misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include "config.h"
  31 #include <fcntl.h>
  32 #include <grp.h>
  33 #ifdef HAVE_GETOPT_H
  34 #include <getopt.h>
  35 #else
  36 extern char *optarg;
  37 extern int optind;
  38 #endif
  39 #include <pwd.h>
  40 #include <stdio.h>
  41 #ifdef HAVE_STDLIB_H
  42 #include <stdlib.h>
  43 #endif
  44 #include <string.h>
  45 #include <time.h>
  46 #include <unistd.h>
  47 #include <sys/types.h>
  48 #include <libgen.h>
  49 #include <limits.h>
  50
  51 #include "ext2fs/ext2_fs.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "et/com_err.h"
  54 #include "uuid/uuid.h"
  55 #include "e2p/e2p.h"
  56 #include "jfs_user.h"
  57 #include "util.h"
  58 #include "blkid/blkid.h"
  59 #include "quota/mkquota.h"
  60
  61 #include "../version.h"
  62 #include "nls-enable.h"
  63
  64 #define QOPT_ENABLE     (1)
  65 #define QOPT_DISABLE    (-1)
  66
  67 extern int ask_yn(const char *string, int def);
  68
  69 const char *program_name = "tune2fs";
  70 char *device_name;
  71 char *new_label, *new_last_mounted, *new_UUID;
  72 char *io_options;
  73 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  74 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  75 static int I_flag;
  76 static int clear_mmp;
  77 static time_t last_check_time;
  78 static int print_label;
  79 static int max_mount_count, mount_count, mount_flags;
  80 static unsigned long interval;
  81 static blk64_t reserved_blocks;
  82 static double reserved_ratio;
  83 static unsigned long resgid, resuid;
  84 static unsigned short errors;
  85 static int open_flag;
  86 static char *features_cmd;
  87 static char *mntopts_cmd;
  88 static int stride, stripe_width;
  89 static int stride_set, stripe_width_set;
  90 static char *extended_cmd;
  91 static unsigned long new_inode_size;
  92 static char *ext_mount_opts;
  93 static int usrquota, grpquota;
  94
  95 int journal_size, journal_flags;
  96 char *journal_device;
  97
  98 static struct list_head blk_move_list;
  99
 100 struct blk_move {
 101         struct list_head list;
 102         blk64_t old_loc;
 103         blk64_t new_loc;
 104 };
 105
 106
 107 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 108
 109 #ifdef CONFIG_BUILD_FINDFS
 110 void do_findfs(int argc, char **argv);
 111 #endif
 112
 113 static void usage(void)
 114 {
 115         fprintf(stderr,
 116                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 117                   "[-g group]\n"
 118                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 119                   "\t[-m reserved_blocks_percent] "
 120                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 121                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 122                   "[-L volume_label]\n"
 123                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 124 #ifdef CONFIG_QUOTA
 125                   "\t[-Q quota_options]\n"
 126 #endif
 127                   "\t[-E extended-option[,...]] [-T last_check_time] "
 128                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 129         exit(1);
 130 }
 131
 132 static __u32 ok_features[3] = {
 133         /* Compat */
 134         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 135                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 136         /* Incompat */
 137         EXT2_FEATURE_INCOMPAT_FILETYPE |
 138                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 139                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 140                 EXT4_FEATURE_INCOMPAT_MMP,
 141         /* R/O compat */
 142         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 143                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 144                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 145                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 146                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 147 #ifdef CONFIG_QUOTA
 148                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 149 #endif
 150                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 151 };
 152
 153 static __u32 clear_ok_features[3] = {
 154         /* Compat */
 155         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 156                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 157                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 158         /* Incompat */
 159         EXT2_FEATURE_INCOMPAT_FILETYPE |
 160                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 161                 EXT4_FEATURE_INCOMPAT_MMP,
 162         /* R/O compat */
 163         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 164                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 165                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 166                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 167 #ifdef CONFIG_QUOTA
 168                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 169 #endif
 170                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 171 };
 172
 173 /*
 174  * Remove an external journal from the filesystem
 175  */
 176 static int remove_journal_device(ext2_filsys fs)
 177 {
 178         char            *journal_path;
 179         ext2_filsys     jfs;
 180         char            buf[1024];
 181         journal_superblock_t    *jsb;
 182         int             i, nr_users;
 183         errcode_t       retval;
 184         int             commit_remove_journal = 0;
 185         io_manager      io_ptr;
 186
 187         if (f_flag)
 188                 commit_remove_journal = 1; /* force removal even if error */
 189
 190         uuid_unparse(fs->super->s_journal_uuid, buf);
 191         journal_path = blkid_get_devname(NULL, "UUID", buf);
 192
 193         if (!journal_path) {
 194                 journal_path =
 195                         ext2fs_find_block_device(fs->super->s_journal_dev);
 196                 if (!journal_path)
 197                         goto no_valid_journal;
 198         }
 199
 200 #ifdef CONFIG_TESTIO_DEBUG
 201         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 202                 io_ptr = test_io_manager;
 203                 test_io_backing_manager = unix_io_manager;
 204         } else
 205 #endif
 206                 io_ptr = unix_io_manager;
 207         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 208                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 209                              fs->blocksize, io_ptr, &jfs);
 210         if (retval) {
 211                 com_err(program_name, retval, "%s",
 212                         _("while trying to open external journal"));
 213                 goto no_valid_journal;
 214         }
 215         if (!(jfs->super->s_feature_incompat &
 216               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 217                 fprintf(stderr, _("%s is not a journal device.\n"),
 218                         journal_path);
 219                 goto no_valid_journal;
 220         }
 221
 222         /* Get the journal superblock */
 223         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 224                 com_err(program_name, retval, "%s",
 225                         _("while reading journal superblock"));
 226                 goto no_valid_journal;
 227         }
 228
 229         jsb = (journal_superblock_t *) buf;
 230         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 231             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 232                 fputs(_("Journal superblock not found!\n"), stderr);
 233                 goto no_valid_journal;
 234         }
 235
 236         /* Find the filesystem UUID */
 237         nr_users = ntohl(jsb->s_nr_users);
 238         for (i = 0; i < nr_users; i++) {
 239                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 240                         break;
 241         }
 242         if (i >= nr_users) {
 243                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 244                       stderr);
 245                 commit_remove_journal = 1;
 246                 goto no_valid_journal;
 247         }
 248         nr_users--;
 249         for (i = 0; i < nr_users; i++)
 250                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 251         jsb->s_nr_users = htonl(nr_users);
 252
 253         /* Write back the journal superblock */
 254         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 255                 com_err(program_name, retval,
 256                         "while writing journal superblock.");
 257                 goto no_valid_journal;
 258         }
 259
 260         commit_remove_journal = 1;
 261
 262 no_valid_journal:
 263         if (commit_remove_journal == 0) {
 264                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 265                         "Use -f option to remove missing journal device.\n"),
 266                       stderr);
 267                 return 1;
 268         }
 269         fs->super->s_journal_dev = 0;
 270         uuid_clear(fs->super->s_journal_uuid);
 271         ext2fs_mark_super_dirty(fs);
 272         fputs(_("Journal removed\n"), stdout);
 273         free(journal_path);
 274
 275         return 0;
 276 }
 277
 278 /* Helper function for remove_journal_inode */
 279 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 280                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 281                                blk64_t ref_block EXT2FS_ATTR((unused)),
 282                                int ref_offset EXT2FS_ATTR((unused)),
 283                                void *private EXT2FS_ATTR((unused)))
 284 {
 285         blk64_t block;
 286         int     group;
 287
 288         block = *blocknr;
 289         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 290         group = ext2fs_group_of_blk2(fs, block);
 291         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 292         ext2fs_group_desc_csum_set(fs, group);
 293         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 294         return 0;
 295 }
 296
 297 /*
 298  * Remove the journal inode from the filesystem
 299  */
 300 static errcode_t remove_journal_inode(ext2_filsys fs)
 301 {
 302         struct ext2_inode       inode;
 303         errcode_t               retval;
 304         ino_t                   ino = fs->super->s_journal_inum;
 305
 306         retval = ext2fs_read_inode(fs, ino,  &inode);
 307         if (retval) {
 308                 com_err(program_name, retval, "%s",
 309                         _("while reading journal inode"));
 310                 return retval;
 311         }
 312         if (ino == EXT2_JOURNAL_INO) {
 313                 retval = ext2fs_read_bitmaps(fs);
 314                 if (retval) {
 315                         com_err(program_name, retval, "%s",
 316                                 _("while reading bitmaps"));
 317                         return retval;
 318                 }
 319                 retval = ext2fs_block_iterate3(fs, ino,
 320                                                BLOCK_FLAG_READ_ONLY, NULL,
 321                                                release_blocks_proc, NULL);
 322                 if (retval) {
 323                         com_err(program_name, retval, "%s",
 324                                 _("while clearing journal inode"));
 325                         return retval;
 326                 }
 327                 memset(&inode, 0, sizeof(inode));
 328                 ext2fs_mark_bb_dirty(fs);
 329                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 330         } else
 331                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 332         retval = ext2fs_write_inode(fs, ino, &inode);
 333         if (retval) {
 334                 com_err(program_name, retval, "%s",
 335                         _("while writing journal inode"));
 336                 return retval;
 337         }
 338         fs->super->s_journal_inum = 0;
 339         ext2fs_mark_super_dirty(fs);
 340
 341         return 0;
 342 }
 343
 344 /*
 345  * Update the default mount options
 346  */
 347 static int update_mntopts(ext2_filsys fs, char *mntopts)
 348 {
 349         struct ext2_super_block *sb = fs->super;
 350
 351         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 352                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 353                         mntopts);
 354                 return 1;
 355         }
 356         ext2fs_mark_super_dirty(fs);
 357
 358         return 0;
 359 }
 360
 361 static int check_fsck_needed(ext2_filsys fs)
 362 {
 363         if (fs->super->s_state & EXT2_VALID_FS)
 364                 return 0;
 365         printf("\n%s\n", _(please_fsck));
 366         if (mount_flags & EXT2_MF_READONLY)
 367                 printf(_("(and reboot afterwards!)\n"));
 368         return 1;
 369 }
 370
 371 static void request_fsck_afterwards(ext2_filsys fs)
 372 {
 373         static int requested = 0;
 374
 375         if (requested++)
 376                 return;
 377         fs->super->s_state &= ~EXT2_VALID_FS;
 378         printf("\n%s\n", _(please_fsck));
 379         if (mount_flags & EXT2_MF_READONLY)
 380                 printf("%s", _("(and reboot afterwards!)\n"));
 381 }
 382
 383 /*
 384  * Update the feature set as provided by the user.
