misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include "config.h"
  31 #include <fcntl.h>
  32 #include <grp.h>
  33 #ifdef HAVE_GETOPT_H
  34 #include <getopt.h>
  35 #else
  36 extern char *optarg;
  37 extern int optind;
  38 #endif
  39 #include <pwd.h>
  40 #include <stdio.h>
  41 #ifdef HAVE_STDLIB_H
  42 #include <stdlib.h>
  43 #endif
  44 #include <string.h>
  45 #include <time.h>
  46 #include <unistd.h>
  47 #include <sys/types.h>
  48 #include <libgen.h>
  49 #include <limits.h>
  50
  51 #include "ext2fs/ext2_fs.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "et/com_err.h"
  54 #include "uuid/uuid.h"
  55 #include "e2p/e2p.h"
  56 #include "jfs_user.h"
  57 #include "util.h"
  58 #include "blkid/blkid.h"
  59 #include "quota/mkquota.h"
  60
  61 #include "../version.h"
  62 #include "nls-enable.h"
  63
  64 #define QOPT_ENABLE     (1)
  65 #define QOPT_DISABLE    (-1)
  66
  67 extern int ask_yn(const char *string, int def);
  68
  69 const char *program_name = "tune2fs";
  70 char *device_name;
  71 char *new_label, *new_last_mounted, *new_UUID;
  72 char *io_options;
  73 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  74 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  75 static int I_flag;
  76 static int clear_mmp;
  77 static time_t last_check_time;
  78 static int print_label;
  79 static int max_mount_count, mount_count, mount_flags;
  80 static unsigned long interval;
  81 static blk64_t reserved_blocks;
  82 static double reserved_ratio;
  83 static unsigned long resgid, resuid;
  84 static unsigned short errors;
  85 static int open_flag;
  86 static char *features_cmd;
  87 static char *mntopts_cmd;
  88 static int stride, stripe_width;
  89 static int stride_set, stripe_width_set;
  90 static char *extended_cmd;
  91 static unsigned long new_inode_size;
  92 static char *ext_mount_opts;
  93 static int usrquota, grpquota;
  94
  95 int journal_size, journal_flags;
  96 char *journal_device;
  97
  98 static struct list_head blk_move_list;
  99
 100 struct blk_move {
 101         struct list_head list;
 102         blk64_t old_loc;
 103         blk64_t new_loc;
 104 };
 105
 106
 107 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 108
 109 #ifdef CONFIG_BUILD_FINDFS
 110 void do_findfs(int argc, char **argv);
 111 #endif
 112
 113 static void usage(void)
 114 {
 115         fprintf(stderr,
 116                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 117                   "[-g group]\n"
 118                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 119                   "\t[-m reserved_blocks_percent] "
 120                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 121                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 122                   "[-L volume_label]\n"
 123                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 124                   "\t[-E extended-option[,...]] [-T last_check_time] "
 125                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 126         exit(1);
 127 }
 128
 129 static __u32 ok_features[3] = {
 130         /* Compat */
 131         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 132                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 133         /* Incompat */
 134         EXT2_FEATURE_INCOMPAT_FILETYPE |
 135                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 136                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 137                 EXT4_FEATURE_INCOMPAT_MMP,
 138         /* R/O compat */
 139         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 140                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 141                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 142                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 143                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 144                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 145                 EXT4_FEATURE_RO_COMPAT_QUOTA
 146 };
 147
 148 static __u32 clear_ok_features[3] = {
 149         /* Compat */
 150         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 151                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 152                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 153         /* Incompat */
 154         EXT2_FEATURE_INCOMPAT_FILETYPE |
 155                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 156                 EXT4_FEATURE_INCOMPAT_MMP,
 157         /* R/O compat */
 158         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 159                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 160                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 161                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 162                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 163                 EXT4_FEATURE_RO_COMPAT_QUOTA
 164 };
 165
 166 /*
 167  * Remove an external journal from the filesystem
 168  */
 169 static int remove_journal_device(ext2_filsys fs)
 170 {
 171         char            *journal_path;
 172         ext2_filsys     jfs;
 173         char            buf[1024];
 174         journal_superblock_t    *jsb;
 175         int             i, nr_users;
 176         errcode_t       retval;
 177         int             commit_remove_journal = 0;
 178         io_manager      io_ptr;
 179
 180         if (f_flag)
 181                 commit_remove_journal = 1; /* force removal even if error */
 182
 183         uuid_unparse(fs->super->s_journal_uuid, buf);
 184         journal_path = blkid_get_devname(NULL, "UUID", buf);
 185
 186         if (!journal_path) {
 187                 journal_path =
 188                         ext2fs_find_block_device(fs->super->s_journal_dev);
 189                 if (!journal_path)
 190                         goto no_valid_journal;
 191         }
 192
 193 #ifdef CONFIG_TESTIO_DEBUG
 194         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 195                 io_ptr = test_io_manager;
 196                 test_io_backing_manager = unix_io_manager;
 197         } else
 198 #endif
 199                 io_ptr = unix_io_manager;
 200         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 201                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 202                              fs->blocksize, io_ptr, &jfs);
 203         if (retval) {
 204                 com_err(program_name, retval,
 205                         _("while trying to open external journal"));
 206                 goto no_valid_journal;
 207         }
 208         if (!(jfs->super->s_feature_incompat &
 209               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 210                 fprintf(stderr, _("%s is not a journal device.\n"),
 211                         journal_path);
 212                 goto no_valid_journal;
 213         }
 214
 215         /* Get the journal superblock */
 216         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 217                 com_err(program_name, retval,
 218                         _("while reading journal superblock"));
 219                 goto no_valid_journal;
 220         }
 221
 222         jsb = (journal_superblock_t *) buf;
 223         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 224             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 225                 fputs(_("Journal superblock not found!\n"), stderr);
 226                 goto no_valid_journal;
 227         }
 228
 229         /* Find the filesystem UUID */
 230         nr_users = ntohl(jsb->s_nr_users);
 231         for (i = 0; i < nr_users; i++) {
 232                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 233                         break;
 234         }
 235         if (i >= nr_users) {
 236                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 237                       stderr);
 238                 commit_remove_journal = 1;
 239                 goto no_valid_journal;
 240         }
 241         nr_users--;
 242         for (i = 0; i < nr_users; i++)
 243                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 244         jsb->s_nr_users = htonl(nr_users);
 245
 246         /* Write back the journal superblock */
 247         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 248                 com_err(program_name, retval,
 249                         "while writing journal superblock.");
 250                 goto no_valid_journal;
 251         }
 252
 253         commit_remove_journal = 1;
 254
 255 no_valid_journal:
 256         if (commit_remove_journal == 0) {
 257                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 258                         "Use -f option to remove missing journal device.\n"),
 259                       stderr);
 260                 return 1;
 261         }
 262         fs->super->s_journal_dev = 0;
 263         uuid_clear(fs->super->s_journal_uuid);
 264         ext2fs_mark_super_dirty(fs);
 265         fputs(_("Journal removed\n"), stdout);
 266         free(journal_path);
 267
 268         return 0;
 269 }
 270
 271 /* Helper function for remove_journal_inode */
 272 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 273                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 274                                blk64_t ref_block EXT2FS_ATTR((unused)),
 275                                int ref_offset EXT2FS_ATTR((unused)),
 276                                void *private EXT2FS_ATTR((unused)))
 277 {
 278         blk64_t block;
 279         int     group;
 280
 281         block = *blocknr;
 282         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 283         group = ext2fs_group_of_blk2(fs, block);
 284         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 285         ext2fs_group_desc_csum_set(fs, group);
 286         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 287         return 0;
 288 }
 289
 290 /*
 291  * Remove the journal inode from the filesystem
 292  */
 293 static errcode_t remove_journal_inode(ext2_filsys fs)
 294 {
 295         struct ext2_inode       inode;
 296         errcode_t               retval;
 297         ino_t                   ino = fs->super->s_journal_inum;
 298
 299         retval = ext2fs_read_inode(fs, ino,  &inode);
 300         if (retval) {
 301                 com_err(program_name, retval,
 302                         _("while reading journal inode"));
 303                 return retval;
 304         }
 305         if (ino == EXT2_JOURNAL_INO) {
 306                 retval = ext2fs_read_bitmaps(fs);
 307                 if (retval) {
 308                         com_err(program_name, retval,
 309                                 _("while reading bitmaps"));
 310                         return retval;
 311                 }
 312                 retval = ext2fs_block_iterate3(fs, ino,
 313                                                BLOCK_FLAG_READ_ONLY, NULL,
 314                                                release_blocks_proc, NULL);
 315                 if (retval) {
 316                         com_err(program_name, retval,
 317                                 _("while clearing journal inode"));
 318                         return retval;
 319                 }
 320                 memset(&inode, 0, sizeof(inode));
 321                 ext2fs_mark_bb_dirty(fs);
 322                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 323         } else
 324                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 325         retval = ext2fs_write_inode(fs, ino, &inode);
 326         if (retval) {
 327                 com_err(program_name, retval,
 328                         _("while writing journal inode"));
 329                 return retval;
 330         }
 331         fs->super->s_journal_inum = 0;
 332         ext2fs_mark_super_dirty(fs);
 333
 334         return 0;
 335 }
 336
 337 /*
 338  * Update the default mount options
 339  */
 340 static int update_mntopts(ext2_filsys fs, char *mntopts)
 341 {
 342         struct ext2_super_block *sb = fs->super;
 343
 344         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 345                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 346                         mntopts);
 347                 return 1;
 348         }
 349         ext2fs_mark_super_dirty(fs);
 350
 351         return 0;
 352 }
 353
 354 static void request_fsck_afterwards(ext2_filsys fs)
 355 {
 356         static int requested = 0;
 357
 358         if (requested++)
 359                 return;
 360         fs->super->s_state &= ~EXT2_VALID_FS;
 361         printf("\n%s\n", _(please_fsck));
 362         if (mount_flags & EXT2_MF_READONLY)
 363                 printf(_("(and reboot afterwards!)\n"));
 364 }
 365
 366 /*
 367  * Update the feature set as provided by the user.
