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 500 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <time.h>
  43 #include <unistd.h>
  44 #include <sys/types.h>
  45 #include <libgen.h>
  46
  47 #include "ext2fs/ext2_fs.h"
  48 #include "ext2fs/ext2fs.h"
  49 #include "et/com_err.h"
  50 #include "uuid/uuid.h"
  51 #include "e2p/e2p.h"
  52 #include "jfs_user.h"
  53 #include "util.h"
  54 #include "blkid/blkid.h"
  55
  56 #include "../version.h"
  57 #include "nls-enable.h"
  58
  59 /*
  60  * Tune2fs supports these features in addition to the standard features.
  61  */
  62 #define EXT2_TUNE2FS_INCOMPAT   (EXT3_FEATURE_INCOMPAT_EXTENTS)
  63 #define EXT2_TUNE2FS_RO_COMPAT  (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
  64                                  EXT4_FEATURE_RO_COMPAT_GDT_CSUM|       \
  65                                  EXT4_FEATURE_RO_COMPAT_DIR_NLINK|      \
  66                                  EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
  67
  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, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  75 static int I_flag;
  76 static time_t last_check_time;
  77 static int print_label;
  78 static int max_mount_count, mount_count, mount_flags;
  79 static unsigned long interval, reserved_blocks;
  80 static double reserved_ratio;
  81 static unsigned long resgid, resuid;
  82 static unsigned short errors;
  83 static int open_flag;
  84 static char *features_cmd;
  85 static char *mntopts_cmd;
  86 static int stride, stripe_width;
  87 static int stride_set, stripe_width_set;
  88 static char *extended_cmd;
  89 static unsigned long int new_inode_size;
  90
  91 int journal_size, journal_flags;
  92 char *journal_device;
  93
  94 static struct list_head blk_move_list;
  95
  96 struct blk_move {
  97         struct list_head list;
  98         blk_t old_loc;
  99         blk_t new_loc;
 100 };
 101
 102
 103 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 104
 105 void do_findfs(int argc, char **argv);
 106
 107 static void usage(void)
 108 {
 109         fprintf(stderr,
 110                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 111                   "[-g group]\n"
 112                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 113                   "\t[-m reserved_blocks_percent] "
 114                   "[-o [^]mount_options[,...]] \n"
 115                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 116                   "[-L volume_label]\n"
 117                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 118                   "\t[-E extended-option[,...]] [-T last_check_time] "
 119                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 120         exit (1);
 121 }
 122
 123 static __u32 ok_features[3] = {
 124         /* Compat */
 125         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 126                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 127         /* Incompat */
 128         EXT2_FEATURE_INCOMPAT_FILETYPE |
 129                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 130                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 131         /* R/O compat */
 132         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 133                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 134                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 135 };
 136
 137 static __u32 clear_ok_features[3] = {
 138         /* Compat */
 139         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 140                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 141                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 142         /* Incompat */
 143         EXT2_FEATURE_INCOMPAT_FILETYPE |
 144                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 145         /* R/O compat */
 146         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 147                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 148 };
 149
 150 /*
 151  * Remove an external journal from the filesystem
 152  */
 153 static void remove_journal_device(ext2_filsys fs)
 154 {
 155         char            *journal_path;
 156         ext2_filsys     jfs;
 157         char            buf[1024];
 158         journal_superblock_t    *jsb;
 159         int             i, nr_users;
 160         errcode_t       retval;
 161         int             commit_remove_journal = 0;
 162         io_manager      io_ptr;
 163
 164         if (f_flag)
 165                 commit_remove_journal = 1; /* force removal even if error */
 166
 167         uuid_unparse(fs->super->s_journal_uuid, buf);
 168         journal_path = blkid_get_devname(NULL, "UUID", buf);
 169
 170         if (!journal_path) {
 171                 journal_path =
 172                         ext2fs_find_block_device(fs->super->s_journal_dev);
 173                 if (!journal_path)
 174                         return;
 175         }
 176
 177 #ifdef CONFIG_TESTIO_DEBUG
 178         io_ptr = test_io_manager;
 179         test_io_backing_manager = unix_io_manager;
 180 #else
 181         io_ptr = unix_io_manager;
 182 #endif
 183         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 184                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 185                              fs->blocksize, io_ptr, &jfs);
 186         if (retval) {
 187                 com_err(program_name, retval,
 188                         _("while trying to open external journal"));
 189                 goto no_valid_journal;
 190         }
 191         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 192                 fprintf(stderr, _("%s is not a journal device.\n"),
 193                         journal_path);
 194                 goto no_valid_journal;
 195         }
 196
 197         /* Get the journal superblock */
 198         if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
 199                 com_err(program_name, retval,
 200                         _("while reading journal superblock"));
 201                 goto no_valid_journal;
 202         }
 203
 204         jsb = (journal_superblock_t *) buf;
 205         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 206             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 207                 fputs(_("Journal superblock not found!\n"), stderr);
 208                 goto no_valid_journal;
 209         }
 210
 211         /* Find the filesystem UUID */
 212         nr_users = ntohl(jsb->s_nr_users);
 213         for (i=0; i < nr_users; i++) {
 214                 if (memcmp(fs->super->s_uuid,
 215                            &jsb->s_users[i*16], 16) == 0)
 216                         break;
 217         }
 218         if (i >= nr_users) {
 219                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 220                       stderr);
 221                 commit_remove_journal = 1;
 222                 goto no_valid_journal;
 223         }
 224         nr_users--;
 225         for (i=0; i < nr_users; i++)
 226                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 227         jsb->s_nr_users = htonl(nr_users);
 228
 229         /* Write back the journal superblock */
 230         if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
 231                 com_err(program_name, retval,
 232                         "while writing journal superblock.");
 233                 goto no_valid_journal;
 234         }
 235
 236         commit_remove_journal = 1;
 237
 238 no_valid_journal:
 239         if (commit_remove_journal == 0) {
 240                 fputs(_("Journal NOT removed\n"), stderr);
 241                 exit(1);
 242         }
 243         fs->super->s_journal_dev = 0;
 244         uuid_clear(fs->super->s_journal_uuid);
 245         ext2fs_mark_super_dirty(fs);
 246         fputs(_("Journal removed\n"), stdout);
 247         free(journal_path);
 248 }
 249
 250 /* Helper function for remove_journal_inode */
 251 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 252                                int blockcnt EXT2FS_ATTR((unused)),
 253                                void *private EXT2FS_ATTR((unused)))
 254 {
 255         blk_t   block;
 256         int     group;
 257
 258         block = *blocknr;
 259         ext2fs_unmark_block_bitmap(fs->block_map,block);
 260         group = ext2fs_group_of_blk(fs, block);
 261         fs->group_desc[group].bg_free_blocks_count++;