 385  */
 386 static int update_feature_set(ext2_filsys fs, char *features)
 387 {
 388         struct ext2_super_block *sb = fs->super;
 389         struct ext2_group_desc *gd;
 390         __u32           old_features[3];
 391         dgrp_t          i;
 392         int             type_err;
 393         unsigned int    mask_err;
 394
 395 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 396                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 397 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 398                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 399 #define FEATURE_CHANGED(type, mask) ((mask) & \
 400                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 401
 402         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 403         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 404         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 405
 406         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 407                               ok_features, clear_ok_features,
 408                               &type_err, &mask_err)) {
 409                 if (!mask_err)
 410                         fprintf(stderr,
 411                                 _("Invalid filesystem option set: %s\n"),
 412                                 features);
 413                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 414                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 415                                           "not supported.\n"),
 416                                 e2p_feature2string(type_err &
 417                                                    E2P_FEATURE_TYPE_MASK,
 418                                                    mask_err));
 419                 else
 420                         fprintf(stderr, _("Setting filesystem feature '%s' "
 421                                           "not supported.\n"),
 422                                 e2p_feature2string(type_err, mask_err));
 423                 return 1;
 424         }
 425
 426         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 427                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 428                     !(mount_flags & EXT2_MF_READONLY)) {
 429                         fputs(_("The has_journal feature may only be "
 430                                 "cleared when the filesystem is\n"
 431                                 "unmounted or mounted "
 432                                 "read-only.\n"), stderr);
 433                         return 1;
 434                 }
 435                 if (sb->s_feature_incompat &
 436                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 437                         fputs(_("The needs_recovery flag is set.  "
 438                                 "Please run e2fsck before clearing\n"
 439                                 "the has_journal flag.\n"), stderr);
 440                         return 1;
 441                 }
 442                 if (sb->s_journal_inum) {
 443                         if (remove_journal_inode(fs))
 444                                 return 1;
 445                 }
 446                 if (sb->s_journal_dev) {
 447                         if (remove_journal_device(fs))
 448                                 return 1;
 449                 }
 450         }
 451         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 452                 int error;
 453
 454                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 455                     (mount_flags & EXT2_MF_READONLY)) {
 456                         fputs(_("The multiple mount protection feature can't\n"
 457                                 "be set if the filesystem is mounted or\n"
 458                                 "read-only.\n"), stderr);
 459                         return 1;
 460                 }
 461
 462                 error = ext2fs_mmp_init(fs);
 463                 if (error) {
 464                         fputs(_("\nError while enabling multiple mount "
 465                                 "protection feature."), stderr);
 466                         return 1;
 467                 }
 468
 469                 /*
 470                  * We want to update group desc with the new free blocks count
 471                  */
 472                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 473
 474                 printf(_("Multiple mount protection has been enabled "
 475                          "with update interval %ds.\n"),
 476                        sb->s_mmp_update_interval);
 477         }
 478
 479         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 480                 int error;
 481
 482                 if (mount_flags & EXT2_MF_READONLY) {
 483                         fputs(_("The multiple mount protection feature cannot\n"
 484                                 "be disabled if the filesystem is readonly.\n"),
 485                                 stderr);
 486                         return 1;
 487                 }
 488
 489                 error = ext2fs_read_bitmaps(fs);
 490                 if (error) {
 491                         fputs(_("Error while reading bitmaps\n"), stderr);
 492                         return 1;
 493                 }
 494
 495                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 496                 if (error) {
 497                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 498
 499                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 500                                 printf(_("Magic number in MMP block does not "
 501                                          "match. expected: %x, actual: %x\n"),
 502                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 503                         else
 504                                 com_err(program_name, error, "%s",
 505                                         _("while reading MMP block."));
 506                         goto mmp_error;
 507                 }
 508
 509                 /* We need to force out the group descriptors as well */
 510                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 511                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
 512 mmp_error:
 513                 sb->s_mmp_block = 0;
 514                 sb->s_mmp_update_interval = 0;
 515         }
 516
 517         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 518                 /*
 519                  * If adding a journal flag, let the create journal
 520                  * code below handle setting the flag and creating the
 521                  * journal.  We supply a default size if necessary.
 522                  */
 523                 if (!journal_size)
 524                         journal_size = -1;
 525                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 526         }
 527
 528         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 529                 if (!sb->s_def_hash_version)
 530                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 531                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 532                         uuid_generate((unsigned char *) sb->s_hash_seed);
 533         }
 534
 535         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 536                 if (ext2fs_check_desc(fs)) {
 537                         fputs(_("Clearing the flex_bg flag would "
 538                                 "cause the the filesystem to be\n"
 539                                 "inconsistent.\n"), stderr);
 540                         return 1;
 541                 }
 542         }
 543
 544         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 545                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 546                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 547                     !(mount_flags & EXT2_MF_READONLY)) {
 548                         fputs(_("The huge_file feature may only be "
 549                                 "cleared when the filesystem is\n"
 550                                 "unmounted or mounted "
 551                                 "read-only.\n"), stderr);
 552                         return 1;
 553                 }
 554         }
 555
 556         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 557                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 558                 for (i = 0; i < fs->group_desc_count; i++) {
 559                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 560                         gd->bg_itable_unused = 0;
 561                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 562                         ext2fs_group_desc_csum_set(fs, i);
 563                 }
 564                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 565         }
 566
 567         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 568                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 569                 for (i = 0; i < fs->group_desc_count; i++) {
 570                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 571                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 572                                 /*
 573                                  * XXX what we really should do is zap
 574                                  * uninitialized inode tables instead.
 575                                  */
 576                                 request_fsck_afterwards(fs);
 577                                 break;
 578                         }
 579                         gd->bg_itable_unused = 0;
 580                         gd->bg_flags = 0;
 581                         gd->bg_checksum = 0;
 582                 }
 583                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 584         }
 585
 586         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 587                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 588                 /*
 589                  * Set the Q_flag here and handle the quota options in the code
 590                  * below.
 591                  */
 592                 if (!Q_flag) {
 593                         Q_flag = 1;
 594                         /* Enable both user quota and group quota by default */
 595                         usrquota = QOPT_ENABLE;
 596                         grpquota = QOPT_ENABLE;
 597                 }
 598                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 599         }
 600
 601         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 602                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 603                 /*
 604                  * Set the Q_flag here and handle the quota options in the code
 605                  * below.
 606                  */
 607                 if (Q_flag)
 608                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 609                                 "arguments.\n"), stderr);
 610                 Q_flag = 1;
 611                 /* Disable both user quota and group quota by default */
 612                 usrquota = QOPT_DISABLE;
 613                 grpquota = QOPT_DISABLE;
 614         }
 615
 616         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 617             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 618              sb->s_feature_incompat))
 619                 ext2fs_update_dynamic_rev(fs);
 620
 621         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 622                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 623             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 624                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 625             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 626                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 627             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 628                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 629             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 630                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 631                 request_fsck_afterwards(fs);
 632
 633         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 634             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 635             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 636                 ext2fs_mark_super_dirty(fs);
 637
 638         return 0;
 639 }
 640
 641 /*
 642  * Add a journal to the filesystem.
