misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #include "config.h"
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #ifdef HAVE_STRINGS_H
  44 #include <strings.h>    /* for strcasecmp() */
  45 #else
  46 #define _BSD_SOURCE     /* for inclusion of strcasecmp() via <string.h> */
  47 #endif
  48 #include <string.h>
  49 #include <time.h>
  50 #include <unistd.h>
  51 #include <sys/types.h>
  52 #include <libgen.h>
  53 #include <limits.h>
  54
  55 #include "ext2fs/ext2_fs.h"
  56 #include "ext2fs/ext2fs.h"
  57 #include "et/com_err.h"
  58 #include "uuid/uuid.h"
  59 #include "e2p/e2p.h"
  60 #include "jfs_user.h"
  61 #include "util.h"
  62 #include "blkid/blkid.h"
  63 #include "quota/quotaio.h"
  64
  65 #include "../version.h"
  66 #include "nls-enable.h"
  67
  68 #define QOPT_ENABLE     (1)
  69 #define QOPT_DISABLE    (-1)
  70
  71 extern int ask_yn(const char *string, int def);
  72
  73 const char *program_name = "tune2fs";
  74 char *device_name;
  75 char *new_label, *new_last_mounted, *new_UUID;
  76 char *io_options;
  77 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  78 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  79 static int I_flag;
  80 static int clear_mmp;
  81 static time_t last_check_time;
  82 static int print_label;
  83 static int max_mount_count, mount_count, mount_flags;
  84 static unsigned long interval;
  85 static blk64_t reserved_blocks;
  86 static double reserved_ratio;
  87 static unsigned long resgid, resuid;
  88 static unsigned short errors;
  89 static int open_flag;
  90 static char *features_cmd;
  91 static char *mntopts_cmd;
  92 static int stride, stripe_width;
  93 static int stride_set, stripe_width_set;
  94 static char *extended_cmd;
  95 static unsigned long new_inode_size;
  96 static char *ext_mount_opts;
  97 static int usrquota, grpquota;
  98
  99 int journal_size, journal_flags;
 100 char *journal_device;
 101 static blk64_t journal_location = ~0LL;
 102
 103 static struct list_head blk_move_list;
 104
 105 struct blk_move {
 106         struct list_head list;
 107         blk64_t old_loc;
 108         blk64_t new_loc;
 109 };
 110
 111
 112 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 113
 114 #ifdef CONFIG_BUILD_FINDFS
 115 void do_findfs(int argc, char **argv);
 116 #endif
 117
 118 static void usage(void)
 119 {
 120         fprintf(stderr,
 121                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 122                   "[-g group]\n"
 123                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 124                   "\t[-m reserved_blocks_percent] "
 125                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 126                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 127                   "[-L volume_label]\n"
 128                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 129 #ifdef CONFIG_QUOTA
 130                   "\t[-Q quota_options]\n"
 131 #endif
 132                   "\t[-E extended-option[,...]] [-T last_check_time] "
 133                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 134         exit(1);
 135 }
 136
 137 static __u32 ok_features[3] = {
 138         /* Compat */
 139         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 140                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 141         /* Incompat */
 142         EXT2_FEATURE_INCOMPAT_FILETYPE |
 143                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 144                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 145                 EXT4_FEATURE_INCOMPAT_MMP,
 146         /* R/O compat */
 147         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 148                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 149                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 150                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 151                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 152 #ifdef CONFIG_QUOTA
 153                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 154 #endif
 155                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 156 };
 157
 158 static __u32 clear_ok_features[3] = {
 159         /* Compat */
 160         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 161                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 162                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 163         /* Incompat */
 164         EXT2_FEATURE_INCOMPAT_FILETYPE |
 165                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 166                 EXT4_FEATURE_INCOMPAT_MMP,
 167         /* R/O compat */
 168         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 169                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 170                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 171                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 172 #ifdef CONFIG_QUOTA
 173                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 174 #endif
 175                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 176 };
 177
 178 /*
 179  * Remove an external journal from the filesystem
 180  */
 181 static int remove_journal_device(ext2_filsys fs)
 182 {
 183         char            *journal_path;
 184         ext2_filsys     jfs;
 185         char            buf[1024];
 186         journal_superblock_t    *jsb;
 187         int             i, nr_users;
 188         errcode_t       retval;
 189         int             commit_remove_journal = 0;
 190         io_manager      io_ptr;
 191
 192         if (f_flag)
 193                 commit_remove_journal = 1; /* force removal even if error */
 194
 195         uuid_unparse(fs->super->s_journal_uuid, buf);
 196         journal_path = blkid_get_devname(NULL, "UUID", buf);
 197
 198         if (!journal_path) {
 199                 journal_path =
 200                         ext2fs_find_block_device(fs->super->s_journal_dev);
 201                 if (!journal_path)
 202                         goto no_valid_journal;
 203         }
 204
 205 #ifdef CONFIG_TESTIO_DEBUG
 206         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 207                 io_ptr = test_io_manager;
 208                 test_io_backing_manager = unix_io_manager;
 209         } else
 210 #endif
 211                 io_ptr = unix_io_manager;
 212         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 213                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 214                              fs->blocksize, io_ptr, &jfs);
 215         if (retval) {
 216                 com_err(program_name, retval, "%s",
 217                         _("while trying to open external journal"));
 218                 goto no_valid_journal;
 219         }
 220         if (!(jfs->super->s_feature_incompat &
 221               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 222                 fprintf(stderr, _("%s is not a journal device.\n"),
 223                         journal_path);
 224                 goto no_valid_journal;
 225         }
 226
 227         /* Get the journal superblock */
 228         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 229                 com_err(program_name, retval, "%s",
 230                         _("while reading journal superblock"));
 231                 goto no_valid_journal;
 232         }
 233
 234         jsb = (journal_superblock_t *) buf;
 235         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 236             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 237                 fputs(_("Journal superblock not found!\n"), stderr);
 238                 goto no_valid_journal;
 239         }
 240
 241         /* Find the filesystem UUID */
 242         nr_users = ntohl(jsb->s_nr_users);
 243         for (i = 0; i < nr_users; i++) {
 244                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 245                         break;
 246         }
 247         if (i >= nr_users) {
 248                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 249                       stderr);
 250                 commit_remove_journal = 1;
 251                 goto no_valid_journal;
 252         }
 253         nr_users--;
 254         for (i = 0; i < nr_users; i++)
 255                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 256         jsb->s_nr_users = htonl(nr_users);
 257
 258         /* Write back the journal superblock */
 259         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 260                 com_err(program_name, retval,
 261                         "while writing journal superblock.");
 262                 goto no_valid_journal;
 263         }
 264
 265         commit_remove_journal = 1;
 266
 267 no_valid_journal:
 268         if (commit_remove_journal == 0) {
 269                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 270                         "Use -f option to remove missing journal device.\n"),
 271                       stderr);
 272                 return 1;
 273         }
 274         fs->super->s_journal_dev = 0;
 275         uuid_clear(fs->super->s_journal_uuid);
 276         ext2fs_mark_super_dirty(fs);
 277         fputs(_("Journal removed\n"), stdout);
 278         free(journal_path);
 279
 280         return 0;
 281 }
 282
 283 /* Helper function for remove_journal_inode */
 284 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 285                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 286                                blk64_t ref_block EXT2FS_ATTR((unused)),
 287                                int ref_offset EXT2FS_ATTR((unused)),
 288                                void *private EXT2FS_ATTR((unused)))
 289 {
 290         blk64_t block;
 291         int     group;
 292
 293         block = *blocknr;
 294         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 295         group = ext2fs_group_of_blk2(fs, block);
 296         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 297         ext2fs_group_desc_csum_set(fs, group);
 298         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 299         return 0;
 300 }
 301
 302 /*
 303  * Remove the journal inode from the filesystem
 304  */
 305 static errcode_t remove_journal_inode(ext2_filsys fs)
 306 {
 307         struct ext2_inode       inode;
 308         errcode_t               retval;
 309         ino_t                   ino = fs->super->s_journal_inum;
 310
 311         retval = ext2fs_read_inode(fs, ino,  &inode);
 312         if (retval) {
 313                 com_err(program_name, retval, "%s",
 314                         _("while reading journal inode"));
 315                 return retval;
 316         }
 317         if (ino == EXT2_JOURNAL_INO) {
 318                 retval = ext2fs_read_bitmaps(fs);
 319                 if (retval) {
 320                         com_err(program_name, retval, "%s",
 321                                 _("while reading bitmaps"));
 322                         return retval;
 323                 }
 324                 retval = ext2fs_block_iterate3(fs, ino,
 325                                                BLOCK_FLAG_READ_ONLY, NULL,
 326                                                release_blocks_proc, NULL);
 327                 if (retval) {
 328                         com_err(program_name, retval, "%s",
 329                                 _("while clearing journal inode"));
 330                         return retval;
 331                 }
 332                 memset(&inode, 0, sizeof(inode));
 333                 ext2fs_mark_bb_dirty(fs);
 334                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 335         } else
 336                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 337         retval = ext2fs_write_inode(fs, ino, &inode);
 338         if (retval) {
 339                 com_err(program_name, retval, "%s",
 340                         _("while writing journal inode"));
 341                 return retval;
 342         }
 343         fs->super->s_journal_inum = 0;
 344         ext2fs_mark_super_dirty(fs);
 345
 346         return 0;
 347 }
 348
 349 /*
 350  * Update the default mount options
 351  */
 352 static int update_mntopts(ext2_filsys fs, char *mntopts)
 353 {
 354         struct ext2_super_block *sb = fs->super;
 355
 356         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 357                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 358                         mntopts);
 359                 return 1;
 360         }
 361         ext2fs_mark_super_dirty(fs);
 362
 363         return 0;
 364 }
 365
 366 static int check_fsck_needed(ext2_filsys fs)
 367 {
 368         if (fs->super->s_state & EXT2_VALID_FS)
 369                 return 0;
 370         printf("\n%s\n", _(please_fsck));
 371         if (mount_flags & EXT2_MF_READONLY)
 372                 printf("%s", _("(and reboot afterwards!)\n"));
 373         return 1;
 374 }
 375
 376 static void request_fsck_afterwards(ext2_filsys fs)
 377 {
 378         static int requested = 0;
 379
 380         if (requested++)
 381                 return;
 382         fs->super->s_state &= ~EXT2_VALID_FS;
 383         printf("\n%s\n", _(please_fsck));
 384         if (mount_flags & EXT2_MF_READONLY)
 385                 printf("%s", _("(and reboot afterwards!)\n"));
 386 }
 387
 388 /*
 389  * Update the feature set as provided by the user.
