misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include "config.h"
  31 #include <fcntl.h>
  32 #include <grp.h>
  33 #ifdef HAVE_GETOPT_H
  34 #include <getopt.h>
  35 #else
  36 extern char *optarg;
  37 extern int optind;
  38 #endif
  39 #include <pwd.h>
  40 #include <stdio.h>
  41 #ifdef HAVE_STDLIB_H
  42 #include <stdlib.h>
  43 #endif
  44 #include <string.h>
  45 #include <time.h>
  46 #include <unistd.h>
  47 #include <sys/types.h>
  48 #include <libgen.h>
  49 #include <limits.h>
  50
  51 #include "ext2fs/ext2_fs.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "et/com_err.h"
  54 #include "uuid/uuid.h"
  55 #include "e2p/e2p.h"
  56 #include "jfs_user.h"
  57 #include "util.h"
  58 #include "blkid/blkid.h"
  59 #include "quota/mkquota.h"
  60
  61 #include "../version.h"
  62 #include "nls-enable.h"
  63
  64 #define QOPT_ENABLE     (1)
  65 #define QOPT_DISABLE    (-1)
  66
  67 extern int ask_yn(const char *string, int def);
  68
  69 const char *program_name = "tune2fs";
  70 char *device_name;
  71 char *new_label, *new_last_mounted, *new_UUID;
  72 char *io_options;
  73 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  74 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  75 static int I_flag;
  76 static int clear_mmp;
  77 static time_t last_check_time;
  78 static int print_label;
  79 static int max_mount_count, mount_count, mount_flags;
  80 static unsigned long interval;
  81 static blk64_t reserved_blocks;
  82 static double reserved_ratio;
  83 static unsigned long resgid, resuid;
  84 static unsigned short errors;
  85 static int open_flag;
  86 static char *features_cmd;
  87 static char *mntopts_cmd;
  88 static int stride, stripe_width;
  89 static int stride_set, stripe_width_set;
  90 static char *extended_cmd;
  91 static unsigned long new_inode_size;
  92 static char *ext_mount_opts;
  93 static int usrquota, grpquota;
  94
  95 int journal_size, journal_flags;
  96 char *journal_device;
  97
  98 static struct list_head blk_move_list;
  99
 100 struct blk_move {
 101         struct list_head list;
 102         blk64_t old_loc;
 103         blk64_t new_loc;
 104 };
 105
 106
 107 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 108
 109 #ifdef CONFIG_BUILD_FINDFS
 110 void do_findfs(int argc, char **argv);
 111 #endif
 112
 113 static void usage(void)
 114 {
 115         fprintf(stderr,
 116                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 117                   "[-g group]\n"
 118                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 119                   "\t[-m reserved_blocks_percent] "
 120                   "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
 121                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 122                   "[-L volume_label]\n"
 123                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 124                   "\t[-E extended-option[,...]] [-T last_check_time] "
 125                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 126         exit(1);
 127 }
 128
 129 static __u32 ok_features[3] = {
 130         /* Compat */
 131         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 132                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 133         /* Incompat */
 134         EXT2_FEATURE_INCOMPAT_FILETYPE |
 135                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 136                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 137                 EXT4_FEATURE_INCOMPAT_MMP,
 138         /* R/O compat */
 139         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 140                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 141                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 142                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 143                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 144 #ifdef CONFIG_QUOTA
 145                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 146 #endif
 147                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 148 };
 149
 150 static __u32 clear_ok_features[3] = {
 151         /* Compat */
 152         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 153                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 154                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 155         /* Incompat */
 156         EXT2_FEATURE_INCOMPAT_FILETYPE |
 157                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 158                 EXT4_FEATURE_INCOMPAT_MMP,
 159         /* R/O compat */
 160         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 161                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 162                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 163                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 164 #ifdef CONFIG_QUOTA
 165                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 166 #endif
 167                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 168 };
 169
 170 /*
 171  * Remove an external journal from the filesystem
 172  */
 173 static int remove_journal_device(ext2_filsys fs)
 174 {
 175         char            *journal_path;
 176         ext2_filsys     jfs;
 177         char            buf[1024];
 178         journal_superblock_t    *jsb;
 179         int             i, nr_users;
 180         errcode_t       retval;
 181         int             commit_remove_journal = 0;
 182         io_manager      io_ptr;
 183
 184         if (f_flag)
 185                 commit_remove_journal = 1; /* force removal even if error */
 186
 187         uuid_unparse(fs->super->s_journal_uuid, buf);
 188         journal_path = blkid_get_devname(NULL, "UUID", buf);
 189
 190         if (!journal_path) {
 191                 journal_path =
 192                         ext2fs_find_block_device(fs->super->s_journal_dev);
 193                 if (!journal_path)
 194                         goto no_valid_journal;
 195         }
 196
 197 #ifdef CONFIG_TESTIO_DEBUG
 198         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 199                 io_ptr = test_io_manager;
 200                 test_io_backing_manager = unix_io_manager;
 201         } else
 202 #endif
 203                 io_ptr = unix_io_manager;
 204         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 205                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 206                              fs->blocksize, io_ptr, &jfs);
 207         if (retval) {
 208                 com_err(program_name, retval,
 209                         _("while trying to open external journal"));
 210                 goto no_valid_journal;
 211         }
 212         if (!(jfs->super->s_feature_incompat &
 213               EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 214                 fprintf(stderr, _("%s is not a journal device.\n"),
 215                         journal_path);
 216                 goto no_valid_journal;
 217         }
 218
 219         /* Get the journal superblock */
 220         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 221                 com_err(program_name, retval,
 222                         _("while reading journal superblock"));
 223                 goto no_valid_journal;
 224         }
 225
 226         jsb = (journal_superblock_t *) buf;
 227         if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
 228             (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
 229                 fputs(_("Journal superblock not found!\n"), stderr);
 230                 goto no_valid_journal;
 231         }
 232
 233         /* Find the filesystem UUID */
 234         nr_users = ntohl(jsb->s_nr_users);
 235         for (i = 0; i < nr_users; i++) {
 236                 if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
 237                         break;
 238         }
 239         if (i >= nr_users) {
 240                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 241                       stderr);
 242                 commit_remove_journal = 1;
 243                 goto no_valid_journal;
 244         }
 245         nr_users--;
 246         for (i = 0; i < nr_users; i++)
 247                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 248         jsb->s_nr_users = htonl(nr_users);
 249
 250         /* Write back the journal superblock */
 251         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 252                 com_err(program_name, retval,
 253                         "while writing journal superblock.");
 254                 goto no_valid_journal;
 255         }
 256
 257         commit_remove_journal = 1;
 258
 259 no_valid_journal:
 260         if (commit_remove_journal == 0) {
 261                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 262                         "Use -f option to remove missing journal device.\n"),
 263                       stderr);
 264                 return 1;
 265         }
 266         fs->super->s_journal_dev = 0;
 267         uuid_clear(fs->super->s_journal_uuid);
 268         ext2fs_mark_super_dirty(fs);
 269         fputs(_("Journal removed\n"), stdout);
 270         free(journal_path);
 271
 272         return 0;
 273 }
 274
 275 /* Helper function for remove_journal_inode */
 276 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 277                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 278                                blk64_t ref_block EXT2FS_ATTR((unused)),
 279                                int ref_offset EXT2FS_ATTR((unused)),
 280                                void *private EXT2FS_ATTR((unused)))
 281 {
 282         blk64_t block;
 283         int     group;
 284
 285         block = *blocknr;
 286         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 287         group = ext2fs_group_of_blk2(fs, block);
 288         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 289         ext2fs_group_desc_csum_set(fs, group);
 290         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 291         return 0;
 292 }
 293
 294 /*
 295  * Remove the journal inode from the filesystem
 296  */
 297 static errcode_t remove_journal_inode(ext2_filsys fs)
 298 {
 299         struct ext2_inode       inode;
 300         errcode_t               retval;
 301         ino_t                   ino = fs->super->s_journal_inum;
 302
 303         retval = ext2fs_read_inode(fs, ino,  &inode);
 304         if (retval) {
 305                 com_err(program_name, retval,
 306                         _("while reading journal inode"));
 307                 return retval;
 308         }
 309         if (ino == EXT2_JOURNAL_INO) {
 310                 retval = ext2fs_read_bitmaps(fs);
 311                 if (retval) {
 312                         com_err(program_name, retval,
 313                                 _("while reading bitmaps"));
 314                         return retval;
 315                 }
 316                 retval = ext2fs_block_iterate3(fs, ino,
 317                                                BLOCK_FLAG_READ_ONLY, NULL,
 318                                                release_blocks_proc, NULL);
 319                 if (retval) {
 320                         com_err(program_name, retval,
 321                                 _("while clearing journal inode"));
 322                         return retval;
 323                 }
 324                 memset(&inode, 0, sizeof(inode));
 325                 ext2fs_mark_bb_dirty(fs);
 326                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 327         } else
 328                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 329         retval = ext2fs_write_inode(fs, ino, &inode);
 330         if (retval) {
 331                 com_err(program_name, retval,
 332                         _("while writing journal inode"));
 333                 return retval;
 334         }
 335         fs->super->s_journal_inum = 0;
 336         ext2fs_mark_super_dirty(fs);
 337
 338         return 0;
 339 }
 340
 341 /*
 342  * Update the default mount options
 343  */
 344 static int update_mntopts(ext2_filsys fs, char *mntopts)
 345 {
 346         struct ext2_super_block *sb = fs->super;
 347
 348         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 349                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 350                         mntopts);
 351                 return 1;
 352         }
 353         ext2fs_mark_super_dirty(fs);
 354
 355         return 0;
 356 }
 357
 358 static void request_fsck_afterwards(ext2_filsys fs)
 359 {
 360         static int requested = 0;
 361
 362         if (requested++)
 363                 return;
 364         fs->super->s_state &= ~EXT2_VALID_FS;
 365         printf("\n%s\n", _(please_fsck));
 366         if (mount_flags & EXT2_MF_READONLY)
 367                 printf(_("(and reboot afterwards!)\n"));
 368 }
 369
 370 /*
 371  * Update the feature set as provided by the user.