 643  */
 644 static int add_journal(ext2_filsys fs)
 645 {
 646         unsigned long journal_blocks;
 647         errcode_t       retval;
 648         ext2_filsys     jfs;
 649         io_manager      io_ptr;
 650
 651         if (fs->super->s_feature_compat &
 652             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 653                 fputs(_("The filesystem already has a journal.\n"), stderr);
 654                 goto err;
 655         }
 656         if (journal_device) {
 657                 check_plausibility(journal_device);
 658                 check_mount(journal_device, 0, _("journal"));
 659 #ifdef CONFIG_TESTIO_DEBUG
 660                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 661                         io_ptr = test_io_manager;
 662                         test_io_backing_manager = unix_io_manager;
 663                 } else
 664 #endif
 665                         io_ptr = unix_io_manager;
 666                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 667                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 668                                      fs->blocksize, io_ptr, &jfs);
 669                 if (retval) {
 670                         com_err(program_name, retval,
 671                                 _("\n\twhile trying to open journal on %s\n"),
 672                                 journal_device);
 673                         goto err;
 674                 }
 675                 printf(_("Creating journal on device %s: "),
 676                        journal_device);
 677                 fflush(stdout);
 678
 679                 retval = ext2fs_add_journal_device(fs, jfs);
 680                 ext2fs_close(jfs);
 681                 if (retval) {
 682                         com_err(program_name, retval,
 683                                 _("while adding filesystem to journal on %s"),
 684                                 journal_device);
 685                         goto err;
 686                 }
 687                 fputs(_("done\n"), stdout);
 688         } else if (journal_size) {
 689                 fputs(_("Creating journal inode: "), stdout);
 690                 fflush(stdout);
 691                 journal_blocks = figure_journal_size(journal_size, fs);
 692
 693                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 694                                                   journal_flags);
 695                 if (retval) {
 696                         fprintf(stderr, "\n");
 697                         com_err(program_name, retval, "%s",
 698                                 _("\n\twhile trying to create journal file"));
 699                         return retval;
 700                 } else
 701                         fputs(_("done\n"), stdout);
 702                 /*
 703                  * If the filesystem wasn't mounted, we need to force
 704                  * the block group descriptors out.
 705                  */
 706                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 707                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 708         }
 709         print_check_message(fs->super->s_max_mnt_count,
 710                             fs->super->s_checkinterval);
 711         return 0;
 712
 713 err:
 714         free(journal_device);
 715         return 1;
 716 }
 717
 718 static void handle_quota_options(ext2_filsys fs)
 719 {
 720         quota_ctx_t qctx;
 721         ext2_ino_t qf_ino;
 722
 723         if (!usrquota && !grpquota)
 724                 /* Nothing to do. */
 725                 return;
 726
 727         quota_init_context(&qctx, fs, -1);
 728
 729         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
 730                 quota_compute_usage(qctx);
 731
 732         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 733                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
 734                                                 QFMT_VFS_V1)) > 0)
 735                         quota_update_limits(qctx, qf_ino, USRQUOTA);
 736                 quota_write_inode(qctx, USRQUOTA);
 737         } else if (usrquota == QOPT_DISABLE) {
 738                 quota_remove_inode(fs, USRQUOTA);
 739         }
 740
 741         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 742                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
 743                                                 QFMT_VFS_V1)) > 0)
 744                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
 745                 quota_write_inode(qctx, GRPQUOTA);
 746         } else if (grpquota == QOPT_DISABLE) {
 747                 quota_remove_inode(fs, GRPQUOTA);
 748         }
 749
 750         quota_release_context(&qctx);
 751
 752         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 753                 fprintf(stderr, "%s", _("\nWarning: the quota feature is still "
 754                                   "under development\n"
 755                                   "See https://ext4.wiki.kernel.org/"
 756                                   "index.php/Quota for more information\n\n"));
 757                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 758                 ext2fs_mark_super_dirty(fs);
 759         } else if (!fs->super->s_usr_quota_inum &&
 760                    !fs->super->s_grp_quota_inum) {
 761                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 762                 ext2fs_mark_super_dirty(fs);
 763         }
 764
 765         return;
 766 }
 767
 768 static void parse_quota_opts(const char *opts)
 769 {
 770         char    *buf, *token, *next, *p;
 771         int     len;
 772
 773         len = strlen(opts);
 774         buf = malloc(len+1);
 775         if (!buf) {
 776                 fputs(_("Couldn't allocate memory to parse quota "
 777                         "options!\n"), stderr);
 778                 exit(1);
 779         }
 780         strcpy(buf, opts);
 781         for (token = buf; token && *token; token = next) {
 782                 p = strchr(token, ',');
 783                 next = 0;
 784                 if (p) {
 785                         *p = 0;
 786                         next = p+1;
 787                 }
 788
 789                 if (strcmp(token, "usrquota") == 0) {
 790                         usrquota = QOPT_ENABLE;
 791                 } else if (strcmp(token, "^usrquota") == 0) {
 792                         usrquota = QOPT_DISABLE;
 793                 } else if (strcmp(token, "grpquota") == 0) {
 794                         grpquota = QOPT_ENABLE;
 795                 } else if (strcmp(token, "^grpquota") == 0) {
 796                         grpquota = QOPT_DISABLE;
 797                 } else {
 798                         fputs(_("\nBad quota options specified.\n\n"
 799                                 "Following valid quota options are available "
 800                                 "(pass by separating with comma):\n"
 801                                 "\t[^]usrquota\n"
 802                                 "\t[^]grpquota\n"
 803                                 "\n\n"), stderr);
 804                         free(buf);
 805                         exit(1);
 806                 }
 807         }
 808         free(buf);
 809 }
 810
 811
 812
 813 static void parse_e2label_options(int argc, char ** argv)
 814 {
 815         if ((argc < 2) || (argc > 3)) {
 816                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 817                 exit(1);
 818         }
 819         io_options = strchr(argv[1], '?');
 820         if (io_options)
 821                 *io_options++ = 0;
 822         device_name = blkid_get_devname(NULL, argv[1], NULL);
 823         if (!device_name) {
 824                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 825                         argv[1]);
 826                 exit(1);
 827         }
 828         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 829         if (argc == 3) {
 830                 open_flag |= EXT2_FLAG_RW;
 831                 L_flag = 1;
 832                 new_label = argv[2];
 833         } else
 834                 print_label++;
 835 }
 836
 837 static time_t parse_time(char *str)
 838 {
 839         struct  tm      ts;
 840
 841         if (strcmp(str, "now") == 0) {
 842                 return (time(0));
 843         }
 844         memset(&ts, 0, sizeof(ts));
 845 #ifdef HAVE_STRPTIME
 846         strptime(str, "%Y%m%d%H%M%S", &ts);
 847 #else
 848         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 849                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 850         ts.tm_year -= 1900;
 851         ts.tm_mon -= 1;
 852         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 853             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 854             ts.tm_min > 59 || ts.tm_sec > 61)
 855                 ts.tm_mday = 0;
 856 #endif
 857         if (ts.tm_mday == 0) {
 858                 com_err(program_name, 0,
 859                         _("Couldn't parse date/time specifier: %s"),
 860                         str);
 861                 usage();
 862         }
 863         ts.tm_isdst = -1;
 864         return (mktime(&ts));
 865 }
 866
 867 static void parse_tune2fs_options(int argc, char **argv)
 868 {
 869         int c;
 870         char *tmp;
 871         struct group *gr;
 872         struct passwd *pw;
 873         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:";
 874
 875 #ifdef CONFIG_QUOTA
 876         strcat(optstring, "Q:");
 877 #endif
 878         open_flag = 0;
 879
 880         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 881         while ((c = getopt(argc, argv, optstring)) != EOF)
 882                 switch (c) {
 883                 case 'c':
 884                         max_mount_count = strtol(optarg, &tmp, 0);
 885                         if (*tmp || max_mount_count > 16000) {
 886                                 com_err(program_name, 0,
 887                                         _("bad mounts count - %s"),
 888                                         optarg);
 889                                 usage();
 890                         }
 891                         if (max_mount_count == 0)
 892                                 max_mount_count = -1;
 893                         c_flag = 1;
 894                         open_flag = EXT2_FLAG_RW;
 895                         break;
 896                 case 'C':
 897                         mount_count = strtoul(optarg, &tmp, 0);
 898                         if (*tmp || mount_count > 16000) {
 899                                 com_err(program_name, 0,
 900                                         _("bad mounts count - %s"),
 901                                         optarg);
 902                                 usage();
 903                         }
 904                         C_flag = 1;
 905                         open_flag = EXT2_FLAG_RW;
 906                         break;
 907                 case 'e':
 908                         if (strcmp(optarg, "continue") == 0)
 909                                 errors = EXT2_ERRORS_CONTINUE;
 910                         else if (strcmp(optarg, "remount-ro") == 0)
 911                                 errors = EXT2_ERRORS_RO;
 912                         else if (strcmp(optarg, "panic") == 0)
 913                                 errors = EXT2_ERRORS_PANIC;
 914                         else {
 915                                 com_err(program_name, 0,
 916                                         _("bad error behavior - %s"),
 917                                         optarg);
 918                                 usage();
 919                         }
 920                         e_flag = 1;
 921                         open_flag = EXT2_FLAG_RW;
 922                         break;
 923                 case 'E':
 924                         extended_cmd = optarg;
 925                         open_flag |= EXT2_FLAG_RW;
 926                         break;
 927                 case 'f': /* Force */
 928                         f_flag = 1;
 929                         break;
 930                 case 'g':
 931                         resgid = strtoul(optarg, &tmp, 0);
 932                         if (*tmp) {
 933                                 gr = getgrnam(optarg);
 934                                 if (gr == NULL)
 935                                         tmp = optarg;
 936                                 else {