 368  */
 369 static int update_feature_set(ext2_filsys fs, char *features)
 370 {
 371         struct ext2_super_block *sb = fs->super;
 372         struct ext2_group_desc *gd;
 373         __u32           old_features[3];
 374         int             i, type_err;
 375         unsigned int    mask_err;
 376
 377 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 378                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 379 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 380                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 381 #define FEATURE_CHANGED(type, mask) ((mask) & \
 382                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 383
 384         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 385         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 386         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 387
 388         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 389                               ok_features, clear_ok_features,
 390                               &type_err, &mask_err)) {
 391                 if (!mask_err)
 392                         fprintf(stderr,
 393                                 _("Invalid filesystem option set: %s\n"),
 394                                 features);
 395                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 396                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 397                                           "not supported.\n"),
 398                                 e2p_feature2string(type_err &
 399                                                    E2P_FEATURE_TYPE_MASK,
 400                                                    mask_err));
 401                 else
 402                         fprintf(stderr, _("Setting filesystem feature '%s' "
 403                                           "not supported.\n"),
 404                                 e2p_feature2string(type_err, mask_err));
 405                 return 1;
 406         }
 407
 408         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 409                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 410                     !(mount_flags & EXT2_MF_READONLY)) {
 411                         fputs(_("The has_journal feature may only be "
 412                                 "cleared when the filesystem is\n"
 413                                 "unmounted or mounted "
 414                                 "read-only.\n"), stderr);
 415                         return 1;
 416                 }
 417                 if (sb->s_feature_incompat &
 418                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 419                         fputs(_("The needs_recovery flag is set.  "
 420                                 "Please run e2fsck before clearing\n"
 421                                 "the has_journal flag.\n"), stderr);
 422                         return 1;
 423                 }
 424                 if (sb->s_journal_inum) {
 425                         if (remove_journal_inode(fs))
 426                                 return 1;
 427                 }
 428                 if (sb->s_journal_dev) {
 429                         if (remove_journal_device(fs))
 430                                 return 1;
 431                 }
 432         }
 433         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 434                 int error;
 435
 436                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 437                     (mount_flags & EXT2_MF_READONLY)) {
 438                         fputs(_("The multiple mount protection feature can't\n"
 439                                 "be set if the filesystem is mounted or\n"
 440                                 "read-only.\n"), stderr);
 441                         return 1;
 442                 }
 443
 444                 error = ext2fs_mmp_init(fs);
 445                 if (error) {
 446                         fputs(_("\nError while enabling multiple mount "
 447                                 "protection feature."), stderr);
 448                         return 1;
 449                 }
 450
 451                 /*
 452                  * We want to update group desc with the new free blocks count
 453                  */
 454                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 455
 456                 printf(_("Multiple mount protection has been enabled "
 457                          "with update interval %ds.\n"),
 458                        sb->s_mmp_update_interval);
 459         }
 460
 461         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 462                 int error;
 463
 464                 if (mount_flags & EXT2_MF_READONLY) {
 465                         fputs(_("The multiple mount protection feature cannot\n"
 466                                 "be disabled if the filesystem is readonly.\n"),
 467                                 stderr);
 468                         return 1;
 469                 }
 470
 471                 error = ext2fs_read_bitmaps(fs);
 472                 if (error) {
 473                         fputs(_("Error while reading bitmaps\n"), stderr);
 474                         return 1;
 475                 }
 476
 477                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 478                 if (error) {
 479                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 480
 481                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 482                                 printf(_("Magic number in MMP block does not "
 483                                          "match. expected: %x, actual: %x\n"),
 484                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 485                         else
 486                                 com_err(program_name, error,
 487                                         _("while reading MMP block."));
 488                         goto mmp_error;
 489                 }
 490
 491                 /* We need to force out the group descriptors as well */
 492                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 493                 ext2fs_block_alloc_stats(fs, sb->s_mmp_block, -1);
 494 mmp_error:
 495                 sb->s_mmp_block = 0;
 496                 sb->s_mmp_update_interval = 0;
 497         }
 498
 499         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 500                 /*
 501                  * If adding a journal flag, let the create journal
 502                  * code below handle setting the flag and creating the
 503                  * journal.  We supply a default size if necessary.
 504                  */
 505                 if (!journal_size)
 506                         journal_size = -1;
 507                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 508         }
 509
 510         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 511                 if (!sb->s_def_hash_version)
 512                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 513                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 514                         uuid_generate((unsigned char *) sb->s_hash_seed);
 515         }
 516
 517         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 518                 if (ext2fs_check_desc(fs)) {
 519                         fputs(_("Clearing the flex_bg flag would "
 520                                 "cause the the filesystem to be\n"
 521                                 "inconsistent.\n"), stderr);
 522                         return 1;
 523                 }
 524         }
 525
 526         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 527                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 528                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 529                     !(mount_flags & EXT2_MF_READONLY)) {
 530                         fputs(_("The huge_file feature may only be "
 531                                 "cleared when the filesystem is\n"
 532                                 "unmounted or mounted "
 533                                 "read-only.\n"), stderr);
 534                         return 1;
 535                 }
 536         }
 537
 538         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 539                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 540                 for (i = 0; i < fs->group_desc_count; i++) {
 541                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 542                         gd->bg_itable_unused = 0;
 543                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 544                         ext2fs_group_desc_csum_set(fs, i);
 545                 }
 546                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 547         }
 548
 549         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 550                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 551                 for (i = 0; i < fs->group_desc_count; i++) {
 552                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 553                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 554                                 /*
 555                                  * XXX what we really should do is zap
 556                                  * uninitialized inode tables instead.
 557                                  */
 558                                 request_fsck_afterwards(fs);
 559                                 break;
 560                         }
 561                         gd->bg_itable_unused = 0;
 562                         gd->bg_flags = 0;
 563                         gd->bg_checksum = 0;
 564                 }
 565                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 566         }
 567
 568         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 569                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 570                 /*
 571                  * Set the Q_flag here and handle the quota options in the code
 572                  * below.
 573                  */
 574                 if (!Q_flag) {
 575                         Q_flag = 1;
 576                         /* Enable both user quota and group quota by default */
 577                         usrquota = QOPT_ENABLE;
 578                         grpquota = QOPT_ENABLE;
 579                 }
 580                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 581         }
 582
 583         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 584                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 585                 /*
 586                  * Set the Q_flag here and handle the quota options in the code
 587                  * below.
 588                  */
 589                 if (Q_flag)
 590                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 591                                 "arguments.\n"), stderr);
 592                 Q_flag = 1;
 593                 /* Disable both user quota and group quota by default */
 594                 usrquota = QOPT_DISABLE;
 595                 grpquota = QOPT_DISABLE;
 596         }
 597
 598         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 599             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 600              sb->s_feature_incompat))
 601                 ext2fs_update_dynamic_rev(fs);
 602
 603         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 604                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 605             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 606                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 607             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 608                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 609             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 610                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 611             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 612                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 613                 request_fsck_afterwards(fs);
 614
 615         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 616             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 617             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 618                 ext2fs_mark_super_dirty(fs);
 619
 620         return 0;
 621 }
 622
 623 /*
 624  * Add a journal to the filesystem.