 372  */
 373 static int update_feature_set(ext2_filsys fs, char *features)
 374 {
 375         struct ext2_super_block *sb = fs->super;
 376         struct ext2_group_desc *gd;
 377         __u32           old_features[3];
 378         int             i, type_err;
 379         unsigned int    mask_err;
 380
 381 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 382                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 383 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 384                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 385 #define FEATURE_CHANGED(type, mask) ((mask) & \
 386                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 387
 388         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 389         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 390         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 391
 392         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 393                               ok_features, clear_ok_features,
 394                               &type_err, &mask_err)) {
 395                 if (!mask_err)
 396                         fprintf(stderr,
 397                                 _("Invalid filesystem option set: %s\n"),
 398                                 features);
 399                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 400                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 401                                           "not supported.\n"),
 402                                 e2p_feature2string(type_err &
 403                                                    E2P_FEATURE_TYPE_MASK,
 404                                                    mask_err));
 405                 else
 406                         fprintf(stderr, _("Setting filesystem feature '%s' "
 407                                           "not supported.\n"),
 408                                 e2p_feature2string(type_err, mask_err));
 409                 return 1;
 410         }
 411
 412         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 413                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 414                     !(mount_flags & EXT2_MF_READONLY)) {
 415                         fputs(_("The has_journal feature may only be "
 416                                 "cleared when the filesystem is\n"
 417                                 "unmounted or mounted "
 418                                 "read-only.\n"), stderr);
 419                         return 1;
 420                 }
 421                 if (sb->s_feature_incompat &
 422                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 423                         fputs(_("The needs_recovery flag is set.  "
 424                                 "Please run e2fsck before clearing\n"
 425                                 "the has_journal flag.\n"), stderr);
 426                         return 1;
 427                 }
 428                 if (sb->s_journal_inum) {
 429                         if (remove_journal_inode(fs))
 430                                 return 1;
 431                 }
 432                 if (sb->s_journal_dev) {
 433                         if (remove_journal_device(fs))
 434                                 return 1;
 435                 }
 436         }
 437         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 438                 int error;
 439
 440                 if ((mount_flags & EXT2_MF_MOUNTED) ||
 441                     (mount_flags & EXT2_MF_READONLY)) {
 442                         fputs(_("The multiple mount protection feature can't\n"
 443                                 "be set if the filesystem is mounted or\n"
 444                                 "read-only.\n"), stderr);
 445                         return 1;
 446                 }
 447
 448                 error = ext2fs_mmp_init(fs);
 449                 if (error) {
 450                         fputs(_("\nError while enabling multiple mount "
 451                                 "protection feature."), stderr);
 452                         return 1;
 453                 }
 454
 455                 /*
 456                  * We want to update group desc with the new free blocks count
 457                  */
 458                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 459
 460                 printf(_("Multiple mount protection has been enabled "
 461                          "with update interval %ds.\n"),
 462                        sb->s_mmp_update_interval);
 463         }
 464
 465         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
 466                 int error;
 467
 468                 if (mount_flags & EXT2_MF_READONLY) {
 469                         fputs(_("The multiple mount protection feature cannot\n"
 470                                 "be disabled if the filesystem is readonly.\n"),
 471                                 stderr);
 472                         return 1;
 473                 }
 474
 475                 error = ext2fs_read_bitmaps(fs);
 476                 if (error) {
 477                         fputs(_("Error while reading bitmaps\n"), stderr);
 478                         return 1;
 479                 }
 480
 481                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
 482                 if (error) {
 483                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
 484
 485                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
 486                                 printf(_("Magic number in MMP block does not "
 487                                          "match. expected: %x, actual: %x\n"),
 488                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
 489                         else
 490                                 com_err(program_name, error,
 491                                         _("while reading MMP block."));
 492                         goto mmp_error;
 493                 }
 494
 495                 /* We need to force out the group descriptors as well */
 496                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 497                 ext2fs_block_alloc_stats(fs, sb->s_mmp_block, -1);
 498 mmp_error:
 499                 sb->s_mmp_block = 0;
 500                 sb->s_mmp_update_interval = 0;
 501         }
 502
 503         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 504                 /*
 505                  * If adding a journal flag, let the create journal
 506                  * code below handle setting the flag and creating the
 507                  * journal.  We supply a default size if necessary.
 508                  */
 509                 if (!journal_size)
 510                         journal_size = -1;
 511                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 512         }
 513
 514         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 515                 if (!sb->s_def_hash_version)
 516                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 517                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 518                         uuid_generate((unsigned char *) sb->s_hash_seed);
 519         }
 520
 521         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 522                 if (ext2fs_check_desc(fs)) {
 523                         fputs(_("Clearing the flex_bg flag would "
 524                                 "cause the the filesystem to be\n"
 525                                 "inconsistent.\n"), stderr);
 526                         return 1;
 527                 }
 528         }
 529
 530         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 531                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 532                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 533                     !(mount_flags & EXT2_MF_READONLY)) {
 534                         fputs(_("The huge_file feature may only be "
 535                                 "cleared when the filesystem is\n"
 536                                 "unmounted or mounted "
 537                                 "read-only.\n"), stderr);
 538                         return 1;
 539                 }
 540         }
 541
 542         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 543                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 544                 for (i = 0; i < fs->group_desc_count; i++) {
 545                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 546                         gd->bg_itable_unused = 0;
 547                         gd->bg_flags = EXT2_BG_INODE_ZEROED;
 548                         ext2fs_group_desc_csum_set(fs, i);
 549                 }
 550                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 551         }
 552
 553         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 554                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
 555                 for (i = 0; i < fs->group_desc_count; i++) {
 556                         gd = ext2fs_group_desc(fs, fs->group_desc, i);
 557                         if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
 558                                 /*
 559                                  * XXX what we really should do is zap
 560                                  * uninitialized inode tables instead.
 561                                  */
 562                                 request_fsck_afterwards(fs);
 563                                 break;
 564                         }
 565                         gd->bg_itable_unused = 0;
 566                         gd->bg_flags = 0;
 567                         gd->bg_checksum = 0;
 568                 }
 569                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 570         }
 571
 572         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
 573                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 574                 /*
 575                  * Set the Q_flag here and handle the quota options in the code
 576                  * below.
 577                  */
 578                 if (!Q_flag) {
 579                         Q_flag = 1;
 580                         /* Enable both user quota and group quota by default */
 581                         usrquota = QOPT_ENABLE;
 582                         grpquota = QOPT_ENABLE;
 583                 }
 584                 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 585         }
 586
 587         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 588                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
 589                 /*
 590                  * Set the Q_flag here and handle the quota options in the code
 591                  * below.
 592                  */
 593                 if (Q_flag)
 594                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
 595                                 "arguments.\n"), stderr);
 596                 Q_flag = 1;
 597                 /* Disable both user quota and group quota by default */
 598                 usrquota = QOPT_DISABLE;
 599                 grpquota = QOPT_DISABLE;
 600         }
 601
 602         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 603             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 604              sb->s_feature_incompat))
 605                 ext2fs_update_dynamic_rev(fs);
 606
 607         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 608                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 609             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 610                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 611             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 612                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 613             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 614                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 615             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 616                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
 617                 request_fsck_afterwards(fs);
 618
 619         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 620             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 621             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 622                 ext2fs_mark_super_dirty(fs);
 623
 624         return 0;
 625 }
 626
 627 /*
 628  * Add a journal to the filesystem.