 390  */
 391 static int update_feature_set(ext2_filsys fs, char *features)
 392 {
 393         struct ext2_super_block *sb = fs->super;
 394         struct ext2_group_desc *gd;
 395         __u32           old_features[3];
 396         dgrp_t          i;
 397         int             type_err;
 398         unsigned int    mask_err;
 399
 400 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 401                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 402 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 403                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 404 #define FEATURE_CHANGED(type, mask) ((mask) & \
 405                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 406
 407         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 408         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 409         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 410
 411         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 412                               ok_features, clear_ok_features,
 413                               &type_err, &mask_err)) {
 414                 if (!mask_err)
 415                         fprintf(stderr,
 416                                 _("Invalid filesystem option set: %s\n"),
 417                                 features);
 418                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 419                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 420                                           "not supported.\n"),
 421                                 e2p_feature2string(type_err &
 422                                                    E2P_FEATURE_TYPE_MASK,
 423                                                    mask_err));
 424                 else
 425                         fprintf(stderr, _("Setting filesystem feature '%s' "
 426                                           "not supported.\n"),
 427                                 e2p_feature2string(type_err, mask_err));
 428                 return 1;
 429         }
 430
 431         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 432                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 433                     !(mount_flags & EXT2_MF_READONLY)) {
 434                         fputs(_("The has_journal feature may only be "
 435                                 "cleared when the filesystem is\n"
 436                                 "unmounted or mounted "
 437                                 "read-only.\n"), stderr);
 438                         return 1;
 439                 }
 440                 if ((sb->s_feature_incompat &
 441                     EXT3_FEATURE_INCOMPAT_RECOVER) &&
 442                     f_flag < 2) {
 443                         fputs(_("The needs_recovery flag is set.  "
 444                                 "Please run e2fsck before clearing\n"
 445                                 "the has_journal flag.\n"), stderr);
 446                         return 1;
 447                 }
 448                 if (sb->s_journal_inum) {
 449                         if (remove_journal_inode(fs))
 450                                 return 1;
 451                 }
 452                 if (sb->s_journal_dev) {
 453                         if (remove_journal_device(fs))
 454                                 return 1;
 455                 }
 456         }
 457
 458         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 459                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
 460                 if (sb->s_feature_incompat &
 461                         EXT2_FEATURE_INCOMPAT_META_BG) {
 462                         fputs(_("Setting filesystem feature 'sparse_super' "
 463                                 "not supported\nfor filesystems with "
 464                                 "the meta_bg feature enabled.\n"),
 465                                 stderr);
 466                         return 1;
 467                 }
 468         }
 469
 470         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 471                 int error;
 472
 473                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 474                     (mount_flags & EXT2_MF_READONLY)) {
 475                         fputs(_("The multiple mount protection feature can't\n"
 476                                 "be set if the filesystem is mounted or\n"
 477                                 "read-only.\n"), stderr);
 478                         return 1;
 479                 }
 480
 481                 error = ext2fs_mmp_init(fs);
 482                 if (error) {
 483                         fputs(_("\nError while enabling multiple mount "
 484                                 "protection feature."), stderr);
 485                         return 1;
 486                 }
 487
 488                 /*
 489                  * We want to update group desc with the new free blocks count
 490                  */
 491                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 492
 493                 printf(_("Multiple mount protection has been enabled "
 494                          "with update interval %ds.\n"),
 495                        sb->s_mmp_update_interval);
 496         }
 497
 498         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 499                 int error;
 500
 501                 if (mount_flags & EXT2_MF_READONLY) {
 502                         fputs(_("The multiple mount protection feature cannot\n"
 503                                 "be disabled if the filesystem is readonly.\n"),
 504                                 stderr);
 505                         return 1;
 506                 }
 507
 508                 error = ext2fs_read_bitmaps(fs);
 509                 if (error) {
 510                         fputs(_("Error while reading bitmaps\n"), stderr);
 511                         return 1;
 512                 }
 513
 514                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 515                 if (error) {
 516                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 517
 518                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 519                                 printf(_("Magic number in MMP block does not "
 520                                          "match. expected: %x, actual: %x\n"),
 521                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 522                         else
 523                                 com_err(program_name, error, "%s",
 524                                         _("while reading MMP block."));
 525                         goto mmp_error;
 526                 }
 527
 528                 /* We need to force out the group descriptors as well */
 529                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 530                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
 531 mmp_error:
 532                 sb->s_mmp_block = 0;
 533                 sb->s_mmp_update_interval = 0;
 534         }
 535
 536         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 537                 /*
 538                  * If adding a journal flag, let the create journal
 539                  * code below handle setting the flag and creating the
 540                  * journal.  We supply a default size if necessary.
 541                  */
 542                 if (!journal_size)
 543                         journal_size = -1;
 544                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 545         }
 546
 547         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 548                 if (!sb->s_def_hash_version)
 549                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 550                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 551                         uuid_generate((unsigned char *) sb->s_hash_seed);
 552         }
 553
 554         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 555                 if (ext2fs_check_desc(fs)) {
 556                         fputs(_("Clearing the flex_bg flag would "
 557                                 "cause the the filesystem to be\n"
 558                                 "inconsistent.\n"), stderr);
 559                         return 1;
 560                 }
 561         }
 562
 563         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 564                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 565                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 566                     !(mount_flags & EXT2_MF_READONLY)) {
 567                         fputs(_("The huge_file feature may only be "
 568                                 "cleared when the filesystem is\n"
 569                                 "unmounted or mounted "
 570                                 "read-only.\n"), stderr);
 571                         return 1;
 572                 }
 573         }
 574
 575         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 576                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 577                 for (i = 0; i < fs->group_desc_count; i++) {
 578                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 579                         gd->bg_itable_unused = 0;
 580                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 581                         ext2fs_group_desc_csum_set(fs, i);
 582                 }
 583                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 584         }
 585
 586         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 587                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 588                 for (i = 0; i < fs->group_desc_count; i++) {
 589                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 590                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 591                                 /*
 592                                  * XXX what we really should do is zap
 593                                  * uninitialized inode tables instead.
 594                                  */
 595                                 request_fsck_afterwards(fs);
 596                                 break;
 597                         }
 598                         gd->bg_itable_unused = 0;
 599                         gd->bg_flags = 0;
 600                         gd->bg_checksum = 0;
 601                 }
 602                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 603         }
 604
 605         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 606                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 607                 /*
 608                  * Set the Q_flag here and handle the quota options in the code
 609                  * below.
 610                  */
 611                 if (!Q_flag) {
 612                         Q_flag = 1;
 613                         /* Enable both user quota and group quota by default */
 614                         usrquota = QOPT_ENABLE;
 615                         grpquota = QOPT_ENABLE;
 616                 }
 617                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 618         }
 619
 620         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 621                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 622                 /*
 623                  * Set the Q_flag here and handle the quota options in the code
 624                  * below.
