misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include <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 #include <string.h>
  44 #include <time.h>
  45 #include <unistd.h>
  46 #include <sys/types.h>
  47 #include <libgen.h>
  48 #include <limits.h>
  49
  50 #include "ext2fs/ext2_fs.h"
  51 #include "ext2fs/ext2fs.h"
  52 #include "et/com_err.h"
  53 #include "uuid/uuid.h"
  54 #include "e2p/e2p.h"
  55 #include "jfs_user.h"
  56 #include "util.h"
  57 #include "blkid/blkid.h"
  58 #include "quota/mkquota.h"
  59
  60 #include "../version.h"
  61 #include "nls-enable.h"
  62
  63 #define QOPT_ENABLE     (1)
  64 #define QOPT_DISABLE    (-1)
  65
  66 extern int ask_yn(const char *string, int def);
  67
  68 const char *program_name = "tune2fs";
  69 char *device_name;
  70 char *new_label, *new_last_mounted, *new_UUID;
  71 char *io_options;
  72 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  73 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  74 static int I_flag;
  75 static time_t last_check_time;
  76 static int print_label;
  77 static int max_mount_count, mount_count, mount_flags;
  78 static unsigned long interval;
  79 static blk64_t reserved_blocks;
  80 static double reserved_ratio;
  81 static unsigned long resgid, resuid;
  82 static unsigned short errors;
  83 static int open_flag;
  84 static char *features_cmd;
  85 static char *mntopts_cmd;
  86 static int stride, stripe_width;
  87 static int stride_set, stripe_width_set;
  88 static char *extended_cmd;
  89 static unsigned long new_inode_size;
  90 static char *ext_mount_opts;
  91 static int usrquota, grpquota;
  92
  93 int journal_size, journal_flags;
  94 char *journal_device;
  95
  96 static struct list_head blk_move_list;
  97
  98 struct blk_move {
  99         struct list_head list;
 100         blk64_t old_loc;
 101         blk64_t new_loc;
 102 };
 103
 104
 105 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 106
 107 #ifdef CONFIG_BUILD_FINDFS
 108 void do_findfs(int argc, char **argv);
 109 #endif
 110
 111 static void usage(void)
 112 {
 113         fprintf(stderr,
 114                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 115                   "[-g group]\n"
 116                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 117                   "\t[-m reserved_blocks_percent] "
 118                   "[-o [^]mount_options[,...]] \n"
 119                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 120                   "[-L volume_label]\n"
 121                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 122                   "\t[-E extended-option[,...]] [-T last_check_time] "
 123                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 124         exit(1);
 125 }
 126
 127 static __u32 ok_features[3] = {
 128         /* Compat */
 129         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 130                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 131         /* Incompat */
 132         EXT2_FEATURE_INCOMPAT_FILETYPE |
 133                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 134                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 135         /* R/O compat */
 136         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 137                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 138                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 139                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 140                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 141                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 142                 EXT4_FEATURE_RO_COMPAT_QUOTA
 143 };
 144
 145 static __u32 clear_ok_features[3] = {
 146         /* Compat */
 147         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 148                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 149                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 150         /* Incompat */
 151         EXT2_FEATURE_INCOMPAT_FILETYPE |
 152                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 153         /* R/O compat */
 154         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 155                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 156                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 157                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 158                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 159                 EXT4_FEATURE_RO_COMPAT_QUOTA
 160 };
 161
 162 /*
 163  * Remove an external journal from the filesystem
 164  */
 165 static void remove_journal_device(ext2_filsys fs)
 166 {
 167         char            *journal_path;
 168         ext2_filsys     jfs;
 169         char            buf[1024];
 170         journal_superblock_t    *jsb;
 171         int             i, nr_users;
 172         errcode_t       retval;
 173         int             commit_remove_journal = 0;
 174         io_manager      io_ptr;
 175
 176         if (f_flag)
 177                 commit_remove_journal = 1; /* force removal even if error */
 178
 179         uuid_unparse(fs->super->s_journal_uuid, buf);
 180         journal_path = blkid_get_devname(NULL, "UUID", buf);
 181
 182         if (!journal_path) {
 183                 journal_path =
 184                         ext2fs_find_block_device(fs->super->s_journal_dev);
 185                 if (!journal_path)
 186                         return;
 187         }
 188
 189 #ifdef CONFIG_TESTIO_DEBUG
 190         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 191                 io_ptr = test_io_manager;
 192                 test_io_backing_manager = unix_io_manager;
 193         } else
 194 #endif
 195                 io_ptr = unix_io_manager;
 196         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 197                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 198                              fs->blocksize, io_ptr, &jfs);
 199         if (retval) {
 200                 com_err(program_name, retval,
 201                         _("while trying to open external journal"));
 202                 goto no_valid_journal;
 203         }
 204         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 205                 fprintf(stderr, _("%s is not a journal device.\n"),
 206                         journal_path);
 207                 goto no_valid_journal;
 208         }
 209
 210         /* Get the journal superblock */
 211         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 212                 com_err(program_name, retval,
 213                         _("while reading journal superblock"));
 214                 goto no_valid_journal;
 215         }
 216
 217         jsb = (journal_superblock_t *) buf;
 218         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 219             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 220                 fputs(_("Journal superblock not found!\n"), stderr);
 221                 goto no_valid_journal;
 222         }
 223
 224         /* Find the filesystem UUID */
 225         nr_users = ntohl(jsb->s_nr_users);
 226         for (i = 0; i < nr_users; i++) {
 227                 if (memcmp(fs->super->s_uuid,
 228                            &jsb->s_users[i*16], 16) == 0)
 229                         break;
 230         }
 231         if (i >= nr_users) {
 232                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 233                       stderr);
 234                 commit_remove_journal = 1;
 235                 goto no_valid_journal;
 236         }
 237         nr_users--;
 238         for (i = 0; i < nr_users; i++)
 239                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 240         jsb->s_nr_users = htonl(nr_users);
 241
 242         /* Write back the journal superblock */
 243         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 244                 com_err(program_name, retval,
 245                         "while writing journal superblock.");
 246                 goto no_valid_journal;
 247         }
 248
 249         commit_remove_journal = 1;
 250
 251 no_valid_journal:
 252         if (commit_remove_journal == 0) {
 253                 fputs(_("Journal NOT removed\n"), stderr);
 254                 exit(1);
 255         }
 256         fs->super->s_journal_dev = 0;
 257         uuid_clear(fs->super->s_journal_uuid);
 258         ext2fs_mark_super_dirty(fs);
 259         fputs(_("Journal removed\n"), stdout);
 260         free(journal_path);
 261 }
 262
 263 /* Helper function for remove_journal_inode */
 264 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 265                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 266                                blk64_t ref_block EXT2FS_ATTR((unused)),
 267                                int ref_offset EXT2FS_ATTR((unused)),
 268                                void *private EXT2FS_ATTR((unused)))
 269 {
 270         blk64_t block;
 271         int     group;
 272
 273         block = *blocknr;
 274         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 275         group = ext2fs_group_of_blk2(fs, block);
 276         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 277         ext2fs_group_desc_csum_set(fs, group);
 278         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 279         return 0;
 280 }
 281
 282 /*
 283  * Remove the journal inode from the filesystem
 284  */
 285 static void remove_journal_inode(ext2_filsys fs)
 286 {
 287         struct ext2_inode       inode;
 288         errcode_t               retval;
 289         ino_t                   ino = fs->super->s_journal_inum;
 290
 291         retval = ext2fs_read_inode(fs, ino,  &inode);
 292         if (retval) {
 293                 com_err(program_name, retval,
 294                         _("while reading journal inode"));
 295                 exit(1);
 296         }
 297         if (ino == EXT2_JOURNAL_INO) {
 298                 retval = ext2fs_read_bitmaps(fs);
 299                 if (retval) {
 300                         com_err(program_name, retval,
 301                                 _("while reading bitmaps"));
 302                         exit(1);
 303                 }
 304                 retval = ext2fs_block_iterate3(fs, ino,
 305                                                BLOCK_FLAG_READ_ONLY, NULL,
 306                                                release_blocks_proc, NULL);
 307                 if (retval) {
 308                         com_err(program_name, retval,
 309                                 _("while clearing journal inode"));
 310                         exit(1);
 311                 }
 312                 memset(&inode, 0, sizeof(inode));
 313                 ext2fs_mark_bb_dirty(fs);
 314                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 315         } else
 316                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 317         retval = ext2fs_write_inode(fs, ino, &inode);
 318         if (retval) {
 319                 com_err(program_name, retval,
 320                         _("while writing journal inode"));
 321                 exit(1);
 322         }
 323         fs->super->s_journal_inum = 0;
 324         ext2fs_mark_super_dirty(fs);
 325 }
 326
 327 /*
 328  * Update the default mount options
 329  */
 330 static void update_mntopts(ext2_filsys fs, char *mntopts)
 331 {
 332         struct ext2_super_block *sb = fs->super;
 333
 334         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 335                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 336                         mntopts);
 337                 exit(1);
 338         }
 339         ext2fs_mark_super_dirty(fs);
 340 }
 341
 342 static void request_fsck_afterwards(ext2_filsys fs)
 343 {
 344         static int requested = 0;
 345
 346         if (requested++)
 347                 return;
 348         fs->super->s_state &= ~EXT2_VALID_FS;
 349         printf("\n%s\n", _(please_fsck));
 350         if (mount_flags & EXT2_MF_READONLY)
 351                 printf(_("(and reboot afterwards!)\n"));
 352 }
 353
 354 /*
 355  * Update the feature set as provided by the user.