 629  */
 630 static int add_journal(ext2_filsys fs)
 631 {
 632         unsigned long journal_blocks;
 633         errcode_t       retval;
 634         ext2_filsys     jfs;
 635         io_manager      io_ptr;
 636
 637         if (fs->super->s_feature_compat &
 638             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 639                 fputs(_("The filesystem already has a journal.\n"), stderr);
 640                 goto err;
 641         }
 642         if (journal_device) {
 643                 check_plausibility(journal_device);
 644                 check_mount(journal_device, 0, _("journal"));
 645 #ifdef CONFIG_TESTIO_DEBUG
 646                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 647                         io_ptr = test_io_manager;
 648                         test_io_backing_manager = unix_io_manager;
 649                 } else
 650 #endif
 651                         io_ptr = unix_io_manager;
 652                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 653                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 654                                      fs->blocksize, io_ptr, &jfs);
 655                 if (retval) {
 656                         com_err(program_name, retval,
 657                                 _("\n\twhile trying to open journal on %s\n"),
 658                                 journal_device);
 659                         goto err;
 660                 }
 661                 printf(_("Creating journal on device %s: "),
 662                        journal_device);
 663                 fflush(stdout);
 664
 665                 retval = ext2fs_add_journal_device(fs, jfs);
 666                 ext2fs_close(jfs);
 667                 if (retval) {
 668                         com_err(program_name, retval,
 669                                 _("while adding filesystem to journal on %s"),
 670                                 journal_device);
 671                         goto err;
 672                 }
 673                 fputs(_("done\n"), stdout);
 674         } else if (journal_size) {
 675                 fputs(_("Creating journal inode: "), stdout);
 676                 fflush(stdout);
 677                 journal_blocks = figure_journal_size(journal_size, fs);
 678
 679                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 680                                                   journal_flags);
 681                 if (retval) {
 682                         fprintf(stderr, "\n");
 683                         com_err(program_name, retval,
 684                                 _("\n\twhile trying to create journal file"));
 685                         return retval;
 686                 } else
 687                         fputs(_("done\n"), stdout);
 688                 /*
 689                  * If the filesystem wasn't mounted, we need to force
 690                  * the block group descriptors out.
 691                  */
 692                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 693                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 694         }
 695         print_check_message(fs->super->s_max_mnt_count,
 696                             fs->super->s_checkinterval);
 697         return 0;
 698
 699 err:
 700         free(journal_device);
 701         return 1;
 702 }
 703
 704 void handle_quota_options(ext2_filsys fs)
 705 {
 706         quota_ctx_t qctx;
 707         ext2_ino_t qf_ino;
 708
 709         if (!usrquota && !grpquota)
 710                 /* Nothing to do. */
 711                 return;
 712
 713         quota_init_context(&qctx, fs, -1);
 714
 715         if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
 716                 quota_compute_usage(qctx);
 717
 718         if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
 719                 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
 720                                                 QFMT_VFS_V1)) > 0)
 721                         quota_update_limits(qctx, qf_ino, USRQUOTA);
 722                 quota_write_inode(qctx, USRQUOTA);
 723         } else if (usrquota == QOPT_DISABLE) {
 724                 quota_remove_inode(fs, USRQUOTA);
 725         }
 726
 727         if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
 728                 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
 729                                                 QFMT_VFS_V1)) > 0)
 730                         quota_update_limits(qctx, qf_ino, GRPQUOTA);
 731                 quota_write_inode(qctx, GRPQUOTA);
 732         } else if (grpquota == QOPT_DISABLE) {
 733                 quota_remove_inode(fs, GRPQUOTA);
 734         }
 735
 736         quota_release_context(&qctx);
 737
 738         if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
 739                 fprintf(stderr, _("\nWarning: the quota feature is still "
 740                                   "under development\n"
 741                                   "See https://ext4.wiki.kernel.org/"
 742                                   "index.php/Quota for more information\n\n"));
 743                 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
 744                 ext2fs_mark_super_dirty(fs);
 745         } else if (!fs->super->s_usr_quota_inum &&
 746                    !fs->super->s_grp_quota_inum) {
 747                 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
 748                 ext2fs_mark_super_dirty(fs);
 749         }
 750
 751         return;
 752 }
 753
 754 void parse_quota_opts(const char *opts)
 755 {
 756         char    *buf, *token, *next, *p;
 757         int     len;
 758
 759         len = strlen(opts);
 760         buf = malloc(len+1);
 761         if (!buf) {
 762                 fputs(_("Couldn't allocate memory to parse quota "
 763                         "options!\n"), stderr);
 764                 exit(1);
 765         }
 766         strcpy(buf, opts);
 767         for (token = buf; token && *token; token = next) {
 768                 p = strchr(token, ',');
 769                 next = 0;
 770                 if (p) {
 771                         *p = 0;
 772                         next = p+1;
 773                 }
 774
 775                 if (strcmp(token, "usrquota") == 0) {
 776                         usrquota = QOPT_ENABLE;
 777                 } else if (strcmp(token, "^usrquota") == 0) {
 778                         usrquota = QOPT_DISABLE;
 779                 } else if (strcmp(token, "grpquota") == 0) {
 780                         grpquota = QOPT_ENABLE;
 781                 } else if (strcmp(token, "^grpquota") == 0) {
 782                         grpquota = QOPT_DISABLE;
 783                 } else {
 784                         fputs(_("\nBad quota options specified.\n\n"
 785                                 "Following valid quota options are available "
 786                                 "(pass by separating with comma):\n"
 787                                 "\t[^]usrquota\n"
 788                                 "\t[^]grpquota\n"
 789                                 "\n\n"), stderr);
 790                         free(buf);
 791                         exit(1);
 792                 }
 793         }
 794         free(buf);
 795 }
 796
 797
 798
 799 static void parse_e2label_options(int argc, char ** argv)
 800 {
 801         if ((argc < 2) || (argc > 3)) {
 802                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 803                 exit(1);
 804         }
 805         io_options = strchr(argv[1], '?');
 806         if (io_options)
 807                 *io_options++ = 0;
 808         device_name = blkid_get_devname(NULL, argv[1], NULL);
 809         if (!device_name) {
 810                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 811                         argv[1]);
 812                 exit(1);
 813         }
 814         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 815         if (argc == 3) {
 816                 open_flag |= EXT2_FLAG_RW;
 817                 L_flag = 1;
 818                 new_label = argv[2];
 819         } else
 820                 print_label++;
 821 }
 822
 823 static time_t parse_time(char *str)
 824 {
 825         struct  tm      ts;
 826
 827         if (strcmp(str, "now") == 0) {
 828                 return (time(0));
 829         }
 830         memset(&ts, 0, sizeof(ts));
 831 #ifdef HAVE_STRPTIME
 832         strptime(str, "%Y%m%d%H%M%S", &ts);
 833 #else
 834         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 835                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 836         ts.tm_year -= 1900;
 837         ts.tm_mon -= 1;
 838         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 839             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 840             ts.tm_min > 59 || ts.tm_sec > 61)
 841                 ts.tm_mday = 0;
 842 #endif
 843         if (ts.tm_mday == 0) {
 844                 com_err(program_name, 0,
 845                         _("Couldn't parse date/time specifier: %s"),
 846                         str);
 847                 usage();
 848         }
 849         ts.tm_isdst = -1;
 850         return (mktime(&ts));
 851 }
 852
 853 static void parse_tune2fs_options(int argc, char **argv)
 854 {
 855         int c;
 856         char *tmp;
 857         struct group *gr;
 858         struct passwd *pw;
 859
 860         open_flag = 0;
 861
 862         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 863         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:Q:T:U:")) != EOF)
 864                 switch (c) {
 865                 case 'c':
 866                         max_mount_count = strtol(optarg, &tmp, 0);
 867                         if (*tmp || max_mount_count > 16000) {
 868                                 com_err(program_name, 0,
 869                                         _("bad mounts count - %s"),
 870                                         optarg);
 871                                 usage();
 872                         }
 873                         if (max_mount_count == 0)
 874                                 max_mount_count = -1;
 875                         c_flag = 1;
 876                         open_flag = EXT2_FLAG_RW;
 877                         break;
 878                 case 'C':
 879                         mount_count = strtoul(optarg, &tmp, 0);
 880                         if (*tmp || mount_count > 16000) {
 881                                 com_err(program_name, 0,
 882                                         _("bad mounts count - %s"),
 883                                         optarg);
 884                                 usage();
 885                         }
 886                         C_flag = 1;
 887                         open_flag = EXT2_FLAG_RW;
 888                         break;
 889                 case 'e':
 890                         if (strcmp(optarg, "continue") == 0)
 891                                 errors = EXT2_ERRORS_CONTINUE;
 892                         else if (strcmp(optarg, "remount-ro") == 0)
 893                                 errors = EXT2_ERRORS_RO;
 894                         else if (strcmp(optarg, "panic") == 0)
 895                                 errors = EXT2_ERRORS_PANIC;
 896                         else {
 897                                 com_err(program_name, 0,
 898                                         _("bad error behavior - %s"),
 899                                         optarg);
 900                                 usage();
 901                         }
 902                         e_flag = 1;
 903                         open_flag = EXT2_FLAG_RW;
 904                         break;
 905                 case 'E':
 906                         extended_cmd = optarg;
 907                         open_flag |= EXT2_FLAG_RW;
 908                         break;
 909                 case 'f': /* Force */
 910                         f_flag = 1;
 911                         break;
 912                 case 'g':
 913                         resgid = strtoul(optarg, &tmp, 0);
 914                         if (*tmp) {
 915                                 gr = getgrnam(optarg);
 916                                 if (gr == NULL)
 917                                         tmp = optarg;
 918                                 else {
 919                                         resgid = gr->gr_gid;
 920                                         *tmp = 0;