 937                                         resgid = gr->gr_gid;
 938                                         *tmp = 0;
 939                                 }
 940                         }
 941                         if (*tmp) {
 942                                 com_err(program_name, 0,
 943                                         _("bad gid/group name - %s"),
 944                                         optarg);
 945                                 usage();
 946                         }
 947                         g_flag = 1;
 948                         open_flag = EXT2_FLAG_RW;
 949                         break;
 950                 case 'i':
 951                         interval = strtoul(optarg, &tmp, 0);
 952                         switch (*tmp) {
 953                         case 's':
 954                                 tmp++;
 955                                 break;
 956                         case '\0':
 957                         case 'd':
 958                         case 'D': /* days */
 959                                 interval *= 86400;
 960                                 if (*tmp != '\0')
 961                                         tmp++;
 962                                 break;
 963                         case 'm':
 964                         case 'M': /* months! */
 965                                 interval *= 86400 * 30;
 966                                 tmp++;
 967                                 break;
 968                         case 'w':
 969                         case 'W': /* weeks */
 970                                 interval *= 86400 * 7;
 971                                 tmp++;
 972                                 break;
 973                         }
 974                         if (*tmp) {
 975                                 com_err(program_name, 0,
 976                                         _("bad interval - %s"), optarg);
 977                                 usage();
 978                         }
 979                         i_flag = 1;
 980                         open_flag = EXT2_FLAG_RW;
 981                         break;
 982                 case 'j':
 983                         if (!journal_size)
 984                                 journal_size = -1;
 985                         open_flag = EXT2_FLAG_RW;
 986                         break;
 987                 case 'J':
 988                         parse_journal_opts(optarg);
 989                         open_flag = EXT2_FLAG_RW;
 990                         break;
 991                 case 'l':
 992                         l_flag = 1;
 993                         break;
 994                 case 'L':
 995                         new_label = optarg;
 996                         L_flag = 1;
 997                         open_flag |= EXT2_FLAG_RW |
 998                                 EXT2_FLAG_JOURNAL_DEV_OK;
 999                         break;
1000                 case 'm':
1001                         reserved_ratio = strtod(optarg, &tmp);
1002                         if (*tmp || reserved_ratio > 50 ||
1003                             reserved_ratio < 0) {
1004                                 com_err(program_name, 0,
1005                                         _("bad reserved block ratio - %s"),
1006                                         optarg);
1007                                 usage();
1008                         }
1009                         m_flag = 1;
1010                         open_flag = EXT2_FLAG_RW;
1011                         break;
1012                 case 'M':
1013                         new_last_mounted = optarg;
1014                         M_flag = 1;
1015                         open_flag = EXT2_FLAG_RW;
1016                         break;
1017                 case 'o':
1018                         if (mntopts_cmd) {
1019                                 com_err(program_name, 0, "%s",
1020                                         _("-o may only be specified once"));
1021                                 usage();
1022                         }
1023                         mntopts_cmd = optarg;
1024                         open_flag = EXT2_FLAG_RW;
1025                         break;
1026                 case 'O':
1027                         if (features_cmd) {
1028                                 com_err(program_name, 0, "%s",
1029                                         _("-O may only be specified once"));
1030                                 usage();
1031                         }
1032                         features_cmd = optarg;
1033                         open_flag = EXT2_FLAG_RW;
1034                         break;
1035 #ifdef CONFIG_QUOTA
1036                 case 'Q':
1037                         Q_flag = 1;
1038                         parse_quota_opts(optarg);
1039                         open_flag = EXT2_FLAG_RW;
1040                         break;
1041 #endif
1042                 case 'r':
1043                         reserved_blocks = strtoul(optarg, &tmp, 0);
1044                         if (*tmp) {
1045                                 com_err(program_name, 0,
1046                                         _("bad reserved blocks count - %s"),
1047                                         optarg);
1048                                 usage();
1049                         }
1050                         r_flag = 1;
1051                         open_flag = EXT2_FLAG_RW;
1052                         break;
1053                 case 's': /* Deprecated */
1054                         s_flag = atoi(optarg);
1055                         open_flag = EXT2_FLAG_RW;
1056                         break;
1057                 case 'T':
1058                         T_flag = 1;
1059                         last_check_time = parse_time(optarg);
1060                         open_flag = EXT2_FLAG_RW;
1061                         break;
1062                 case 'u':
1063                                 resuid = strtoul(optarg, &tmp, 0);
1064                                 if (*tmp) {
1065                                         pw = getpwnam(optarg);
1066                                         if (pw == NULL)
1067                                                 tmp = optarg;
1068                                         else {
1069                                                 resuid = pw->pw_uid;
1070                                                 *tmp = 0;
1071                                         }
1072                                 }
1073                                 if (*tmp) {
1074                                         com_err(program_name, 0,
1075                                                 _("bad uid/user name - %s"),
1076                                                 optarg);
1077                                         usage();
1078                                 }
1079                                 u_flag = 1;
1080                                 open_flag = EXT2_FLAG_RW;
1081                                 break;
1082                 case 'U':
1083                         new_UUID = optarg;
1084                         U_flag = 1;
1085                         open_flag = EXT2_FLAG_RW |
1086                                 EXT2_FLAG_JOURNAL_DEV_OK;
1087                         break;
1088                 case 'I':
1089                         new_inode_size = strtoul(optarg, &tmp, 0);
1090                         if (*tmp) {
1091                                 com_err(program_name, 0,
1092                                         _("bad inode size - %s"),
1093                                         optarg);
1094                                 usage();
1095                         }
1096                         if (!((new_inode_size &
1097                                (new_inode_size - 1)) == 0)) {
1098                                 com_err(program_name, 0,
1099                                         _("Inode size must be a "
1100                                           "power of two- %s"),
1101                                         optarg);
1102                                 usage();
1103                         }
1104                         open_flag = EXT2_FLAG_RW;
1105                         I_flag = 1;
1106                         break;
1107                 default:
1108                         usage();
1109                 }
1110         if (optind < argc - 1 || optind == argc)
1111                 usage();
1112         if (!open_flag && !l_flag)
1113                 usage();
1114         io_options = strchr(argv[optind], '?');
1115         if (io_options)
1116                 *io_options++ = 0;
1117         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1118         if (!device_name) {
1119                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1120                         argv[optind]);
1121                 exit(1);
1122         }
1123 }
1124
1125 #ifdef CONFIG_BUILD_FINDFS
1126 void do_findfs(int argc, char **argv)
1127 {
1128         char    *dev;
1129
1130         if ((argc != 2) ||
1131             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1132                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1133                 exit(2);
1134         }
1135         dev = blkid_get_devname(NULL, argv[1], NULL);
1136         if (!dev) {
1137                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1138                         argv[1]);
1139                 exit(1);
1140         }
1141         puts(dev);
1142         exit(0);
1143 }
1144 #endif
1145
1146 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1147 {
1148         char    *buf, *token, *next, *p, *arg;
1149         int     len, hash_alg;
1150         int     r_usage = 0;
1151
1152         len = strlen(opts);
1153         buf = malloc(len+1);
1154         if (!buf) {
1155                 fprintf(stderr, "%s",
1156                         _("Couldn't allocate memory to parse options!\n"));
1157                 return 1;
1158         }
1159         strcpy(buf, opts);
1160         for (token = buf; token && *token; token = next) {
1161                 p = strchr(token, ',');
1162                 next = 0;
1163                 if (p) {
1164                         *p = 0;
1165                         next = p+1;
1166                 }
1167                 arg = strchr(token, '=');
1168                 if (arg) {
1169                         *arg = 0;
1170                         arg++;
1171                 }
1172                 if (strcmp(token, "clear-mmp") == 0 ||
1173                     strcmp(token, "clear_mmp") == 0) {
1174                         clear_mmp = 1;
1175                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1176                         unsigned long intv;
1177                         if (!arg) {
1178                                 r_usage++;
1179                                 continue;
1180                         }
1181                         intv = strtoul(arg, &p, 0);
1182                         if (*p) {
1183                                 fprintf(stderr,
1184                                         _("Invalid mmp_update_interval: %s\n"),
1185                                         arg);
1186                                 r_usage++;
1187                                 continue;
1188                         }
1189                         if (intv == 0) {
1190                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1191                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1192                                 fprintf(stderr,
1193                                         _("mmp_update_interval too big: %lu\n"),
1194                                         intv);
1195                                 r_usage++;
1196                                 continue;
1197                         }
1198                         printf(P_("Setting multiple mount protection update "
1199                                   "interval to %lu second\n",
1200                                   "Setting multiple mount protection update "
1201                                   "interval to %lu seconds\n", intv),
1202                                intv);
1203                         fs->super->s_mmp_update_interval = intv;
1204                         ext2fs_mark_super_dirty(fs);
1205                 } else if (!strcmp(token, "test_fs")) {
1206                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1207                         printf("Setting test filesystem flag\n");