 262         ext2fs_group_desc_csum_set(fs, group);
 263         fs->super->s_free_blocks_count++;
 264         return 0;
 265 }
 266
 267 /*
 268  * Remove the journal inode from the filesystem
 269  */
 270 static void remove_journal_inode(ext2_filsys fs)
 271 {
 272         struct ext2_inode       inode;
 273         errcode_t               retval;
 274         ino_t                   ino = fs->super->s_journal_inum;
 275
 276         retval = ext2fs_read_inode(fs, ino,  &inode);
 277         if (retval) {
 278                 com_err(program_name, retval,
 279                         _("while reading journal inode"));
 280                 exit(1);
 281         }
 282         if (ino == EXT2_JOURNAL_INO) {
 283                 retval = ext2fs_read_bitmaps(fs);
 284                 if (retval) {
 285                         com_err(program_name, retval,
 286                                 _("while reading bitmaps"));
 287                         exit(1);
 288                 }
 289                 retval = ext2fs_block_iterate(fs, ino,
 290                                               BLOCK_FLAG_READ_ONLY, NULL,
 291                                               release_blocks_proc, NULL);
 292                 if (retval) {
 293                         com_err(program_name, retval,
 294                                 _("while clearing journal inode"));
 295                         exit(1);
 296                 }
 297                 memset(&inode, 0, sizeof(inode));
 298                 ext2fs_mark_bb_dirty(fs);
 299                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 300         } else
 301                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 302         retval = ext2fs_write_inode(fs, ino, &inode);
 303         if (retval) {
 304                 com_err(program_name, retval,
 305                         _("while writing journal inode"));
 306                 exit(1);
 307         }
 308         fs->super->s_journal_inum = 0;
 309         ext2fs_mark_super_dirty(fs);
 310 }
 311
 312 /*
 313  * Update the default mount options
 314  */
 315 static void update_mntopts(ext2_filsys fs, char *mntopts)
 316 {
 317         struct ext2_super_block *sb= fs->super;
 318
 319         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 320                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 321                         mntopts);
 322                 exit(1);
 323         }
 324         ext2fs_mark_super_dirty(fs);
 325 }
 326
 327 /*
 328  * Update the feature set as provided by the user.
 329  */
 330 static void update_feature_set(ext2_filsys fs, char *features)
 331 {
 332         struct ext2_super_block *sb= fs->super;
 333         __u32           old_features[3];
 334         int             type_err;
 335         unsigned int    mask_err;
 336
 337 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 338                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 339 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 340                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 341 #define FEATURE_CHANGED(type, mask) ((mask) & \
 342                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 343
 344         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 345         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 346         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 347
 348         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 349                               ok_features, clear_ok_features,
 350                               &type_err, &mask_err)) {
 351                 if (!mask_err)
 352                         fprintf(stderr,
 353                                 _("Invalid filesystem option set: %s\n"),
 354                                 features);
 355                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 356                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 357                                           "not supported.\n"),
 358                                 e2p_feature2string(type_err &
 359                                                    E2P_FEATURE_TYPE_MASK,
 360                                                    mask_err));
 361                 else
 362                         fprintf(stderr, _("Setting filesystem feature '%s' "
 363                                           "not supported.\n"),
 364                                 e2p_feature2string(type_err, mask_err));
 365                 exit(1);
 366         }
 367
 368         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 369                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 370                     !(mount_flags & EXT2_MF_READONLY)) {
 371                         fputs(_("The has_journal flag may only be "
 372                                 "cleared when the filesystem is\n"
 373                                 "unmounted or mounted "
 374                                 "read-only.\n"), stderr);
 375                         exit(1);
 376                 }
 377                 if (sb->s_feature_incompat &
 378                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 379                         fputs(_("The needs_recovery flag is set.  "
 380                                 "Please run e2fsck before clearing\n"
 381                                 "the has_journal flag.\n"), stderr);
 382                         exit(1);
 383                 }
 384                 if (sb->s_journal_inum) {
 385                         remove_journal_inode(fs);
 386                 }
 387                 if (sb->s_journal_dev) {
 388                         remove_journal_device(fs);
 389                 }
 390         }
 391
 392         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 393                 /*
 394                  * If adding a journal flag, let the create journal
 395                  * code below handle creating setting the flag and
 396                  * creating the journal.  We supply a default size if
 397                  * necessary.
 398                  */
 399                 if (!journal_size)
 400                         journal_size = -1;
 401                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 402         }
 403
 404         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 405                 if (!sb->s_def_hash_version)
 406                         sb->s_def_hash_version = EXT2_HASH_TEA;
 407                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 408                         uuid_generate((unsigned char *) sb->s_hash_seed);
 409         }
 410
 411         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 412                 if (ext2fs_check_desc(fs)) {
 413                         fputs(_("Clearing the flex_bg flag would "
 414                                 "cause the the filesystem to be\n"
 415                                 "inconsistent.\n"), stderr);
 416                         exit(1);
 417                 }
 418         }
 419
 420         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 421             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 422              sb->s_feature_incompat))
 423                 ext2fs_update_dynamic_rev(fs);
 424
 425         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 426                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 427             FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 428                             EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
 429             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 430                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 431             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 432                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 433             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 434                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
 435                 sb->s_state &= ~EXT2_VALID_FS;
 436                 printf("\n%s\n", _(please_fsck));
 437         }
 438
 439         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 440             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 441             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 442                 ext2fs_mark_super_dirty(fs);
 443 }
 444
 445 /*
 446  * Add a journal to the filesystem.