 625                  */
 626                 if (Q_flag)
 627                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 628                                 "arguments.\n"), stderr);
 629                 Q_flag = 1;
 630                 /* Disable both user quota and group quota by default */
 631                 usrquota = QOPT_DISABLE;
 632                 grpquota = QOPT_DISABLE;
 633         }
 634
 635         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 636             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 637              sb->s_feature_incompat))
 638                 ext2fs_update_dynamic_rev(fs);
 639
 640         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 641                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 642             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 643                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 644             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 645                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 646             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 647                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 648             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 649                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 650                 request_fsck_afterwards(fs);
 651
 652         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 653             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 654             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 655                 ext2fs_mark_super_dirty(fs);
 656
 657         return 0;
 658 }
 659
 660 /*
 661  * Add a journal to the filesystem.
 662  */
 663 static int add_journal(ext2_filsys fs)
 664 {
 665         unsigned long journal_blocks;
 666         errcode_t       retval;
 667         ext2_filsys     jfs;
 668         io_manager      io_ptr;
 669
 670         if (fs->super->s_feature_compat &
 671             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 672                 fputs(_("The filesystem already has a journal.\n"), stderr);
 673                 goto err;
 674         }
 675         if (journal_device) {
 676                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
 677                                         NULL))
 678                         proceed_question(-1);
 679                 check_mount(journal_device, 0, _("journal"));
 680 #ifdef CONFIG_TESTIO_DEBUG
 681                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 682                         io_ptr = test_io_manager;
 683                         test_io_backing_manager = unix_io_manager;
 684                 } else
 685 #endif
 686                         io_ptr = unix_io_manager;
 687                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 688                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 689                                      fs->blocksize, io_ptr, &jfs);
 690                 if (retval) {
 691                         com_err(program_name, retval,
 692                                 _("\n\twhile trying to open journal on %s\n"),
 693                                 journal_device);
 694                         goto err;
 695                 }
 696                 printf(_("Creating journal on device %s: "),
 697                        journal_device);
 698                 fflush(stdout);
 699
 700                 retval = ext2fs_add_journal_device(fs, jfs);
 701                 ext2fs_close_free(&jfs);
 702                 if (retval) {
 703                         com_err(program_name, retval,
 704                                 _("while adding filesystem to journal on %s"),
 705                                 journal_device);
 706                         goto err;
 707                 }
 708                 fputs(_("done\n"), stdout);
 709         } else if (journal_size) {
 710                 fputs(_("Creating journal inode: "), stdout);
 711                 fflush(stdout);
 712                 journal_blocks = figure_journal_size(journal_size, fs);
 713
 714                 if (journal_location_string)
 715                         journal_location =
 716                                 parse_num_blocks2(journal_location_string,
 717                                                   fs->super->s_log_block_size);
 718                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
 719                                                    journal_location,
 720                                                    journal_flags);
 721                 if (retval) {
 722                         fprintf(stderr, "\n");
 723                         com_err(program_name, retval, "%s",
 724                                 _("\n\twhile trying to create journal file"));
 725                         return retval;
 726                 } else
 727                         fputs(_("done\n"), stdout);
 728                 /*
 729                  * If the filesystem wasn't mounted, we need to force
 730                  * the block group descriptors out.
 731                  */
 732                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 733                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 734         }
 735         print_check_message(fs->super->s_max_mnt_count,
 736                             fs->super->s_checkinterval);
 737         return 0;
 738
 739 err:
 740         free(journal_device);
 741         return 1;
 742 }
 743
 744 static void handle_quota_options(ext2_filsys fs)
 745 {
 746         quota_ctx_t qctx;
 747         ext2_ino_t qf_ino;
 748
 749         if (!usrquota && !grpquota)
 750                 /* Nothing to do. */
 751                 return;
 752
 753         quota_init_context(&qctx, fs, -1);
 754
 755         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
 756                 quota_compute_usage(qctx);
 757
 758         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 759                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
 760                                                 QFMT_VFS_V1)) > 0)
 761                         quota_update_limits(qctx, qf_ino, USRQUOTA);
 762                 quota_write_inode(qctx, USRQUOTA);
 763         } else if (usrquota == QOPT_DISABLE) {
 764                 quota_remove_inode(fs, USRQUOTA);
 765         }
 766
 767         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 768                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
 769                                                 QFMT_VFS_V1)) > 0)
 770                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
 771                 quota_write_inode(qctx, GRPQUOTA);
 772         } else if (grpquota == QOPT_DISABLE) {
 773                 quota_remove_inode(fs, GRPQUOTA);
 774         }
 775
 776         quota_release_context(&qctx);
 777
 778         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 779                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 780                 ext2fs_mark_super_dirty(fs);
 781         } else if (!fs->super->s_usr_quota_inum &&
 782                    !fs->super->s_grp_quota_inum) {
 783                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 784                 ext2fs_mark_super_dirty(fs);
 785         }
 786
 787         return;
 788 }
 789
 790 #ifdef CONFIG_QUOTA
 791 static void parse_quota_opts(const char *opts)
 792 {
 793         char    *buf, *token, *next, *p;
 794         int     len;
 795
 796         len = strlen(opts);
 797         buf = malloc(len+1);
 798         if (!buf) {
 799                 fputs(_("Couldn't allocate memory to parse quota "
 800                         "options!\n"), stderr);
 801                 exit(1);
 802         }
 803         strcpy(buf, opts);
 804         for (token = buf; token && *token; token = next) {
 805                 p = strchr(token, ',');
 806                 next = 0;
 807                 if (p) {
 808                         *p = 0;
 809                         next = p+1;
 810                 }
 811
 812                 if (strcmp(token, "usrquota") == 0) {
 813                         usrquota = QOPT_ENABLE;
 814                 } else if (strcmp(token, "^usrquota") == 0) {
 815                         usrquota = QOPT_DISABLE;
 816                 } else if (strcmp(token, "grpquota") == 0) {
 817                         grpquota = QOPT_ENABLE;
 818                 } else if (strcmp(token, "^grpquota") == 0) {
 819                         grpquota = QOPT_DISABLE;
 820                 } else {
 821                         fputs(_("\nBad quota options specified.\n\n"
 822                                 "Following valid quota options are available "
 823                                 "(pass by separating with comma):\n"
 824                                 "\t[^]usrquota\n"
 825                                 "\t[^]grpquota\n"
 826                                 "\n\n"), stderr);
 827                         free(buf);
 828                         exit(1);
 829                 }
 830         }
 831         free(buf);
 832 }
 833 #endif
 834
 835 static void parse_e2label_options(int argc, char ** argv)
 836 {
 837         if ((argc < 2) || (argc > 3)) {
 838                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 839                 exit(1);
 840         }
 841         io_options = strchr(argv[1], '?');
 842         if (io_options)
 843                 *io_options++ = 0;
 844         device_name = blkid_get_devname(NULL, argv[1], NULL);
 845         if (!device_name) {
 846                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 847                         argv[1]);
 848                 exit(1);
 849         }
 850         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 851         if (argc == 3) {
 852                 open_flag |= EXT2_FLAG_RW;
 853                 L_flag = 1;
 854                 new_label = argv[2];
 855         } else
 856                 print_label++;
 857 }
 858
 859 static time_t parse_time(char *str)
 860 {
 861         struct  tm      ts;
 862
 863         if (strcmp(str, "now") == 0) {
 864                 return (time(0));
 865         }
 866         memset(&ts, 0, sizeof(ts));
 867 #ifdef HAVE_STRPTIME
 868         strptime(str, "%Y%m%d%H%M%S", &ts);
 869 #else
 870         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 871                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 872         ts.tm_year -= 1900;
 873         ts.tm_mon -= 1;
 874         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 875             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 876             ts.tm_min > 59 || ts.tm_sec > 61)
 877                 ts.tm_mday = 0;
 878 #endif
 879         if (ts.tm_mday == 0) {
 880                 com_err(program_name, 0,
 881                         _("Couldn't parse date/time specifier: %s"),
 882                         str);
 883                 usage();
 884         }
 885         ts.tm_isdst = -1;
 886         return (mktime(&ts));
 887 }
 888
 889 static void parse_tune2fs_options(int argc, char **argv)
 890 {
 891         int c;
 892         char *tmp;
 893         struct group *gr;
 894         struct passwd *pw;
 895         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:";
 896
 897 #ifdef CONFIG_QUOTA
 898         strcat(optstring, "Q:");
 899 #endif
 900         open_flag = 0;
 901
 902         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 903         while ((c = getopt(argc, argv, optstring)) != EOF)
 904                 switch (c) {
 905                 case 'c':
 906                         max_mount_count = strtol(optarg, &tmp, 0);
 907                         if (*tmp || max_mount_count > 16000) {
 908                                 com_err(program_name, 0,
 909                                         _("bad mounts count - %s"),
 910                                         optarg);
 911                                 usage();
 912                         }
 913                         if (max_mount_count == 0)
 914                                 max_mount_count = -1;
 915                         c_flag = 1;
 916                         open_flag = EXT2_FLAG_RW;
 917                         break;
 918                 case 'C':
 919                         mount_count = strtoul(optarg, &tmp, 0);
 920                         if (*tmp || mount_count > 16000) {
 921                                 com_err(program_name, 0,
 922                                         _("bad mounts count - %s"),
 923                                         optarg);
 924                                 usage();
 925                         }
 926                         C_flag = 1;
 927                         open_flag = EXT2_FLAG_RW;
 928                         break;
 929                 case 'e':
 930                         if (strcmp(optarg, "continue") == 0)
 931                                 errors = EXT2_ERRORS_CONTINUE;
 932                         else if (strcmp(optarg, "remount-ro") == 0)