1208                         ext2fs_mark_super_dirty(fs);
1209                 } else if (!strcmp(token, "^test_fs")) {
1210                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1211                         printf("Clearing test filesystem flag\n");
1212                         ext2fs_mark_super_dirty(fs);
1213                 } else if (strcmp(token, "stride") == 0) {
1214                         if (!arg) {
1215                                 r_usage++;
1216                                 continue;
1217                         }
1218                         stride = strtoul(arg, &p, 0);
1219                         if (*p) {
1220                                 fprintf(stderr,
1221                                         _("Invalid RAID stride: %s\n"),
1222                                         arg);
1223                                 r_usage++;
1224                                 continue;
1225                         }
1226                         stride_set = 1;
1227                 } else if (strcmp(token, "stripe-width") == 0 ||
1228                            strcmp(token, "stripe_width") == 0) {
1229                         if (!arg) {
1230                                 r_usage++;
1231                                 continue;
1232                         }
1233                         stripe_width = strtoul(arg, &p, 0);
1234                         if (*p) {
1235                                 fprintf(stderr,
1236                                         _("Invalid RAID stripe-width: %s\n"),
1237                                         arg);
1238                                 r_usage++;
1239                                 continue;
1240                         }
1241                         stripe_width_set = 1;
1242                 } else if (strcmp(token, "hash_alg") == 0 ||
1243                            strcmp(token, "hash-alg") == 0) {
1244                         if (!arg) {
1245                                 r_usage++;
1246                                 continue;
1247                         }
1248                         hash_alg = e2p_string2hash(arg);
1249                         if (hash_alg < 0) {
1250                                 fprintf(stderr,
1251                                         _("Invalid hash algorithm: %s\n"),
1252                                         arg);
1253                                 r_usage++;
1254                                 continue;
1255                         }
1256                         fs->super->s_def_hash_version = hash_alg;
1257                         printf(_("Setting default hash algorithm "
1258                                  "to %s (%d)\n"),
1259                                arg, hash_alg);
1260                         ext2fs_mark_super_dirty(fs);
1261                 } else if (!strcmp(token, "mount_opts")) {
1262                         if (!arg) {
1263                                 r_usage++;
1264                                 continue;
1265                         }
1266                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1267                                 fprintf(stderr,
1268                                         "Extended mount options too long\n");
1269                                 continue;
1270                         }
1271                         ext_mount_opts = strdup(arg);
1272                 } else
1273                         r_usage++;
1274         }
1275         if (r_usage) {
1276                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1277                         "Extended options are separated by commas, "
1278                         "and may take an argument which\n"
1279                         "\tis set off by an equals ('=') sign.\n\n"
1280                         "Valid extended options are:\n"
1281                         "\tclear_mmp\n"
1282                         "\thash_alg=<hash algorithm>\n"
1283                         "\tmount_opts=<extended default mount options>\n"
1284                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1285                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1286                         "\ttest_fs\n"
1287                         "\t^test_fs\n"));
1288                 free(buf);
1289                 return 1;
1290         }
1291         free(buf);
1292
1293         return 0;
1294 }
1295
1296 /*
1297  * Fill in the block bitmap bmap with the information regarding the
1298  * blocks to be moved
1299  */
1300 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1301                             ext2fs_block_bitmap bmap)
1302 {
1303         dgrp_t i;
1304         int retval;
1305         ext2_badblocks_list bb_list = 0;
1306         blk64_t j, needed_blocks = 0;
1307         blk64_t start_blk, end_blk;
1308
1309         retval = ext2fs_read_bb_inode(fs, &bb_list);
1310         if (retval)
1311                 return retval;
1312
1313         for (i = 0; i < fs->group_desc_count; i++) {
1314                 start_blk = ext2fs_inode_table_loc(fs, i) +
1315                                         fs->inode_blocks_per_group;
1316
1317                 end_blk = ext2fs_inode_table_loc(fs, i) +
1318                                         new_ino_blks_per_grp;
1319
1320                 for (j = start_blk; j < end_blk; j++) {
1321                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1322                                 /*
1323                                  * IF the block is a bad block we fail
1324                                  */
1325                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1326                                         ext2fs_badblocks_list_free(bb_list);
1327                                         return ENOSPC;
1328                                 }
1329
1330                                 ext2fs_mark_block_bitmap2(bmap, j);
1331                         } else {
1332                                 /*
1333                                  * We are going to use this block for
1334                                  * inode table. So mark them used.
1335                                  */
1336                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1337                         }
1338                 }
1339                 needed_blocks += end_blk - start_blk;
1340         }
1341
1342         ext2fs_badblocks_list_free(bb_list);
1343         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1344                 return ENOSPC;
1345
1346         return 0;
1347 }
1348
1349 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
1350 {
1351         dgrp_t group;
1352         group = ext2fs_group_of_blk2(fs, blk);
1353         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1354                 return 1;
1355         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1356                 return 1;
1357         return 0;
1358 }
1359
1360 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
1361 {
1362         blk64_t start_blk, end_blk;
1363         start_blk = fs->super->s_first_data_block +
1364                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1365         /*
1366          * We cannot get new block beyond end_blk for for the last block group
1367          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1368          */
1369         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1370         if (blk >= start_blk && blk <= end_blk)
1371                 return 1;
1372         return 0;
1373 }
1374
1375 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1376 {
1377
1378         char *buf;
1379         dgrp_t group = 0;
1380         errcode_t retval;
1381         int meta_data = 0;
1382         blk64_t blk, new_blk, goal;
1383         struct blk_move *bmv;
1384
1385         retval = ext2fs_get_mem(fs->blocksize, &buf);
1386         if (retval)
1387                 return retval;
1388
1389         for (new_blk = blk = fs->super->s_first_data_block;
1390              blk < ext2fs_blocks_count(fs->super); blk++) {
1391                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1392                         continue;
1393
1394                 if (ext2fs_is_meta_block(fs, blk)) {
1395                         /*
1396                          * If the block is mapping a fs meta data block
1397                          * like group desc/block bitmap/inode bitmap. We
1398                          * should find a block in the same group and fix
1399                          * the respective fs metadata pointers. Otherwise
1400                          * fail
1401                          */
1402                         group = ext2fs_group_of_blk2(fs, blk);
1403                         goal = ext2fs_group_first_block2(fs, group);
1404                         meta_data = 1;
1405
1406                 } else {
1407                         goal = new_blk;
1408                 }
1409                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1410                 if (retval)
1411                         goto err_out;
1412
1413                 /* new fs meta data block should be in the same group */
1414                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1415                         retval = ENOSPC;
1416                         goto err_out;
1417                 }
1418
1419                 /* Mark this block as allocated */
1420                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1421
1422                 /* Add it to block move list */
1423                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1424                 if (retval)
1425                         goto err_out;
1426
1427                 bmv->old_loc = blk;
1428                 bmv->new_loc = new_blk;
1429
1430                 list_add(&(bmv->list), &blk_move_list);
1431
1432                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1433                 if (retval)
1434                         goto err_out;
1435
1436                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1437                 if (retval)
1438                         goto err_out;
1439         }
1440
1441 err_out:
1442         ext2fs_free_mem(&buf);
1443         return retval;
1444 }
1445
1446 static blk64_t translate_block(blk64_t blk)
1447 {
1448         struct list_head *entry;
1449         struct blk_move *bmv;
1450
1451         list_for_each(entry, &blk_move_list) {
1452                 bmv = list_entry(entry, struct blk_move, list);
1453                 if (bmv->old_loc == blk)
1454                         return bmv->new_loc;
1455         }
1456
1457         return 0;
1458 }
1459
1460 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1461                          blk64_t *block_nr,
1462                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1463                          blk64_t ref_block EXT2FS_ATTR((unused)),
1464                          int ref_offset EXT2FS_ATTR((unused)),
1465                          void *priv_data)
1466 {
1467         int ret = 0;
1468         blk64_t new_blk;
1469         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1470
1471         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1472                 return 0;
1473         new_blk = translate_block(*block_nr);
1474         if (new_blk) {
1475                 *block_nr = new_blk;
1476                 /*
1477                  * This will force the ext2fs_write_inode in the iterator
1478                  */
1479                 ret |= BLOCK_CHANGED;
1480         }
1481
1482         return ret;
1483 }
1484
1485 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1486 {
1487         errcode_t retval = 0;
1488         ext2_ino_t ino;
1489         blk64_t blk;
1490         char *block_buf = 0;
1491         struct ext2_inode inode;
1492         ext2_inode_scan scan = NULL;
1493
1494         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1495         if (retval)
1496                 return retval;
1497
1498         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1499         if (retval)
1500                 goto err_out;
1501
1502         while (1) {
1503                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1504                 if (retval)
1505                         goto err_out;
1506
1507                 if (!ino)
1508                         break;
1509
1510                 if (inode.i_links_count == 0)
1511                         continue; /* inode not in use */
1512
1513                 /* FIXME!!