 447  */
 448 static void add_journal(ext2_filsys fs)
 449 {
 450         unsigned long journal_blocks;
 451         errcode_t       retval;
 452         ext2_filsys     jfs;
 453         io_manager      io_ptr;
 454
 455         if (fs->super->s_feature_compat &
 456             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 457                 fputs(_("The filesystem already has a journal.\n"), stderr);
 458                 goto err;
 459         }
 460         if (journal_device) {
 461                 check_plausibility(journal_device);
 462                 check_mount(journal_device, 0, _("journal"));
 463 #ifdef CONFIG_TESTIO_DEBUG
 464                 io_ptr = test_io_manager;
 465                 test_io_backing_manager = unix_io_manager;
 466 #else
 467                 io_ptr = unix_io_manager;
 468 #endif
 469                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 470                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 471                                      fs->blocksize, io_ptr, &jfs);
 472                 if (retval) {
 473                         com_err(program_name, retval,
 474                                 _("\n\twhile trying to open journal on %s\n"),
 475                                 journal_device);
 476                         goto err;
 477                 }
 478                 printf(_("Creating journal on device %s: "),
 479                        journal_device);
 480                 fflush(stdout);
 481
 482                 retval = ext2fs_add_journal_device(fs, jfs);
 483                 ext2fs_close(jfs);
 484                 if (retval) {
 485                         com_err (program_name, retval,
 486                                  _("while adding filesystem to journal on %s"),
 487                                  journal_device);
 488                         goto err;
 489                 }
 490                 fputs(_("done\n"), stdout);
 491         } else if (journal_size) {
 492                 fputs(_("Creating journal inode: "), stdout);
 493                 fflush(stdout);
 494                 journal_blocks = figure_journal_size(journal_size, fs);
 495
 496                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 497                                                   journal_flags);
 498                 if (retval) {
 499                         fprintf(stderr, "\n");
 500                         com_err(program_name, retval,
 501                                 _("\n\twhile trying to create journal file"));
 502                         exit(1);
 503                 } else
 504                         fputs(_("done\n"), stdout);
 505                 /*
 506                  * If the filesystem wasn't mounted, we need to force
 507                  * the block group descriptors out.
 508                  */
 509                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 510                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 511         }
 512         print_check_message(fs);
 513         return;
 514
 515 err:
 516         if (journal_device)
 517                 free(journal_device);
 518         exit(1);
 519 }
 520
 521
 522 static void parse_e2label_options(int argc, char ** argv)
 523 {
 524         if ((argc < 2) || (argc > 3)) {
 525                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 526                 exit(1);
 527         }
 528         io_options = strchr(argv[1], '?');
 529         if (io_options)
 530                 *io_options++ = 0;
 531         device_name = blkid_get_devname(NULL, argv[1], NULL);
 532         if (!device_name) {
 533                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 534                         argv[1]);
 535                 exit(1);
 536         }
 537         open_flag = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_JOURNAL_DEV_OK;
 538         if (argc == 3) {
 539                 open_flag |= EXT2_FLAG_RW;
 540                 L_flag = 1;
 541                 new_label = argv[2];
 542         } else
 543                 print_label++;
 544 }
 545
 546 static time_t parse_time(char *str)
 547 {
 548         struct  tm      ts;
 549
 550         if (strcmp(str, "now") == 0) {
 551                 return (time(0));
 552         }
 553         memset(&ts, 0, sizeof(ts));
 554 #ifdef HAVE_STRPTIME
 555         strptime(str, "%Y%m%d%H%M%S", &ts);
 556 #else
 557         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 558                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 559         ts.tm_year -= 1900;
 560         ts.tm_mon -= 1;
 561         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 562             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 563             ts.tm_min > 59 || ts.tm_sec > 61)
 564                 ts.tm_mday = 0;
 565 #endif
 566         if (ts.tm_mday == 0) {
 567                 com_err(program_name, 0,
 568                         _("Couldn't parse date/time specifier: %s"),
 569                         str);
 570                 usage();
 571         }
 572         ts.tm_isdst = -1;
 573         return (mktime(&ts));
 574 }
 575
 576 static void parse_tune2fs_options(int argc, char **argv)
 577 {
 578         int c;
 579         char * tmp;
 580         struct group * gr;
 581         struct passwd * pw;
 582
 583         open_flag = EXT2_FLAG_SOFTSUPP_FEATURES;
 584
 585         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 586         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
 587                 switch (c)
 588                 {
 589                         case 'c':
 590                                 max_mount_count = strtol (optarg, &tmp, 0);
 591                                 if (*tmp || max_mount_count > 16000) {
 592                                         com_err (program_name, 0,
 593                                                  _("bad mounts count - %s"),
 594                                                  optarg);
 595                                         usage();
 596                                 }
 597                                 if (max_mount_count == 0)
 598                                         max_mount_count = -1;
 599                                 c_flag = 1;
 600                                 open_flag = EXT2_FLAG_RW;
 601                                 break;
 602                         case 'C':
 603                                 mount_count = strtoul (optarg, &tmp, 0);
 604                                 if (*tmp || mount_count > 16000) {
 605                                         com_err (program_name, 0,
 606                                                  _("bad mounts count - %s"),
 607                                                  optarg);
 608                                         usage();
 609                                 }
 610                                 C_flag = 1;
 611                                 open_flag = EXT2_FLAG_RW;
 612                                 break;
 613                         case 'e':
 614                                 if (strcmp (optarg, "continue") == 0)
 615                                         errors = EXT2_ERRORS_CONTINUE;
 616                                 else if (strcmp (optarg, "remount-ro") == 0)
 617                                         errors = EXT2_ERRORS_RO;
 618                                 else if (strcmp (optarg, "panic") == 0)
 619                                         errors = EXT2_ERRORS_PANIC;
 620                                 else {
 621                                         com_err (program_name, 0,
 622                                                  _("bad error behavior - %s"),
 623                                                  optarg);
 624                                         usage();
 625                                 }
 626                                 e_flag = 1;
 627                                 open_flag = EXT2_FLAG_RW;
 628                                 break;
 629                         case 'E':
 630                                 extended_cmd = optarg;
 631                                 open_flag |= EXT2_FLAG_RW;
 632                                 break;
 633                         case 'f': /* Force */
 634                                 f_flag = 1;
 635                                 break;
 636                         case 'g':
 637                                 resgid = strtoul (optarg, &tmp, 0);
 638                                 if (*tmp) {
 639                                         gr = getgrnam (optarg);
 640                                         if (gr == NULL)
 641                                                 tmp = optarg;
 642                                         else {
 643                                                 resgid = gr->gr_gid;
 644                                                 *tmp =0;
 645                                         }
 646                                 }
 647                                 if (*tmp) {
 648                                         com_err (program_name, 0,
 649                                                  _("bad gid/group name - %s"),
 650                                                  optarg);
 651                                         usage();
 652                                 }
 653                                 g_flag = 1;
 654                                 open_flag = EXT2_FLAG_RW;
 655                                 break;
 656                         case 'i':
 657                                 interval = strtoul (optarg, &tmp, 0);
 658                                 switch (*tmp) {