 625  */
 626 static int add_journal(ext2_filsys fs)
 627 {
 628         unsigned long journal_blocks;
 629         errcode_t       retval;
 630         ext2_filsys     jfs;
 631         io_manager      io_ptr;
 632
 633         if (fs->super->s_feature_compat &
 634             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 635                 fputs(_("The filesystem already has a journal.\n"), stderr);
 636                 goto err;
 637         }
 638         if (journal_device) {
 639                 check_plausibility(journal_device);
 640                 check_mount(journal_device, 0, _("journal"));
 641 #ifdef CONFIG_TESTIO_DEBUG
 642                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 643                         io_ptr = test_io_manager;
 644                         test_io_backing_manager = unix_io_manager;
 645                 } else
 646 #endif
 647                         io_ptr = unix_io_manager;
 648                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 649                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 650                                      fs->blocksize, io_ptr, &jfs);
 651                 if (retval) {
 652                         com_err(program_name, retval,
 653                                 _("\n\twhile trying to open journal on %s\n"),
 654                                 journal_device);
 655                         goto err;
 656                 }
 657                 printf(_("Creating journal on device %s: "),
 658                        journal_device);
 659                 fflush(stdout);
 660
 661                 retval = ext2fs_add_journal_device(fs, jfs);
 662                 ext2fs_close(jfs);
 663                 if (retval) {
 664                         com_err(program_name, retval,
 665                                 _("while adding filesystem to journal on %s"),
 666                                 journal_device);
 667                         goto err;
 668                 }
 669                 fputs(_("done\n"), stdout);
 670         } else if (journal_size) {
 671                 fputs(_("Creating journal inode: "), stdout);
 672                 fflush(stdout);
 673                 journal_blocks = figure_journal_size(journal_size, fs);
 674
 675                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 676                                                   journal_flags);
 677                 if (retval) {
 678                         fprintf(stderr, "\n");
 679                         com_err(program_name, retval,
 680                                 _("\n\twhile trying to create journal file"));
 681                         return retval;
 682                 } else
 683                         fputs(_("done\n"), stdout);
 684                 /*
 685                  * If the filesystem wasn't mounted, we need to force
 686                  * the block group descriptors out.
 687                  */
 688                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 689                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 690         }
 691         print_check_message(fs->super->s_max_mnt_count,
 692                             fs->super->s_checkinterval);
 693         return 0;
 694
 695 err:
 696         free(journal_device);
 697         return 1;
 698 }
 699
 700 void handle_quota_options(ext2_filsys fs)
 701 {
 702         quota_ctx_t qctx;
 703         ext2_ino_t qf_ino;
 704
 705         if (!usrquota && !grpquota)
 706                 /* Nothing to do. */
 707                 return;
 708
 709         quota_init_context(&qctx, fs, -1);
 710
 711         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
 712                 quota_compute_usage(qctx);
 713
 714         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 715                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
 716                                                 QFMT_VFS_V1)) > 0)
 717                         quota_update_limits(qctx, qf_ino, USRQUOTA);
 718                 quota_write_inode(qctx, USRQUOTA);
 719         } else if (usrquota == QOPT_DISABLE) {
 720                 quota_remove_inode(fs, USRQUOTA);
 721         }
 722
 723         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 724                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
 725                                                 QFMT_VFS_V1)) > 0)
 726                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
 727                 quota_write_inode(qctx, GRPQUOTA);
 728         } else if (grpquota == QOPT_DISABLE) {
 729                 quota_remove_inode(fs, GRPQUOTA);
 730         }
 731
 732         quota_release_context(&qctx);
 733
 734         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 735                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 736                 ext2fs_mark_super_dirty(fs);
 737         } else if ((usrquota == QOPT_DISABLE) && (grpquota == QOPT_DISABLE)) {
 738                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 739                 ext2fs_mark_super_dirty(fs);
 740         }
 741
 742         return;
 743 }
 744
 745 void parse_quota_opts(const char *opts)
 746 {
 747         char    *buf, *token, *next, *p;
 748         int     len;
 749
 750         len = strlen(opts);
 751         buf = malloc(len+1);
 752         if (!buf) {
 753                 fputs(_("Couldn't allocate memory to parse quota "
 754                         "options!\n"), stderr);
 755                 exit(1);
 756         }
 757         strcpy(buf, opts);
 758         for (token = buf; token && *token; token = next) {
 759                 p = strchr(token, ',');
 760                 next = 0;
 761                 if (p) {
 762                         *p = 0;
 763                         next = p+1;
 764                 }
 765
 766                 if (strcmp(token, "usrquota") == 0) {
 767                         usrquota = QOPT_ENABLE;
 768                 } else if (strcmp(token, "^usrquota") == 0) {
 769                         usrquota = QOPT_DISABLE;
 770                 } else if (strcmp(token, "grpquota") == 0) {
 771                         grpquota = QOPT_ENABLE;
 772                 } else if (strcmp(token, "^grpquota") == 0) {
 773                         grpquota = QOPT_DISABLE;
 774                 } else {
 775                         fputs(_("\nBad quota options specified.\n\n"
 776                                 "Following valid quota options are available "
 777                                 "(pass by separating with comma):\n"
 778                                 "\t[^]usrquota\n"
 779                                 "\t[^]grpquota\n"
 780                                 "\n\n"), stderr);
 781                         free(buf);
 782                         exit(1);
 783                 }
 784         }
 785         free(buf);
 786 }
 787
 788
 789
 790 static void parse_e2label_options(int argc, char ** argv)
 791 {
 792         if ((argc < 2) || (argc > 3)) {
 793                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 794                 exit(1);
 795         }
 796         io_options = strchr(argv[1], '?');
 797         if (io_options)
 798                 *io_options++ = 0;
 799         device_name = blkid_get_devname(NULL, argv[1], NULL);
 800         if (!device_name) {
 801                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 802                         argv[1]);
 803                 exit(1);
 804         }
 805         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 806         if (argc == 3) {
 807                 open_flag |= EXT2_FLAG_RW;
 808                 L_flag = 1;
 809                 new_label = argv[2];
 810         } else
 811                 print_label++;
 812 }
 813
 814 static time_t parse_time(char *str)
 815 {
 816         struct  tm      ts;
 817
 818         if (strcmp(str, "now") == 0) {
 819                 return (time(0));
 820         }
 821         memset(&ts, 0, sizeof(ts));
 822 #ifdef HAVE_STRPTIME
 823         strptime(str, "%Y%m%d%H%M%S", &ts);
 824 #else
 825         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 826                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 827         ts.tm_year -= 1900;
 828         ts.tm_mon -= 1;
 829         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 830             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 831             ts.tm_min > 59 || ts.tm_sec > 61)
 832                 ts.tm_mday = 0;
 833 #endif
 834         if (ts.tm_mday == 0) {
 835                 com_err(program_name, 0,
 836                         _("Couldn't parse date/time specifier: %s"),
 837                         str);
 838                 usage();
 839         }
 840         ts.tm_isdst = -1;
 841         return (mktime(&ts));
 842 }
 843
 844 static void parse_tune2fs_options(int argc, char **argv)
 845 {
 846         int c;
 847         char *tmp;
 848         struct group *gr;
 849         struct passwd *pw;
 850
 851         open_flag = 0;
 852
 853         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 854         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:Q:T:U:")) != EOF)
 855                 switch (c) {
 856                 case 'c':
 857                         max_mount_count = strtol(optarg, &tmp, 0);
 858                         if (*tmp || max_mount_count > 16000) {
 859                                 com_err(program_name, 0,
 860                                         _("bad mounts count - %s"),
 861                                         optarg);
 862                                 usage();
 863                         }
 864                         if (max_mount_count == 0)
 865                                 max_mount_count = -1;
 866                         c_flag = 1;
 867                         open_flag = EXT2_FLAG_RW;
 868                         break;
 869                 case 'C':
 870                         mount_count = strtoul(optarg, &tmp, 0);
 871                         if (*tmp || mount_count > 16000) {
 872                                 com_err(program_name, 0,
 873                                         _("bad mounts count - %s"),
 874                                         optarg);
 875                                 usage();
 876                         }
 877                         C_flag = 1;
 878                         open_flag = EXT2_FLAG_RW;
 879                         break;
 880                 case 'e':
 881                         if (strcmp(optarg, "continue") == 0)
 882                                 errors = EXT2_ERRORS_CONTINUE;
 883                         else if (strcmp(optarg, "remount-ro") == 0)
 884                                 errors = EXT2_ERRORS_RO;
 885                         else if (strcmp(optarg, "panic") == 0)
 886                                 errors = EXT2_ERRORS_PANIC;
 887                         else {
 888                                 com_err(program_name, 0,
 889                                         _("bad error behavior - %s"),
 890                                         optarg);
 891                                 usage();
 892                         }
 893                         e_flag = 1;
 894                         open_flag = EXT2_FLAG_RW;
 895                         break;
 896                 case 'E':
 897                         extended_cmd = optarg;
 898                         open_flag |= EXT2_FLAG_RW;
 899                         break;
 900                 case 'f': /* Force */
 901                         f_flag = 1;
 902                         break;
 903                 case 'g':
 904                         resgid = strtoul(optarg, &tmp, 0);
 905                         if (*tmp) {
 906                                 gr = getgrnam(optarg);
 907                                 if (gr == NULL)
 908                                         tmp = optarg;
 909                                 else {
 910                                         resgid = gr->gr_gid;
 911                                         *tmp = 0;
 912                                 }
 913                         }
 914                         if (*tmp) {
 915                                 com_err(program_name, 0,