 921                                 }
 922                         }
 923                         if (*tmp) {
 924                                 com_err(program_name, 0,
 925                                         _("bad gid/group name - %s"),
 926                                         optarg);
 927                                 usage();
 928                         }
 929                         g_flag = 1;
 930                         open_flag = EXT2_FLAG_RW;
 931                         break;
 932                 case 'i':
 933                         interval = strtoul(optarg, &tmp, 0);
 934                         switch (*tmp) {
 935                         case 's':
 936                                 tmp++;
 937                                 break;
 938                         case '\0':
 939                         case 'd':
 940                         case 'D': /* days */
 941                                 interval *= 86400;
 942                                 if (*tmp != '\0')
 943                                         tmp++;
 944                                 break;
 945                         case 'm':
 946                         case 'M': /* months! */
 947                                 interval *= 86400 * 30;
 948                                 tmp++;
 949                                 break;
 950                         case 'w':
 951                         case 'W': /* weeks */
 952                                 interval *= 86400 * 7;
 953                                 tmp++;
 954                                 break;
 955                         }
 956                         if (*tmp) {
 957                                 com_err(program_name, 0,
 958                                         _("bad interval - %s"), optarg);
 959                                 usage();
 960                         }
 961                         i_flag = 1;
 962                         open_flag = EXT2_FLAG_RW;
 963                         break;
 964                 case 'j':
 965                         if (!journal_size)
 966                                 journal_size = -1;
 967                         open_flag = EXT2_FLAG_RW;
 968                         break;
 969                 case 'J':
 970                         parse_journal_opts(optarg);
 971                         open_flag = EXT2_FLAG_RW;
 972                         break;
 973                 case 'l':
 974                         l_flag = 1;
 975                         break;
 976                 case 'L':
 977                         new_label = optarg;
 978                         L_flag = 1;
 979                         open_flag |= EXT2_FLAG_RW |
 980                                 EXT2_FLAG_JOURNAL_DEV_OK;
 981                         break;
 982                 case 'm':
 983                         reserved_ratio = strtod(optarg, &tmp);
 984                         if (*tmp || reserved_ratio > 50 ||
 985                             reserved_ratio < 0) {
 986                                 com_err(program_name, 0,
 987                                         _("bad reserved block ratio - %s"),
 988                                         optarg);
 989                                 usage();
 990                         }
 991                         m_flag = 1;
 992                         open_flag = EXT2_FLAG_RW;
 993                         break;
 994                 case 'M':
 995                         new_last_mounted = optarg;
 996                         M_flag = 1;
 997                         open_flag = EXT2_FLAG_RW;
 998                         break;
 999                 case 'o':
1000                         if (mntopts_cmd) {
1001                                 com_err(program_name, 0,
1002                                         _("-o may only be specified once"));
1003                                 usage();
1004                         }
1005                         mntopts_cmd = optarg;
1006                         open_flag = EXT2_FLAG_RW;
1007                         break;
1008                 case 'O':
1009                         if (features_cmd) {
1010                                 com_err(program_name, 0,
1011                                         _("-O may only be specified once"));
1012                                 usage();
1013                         }
1014                         features_cmd = optarg;
1015                         open_flag = EXT2_FLAG_RW;
1016                         break;
1017                 case 'Q':
1018                         Q_flag = 1;
1019                         parse_quota_opts(optarg);
1020                         open_flag = EXT2_FLAG_RW;
1021                         break;
1022                 case 'r':
1023                         reserved_blocks = strtoul(optarg, &tmp, 0);
1024                         if (*tmp) {
1025                                 com_err(program_name, 0,
1026                                         _("bad reserved blocks count - %s"),
1027                                         optarg);
1028                                 usage();
1029                         }
1030                         r_flag = 1;
1031                         open_flag = EXT2_FLAG_RW;
1032                         break;
1033                 case 's': /* Deprecated */
1034                         s_flag = atoi(optarg);
1035                         open_flag = EXT2_FLAG_RW;
1036                         break;
1037                 case 'T':
1038                         T_flag = 1;
1039                         last_check_time = parse_time(optarg);
1040                         open_flag = EXT2_FLAG_RW;
1041                         break;
1042                 case 'u':
1043                                 resuid = strtoul(optarg, &tmp, 0);
1044                                 if (*tmp) {
1045                                         pw = getpwnam(optarg);
1046                                         if (pw == NULL)
1047                                                 tmp = optarg;
1048                                         else {
1049                                                 resuid = pw->pw_uid;
1050                                                 *tmp = 0;
1051                                         }
1052                                 }
1053                                 if (*tmp) {
1054                                         com_err(program_name, 0,
1055                                                 _("bad uid/user name - %s"),
1056                                                 optarg);
1057                                         usage();
1058                                 }
1059                                 u_flag = 1;
1060                                 open_flag = EXT2_FLAG_RW;
1061                                 break;
1062                 case 'U':
1063                         new_UUID = optarg;
1064                         U_flag = 1;
1065                         open_flag = EXT2_FLAG_RW |
1066                                 EXT2_FLAG_JOURNAL_DEV_OK;
1067                         break;
1068                 case 'I':
1069                         new_inode_size = strtoul(optarg, &tmp, 0);
1070                         if (*tmp) {
1071                                 com_err(program_name, 0,
1072                                         _("bad inode size - %s"),
1073                                         optarg);
1074                                 usage();
1075                         }
1076                         if (!((new_inode_size &
1077                                (new_inode_size - 1)) == 0)) {
1078                                 com_err(program_name, 0,
1079                                         _("Inode size must be a "
1080                                           "power of two- %s"),
1081                                         optarg);
1082                                 usage();
1083                         }
1084                         open_flag = EXT2_FLAG_RW;
1085                         I_flag = 1;
1086                         break;
1087                 default:
1088                         usage();
1089                 }
1090         if (optind < argc - 1 || optind == argc)
1091                 usage();
1092         if (!open_flag && !l_flag)
1093                 usage();
1094         io_options = strchr(argv[optind], '?');
1095         if (io_options)
1096                 *io_options++ = 0;
1097         device_name = blkid_get_devname(NULL, argv[optind], NULL);
1098         if (!device_name) {
1099                 com_err(program_name, 0, _("Unable to resolve '%s'"),
1100                         argv[optind]);
1101                 exit(1);
1102         }
1103 }
1104
1105 #ifdef CONFIG_BUILD_FINDFS
1106 void do_findfs(int argc, char **argv)
1107 {
1108         char    *dev;
1109
1110         if ((argc != 2) ||
1111             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1112                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1113                 exit(2);
1114         }
1115         dev = blkid_get_devname(NULL, argv[1], NULL);
1116         if (!dev) {
1117                 com_err("findfs", 0, _("Unable to resolve '%s'"),
1118                         argv[1]);
1119                 exit(1);
1120         }
1121         puts(dev);
1122         exit(0);
1123 }
1124 #endif
1125
1126 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1127 {
1128         char    *buf, *token, *next, *p, *arg;
1129         int     len, hash_alg;
1130         int     r_usage = 0;
1131
1132         len = strlen(opts);
1133         buf = malloc(len+1);
1134         if (!buf) {
1135                 fprintf(stderr,
1136                         _("Couldn't allocate memory to parse options!\n"));
1137                 return 1;
1138         }
1139         strcpy(buf, opts);
1140         for (token = buf; token && *token; token = next) {
1141                 p = strchr(token, ',');
1142                 next = 0;
1143                 if (p) {
1144                         *p = 0;
1145                         next = p+1;
1146                 }
1147                 arg = strchr(token, '=');
1148                 if (arg) {
1149                         *arg = 0;
1150                         arg++;
1151                 }
1152                 if (strcmp(token, "clear-mmp") == 0 ||
1153                     strcmp(token, "clear_mmp") == 0) {
1154                         clear_mmp = 1;
1155                 } else if (strcmp(token, "mmp_update_interval") == 0) {
1156                         unsigned long interval;
1157                         if (!arg) {
1158                                 r_usage++;
1159                                 continue;
1160                         }
1161                         interval = strtoul(arg, &p, 0);
1162                         if (*p) {
1163                                 fprintf(stderr,
1164                                         _("Invalid mmp_update_interval: %s\n"),
1165                                         arg);
1166                                 r_usage++;
1167                                 continue;
1168                         }
1169                         if (interval == 0) {
1170                                 interval = EXT4_MMP_UPDATE_INTERVAL;
1171                         } else if (interval > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1172                                 fprintf(stderr,
1173                                         _("mmp_update_interval too big: %lu\n"),
1174                                         interval);
1175                                 r_usage++;
1176                                 continue;
1177                         }
1178                         printf(P_("Setting multiple mount protection update "
1179                                   "interval to %lu second\n",
1180                                   "Setting multiple mount protection update "
1181                                   "interval to %lu seconds\n", interval),
1182                                interval);
1183                         fs->super->s_mmp_update_interval = interval;
1184                         ext2fs_mark_super_dirty(fs);
1185                 } else if (!strcmp(token, "test_fs")) {
1186                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1187                         printf("Setting test filesystem flag\n");
1188                         ext2fs_mark_super_dirty(fs);