 659                                 case 's':
 660                                         tmp++;
 661                                         break;
 662                                 case '\0':
 663                                 case 'd':
 664                                 case 'D': /* days */
 665                                         interval *= 86400;
 666                                         if (*tmp != '\0')
 667                                                 tmp++;
 668                                         break;
 669                                 case 'm':
 670                                 case 'M': /* months! */
 671                                         interval *= 86400 * 30;
 672                                         tmp++;
 673                                         break;
 674                                 case 'w':
 675                                 case 'W': /* weeks */
 676                                         interval *= 86400 * 7;
 677                                         tmp++;
 678                                         break;
 679                                 }
 680                                 if (*tmp) {
 681                                         com_err (program_name, 0,
 682                                                 _("bad interval - %s"), optarg);
 683                                         usage();
 684                                 }
 685                                 i_flag = 1;
 686                                 open_flag = EXT2_FLAG_RW;
 687                                 break;
 688                         case 'j':
 689                                 if (!journal_size)
 690                                         journal_size = -1;
 691                                 open_flag = EXT2_FLAG_RW;
 692                                 break;
 693                         case 'J':
 694                                 parse_journal_opts(optarg);
 695                                 open_flag = EXT2_FLAG_RW;
 696                                 break;
 697                         case 'l':
 698                                 l_flag = 1;
 699                                 break;
 700                         case 'L':
 701                                 new_label = optarg;
 702                                 L_flag = 1;
 703                                 open_flag |= EXT2_FLAG_RW |
 704                                         EXT2_FLAG_JOURNAL_DEV_OK;
 705                                 break;
 706                         case 'm':
 707                                 reserved_ratio = strtod(optarg, &tmp);
 708                                 if (*tmp || reserved_ratio > 50) {
 709                                         com_err (program_name, 0,
 710                                                  _("bad reserved block ratio - %s"),
 711                                                  optarg);
 712                                         usage();
 713                                 }
 714                                 m_flag = 1;
 715                                 open_flag = EXT2_FLAG_RW;
 716                                 break;
 717                         case 'M':
 718                                 new_last_mounted = optarg;
 719                                 M_flag = 1;
 720                                 open_flag = EXT2_FLAG_RW;
 721                                 break;
 722                         case 'o':
 723                                 if (mntopts_cmd) {
 724                                         com_err (program_name, 0,
 725                                          _("-o may only be specified once"));
 726                                         usage();
 727                                 }
 728                                 mntopts_cmd = optarg;
 729                                 open_flag = EXT2_FLAG_RW;
 730                                 break;
 731
 732                         case 'O':
 733                                 if (features_cmd) {
 734                                         com_err (program_name, 0,
 735                                          _("-O may only be specified once"));
 736                                         usage();
 737                                 }
 738                                 features_cmd = optarg;
 739                                 open_flag = EXT2_FLAG_RW;
 740                                 break;
 741                         case 'r':
 742                                 reserved_blocks = strtoul (optarg, &tmp, 0);
 743                                 if (*tmp) {
 744                                         com_err (program_name, 0,
 745                                                  _("bad reserved blocks count - %s"),
 746                                                  optarg);
 747                                         usage();
 748                                 }
 749                                 r_flag = 1;
 750                                 open_flag = EXT2_FLAG_RW;
 751                                 break;
 752                         case 's': /* Deprecated */
 753                                 s_flag = atoi(optarg);
 754                                 open_flag = EXT2_FLAG_RW;
 755                                 break;
 756                         case 'T':
 757                                 T_flag = 1;
 758                                 last_check_time = parse_time(optarg);
 759                                 open_flag = EXT2_FLAG_RW;
 760                                 break;
 761                         case 'u':
 762                                 resuid = strtoul (optarg, &tmp, 0);
 763                                 if (*tmp) {
 764                                         pw = getpwnam (optarg);
 765                                         if (pw == NULL)
 766                                                 tmp = optarg;
 767                                         else {
 768                                                 resuid = pw->pw_uid;
 769                                                 *tmp = 0;
 770                                         }
 771                                 }
 772                                 if (*tmp) {
 773                                         com_err (program_name, 0,
 774                                                  _("bad uid/user name - %s"),
 775                                                  optarg);
 776                                         usage();
 777                                 }
 778                                 u_flag = 1;
 779                                 open_flag = EXT2_FLAG_RW;
 780                                 break;
 781                         case 'U':
 782                                 new_UUID = optarg;
 783                                 U_flag = 1;
 784                                 open_flag = EXT2_FLAG_RW |
 785                                         EXT2_FLAG_JOURNAL_DEV_OK;
 786                                 break;
 787                         case 'I':
 788                                 new_inode_size = strtoul (optarg, &tmp, 0);
 789                                 if (*tmp) {
 790                                         com_err (program_name, 0,
 791                                                 _("bad inode size - %s"),
 792                                                         optarg);
 793                                         usage();
 794                                 }
 795                                 if (!((new_inode_size &
 796                                                 (new_inode_size - 1)) == 0)) {
 797                                         com_err (program_name, 0,
 798                                                 _("Inode size must be a "
 799                                                 "power of two- %s"),
 800                                                         optarg);
 801                                         usage();
 802                                 }
 803                                 open_flag = EXT2_FLAG_RW;
 804                                 I_flag = 1;
 805                                 break;
 806                         default:
 807                                 usage();
 808                 }
 809         if (optind < argc - 1 || optind == argc)
 810                 usage();
 811         if (!open_flag && !l_flag)
 812                 usage();
 813         io_options = strchr(argv[optind], '?');
 814         if (io_options)
 815                 *io_options++ = 0;
 816         device_name = blkid_get_devname(NULL, argv[optind], NULL);
 817         if (!device_name) {
 818                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
 819                         argv[optind]);
 820                 exit(1);
 821         }
 822 }
 823
 824 void do_findfs(int argc, char **argv)
 825 {
 826         char    *dev;
 827
 828         if ((argc != 2) ||
 829             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
 830                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
 831                 exit(2);
 832         }
 833         dev = blkid_get_devname(NULL, argv[1], NULL);
 834         if (!dev) {
 835                 com_err("findfs", 0, _("Unable to resolve '%s'"),
 836                         argv[1]);
 837                 exit(1);
 838         }
 839         puts(dev);
 840         exit(0);
 841 }
 842
 843 /*
 844  * Note!  If any extended options are incompatible with the
 845  * intersection of the SOFTSUPP features and those features explicitly
 846  * enabled for tune2fs, there needs to be an explicit test for them
 847  * here.