 356  */
 357 static void update_feature_set(ext2_filsys fs, char *features)
 358 {
 359         struct ext2_super_block *sb = fs->super;
 360         struct ext2_group_desc *gd;
 361         __u32           old_features[3];
 362         int             i, type_err;
 363         unsigned int    mask_err;
 364
 365 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 366                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 367 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 368                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 369 #define FEATURE_CHANGED(type, mask) ((mask) & \
 370                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 371
 372         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 373         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 374         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 375
 376         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 377                               ok_features, clear_ok_features,
 378                               &type_err, &mask_err)) {
 379                 if (!mask_err)
 380                         fprintf(stderr,
 381                                 _("Invalid filesystem option set: %s\n"),
 382                                 features);
 383                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 384                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 385                                           "not supported.\n"),
 386                                 e2p_feature2string(type_err &
 387                                                    E2P_FEATURE_TYPE_MASK,
 388                                                    mask_err));
 389                 else
 390                         fprintf(stderr, _("Setting filesystem feature '%s' "
 391                                           "not supported.\n"),
 392                                 e2p_feature2string(type_err, mask_err));
 393                 exit(1);
 394         }
 395
 396         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 397                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 398                     !(mount_flags & EXT2_MF_READONLY)) {
 399                         fputs(_("The has_journal feature may only be "
 400                                 "cleared when the filesystem is\n"
 401                                 "unmounted or mounted "
 402                                 "read-only.\n"), stderr);
 403                         exit(1);
 404                 }
 405                 if (sb->s_feature_incompat &
 406                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 407                         fputs(_("The needs_recovery flag is set.  "
 408                                 "Please run e2fsck before clearing\n"
 409                                 "the has_journal flag.\n"), stderr);
 410                         exit(1);
 411                 }
 412                 if (sb->s_journal_inum) {
 413                         remove_journal_inode(fs);
 414                 }
 415                 if (sb->s_journal_dev) {
 416                         remove_journal_device(fs);
 417                 }
 418         }
 419
 420         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 421                 /*
 422                  * If adding a journal flag, let the create journal
 423                  * code below handle setting the flag and creating the
 424                  * journal.  We supply a default size if necessary.
 425                  */
 426                 if (!journal_size)
 427                         journal_size = -1;
 428                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 429         }
 430
 431         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 432                 if (!sb->s_def_hash_version)
 433                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 434                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 435                         uuid_generate((unsigned char *) sb->s_hash_seed);
 436         }
 437
 438         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 439                 if (ext2fs_check_desc(fs)) {
 440                         fputs(_("Clearing the flex_bg flag would "
 441                                 "cause the the filesystem to be\n"
 442                                 "inconsistent.\n"), stderr);
 443                         exit(1);
 444                 }
 445         }
 446
 447         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 448                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 449                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 450                     !(mount_flags & EXT2_MF_READONLY)) {
 451                         fputs(_("The huge_file feature may only be "
 452                                 "cleared when the filesystem is\n"
 453                                 "unmounted or mounted "
 454                                 "read-only.\n"), stderr);
 455                         exit(1);
 456                 }
 457         }
 458
 459         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 460                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 461                 for (i = 0; i < fs->group_desc_count; i++) {
 462                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 463                         gd->bg_itable_unused = 0;
 464                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 465                         ext2fs_group_desc_csum_set(fs, i);
 466                 }
 467                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 468         }
 469
 470         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 471                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 472                 for (i = 0; i < fs->group_desc_count; i++) {
 473                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 474                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 475                                 /*
 476                                  * XXX what we really should do is zap
 477                                  * uninitialized inode tables instead.
 478                                  */
 479                                 request_fsck_afterwards(fs);
 480                                 break;
 481                         }
 482                         gd->bg_itable_unused = 0;
 483                         gd->bg_flags = 0;
 484                         gd->bg_checksum = 0;
 485                 }
 486                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 487         }
 488
 489         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 490                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 491                 /*
 492                  * Set the Q_flag here and handle the quota options in the code
 493                  * below.
 494                  */
 495                 if (!Q_flag) {
 496                         Q_flag = 1;
 497                         /* Enable both user quota and group quota by default */
 498                         usrquota = QOPT_ENABLE;
 499                         grpquota = QOPT_ENABLE;
 500                 }
 501                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 502         }
 503
 504         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 505                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 506                 /*
 507                  * Set the Q_flag here and handle the quota options in the code
 508                  * below.
 509                  */
 510                 if (Q_flag)
 511                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 512                                 "arguments.\n"), stderr);
 513                 Q_flag = 1;
 514                 /* Disable both user quota and group quota by default */
 515                 usrquota = QOPT_DISABLE;
 516                 grpquota = QOPT_DISABLE;
 517         }
 518
 519         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 520             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 521              sb->s_feature_incompat))
 522                 ext2fs_update_dynamic_rev(fs);
 523
 524         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 525                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 526             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 527                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 528             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 529                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 530             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 531                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 532             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 533                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 534                 request_fsck_afterwards(fs);
 535
 536         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 537             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 538             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 539                 ext2fs_mark_super_dirty(fs);
 540 }
 541
 542 /*
 543  * Add a journal to the filesystem.