 933                                 errors = EXT2_ERRORS_RO;
 934                         else if (strcmp(optarg, "panic") == 0)
 935                                 errors = EXT2_ERRORS_PANIC;
 936                         else {
 937                                 com_err(program_name, 0,
 938                                         _("bad error behavior - %s"),
 939                                         optarg);
 940                                 usage();
 941                         }
 942                         e_flag = 1;
 943                         open_flag = EXT2_FLAG_RW;
 944                         break;
 945                 case 'E':
 946                         extended_cmd = optarg;
 947                         open_flag |= EXT2_FLAG_RW;
 948                         break;
 949                 case 'f': /* Force */
 950                         f_flag++;
 951                         break;
 952                 case 'g':
 953                         resgid = strtoul(optarg, &tmp, 0);
 954                         if (*tmp) {
 955                                 gr = getgrnam(optarg);
 956                                 if (gr == NULL)
 957                                         tmp = optarg;
 958                                 else {
 959                                         resgid = gr->gr_gid;
 960                                         *tmp = 0;
 961                                 }
 962                         }
 963                         if (*tmp) {
 964                                 com_err(program_name, 0,
 965                                         _("bad gid/group name - %s"),
 966                                         optarg);
 967                                 usage();
 968                         }
 969                         g_flag = 1;
 970                         open_flag = EXT2_FLAG_RW;
 971                         break;
 972                 case 'i':
 973                         interval = strtoul(optarg, &tmp, 0);
 974                         switch (*tmp) {
 975                         case 's':
 976                                 tmp++;
 977                                 break;
 978                         case '\0':
 979                         case 'd':
 980                         case 'D': /* days */
 981                                 interval *= 86400;
 982                                 if (*tmp != '\0')
 983                                         tmp++;
 984                                 break;
 985                         case 'm':
 986                         case 'M': /* months! */
 987                                 interval *= 86400 * 30;
 988                                 tmp++;
 989                                 break;
 990                         case 'w':
 991                         case 'W': /* weeks */
 992                                 interval *= 86400 * 7;
 993                                 tmp++;
 994                                 break;
 995                         }
 996                         if (*tmp) {
 997                                 com_err(program_name, 0,
 998                                         _("bad interval - %s"), optarg);
 999                                 usage();
1000                         }
1001                         i_flag = 1;
1002                         open_flag = EXT2_FLAG_RW;
1003                         break;
1004                 case 'j':
1005                         if (!journal_size)
1006                                 journal_size = -1;
1007                         open_flag = EXT2_FLAG_RW;
1008                         break;
1009                 case 'J':
1010                         parse_journal_opts(optarg);
1011                         open_flag = EXT2_FLAG_RW;
1012                         break;
1013                 case 'l':
1014                         l_flag = 1;
1015                         break;
1016                 case 'L':
1017                         new_label = optarg;
1018                         L_flag = 1;
1019                         open_flag |= EXT2_FLAG_RW |
1020                                 EXT2_FLAG_JOURNAL_DEV_OK;
1021                         break;
1022                 case 'm':
1023                         reserved_ratio = strtod(optarg, &tmp);
1024                         if (*tmp || reserved_ratio > 50 ||
1025                             reserved_ratio < 0) {
1026                                 com_err(program_name, 0,
1027                                         _("bad reserved block ratio - %s"),
1028                                         optarg);
1029                                 usage();
1030                         }
1031                         m_flag = 1;
1032                         open_flag = EXT2_FLAG_RW;
1033                         break;
1034                 case 'M':
1035                         new_last_mounted = optarg;
1036                         M_flag = 1;
1037                         open_flag = EXT2_FLAG_RW;
1038                         break;
1039                 case 'o':
1040                         if (mntopts_cmd) {
1041                                 com_err(program_name, 0, "%s",
1042                                         _("-o may only be specified once"));
1043                                 usage();
1044                         }
1045                         mntopts_cmd = optarg;
1046                         open_flag = EXT2_FLAG_RW;
1047                         break;
1048                 case 'O':
1049                         if (features_cmd) {
1050                                 com_err(program_name, 0, "%s",
1051                                         _("-O may only be specified once"));
1052                                 usage();
1053                         }
1054                         features_cmd = optarg;
1055                         open_flag = EXT2_FLAG_RW;
1056                         break;
1057 #ifdef CONFIG_QUOTA
1058                 case 'Q':
1059                         Q_flag = 1;
1060                         parse_quota_opts(optarg);
1061                         open_flag = EXT2_FLAG_RW;
1062                         break;
1063 #endif
1064                 case 'r':
1065                         reserved_blocks = strtoul(optarg, &tmp, 0);
1066                         if (*tmp) {
1067                                 com_err(program_name, 0,
1068                                         _("bad reserved blocks count - %s"),
1069                                         optarg);
1070                                 usage();
1071                         }
1072                         r_flag = 1;
1073                         open_flag = EXT2_FLAG_RW;
1074                         break;
1075                 case 's': /* Deprecated */
1076                         s_flag = atoi(optarg);
1077                         open_flag = EXT2_FLAG_RW;
1078                         break;
1079                 case 'T':
1080                         T_flag = 1;
1081                         last_check_time = parse_time(optarg);
1082                         open_flag = EXT2_FLAG_RW;
1083                         break;
1084                 case 'u':
1085                                 resuid = strtoul(optarg, &tmp, 0);
1086                                 if (*tmp) {
1087                                         pw = getpwnam(optarg);
1088                                         if (pw == NULL)
1089                                                 tmp = optarg;
1090                                         else {
1091                                                 resuid = pw->pw_uid;
1092                                                 *tmp = 0;
1093                                         }
1094                                 }
1095                                 if (*tmp) {
1096                                         com_err(program_name, 0,
1097                                                 _("bad uid/user name - %s"),
1098                                                 optarg);
1099                                         usage();
1100                                 }
1101                                 u_flag = 1;
1102                                 open_flag = EXT2_FLAG_RW;
1103                                 break;
1104                 case 'U':
1105                         new_UUID = optarg;
1106                         U_flag = 1;
1107                         open_flag = EXT2_FLAG_RW |
1108                                 EXT2_FLAG_JOURNAL_DEV_OK;
1109                         break;
1110                 case 'I':
1111                         new_inode_size = strtoul(optarg, &tmp, 0);
1112                         if (*tmp) {
1113                                 com_err(program_name, 0,
1114                                         _("bad inode size - %s"),
1115                                         optarg);
1116                                 usage();
1117                         }
1118                         if (!((new_inode_size &
1119                                (new_inode_size - 1)) == 0)) {
1120                                 com_err(program_name, 0,
1121                                         _("Inode size must be a "
1122                                           "power of two- %s"),
1123                                         optarg);
1124                                 usage();
1125                         }
1126                         open_flag = EXT2_FLAG_RW;
1127                         I_flag = 1;
1128                         break;
1129                 default:
1130                         usage();
1131                 }
1132         if (optind < argc - 1 || optind == argc)
1133                 usage();
1134         if (!open_flag && !l_flag)
1135                 usage();
1136         io_options = strchr(argv[optind], '?');
1137         if (io_options)
1138                 *io_options++ = 0;
1139         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1140         if (!device_name) {
1141                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1142                         argv[optind]);
1143                 exit(1);
1144         }
1145 }
1146
1147 #ifdef CONFIG_BUILD_FINDFS
1148 void do_findfs(int argc, char **argv)
1149 {
1150         char    *dev;
1151
1152         if ((argc != 2) ||
1153             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1154                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1155                 exit(2);
1156         }
1157         dev = blkid_get_devname(NULL, argv[1], NULL);
1158         if (!dev) {
1159                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1160                         argv[1]);
1161                 exit(1);
1162         }
1163         puts(dev);
1164         exit(0);
1165 }
1166 #endif
1167
1168 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1169 {
1170         char    *buf, *token, *next, *p, *arg;
1171         int     len, hash_alg;
1172         int     r_usage = 0;
1173
1174         len = strlen(opts);
1175         buf = malloc(len+1);
1176         if (!buf) {
1177                 fprintf(stderr, "%s",
1178                         _("Couldn't allocate memory to parse options!\n"));
1179                 return 1;
1180         }
1181         strcpy(buf, opts);
1182         for (token = buf; token && *token; token = next) {
1183                 p = strchr(token, ',');
1184                 next = 0;
1185                 if (p) {
1186                         *p = 0;
1187                         next = p+1;
1188                 }
1189                 arg = strchr(token, '=');
1190                 if (arg) {
1191                         *arg = 0;
1192                         arg++;
1193                 }
1194                 if (strcmp(token, "clear-mmp") == 0 ||
1195                     strcmp(token, "clear_mmp") == 0) {
1196                         clear_mmp = 1;
1197                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1198                         unsigned long intv;
1199                         if (!arg) {
1200                                 r_usage++;
1201                                 continue;
1202                         }
1203                         intv = strtoul(arg, &p, 0);
1204                         if (*p) {
1205                                 fprintf(stderr,
1206                                         _("Invalid mmp_update_interval: %s\n"),
1207                                         arg);
1208                                 r_usage++;
1209                                 continue;
1210                         }
1211                         if (intv == 0) {
1212                                 intv = EXT4_MMP_UPDATE_INTERVAL;
1213                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1214                                 fprintf(stderr,
1215                                         _("mmp_update_interval too big: %lu\n"),
1216                                         intv);
1217                                 r_usage++;
1218                                 continue;
1219                         }
1220                         printf(P_("Setting multiple mount protection update "