 848  */
 849 static void parse_extended_opts(ext2_filsys fs, const char *opts)
 850 {
 851         char    *buf, *token, *next, *p, *arg;
 852         int     len;
 853         int     r_usage = 0;
 854
 855         len = strlen(opts);
 856         buf = malloc(len+1);
 857         if (!buf) {
 858                 fprintf(stderr,
 859                         _("Couldn't allocate memory to parse options!\n"));
 860                 exit(1);
 861         }
 862         strcpy(buf, opts);
 863         for (token = buf; token && *token; token = next) {
 864                 p = strchr(token, ',');
 865                 next = 0;
 866                 if (p) {
 867                         *p = 0;
 868                         next = p+1;
 869                 }
 870                 arg = strchr(token, '=');
 871                 if (arg) {
 872                         *arg = 0;
 873                         arg++;
 874                 }
 875                 if (!strcmp(token, "test_fs")) {
 876                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 877                         printf("Setting test filesystem flag\n");
 878                         ext2fs_mark_super_dirty(fs);
 879                 } else if (!strcmp(token, "^test_fs")) {
 880                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
 881                         printf("Clearing test filesystem flag\n");
 882                         ext2fs_mark_super_dirty(fs);
 883                 } else if (strcmp(token, "stride") == 0) {
 884                         if (!arg) {
 885                                 r_usage++;
 886                                 continue;
 887                         }
 888                         stride = strtoul(arg, &p, 0);
 889                         if (*p || (stride == 0)) {
 890                                 fprintf(stderr,
 891                                        _("Invalid RAID stride: %s\n"),
 892                                         arg);
 893                                 r_usage++;
 894                                 continue;
 895                         }
 896                         stride_set = 1;
 897                 } else if (strcmp(token, "stripe-width") == 0 ||
 898                            strcmp(token, "stripe_width") == 0) {
 899                         if (!arg) {
 900                                 r_usage++;
 901                                 continue;
 902                         }
 903                         stripe_width = strtoul(arg, &p, 0);
 904                         if (*p || (stripe_width == 0)) {
 905                                 fprintf(stderr,
 906                                         _("Invalid RAID stripe-width: %s\n"),
 907                                         arg);
 908                                 r_usage++;
 909                                 continue;
 910                         }
 911                         stripe_width_set = 1;
 912                 } else
 913                         r_usage++;
 914         }
 915         if (r_usage) {
 916                 fprintf(stderr, _("\nBad options specified.\n\n"
 917                         "Extended options are separated by commas, "
 918                         "and may take an argument which\n"
 919                         "\tis set off by an equals ('=') sign.\n\n"
 920                         "Valid extended options are:\n"
 921                         "\tstride=<RAID per-disk chunk size in blocks>\n"
 922                         "\tstripe-width=<RAID stride*data disks in blocks>\n"
 923                         "\ttest_fs\n"
 924                         "\t^test_fs\n"));
 925                 free(buf);
 926                 exit(1);
 927         }
 928         free(buf);
 929 }
 930
 931 static int get_move_bitmap(ext2_filsys fs, int new_ino_blks_per_grp,
 932                                         ext2fs_block_bitmap bmap)
 933 {
 934         dgrp_t i;
 935         blk_t j, needed_blocks = 0;
 936         blk_t start_blk, end_blk;
 937
 938         for (i = 0; i < fs->group_desc_count; i++) {
 939
 940                 start_blk = fs->group_desc[i].bg_inode_table +
 941                                         fs->inode_blocks_per_group;
 942
 943                 end_blk = fs->group_desc[i].bg_inode_table +
 944                                         new_ino_blks_per_grp;
 945
 946                 for (j = start_blk; j < end_blk; j++) {
 947
 948                         if (ext2fs_test_block_bitmap(fs->block_map, j)) {
 949                                 /* FIXME!!
 950                                  * What happens if the block is marked
 951                                  * as a bad block
 952                                  */
 953                                 ext2fs_mark_block_bitmap(bmap, j);
 954                                 needed_blocks++;
 955                         } else {
 956                                 /*
 957                                  * We are going to use this block for
 958                                  * inode table. So mark them used.
 959                                  */
 960                                 ext2fs_mark_block_bitmap(fs->block_map, j);
 961                         }
 962                 }
 963         }
 964
 965         if (needed_blocks > fs->super->s_free_blocks_count ) {
 966                 return ENOSPC;
 967         }
 968
 969         return 0;
 970 }
 971
 972 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
 973 {
 974         char *buf;
 975         errcode_t retval;
 976         blk_t blk, new_blk;
 977         struct blk_move *bmv;
 978
 979
 980         retval = ext2fs_get_mem(fs->blocksize, &buf);
 981         if (retval)
 982                 return retval;
 983
 984         for (blk = fs->super->s_first_data_block;
 985                         blk < fs->super->s_blocks_count; blk++) {
 986
 987                 if (!ext2fs_test_block_bitmap(bmap, blk))
 988                         continue;
 989
 990                 retval = ext2fs_new_block(fs, blk, NULL, &new_blk);
 991                 if (retval)
 992                         goto err_out;
 993
 994                 /* Mark this block as allocated */
 995                 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
 996
 997                 /* Add it to block move list */
 998                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
 999                 if (retval)
1000                         goto err_out;
1001
1002                 bmv->old_loc = blk;
1003                 bmv->new_loc = new_blk;
1004
1005                 list_add(&(bmv->list), &blk_move_list);
1006
1007                 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1008                 if (retval)
1009                         goto err_out;
1010
1011                 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1012                 if (retval)
1013                         goto err_out;
1014         }
1015
1016 err_out:
1017         ext2fs_free_mem(&buf);
1018         return retval;
1019 }
1020
1021 static blk_t transalate_block(blk_t blk)
1022 {
1023         struct list_head *entry;
1024         struct blk_move *bmv;
1025
1026         list_for_each(entry, &blk_move_list) {
1027
1028                 bmv = list_entry(entry, struct blk_move, list);
1029                 if (bmv->old_loc == blk)
1030                         return bmv->new_loc;
1031         }
1032
1033         return 0;
1034 }
1035
1036 static int process_block(ext2_filsys fs, blk_t  *block_nr,
1037                          e2_blkcnt_t blockcnt,
1038                          blk_t ref_block EXT2FS_ATTR((unused)),
1039                          int ref_offset EXT2FS_ATTR((unused)),
1040                          void *priv_data EXT2FS_ATTR((unused)))
1041 {
1042         int ret = 0;
1043         blk_t new_blk;
1044
1045
1046         new_blk = transalate_block(*block_nr);
1047         if (new_blk) {
1048                 *block_nr = new_blk;
1049                 /*
1050                  * This will force the ext2fs_write_inode in the iterator
1051                  */
1052                 ret |= BLOCK_CHANGED;
1053         }
1054
1055         return ret;
1056 }
1057
1058 static int inode_scan_and_fix(ext2_filsys fs)
1059 {
1060         errcode_t retval = 0;
1061         ext2_ino_t ino;
1062         blk_t blk;
1063         char *block_buf = 0;
1064         struct ext2_inode inode;
1065         ext2_inode_scan scan = NULL;
1066
1067         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1068         if (retval)
1069                 return retval;
1070
1071         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1072         if (retval)
1073                 goto err_out;
1074
1075         while (1) {
1076
1077                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1078                 if (retval)
1079                         goto err_out;
1080
1081                 if (!ino)
1082                         break;
1083
1084                 if (inode.i_links_count == 0)
1085                         continue; /* inode not in use */
1086
1087                 /* FIXME!!