 544  */
 545 static void add_journal(ext2_filsys fs)
 546 {
 547         unsigned long journal_blocks;
 548         errcode_t       retval;
 549         ext2_filsys     jfs;
 550         io_manager      io_ptr;
 551
 552         if (fs->super->s_feature_compat &
 553             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 554                 fputs(_("The filesystem already has a journal.\n"), stderr);
 555                 goto err;
 556         }
 557         if (journal_device) {
 558                 check_plausibility(journal_device);
 559                 check_mount(journal_device, 0, _("journal"));
 560 #ifdef CONFIG_TESTIO_DEBUG
 561                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 562                         io_ptr = test_io_manager;
 563                         test_io_backing_manager = unix_io_manager;
 564                 } else
 565 #endif
 566                         io_ptr = unix_io_manager;
 567                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 568                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 569                                      fs->blocksize, io_ptr, &jfs);
 570                 if (retval) {
 571                         com_err(program_name, retval,
 572                                 _("\n\twhile trying to open journal on %s\n"),
 573                                 journal_device);
 574                         goto err;
 575                 }
 576                 printf(_("Creating journal on device %s: "),
 577                        journal_device);
 578                 fflush(stdout);
 579
 580                 retval = ext2fs_add_journal_device(fs, jfs);
 581                 ext2fs_close(jfs);
 582                 if (retval) {
 583                         com_err(program_name, retval,
 584                                 _("while adding filesystem to journal on %s"),
 585                                 journal_device);
 586                         goto err;
 587                 }
 588                 fputs(_("done\n"), stdout);
 589         } else if (journal_size) {
 590                 fputs(_("Creating journal inode: "), stdout);
 591                 fflush(stdout);
 592                 journal_blocks = figure_journal_size(journal_size, fs);
 593
 594                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 595                                                   journal_flags);
 596                 if (retval) {
 597                         fprintf(stderr, "\n");
 598                         com_err(program_name, retval,
 599                                 _("\n\twhile trying to create journal file"));
 600                         exit(1);
 601                 } else
 602                         fputs(_("done\n"), stdout);
 603                 /*
 604                  * If the filesystem wasn't mounted, we need to force
 605                  * the block group descriptors out.
 606                  */
 607                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 608                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 609         }
 610         print_check_message(fs->super->s_max_mnt_count,
 611                             fs->super->s_checkinterval);
 612         return;
 613
 614 err:
 615         free(journal_device);
 616         exit(1);
 617 }
 618
 619 void handle_quota_options(ext2_filsys fs)
 620 {
 621         quota_ctx_t qctx;
 622         errcode_t retval;
 623         ext2_ino_t qf_ino;
 624
 625         if (!usrquota && !grpquota)
 626                 /* Nothing to do. */
 627                 return;
 628
 629         init_quota_context(&qctx, fs, -1);
 630
 631         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 632                 if ((qf_ino = quota_file_exists(fs, USRQUOTA, QFMT_VFS_V1)) > 0)
 633                         set_sb_quota_inum(fs, qf_ino, USRQUOTA);
 634                 else
 635                         write_quota_inode(qctx, USRQUOTA);
 636         } else if (usrquota == QOPT_DISABLE) {
 637                 remove_quota_inode(fs, USRQUOTA);
 638         }
 639
 640         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 641                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA, QFMT_VFS_V1)) > 0)
 642                         set_sb_quota_inum(fs, qf_ino, GRPQUOTA);
 643                 else
 644                         write_quota_inode(qctx, GRPQUOTA);
 645         } else if (grpquota == QOPT_DISABLE) {
 646                 remove_quota_inode(fs, GRPQUOTA);
 647         }
 648
 649         release_quota_context(&qctx);
 650
 651         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 652                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 653                 ext2fs_mark_super_dirty(fs);
 654         } else if ((usrquota == QOPT_DISABLE) && (grpquota == QOPT_DISABLE)) {
 655                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 656                 ext2fs_mark_super_dirty(fs);
 657         }
 658
 659         return;
 660 }
 661
 662 void parse_quota_opts(const char *opts)
 663 {
 664         char    *buf, *token, *next, *p, *arg;
 665         int     len;
 666
 667         len = strlen(opts);
 668         buf = malloc(len+1);
 669         if (!buf) {
 670                 fputs(_("Couldn't allocate memory to parse quota "
 671                         "options!\n"), stderr);
 672                 exit(1);
 673         }
 674         strcpy(buf, opts);
 675         for (token = buf; token && *token; token = next) {
 676                 p = strchr(token, ',');
 677                 next = 0;
 678                 if (p) {
 679                         *p = 0;
 680                         next = p+1;
 681                 }
 682
 683                 if (strcmp(token, "usrquota") == 0) {
 684                         usrquota = QOPT_ENABLE;
 685                 } else if (strcmp(token, "^usrquota") == 0) {
 686                         usrquota = QOPT_DISABLE;
 687                 } else if (strcmp(token, "grpquota") == 0) {
 688                         grpquota = QOPT_ENABLE;
 689                 } else if (strcmp(token, "^grpquota") == 0) {
 690                         grpquota = QOPT_DISABLE;
 691                 } else {
 692                         fputs(_("\nBad quota options specified.\n\n"
 693                                 "Following valid quota options are available "
 694                                 "(pass by separating with comma):\n"
 695                                 "\t[^]usrquota\n"
 696                                 "\t[^]grpquota\n"
 697                                 "\n\n"), stderr);
 698                         free(buf);
 699                         exit(1);
 700                 }
 701         }
 702         free(buf);
 703 }
 704
 705
 706
 707 static void parse_e2label_options(int argc, char ** argv)
 708 {
 709         if ((argc < 2) || (argc > 3)) {
 710                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 711                 exit(1);
 712         }
 713         io_options = strchr(argv[1], '?');
 714         if (io_options)
 715                 *io_options++ = 0;
 716         device_name = blkid_get_devname(NULL, argv[1], NULL);
 717         if (!device_name) {
 718                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 719                         argv[1]);
 720                 exit(1);
 721         }
 722         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 723         if (argc == 3) {
 724                 open_flag |= EXT2_FLAG_RW;
 725                 L_flag = 1;
 726                 new_label = argv[2];
 727         } else
 728                 print_label++;
 729 }
 730
 731 static time_t parse_time(char *str)
 732 {
 733         struct  tm      ts;
 734
 735         if (strcmp(str, "now") == 0) {
 736                 return (time(0));
 737         }
 738         memset(&ts, 0, sizeof(ts));
 739 #ifdef HAVE_STRPTIME
 740         strptime(str, "%Y%m%d%H%M%S", &ts);
 741 #else
 742         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 743                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 744         ts.tm_year -= 1900;
 745         ts.tm_mon -= 1;
 746         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 747             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 748             ts.tm_min > 59 || ts.tm_sec > 61)
 749                 ts.tm_mday = 0;
 750 #endif
 751         if (ts.tm_mday == 0) {
 752                 com_err(program_name, 0,
 753                         _("Couldn't parse date/time specifier: %s"),
 754                         str);
 755                 usage();
 756         }
 757         ts.tm_isdst = -1;
 758         return (mktime(&ts));
 759 }
 760
 761 static void parse_tune2fs_options(int argc, char **argv)
 762 {
 763         int c;
 764         char *tmp;
 765         struct group *gr;
 766         struct passwd *pw;
 767
 768         open_flag = 0;
 769
 770         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 771         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:Q:T:U:")) != EOF)
 772                 switch (c) {
 773                 case 'c':
 774                         max_mount_count = strtol(optarg, &tmp, 0);
 775                         if (*tmp || max_mount_count > 16000) {
 776                                 com_err(program_name, 0,
 777                                         _("bad mounts count - %s"),
 778                                         optarg);
 779                                 usage();
 780                         }
 781                         if (max_mount_count == 0)
 782                                 max_mount_count = -1;
 783                         c_flag = 1;
 784                         open_flag = EXT2_FLAG_RW;
 785                         break;
 786                 case 'C':
 787                         mount_count = strtoul(optarg, &tmp, 0);
 788                         if (*tmp || mount_count > 16000) {
 789                                 com_err(program_name, 0,
 790                                         _("bad mounts count - %s"),
 791                                         optarg);
 792                                 usage();
 793                         }
 794                         C_flag = 1;
 795                         open_flag = EXT2_FLAG_RW;
 796                         break;
 797                 case 'e':
 798                         if (strcmp(optarg, "continue") == 0)
 799                                 errors = EXT2_ERRORS_CONTINUE;
 800                         else if (strcmp(optarg, "remount-ro") == 0)
 801                                 errors = EXT2_ERRORS_RO;
 802                         else if (strcmp(optarg, "panic") == 0)
 803                                 errors = EXT2_ERRORS_PANIC;
 804                         else {
 805                                 com_err(program_name, 0,
 806                                         _("bad error behavior - %s"),
 807                                         optarg);
 808                                 usage();
 809                         }
 810                         e_flag = 1;
 811                         open_flag = EXT2_FLAG_RW;
 812                         break;
 813                 case 'E':
 814                         extended_cmd = optarg;
 815                         open_flag |= EXT2_FLAG_RW;
 816                         break;
 817                 case 'f': /* Force */
 818                         f_flag = 1;
 819                         break;
 820                 case 'g':
 821                         resgid = strtoul(optarg, &tmp, 0);