1514                  * If we end up modifying the journal inode
1515                  * the sb->s_jnl_blocks will differ. But a
1516                  * subsequent e2fsck fixes that.
1517                  * Do we need to fix this ??
1518                  */
1519
1520                 if (ext2fs_file_acl_block(fs, &inode) &&
1521                     ext2fs_test_block_bitmap2(bmap,
1522                                         ext2fs_file_acl_block(fs, &inode))) {
1523                         blk = translate_block(ext2fs_file_acl_block(fs,
1524                                                                     &inode));
1525                         if (!blk)
1526                                 continue;
1527
1528                         ext2fs_file_acl_block_set(fs, &inode, blk);
1529
1530                         /*
1531                          * Write the inode to disk so that inode table
1532                          * resizing can work
1533                          */
1534                         retval = ext2fs_write_inode(fs, ino, &inode);
1535                         if (retval)
1536                                 goto err_out;
1537                 }
1538
1539                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
1540                         continue;
1541
1542                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1543                                                process_block, bmap);
1544                 if (retval)
1545                         goto err_out;
1546
1547         }
1548
1549 err_out:
1550         ext2fs_free_mem(&block_buf);
1551
1552         return retval;
1553 }
1554
1555 /*
1556  * We need to scan for inode and block bitmaps that may need to be
1557  * moved.  This can take place if the filesystem was formatted for
1558  * RAID arrays using the mke2fs's extended option "stride".
1559  */
1560 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1561 {
1562         dgrp_t i;
1563         blk64_t blk, new_blk;
1564
1565         for (i = 0; i < fs->group_desc_count; i++) {
1566                 blk = ext2fs_block_bitmap_loc(fs, i);
1567                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1568                         new_blk = translate_block(blk);
1569                         if (!new_blk)
1570                                 continue;
1571                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1572                 }
1573
1574                 blk = ext2fs_inode_bitmap_loc(fs, i);
1575                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1576                         new_blk = translate_block(blk);
1577                         if (!new_blk)
1578                                 continue;
1579                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1580                 }
1581         }
1582         return 0;
1583 }
1584
1585 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1586 {
1587         dgrp_t i;
1588         blk64_t blk;
1589         errcode_t retval;
1590         int new_ino_blks_per_grp;
1591         unsigned int j;
1592         char *old_itable = NULL, *new_itable = NULL;
1593         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1594         unsigned long old_ino_size;
1595         int old_itable_size, new_itable_size;
1596
1597         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1598         old_ino_size = EXT2_INODE_SIZE(fs->super);
1599
1600         new_ino_blks_per_grp = ext2fs_div_ceil(
1601                                         EXT2_INODES_PER_GROUP(fs->super) *
1602                                         new_ino_size,
1603                                         fs->blocksize);
1604
1605         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1606
1607         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1608         if (retval)
1609                 return retval;
1610
1611         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1612         if (retval)
1613                 goto err_out;
1614
1615         tmp_old_itable = old_itable;
1616         tmp_new_itable = new_itable;
1617
1618         for (i = 0; i < fs->group_desc_count; i++) {
1619                 blk = ext2fs_inode_table_loc(fs, i);
1620                 retval = io_channel_read_blk64(fs->io, blk,
1621                                 fs->inode_blocks_per_group, old_itable);
1622                 if (retval)
1623                         goto err_out;
1624
1625                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1626                         memcpy(new_itable, old_itable, old_ino_size);
1627
1628                         memset(new_itable+old_ino_size, 0,
1629                                         new_ino_size - old_ino_size);
1630
1631                         new_itable += new_ino_size;
1632                         old_itable += old_ino_size;
1633                 }
1634
1635                 /* reset the pointer */
1636                 old_itable = tmp_old_itable;
1637                 new_itable = tmp_new_itable;
1638
1639                 retval = io_channel_write_blk64(fs->io, blk,
1640                                         new_ino_blks_per_grp, new_itable);
1641                 if (retval)
1642                         goto err_out;
1643         }
1644
1645         /* Update the meta data */
1646         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1647         fs->super->s_inode_size = new_ino_size;
1648
1649 err_out:
1650         if (old_itable)
1651                 ext2fs_free_mem(&old_itable);
1652
1653         if (new_itable)
1654                 ext2fs_free_mem(&new_itable);
1655
1656         return retval;
1657 }
1658
1659 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1660 {
1661         blk64_t         blk;
1662         ext2_ino_t      ino;
1663         unsigned int    group = 0;
1664         unsigned int    count = 0;
1665         int             total_free = 0;
1666         int             group_free = 0;
1667
1668         /*
1669          * First calculate the block statistics
1670          */
1671         for (blk = fs->super->s_first_data_block;
1672              blk < ext2fs_blocks_count(fs->super); blk++) {
1673                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1674                         group_free++;
1675                         total_free++;
1676                 }
1677                 count++;
1678                 if ((count == fs->super->s_blocks_per_group) ||
1679                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1680                         ext2fs_bg_free_blocks_count_set(fs, group++,
1681                                                         group_free);
1682                         count = 0;
1683                         group_free = 0;
1684                 }
1685         }
1686         total_free = EXT2FS_C2B(fs, total_free);
1687         ext2fs_free_blocks_count_set(fs->super, total_free);
1688
1689         /*
1690          * Next, calculate the inode statistics
1691          */
1692         group_free = 0;
1693         total_free = 0;
1694         count = 0;
1695         group = 0;
1696
1697         /* Protect loop from wrap-around if s_inodes_count maxed */
1698         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1699                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1700                         group_free++;
1701                         total_free++;
1702                 }
1703                 count++;
1704                 if ((count == fs->super->s_inodes_per_group) ||
1705                     (ino == fs->super->s_inodes_count)) {
1706                         ext2fs_bg_free_inodes_count_set(fs, group++,
1707                                                         group_free);
1708                         count = 0;
1709                         group_free = 0;
1710                 }
1711         }
1712         fs->super->s_free_inodes_count = total_free;
1713         ext2fs_mark_super_dirty(fs);
1714         return 0;
1715 }
1716
1717 #define list_for_each_safe(pos, pnext, head) \
1718         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1719              pos = pnext, pnext = pos->next)
1720
1721 static void free_blk_move_list(void)
1722 {
1723         struct list_head *entry, *tmp;
1724         struct blk_move *bmv;
1725
1726         list_for_each_safe(entry, tmp, &blk_move_list) {
1727                 bmv = list_entry(entry, struct blk_move, list);
1728                 list_del(entry);
1729                 ext2fs_free_mem(&bmv);
1730         }
1731         return;
1732 }
1733
1734 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1735 {
1736         errcode_t retval;
1737         int new_ino_blks_per_grp;
1738         ext2fs_block_bitmap bmap;
1739
1740         retval = ext2fs_read_inode_bitmap(fs);
1741         if (retval) {
1742                 fputs(_("Failed to read inode bitmap\n"), stderr);
1743                 return retval;
1744         }
1745         retval = ext2fs_read_block_bitmap(fs);
1746         if (retval) {
1747                 fputs(_("Failed to read block bitmap\n"), stderr);
1748                 return retval;
1749         }
1750         INIT_LIST_HEAD(&blk_move_list);
1751
1752
1753         new_ino_blks_per_grp = ext2fs_div_ceil(
1754                                         EXT2_INODES_PER_GROUP(fs->super)*
1755                                         new_size,
1756                                         fs->blocksize);
1757
1758         /* We may change the file system.