1221                                   "interval to %lu second\n",
1222                                   "Setting multiple mount protection update "
1223                                   "interval to %lu seconds\n", intv),
1224                                intv);
1225                         fs->super->s_mmp_update_interval = intv;
1226                         ext2fs_mark_super_dirty(fs);
1227                 } else if (!strcmp(token, "test_fs")) {
1228                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1229                         printf("Setting test filesystem flag\n");
1230                         ext2fs_mark_super_dirty(fs);
1231                 } else if (!strcmp(token, "^test_fs")) {
1232                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1233                         printf("Clearing test filesystem flag\n");
1234                         ext2fs_mark_super_dirty(fs);
1235                 } else if (strcmp(token, "stride") == 0) {
1236                         if (!arg) {
1237                                 r_usage++;
1238                                 continue;
1239                         }
1240                         stride = strtoul(arg, &p, 0);
1241                         if (*p) {
1242                                 fprintf(stderr,
1243                                         _("Invalid RAID stride: %s\n"),
1244                                         arg);
1245                                 r_usage++;
1246                                 continue;
1247                         }
1248                         stride_set = 1;
1249                 } else if (strcmp(token, "stripe-width") == 0 ||
1250                            strcmp(token, "stripe_width") == 0) {
1251                         if (!arg) {
1252                                 r_usage++;
1253                                 continue;
1254                         }
1255                         stripe_width = strtoul(arg, &p, 0);
1256                         if (*p) {
1257                                 fprintf(stderr,
1258                                         _("Invalid RAID stripe-width: %s\n"),
1259                                         arg);
1260                                 r_usage++;
1261                                 continue;
1262                         }
1263                         stripe_width_set = 1;
1264                 } else if (strcmp(token, "hash_alg") == 0 ||
1265                            strcmp(token, "hash-alg") == 0) {
1266                         if (!arg) {
1267                                 r_usage++;
1268                                 continue;
1269                         }
1270                         hash_alg = e2p_string2hash(arg);
1271                         if (hash_alg < 0) {
1272                                 fprintf(stderr,
1273                                         _("Invalid hash algorithm: %s\n"),
1274                                         arg);
1275                                 r_usage++;
1276                                 continue;
1277                         }
1278                         fs->super->s_def_hash_version = hash_alg;
1279                         printf(_("Setting default hash algorithm "
1280                                  "to %s (%d)\n"),
1281                                arg, hash_alg);
1282                         ext2fs_mark_super_dirty(fs);
1283                 } else if (!strcmp(token, "mount_opts")) {
1284                         if (!arg) {
1285                                 r_usage++;
1286                                 continue;
1287                         }
1288                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1289                                 fprintf(stderr,
1290                                         "Extended mount options too long\n");
1291                                 continue;
1292                         }
1293                         ext_mount_opts = strdup(arg);
1294                 } else
1295                         r_usage++;
1296         }
1297         if (r_usage) {
1298                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1299                         "Extended options are separated by commas, "
1300                         "and may take an argument which\n"
1301                         "\tis set off by an equals ('=') sign.\n\n"
1302                         "Valid extended options are:\n"
1303                         "\tclear_mmp\n"
1304                         "\thash_alg=<hash algorithm>\n"
1305                         "\tmount_opts=<extended default mount options>\n"
1306                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1307                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1308                         "\ttest_fs\n"
1309                         "\t^test_fs\n"));
1310                 free(buf);
1311                 return 1;
1312         }
1313         free(buf);
1314
1315         return 0;
1316 }
1317
1318 /*
1319  * Fill in the block bitmap bmap with the information regarding the
1320  * blocks to be moved
1321  */
1322 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1323                             ext2fs_block_bitmap bmap)
1324 {
1325         dgrp_t i;
1326         int retval;
1327         ext2_badblocks_list bb_list = 0;
1328         blk64_t j, needed_blocks = 0;
1329         blk64_t start_blk, end_blk;
1330
1331         retval = ext2fs_read_bb_inode(fs, &bb_list);
1332         if (retval)
1333                 return retval;
1334
1335         for (i = 0; i < fs->group_desc_count; i++) {
1336                 start_blk = ext2fs_inode_table_loc(fs, i) +
1337                                         fs->inode_blocks_per_group;
1338
1339                 end_blk = ext2fs_inode_table_loc(fs, i) +
1340                                         new_ino_blks_per_grp;
1341
1342                 for (j = start_blk; j < end_blk; j++) {
1343                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1344                                 /*
1345                                  * IF the block is a bad block we fail
1346                                  */
1347                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1348                                         ext2fs_badblocks_list_free(bb_list);
1349                                         return ENOSPC;
1350                                 }
1351
1352                                 ext2fs_mark_block_bitmap2(bmap, j);
1353                         } else {
1354                                 /*
1355                                  * We are going to use this block for
1356                                  * inode table. So mark them used.
1357                                  */
1358                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1359                         }
1360                 }
1361                 needed_blocks += end_blk - start_blk;
1362         }
1363
1364         ext2fs_badblocks_list_free(bb_list);
1365         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1366                 return ENOSPC;
1367
1368         return 0;
1369 }
1370
1371 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
1372 {
1373         dgrp_t group;
1374         group = ext2fs_group_of_blk2(fs, blk);
1375         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1376                 return 1;
1377         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1378                 return 1;
1379         return 0;
1380 }
1381
1382 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
1383 {
1384         blk64_t start_blk, end_blk;
1385         start_blk = fs->super->s_first_data_block +
1386                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
1387         /*
1388          * We cannot get new block beyond end_blk for for the last block group
1389          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1390          */
1391         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1392         if (blk >= start_blk && blk <= end_blk)
1393                 return 1;
1394         return 0;
1395 }
1396
1397 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1398 {
1399
1400         char *buf;
1401         dgrp_t group = 0;
1402         errcode_t retval;
1403         int meta_data = 0;
1404         blk64_t blk, new_blk, goal;
1405         struct blk_move *bmv;
1406
1407         retval = ext2fs_get_mem(fs->blocksize, &buf);
1408         if (retval)
1409                 return retval;
1410
1411         for (new_blk = blk = fs->super->s_first_data_block;
1412              blk < ext2fs_blocks_count(fs->super); blk++) {
1413                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1414                         continue;
1415
1416                 if (ext2fs_is_meta_block(fs, blk)) {
1417                         /*
1418                          * If the block is mapping a fs meta data block
1419                          * like group desc/block bitmap/inode bitmap. We
1420                          * should find a block in the same group and fix
1421                          * the respective fs metadata pointers. Otherwise
1422                          * fail
1423                          */
1424                         group = ext2fs_group_of_blk2(fs, blk);
1425                         goal = ext2fs_group_first_block2(fs, group);
1426                         meta_data = 1;
1427
1428                 } else {
1429                         goal = new_blk;
1430                 }
1431                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1432                 if (retval)
1433                         goto err_out;
1434
1435                 /* new fs meta data block should be in the same group */
1436                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1437                         retval = ENOSPC;
1438                         goto err_out;
1439                 }
1440
1441                 /* Mark this block as allocated */
1442                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1443
1444                 /* Add it to block move list */
1445                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1446                 if (retval)
1447                         goto err_out;
1448
1449                 bmv->old_loc = blk;
1450                 bmv->new_loc = new_blk;
1451
1452                 list_add(&(bmv->list), &blk_move_list);
1453
1454                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1455                 if (retval)
1456                         goto err_out;
1457
1458                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1459                 if (retval)
1460                         goto err_out;
1461         }
1462
1463 err_out:
1464         ext2fs_free_mem(&buf);
1465         return retval;
1466 }
1467
1468 static blk64_t translate_block(blk64_t blk)
1469 {
1470         struct list_head *entry;
1471         struct blk_move *bmv;
1472
1473         list_for_each(entry, &blk_move_list) {
1474                 bmv = list_entry(entry, struct blk_move, list);
1475                 if (bmv->old_loc == blk)
1476                         return bmv->new_loc;
1477         }
1478
1479         return 0;
1480 }
1481
1482 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1483                          blk64_t *block_nr,
1484                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1485                          blk64_t ref_block EXT2FS_ATTR((unused)),
1486                          int ref_offset EXT2FS_ATTR((unused)),
1487                          void *priv_data)
1488 {
1489         int ret = 0;
1490         blk64_t new_blk;
1491         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1492
1493         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1494                 return 0;
1495         new_blk = translate_block(*block_nr);
1496         if (new_blk) {
1497                 *block_nr = new_blk;
1498                 /*
1499                  * This will force the ext2fs_write_inode in the iterator
1500                  */
1501                 ret |= BLOCK_CHANGED;
1502         }
1503
1504         return ret;
1505 }
1506
1507 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1508 {
1509         errcode_t retval = 0;
1510         ext2_ino_t ino;
1511         blk64_t blk;
1512         char *block_buf = 0;
1513         struct ext2_inode inode;
1514         ext2_inode_scan scan = NULL;
1515
1516         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1517         if (retval)
1518                 return retval;
1519
1520         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1521         if (retval)
1522                 goto err_out;
1523
1524         while (1) {
1525                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1526                 if (retval)
1527                         goto err_out;
1528
1529                 if (!ino)
1530                         break;
1531
1532                 if (inode.i_links_count == 0)
1533                         continue; /* inode not in use */
1534
1535                 /* FIXME!!