 822                         if (*tmp) {
 823                                 gr = getgrnam(optarg);
 824                                 if (gr == NULL)
 825                                         tmp = optarg;
 826                                 else {
 827                                         resgid = gr->gr_gid;
 828                                         *tmp = 0;
 829                                 }
 830                         }
 831                         if (*tmp) {
 832                                 com_err(program_name, 0,
 833                                         _("bad gid/group name - %s"),
 834                                         optarg);
 835                                 usage();
 836                         }
 837                         g_flag = 1;
 838                         open_flag = EXT2_FLAG_RW;
 839                         break;
 840                 case 'i':
 841                         interval = strtoul(optarg, &tmp, 0);
 842                         switch (*tmp) {
 843                         case 's':
 844                                 tmp++;
 845                                 break;
 846                         case '\0':
 847                         case 'd':
 848                         case 'D': /* days */
 849                                 interval *= 86400;
 850                                 if (*tmp != '\0')
 851                                         tmp++;
 852                                 break;
 853                         case 'm':
 854                         case 'M': /* months! */
 855                                 interval *= 86400 * 30;
 856                                 tmp++;
 857                                 break;
 858                         case 'w':
 859                         case 'W': /* weeks */
 860                                 interval *= 86400 * 7;
 861                                 tmp++;
 862                                 break;
 863                         }
 864                         if (*tmp) {
 865                                 com_err(program_name, 0,
 866                                         _("bad interval - %s"), optarg);
 867                                 usage();
 868                         }
 869                         i_flag = 1;
 870                         open_flag = EXT2_FLAG_RW;
 871                         break;
 872                 case 'j':
 873                         if (!journal_size)
 874                                 journal_size = -1;
 875                         open_flag = EXT2_FLAG_RW;
 876                         break;
 877                 case 'J':
 878                         parse_journal_opts(optarg);
 879                         open_flag = EXT2_FLAG_RW;
 880                         break;
 881                 case 'l':
 882                         l_flag = 1;
 883                         break;
 884                 case 'L':
 885                         new_label = optarg;
 886                         L_flag = 1;
 887                         open_flag |= EXT2_FLAG_RW |
 888                                 EXT2_FLAG_JOURNAL_DEV_OK;
 889                         break;
 890                 case 'm':
 891                         reserved_ratio = strtod(optarg, &tmp);
 892                         if (*tmp || reserved_ratio > 50 ||
 893                             reserved_ratio < 0) {
 894                                 com_err(program_name, 0,
 895                                         _("bad reserved block ratio - %s"),
 896                                         optarg);
 897                                 usage();
 898                         }
 899                         m_flag = 1;
 900                         open_flag = EXT2_FLAG_RW;
 901                         break;
 902                 case 'M':
 903                         new_last_mounted = optarg;
 904                         M_flag = 1;
 905                         open_flag = EXT2_FLAG_RW;
 906                         break;
 907                 case 'o':
 908                         if (mntopts_cmd) {
 909                                 com_err(program_name, 0,
 910                                         _("-o may only be specified once"));
 911                                 usage();
 912                         }
 913                         mntopts_cmd = optarg;
 914                         open_flag = EXT2_FLAG_RW;
 915                         break;
 916
 917                 case 'O':
 918                         if (features_cmd) {
 919                                 com_err(program_name, 0,
 920                                         _("-O may only be specified once"));
 921                                 usage();
 922                         }
 923                         features_cmd = optarg;
 924                         open_flag = EXT2_FLAG_RW;
 925                         break;
 926                 case 'Q':
 927                         Q_flag = 1;
 928                         parse_quota_opts(optarg);
 929                         open_flag = EXT2_FLAG_RW;
 930                         break;
 931                 case 'r':
 932                         reserved_blocks = strtoul(optarg, &tmp, 0);
 933                         if (*tmp) {
 934                                 com_err(program_name, 0,
 935                                         _("bad reserved blocks count - %s"),
 936                                         optarg);
 937                                 usage();
 938                         }
 939                         r_flag = 1;
 940                         open_flag = EXT2_FLAG_RW;
 941                         break;
 942                 case 's': /* Deprecated */
 943                         s_flag = atoi(optarg);
 944                         open_flag = EXT2_FLAG_RW;
 945                         break;
 946                 case 'T':
 947                         T_flag = 1;
 948                         last_check_time = parse_time(optarg);
 949                         open_flag = EXT2_FLAG_RW;
 950                         break;
 951                 case 'u':
 952                                 resuid = strtoul(optarg, &tmp, 0);
 953                                 if (*tmp) {
 954                                         pw = getpwnam(optarg);
 955                                         if (pw == NULL)
 956                                                 tmp = optarg;
 957                                         else {
 958                                                 resuid = pw->pw_uid;
 959                                                 *tmp = 0;
 960                                         }
 961                                 }
 962                                 if (*tmp) {
 963                                         com_err(program_name, 0,
 964                                                 _("bad uid/user name - %s"),
 965                                                 optarg);
 966                                         usage();
 967                                 }
 968                                 u_flag = 1;
 969                                 open_flag = EXT2_FLAG_RW;
 970                                 break;
 971                 case 'U':
 972                         new_UUID = optarg;
 973                         U_flag = 1;
 974                         open_flag = EXT2_FLAG_RW |
 975                                 EXT2_FLAG_JOURNAL_DEV_OK;
 976                         break;
 977                 case 'I':
 978                         new_inode_size = strtoul(optarg, &tmp, 0);
 979                         if (*tmp) {
 980                                 com_err(program_name, 0,
 981                                         _("bad inode size - %s"),
 982                                         optarg);
 983                                 usage();
 984                         }
 985                         if (!((new_inode_size &
 986                                (new_inode_size - 1)) == 0)) {
 987                                 com_err(program_name, 0,
 988                                         _("Inode size must be a "
 989                                           "power of two- %s"),
 990                                         optarg);
 991                                 usage();
 992                         }
 993                         open_flag = EXT2_FLAG_RW;
 994                         I_flag = 1;
 995                         break;
 996                 default:
 997                         usage();
 998                 }
 999         if (optind < argc - 1 || optind == argc)
1000                 usage();
1001         if (!open_flag && !l_flag)
1002                 usage();
1003         io_options = strchr(argv[optind], '?');
1004         if (io_options)
1005                 *io_options++ = 0;
1006         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1007         if (!device_name) {
1008                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
1009                         argv[optind]);
1010                 exit(1);
1011         }
1012 }
1013
1014 #ifdef CONFIG_BUILD_FINDFS
1015 void do_findfs(int argc, char **argv)
1016 {
1017         char    *dev;
1018
1019         if ((argc != 2) ||
1020             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1021                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1022                 exit(2);
1023         }
1024         dev = blkid_get_devname(NULL, argv[1], NULL);
1025         if (!dev) {
1026                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1027                         argv[1]);
1028                 exit(1);
1029         }
1030         puts(dev);
1031         exit(0);
1032 }
1033 #endif
1034
1035 static void parse_extended_opts(ext2_filsys fs, const char *opts)
1036 {
1037         char    *buf, *token, *next, *p, *arg;
1038         int     len, hash_alg;
1039         int     r_usage = 0;
1040
1041         len = strlen(opts);
1042         buf = malloc(len+1);
1043         if (!buf) {
1044                 fprintf(stderr,
1045                         _("Couldn't allocate memory to parse options!\n"));
1046                 exit(1);
1047         }
1048         strcpy(buf, opts);
1049         for (token = buf; token && *token; token = next) {
1050                 p = strchr(token, ',');
1051                 next = 0;
1052                 if (p) {
1053                         *p = 0;
1054                         next = p+1;
1055                 }
1056                 arg = strchr(token, '=');
1057                 if (arg) {
1058                         *arg = 0;
1059                         arg++;
1060                 }
1061                 if (!strcmp(token, "test_fs")) {
1062                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1063                         printf("Setting test filesystem flag\n");
1064                         ext2fs_mark_super_dirty(fs);
1065                 } else if (!strcmp(token, "^test_fs")) {
1066                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1067                         printf("Clearing test filesystem flag\n");
1068                         ext2fs_mark_super_dirty(fs);
1069                 } else if (strcmp(token, "stride") == 0) {
1070                         if (!arg) {
1071                                 r_usage++;
1072                                 continue;
1073                         }
1074                         stride = strtoul(arg, &p, 0);
1075                         if (*p) {
1076                                 fprintf(stderr,
1077                                        _("Invalid RAID stride: %s\n"),
