), stderr);
2175                         rc = 1;
2176                         goto closefs;
2177                 }
2178                 handle_quota_options(fs);
2179         }
2180
2181         if (U_flag) {
2182                 int set_csum = 0;
2183                 dgrp_t i;
2184
2185                 if (sb->s_feature_ro_compat &
2186                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2187                         /*
2188                          * Changing the UUID requires rewriting all metadata,
2189                          * which can race with a mounted fs.  Don't allow that.
2190                          */
2191                         if (mount_flags & EXT2_MF_MOUNTED) {
2192                                 fputs(_("The UUID may only be "
2193                                         "changed when the filesystem is "
2194                                         "unmounted.\n"), stderr);
2195                                 exit(1);
2196                         }
2197                         if (check_fsck_needed(fs))
2198                                 exit(1);
2199
2200                         /*
2201                          * Determine if the block group checksums are
2202                          * correct so we know whether or not to set
2203                          * them later on.
2204                          */
2205                         for (i = 0; i < fs->group_desc_count; i++)
2206                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2207                                         break;
2208                         if (i >= fs->group_desc_count)
2209                                 set_csum = 1;
2210                 }
2211                 if ((strcasecmp(new_UUID, "null") == 0) ||
2212                     (strcasecmp(new_UUID, "clear") == 0)) {
2213                         uuid_clear(sb->s_uuid);
2214                 } else if (strcasecmp(new_UUID, "time") == 0) {
2215                         uuid_generate_time(sb->s_uuid);
2216                 } else if (strcasecmp(new_UUID, "random") == 0) {
2217                         uuid_generate(sb->s_uuid);
2218                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2219                         com_err(program_name, 0, "%s",
2220                                 _("Invalid UUID format\n"));
2221                         rc = 1;
2222                         goto closefs;
2223                 }
2224                 if (set_csum) {
2225                         for (i = 0; i < fs->group_desc_count; i++)
2226                                 ext2fs_group_desc_csum_set(fs, i);
2227                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2228                 }
2229                 ext2fs_mark_super_dirty(fs);
2230         }
2231         if (I_flag) {
2232                 if (mount_flags & EXT2_MF_MOUNTED) {
2233                         fputs(_("The inode size may only be "
2234                                 "changed when the filesystem is "
2235                                 "unmounted.\n"), stderr);
2236                         rc = 1;
2237                         goto closefs;
2238                 }
2239                 if (fs->super->s_feature_incompat &
2240                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2241                         fputs(_("Changing the inode size not supported for "
2242                                 "filesystems with the flex_bg\n"
2243                                 "feature enabled.\n"),
2244                               stderr);
2245                         rc = 1;
2246                         goto closefs;
2247                 }
2248                 /*
2249                  * We want to update group descriptor also
2250                  * with the new free inode count
2251                  */
2252                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2253                 if (resize_inode(fs, new_inode_size) == 0) {
2254                         printf(_("Setting inode size %lu\n"),
2255                                                         new_inode_size);
2256                 } else {
2257                         printf("%s", _("Failed to change inode size\n"));
2258                         rc = 1;
2259                         goto closefs;
2260                 }
2261         }
2262
2263         if (l_flag)
2264                 list_super(sb);
2265         if (stride_set) {
2266                 sb->s_raid_stride = stride;
2267                 ext2fs_mark_super_dirty(fs);
2268                 printf(_("Setting stride size to %d\n"), stride);
2269         }
2270         if (stripe_width_set) {
2271                 sb->s_raid_stripe_width = stripe_width;
2272                 ext2fs_mark_super_dirty(fs);
2273                 printf(_("Setting stripe width to %d\n"), stripe_width);
2274         }
2275         if (ext_mount_opts) {
2276                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2277                         sizeof(fs->super->s_mount_opts));
2278                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2279                 ext2fs_mark_super_dirty(fs);
2280                 printf(_("Setting extended default mount options to '%s'\n"),
2281                        ext_mount_opts);
2282                 free(ext_mount_opts);
2283         }
2284         free(device_name);
2285         remove_error_table(&et_ext2_error_table);
2286
2287 closefs:
2288         if (rc) {
2289                 ext2fs_mmp_stop(fs);
2290                 exit(1);
2291         }
2292
2293         return (ext2fs_close(fs) ? 1 : 0);
2294 }