1536                  * If we end up modifying the journal inode
1537                  * the sb->s_jnl_blocks will differ. But a
1538                  * subsequent e2fsck fixes that.
1539                  * Do we need to fix this ??
1540                  */
1541
1542                 if (ext2fs_file_acl_block(fs, &inode) &&
1543                     ext2fs_test_block_bitmap2(bmap,
1544                                         ext2fs_file_acl_block(fs, &inode))) {
1545                         blk = translate_block(ext2fs_file_acl_block(fs,
1546                                                                     &inode));
1547                         if (!blk)
1548                                 continue;
1549
1550                         ext2fs_file_acl_block_set(fs, &inode, blk);
1551
1552                         /*
1553                          * Write the inode to disk so that inode table
1554                          * resizing can work
1555                          */
1556                         retval = ext2fs_write_inode(fs, ino, &inode);
1557                         if (retval)
1558                                 goto err_out;
1559                 }
1560
1561                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
1562                         continue;
1563
1564                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1565                                                process_block, bmap);
1566                 if (retval)
1567                         goto err_out;
1568
1569         }
1570
1571 err_out:
1572         ext2fs_free_mem(&block_buf);
1573
1574         return retval;
1575 }
1576
1577 /*
1578  * We need to scan for inode and block bitmaps that may need to be
1579  * moved.  This can take place if the filesystem was formatted for
1580  * RAID arrays using the mke2fs's extended option "stride".
1581  */
1582 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1583 {
1584         dgrp_t i;
1585         blk64_t blk, new_blk;
1586
1587         for (i = 0; i < fs->group_desc_count; i++) {
1588                 blk = ext2fs_block_bitmap_loc(fs, i);
1589                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1590                         new_blk = translate_block(blk);
1591                         if (!new_blk)
1592                                 continue;
1593                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1594                 }
1595
1596                 blk = ext2fs_inode_bitmap_loc(fs, i);
1597                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1598                         new_blk = translate_block(blk);
1599                         if (!new_blk)
1600                                 continue;
1601                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1602                 }
1603         }
1604         return 0;
1605 }
1606
1607 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1608 {
1609         dgrp_t i;
1610         blk64_t blk;
1611         errcode_t retval;
1612         int new_ino_blks_per_grp;
1613         unsigned int j;
1614         char *old_itable = NULL, *new_itable = NULL;
1615         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1616         unsigned long old_ino_size;
1617         int old_itable_size, new_itable_size;
1618
1619         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1620         old_ino_size = EXT2_INODE_SIZE(fs->super);
1621
1622         new_ino_blks_per_grp = ext2fs_div_ceil(
1623                                         EXT2_INODES_PER_GROUP(fs->super) *
1624                                         new_ino_size,
1625                                         fs->blocksize);
1626
1627         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1628
1629         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1630         if (retval)
1631                 return retval;
1632
1633         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1634         if (retval)
1635                 goto err_out;
1636
1637         tmp_old_itable = old_itable;
1638         tmp_new_itable = new_itable;
1639
1640         for (i = 0; i < fs->group_desc_count; i++) {
1641                 blk = ext2fs_inode_table_loc(fs, i);
1642                 retval = io_channel_read_blk64(fs->io, blk,
1643                                 fs->inode_blocks_per_group, old_itable);
1644                 if (retval)
1645                         goto err_out;
1646
1647                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1648                         memcpy(new_itable, old_itable, old_ino_size);
1649
1650                         memset(new_itable+old_ino_size, 0,
1651                                         new_ino_size - old_ino_size);
1652
1653                         new_itable += new_ino_size;
1654                         old_itable += old_ino_size;
1655                 }
1656
1657                 /* reset the pointer */
1658                 old_itable = tmp_old_itable;
1659                 new_itable = tmp_new_itable;
1660
1661                 retval = io_channel_write_blk64(fs->io, blk,
1662                                         new_ino_blks_per_grp, new_itable);
1663                 if (retval)
1664                         goto err_out;
1665         }
1666
1667         /* Update the meta data */
1668         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1669         fs->super->s_inode_size = new_ino_size;
1670
1671 err_out:
1672         if (old_itable)
1673                 ext2fs_free_mem(&old_itable);
1674
1675         if (new_itable)
1676                 ext2fs_free_mem(&new_itable);
1677
1678         return retval;
1679 }
1680
1681 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1682 {
1683         blk64_t         blk;
1684         ext2_ino_t      ino;
1685         unsigned int    group = 0;
1686         unsigned int    count = 0;
1687         int             total_free = 0;
1688         int             group_free = 0;
1689
1690         /*
1691          * First calculate the block statistics
1692          */
1693         for (blk = fs->super->s_first_data_block;
1694              blk < ext2fs_blocks_count(fs->super); blk++) {
1695                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1696                         group_free++;
1697                         total_free++;
1698                 }
1699                 count++;
1700                 if ((count == fs->super->s_blocks_per_group) ||
1701                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1702                         ext2fs_bg_free_blocks_count_set(fs, group++,
1703                                                         group_free);
1704                         count = 0;
1705                         group_free = 0;
1706                 }
1707         }
1708         total_free = EXT2FS_C2B(fs, total_free);
1709         ext2fs_free_blocks_count_set(fs->super, total_free);
1710
1711         /*
1712          * Next, calculate the inode statistics
1713          */
1714         group_free = 0;
1715         total_free = 0;
1716         count = 0;
1717         group = 0;
1718
1719         /* Protect loop from wrap-around if s_inodes_count maxed */
1720         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1721                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1722                         group_free++;
1723                         total_free++;
1724                 }
1725                 count++;
1726                 if ((count == fs->super->s_inodes_per_group) ||
1727                     (ino == fs->super->s_inodes_count)) {
1728                         ext2fs_bg_free_inodes_count_set(fs, group++,
1729                                                         group_free);
1730                         count = 0;
1731                         group_free = 0;
1732                 }
1733         }
1734         fs->super->s_free_inodes_count = total_free;
1735         ext2fs_mark_super_dirty(fs);
1736         return 0;
1737 }
1738
1739 #define list_for_each_safe(pos, pnext, head) \
1740         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1741              pos = pnext, pnext = pos->next)
1742
1743 static void free_blk_move_list(void)
1744 {
1745         struct list_head *entry, *tmp;
1746         struct blk_move *bmv;
1747
1748         list_for_each_safe(entry, tmp, &blk_move_list) {
1749                 bmv = list_entry(entry, struct blk_move, list);
1750                 list_del(entry);
1751                 ext2fs_free_mem(&bmv);
1752         }
1753         return;
1754 }
1755
1756 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1757 {
1758         errcode_t retval;
1759         int new_ino_blks_per_grp;
1760         ext2fs_block_bitmap bmap;
1761
1762         retval = ext2fs_read_inode_bitmap(fs);
1763         if (retval) {
1764                 fputs(_("Failed to read inode bitmap\n"), stderr);
1765                 return retval;
1766         }
1767         retval = ext2fs_read_block_bitmap(fs);
1768         if (retval) {
1769                 fputs(_("Failed to read block bitmap\n"), stderr);
1770                 return retval;
1771         }
1772         INIT_LIST_HEAD(&blk_move_list);
1773
1774
1775         new_ino_blks_per_grp = ext2fs_div_ceil(
1776                                         EXT2_INODES_PER_GROUP(fs->super)*
1777                                         new_size,
1778                                         fs->blocksize);
1779
1780         /* We may change the file system.