1078                                         arg);
1079                                 r_usage++;
1080                                 continue;
1081                         }
1082                         stride_set = 1;
1083                 } else if (strcmp(token, "stripe-width") == 0 ||
1084                            strcmp(token, "stripe_width") == 0) {
1085                         if (!arg) {
1086                                 r_usage++;
1087                                 continue;
1088                         }
1089                         stripe_width = strtoul(arg, &p, 0);
1090                         if (*p) {
1091                                 fprintf(stderr,
1092                                         _("Invalid RAID stripe-width: %s\n"),
1093                                         arg);
1094                                 r_usage++;
1095                                 continue;
1096                         }
1097                         stripe_width_set = 1;
1098                 } else if (strcmp(token, "hash_alg") == 0 ||
1099                            strcmp(token, "hash-alg") == 0) {
1100                         if (!arg) {
1101                                 r_usage++;
1102                                 continue;
1103                         }
1104                         hash_alg = e2p_string2hash(arg);
1105                         if (hash_alg < 0) {
1106                                 fprintf(stderr,
1107                                         _("Invalid hash algorithm: %s\n"),
1108                                         arg);
1109                                 r_usage++;
1110                                 continue;
1111                         }
1112                         fs->super->s_def_hash_version = hash_alg;
1113                         printf(_("Setting default hash algorithm "
1114                                  "to %s (%d)\n"),
1115                                arg, hash_alg);
1116                         ext2fs_mark_super_dirty(fs);
1117                 } else if (!strcmp(token, "mount_opts")) {
1118                         if (!arg) {
1119                                 r_usage++;
1120                                 continue;
1121                         }
1122                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1123                                 fprintf(stderr,
1124                                         "Extended mount options too long\n");
1125                                 continue;
1126                         }
1127                         ext_mount_opts = strdup(arg);
1128                 } else
1129                         r_usage++;
1130         }
1131         if (r_usage) {
1132                 fprintf(stderr, _("\nBad options specified.\n\n"
1133                         "Extended options are separated by commas, "
1134                         "and may take an argument which\n"
1135                         "\tis set off by an equals ('=') sign.\n\n"
1136                         "Valid extended options are:\n"
1137                         "\thash_alg=<hash algorithm>\n"
1138                         "\tmount_opts=<extended default mount options>\n"
1139                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1140                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1141                         "\ttest_fs\n"
1142                         "\t^test_fs\n"));
1143                 free(buf);
1144                 exit(1);
1145         }
1146         free(buf);
1147 }
1148
1149 /*
1150  * Fill in the block bitmap bmap with the information regarding the
1151  * blocks to be moved
1152  */
1153 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1154                             ext2fs_block_bitmap bmap)
1155 {
1156         dgrp_t i;
1157         int retval;
1158         ext2_badblocks_list bb_list = 0;
1159         blk64_t j, needed_blocks = 0;
1160         blk64_t start_blk, end_blk;
1161
1162         retval = ext2fs_read_bb_inode(fs, &bb_list);
1163         if (retval)
1164                 return retval;
1165
1166         for (i = 0; i < fs->group_desc_count; i++) {
1167                 start_blk = ext2fs_inode_table_loc(fs, i) +
1168                                         fs->inode_blocks_per_group;
1169
1170                 end_blk = ext2fs_inode_table_loc(fs, i) +
1171                                         new_ino_blks_per_grp;
1172
1173                 for (j = start_blk; j < end_blk; j++) {
1174                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1175                                 /*
1176                                  * IF the block is a bad block we fail
1177                                  */
1178                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1179                                         ext2fs_badblocks_list_free(bb_list);
1180                                         return ENOSPC;
1181                                 }
1182
1183                                 ext2fs_mark_block_bitmap2(bmap, j);
1184                         } else {
1185                                 /*
1186                                  * We are going to use this block for
1187                                  * inode table. So mark them used.
1188                                  */
1189                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1190                         }
1191                 }
1192                 needed_blocks += end_blk - start_blk;
1193         }
1194
1195         ext2fs_badblocks_list_free(bb_list);
1196         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1197                 return ENOSPC;
1198
1199         return 0;
1200 }
1201
1202 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1203 {
1204         dgrp_t group;
1205         group = ext2fs_group_of_blk(fs, blk);
1206         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1207                 return 1;
1208         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1209                 return 1;
1210         return 0;
1211 }
1212
1213 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1214 {
1215         blk_t start_blk, end_blk;
1216         start_blk = fs->super->s_first_data_block +
1217                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1218         /*
1219          * We cannot get new block beyond end_blk for for the last block group
1220          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1221          */
1222         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1223         if (blk >= start_blk && blk <= end_blk)
1224                 return 1;
1225         return 0;
1226 }
1227
1228 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1229 {
1230
1231         char *buf;
1232         dgrp_t group = 0;
1233         errcode_t retval;
1234         int meta_data = 0;
1235         blk64_t blk, new_blk, goal;
1236         struct blk_move *bmv;
1237
1238         retval = ext2fs_get_mem(fs->blocksize, &buf);
1239         if (retval)
1240                 return retval;
1241
1242         for (new_blk = blk = fs->super->s_first_data_block;
1243              blk < ext2fs_blocks_count(fs->super); blk++) {
1244                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1245                         continue;
1246
1247                 if (ext2fs_is_meta_block(fs, blk)) {
1248                         /*
1249                          * If the block is mapping a fs meta data block
1250                          * like group desc/block bitmap/inode bitmap. We
1251                          * should find a block in the same group and fix
1252                          * the respective fs metadata pointers. Otherwise
1253                          * fail
1254                          */
1255                         group = ext2fs_group_of_blk(fs, blk);
1256                         goal = ext2fs_group_first_block2(fs, group);
1257                         meta_data = 1;
1258
1259                 } else {
1260                         goal = new_blk;
1261                 }
1262                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1263                 if (retval)
1264                         goto err_out;
1265
1266                 /* new fs meta data block should be in the same group */
1267                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1268                         retval = ENOSPC;
1269                         goto err_out;
1270                 }
1271
1272                 /* Mark this block as allocated */
1273                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1274
1275                 /* Add it to block move list */
1276                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1277                 if (retval)
1278                         goto err_out;
1279
1280                 bmv->old_loc = blk;
1281                 bmv->new_loc = new_blk;
1282
1283                 list_add(&(bmv->list), &blk_move_list);
1284
1285                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1286                 if (retval)
1287                         goto err_out;
1288
1289                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1290                 if (retval)
1291                         goto err_out;
1292         }
1293
1294 err_out:
1295         ext2fs_free_mem(&buf);
1296         return retval;
1297 }
1298
1299 static blk64_t translate_block(blk64_t blk)
1300 {
1301         struct list_head *entry;
1302         struct blk_move *bmv;
1303
1304         list_for_each(entry, &blk_move_list) {
1305                 bmv = list_entry(entry, struct blk_move, list);
1306                 if (bmv->old_loc == blk)
1307                         return bmv->new_loc;
1308         }
1309
1310         return 0;
1311 }
1312
1313 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1314                          blk64_t *block_nr,
1315                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1316                          blk64_t ref_block EXT2FS_ATTR((unused)),
1317                          int ref_offset EXT2FS_ATTR((unused)),
1318                          void *priv_data)
1319 {
1320         int ret = 0;
1321         blk64_t new_blk;
1322         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1323
1324         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1325                 return 0;
1326         new_blk = translate_block(*block_nr);
1327         if (new_blk) {
1328                 *block_nr = new_blk;
1329                 /*
1330                  * This will force the ext2fs_write_inode in the iterator
1331                  */
1332                 ret |= BLOCK_CHANGED;
1333         }
1334
1335         return ret;
1336 }
1337
1338 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1339 {
1340         errcode_t retval = 0;
1341         ext2_ino_t ino;
1342         blk64_t blk;
1343         char *block_buf = 0;
1344         struct ext2_inode inode;
1345         ext2_inode_scan scan = NULL;
1346
1347         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1348         if (retval)
1349                 return retval;
1350
1351         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1352         if (retval)
1353                 goto err_out;
1354
1355         while (1) {
1356                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1357                 if (retval)
1358                         goto err_out;
1359
1360                 if (!ino)
1361                         break;
1362
1363                 if (inode.i_links_count == 0)
1364                         continue; /* inode not in use */
1365
1366                 /* FIXME!!