1088                  * If we end up modifying the journal inode
1089                  * the sb->s_jnl_blocks will differ. But a
1090                  * subsequent e2fsck fixes that.
1091                  * Do we need to fix this ??
1092                  */
1093
1094                 if (inode.i_file_acl) {
1095
1096                         blk = transalate_block(inode.i_file_acl);
1097                         if (!blk)
1098                                 continue;
1099
1100                         inode.i_file_acl = blk;
1101
1102                         /*
1103                          * Write the inode to disk so that inode table
1104                          * resizing can work
1105                          */
1106                         retval = ext2fs_write_inode(fs, ino, &inode);
1107                         if (retval)
1108                                 goto err_out;
1109                 }
1110
1111                 if (!ext2fs_inode_has_valid_blocks(&inode))
1112                         continue;
1113
1114                 retval = ext2fs_block_iterate2(fs, ino, 0,
1115                                                 block_buf, process_block,
1116                                                 0);
1117                 if (retval)
1118                         goto err_out;
1119
1120         }
1121
1122 err_out:
1123         ext2fs_free_mem(&block_buf);
1124
1125         return retval;
1126
1127 }
1128
1129 static int expand_inode_table(ext2_filsys fs, unsigned long int new_inode_size)
1130 {
1131         dgrp_t i;
1132         blk_t blk;
1133         errcode_t retval;
1134         int new_ino_blks_per_grp, j;
1135         char *old_itable = NULL, *new_itable = NULL;
1136         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1137         unsigned long int old_inode_size;
1138         int old_itable_size, new_itable_size;
1139
1140         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1141         old_inode_size = EXT2_INODE_SIZE(fs->super);
1142
1143         new_ino_blks_per_grp = ext2fs_div_ceil(
1144                                         EXT2_INODES_PER_GROUP(fs->super) *
1145                                         new_inode_size,
1146                                         fs->blocksize);
1147
1148         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1149
1150         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1151         if (retval)
1152                 return retval;
1153
1154         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1155         if (retval)
1156                 goto err_out;
1157
1158         tmp_old_itable = old_itable;
1159         tmp_new_itable = new_itable;
1160
1161         for (i = 0; i < fs->group_desc_count; i++) {
1162
1163                 blk = fs->group_desc[i].bg_inode_table;
1164                 retval = io_channel_read_blk(fs->io, blk,
1165                                 fs->inode_blocks_per_group, old_itable);
1166                 if (retval)
1167                         goto err_out;
1168
1169                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1170
1171                         memcpy(new_itable, old_itable, old_inode_size);
1172
1173                         memset(new_itable+old_inode_size, 0,
1174                                         new_inode_size - old_inode_size);
1175
1176                         new_itable +=  new_inode_size;
1177                         old_itable += old_inode_size;
1178                 }
1179
1180                 /* reset the pointer */
1181                 old_itable = tmp_old_itable;
1182                 new_itable = tmp_new_itable;
1183
1184                 retval = io_channel_write_blk(fs->io, blk,
1185                                         new_ino_blks_per_grp, new_itable);
1186                 if (retval)
1187                         goto err_out;
1188         }
1189
1190         /* Update the meta data */
1191         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1192         fs->super->s_inode_size = new_inode_size;
1193
1194 err_out:
1195         if (old_itable)
1196                 ext2fs_free_mem(&old_itable);
1197
1198         if (new_itable)
1199                 ext2fs_free_mem(&new_itable);
1200
1201         return retval;
1202
1203 }
1204
1205 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1206 {
1207         blk_t           blk;
1208         ext2_ino_t      ino;
1209         unsigned int    group = 0;
1210         unsigned int    count = 0;
1211         int             total_free = 0;
1212         int             group_free = 0;
1213
1214         /*
1215          * First calculate the block statistics
1216          */
1217         for (blk = fs->super->s_first_data_block;
1218              blk < fs->super->s_blocks_count; blk++) {
1219                 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1220                         group_free++;
1221                         total_free++;
1222                 }
1223                 count++;
1224                 if ((count == fs->super->s_blocks_per_group) ||
1225                     (blk == fs->super->s_blocks_count-1)) {
1226                         fs->group_desc[group++].bg_free_blocks_count =
1227                                 group_free;
1228                         count = 0;
1229                         group_free = 0;
1230                 }
1231         }
1232         fs->super->s_free_blocks_count = total_free;
1233
1234         /*
1235          * Next, calculate the inode statistics
1236          */
1237         group_free = 0;
1238         total_free = 0;
1239         count = 0;
1240         group = 0;
1241
1242         /* Protect loop from wrap-around if s_inodes_count maxed */
1243         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1244                 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1245                         group_free++;
1246                         total_free++;
1247                 }
1248                 count++;
1249                 if ((count == fs->super->s_inodes_per_group) ||
1250                     (ino == fs->super->s_inodes_count)) {
1251                         fs->group_desc[group++].bg_free_inodes_count =
1252                                 group_free;
1253                         count = 0;
1254                         group_free = 0;
1255                 }
1256         }
1257         fs->super->s_free_inodes_count = total_free;
1258         ext2fs_mark_super_dirty(fs);
1259         return 0;
1260 }
1261
1262 #define list_for_each_safe(pos, pnext, head) \
1263         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1264              pos = pnext, pnext = pos->next)
1265
1266 static void free_blk_move_list()
1267 {
1268         struct list_head *entry, *tmp;
1269         struct blk_move *bmv;
1270
1271         list_for_each_safe(entry, tmp, &blk_move_list) {
1272
1273                 bmv = list_entry(entry, struct blk_move, list);
1274                 list_del(entry);
1275                 ext2fs_free_mem(&bmv);
1276         }
1277
1278         return ;
1279 }
1280 static int resize_inode(ext2_filsys fs, unsigned long int new_inode_size)
1281 {
1282         errcode_t retval;
1283         int new_ino_blks_per_grp;
1284         ext2fs_block_bitmap bmap;
1285
1286         if (new_inode_size <= EXT2_INODE_SIZE(fs->super)) {
1287                 fprintf(stderr, _("New inode size too small\n"));
1288                 return EXT2_ET_INVALID_ARGUMENT;
1289         }
1290
1291         ext2fs_read_inode_bitmap(fs);
1292         ext2fs_read_block_bitmap(fs);
1293         INIT_LIST_HEAD(&blk_move_list);
1294
1295
1296         new_ino_blks_per_grp = ext2fs_div_ceil(
1297                                         EXT2_INODES_PER_GROUP(fs->super)*
1298                                         new_inode_size,
1299                                         fs->blocksize);
1300
1301         /* We may change the file system.