1781          * Mark the file system as invalid so that
1782          * the user is prompted to run fsck.
1783          */
1784         fs->super->s_state &= ~EXT2_VALID_FS;
1785
1786         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1787                                                 &bmap);
1788         if (retval) {
1789                 fputs(_("Failed to allocate block bitmap when "
1790                                 "increasing inode size\n"), stderr);
1791                 return retval;
1792         }
1793         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1794         if (retval) {
1795                 fputs(_("Not enough space to increase inode size \n"), stderr);
1796                 goto err_out;
1797         }
1798         retval = move_block(fs, bmap);
1799         if (retval) {
1800                 fputs(_("Failed to relocate blocks during inode resize \n"),
1801                       stderr);
1802                 goto err_out;
1803         }
1804         retval = inode_scan_and_fix(fs, bmap);
1805         if (retval)
1806                 goto err_out_undo;
1807
1808         retval = group_desc_scan_and_fix(fs, bmap);
1809         if (retval)
1810                 goto err_out_undo;
1811
1812         retval = expand_inode_table(fs, new_size);
1813         if (retval)
1814                 goto err_out_undo;
1815
1816         ext2fs_calculate_summary_stats(fs);
1817
1818         fs->super->s_state |= EXT2_VALID_FS;
1819         /* mark super block and block bitmap as dirty */
1820         ext2fs_mark_super_dirty(fs);
1821         ext2fs_mark_bb_dirty(fs);
1822
1823 err_out:
1824         free_blk_move_list();
1825         ext2fs_free_block_bitmap(bmap);
1826
1827         return retval;
1828
1829 err_out_undo:
1830         free_blk_move_list();
1831         ext2fs_free_block_bitmap(bmap);
1832         fputs(_("Error in resizing the inode size.\n"
1833                         "Run e2undo to undo the "
1834                         "file system changes. \n"), stderr);
1835
1836         return retval;
1837 }
1838
1839 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1840 {
1841         errcode_t retval = 0;
1842         const char *tdb_dir;
1843         char *tdb_file;
1844         char *dev_name, *tmp_name;
1845
1846 #if 0 /* FIXME!! */
1847         /*
1848          * Configuration via a conf file would be
1849          * nice
1850          */
1851         profile_get_string(profile, "scratch_files",
1852                                         "directory", 0, 0,
1853                                         &tdb_dir);
1854 #endif
1855         tmp_name = strdup(name);
1856         if (!tmp_name) {
1857         alloc_fn_fail:
1858                 com_err(program_name, ENOMEM, "%s",
1859                         _("Couldn't allocate memory for tdb filename\n"));
1860                 return ENOMEM;
1861         }
1862         dev_name = basename(tmp_name);
1863
1864         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1865         if (!tdb_dir)
1866                 tdb_dir = "/var/lib/e2fsprogs";
1867
1868         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1869             access(tdb_dir, W_OK))
1870                 return 0;
1871
1872         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1873         if (!tdb_file)
1874                 goto alloc_fn_fail;
1875         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1876
1877         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1878                 retval = errno;
1879                 com_err(program_name, retval,
1880                         _("while trying to delete %s"), tdb_file);
1881                 free(tdb_file);
1882                 return retval;
1883         }
1884
1885         set_undo_io_backing_manager(*io_ptr);
1886         *io_ptr = undo_io_manager;
1887         set_undo_io_backup_file(tdb_file);
1888         printf(_("To undo the tune2fs operation please run "
1889                  "the command\n    e2undo %s %s\n\n"),
1890                  tdb_file, name);
1891         free(tdb_file);
1892         free(tmp_name);
1893         return retval;
1894 }
1895
1896 int main(int argc, char **argv)
1897 {
1898         errcode_t retval;
1899         ext2_filsys fs;
1900         struct ext2_super_block *sb;
1901         io_manager io_ptr, io_ptr_orig = NULL;
1902         int rc = 0;
1903
1904 #ifdef ENABLE_NLS
1905         setlocale(LC_MESSAGES, "");
1906         setlocale(LC_CTYPE, "");
1907         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1908         textdomain(NLS_CAT_NAME);
1909         set_com_err_gettext(gettext);
1910 #endif
1911         if (argc && *argv)
1912                 program_name = *argv;
1913         add_error_table(&et_ext2_error_table);
1914
1915 #ifdef CONFIG_BUILD_FINDFS
1916         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1917                 do_findfs(argc, argv);
1918 #endif
1919         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1920                 parse_e2label_options(argc, argv);
1921         else
1922                 parse_tune2fs_options(argc, argv);
1923
1924 #ifdef CONFIG_TESTIO_DEBUG
1925         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1926                 io_ptr = test_io_manager;
1927                 test_io_backing_manager = unix_io_manager;
1928         } else
1929 #endif
1930                 io_ptr = unix_io_manager;
1931
1932 retry_open:
1933         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1934                 open_flag |= EXT2_FLAG_SKIP_MMP;
1935
1936         open_flag |= EXT2_FLAG_64BITS;
1937
1938         /* keep the filesystem struct around to dump MMP data */
1939         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1940
1941         retval = ext2fs_open2(device_name, io_options, open_flag,
1942                               0, 0, io_ptr, &fs);
1943         if (retval) {
1944                 com_err(program_name, retval,
1945                         _("while trying to open %s"),
1946                         device_name);
1947                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1948                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1949                         dump_mmp_msg(fs->mmp_buf,
1950                                      _("If you are sure the filesystem "
1951                                        "is not in use on any node, run:\n"
1952                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1953                 else if (retval == EXT2_ET_MMP_FAILED)
1954                         dump_mmp_msg(fs->mmp_buf, NULL);
1955                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1956                         fprintf(stderr,
1957                                 _("MMP block magic is bad. Try to fix it by "
1958                                   "running:\n'e2fsck -f %s'\n"), device_name);
1959                 else if (retval != EXT2_ET_MMP_FAILED)
1960                         fprintf(stderr, "%s",
1961                              _("Couldn't find valid filesystem superblock.\n"));
1962
1963                 ext2fs_free(fs);
1964                 exit(1);
1965         }
1966         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
1967
1968         if (I_flag && !io_ptr_orig) {
1969                 /*
1970                  * Check the inode size is right so we can issue an
1971                  * error message and bail before setting up the tdb
1972                  * file.