 916                                         _("bad gid/group name - %s"),
 917                                         optarg);
 918                                 usage();
 919                         }
 920                         g_flag = 1;
 921                         open_flag = EXT2_FLAG_RW;
 922                         break;
 923                 case 'i':
 924                         interval = strtoul(optarg, &tmp, 0);
 925                         switch (*tmp) {
 926                         case 's':
 927                                 tmp++;
 928                                 break;
 929                         case '\0':
 930                         case 'd':
 931                         case 'D': /* days */
 932                                 interval *= 86400;
 933                                 if (*tmp != '\0')
 934                                         tmp++;
 935                                 break;
 936                         case 'm':
 937                         case 'M': /* months! */
 938                                 interval *= 86400 * 30;
 939                                 tmp++;
 940                                 break;
 941                         case 'w':
 942                         case 'W': /* weeks */
 943                                 interval *= 86400 * 7;
 944                                 tmp++;
 945                                 break;
 946                         }
 947                         if (*tmp) {
 948                                 com_err(program_name, 0,
 949                                         _("bad interval - %s"), optarg);
 950                                 usage();
 951                         }
 952                         i_flag = 1;
 953                         open_flag = EXT2_FLAG_RW;
 954                         break;
 955                 case 'j':
 956                         if (!journal_size)
 957                                 journal_size = -1;
 958                         open_flag = EXT2_FLAG_RW;
 959                         break;
 960                 case 'J':
 961                         parse_journal_opts(optarg);
 962                         open_flag = EXT2_FLAG_RW;
 963                         break;
 964                 case 'l':
 965                         l_flag = 1;
 966                         break;
 967                 case 'L':
 968                         new_label = optarg;
 969                         L_flag = 1;
 970                         open_flag |= EXT2_FLAG_RW |
 971                                 EXT2_FLAG_JOURNAL_DEV_OK;
 972                         break;
 973                 case 'm':
 974                         reserved_ratio = strtod(optarg, &tmp);
 975                         if (*tmp || reserved_ratio > 50 ||
 976                             reserved_ratio < 0) {
 977                                 com_err(program_name, 0,
 978                                         _("bad reserved block ratio - %s"),
 979                                         optarg);
 980                                 usage();
 981                         }
 982                         m_flag = 1;
 983                         open_flag = EXT2_FLAG_RW;
 984                         break;
 985                 case 'M':
 986                         new_last_mounted = optarg;
 987                         M_flag = 1;
 988                         open_flag = EXT2_FLAG_RW;
 989                         break;
 990                 case 'o':
 991                         if (mntopts_cmd) {
 992                                 com_err(program_name, 0,
 993                                         _("-o may only be specified once"));
 994                                 usage();
 995                         }
 996                         mntopts_cmd = optarg;
 997                         open_flag = EXT2_FLAG_RW;
 998                         break;
 999                 case 'O':
1000                         if (features_cmd) {
1001                                 com_err(program_name, 0,
1002                                         _("-O may only be specified once"));
1003                                 usage();
1004                         }
1005                         features_cmd = optarg;
1006                         open_flag = EXT2_FLAG_RW;
1007                         break;
1008                 case 'Q':
1009                         Q_flag = 1;
1010                         parse_quota_opts(optarg);
1011                         open_flag = EXT2_FLAG_RW;
1012                         break;
1013                 case 'r':
1014                         reserved_blocks = strtoul(optarg, &tmp, 0);
1015                         if (*tmp) {
1016                                 com_err(program_name, 0,
1017                                         _("bad reserved blocks count - %s"),
1018                                         optarg);
1019                                 usage();
1020                         }
1021                         r_flag = 1;
1022                         open_flag = EXT2_FLAG_RW;
1023                         break;
1024                 case 's': /* Deprecated */
1025                         s_flag = atoi(optarg);
1026                         open_flag = EXT2_FLAG_RW;
1027                         break;
1028                 case 'T':
1029                         T_flag = 1;
1030                         last_check_time = parse_time(optarg);
1031                         open_flag = EXT2_FLAG_RW;
1032                         break;
1033                 case 'u':
1034                                 resuid = strtoul(optarg, &tmp, 0);
1035                                 if (*tmp) {
1036                                         pw = getpwnam(optarg);
1037                                         if (pw == NULL)
1038                                                 tmp = optarg;
1039                                         else {
1040                                                 resuid = pw->pw_uid;
1041                                                 *tmp = 0;
1042                                         }
1043                                 }
1044                                 if (*tmp) {
1045                                         com_err(program_name, 0,
1046                                                 _("bad uid/user name - %s"),
1047                                                 optarg);
1048                                         usage();
1049                                 }
1050                                 u_flag = 1;
1051                                 open_flag = EXT2_FLAG_RW;
1052                                 break;
1053                 case 'U':
1054                         new_UUID = optarg;
1055                         U_flag = 1;
1056                         open_flag = EXT2_FLAG_RW |
1057                                 EXT2_FLAG_JOURNAL_DEV_OK;
1058                         break;
1059                 case 'I':
1060                         new_inode_size = strtoul(optarg, &tmp, 0);
1061                         if (*tmp) {
1062                                 com_err(program_name, 0,
1063                                         _("bad inode size - %s"),
1064                                         optarg);
1065                                 usage();
1066                         }
1067                         if (!((new_inode_size &
1068                                (new_inode_size - 1)) == 0)) {
1069                                 com_err(program_name, 0,
1070                                         _("Inode size must be a "
1071                                           "power of two- %s"),
1072                                         optarg);
1073                                 usage();
1074                         }
1075                         open_flag = EXT2_FLAG_RW;
1076                         I_flag = 1;
1077                         break;
1078                 default:
1079                         usage();
1080                 }
1081         if (optind < argc - 1 || optind == argc)
1082                 usage();
1083         if (!open_flag && !l_flag)
1084                 usage();
1085         io_options = strchr(argv[optind], '?');
1086         if (io_options)
1087                 *io_options++ = 0;
1088         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1089         if (!device_name) {
1090                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
1091                         argv[optind]);
1092                 exit(1);
1093         }
1094 }
1095
1096 #ifdef CONFIG_BUILD_FINDFS
1097 void do_findfs(int argc, char **argv)
1098 {
1099         char    *dev;
1100
1101         if ((argc != 2) ||
1102             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1103                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1104                 exit(2);
1105         }
1106         dev = blkid_get_devname(NULL, argv[1], NULL);
1107         if (!dev) {
1108                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1109                         argv[1]);
1110                 exit(1);
1111         }
1112         puts(dev);
1113         exit(0);
1114 }
1115 #endif
1116
1117 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1118 {
1119         char    *buf, *token, *next, *p, *arg;
1120         int     len, hash_alg;
1121         int     r_usage = 0;
1122
1123         len = strlen(opts);
1124         buf = malloc(len+1);
1125         if (!buf) {
1126                 fprintf(stderr,
1127                         _("Couldn't allocate memory to parse options!\n"));
1128                 return 1;
1129         }
1130         strcpy(buf, opts);
1131         for (token = buf; token && *token; token = next) {
1132                 p = strchr(token, ',');
1133                 next = 0;
1134                 if (p) {
1135                         *p = 0;
1136                         next = p+1;
1137                 }
1138                 arg = strchr(token, '=');
1139                 if (arg) {
1140                         *arg = 0;
1141                         arg++;
1142                 }
1143                 if (strcmp(token, "clear-mmp") == 0 ||
1144                     strcmp(token, "clear_mmp") == 0) {
1145                         clear_mmp = 1;
1146                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1147                         unsigned long interval;
1148                         if (!arg) {
1149                                 r_usage++;
1150                                 continue;
1151                         }
1152                         interval = strtoul(arg, &p, 0);
1153                         if (*p) {
1154                                 fprintf(stderr,
1155                                         _("Invalid mmp_update_interval: %s\n"),
1156                                         arg);
1157                                 r_usage++;
1158                                 continue;
1159                         }
1160                         if (interval == 0) {
1161                                 interval = EXT4_MMP_UPDATE_INTERVAL;
1162                         } else if (interval > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1163                                 fprintf(stderr,
1164                                         _("mmp_update_interval too big: %lu\n"),
1165                                         interval);
1166                                 r_usage++;
1167                                 continue;
1168                         }
1169                         printf(P_("Setting multiple mount protection update "
1170                                   "interval to %lu second\n",
1171                                   "Setting multiple mount protection update "
1172                                   "interval to %lu seconds\n", interval),
1173                                interval);
1174                         fs->super->s_mmp_update_interval = interval;
1175                         ext2fs_mark_super_dirty(fs);
1176                 } else if (!strcmp(token, "test_fs")) {
1177                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1178                         printf("Setting test filesystem flag\n");
1179                         ext2fs_mark_super_dirty(fs);
1180                 } else if (!strcmp(token, "^test_fs")) {