1759          * Mark the file system as invalid so that
1760          * the user is prompted to run fsck.
1761          */
1762         fs->super->s_state &= ~EXT2_VALID_FS;
1763
1764         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1765                                                 &bmap);
1766         if (retval) {
1767                 fputs(_("Failed to allocate block bitmap when "
1768                                 "increasing inode size\n"), stderr);
1769                 return retval;
1770         }
1771         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1772         if (retval) {
1773                 fputs(_("Not enough space to increase inode size \n"), stderr);
1774                 goto err_out;
1775         }
1776         retval = move_block(fs, bmap);
1777         if (retval) {
1778                 fputs(_("Failed to relocate blocks during inode resize \n"),
1779                       stderr);
1780                 goto err_out;
1781         }
1782         retval = inode_scan_and_fix(fs, bmap);
1783         if (retval)
1784                 goto err_out_undo;
1785
1786         retval = group_desc_scan_and_fix(fs, bmap);
1787         if (retval)
1788                 goto err_out_undo;
1789
1790         retval = expand_inode_table(fs, new_size);
1791         if (retval)
1792                 goto err_out_undo;
1793
1794         ext2fs_calculate_summary_stats(fs);
1795
1796         fs->super->s_state |= EXT2_VALID_FS;
1797         /* mark super block and block bitmap as dirty */
1798         ext2fs_mark_super_dirty(fs);
1799         ext2fs_mark_bb_dirty(fs);
1800
1801 err_out:
1802         free_blk_move_list();
1803         ext2fs_free_block_bitmap(bmap);
1804
1805         return retval;
1806
1807 err_out_undo:
1808         free_blk_move_list();
1809         ext2fs_free_block_bitmap(bmap);
1810         fputs(_("Error in resizing the inode size.\n"
1811                         "Run e2undo to undo the "
1812                         "file system changes. \n"), stderr);
1813
1814         return retval;
1815 }
1816
1817 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1818 {
1819         errcode_t retval = 0;
1820         const char *tdb_dir;
1821         char *tdb_file;
1822         char *dev_name, *tmp_name;
1823
1824 #if 0 /* FIXME!! */
1825         /*
1826          * Configuration via a conf file would be
1827          * nice
1828          */
1829         profile_get_string(profile, "scratch_files",
1830                                         "directory", 0, 0,
1831                                         &tdb_dir);
1832 #endif
1833         tmp_name = strdup(name);
1834         if (!tmp_name) {
1835         alloc_fn_fail:
1836                 com_err(program_name, ENOMEM, "%s",
1837                         _("Couldn't allocate memory for tdb filename\n"));
1838                 return ENOMEM;
1839         }
1840         dev_name = basename(tmp_name);
1841
1842         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1843         if (!tdb_dir)
1844                 tdb_dir = "/var/lib/e2fsprogs";
1845
1846         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1847             access(tdb_dir, W_OK))
1848                 return 0;
1849
1850         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1851         if (!tdb_file)
1852                 goto alloc_fn_fail;
1853         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1854
1855         if (!access(tdb_file, F_OK)) {
1856                 if (unlink(tdb_file) < 0) {
1857                         retval = errno;
1858                         com_err(program_name, retval,
1859                                 _("while trying to delete %s"),
1860                                 tdb_file);
1861                         free(tdb_file);
1862                         return retval;
1863                 }
1864         }
1865
1866         set_undo_io_backing_manager(*io_ptr);
1867         *io_ptr = undo_io_manager;
1868         set_undo_io_backup_file(tdb_file);
1869         printf(_("To undo the tune2fs operation please run "
1870                  "the command\n    e2undo %s %s\n\n"),
1871                  tdb_file, name);
1872         free(tdb_file);
1873         free(tmp_name);
1874         return retval;
1875 }
1876
1877 int main(int argc, char **argv)
1878 {
1879         errcode_t retval;
1880         ext2_filsys fs;
1881         struct ext2_super_block *sb;
1882         io_manager io_ptr, io_ptr_orig = NULL;
1883         int rc = 0;
1884
1885 #ifdef ENABLE_NLS
1886         setlocale(LC_MESSAGES, "");
1887         setlocale(LC_CTYPE, "");
1888         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1889         textdomain(NLS_CAT_NAME);
1890         set_com_err_gettext(gettext);
1891 #endif
1892         if (argc && *argv)
1893                 program_name = *argv;
1894         add_error_table(&et_ext2_error_table);
1895
1896 #ifdef CONFIG_BUILD_FINDFS
1897         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1898                 do_findfs(argc, argv);
1899 #endif
1900         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1901                 parse_e2label_options(argc, argv);
1902         else
1903                 parse_tune2fs_options(argc, argv);
1904
1905 #ifdef CONFIG_TESTIO_DEBUG
1906         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1907                 io_ptr = test_io_manager;
1908                 test_io_backing_manager = unix_io_manager;
1909         } else
1910 #endif
1911                 io_ptr = unix_io_manager;
1912
1913 retry_open:
1914         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1915                 open_flag |= EXT2_FLAG_SKIP_MMP;
1916
1917         open_flag |= EXT2_FLAG_64BITS;
1918
1919         /* keep the filesystem struct around to dump MMP data */
1920         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1921
1922         retval = ext2fs_open2(device_name, io_options, open_flag,
1923                               0, 0, io_ptr, &fs);
1924         if (retval) {
1925                 com_err(program_name, retval,
1926                         _("while trying to open %s"),
1927                         device_name);
1928                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1929                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1930                         dump_mmp_msg(fs->mmp_buf,
1931                                      _("If you are sure the filesystem "
1932                                        "is not in use on any node, run:\n"
1933                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1934                 else if (retval == EXT2_ET_MMP_FAILED)
1935                         dump_mmp_msg(fs->mmp_buf, NULL);
1936                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1937                         fprintf(stderr,
1938                                 _("MMP block magic is bad. Try to fix it by "
1939                                   "running:\n'e2fsck -f %s'\n"), device_name);
1940                 else if (retval != EXT2_ET_MMP_FAILED)
1941                         fprintf(stderr, "%s",
1942                              _("Couldn't find valid filesystem superblock.\n"));
1943
1944                 ext2fs_free(fs);
1945                 exit(1);
1946         }
1947         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
1948
1949         if (I_flag && !io_ptr_orig) {
1950                 /*
1951                  * Check the inode size is right so we can issue an
1952                  * error message and bail before setting up the tdb
1953                  * file.