1973                  */
1974                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1975                         fprintf(stderr, _("The inode size is already %lu\n"),
1976                                 new_inode_size);
1977                         rc = 1;
1978                         goto closefs;
1979                 }
1980                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1981                         fprintf(stderr, "%s",
1982                                 _("Shrinking inode size is not supported\n"));
1983                         rc = 1;
1984                         goto closefs;
1985                 }
1986                 if (new_inode_size > fs->blocksize) {
1987                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
1988                                 new_inode_size, fs->blocksize);
1989                         rc = 1;
1990                         goto closefs;
1991                 }
1992
1993                 /*
1994                  * If inode resize is requested use the
1995                  * Undo I/O manager
1996                  */
1997                 io_ptr_orig = io_ptr;
1998                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1999                 if (retval) {
2000                         rc = 1;
2001                         goto closefs;
2002                 }
2003                 if (io_ptr != io_ptr_orig) {
2004                         ext2fs_close_free(&fs);
2005                         goto retry_open;
2006                 }
2007         }
2008
2009         sb = fs->super;
2010         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2011
2012         if (print_label) {
2013                 /* For e2label emulation */
2014                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2015                        sb->s_volume_name);
2016                 remove_error_table(&et_ext2_error_table);
2017                 goto closefs;
2018         }
2019
2020         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2021         if (retval) {
2022                 com_err("ext2fs_check_if_mount", retval,
2023                         _("while determining whether %s is mounted."),
2024                         device_name);
2025                 rc = 1;
2026                 goto closefs;
2027         }
2028         /* Normally we only need to write out the superblock */
2029         fs->flags |= EXT2_FLAG_SUPER_ONLY;
2030
2031         if (c_flag) {
2032                 sb->s_max_mnt_count = max_mount_count;
2033                 ext2fs_mark_super_dirty(fs);
2034                 printf(_("Setting maximal mount count to %d\n"),
2035                        max_mount_count);
2036         }
2037         if (C_flag) {
2038                 sb->s_mnt_count = mount_count;
2039                 ext2fs_mark_super_dirty(fs);
2040                 printf(_("Setting current mount count to %d\n"), mount_count);
2041         }
2042         if (e_flag) {
2043                 sb->s_errors = errors;
2044                 ext2fs_mark_super_dirty(fs);
2045                 printf(_("Setting error behavior to %d\n"), errors);
2046         }
2047         if (g_flag) {
2048                 sb->s_def_resgid = resgid;
2049                 ext2fs_mark_super_dirty(fs);
2050                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2051         }
2052         if (i_flag) {
2053                 if ((unsigned long long)interval >= (1ULL << 32)) {
2054                         com_err(program_name, 0,
2055                                 _("interval between checks is too big (%lu)"),
2056                                 interval);
2057                         rc = 1;
2058                         goto closefs;
2059                 }
2060                 sb->s_checkinterval = interval;
2061                 ext2fs_mark_super_dirty(fs);
2062                 printf(_("Setting interval between checks to %lu seconds\n"),
2063                        interval);
2064         }
2065         if (m_flag) {
2066                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2067                                           ext2fs_blocks_count(sb) / 100.0);
2068                 ext2fs_mark_super_dirty(fs);
2069                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2070                         reserved_ratio, ext2fs_r_blocks_count(sb));
2071         }
2072         if (r_flag) {
2073                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2074                         com_err(program_name, 0,
2075                                 _("reserved blocks count is too big (%llu)"),
2076                                 reserved_blocks);
2077                         rc = 1;
2078                         goto closefs;
2079                 }
2080                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2081                 ext2fs_mark_super_dirty(fs);
2082                 printf(_("Setting reserved blocks count to %llu\n"),
2083                        reserved_blocks);
2084         }
2085         if (s_flag == 1) {
2086                 if (sb->s_feature_ro_compat &
2087                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
2088                         fputs(_("\nThe filesystem already has sparse "
2089                                 "superblocks.\n"), stderr);
2090                 } else if (sb->s_feature_incompat &
2091                         EXT2_FEATURE_INCOMPAT_META_BG) {
2092                         fputs(_("\nSetting the sparse superblock flag not "
2093                                 "supported\nfor filesystems with "
2094                                 "the meta_bg feature enabled.\n"),
2095                                 stderr);
2096                         rc = 1;
2097                         goto closefs;
2098                 } else {
2099                         sb->s_feature_ro_compat |=
2100                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2101                         sb->s_state &= ~EXT2_VALID_FS;
2102                         ext2fs_mark_super_dirty(fs);
2103                         printf(_("\nSparse superblock flag set.  %s"),
2104                                _(please_fsck));
2105                 }
2106         }
2107         if (s_flag == 0) {
2108                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2109                       stderr);
2110                 rc = 1;
2111                 goto closefs;
2112         }
2113         if (T_flag) {
2114                 sb->s_lastcheck = last_check_time;
2115                 ext2fs_mark_super_dirty(fs);
2116                 printf(_("Setting time filesystem last checked to %s\n"),
2117                        ctime(&last_check_time));
2118         }
2119         if (u_flag) {
2120                 sb->s_def_resuid = resuid;
2121                 ext2fs_mark_super_dirty(fs);
2122                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2123         }
2124         if (L_flag) {
2125                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2126                         fputs(_("Warning: label too long, truncating.\n"),
2127                               stderr);
2128                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2129                 strncpy(sb->s_volume_name, new_label,
2130                         sizeof(sb->s_volume_name));
2131                 ext2fs_mark_super_dirty(fs);
2132         }
2133         if (M_flag) {
2134                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2135                 strncpy(sb->s_last_mounted, new_last_mounted,
2136                         sizeof(sb->s_last_mounted));
2137                 ext2fs_mark_super_dirty(fs);
2138         }
2139         if (mntopts_cmd) {
2140                 rc = update_mntopts(fs, mntopts_cmd);
2141                 if (rc)
2142                         goto closefs;
2143         }
2144         if (features_cmd) {
2145                 rc = update_feature_set(fs, features_cmd);
2146                 if (rc)
2147                         goto closefs;
2148         }
2149         if (extended_cmd) {
2150                 rc = parse_extended_opts(fs, extended_cmd);
2151                 if (rc)
2152                         goto closefs;
2153                 if (clear_mmp && !f_flag) {
2154                         fputs(_("Error in using clear_mmp. "
2155                                 "It must be used with -f\n"),
2156                               stderr);
2157                         goto closefs;
2158                 }
2159         }
2160         if (clear_mmp) {
2161                 rc = ext2fs_mmp_clear(fs);
2162                 goto closefs;
2163         }
2164         if (journal_size || journal_device) {
2165                 rc = add_journal(fs);
2166                 if (rc)
2167                         goto closefs;
2168         }
2169
2170         if (Q_flag) {
2171                 if (mount_flags & EXT2_MF_MOUNTED) {
2172                         fputs(_("The quota feature may only be changed when "
2173                                 "the filesystem is unmounted.\n"), stderr);
2174                         rc = 1;
2175                         goto closefs;
2176                 }
2177                 handle_quota_options(fs);
2178         }
2179
2180         if (U_flag) {
2181                 int set_csum = 0;
2182                 dgrp_t i;
2183
2184                 if (sb->s_feature_ro_compat &
2185                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2186                         /*
2187                          * Changing the UUID requires rewriting all metadata,
2188                          * which can race with a mounted fs.  Don't allow that.
2189                          */
2190                         if (mount_flags & EXT2_MF_MOUNTED) {
2191                                 fputs(_("The UUID may only be "
2192                                         "changed when the filesystem is "
2193                                         "unmounted.\n"), stderr);
2194                                 exit(1);
2195                         }
2196                         if (check_fsck_needed(fs))
2197                                 exit(1);
2198
2199                         /*
2200                          * Determine if the block group checksums are
2201                          * correct so we know whether or not to set
2202                          * them later on.
2203                          */
2204                         for (i = 0; i < fs->group_desc_count; i++)
2205                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2206                                         break;
2207                         if (i >= fs->group_desc_count)
2208                                 set_csum = 1;
2209                 }
2210                 if ((strcasecmp(new_UUID, "null") == 0) ||
2211                     (strcasecmp(new_UUID, "clear") == 0)) {
2212                         uuid_clear(sb->s_uuid);
2213                 } else if (strcasecmp(new_UUID, "time") == 0) {
2214                         uuid_generate_time(sb->s_uuid);
2215                 } else if (strcasecmp(new_UUID, "random") == 0) {
2216                         uuid_generate(sb->s_uuid);
2217                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2218                         com_err(program_name, 0, "%s",
2219                                 _("Invalid UUID format\n"));
2220                         rc = 1;
2221                         goto closefs;
2222                 }
2223                 if (set_csum) {
2224                         for (i = 0; i < fs->group_desc_count; i++)
2225                                 ext2fs_group_desc_csum_set(fs, i);
2226                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2227                 }
2228                 ext2fs_mark_super_dirty(fs);
2229         }
2230         if (I_flag) {
2231                 if (mount_flags & EXT2_MF_MOUNTED) {
2232                         fputs(_("The inode size may only be "
2233                                 "changed when the filesystem is "
2234                                 "unmounted.\n"), stderr);
2235                         rc = 1;
2236                         goto closefs;
2237                 }
2238                 if (fs->super->s_feature_incompat &
2239                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2240                         fputs(_("Changing the inode size not supported for "
2241                                 "filesystems with the flex_bg\n"
2242                                 "feature enabled.\n"),
2243                               stderr);
2244                         rc = 1;
2245                         goto closefs;
2246                 }
2247                 /*
2248                  * We want to update group descriptor also
2249                  * with the new free inode count
2250                  */
2251                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2252                 if (resize_inode(fs, new_inode_size) == 0) {
2253                         printf(_("Setting inode size %lu\n"),
2254                                                         new_inode_size);
2255                 } else {
2256                         printf("%s", _("Failed to change inode size\n"));
2257                         rc = 1;
2258                         goto closefs;
2259                 }
2260         }
2261
2262         if (l_flag)
2263                 list_super(sb);
2264         if (stride_set) {
2265                 sb->s_raid_stride = stride;
2266                 ext2fs_mark_super_dirty(fs);
2267                 printf(_("Setting stride size to %d\n"), stride);
2268         }
2269         if (stripe_width_set) {
2270                 sb->s_raid_stripe_width = stripe_width;
2271                 ext2fs_mark_super_dirty(fs);
2272                 printf(_("Setting stripe width to %d\n"), stripe_width);
2273         }
2274         if (ext_mount_opts) {
2275                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2276                         sizeof(fs->super->s_mount_opts));
2277                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2278                 ext2fs_mark_super_dirty(fs);
2279                 printf(_("Setting extended default mount options to '%s'\n"),
2280                        ext_mount_opts);
2281                 free(ext_mount_opts);
2282         }
2283         free(device_name);
2284         remove_error_table(&et_ext2_error_table);
2285
2286 closefs:
2287         if (rc) {
2288                 ext2fs_mmp_stop(fs);
2289                 exit(1);
2290         }
2291
2292         return (ext2fs_close_free(&fs) ? 1 : 0);
2293 }