1189                 } else if (!strcmp(token, "^test_fs")) {
1190                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1191                         printf("Clearing test filesystem flag\n");
1192                         ext2fs_mark_super_dirty(fs);
1193                 } else if (strcmp(token, "stride") == 0) {
1194                         if (!arg) {
1195                                 r_usage++;
1196                                 continue;
1197                         }
1198                         stride = strtoul(arg, &p, 0);
1199                         if (*p) {
1200                                 fprintf(stderr,
1201                                         _("Invalid RAID stride: %s\n"),
1202                                         arg);
1203                                 r_usage++;
1204                                 continue;
1205                         }
1206                         stride_set = 1;
1207                 } else if (strcmp(token, "stripe-width") == 0 ||
1208                            strcmp(token, "stripe_width") == 0) {
1209                         if (!arg) {
1210                                 r_usage++;
1211                                 continue;
1212                         }
1213                         stripe_width = strtoul(arg, &p, 0);
1214                         if (*p) {
1215                                 fprintf(stderr,
1216                                         _("Invalid RAID stripe-width: %s\n"),
1217                                         arg);
1218                                 r_usage++;
1219                                 continue;
1220                         }
1221                         stripe_width_set = 1;
1222                 } else if (strcmp(token, "hash_alg") == 0 ||
1223                            strcmp(token, "hash-alg") == 0) {
1224                         if (!arg) {
1225                                 r_usage++;
1226                                 continue;
1227                         }
1228                         hash_alg = e2p_string2hash(arg);
1229                         if (hash_alg < 0) {
1230                                 fprintf(stderr,
1231                                         _("Invalid hash algorithm: %s\n"),
1232                                         arg);
1233                                 r_usage++;
1234                                 continue;
1235                         }
1236                         fs->super->s_def_hash_version = hash_alg;
1237                         printf(_("Setting default hash algorithm "
1238                                  "to %s (%d)\n"),
1239                                arg, hash_alg);
1240                         ext2fs_mark_super_dirty(fs);
1241                 } else if (!strcmp(token, "mount_opts")) {
1242                         if (!arg) {
1243                                 r_usage++;
1244                                 continue;
1245                         }
1246                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1247                                 fprintf(stderr,
1248                                         "Extended mount options too long\n");
1249                                 continue;
1250                         }
1251                         ext_mount_opts = strdup(arg);
1252                 } else
1253                         r_usage++;
1254         }
1255         if (r_usage) {
1256                 fprintf(stderr, _("\nBad options specified.\n\n"
1257                         "Extended options are separated by commas, "
1258                         "and may take an argument which\n"
1259                         "\tis set off by an equals ('=') sign.\n\n"
1260                         "Valid extended options are:\n"
1261                         "\tclear_mmp\n"
1262                         "\thash_alg=<hash algorithm>\n"
1263                         "\tmount_opts=<extended default mount options>\n"
1264                         "\tstride=<RAID per-disk chunk size in blocks>\n"
1265                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
1266                         "\ttest_fs\n"
1267                         "\t^test_fs\n"));
1268                 free(buf);
1269                 return 1;
1270         }
1271         free(buf);
1272
1273         return 0;
1274 }
1275
1276 /*
1277  * Fill in the block bitmap bmap with the information regarding the
1278  * blocks to be moved
1279  */
1280 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1281                             ext2fs_block_bitmap bmap)
1282 {
1283         dgrp_t i;
1284         int retval;
1285         ext2_badblocks_list bb_list = 0;
1286         blk64_t j, needed_blocks = 0;
1287         blk64_t start_blk, end_blk;
1288
1289         retval = ext2fs_read_bb_inode(fs, &bb_list);
1290         if (retval)
1291                 return retval;
1292
1293         for (i = 0; i < fs->group_desc_count; i++) {
1294                 start_blk = ext2fs_inode_table_loc(fs, i) +
1295                                         fs->inode_blocks_per_group;
1296
1297                 end_blk = ext2fs_inode_table_loc(fs, i) +
1298                                         new_ino_blks_per_grp;
1299
1300                 for (j = start_blk; j < end_blk; j++) {
1301                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1302                                 /*
1303                                  * IF the block is a bad block we fail
1304                                  */
1305                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
1306                                         ext2fs_badblocks_list_free(bb_list);
1307                                         return ENOSPC;
1308                                 }
1309
1310                                 ext2fs_mark_block_bitmap2(bmap, j);
1311                         } else {
1312                                 /*
1313                                  * We are going to use this block for
1314                                  * inode table. So mark them used.
1315                                  */
1316                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1317                         }
1318                 }
1319                 needed_blocks += end_blk - start_blk;
1320         }
1321
1322         ext2fs_badblocks_list_free(bb_list);
1323         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1324                 return ENOSPC;
1325
1326         return 0;
1327 }
1328
1329 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1330 {
1331         dgrp_t group;
1332         group = ext2fs_group_of_blk(fs, blk);
1333         if (ext2fs_block_bitmap_loc(fs, group) == blk)
1334                 return 1;
1335         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1336                 return 1;
1337         return 0;
1338 }
1339
1340 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1341 {
1342         blk_t start_blk, end_blk;
1343         start_blk = fs->super->s_first_data_block +
1344                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1345         /*
1346          * We cannot get new block beyond end_blk for for the last block group
1347          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1348          */
1349         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1350         if (blk >= start_blk && blk <= end_blk)
1351                 return 1;
1352         return 0;
1353 }
1354
1355 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1356 {
1357
1358         char *buf;
1359         dgrp_t group = 0;
1360         errcode_t retval;
1361         int meta_data = 0;
1362         blk64_t blk, new_blk, goal;
1363         struct blk_move *bmv;
1364
1365         retval = ext2fs_get_mem(fs->blocksize, &buf);
1366         if (retval)
1367                 return retval;
1368
1369         for (new_blk = blk = fs->super->s_first_data_block;
1370              blk < ext2fs_blocks_count(fs->super); blk++) {
1371                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1372                         continue;
1373
1374                 if (ext2fs_is_meta_block(fs, blk)) {
1375                         /*
1376                          * If the block is mapping a fs meta data block
1377                          * like group desc/block bitmap/inode bitmap. We
1378                          * should find a block in the same group and fix
1379                          * the respective fs metadata pointers. Otherwise
1380                          * fail
1381                          */
1382                         group = ext2fs_group_of_blk(fs, blk);
1383                         goal = ext2fs_group_first_block2(fs, group);
1384                         meta_data = 1;
1385
1386                 } else {
1387                         goal = new_blk;
1388                 }
1389                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1390                 if (retval)
1391                         goto err_out;
1392
1393                 /* new fs meta data block should be in the same group */
1394                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1395                         retval = ENOSPC;
1396                         goto err_out;
1397                 }
1398
1399                 /* Mark this block as allocated */
1400                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1401
1402                 /* Add it to block move list */
1403                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1404                 if (retval)
1405                         goto err_out;
1406
1407                 bmv->old_loc = blk;
1408                 bmv->new_loc = new_blk;
1409
1410                 list_add(&(bmv->list), &blk_move_list);
1411
1412                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1413                 if (retval)
1414                         goto err_out;
1415
1416                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1417                 if (retval)
1418                         goto err_out;
1419         }
1420
1421 err_out:
1422         ext2fs_free_mem(&buf);
1423         return retval;
1424 }
1425
1426 static blk64_t translate_block(blk64_t blk)
1427 {
1428         struct list_head *entry;
1429         struct blk_move *bmv;
1430
1431         list_for_each(entry, &blk_move_list) {
1432                 bmv = list_entry(entry, struct blk_move, list);
1433                 if (bmv->old_loc == blk)
1434                         return bmv->new_loc;
1435         }
1436
1437         return 0;
1438 }
1439
1440 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1441                          blk64_t *block_nr,
1442                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1443                          blk64_t ref_block EXT2FS_ATTR((unused)),
1444                          int ref_offset EXT2FS_ATTR((unused)),
1445                          void *priv_data)
1446 {
1447         int ret = 0;
1448         blk64_t new_blk;
1449         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1450
1451         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1452                 return 0;
1453         new_blk = translate_block(*block_nr);
1454         if (new_blk) {
1455                 *block_nr = new_blk;
1456                 /*
1457                  * This will force the ext2fs_write_inode in the iterator
1458                  */
1459                 ret |= BLOCK_CHANGED;
1460         }
1461
1462         return ret;
1463 }
1464
1465 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1466 {
1467         errcode_t retval = 0;
1468         ext2_ino_t ino;
1469         blk64_t blk;
1470         char *block_buf = 0;
1471         struct ext2_inode inode;
1472         ext2_inode_scan scan = NULL;
1473
1474         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1475         if (retval)
1476                 return retval;
1477
1478         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1479         if (retval)
1480                 goto err_out;
1481
1482         while (1) {
1483                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1484                 if (retval)
1485                         goto err_out;
1486
1487                 if (!ino)
1488                         break;
1489
1490                 if (inode.i_links_count == 0)
1491                         continue; /* inode not in use */
1492
1493                 /* FIXME!!