1954                  */
1955                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1956                         fprintf(stderr, _("The inode size is already %lu\n"),
1957                                 new_inode_size);
1958                         rc = 1;
1959                         goto closefs;
1960                 }
1961                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1962                         fprintf(stderr, "%s",
1963                                 _("Shrinking inode size is not supported\n"));
1964                         rc = 1;
1965                         goto closefs;
1966                 }
1967                 if (new_inode_size > fs->blocksize) {
1968                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
1969                                 new_inode_size, fs->blocksize);
1970                         rc = 1;
1971                         goto closefs;
1972                 }
1973
1974                 /*
1975                  * If inode resize is requested use the
1976                  * Undo I/O manager
1977                  */
1978                 io_ptr_orig = io_ptr;
1979                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1980                 if (retval) {
1981                         rc = 1;
1982                         goto closefs;
1983                 }
1984                 if (io_ptr != io_ptr_orig) {
1985                         ext2fs_close(fs);
1986                         goto retry_open;
1987                 }
1988         }
1989
1990         sb = fs->super;
1991         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1992
1993         if (print_label) {
1994                 /* For e2label emulation */
1995                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1996                        sb->s_volume_name);
1997                 remove_error_table(&et_ext2_error_table);
1998                 goto closefs;
1999         }
2000
2001         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2002         if (retval) {
2003                 com_err("ext2fs_check_if_mount", retval,
2004                         _("while determining whether %s is mounted."),
2005                         device_name);
2006                 rc = 1;
2007                 goto closefs;
2008         }
2009         /* Normally we only need to write out the superblock */
2010         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2011
2012         if (c_flag) {
2013                 sb->s_max_mnt_count = max_mount_count;
2014                 ext2fs_mark_super_dirty(fs);
2015                 printf(_("Setting maximal mount count to %d\n"),
2016                        max_mount_count);
2017         }
2018         if (C_flag) {
2019                 sb->s_mnt_count = mount_count;
2020                 ext2fs_mark_super_dirty(fs);
2021                 printf(_("Setting current mount count to %d\n"), mount_count);
2022         }
2023         if (e_flag) {
2024                 sb->s_errors = errors;
2025                 ext2fs_mark_super_dirty(fs);
2026                 printf(_("Setting error behavior to %d\n"), errors);
2027         }
2028         if (g_flag) {
2029                 sb->s_def_resgid = resgid;
2030                 ext2fs_mark_super_dirty(fs);
2031                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2032         }
2033         if (i_flag) {
2034                 if (interval >= (1ULL << 32)) {
2035                         com_err(program_name, 0,
2036                                 _("interval between checks is too big (%lu)"),
2037                                 interval);
2038                         rc = 1;
2039                         goto closefs;
2040                 }
2041                 sb->s_checkinterval = interval;
2042                 ext2fs_mark_super_dirty(fs);
2043                 printf(_("Setting interval between checks to %lu seconds\n"),
2044                        interval);
2045         }
2046         if (m_flag) {
2047                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2048                                           ext2fs_blocks_count(sb) / 100.0);
2049                 ext2fs_mark_super_dirty(fs);
2050                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2051                         reserved_ratio, ext2fs_r_blocks_count(sb));
2052         }
2053         if (r_flag) {
2054                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2055                         com_err(program_name, 0,
2056                                 _("reserved blocks count is too big (%llu)"),
2057                                 reserved_blocks);
2058                         rc = 1;
2059                         goto closefs;
2060                 }
2061                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2062                 ext2fs_mark_super_dirty(fs);
2063                 printf(_("Setting reserved blocks count to %llu\n"),
2064                        reserved_blocks);
2065         }
2066         if (s_flag == 1) {
2067                 if (sb->s_feature_ro_compat &
2068                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
2069                         fputs(_("\nThe filesystem already has sparse "
2070                                 "superblocks.\n"), stderr);
2071                 else {
2072                         sb->s_feature_ro_compat |=
2073                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2074                         sb->s_state &= ~EXT2_VALID_FS;
2075                         ext2fs_mark_super_dirty(fs);
2076                         printf(_("\nSparse superblock flag set.  %s"),
2077                                _(please_fsck));
2078                 }
2079         }
2080         if (s_flag == 0) {
2081                 fputs(_("\nClearing the sparse superflag not supported.\n"),
2082                       stderr);
2083                 rc = 1;
2084                 goto closefs;
2085         }
2086         if (T_flag) {
2087                 sb->s_lastcheck = last_check_time;
2088                 ext2fs_mark_super_dirty(fs);
2089                 printf(_("Setting time filesystem last checked to %s\n"),
2090                        ctime(&last_check_time));
2091         }
2092         if (u_flag) {
2093                 sb->s_def_resuid = resuid;
2094                 ext2fs_mark_super_dirty(fs);
2095                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2096         }
2097         if (L_flag) {
2098                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2099                         fputs(_("Warning: label too long, truncating.\n"),
2100                               stderr);
2101                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2102                 strncpy(sb->s_volume_name, new_label,
2103                         sizeof(sb->s_volume_name));
2104                 ext2fs_mark_super_dirty(fs);
2105         }
2106         if (M_flag) {
2107                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2108                 strncpy(sb->s_last_mounted, new_last_mounted,
2109                         sizeof(sb->s_last_mounted));
2110                 ext2fs_mark_super_dirty(fs);
2111         }
2112         if (mntopts_cmd) {
2113                 rc = update_mntopts(fs, mntopts_cmd);
2114                 if (rc)
2115                         goto closefs;
2116         }
2117         if (features_cmd) {
2118                 rc = update_feature_set(fs, features_cmd);
2119                 if (rc)
2120                         goto closefs;
2121         }
2122         if (extended_cmd) {
2123                 rc = parse_extended_opts(fs, extended_cmd);
2124                 if (rc)
2125                         goto closefs;
2126                 if (clear_mmp && !f_flag) {
2127                         fputs(_("Error in using clear_mmp. "
2128                                 "It must be used with -f\n"),
2129                               stderr);
2130                         goto closefs;
2131                 }
2132         }
2133         if (clear_mmp) {
2134                 rc = ext2fs_mmp_clear(fs);
2135                 goto closefs;
2136         }
2137         if (journal_size || journal_device) {
2138                 rc = add_journal(fs);
2139                 if (rc)
2140                         goto closefs;
2141         }
2142
2143         if (Q_flag) {
2144                 if (mount_flags & EXT2_MF_MOUNTED) {
2145                         fputs(_("The quota feature may only be changed when "
2146                                 "the filesystem is unmounted.\n"), stderr);
2147                         rc = 1;
2148                         goto closefs;
2149                 }
2150                 handle_quota_options(fs);
2151         }
2152
2153         if (U_flag) {
2154                 int set_csum = 0;
2155                 dgrp_t i;
2156
2157                 if (sb->s_feature_ro_compat &
2158                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2159                         /*
2160                          * Changing the UUID requires rewriting all metadata,
2161                          * which can race with a mounted fs.  Don't allow that.
2162                          */
2163                         if (mount_flags & EXT2_MF_MOUNTED) {
2164                                 fputs(_("The UUID may only be "
2165                                         "changed when the filesystem is "
2166                                         "unmounted.\n"), stderr);
2167                                 exit(1);
2168                         }
2169                         if (check_fsck_needed(fs))
2170                                 exit(1);
2171
2172                         /*
2173                          * Determine if the block group checksums are
2174                          * correct so we know whether or not to set
2175                          * them later on.
2176                          */
2177                         for (i = 0; i < fs->group_desc_count; i++)
2178                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2179                                         break;
2180                         if (i >= fs->group_desc_count)
2181                                 set_csum = 1;
2182                 }
2183                 if ((strcasecmp(new_UUID, "null") == 0) ||
2184                     (strcasecmp(new_UUID, "clear") == 0)) {
2185                         uuid_clear(sb->s_uuid);
2186                 } else if (strcasecmp(new_UUID, "time") == 0) {
2187                         uuid_generate_time(sb->s_uuid);
2188                 } else if (strcasecmp(new_UUID, "random") == 0) {
2189                         uuid_generate(sb->s_uuid);
2190                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2191                         com_err(program_name, 0, "%s",
2192                                 _("Invalid UUID format\n"));
2193                         rc = 1;
2194                         goto closefs;
2195                 }
2196                 if (set_csum) {
2197                         for (i = 0; i < fs->group_desc_count; i++)
2198                                 ext2fs_group_desc_csum_set(fs, i);
2199                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2200                 }
2201                 ext2fs_mark_super_dirty(fs);
2202         }
2203         if (I_flag) {
2204                 if (mount_flags & EXT2_MF_MOUNTED) {
2205                         fputs(_("The inode size may only be "
2206                                 "changed when the filesystem is "
2207                                 "unmounted.\n"), stderr);
2208                         rc = 1;
2209                         goto closefs;
2210                 }
2211                 if (fs->super->s_feature_incompat &
2212                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2213                         fputs(_("Changing the inode size not supported for "
2214                                 "filesystems with the flex_bg\n"
2215                                 "feature enabled.\n"),
2216                               stderr);
2217                         rc = 1;
2218                         goto closefs;
2219                 }
2220                 /*
2221                  * We want to update group descriptor also
2222                  * with the new free inode count
2223                  */
2224                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2225                 if (resize_inode(fs, new_inode_size) == 0) {
2226                         printf(_("Setting inode size %lu\n"),
2227                                                         new_inode_size);
2228                 } else {
2229                         printf("%s", _("Failed to change inode size\n"));
2230                         rc = 1;
2231                         goto closefs;
2232                 }
2233         }
2234
2235         if (l_flag)
2236                 list_super(sb);
2237         if (stride_set) {
2238                 sb->s_raid_stride = stride;
2239                 ext2fs_mark_super_dirty(fs);
2240                 printf(_("Setting stride size to %d\n"), stride);
2241         }
2242         if (stripe_width_set) {
2243                 sb->s_raid_stripe_width = stripe_width;
2244                 ext2fs_mark_super_dirty(fs);
2245                 printf(_("Setting stripe width to %d\n"), stripe_width);
2246         }
2247         if (ext_mount_opts) {
2248                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2249                         sizeof(fs->super->s_mount_opts));
2250                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2251                 ext2fs_mark_super_dirty(fs);
2252                 printf(_("Setting extended default mount options to '%s'\n"),
2253                        ext_mount_opts);
2254                 free(ext_mount_opts);
2255         }
2256         free(device_name);
2257         remove_error_table(&et_ext2_error_table);
2258
2259 closefs:
2260         if (rc) {
2261                 ext2fs_mmp_stop(fs);
2262                 exit(1);
2263         }
2264
2265         return (ext2fs_close(fs) ? 1 : 0);
2266 }