1367                  * If we end up modifying the journal inode
1368                  * the sb->s_jnl_blocks will differ. But a
1369                  * subsequent e2fsck fixes that.
1370                  * Do we need to fix this ??
1371                  */
1372
1373                 if (ext2fs_file_acl_block(&inode) &&
1374                     ext2fs_test_block_bitmap2(bmap,
1375                                               ext2fs_file_acl_block(&inode))) {
1376                         blk = translate_block(ext2fs_file_acl_block(&inode));
1377                         if (!blk)
1378                                 continue;
1379
1380                         ext2fs_file_acl_block_set(&inode, blk);
1381
1382                         /*
1383                          * Write the inode to disk so that inode table
1384                          * resizing can work
1385                          */
1386                         retval = ext2fs_write_inode(fs, ino, &inode);
1387                         if (retval)
1388                                 goto err_out;
1389                 }
1390
1391                 if (!ext2fs_inode_has_valid_blocks(&inode))
1392                         continue;
1393
1394                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1395                                                process_block, bmap);
1396                 if (retval)
1397                         goto err_out;
1398
1399         }
1400
1401 err_out:
1402         ext2fs_free_mem(&block_buf);
1403
1404         return retval;
1405 }
1406
1407 /*
1408  * We need to scan for inode and block bitmaps that may need to be
1409  * moved.  This can take place if the filesystem was formatted for
1410  * RAID arrays using the mke2fs's extended option "stride".
1411  */
1412 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1413 {
1414         dgrp_t i;
1415         blk_t blk, new_blk;
1416
1417         for (i = 0; i < fs->group_desc_count; i++) {
1418                 blk = ext2fs_block_bitmap_loc(fs, i);
1419                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1420                         new_blk = translate_block(blk);
1421                         if (!new_blk)
1422                                 continue;
1423                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1424                 }
1425
1426                 blk = ext2fs_inode_bitmap_loc(fs, i);
1427                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1428                         new_blk = translate_block(blk);
1429                         if (!new_blk)
1430                                 continue;
1431                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1432                 }
1433         }
1434         return 0;
1435 }
1436
1437 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1438 {
1439         dgrp_t i;
1440         blk64_t blk;
1441         errcode_t retval;
1442         int new_ino_blks_per_grp;
1443         unsigned int j;
1444         char *old_itable = NULL, *new_itable = NULL;
1445         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1446         unsigned long old_ino_size;
1447         int old_itable_size, new_itable_size;
1448
1449         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1450         old_ino_size = EXT2_INODE_SIZE(fs->super);
1451
1452         new_ino_blks_per_grp = ext2fs_div_ceil(
1453                                         EXT2_INODES_PER_GROUP(fs->super) *
1454                                         new_ino_size,
1455                                         fs->blocksize);
1456
1457         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1458
1459         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1460         if (retval)
1461                 return retval;
1462
1463         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1464         if (retval)
1465                 goto err_out;
1466
1467         tmp_old_itable = old_itable;
1468         tmp_new_itable = new_itable;
1469
1470         for (i = 0; i < fs->group_desc_count; i++) {
1471                 blk = ext2fs_inode_table_loc(fs, i);
1472                 retval = io_channel_read_blk64(fs->io, blk,
1473                                 fs->inode_blocks_per_group, old_itable);
1474                 if (retval)
1475                         goto err_out;
1476
1477                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1478                         memcpy(new_itable, old_itable, old_ino_size);
1479
1480                         memset(new_itable+old_ino_size, 0,
1481                                         new_ino_size - old_ino_size);
1482
1483                         new_itable += new_ino_size;
1484                         old_itable += old_ino_size;
1485                 }
1486
1487                 /* reset the pointer */
1488                 old_itable = tmp_old_itable;
1489                 new_itable = tmp_new_itable;
1490
1491                 retval = io_channel_write_blk64(fs->io, blk,
1492                                         new_ino_blks_per_grp, new_itable);
1493                 if (retval)
1494                         goto err_out;
1495         }
1496
1497         /* Update the meta data */
1498         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1499         fs->super->s_inode_size = new_ino_size;
1500
1501 err_out:
1502         if (old_itable)
1503                 ext2fs_free_mem(&old_itable);
1504
1505         if (new_itable)
1506                 ext2fs_free_mem(&new_itable);
1507
1508         return retval;
1509 }
1510
1511 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1512 {
1513         blk64_t         blk;
1514         ext2_ino_t      ino;
1515         unsigned int    group = 0;
1516         unsigned int    count = 0;
1517         int             total_free = 0;
1518         int             group_free = 0;
1519
1520         /*
1521          * First calculate the block statistics
1522          */
1523         for (blk = fs->super->s_first_data_block;
1524              blk < ext2fs_blocks_count(fs->super); blk++) {
1525                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1526                         group_free++;
1527                         total_free++;
1528                 }
1529                 count++;
1530                 if ((count == fs->super->s_blocks_per_group) ||
1531                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1532                         ext2fs_bg_free_blocks_count_set(fs, group++,
1533                                                         group_free);
1534                         count = 0;
1535                         group_free = 0;
1536                 }
1537         }
1538         total_free = EXT2FS_C2B(fs, total_free);
1539         ext2fs_free_blocks_count_set(fs->super, total_free);
1540
1541         /*
1542          * Next, calculate the inode statistics
1543          */
1544         group_free = 0;
1545         total_free = 0;
1546         count = 0;
1547         group = 0;
1548
1549         /* Protect loop from wrap-around if s_inodes_count maxed */
1550         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1551                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1552                         group_free++;
1553                         total_free++;
1554                 }
1555                 count++;
1556                 if ((count == fs->super->s_inodes_per_group) ||
1557                     (ino == fs->super->s_inodes_count)) {
1558                         ext2fs_bg_free_inodes_count_set(fs, group++,
1559                                                         group_free);
1560                         count = 0;
1561                         group_free = 0;
1562                 }
1563         }
1564         fs->super->s_free_inodes_count = total_free;
1565         ext2fs_mark_super_dirty(fs);
1566         return 0;
1567 }
1568
1569 #define list_for_each_safe(pos, pnext, head) \
1570         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1571              pos = pnext, pnext = pos->next)
1572
1573 static void free_blk_move_list(void)
1574 {
1575         struct list_head *entry, *tmp;
1576         struct blk_move *bmv;
1577
1578         list_for_each_safe(entry, tmp, &blk_move_list) {
1579                 bmv = list_entry(entry, struct blk_move, list);
1580                 list_del(entry);
1581                 ext2fs_free_mem(&bmv);
1582         }
1583         return;
1584 }
1585
1586 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1587 {
1588         errcode_t retval;
1589         int new_ino_blks_per_grp;
1590         ext2fs_block_bitmap bmap;
1591
1592         ext2fs_read_inode_bitmap(fs);
1593         ext2fs_read_block_bitmap(fs);
1594         INIT_LIST_HEAD(&blk_move_list);
1595
1596
1597         new_ino_blks_per_grp = ext2fs_div_ceil(
1598                                         EXT2_INODES_PER_GROUP(fs->super)*
1599                                         new_size,
1600                                         fs->blocksize);
1601
1602         /* We may change the file system.