1302          * Mark the file system as invalid so that
1303          * the user is prompted to run fsck.
1304          */
1305         fs->super->s_state &= ~EXT2_VALID_FS;
1306
1307         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1308                                                 &bmap);
1309         if (retval)
1310                 return retval;
1311
1312         retval = get_move_bitmap(fs, new_ino_blks_per_grp, bmap);
1313         if (retval)
1314                 goto err_out;
1315
1316         retval = move_block(fs, bmap);
1317         if (retval)
1318                 goto err_out;
1319
1320         retval = inode_scan_and_fix(fs);
1321         if (retval)
1322                 goto err_out;
1323
1324         retval = expand_inode_table(fs, new_inode_size);
1325         if (retval)
1326                 goto err_out;
1327
1328         ext2fs_calculate_summary_stats(fs);
1329
1330         fs->super->s_state |= EXT2_VALID_FS;
1331         /* mark super block and block bitmap as dirty */
1332         ext2fs_mark_super_dirty(fs);
1333         ext2fs_mark_bb_dirty(fs);
1334
1335 err_out:
1336         free_blk_move_list();
1337         ext2fs_free_block_bitmap(bmap);
1338
1339         return retval;
1340 }
1341
1342 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1343 {
1344         errcode_t retval = 0;
1345         char *tdb_dir, tdb_file[PATH_MAX];
1346         char *device_name, *tmp_name;
1347
1348 #if 0 /* FIXME!! */
1349         /*
1350          * Configuration via a conf file would be
1351          * nice
1352          */
1353         profile_get_string(profile, "scratch_files",
1354                                         "directory", 0, 0,
1355                                         &tdb_dir);
1356 #endif
1357         tmp_name = strdup(name);
1358         device_name = basename(tmp_name);
1359
1360         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1361         if (!tdb_dir)
1362                 tdb_dir="/var/lib/e2fsprogs";
1363
1364         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1365             access(tdb_dir, W_OK))
1366                 return 0;
1367
1368         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, device_name);
1369
1370         if (!access(tdb_file, F_OK)) {
1371                 if (unlink(tdb_file) < 0) {
1372                         retval = errno;
1373                         com_err(program_name, retval,
1374                                 _("while trying to delete %s"),
1375                                 tdb_file);
1376                         return retval;
1377                 }
1378         }
1379
1380         set_undo_io_backing_manager(*io_ptr);
1381         *io_ptr = undo_io_manager;
1382         set_undo_io_backup_file(tdb_file);
1383         printf(_("To undo the tune2fs operations please run "
1384                  "the command\n    undoe2fs %s %s\n\n"),
1385                  tdb_file, name);
1386 err_out:
1387         free(tmp_name);
1388         return retval;
1389 }
1390
1391 int main (int argc, char ** argv)
1392 {
1393         errcode_t retval;
1394         ext2_filsys fs;
1395         struct ext2_super_block *sb;
1396         io_manager io_ptr;
1397
1398 #ifdef ENABLE_NLS
1399         setlocale(LC_MESSAGES, "");
1400         setlocale(LC_CTYPE, "");
1401         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1402         textdomain(NLS_CAT_NAME);
1403 #endif
1404         if (argc && *argv)
1405                 program_name = *argv;
1406         add_error_table(&et_ext2_error_table);
1407
1408         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1409                 do_findfs(argc, argv);
1410         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1411                 parse_e2label_options(argc, argv);
1412         else
1413                 parse_tune2fs_options(argc, argv);
1414
1415 #ifdef CONFIG_TESTIO_DEBUG
1416         io_ptr = test_io_manager;
1417         test_io_backing_manager = unix_io_manager;
1418 #else
1419         io_ptr = unix_io_manager;
1420 #endif
1421
1422         if (I_flag) {
1423                 /*
1424                  * If inode resize is requested use the
1425                  * Undo I/O manager
1426                  */
1427                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1428                 if (retval)
1429                         exit(1);
1430         }
1431
1432         retval = ext2fs_open2(device_name, io_options, open_flag,
1433                               0, 0, io_ptr, &fs);
1434         if (retval) {
1435                 com_err (program_name, retval, _("while trying to open %s"),
1436                          device_name);
1437                 fprintf(stderr,
1438                         _("Couldn't find valid filesystem superblock.\n"));
1439                 exit(1);
1440         }
1441         sb = fs->super;
1442         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1443         if ((sb->s_feature_incompat & !EXT2_TUNE2FS_INCOMPAT) ||
1444             (sb->s_feature_ro_compat & !EXT2_TUNE2FS_RO_COMPAT)) {
1445                 fprintf(stderr,
1446                         _("Filesystem %s has unsupported features enabled.\n"),
1447                         device_name);
1448                 exit(1);
1449         }
1450         if (print_label) {
1451                 /* For e2label emulation */
1452                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1453                        sb->s_volume_name);
1454                 remove_error_table(&et_ext2_error_table);
1455                 exit(0);
1456         }
1457         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1458         if (retval) {
1459                 com_err("ext2fs_check_if_mount", retval,
1460                         _("while determining whether %s is mounted."),
1461                         device_name);
1462                 exit(1);
1463         }
1464         /* Normally we only need to write out the superblock */
1465         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1466
1467         if (c_flag) {
1468                 sb->s_max_mnt_count = max_mount_count;
1469                 ext2fs_mark_super_dirty(fs);
1470                 printf (_("Setting maximal mount count to %d\n"),
1471                         max_mount_count);
1472         }
1473         if (C_flag) {
1474                 sb->s_mnt_count = mount_count;
1475                 ext2fs_mark_super_dirty(fs);
1476                 printf (_("Setting current mount count to %d\n"), mount_count);
1477         }
1478         if (e_flag) {
1479                 sb->s_errors = errors;