1181                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1182                         printf("Clearing test filesystem flag\n");
1183                         ext2fs_mark_super_dirty(fs);
1184                 } else if (strcmp(token, "stride") == 0) {
1185                         if (!arg) {
1186                                 r_usage++;
1187                                 continue;
1188                         }
1189                         stride = strtoul(arg, &p, 0);
1190                         if (*p) {
1191                                 fprintf(stderr,
1192                                         _("Invalid RAID stride: %s\n"),
1193                                         arg);
1194                                 r_usage++;
1195                                 continue;
1196                         }
1197                         stride_set = 1;
1198                 } else if (strcmp(token, "stripe-width") == 0 ||
1199                            strcmp(token, "stripe_width") == 0) {
1200                         if (!arg) {
1201                                 r_usage++;
1202                                 continue;
1203                         }
1204                         stripe_width = strtoul(arg, &p, 0);
1205                         if (*p) {
1206                                 fprintf(stderr,
1207                                         _("Invalid RAID stripe-width: %s\n"),
1208                                         arg);
1209                                 r_usage++;
1210                                 continue;
1211                         }
1212                         stripe_width_set = 1;
1213                 } else if (strcmp(token, "hash_alg") == 0 ||
1214                            strcmp(token, "hash-alg") == 0) {
1215                         if (!arg) {
1216                                 r_usage++;
1217                                 continue;
1218                         }
1219                         hash_alg = e2p_string2hash(arg);
1220                         if (hash_alg < 0) {
1221                                 fprintf(stderr,
1222                                         _("Invalid hash algorithm: %s\n"),
1223                                         arg);
1224                                 r_usage++;
1225                                 continue;
1226                         }
1227                         fs->super->s_def_hash_version = hash_alg;
1228                         printf(_("Setting default hash algorithm "
1229                                  "to %s (%d)\n"),
1230                                arg, hash_alg);
1231                         ext2fs_mark_super_dirty(fs);
1232                 } else if (!strcmp(token, "mount_opts")) {
1233                         if (!arg) {
1234                                 r_usage++;
1235                                 continue;
1236                         }
1237                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1238                                 fprintf(stderr,
1239                                         "Extended mount options too long\n");
1240                                 continue;
1241                         }
1242                         ext_mount_opts = strdup(arg);
1243                 } else
1244                         r_usage++;
1245         }
1246         if (r_usage) {
1247                 fprintf(stderr, _("\nBad options specified.\n\n"
1248                         "Extended options are separated by commas, "
1249                         "and may take an argument which\n"
1250                         "\tis set off by an equals ('=') sign.\n\n"
1251                         "Valid extended options are:\n"
1252                         "\tclear_mmp\n"
1253                         "\thash_alg=<hash algorithm>\n"
1254                         "\tmount_opts=<extended default mount options>\n"
1255                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1256                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1257                         "\ttest_fs\n"
1258                         "\t^test_fs\n"));
1259                 free(buf);
1260                 return 1;
1261         }
1262         free(buf);
1263
1264         return 0;
1265 }
1266
1267 /*
1268  * Fill in the block bitmap bmap with the information regarding the
1269  * blocks to be moved
1270  */
1271 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1272                             ext2fs_block_bitmap bmap)
1273 {
1274         dgrp_t i;
1275         int retval;
1276         ext2_badblocks_list bb_list = 0;
1277         blk64_t j, needed_blocks = 0;
1278         blk64_t start_blk, end_blk;
1279
1280         retval = ext2fs_read_bb_inode(fs, &bb_list);
1281         if (retval)
1282                 return retval;
1283
1284         for (i = 0; i < fs->group_desc_count; i++) {
1285                 start_blk = ext2fs_inode_table_loc(fs, i) +
1286                                         fs->inode_blocks_per_group;
1287
1288                 end_blk = ext2fs_inode_table_loc(fs, i) +
1289                                         new_ino_blks_per_grp;
1290
1291                 for (j = start_blk; j < end_blk; j++) {
1292                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1293                                 /*
1294                                  * IF the block is a bad block we fail
1295                                  */
1296                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1297                                         ext2fs_badblocks_list_free(bb_list);
1298                                         return ENOSPC;
1299                                 }
1300
1301                                 ext2fs_mark_block_bitmap2(bmap, j);
1302                         } else {
1303                                 /*
1304                                  * We are going to use this block for
1305                                  * inode table. So mark them used.
1306                                  */
1307                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1308                         }
1309                 }
1310                 needed_blocks += end_blk - start_blk;
1311         }
1312
1313         ext2fs_badblocks_list_free(bb_list);
1314         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1315                 return ENOSPC;
1316
1317         return 0;
1318 }
1319
1320 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1321 {
1322         dgrp_t group;
1323         group = ext2fs_group_of_blk(fs, blk);
1324         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1325                 return 1;
1326         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1327                 return 1;
1328         return 0;
1329 }
1330
1331 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1332 {
1333         blk_t start_blk, end_blk;
1334         start_blk = fs->super->s_first_data_block +
1335                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1336         /*
1337          * We cannot get new block beyond end_blk for for the last block group
1338          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1339          */
1340         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1341         if (blk >= start_blk && blk <= end_blk)
1342                 return 1;
1343         return 0;
1344 }
1345
1346 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1347 {
1348
1349         char *buf;
1350         dgrp_t group = 0;
1351         errcode_t retval;
1352         int meta_data = 0;
1353         blk64_t blk, new_blk, goal;
1354         struct blk_move *bmv;
1355
1356         retval = ext2fs_get_mem(fs->blocksize, &buf);
1357         if (retval)
1358                 return retval;
1359
1360         for (new_blk = blk = fs->super->s_first_data_block;
1361              blk < ext2fs_blocks_count(fs->super); blk++) {
1362                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1363                         continue;
1364
1365                 if (ext2fs_is_meta_block(fs, blk)) {
1366                         /*
1367                          * If the block is mapping a fs meta data block
1368                          * like group desc/block bitmap/inode bitmap. We
1369                          * should find a block in the same group and fix
1370                          * the respective fs metadata pointers. Otherwise
1371                          * fail
1372                          */
1373                         group = ext2fs_group_of_blk(fs, blk);
1374                         goal = ext2fs_group_first_block2(fs, group);
1375                         meta_data = 1;
1376
1377                 } else {
1378                         goal = new_blk;
1379                 }
1380                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1381                 if (retval)
1382                         goto err_out;
1383
1384                 /* new fs meta data block should be in the same group */
1385                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1386                         retval = ENOSPC;
1387                         goto err_out;
1388                 }
1389
1390                 /* Mark this block as allocated */
1391                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1392
1393                 /* Add it to block move list */
1394                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1395                 if (retval)
1396                         goto err_out;
1397
1398                 bmv->old_loc = blk;
1399                 bmv->new_loc = new_blk;
1400
1401                 list_add(&(bmv->list), &blk_move_list);
1402
1403                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1404                 if (retval)
1405                         goto err_out;
1406
1407                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1408                 if (retval)
1409                         goto err_out;
1410         }
1411
1412 err_out:
1413         ext2fs_free_mem(&buf);
1414         return retval;
1415 }
1416
1417 static blk64_t translate_block(blk64_t blk)
1418 {
1419         struct list_head *entry;
1420         struct blk_move *bmv;
1421
1422         list_for_each(entry, &blk_move_list) {
1423                 bmv = list_entry(entry, struct blk_move, list);
1424                 if (bmv->old_loc == blk)
1425                         return bmv->new_loc;
1426         }
1427
1428         return 0;
1429 }
1430
1431 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1432                          blk64_t *block_nr,
1433                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1434                          blk64_t ref_block EXT2FS_ATTR((unused)),
1435                          int ref_offset EXT2FS_ATTR((unused)),
1436                          void *priv_data)
1437 {
1438         int ret = 0;
1439         blk64_t new_blk;
1440         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1441
1442         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1443                 return 0;
1444         new_blk = translate_block(*block_nr);
1445         if (new_blk) {
1446                 *block_nr = new_blk;
1447                 /*
1448                  * This will force the ext2fs_write_inode in the iterator
1449                  */
1450                 ret |= BLOCK_CHANGED;
1451         }
1452
1453         return ret;
1454 }
1455
1456 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1457 {
1458         errcode_t retval = 0;
1459         ext2_ino_t ino;
1460         blk64_t blk;
1461         char *block_buf = 0;
1462         struct ext2_inode inode;
1463         ext2_inode_scan scan = NULL;
1464
1465         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1466         if (retval)
1467                 return retval;
1468
1469         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1470         if (retval)
1471                 goto err_out;
1472
1473         while (1) {
1474                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1475                 if (retval)
1476                         goto err_out;
1477
1478                 if (!ino)
1479                         break;
1480
1481                 if (inode.i_links_count == 0)
1482                         continue; /* inode not in use */
1483
1484                 /* FIXME!!