1494                  * If we end up modifying the journal inode
1495                  * the sb->s_jnl_blocks will differ. But a
1496                  * subsequent e2fsck fixes that.
1497                  * Do we need to fix this ??
1498                  */
1499
1500                 if (ext2fs_file_acl_block(fs, &inode) &&
1501                     ext2fs_test_block_bitmap2(bmap,
1502                                         ext2fs_file_acl_block(fs, &inode))) {
1503                         blk = translate_block(ext2fs_file_acl_block(fs,
1504                                                                     &inode));
1505                         if (!blk)
1506                                 continue;
1507
1508                         ext2fs_file_acl_block_set(fs, &inode, blk);
1509
1510                         /*
1511                          * Write the inode to disk so that inode table
1512                          * resizing can work
1513                          */
1514                         retval = ext2fs_write_inode(fs, ino, &inode);
1515                         if (retval)
1516                                 goto err_out;
1517                 }
1518
1519                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
1520                         continue;
1521
1522                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1523                                                process_block, bmap);
1524                 if (retval)
1525                         goto err_out;
1526
1527         }
1528
1529 err_out:
1530         ext2fs_free_mem(&block_buf);
1531
1532         return retval;
1533 }
1534
1535 /*
1536  * We need to scan for inode and block bitmaps that may need to be
1537  * moved.  This can take place if the filesystem was formatted for
1538  * RAID arrays using the mke2fs's extended option "stride".
1539  */
1540 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1541 {
1542         dgrp_t i;
1543         blk_t blk, new_blk;
1544
1545         for (i = 0; i < fs->group_desc_count; i++) {
1546                 blk = ext2fs_block_bitmap_loc(fs, i);
1547                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1548                         new_blk = translate_block(blk);
1549                         if (!new_blk)
1550                                 continue;
1551                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1552                 }
1553
1554                 blk = ext2fs_inode_bitmap_loc(fs, i);
1555                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1556                         new_blk = translate_block(blk);
1557                         if (!new_blk)
1558                                 continue;
1559                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1560                 }
1561         }
1562         return 0;
1563 }
1564
1565 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1566 {
1567         dgrp_t i;
1568         blk64_t blk;
1569         errcode_t retval;
1570         int new_ino_blks_per_grp;
1571         unsigned int j;
1572         char *old_itable = NULL, *new_itable = NULL;
1573         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1574         unsigned long old_ino_size;
1575         int old_itable_size, new_itable_size;
1576
1577         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1578         old_ino_size = EXT2_INODE_SIZE(fs->super);
1579
1580         new_ino_blks_per_grp = ext2fs_div_ceil(
1581                                         EXT2_INODES_PER_GROUP(fs->super) *
1582                                         new_ino_size,
1583                                         fs->blocksize);
1584
1585         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1586
1587         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1588         if (retval)
1589                 return retval;
1590
1591         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1592         if (retval)
1593                 goto err_out;
1594
1595         tmp_old_itable = old_itable;
1596         tmp_new_itable = new_itable;
1597
1598         for (i = 0; i < fs->group_desc_count; i++) {
1599                 blk = ext2fs_inode_table_loc(fs, i);
1600                 retval = io_channel_read_blk64(fs->io, blk,
1601                                 fs->inode_blocks_per_group, old_itable);
1602                 if (retval)
1603                         goto err_out;
1604
1605                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1606                         memcpy(new_itable, old_itable, old_ino_size);
1607
1608                         memset(new_itable+old_ino_size, 0,
1609                                         new_ino_size - old_ino_size);
1610
1611                         new_itable += new_ino_size;
1612                         old_itable += old_ino_size;
1613                 }
1614
1615                 /* reset the pointer */
1616                 old_itable = tmp_old_itable;
1617                 new_itable = tmp_new_itable;
1618
1619                 retval = io_channel_write_blk64(fs->io, blk,
1620                                         new_ino_blks_per_grp, new_itable);
1621                 if (retval)
1622                         goto err_out;
1623         }
1624
1625         /* Update the meta data */
1626         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1627         fs->super->s_inode_size = new_ino_size;
1628
1629 err_out:
1630         if (old_itable)
1631                 ext2fs_free_mem(&old_itable);
1632
1633         if (new_itable)
1634                 ext2fs_free_mem(&new_itable);
1635
1636         return retval;
1637 }
1638
1639 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1640 {
1641         blk64_t         blk;
1642         ext2_ino_t      ino;
1643         unsigned int    group = 0;
1644         unsigned int    count = 0;
1645         int             total_free = 0;
1646         int             group_free = 0;
1647
1648         /*
1649          * First calculate the block statistics
1650          */
1651         for (blk = fs->super->s_first_data_block;
1652              blk < ext2fs_blocks_count(fs->super); blk++) {
1653                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1654                         group_free++;
1655                         total_free++;
1656                 }
1657                 count++;
1658                 if ((count == fs->super->s_blocks_per_group) ||
1659                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1660                         ext2fs_bg_free_blocks_count_set(fs, group++,
1661                                                         group_free);
1662                         count = 0;
1663                         group_free = 0;
1664                 }
1665         }
1666         total_free = EXT2FS_C2B(fs, total_free);
1667         ext2fs_free_blocks_count_set(fs->super, total_free);
1668
1669         /*
1670          * Next, calculate the inode statistics
1671          */
1672         group_free = 0;
1673         total_free = 0;
1674         count = 0;
1675         group = 0;
1676
1677         /* Protect loop from wrap-around if s_inodes_count maxed */
1678         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1679                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1680                         group_free++;
1681                         total_free++;
1682                 }
1683                 count++;
1684                 if ((count == fs->super->s_inodes_per_group) ||
1685                     (ino == fs->super->s_inodes_count)) {
1686                         ext2fs_bg_free_inodes_count_set(fs, group++,
1687                                                         group_free);
1688                         count = 0;
1689                         group_free = 0;
1690                 }
1691         }
1692         fs->super->s_free_inodes_count = total_free;
1693         ext2fs_mark_super_dirty(fs);
1694         return 0;
1695 }
1696
1697 #define list_for_each_safe(pos, pnext, head) \
1698         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1699              pos = pnext, pnext = pos->next)
1700
1701 static void free_blk_move_list(void)
1702 {
1703         struct list_head *entry, *tmp;
1704         struct blk_move *bmv;
1705
1706         list_for_each_safe(entry, tmp, &blk_move_list) {
1707                 bmv = list_entry(entry, struct blk_move, list);
1708                 list_del(entry);
1709                 ext2fs_free_mem(&bmv);
1710         }
1711         return;
1712 }
1713
1714 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1715 {
1716         errcode_t retval;
1717         int new_ino_blks_per_grp;
1718         ext2fs_block_bitmap bmap;
1719
1720         retval = ext2fs_read_inode_bitmap(fs);
1721         if (retval) {
1722                 fputs(_("Failed to read inode bitmap\n"), stderr);
1723                 return retval;
1724         }
1725         retval = ext2fs_read_block_bitmap(fs);
1726         if (retval) {
1727                 fputs(_("Failed to read block bitmap\n"), stderr);
1728                 return retval;
1729         }
1730         INIT_LIST_HEAD(&blk_move_list);
1731
1732
1733         new_ino_blks_per_grp = ext2fs_div_ceil(
1734                                         EXT2_INODES_PER_GROUP(fs->super)*
1735                                         new_size,
1736                                         fs->blocksize);
1737
1738         /* We may change the file system.