1603          * Mark the file system as invalid so that
1604          * the user is prompted to run fsck.
1605          */
1606         fs->super->s_state &= ~EXT2_VALID_FS;
1607
1608         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1609                                                 &bmap);
1610         if (retval) {
1611                 fputs(_("Failed to allocate block bitmap when "
1612                                 "increasing inode size\n"), stderr);
1613                 return retval;
1614         }
1615         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1616         if (retval) {
1617                 fputs(_("Not enough space to increase inode size \n"), stderr);
1618                 goto err_out;
1619         }
1620         retval = move_block(fs, bmap);
1621         if (retval) {
1622                 fputs(_("Failed to relocate blocks during inode resize \n"),
1623                       stderr);
1624                 goto err_out;
1625         }
1626         retval = inode_scan_and_fix(fs, bmap);
1627         if (retval)
1628                 goto err_out_undo;
1629
1630         retval = group_desc_scan_and_fix(fs, bmap);
1631         if (retval)
1632                 goto err_out_undo;
1633
1634         retval = expand_inode_table(fs, new_size);
1635         if (retval)
1636                 goto err_out_undo;
1637
1638         ext2fs_calculate_summary_stats(fs);
1639
1640         fs->super->s_state |= EXT2_VALID_FS;
1641         /* mark super block and block bitmap as dirty */
1642         ext2fs_mark_super_dirty(fs);
1643         ext2fs_mark_bb_dirty(fs);
1644
1645 err_out:
1646         free_blk_move_list();
1647         ext2fs_free_block_bitmap(bmap);
1648
1649         return retval;
1650
1651 err_out_undo:
1652         free_blk_move_list();
1653         ext2fs_free_block_bitmap(bmap);
1654         fputs(_("Error in resizing the inode size.\n"
1655                         "Run e2undo to undo the "
1656                         "file system changes. \n"), stderr);
1657
1658         return retval;
1659 }
1660
1661 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1662 {
1663         errcode_t retval = 0;
1664         const char *tdb_dir;
1665         char *tdb_file;
1666         char *dev_name, *tmp_name;
1667
1668 #if 0 /* FIXME!! */
1669         /*
1670          * Configuration via a conf file would be
1671          * nice
1672          */
1673         profile_get_string(profile, "scratch_files",
1674                                         "directory", 0, 0,
1675                                         &tdb_dir);
1676 #endif
1677         tmp_name = strdup(name);
1678         if (!tmp_name) {
1679         alloc_fn_fail:
1680                 com_err(program_name, ENOMEM,
1681                         _("Couldn't allocate memory for tdb filename\n"));
1682                 return ENOMEM;
1683         }
1684         dev_name = basename(tmp_name);
1685
1686         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1687         if (!tdb_dir)
1688                 tdb_dir = "/var/lib/e2fsprogs";
1689
1690         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1691             access(tdb_dir, W_OK))
1692                 return 0;
1693
1694         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1695         if (!tdb_file)
1696                 goto alloc_fn_fail;
1697         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1698
1699         if (!access(tdb_file, F_OK)) {
1700                 if (unlink(tdb_file) < 0) {
1701                         retval = errno;
1702                         com_err(program_name, retval,
1703                                 _("while trying to delete %s"),
1704                                 tdb_file);
1705                         free(tdb_file);
1706                         return retval;
1707                 }
1708         }
1709
1710         set_undo_io_backing_manager(*io_ptr);
1711         *io_ptr = undo_io_manager;
1712         set_undo_io_backup_file(tdb_file);
1713         printf(_("To undo the tune2fs operation please run "
1714                  "the command\n    e2undo %s %s\n\n"),
1715                  tdb_file, name);
1716         free(tdb_file);
1717         free(tmp_name);
1718         return retval;
1719 }
1720
1721 int main(int argc, char **argv)
1722 {
1723         errcode_t retval;
1724         ext2_filsys fs;
1725         struct ext2_super_block *sb;
1726         io_manager io_ptr, io_ptr_orig = NULL;
1727
1728 #ifdef ENABLE_NLS
1729         setlocale(LC_MESSAGES, "");
1730         setlocale(LC_CTYPE, "");
1731         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1732         textdomain(NLS_CAT_NAME);
1733 #endif
1734         if (argc && *argv)
1735                 program_name = *argv;
1736         add_error_table(&et_ext2_error_table);
1737
1738 #ifdef CONFIG_BUILD_FINDFS
1739         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1740                 do_findfs(argc, argv);
1741 #endif
1742         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1743                 parse_e2label_options(argc, argv);
1744         else
1745                 parse_tune2fs_options(argc, argv);
1746
1747 #ifdef CONFIG_TESTIO_DEBUG
1748         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1749                 io_ptr = test_io_manager;
1750                 test_io_backing_manager = unix_io_manager;
1751         } else
1752 #endif
1753                 io_ptr = unix_io_manager;
1754
1755 retry_open:
1756         retval = ext2fs_open2(device_name, io_options, open_flag,
1757                               0, 0, io_ptr, &fs);
1758         if (retval) {
1759                         com_err(program_name, retval,
1760                                 _("while trying to open %s"),
1761                         device_name);
1762                 fprintf(stderr,
1763                         _("Couldn't find valid filesystem superblock.\n"));
1764                 exit(1);
1765         }
1766
1767         if (I_flag && !io_ptr_orig) {
1768                 /*
1769                  * Check the inode size is right so we can issue an
1770                  * error message and bail before setting up the tdb
1771                  * file.