1485                  * If we end up modifying the journal inode
1486                  * the sb->s_jnl_blocks will differ. But a
1487                  * subsequent e2fsck fixes that.
1488                  * Do we need to fix this ??
1489                  */
1490
1491                 if (ext2fs_file_acl_block(fs, &inode) &&
1492                     ext2fs_test_block_bitmap2(bmap,
1493                                         ext2fs_file_acl_block(fs, &inode))) {
1494                         blk = translate_block(ext2fs_file_acl_block(fs,
1495                                                                     &inode));
1496                         if (!blk)
1497                                 continue;
1498
1499                         ext2fs_file_acl_block_set(fs, &inode, blk);
1500
1501                         /*
1502                          * Write the inode to disk so that inode table
1503                          * resizing can work
1504                          */
1505                         retval = ext2fs_write_inode(fs, ino, &inode);
1506                         if (retval)
1507                                 goto err_out;
1508                 }
1509
1510                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
1511                         continue;
1512
1513                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1514                                                process_block, bmap);
1515                 if (retval)
1516                         goto err_out;
1517
1518         }
1519
1520 err_out:
1521         ext2fs_free_mem(&block_buf);
1522
1523         return retval;
1524 }
1525
1526 /*
1527  * We need to scan for inode and block bitmaps that may need to be
1528  * moved.  This can take place if the filesystem was formatted for
1529  * RAID arrays using the mke2fs's extended option "stride".
1530  */
1531 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1532 {
1533         dgrp_t i;
1534         blk_t blk, new_blk;
1535
1536         for (i = 0; i < fs->group_desc_count; i++) {
1537                 blk = ext2fs_block_bitmap_loc(fs, i);
1538                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1539                         new_blk = translate_block(blk);
1540                         if (!new_blk)
1541                                 continue;
1542                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1543                 }
1544
1545                 blk = ext2fs_inode_bitmap_loc(fs, i);
1546                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1547                         new_blk = translate_block(blk);
1548                         if (!new_blk)
1549                                 continue;
1550                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1551                 }
1552         }
1553         return 0;
1554 }
1555
1556 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1557 {
1558         dgrp_t i;
1559         blk64_t blk;
1560         errcode_t retval;
1561         int new_ino_blks_per_grp;
1562         unsigned int j;
1563         char *old_itable = NULL, *new_itable = NULL;
1564         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1565         unsigned long old_ino_size;
1566         int old_itable_size, new_itable_size;
1567
1568         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1569         old_ino_size = EXT2_INODE_SIZE(fs->super);
1570
1571         new_ino_blks_per_grp = ext2fs_div_ceil(
1572                                         EXT2_INODES_PER_GROUP(fs->super) *
1573                                         new_ino_size,
1574                                         fs->blocksize);
1575
1576         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1577
1578         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1579         if (retval)
1580                 return retval;
1581
1582         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1583         if (retval)
1584                 goto err_out;
1585
1586         tmp_old_itable = old_itable;
1587         tmp_new_itable = new_itable;
1588
1589         for (i = 0; i < fs->group_desc_count; i++) {
1590                 blk = ext2fs_inode_table_loc(fs, i);
1591                 retval = io_channel_read_blk64(fs->io, blk,
1592                                 fs->inode_blocks_per_group, old_itable);
1593                 if (retval)
1594                         goto err_out;
1595
1596                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1597                         memcpy(new_itable, old_itable, old_ino_size);
1598
1599                         memset(new_itable+old_ino_size, 0,
1600                                         new_ino_size - old_ino_size);
1601
1602                         new_itable += new_ino_size;
1603                         old_itable += old_ino_size;
1604                 }
1605
1606                 /* reset the pointer */
1607                 old_itable = tmp_old_itable;
1608                 new_itable = tmp_new_itable;
1609
1610                 retval = io_channel_write_blk64(fs->io, blk,
1611                                         new_ino_blks_per_grp, new_itable);
1612                 if (retval)
1613                         goto err_out;
1614         }
1615
1616         /* Update the meta data */
1617         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1618         fs->super->s_inode_size = new_ino_size;
1619
1620 err_out:
1621         if (old_itable)
1622                 ext2fs_free_mem(&old_itable);
1623
1624         if (new_itable)
1625                 ext2fs_free_mem(&new_itable);
1626
1627         return retval;
1628 }
1629
1630 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1631 {
1632         blk64_t         blk;
1633         ext2_ino_t      ino;
1634         unsigned int    group = 0;
1635         unsigned int    count = 0;
1636         int             total_free = 0;
1637         int             group_free = 0;
1638
1639         /*
1640          * First calculate the block statistics
1641          */
1642         for (blk = fs->super->s_first_data_block;
1643              blk < ext2fs_blocks_count(fs->super); blk++) {
1644                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1645                         group_free++;
1646                         total_free++;
1647                 }
1648                 count++;
1649                 if ((count == fs->super->s_blocks_per_group) ||
1650                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1651                         ext2fs_bg_free_blocks_count_set(fs, group++,
1652                                                         group_free);
1653                         count = 0;
1654                         group_free = 0;
1655                 }
1656         }
1657         total_free = EXT2FS_C2B(fs, total_free);
1658         ext2fs_free_blocks_count_set(fs->super, total_free);
1659
1660         /*
1661          * Next, calculate the inode statistics
1662          */
1663         group_free = 0;
1664         total_free = 0;
1665         count = 0;
1666         group = 0;
1667
1668         /* Protect loop from wrap-around if s_inodes_count maxed */
1669         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1670                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1671                         group_free++;
1672                         total_free++;
1673                 }
1674                 count++;
1675                 if ((count == fs->super->s_inodes_per_group) ||
1676                     (ino == fs->super->s_inodes_count)) {
1677                         ext2fs_bg_free_inodes_count_set(fs, group++,
1678                                                         group_free);
1679                         count = 0;
1680                         group_free = 0;
1681                 }
1682         }
1683         fs->super->s_free_inodes_count = total_free;
1684         ext2fs_mark_super_dirty(fs);
1685         return 0;
1686 }
1687
1688 #define list_for_each_safe(pos, pnext, head) \
1689         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1690              pos = pnext, pnext = pos->next)
1691
1692 static void free_blk_move_list(void)
1693 {
1694         struct list_head *entry, *tmp;
1695         struct blk_move *bmv;
1696
1697         list_for_each_safe(entry, tmp, &blk_move_list) {
1698                 bmv = list_entry(entry, struct blk_move, list);
1699                 list_del(entry);
1700                 ext2fs_free_mem(&bmv);
1701         }
1702         return;
1703 }
1704
1705 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1706 {
1707         errcode_t retval;
1708         int new_ino_blks_per_grp;
1709         ext2fs_block_bitmap bmap;
1710
1711         retval = ext2fs_read_inode_bitmap(fs);
1712         if (retval) {
1713                 fputs(_("Failed to read inode bitmap\n"), stderr);
1714                 return retval;
1715         }
1716         retval = ext2fs_read_block_bitmap(fs);
1717         if (retval) {
1718                 fputs(_("Failed to read block bitmap\n"), stderr);
1719                 return retval;
1720         }
1721         INIT_LIST_HEAD(&blk_move_list);
1722
1723
1724         new_ino_blks_per_grp = ext2fs_div_ceil(
1725                                         EXT2_INODES_PER_GROUP(fs->super)*
1726                                         new_size,
1727                                         fs->blocksize);
1728
1729         /* We may change the file system.