1739          * Mark the file system as invalid so that
1740          * the user is prompted to run fsck.
1741          */
1742         fs->super->s_state &= ~EXT2_VALID_FS;
1743
1744         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1745                                                 &bmap);
1746         if (retval) {
1747                 fputs(_("Failed to allocate block bitmap when "
1748                                 "increasing inode size\n"), stderr);
1749                 return retval;
1750         }
1751         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1752         if (retval) {
1753                 fputs(_("Not enough space to increase inode size \n"), stderr);
1754                 goto err_out;
1755         }
1756         retval = move_block(fs, bmap);
1757         if (retval) {
1758                 fputs(_("Failed to relocate blocks during inode resize \n"),
1759                       stderr);
1760                 goto err_out;
1761         }
1762         retval = inode_scan_and_fix(fs, bmap);
1763         if (retval)
1764                 goto err_out_undo;
1765
1766         retval = group_desc_scan_and_fix(fs, bmap);
1767         if (retval)
1768                 goto err_out_undo;
1769
1770         retval = expand_inode_table(fs, new_size);
1771         if (retval)
1772                 goto err_out_undo;
1773
1774         ext2fs_calculate_summary_stats(fs);
1775
1776         fs->super->s_state |= EXT2_VALID_FS;
1777         /* mark super block and block bitmap as dirty */
1778         ext2fs_mark_super_dirty(fs);
1779         ext2fs_mark_bb_dirty(fs);
1780
1781 err_out:
1782         free_blk_move_list();
1783         ext2fs_free_block_bitmap(bmap);
1784
1785         return retval;
1786
1787 err_out_undo:
1788         free_blk_move_list();
1789         ext2fs_free_block_bitmap(bmap);
1790         fputs(_("Error in resizing the inode size.\n"
1791                         "Run e2undo to undo the "
1792                         "file system changes. \n"), stderr);
1793
1794         return retval;
1795 }
1796
1797 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1798 {
1799         errcode_t retval = 0;
1800         const char *tdb_dir;
1801         char *tdb_file;
1802         char *dev_name, *tmp_name;
1803
1804 #if 0 /* FIXME!! */
1805         /*
1806          * Configuration via a conf file would be
1807          * nice
1808          */
1809         profile_get_string(profile, "scratch_files",
1810                                         "directory", 0, 0,
1811                                         &tdb_dir);
1812 #endif
1813         tmp_name = strdup(name);
1814         if (!tmp_name) {
1815         alloc_fn_fail:
1816                 com_err(program_name, ENOMEM,
1817                         _("Couldn't allocate memory for tdb filename\n"));
1818                 return ENOMEM;
1819         }
1820         dev_name = basename(tmp_name);
1821
1822         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1823         if (!tdb_dir)
1824                 tdb_dir = "/var/lib/e2fsprogs";
1825
1826         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1827             access(tdb_dir, W_OK))
1828                 return 0;
1829
1830         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1831         if (!tdb_file)
1832                 goto alloc_fn_fail;
1833         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1834
1835         if (!access(tdb_file, F_OK)) {
1836                 if (unlink(tdb_file) < 0) {
1837                         retval = errno;
1838                         com_err(program_name, retval,
1839                                 _("while trying to delete %s"),
1840                                 tdb_file);
1841                         free(tdb_file);
1842                         return retval;
1843                 }
1844         }
1845
1846         set_undo_io_backing_manager(*io_ptr);
1847         *io_ptr = undo_io_manager;
1848         set_undo_io_backup_file(tdb_file);
1849         printf(_("To undo the tune2fs operation please run "
1850                  "the command\n    e2undo %s %s\n\n"),
1851                  tdb_file, name);
1852         free(tdb_file);
1853         free(tmp_name);
1854         return retval;
1855 }
1856
1857 int main(int argc, char **argv)
1858 {
1859         errcode_t retval;
1860         ext2_filsys fs;
1861         struct ext2_super_block *sb;
1862         io_manager io_ptr, io_ptr_orig = NULL;
1863         int rc = 0;
1864
1865 #ifdef ENABLE_NLS
1866         setlocale(LC_MESSAGES, "");
1867         setlocale(LC_CTYPE, "");
1868         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1869         textdomain(NLS_CAT_NAME);
1870         set_com_err_gettext(gettext);
1871 #endif
1872         if (argc && *argv)
1873                 program_name = *argv;
1874         add_error_table(&et_ext2_error_table);
1875
1876 #ifdef CONFIG_BUILD_FINDFS
1877         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1878                 do_findfs(argc, argv);
1879 #endif
1880         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1881                 parse_e2label_options(argc, argv);
1882         else
1883                 parse_tune2fs_options(argc, argv);
1884
1885 #ifdef CONFIG_TESTIO_DEBUG
1886         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1887                 io_ptr = test_io_manager;
1888                 test_io_backing_manager = unix_io_manager;
1889         } else
1890 #endif
1891                 io_ptr = unix_io_manager;
1892
1893 retry_open:
1894         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
1895                 open_flag |= EXT2_FLAG_SKIP_MMP;
1896
1897         open_flag |= EXT2_FLAG_64BITS;
1898
1899         /* keep the filesystem struct around to dump MMP data */
1900         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
1901
1902         retval = ext2fs_open2(device_name, io_options, open_flag,
1903                               0, 0, io_ptr, &fs);
1904         if (retval) {
1905                 com_err(program_name, retval,
1906                         _("while trying to open %s"),
1907                         device_name);
1908                 if (retval == EXT2_ET_MMP_FSCK_ON ||
1909                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
1910                         dump_mmp_msg(fs->mmp_buf,
1911                                      _("If you are sure the filesystem "
1912                                        "is not in use on any node, run:\n"
1913                                        "'tune2fs -f -E clear_mmp {device}'\n"));
1914                 else if (retval == EXT2_ET_MMP_FAILED)
1915                         dump_mmp_msg(fs->mmp_buf, NULL);
1916                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
1917                         fprintf(stderr,
1918                                 _("MMP block magic is bad. Try to fix it by "
1919                                   "running:\n'e2fsck -f %s'\n"), device_name);
1920                 else if (retval != EXT2_ET_MMP_FAILED)
1921                         fprintf(stderr,
1922                              _("Couldn't find valid filesystem superblock.\n"));
1923
1924                 ext2fs_free(fs);
1925                 exit(1);
1926         }
1927         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
1928
1929         if (I_flag && !io_ptr_orig) {
1930                 /*
1931                  * Check the inode size is right so we can issue an
1932                  * error message and bail before setting up the tdb
1933                  * file.