1480                 ext2fs_mark_super_dirty(fs);
1481                 printf (_("Setting error behavior to %d\n"), errors);
1482         }
1483         if (g_flag) {
1484                 sb->s_def_resgid = resgid;
1485                 ext2fs_mark_super_dirty(fs);
1486                 printf (_("Setting reserved blocks gid to %lu\n"), resgid);
1487         }
1488         if (i_flag) {
1489                 sb->s_checkinterval = interval;
1490                 ext2fs_mark_super_dirty(fs);
1491                 printf (_("Setting interval between checks to %lu seconds\n"), interval);
1492         }
1493         if (m_flag) {
1494                 sb->s_r_blocks_count = e2p_percent(reserved_ratio,
1495                                                    sb->s_blocks_count);
1496                 ext2fs_mark_super_dirty(fs);
1497                 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
1498                         reserved_ratio, sb->s_r_blocks_count);
1499         }
1500         if (r_flag) {
1501                 if (reserved_blocks >= sb->s_blocks_count/2) {
1502                         com_err (program_name, 0,
1503                                  _("reserved blocks count is too big (%lu)"),
1504                                  reserved_blocks);
1505                         exit (1);
1506                 }
1507                 sb->s_r_blocks_count = reserved_blocks;
1508                 ext2fs_mark_super_dirty(fs);
1509                 printf (_("Setting reserved blocks count to %lu\n"),
1510                         reserved_blocks);
1511         }
1512         if (s_flag == 1) {
1513                 if (sb->s_feature_ro_compat &
1514                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1515                         fputs(_("\nThe filesystem already has sparse "
1516                                 "superblocks.\n"), stderr);
1517                 else {
1518                         sb->s_feature_ro_compat |=
1519                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1520                         sb->s_state &= ~EXT2_VALID_FS;
1521                         ext2fs_mark_super_dirty(fs);
1522                         printf(_("\nSparse superblock flag set.  %s"),
1523                                _(please_fsck));
1524                 }
1525         }
1526         if (s_flag == 0) {
1527                 fputs(_("\nClearing the sparse superflag not supported.\n"),
1528                       stderr);
1529                 exit(1);
1530         }
1531         if (T_flag) {
1532                 sb->s_lastcheck = last_check_time;
1533                 ext2fs_mark_super_dirty(fs);
1534                 printf(_("Setting time filesystem last checked to %s\n"),
1535                        ctime(&last_check_time));
1536         }
1537         if (u_flag) {
1538                 sb->s_def_resuid = resuid;
1539                 ext2fs_mark_super_dirty(fs);
1540                 printf (_("Setting reserved blocks uid to %lu\n"), resuid);
1541         }
1542         if (L_flag) {
1543                 if (strlen(new_label) > sizeof(sb->s_volume_name))
1544                         fputs(_("Warning: label too long, truncating.\n"),
1545                               stderr);
1546                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1547                 strncpy(sb->s_volume_name, new_label,
1548                         sizeof(sb->s_volume_name));
1549                 ext2fs_mark_super_dirty(fs);
1550         }
1551         if (M_flag) {
1552                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1553                 strncpy(sb->s_last_mounted, new_last_mounted,
1554                         sizeof(sb->s_last_mounted));
1555                 ext2fs_mark_super_dirty(fs);
1556         }
1557         if (mntopts_cmd)
1558                 update_mntopts(fs, mntopts_cmd);
1559         if (features_cmd)
1560                 update_feature_set(fs, features_cmd);
1561         if (extended_cmd)
1562                 parse_extended_opts(fs, extended_cmd);
1563         if (journal_size || journal_device)
1564                 add_journal(fs);
1565
1566         if (U_flag) {
1567                 if ((strcasecmp(new_UUID, "null") == 0) ||
1568                     (strcasecmp(new_UUID, "clear") == 0)) {
1569                         uuid_clear(sb->s_uuid);
1570                 } else if (strcasecmp(new_UUID, "time") == 0) {
1571                         uuid_generate_time(sb->s_uuid);
1572                 } else if (strcasecmp(new_UUID, "random") == 0) {
1573                         uuid_generate(sb->s_uuid);
1574                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1575                         com_err(program_name, 0, _("Invalid UUID format\n"));
1576                         exit(1);
1577                 }
1578                 ext2fs_mark_super_dirty(fs);
1579         }
1580         if (I_flag) {
1581                 if (mount_flags & EXT2_MF_MOUNTED) {
1582                         fputs(_("The inode size may only be "
1583                                 "changed when the filesystem is "
1584                                 "unmounted.\n"), stderr);
1585                         exit(1);
1586                 }
1587                 /*
1588                  * We want to update group descriptor also
1589                  * with the new free inode count
1590                  */
1591                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1592                 if (resize_inode(fs, new_inode_size)) {
1593                         fputs(_("Error in resizing the inode size.\n"
1594                                 "Run undoe2fs to undo the "
1595                                 "file system changes. \n"), stderr);
1596                 } else {
1597                         printf (_("Setting inode size  %d\n"),
1598                                                         new_inode_size);
1599                 }
1600         }
1601
1602         if (l_flag)
1603                 list_super (sb);
1604         if (stride_set) {
1605                 sb->s_raid_stride = stride;
1606                 ext2fs_mark_super_dirty(fs);
1607                 printf(_("Setting stride size to %d\n"), stride);
1608         }
1609         if (stripe_width_set) {
1610                 sb->s_raid_stripe_width = stripe_width;
1611                 ext2fs_mark_super_dirty(fs);
1612                 printf(_("Setting stripe width to %d\n"), stripe_width);
1613         }
1614         remove_error_table(&et_ext2_error_table);
1615         return (ext2fs_close (fs) ? 1 : 0);
1616 }