1730          * Mark the file system as invalid so that
1731          * the user is prompted to run fsck.
1732          */
1733         fs->super->s_state &= ~EXT2_VALID_FS;
1734
1735         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1736                                                 &bmap);
1737         if (retval) {
1738                 fputs(_("Failed to allocate block bitmap when "
1739                                 "increasing inode size\n"), stderr);
1740                 return retval;
1741         }
1742         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1743         if (retval) {
1744                 fputs(_("Not enough space to increase inode size \n"), stderr);
1745                 goto err_out;
1746         }
1747         retval = move_block(fs, bmap);
1748         if (retval) {
1749                 fputs(_("Failed to relocate blocks during inode resize \n"),
1750                       stderr);
1751                 goto err_out;
1752         }
1753         retval = inode_scan_and_fix(fs, bmap);
1754         if (retval)
1755                 goto err_out_undo;
1756
1757         retval = group_desc_scan_and_fix(fs, bmap);
1758         if (retval)
1759                 goto err_out_undo;
1760
1761         retval = expand_inode_table(fs, new_size);
1762         if (retval)
1763                 goto err_out_undo;
1764
1765         ext2fs_calculate_summary_stats(fs);
1766
1767         fs->super->s_state |= EXT2_VALID_FS;
1768         /* mark super block and block bitmap as dirty */
1769         ext2fs_mark_super_dirty(fs);
1770         ext2fs_mark_bb_dirty(fs);
1771
1772 err_out:
1773         free_blk_move_list();
1774         ext2fs_free_block_bitmap(bmap);
1775
1776         return retval;
1777
1778 err_out_undo:
1779         free_blk_move_list();
1780         ext2fs_free_block_bitmap(bmap);
1781         fputs(_("Error in resizing the inode size.\n"
1782                         "Run e2undo to undo the "
1783                         "file system changes. \n"), stderr);
1784
1785         return retval;
1786 }
1787
1788 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1789 {
1790         errcode_t retval = 0;
1791         const char *tdb_dir;
1792         char *tdb_file;
1793         char *dev_name, *tmp_name;
1794
1795 #if 0 /* FIXME!! */
1796         /*
1797          * Configuration via a conf file would be
1798          * nice
1799          */
1800         profile_get_string(profile, "scratch_files",
1801                                         "directory", 0, 0,
1802                                         &tdb_dir);
1803 #endif
1804         tmp_name = strdup(name);
1805         if (!tmp_name) {
1806         alloc_fn_fail:
1807                 com_err(program_name, ENOMEM,
1808                         _("Couldn't allocate memory for tdb filename\n"));
1809                 return ENOMEM;
1810         }
1811         dev_name = basename(tmp_name);
1812
1813         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1814         if (!tdb_dir)
1815                 tdb_dir = "/var/lib/e2fsprogs";
1816
1817         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1818             access(tdb_dir, W_OK))
1819                 return 0;
1820
1821         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1822         if (!tdb_file)
1823                 goto alloc_fn_fail;
1824         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1825
1826         if (!access(tdb_file, F_OK)) {
1827                 if (unlink(tdb_file) < 0) {
1828                         retval = errno;
1829                         com_err(program_name, retval,
1830                                 _("while trying to delete %s"),
1831                                 tdb_file);
1832                         free(tdb_file);
1833                         return retval;
1834                 }
1835         }
1836
1837         set_undo_io_backing_manager(*io_ptr);
1838         *io_ptr = undo_io_manager;
1839         set_undo_io_backup_file(tdb_file);
1840         printf(_("To undo the tune2fs operation please run "
1841                  "the command\n    e2undo %s %s\n\n"),
1842                  tdb_file, name);
1843         free(tdb_file);
1844         free(tmp_name);
1845         return retval;
1846 }
1847
1848 int main(int argc, char **argv)
1849 {
1850         errcode_t retval;
1851         ext2_filsys fs;
1852         struct ext2_super_block *sb;
1853         io_manager io_ptr, io_ptr_orig = NULL;
1854         int rc = 0;
1855
1856 #ifdef ENABLE_NLS
1857         setlocale(LC_MESSAGES, "");
1858         setlocale(LC_CTYPE, "");
1859         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1860         textdomain(NLS_CAT_NAME);
1861         set_com_err_gettext(gettext);
1862 #endif
1863         if (argc && *argv)
1864                 program_name = *argv;
1865         add_error_table(&et_ext2_error_table);
1866
1867 #ifdef CONFIG_BUILD_FINDFS
1868         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1869                 do_findfs(argc, argv);
1870 #endif
1871         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1872                 parse_e2label_options(argc, argv);
1873         else
1874                 parse_tune2fs_options(argc, argv);
1875
1876 #ifdef CONFIG_TESTIO_DEBUG
1877         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1878                 io_ptr = test_io_manager;
1879                 test_io_backing_manager = unix_io_manager;
1880         } else
1881 #endif
1882                 io_ptr = unix_io_manager;
1883
1884 retry_open:
1885         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1886                 open_flag |= EXT2_FLAG_SKIP_MMP;
1887
1888         open_flag |= EXT2_FLAG_64BITS;
1889
1890         /* keep the filesystem struct around to dump MMP data */
1891         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1892
1893         retval = ext2fs_open2(device_name, io_options, open_flag,
1894                               0, 0, io_ptr, &fs);
1895         if (retval) {
1896                 com_err(program_name, retval,
1897                         _("while trying to open %s"),
1898                         device_name);
1899                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1900                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1901                         dump_mmp_msg(fs->mmp_buf,
1902                                      _("If you are sure the filesystem "
1903                                        "is not in use on any node, run:\n"
1904                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1905                 else if (retval == EXT2_ET_MMP_FAILED)
1906                         dump_mmp_msg(fs->mmp_buf, NULL);
1907                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1908                         fprintf(stderr,
1909                                 _("MMP block magic is bad. Try to fix it by "
1910                                   "running:\n'e2fsck -f %s'\n"), device_name);
1911                 else if (retval != EXT2_ET_MMP_FAILED)
1912                         fprintf(stderr,
1913                              _("Couldn't find valid filesystem superblock.\n"));
1914
1915                 ext2fs_free(fs);
1916                 exit(1);
1917         }
1918         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
1919
1920         if (I_flag && !io_ptr_orig) {
1921                 /*
1922                  * Check the inode size is right so we can issue an
1923                  * error message and bail before setting up the tdb
1924                  * file.