1772                  */
1773                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1774                         fprintf(stderr, _("The inode size is already %lu\n"),
1775                                 new_inode_size);
1776                         exit(1);
1777                 }
1778                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1779                         fprintf(stderr, _("Shrinking the inode size is "
1780                                           "not supported\n"));
1781                         exit(1);
1782                 }
1783
1784                 /*
1785                  * If inode resize is requested use the
1786                  * Undo I/O manager
1787                  */
1788                 io_ptr_orig = io_ptr;
1789                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1790                 if (retval)
1791                         exit(1);
1792                 if (io_ptr != io_ptr_orig) {
1793                         ext2fs_close(fs);
1794                         goto retry_open;
1795                 }
1796         }
1797
1798         sb = fs->super;
1799         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1800
1801         if (print_label) {
1802                 /* For e2label emulation */
1803                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1804                        sb->s_volume_name);
1805                 remove_error_table(&et_ext2_error_table);
1806                 exit(0);
1807         }
1808
1809         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1810         if (retval) {
1811                 com_err("ext2fs_check_if_mount", retval,
1812                         _("while determining whether %s is mounted."),
1813                         device_name);
1814                 exit(1);
1815         }
1816         /* Normally we only need to write out the superblock */
1817         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1818
1819         if (c_flag) {
1820                 sb->s_max_mnt_count = max_mount_count;
1821                 ext2fs_mark_super_dirty(fs);
1822                 printf(_("Setting maximal mount count to %d\n"),
1823                        max_mount_count);
1824         }
1825         if (C_flag) {
1826                 sb->s_mnt_count = mount_count;
1827                 ext2fs_mark_super_dirty(fs);
1828                 printf(_("Setting current mount count to %d\n"), mount_count);
1829         }
1830         if (e_flag) {
1831                 sb->s_errors = errors;
1832                 ext2fs_mark_super_dirty(fs);
1833                 printf(_("Setting error behavior to %d\n"), errors);
1834         }
1835         if (g_flag) {
1836                 sb->s_def_resgid = resgid;
1837                 ext2fs_mark_super_dirty(fs);
1838                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1839         }
1840         if (i_flag) {
1841                 if (interval >= (1ULL << 32)) {
1842                         com_err(program_name, 0,
1843                                 _("interval between checks is too big (%lu)"),
1844                                 interval);
1845                         exit(1);
1846                 }
1847                 sb->s_checkinterval = interval;
1848                 ext2fs_mark_super_dirty(fs);
1849                 printf(_("Setting interval between checks to %lu seconds\n"),
1850                        interval);
1851         }
1852         if (m_flag) {
1853                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
1854                                           ext2fs_blocks_count(sb) / 100.0);
1855                 ext2fs_mark_super_dirty(fs);
1856                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
1857                         reserved_ratio, ext2fs_r_blocks_count(sb));
1858         }
1859         if (r_flag) {
1860                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
1861                         com_err(program_name, 0,
1862                                 _("reserved blocks count is too big (%llu)"),
1863                                 reserved_blocks);
1864                         exit(1);
1865                 }
1866                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
1867                 ext2fs_mark_super_dirty(fs);
1868                 printf(_("Setting reserved blocks count to %llu\n"),
1869                        reserved_blocks);
1870         }
1871         if (s_flag == 1) {
1872                 if (sb->s_feature_ro_compat &
1873                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1874                         fputs(_("\nThe filesystem already has sparse "
1875                                 "superblocks.\n"), stderr);
1876                 else {
1877                         sb->s_feature_ro_compat |=
1878                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1879                         sb->s_state &= ~EXT2_VALID_FS;
1880                         ext2fs_mark_super_dirty(fs);
1881                         printf(_("\nSparse superblock flag set.  %s"),
1882                                _(please_fsck));
1883                 }
1884         }
1885         if (s_flag == 0) {
1886                 fputs(_("\nClearing the sparse superflag not supported.\n"),
1887                       stderr);
1888                 exit(1);
1889         }
1890         if (T_flag) {
1891                 sb->s_lastcheck = last_check_time;
1892                 ext2fs_mark_super_dirty(fs);
1893                 printf(_("Setting time filesystem last checked to %s\n"),
1894                        ctime(&last_check_time));
1895         }
1896         if (u_flag) {
1897                 sb->s_def_resuid = resuid;
1898                 ext2fs_mark_super_dirty(fs);
1899                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
1900         }
1901         if (L_flag) {
1902                 if (strlen(new_label) > sizeof(sb->s_volume_name))
1903                         fputs(_("Warning: label too long, truncating.\n"),
1904                               stderr);
1905                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1906                 strncpy(sb->s_volume_name, new_label,
1907                         sizeof(sb->s_volume_name));
1908                 ext2fs_mark_super_dirty(fs);
1909         }
1910         if (M_flag) {
1911                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1912                 strncpy(sb->s_last_mounted, new_last_mounted,
1913                         sizeof(sb->s_last_mounted));
1914                 ext2fs_mark_super_dirty(fs);
1915         }
1916         if (mntopts_cmd)
1917                 update_mntopts(fs, mntopts_cmd);
1918         if (features_cmd)
1919                 update_feature_set(fs, features_cmd);
1920         if (extended_cmd)
1921                 parse_extended_opts(fs, extended_cmd);
1922         if (journal_size || journal_device)
1923                 add_journal(fs);
1924
1925         if (Q_flag) {
1926                 if (mount_flags & EXT2_MF_MOUNTED) {
1927                         fputs(_("The quota feature may only be changed when "
1928                                 "the filesystem is unmounted.\n"), stderr);
1929                         exit(1);
1930                 }
1931                 handle_quota_options(fs);
1932         }
1933
1934         if (U_flag) {
1935                 int set_csum = 0;
1936                 dgrp_t i;
1937
1938                 if (sb->s_feature_ro_compat &
1939                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1940                         /*
1941                          * Determine if the block group checksums are
1942                          * correct so we know whether or not to set
1943                          * them later on.
1944                          */
1945                         for (i = 0; i < fs->group_desc_count; i++)
1946                                 if (!ext2fs_group_desc_csum_verify(fs, i))
1947                                         break;
1948                         if (i >= fs->group_desc_count)
1949                                 set_csum = 1;
1950                 }
1951                 if ((strcasecmp(new_UUID, "null") == 0) ||
1952                     (strcasecmp(new_UUID, "clear") == 0)) {
1953                         uuid_clear(sb->s_uuid);
1954                 } else if (strcasecmp(new_UUID, "time") == 0) {
1955                         uuid_generate_time(sb->s_uuid);
1956                 } else if (strcasecmp(new_UUID, "random") == 0) {
1957                         uuid_generate(sb->s_uuid);
1958                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1959                         com_err(program_name, 0, _("Invalid UUID format\n"));
1960                         exit(1);
1961                 }
1962                 if (set_csum) {
1963                         for (i = 0; i < fs->group_desc_count; i++)
1964                                 ext2fs_group_desc_csum_set(fs, i);
1965                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1966                 }
1967                 ext2fs_mark_super_dirty(fs);
1968         }
1969         if (I_flag) {
1970                 if (mount_flags & EXT2_MF_MOUNTED) {
1971                         fputs(_("The inode size may only be "
1972                                 "changed when the filesystem is "
1973                                 "unmounted.\n"), stderr);
1974                         exit(1);
1975                 }
1976                 if (fs->super->s_feature_incompat &
1977                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
1978                         fputs(_("Changing the inode size not supported for "
1979                                 "filesystems with the flex_bg\n"
1980                                 "feature enabled.\n"),
1981                               stderr);
1982                         exit(1);
1983                 }
1984                 /*
1985                  * We want to update group descriptor also
1986                  * with the new free inode count
1987                  */
1988                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1989                 if (resize_inode(fs, new_inode_size) == 0) {
1990                         printf(_("Setting inode size %lu\n"),
1991                                                         new_inode_size);
1992                 }
1993         }
1994
1995         if (l_flag)
1996                 list_super(sb);
1997         if (stride_set) {
1998                 sb->s_raid_stride = stride;
1999                 ext2fs_mark_super_dirty(fs);
2000                 printf(_("Setting stride size to %d\n"), stride);
2001         }
2002         if (stripe_width_set) {
2003                 sb->s_raid_stripe_width = stripe_width;
2004                 ext2fs_mark_super_dirty(fs);
2005                 printf(_("Setting stripe width to %d\n"), stripe_width);
2006         }
2007         if (ext_mount_opts) {
2008                 strncpy(fs->super->s_mount_opts, ext_mount_opts,
2009                         sizeof(fs->super->s_mount_opts));
2010                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2011                 ext2fs_mark_super_dirty(fs);
2012                 printf(_("Setting extended default mount options to '%s'\n"),
2013                        ext_mount_opts);
2014                 free(ext_mount_opts);
2015         }
2016         free(device_name);
2017         remove_error_table(&et_ext2_error_table);
2018         return (ext2fs_close(fs) ? 1 : 0);
2019 }