1934                  */
1935                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1936                         fprintf(stderr, _("The inode size is already %lu\n"),
1937                                 new_inode_size);
1938                         rc = 1;
1939                         goto closefs;
1940                 }
1941                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1942                         fprintf(stderr, _("Shrinking the inode size is "
1943                                           "not supported\n"));
1944                         rc = 1;
1945                         goto closefs;
1946                 }
1947
1948                 /*
1949                  * If inode resize is requested use the
1950                  * Undo I/O manager
1951                  */
1952                 io_ptr_orig = io_ptr;
1953                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1954                 if (retval) {
1955                         rc = 1;
1956                         goto closefs;
1957                 }
1958                 if (io_ptr != io_ptr_orig) {
1959                         ext2fs_close(fs);
1960                         goto retry_open;
1961                 }
1962         }
1963
1964         sb = fs->super;
1965         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1966
1967         if (print_label) {
1968                 /* For e2label emulation */
1969                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1970                        sb->s_volume_name);
1971                 remove_error_table(&et_ext2_error_table);
1972                 goto closefs;
1973         }
1974
1975         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1976         if (retval) {
1977                 com_err("ext2fs_check_if_mount", retval,
1978                         _("while determining whether %s is mounted."),
1979                         device_name);
1980                 rc = 1;
1981                 goto closefs;
1982         }
1983         /* Normally we only need to write out the superblock */
1984         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1985
1986         if (c_flag) {
1987                 sb->s_max_mnt_count = max_mount_count;
1988                 ext2fs_mark_super_dirty(fs);
1989                 printf(_("Setting maximal mount count to %d\n"),
1990                        max_mount_count);
1991         }
1992         if (C_flag) {
1993                 sb->s_mnt_count = mount_count;
1994                 ext2fs_mark_super_dirty(fs);
1995                 printf(_("Setting current mount count to %d\n"), mount_count);
1996         }
1997         if (e_flag) {
1998                 sb->s_errors = errors;
1999                 ext2fs_mark_super_dirty(fs);
2000                 printf(_("Setting error behavior to %d\n"), errors);
2001         }
2002         if (g_flag) {
2003                 sb->s_def_resgid = resgid;
2004                 ext2fs_mark_super_dirty(fs);
2005                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2006         }
2007         if (i_flag) {
2008                 if (interval >= (1ULL << 32)) {
2009                         com_err(program_name, 0,
2010                                 _("interval between checks is too big (%lu)"),
2011                                 interval);
2012                         rc = 1;
2013                         goto closefs;
2014                 }
2015                 sb->s_checkinterval = interval;
2016                 ext2fs_mark_super_dirty(fs);
2017                 printf(_("Setting interval between checks to %lu seconds\n"),
2018                        interval);
2019         }
2020         if (m_flag) {
2021                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2022                                           ext2fs_blocks_count(sb) / 100.0);
2023                 ext2fs_mark_super_dirty(fs);
2024                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2025                         reserved_ratio, ext2fs_r_blocks_count(sb));
2026         }
2027         if (r_flag) {
2028                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2029                         com_err(program_name, 0,
2030                                 _("reserved blocks count is too big (%llu)"),
2031                                 reserved_blocks);
2032                         rc = 1;
2033                         goto closefs;
2034                 }
2035                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2036                 ext2fs_mark_super_dirty(fs);
2037                 printf(_("Setting reserved blocks count to %llu\n"),
2038                        reserved_blocks);
2039         }
2040         if (s_flag == 1) {
2041                 if (sb->s_feature_ro_compat &
2042                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
2043                         fputs(_("\nThe filesystem already has sparse "
2044                                 "superblocks.\n"), stderr);
2045                 else {
2046                         sb->s_feature_ro_compat |=
2047                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2048                         sb->s_state &= ~EXT2_VALID_FS;
2049                         ext2fs_mark_super_dirty(fs);
2050                         printf(_("\nSparse superblock flag set.  %s"),
2051                                _(please_fsck));
2052                 }
2053         }
2054         if (s_flag == 0) {
2055                 fputs(_("\nClearing the sparse superflag not supported.\n"),
2056                       stderr);
2057                 rc = 1;
2058                 goto closefs;
2059         }
2060         if (T_flag) {
2061                 sb->s_lastcheck = last_check_time;
2062                 ext2fs_mark_super_dirty(fs);
2063                 printf(_("Setting time filesystem last checked to %s\n"),
2064                        ctime(&last_check_time));
2065         }
2066         if (u_flag) {
2067                 sb->s_def_resuid = resuid;
2068                 ext2fs_mark_super_dirty(fs);
2069                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2070         }
2071         if (L_flag) {
2072                 if (strlen(new_label) > sizeof(sb->s_volume_name))
2073                         fputs(_("Warning: label too long, truncating.\n"),
2074                               stderr);
2075                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2076                 strncpy(sb->s_volume_name, new_label,
2077                         sizeof(sb->s_volume_name));
2078                 ext2fs_mark_super_dirty(fs);
2079         }
2080         if (M_flag) {
2081                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2082                 strncpy(sb->s_last_mounted, new_last_mounted,
2083                         sizeof(sb->s_last_mounted));
2084                 ext2fs_mark_super_dirty(fs);
2085         }
2086         if (mntopts_cmd) {
2087                 rc = update_mntopts(fs, mntopts_cmd);
2088                 if (rc)
2089                         goto closefs;
2090         }
2091         if (features_cmd) {
2092                 rc = update_feature_set(fs, features_cmd);
2093                 if (rc)
2094                         goto closefs;
2095         }
2096         if (extended_cmd) {
2097                 rc = parse_extended_opts(fs, extended_cmd);
2098                 if (rc)
2099                         goto closefs;
2100                 if (clear_mmp && !f_flag) {
2101                         fputs(_("Error in using clear_mmp. "
2102                                 "It must be used with -f\n"),
2103                               stderr);
2104                         goto closefs;
2105                 }
2106         }
2107         if (clear_mmp) {
2108                 rc = ext2fs_mmp_clear(fs);
2109                 goto closefs;
2110         }
2111         if (journal_size || journal_device) {
2112                 rc = add_journal(fs);
2113                 if (rc)
2114                         goto closefs;
2115         }
2116
2117         if (Q_flag) {
2118                 if (mount_flags & EXT2_MF_MOUNTED) {
2119                         fputs(_("The quota feature may only be changed when "
2120                                 "the filesystem is unmounted.\n"), stderr);
2121                         rc = 1;
2122                         goto closefs;
2123                 }
2124                 handle_quota_options(fs);
2125         }
2126
2127         if (U_flag) {
2128                 int set_csum = 0;
2129                 dgrp_t i;
2130
2131                 if (sb->s_feature_ro_compat &
2132                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2133                         /*
2134                          * Determine if the block group checksums are
2135                          * correct so we know whether or not to set
2136                          * them later on.
2137                          */
2138                         for (i = 0; i < fs->group_desc_count; i++)
2139                                 if (!ext2fs_group_desc_csum_verify(fs, i))
2140                                         break;
2141                         if (i >= fs->group_desc_count)
2142                                 set_csum = 1;
2143                 }
2144                 if ((strcasecmp(new_UUID, "null") == 0) ||
2145                     (strcasecmp(new_UUID, "clear") == 0)) {
2146                         uuid_clear(sb->s_uuid);
2147                 } else if (strcasecmp(new_UUID, "time") == 0) {
2148                         uuid_generate_time(sb->s_uuid);
2149                 } else if (strcasecmp(new_UUID, "random") == 0) {
2150                         uuid_generate(sb->s_uuid);
2151                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2152                         com_err(program_name, 0, _("Invalid UUID format\n"));
2153                         rc = 1;
2154                         goto closefs;
2155                 }
2156                 if (set_csum) {
2157                         for (i = 0; i < fs->group_desc_count; i++)
2158                                 ext2fs_group_desc_csum_set(fs, i);
2159                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2160                 }
2161                 ext2fs_mark_super_dirty(fs);
2162         }
2163         if (I_flag) {
2164                 if (mount_flags & EXT2_MF_MOUNTED) {
2165                         fputs(_("The inode size may only be "
2166                                 "changed when the filesystem is "
2167                                 "unmounted.\n"), stderr);
2168                         rc = 1;
2169                         goto closefs;
2170                 }
2171                 if (fs->super->s_feature_incompat &
2172                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
2173                         fputs(_("Changing the inode size not supported for "
2174                                 "filesystems with the flex_bg\n"
2175                                 "feature enabled.\n"),
2176                               stderr);
2177                         rc = 1;
2178                         goto closefs;
2179                 }
2180                 /*
2181                  * We want to update group descriptor also
2182                  * with the new free inode count
2183                  */
2184                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
2185                 if (resize_inode(fs, new_inode_size) == 0) {
2186                         printf(_("Setting inode size %lu\n"),
2187                                                         new_inode_size);
2188                 } else {
2189                         printf(_("Failed to change inode size\n"));
2190                         rc = 1;
2191                         goto closefs;
2192                 }
2193         }
2194
2195         if (l_flag)
2196                 list_super(sb);
2197         if (stride_set) {
2198                 sb->s_raid_stride = stride;
2199                 ext2fs_mark_super_dirty(fs);
2200                 printf(_("Setting stride size to %d\n"), stride);
2201         }
2202         if (stripe_width_set) {
2203                 sb->s_raid_stripe_width = stripe_width;
2204                 ext2fs_mark_super_dirty(fs);
2205                 printf(_("Setting stripe width to %d\n"), stripe_width);
2206         }
2207         if (ext_mount_opts) {
2208                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
2209                         sizeof(fs->super->s_mount_opts));
2210                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
2211                 ext2fs_mark_super_dirty(fs);
2212                 printf(_("Setting extended default mount options to '%s'\n"),
2213                        ext_mount_opts);
2214                 free(ext_mount_opts);
2215         }
2216         free(device_name);
2217         remove_error_table(&et_ext2_error_table);
2218
2219 closefs:
2220         if (rc) {
2221                 ext2fs_mmp_stop(fs);
2222                 exit(1);
2223         }
2224
2225         return (ext2fs_close(fs) ? 1 : 0);
2226 }