1925                  */
1926                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1927                         fprintf(stderr, _("The inode size is already %lu\n"),
1928                                 new_inode_size);
1929                         rc = 1;
1930                         goto closefs;
1931                 }
1932                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1933                         fprintf(stderr, _("Shrinking the inode size is "
1934                                           "not supported\n"));
1935                         rc = 1;
1936                         goto closefs;
1937                 }
1938
1939                 /*
1940                  * If inode resize is requested use the
1941                  * Undo I/O manager
1942                  */
1943                 io_ptr_orig = io_ptr;
1944                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1945                 if (retval) {
1946                         rc = 1;
1947                         goto closefs;
1948                 }
1949                 if (io_ptr != io_ptr_orig) {
1950                         ext2fs_close(fs);
1951                         goto retry_open;
1952                 }
1953         }
1954
1955         sb = fs->super;
1956         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1957
1958         if (print_label) {
1959                 /* For e2label emulation */
1960                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1961                        sb->s_volume_name);
1962                 remove_error_table(&et_ext2_error_table);
1963                 goto closefs;
1964         }
1965
1966         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1967         if (retval) {
1968                 com_err("ext2fs_check_if_mount", retval,
1969                         _("while determining whether %s is mounted."),
1970                         device_name);
1971                 rc = 1;
1972                 goto closefs;
1973         }
1974         /* Normally we only need to write out the superblock */
1975         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1976
1977         if (c_flag) {
1978                 sb->s_max_mnt_count = max_mount_count;
1979                 ext2fs_mark_super_dirty(fs);
1980                 printf(_("Setting maximal mount count to %d\n"),
1981                        max_mount_count);
1982         }
1983         if (C_flag) {
1984                 sb->s_mnt_count = mount_count;
1985                 ext2fs_mark_super_dirty(fs);
1986                 printf(_("Setting current mount count to %d\n"), mount_count);
1987         }
1988         if (e_flag) {
1989                 sb->s_errors = errors;
1990                 ext2fs_mark_super_dirty(fs);
1991                 printf(_("Setting error behavior to %d\n"), errors);
1992         }
1993         if (g_flag) {
1994                 sb->s_def_resgid = resgid;
1995                 ext2fs_mark_super_dirty(fs);
1996                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1997         }
1998         if (i_flag) {
1999                 if (interval >= (1ULL << 32)) {
2000                         com_err(program_name, 0,
2001                                 _("interval between checks is too big (%lu)"),
2002                                 interval);
2003                         rc = 1;
2004                         goto closefs;
2005                 }
2006                 sb->s_checkinterval = interval;
2007                 ext2fs_mark_super_dirty(fs);
2008                 printf(_("Setting interval between checks to %lu seconds\n"),
2009                        interval);
2010         }
2011         if (m_flag) {
2012                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2013                                           ext2fs_blocks_count(sb) / 100.0);
2014                 ext2fs_mark_super_dirty(fs);
2015                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2016                         reserved_ratio, ext2fs_r_blocks_count(sb));
2017         }
2018         if (r_flag) {
2019                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2020                         com_err(program_name, 0,
2021                                 _("reserved blocks count is too big (%llu)"),
2022                                 reserved_blocks);
2023                         rc = 1;
2024                         goto closefs;
2025                 }
2026                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2027                 ext2fs_mark_super_dirty(fs);
2028                 printf(_("Setting reserved blocks count to %llu\n"),
2029                        reserved_blocks);
2030         }
2031         if (s_flag == 1) {
2032                 if (sb->s_feature_ro_compat &
2033                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
2034                         fputs(_("\nThe filesystem already has sparse "
2035                                 "superblocks.\n"), stderr);
2036                 else {
2037                         sb->s_feature_ro_compat |=
2038                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2039                         sb->s_state &= ~EXT2_VALID_FS;
2040                         ext2fs_mark_super_dirty(fs);
2041                         printf(_("\nSparse superblock flag set.  %s"),
2042                                _(please_fsck));
2043                 }
2044         }
2045         if (s_flag == 0) {
2046                 fputs(_("\nClearing the sparse superflag not supported.\n"),
2047                       stderr);
2048                 rc = 1;
2049                 goto closefs;
2050         }
2051         if (T_flag) {
2052                 sb->s_lastcheck = last_check_time;
2053                 ext2fs_mark_super_dirty(fs);
2054                 printf(_("Setting time filesystem last checked to %s\n"),
2055                        ctime(&last_check_time));
2056         }
2057         if (u_flag) {
2058                 sb->s_def_resuid = resuid;
2059                 ext2fs_mark_super_dirty(fs);
2060                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2061         }
2062         if (L_flag) {
2063                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2064                         fputs(_("Warning: label too long, truncating.\n"),
2065                               stderr);
2066                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2067                 strncpy(sb->s_volume_name, new_label,
2068                         sizeof(sb->s_volume_name));
2069                 ext2fs_mark_super_dirty(fs);
2070         }
2071         if (M_flag) {
2072                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2073                 strncpy(sb->s_last_mounted, new_last_mounted,
2074                         sizeof(sb->s_last_mounted));
2075                 ext2fs_mark_super_dirty(fs);
2076         }
2077         if (mntopts_cmd) {
2078                 rc = update_mntopts(fs, mntopts_cmd);
2079                 if (rc)
2080                         goto closefs;
2081         }
2082         if (features_cmd) {
2083                 rc = update_feature_set(fs, features_cmd);
2084                 if (rc)
2085                         goto closefs;
2086         }
2087         if (extended_cmd) {
2088                 rc = parse_extended_opts(fs, extended_cmd);
2089                 if (rc)
2090                         goto closefs;
2091                 if (clear_mmp && !f_flag) {
2092                         fputs(_("Error in using clear_mmp. "
2093                                 "It must be used with -f\n"),
2094                               stderr);
2095                         goto closefs;
2096                 }
2097         }
2098         if (clear_mmp) {
2099                 rc = ext2fs_mmp_clear(fs);
2100                 goto closefs;
2101         }
2102         if (journal_size || journal_device) {
2103                 rc = add_journal(fs);
2104                 if (rc)
2105                         goto closefs;
2106         }
2107
2108         if (Q_flag) {
2109                 if (mount_flags & EXT2_MF_MOUNTED) {
2110                         fputs(_("The quota feature may only be changed when "
2111                                 "the filesystem is unmounted.\n"), stderr);
2112                         rc = 1;
2113                         goto closefs;
2114                 }
2115                 handle_quota_options(fs);
2116         }
2117
2118         if (U_flag) {
2119                 int set_csum = 0;
2120                 dgrp_t i;
2121
2122                 if (sb->s_feature_ro_compat &
2123                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2124                         /*
2125                          * Determine if the block group checksums are
2126                          * correct so we know whether or not to set
2127                          * them later on.
2128                          */
2129                         for (i = 0; i < fs->group_desc_count; i++)
2130                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2131                                         break;
2132                         if (i >= fs->group_desc_count)
2133                                 set_csum = 1;
2134                 }
2135                 if ((strcasecmp(new_UUID, "null") == 0) ||
2136                     (strcasecmp(new_UUID, "clear") == 0)) {
2137                         uuid_clear(sb->s_uuid);
2138                 } else if (strcasecmp(new_UUID, "time") == 0) {
2139                         uuid_generate_time(sb->s_uuid);
2140                 } else if (strcasecmp(new_UUID, "random") == 0) {
2141                         uuid_generate(sb->s_uuid);
2142                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2143                         com_err(program_name, 0, _("Invalid UUID format\n"));
2144                         rc = 1;
2145                         goto closefs;
2146                 }
2147                 if (set_csum) {
2148                         for (i = 0; i < fs->group_desc_count; i++)
2149                                 ext2fs_group_desc_csum_set(fs, i);
2150                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2151                 }
2152                 ext2fs_mark_super_dirty(fs);
2153         }
2154         if (I_flag) {
2155                 if (mount_flags & EXT2_MF_MOUNTED) {
2156                         fputs(_("The inode size may only be "
2157                                 "changed when the filesystem is "
2158                                 "unmounted.\n"), stderr);
2159                         rc = 1;
2160                         goto closefs;
2161                 }
2162                 if (fs->super->s_feature_incompat &
2163                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2164                         fputs(_("Changing the inode size not supported for "
2165                                 "filesystems with the flex_bg\n"
2166                                 "feature enabled.\n"),
2167                               stderr);
2168                         rc = 1;
2169                         goto closefs;
2170                 }
2171                 /*
2172                  * We want to update group descriptor also
2173                  * with the new free inode count
2174                  */
2175                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2176                 if (resize_inode(fs, new_inode_size) == 0) {
2177                         printf(_("Setting inode size %lu\n"),
2178                                                         new_inode_size);
2179                 } else {
2180                         printf(_("Failed to change inode size\n"));
2181                         rc = 1;
2182                         goto closefs;
2183                 }
2184         }
2185
2186         if (l_flag)
2187                 list_super(sb);
2188         if (stride_set) {
2189                 sb->s_raid_stride = stride;
2190                 ext2fs_mark_super_dirty(fs);
2191                 printf(_("Setting stride size to %d\n"), stride);
2192         }
2193         if (stripe_width_set) {
2194                 sb->s_raid_stripe_width = stripe_width;
2195                 ext2fs_mark_super_dirty(fs);
2196                 printf(_("Setting stripe width to %d\n"), stripe_width);
2197         }
2198         if (ext_mount_opts) {
2199                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2200                         sizeof(fs->super->s_mount_opts));
2201                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2202                 ext2fs_mark_super_dirty(fs);
2203                 printf(_("Setting extended default mount options to '%s'\n"),
2204                        ext_mount_opts);
2205                 free(ext_mount_opts);
2206         }
2207         free(device_name);
2208         remove_error_table(&et_ext2_error_table);
2209
2210 closefs:
2211         if (rc) {
2212                 ext2fs_mmp_stop(fs);
2213                 exit(1);
2214         }
2215
2216         return (ext2fs_close(fs) ? 1 : 0);
2217 }